Communication method and device, access network equipment, terminal and storage medium

Abstract

The invention discloses a communication method and device, access network equipment, a terminal and a storage medium, and relates to the technical field of communication. The implementation scheme is as follows: an access network device determines the transmission direction of service data of a terminal at a target moment, and executes a message configuration process according to the transmission direction to obtain an indication message matched with the transmission direction; sending an indication message to the terminal; wherein the indication message is used for indicating the terminal to carry out DCI blind detection in the transmission direction on the PDCCH of the auxiliary carrier. Therefore, when the access network equipment judges the transmission direction of the service data of the terminal, the access network equipment indicates to the terminal that only DCI blind detection in the transmission direction is performed on the PDCCH of the auxiliary carrier instead of DCI blind detection in another direction or other directions, so that the number of times of DCI blind detection by the terminal can be reduced, and the purposes of saving power of the terminal and reducing data processing time delay are achieved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, apparatus, access network device, terminal, and storage medium. Background Art

[0002] Currently, the multi-band joint transmission technology (i.e., the CA (Carrier Aggregation) technology) can be used to improve the terminal perception and enhance the terminal's download rate and upload rate. For example, carrier aggregation transmission is performed across the 3.5 GHz (gigahertz) 100 MHz (megahertz) (i.e., on the 3.5 GHz wireless frequency band, the transmission bandwidth of the signal is 100 MHz) and 2.1 GHz 40 MHz (i.e., on the 2.1 GHz wireless frequency band, the transmission bandwidth of the signal is 40 MHz). At this time, the terminal performs joint reception and transmission of data in cells of carriers in two different frequency bands, so the terminal rate is greatly improved.

[0003] In the related art, the activation of CA does not distinguish between the uplink and the downlink. Especially when the secondary carrier is in the FDD (Frequency Division Duplex) mode, since the terminal listens to the channel for data reception and transmission in two cells, but the terminal does not upload and download simultaneously, and only performs one-way services in most cases. If the uplink CA and the downlink CA are both activated at this time, when the terminal blindly detects the PDCCH (Physical Downlink Control Channel) on the secondary carrier, when detecting the DCI (Downlink Control Information) in the corresponding service direction (subsequently referred to as the transmission direction), it still needs to continue to blindly detect whether there is DCI in the other direction.

[0004] However, blind detection and decoding of DCI require high power consumption and computing power of the terminal. 100 times of blind detection is equivalent to the computing burden of demodulating 4M (mega) of PDSCH (Physical Downlink Shared Channel) data. Therefore, in the case where both the uplink CA and the downlink CA are activated, the invalid blind detection results in a large processing delay for the terminal to decode the DCI and a large waste of power consumption. Summary of the Invention

[0005] This application provides a communication method, apparatus, access network device, terminal, and storage medium.

[0006] According to one aspect of the present application, a communication method is provided, which is applied to an access network device. The method includes: determining the transmission direction of the service data of the terminal at a target moment; performing a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction; sending the indication message to the terminal; wherein, the indication message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0007] As a possible implementation manner, the indication message is the first radio resource control reconfiguration rrcReconfiguration message of the control plane. Performing a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction includes: querying whether the access network device has added a secondary carrier for the terminal to obtain a query result; performing a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message.

[0008] As a possible implementation manner, in the case where the query result indicates that no secondary carrier has been added for the terminal, performing a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: adding a downlink secondary carrier for the terminal when the transmission direction is downlink; performing a message configuration process according to the downlink secondary carrier to obtain the first rrcReconfiguration message associated with the downlink secondary carrier; wherein, only the first downlink BWP information is included in the first rrcReconfiguration message; wherein, the first downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDCCH-Config information and PDSCH-Config information. The PDCCH-Config information is used to represent the information used for DCI blind detection; the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0009] As a possible implementation, when the query result indicates that no secondary carrier has been added to the terminal, according to the query result and the transmission direction, perform a message configuration process to obtain a first rrcReconfiguration message, including: when the transmission direction is uplink, add an uplink secondary carrier to the terminal; perform a message configuration process according to the uplink secondary carrier to obtain a first rrcReconfiguration message associated with the uplink secondary carrier; wherein, the first rrcReconfiguration message includes first uplink BWP information and second downlink BWP information; wherein, the first uplink BWP information includes physical resource information used by the uplink secondary carrier; wherein, the second downlink BWP information contains PDCCH-Config information but does not contain PDSCH-Config information, and the PDCCH-Config information is used to represent the information used for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0010] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, according to the query result and the transmission direction, perform a message configuration process to obtain a first rrcReconfiguration message, including: when the transmission direction switches from downlink to uplink, according to the uplink secondary carrier already added to the terminal, perform a message configuration process to obtain a first rrcReconfiguration message; wherein, the content of the first rrcReconfiguration message is obtained by adding second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message; wherein, the second rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target moment; wherein, the third downlink BWP information includes physical resource information used by the downlink secondary carrier already added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data; the second uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0011] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, a message configuration process is performed according to the query result and the transmission direction to obtain a first rrcReconfiguration message, including: when the transmission direction is switched from downlink to uplink and downlink, a message configuration process is performed according to the uplink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding third uplink BWP information to the third rrcReconfiguration message; wherein, the third rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target moment; the third rrcReconfiguration message includes fourth downlink BWP information; wherein, the fourth downlink BWP information includes physical resource information used by the downlink secondary carrier added to the terminal, and the uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0012] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, a message configuration process is performed according to the query result and the transmission direction to obtain a first rrcReconfiguration message, including: when the transmission direction is switched from uplink to downlink, a message configuration process is performed according to the downlink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message; wherein, the fourth rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target moment; wherein, the fourth uplink BWP information includes physical resource information used by the uplink secondary carrier added to the terminal, the fifth downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by the downlink service data.

[0013] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, perform a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, including: when the transmission direction changes from uplink to uplink and downlink, perform a message configuration process according to the added downlink secondary carrier of the terminal to obtain the first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding the sixth downlink BWP information to the fifth rrcReconfiguration message; wherein, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the fifth rrcReconfiguration message includes the fifth uplink BWP information; wherein, the fifth uplink BWP information includes the physical resource information used by the added uplink secondary carrier of the terminal, the sixth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by the downlink service data.

[0014] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, perform a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, including: when the transmission direction changes from uplink and downlink to downlink, perform a message configuration process according to the added uplink secondary carrier of the terminal to obtain the first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information from the sixth rrcReconfiguration message; wherein, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the sixth rrcReconfiguration message further includes the seventh downlink BWP information; wherein, the sixth uplink BWP information includes the physical resource information used by the uplink secondary carrier, the seventh downlink BWP information includes the physical resource information used by the added downlink secondary carrier of the terminal, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by the downlink service data.

[0015] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, configure a first rrcReconfiguration message according to the query result and the transmission direction, including: when the transmission direction switches from uplink / downlink to uplink, perform a message configuration process according to the added downlink secondary carrier of the terminal to obtain the first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message; wherein, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the seventh rrcReconfiguration message further includes the seventh uplink BWP information; wherein, the seventh uplink BWP information includes the physical resource information used by the added uplink secondary carrier of the terminal, the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the PDSCH-Config information is used to characterize the physical resource information used by the downlink service data.

[0016] As a possible implementation, the indication message is a MAC-CE message on the user plane. Perform a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction, including: when the transmission direction switches from downlink to uplink, or when the transmission direction switches from uplink / downlink to uplink, perform a message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the added downlink secondary carrier of the terminal, and the second byte is used to activate or deactivate the added uplink secondary carrier of the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; wherein, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0017] As a possible implementation, it is indicated that the message is a MAC-CE message on the service plane. The message configuration process is performed according to the transmission direction to obtain an indication message matching the transmission direction, including: in the case where the transmission direction is switched from downlink to uplink and downlink, or the transmission direction is switched from uplink to uplink and downlink, the message configuration process is performed to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; according to the configured first byte and the configured second byte, a MAC-CE message is generated; wherein, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the activation of the uplink secondary carrier.

[0018] As a possible implementation, it is indicated that the message is a MAC-CE message on the service plane. The message configuration process is performed according to the transmission direction to obtain an indication message matching the transmission direction, including: in the case where the transmission direction is switched from uplink to downlink, or the transmission direction is switched from uplink and downlink to downlink, the message configuration process is performed to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; according to the configured first byte and the configured second byte, a MAC-CE message is generated; wherein, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

[0019] As a possible implementation, the reserved bit in the configured first byte in the MAC-CE message is used to characterize whether there is a configured second byte in the MAC-CE message.

[0020] As a possible implementation, determining the transmission direction of the service data of the terminal at the target moment includes: obtaining a first data volume of the uplink service data received by the terminal and a second data volume of the downlink service data sent by the terminal in a plurality of time periods before the target moment; determining the transmission direction of the terminal in each time period according to the first data volume and the second data volume in each time period; determining the transmission direction of the terminal at the target moment according to the transmission directions of the terminal in the plurality of time periods.

[0021] According to another aspect of the present application, another communication method is provided, which is applied to a terminal. The method includes: receiving an indication message sent by an access network device, wherein the indication message is obtained by determining the transmission direction of the service data of the terminal at the target moment and performing a message configuration process according to the transmission direction; performing a DCI blind detection of the transmission direction on the PDCCH of the secondary carrier according to the indication message.

[0022] According to another aspect of the present application, an access network device is provided, including a memory, a transceiver, and a processor;

[0023] The memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: determining the transmission direction of the service data of the terminal at the target moment; performing a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction; sending the indication message to the terminal; wherein, the indication message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0024] As a possible implementation manner, the indication message is the first radio resource control reconfiguration rrcReconfiguration message of the control plane. When the processor performs the message configuration process according to the transmission direction to obtain an indication message matching the transmission direction, specifically: querying whether the access network device has added a secondary carrier for the terminal to obtain a query result; performing a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message.

[0025] As a possible implementation manner, when the query result indicates that no secondary carrier has been added for the terminal, the processor performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, specifically: when the transmission direction is downlink, adding a downlink secondary carrier for the terminal; performing a message configuration process according to the downlink secondary carrier to obtain the first rrcReconfiguration message associated with the downlink secondary carrier; wherein, only the first downlink bandwidth part BWP information is included in the first rrcReconfiguration message; wherein, the first downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDCCH configuration PDCCH-Config information and physical downlink shared channel configuration PDSCH-Config information. The PDCCH-Config information is used to characterize the information used for DCI blind detection; the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

[0026] As a possible implementation manner, when the query result indicates that no secondary carrier has been added to the terminal, the processor executes a message configuration process according to the query result and the transmission direction to obtain a first rrcReconfiguration message. Specifically, when the transmission direction is uplink, an uplink secondary carrier is added to the terminal; the message configuration process is executed according to the uplink secondary carrier to obtain the first rrcReconfiguration message associated with the uplink secondary carrier; wherein, the first rrcReconfiguration message includes first uplink BWP information and second downlink BWP information; wherein, the first uplink BWP information includes physical resource information used by the uplink secondary carrier; wherein, the second downlink BWP information includes PDCCH-Config information but does not include PDSCH-Config information, and the PDCCH-Config information is used to represent the information used for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0027] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the processor executes a message configuration process according to the query result and the transmission direction to obtain a first rrcReconfiguration message. Specifically, when the transmission direction is switched from downlink to uplink, the message configuration process is executed according to the uplink secondary carrier already added to the terminal to obtain the first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message; wherein, the second rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target moment; wherein, the third downlink BWP information includes physical resource information used by the downlink secondary carrier already added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data; the second uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0028] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction changes from downlink to uplink and downlink, the message configuration process is performed according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by adding the third uplink BWP information to the third rrcReconfiguration message. Among them, the third rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The third rrcReconfiguration message includes the fourth downlink BWP information. Among them, the fourth downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the uplink BWP information includes the physical resource information used by the uplink secondary carrier.

[0029] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction changes from uplink to downlink, the message configuration process is performed according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by adding the fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message. Among them, the fourth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. Among them, the fourth uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the fifth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0030] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically: when the transmission direction changes from uplink to uplink and downlink, a message configuration process is performed according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by adding the sixth downlink BWP information to the fifth rrcReconfiguration message. Among them, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The fifth rrcReconfiguration message includes the fifth uplink BWP information. Among them, the fifth uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, and the sixth downlink BWP information includes the physical resource information used by the downlink secondary carrier. The physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

[0031] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically: when the transmission direction changes from uplink and downlink to downlink, a message configuration process is performed according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information from the sixth rrcReconfiguration message. Among them, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The sixth rrcReconfiguration message further includes the seventh downlink BWP information. Among them, the sixth uplink BWP information includes the physical resource information used by the uplink secondary carrier, and the seventh downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal. The physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

[0032] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor configures the first rrcReconfiguration message according to the query result and the transmission direction. Specifically, when the transmission direction switches from uplink-downlink to uplink, the message configuration process is performed according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message. Among them, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The seventh rrcReconfiguration message also includes the seventh uplink BWP information. Among them, the seventh uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the PDSCH-Config information is used to represent the physical resource information used by the downlink service data.

[0033] As a possible implementation, the indication message is a media access control control element MAC-CE message on the user plane. The processor performs a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction. Specifically, when the transmission direction switches from downlink to uplink, or when the transmission direction switches from uplink-downlink to uplink, the message configuration process is performed to configure the first byte and the second byte. Among them, the first byte is used to activate or deactivate the downlink secondary carrier added to the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added to the terminal. According to the configured first byte and the configured second byte, a MAC-CE message is generated. Among them, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0034] As a possible implementation manner, it is indicated that the message is a MAC-CE message on the service plane. The processor executes a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction. Specifically, in the case where the transmission direction is switched from downlink to uplink and downlink, or the transmission direction is switched from uplink to uplink and downlink, the message configuration process is executed to configure the first byte and the second byte. Wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal. According to the configured first byte and the configured second byte, a MAC-CE message is generated. Wherein, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the activation of the uplink secondary carrier.

[0035] As a possible implementation manner, it is indicated that the message is a MAC-CE message on the service plane. The processor executes a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction. Specifically, in the case where the transmission direction is switched from uplink to downlink, or the transmission direction is switched from uplink and downlink to downlink, the message configuration process is executed to configure the first byte and the second byte. Wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal. According to the configured first byte and the configured second byte, a MAC-CE message is generated. Wherein, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

[0036] As a possible implementation manner, the reserved bit in the configured first byte in the MAC-CE message is used to characterize whether there is a configured second byte in the MAC-CE message.

[0037] As a possible implementation manner, the processor executes to determine the transmission direction of the service data of the terminal at the target moment. Specifically, the first data volume of the uplink service data received by the terminal and the second data volume of the downlink service data sent by the terminal within a plurality of time periods before the target moment are obtained. According to the first data volume and the second data volume in each time period, the transmission direction of the terminal in each time period is determined. According to the transmission direction of the terminal in a plurality of time periods, the transmission direction of the terminal at the target moment is determined.

[0038] According to another aspect of the present application, a terminal is provided, including a memory, a transceiver, and a processor;

[0039] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of a processor; a processor for reading the computer program in the memory and performing the following operations: receiving an indication message sent by an access network device, where the indication message is obtained by determining the transmission direction of the service data of a terminal at a target time and performing a message configuration process according to the transmission direction; performing a DCI blind detection of the transmission direction on the PDCCH of a secondary carrier according to the indication message.

[0040] According to another aspect of the present application, there is provided a communication device applied to an access network device. The device includes:

[0041] A determination unit for determining the transmission direction of the service data of a terminal at a target time;

[0042] An execution unit for performing a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction;

[0043] A sending unit for sending the indication message to the terminal; where the indication message is used to instruct the terminal to perform a DCI blind detection of the transmission direction on the PDCCH of a secondary carrier.

[0044] As a possible implementation, the indication message is a first radio resource control reconfiguration rrcReconfiguration message of the control plane. The execution unit is specifically configured to: query whether the access network device has added a secondary carrier for the terminal to obtain a query result; perform a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message.

[0045] As a possible implementation, in the case where the query result indicates that no secondary carrier has been added for the terminal, the execution unit is specifically configured to: add a downlink secondary carrier for the terminal when the transmission direction is downlink; perform a message configuration process according to the downlink secondary carrier to obtain a first rrcReconfiguration message associated with the downlink secondary carrier; where only the first downlink BWP information is included in the first rrcReconfiguration message; where the first downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDCCH-Config information and PDSCH-Config information. The PDCCH-Config information is used to characterize the information used for DCI blind detection; the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

[0046] As a possible implementation manner, when the query result indicates that no secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction is uplink, add an uplink secondary carrier to the terminal; perform a message configuration process according to the uplink secondary carrier to obtain a first rrcReconfiguration message associated with the uplink secondary carrier; wherein, the first rrcReconfiguration message includes first uplink BWP information and second downlink BWP information; wherein, the first uplink BWP information includes physical resource information used by the uplink secondary carrier; wherein, the second downlink BWP information includes PDCCH-Config information but does not include PDSCH-Config information, and the PDCCH-Config information is used to represent the information used for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0047] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction is switched from downlink to uplink, perform a message configuration process according to the uplink secondary carrier already added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message; wherein, the second rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target moment; wherein, the third downlink BWP information includes physical resource information used by the downlink secondary carrier already added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data; the second uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0048] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction is switched from downlink to uplink and downlink, perform a message configuration process according to the uplink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding third uplink BWP information to a third rrcReconfiguration message; wherein, the third rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; the third rrcReconfiguration message includes fourth downlink BWP information; wherein, the fourth downlink BWP information includes physical resource information used by the downlink secondary carrier added to the terminal, and the uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0049] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction is switched from uplink to downlink, perform a message configuration process according to the downlink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding fifth downlink BWP information to a fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message; wherein, the fourth rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; wherein, the fourth uplink BWP information includes physical resource information used by the uplink secondary carrier added to the terminal, the fifth downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent physical resource information used by downlink service data.

[0050] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction switches from uplink to uplink and downlink, perform a message configuration process according to the downlink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding sixth downlink BWP information to the fifth rrcReconfiguration message; wherein, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the fifth rrcReconfiguration message includes fifth uplink BWP information; wherein, the fifth uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the sixth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by downlink service data.

[0051] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction switches from uplink and downlink to downlink, perform a message configuration process according to the uplink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information from the sixth rrcReconfiguration message; wherein, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the sixth rrcReconfiguration message further includes seventh downlink BWP information; wherein, the sixth uplink BWP information includes the physical resource information used by the uplink secondary carrier, and the seventh downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by downlink service data.

[0052] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit is specifically configured to: when the transmission direction switches from uplink and downlink to uplink, perform a message configuration process according to the downlink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message; wherein, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the seventh rrcReconfiguration message further includes the seventh uplink BWP information; wherein, the seventh uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

[0053] As a possible implementation, the indication message is a MAC-CE message on the user plane. The execution unit is specifically configured to: when the transmission direction switches from downlink to uplink, or when the transmission direction switches from uplink and downlink to uplink, perform a message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added to the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added to the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; wherein, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0054] As a possible implementation, the indication message is a MAC-CE message on the user plane. The execution unit is specifically configured to: when the transmission direction switches from downlink to uplink and downlink, or when the transmission direction switches from uplink to uplink and downlink, perform a message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added to the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added to the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; wherein, the configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0055] As a possible implementation manner, the indication message is a MAC-CE message on the service plane, and the execution unit is specifically configured to: when the transmission direction is switched from uplink to downlink, or when the transmission direction is switched from uplink and downlink to downlink, perform a message configuration process to configure the first byte and the second byte; where the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; where the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

[0056] As a possible implementation manner, the reserved bit in the configured first byte in the MAC-CE message is used to characterize whether there is a configured second byte in the MAC-CE message.

[0057] As a possible implementation manner, the determination unit is specifically configured to: obtain a first data volume of uplink service data received by the terminal and a second data volume of downlink service data sent by the terminal in multiple time periods before the target time; determine the transmission direction of the terminal in each time period according to the first data volume and the second data volume in each time period; determine the transmission direction of the terminal at the target time according to the transmission directions of the terminal in multiple time periods.

[0058] According to another aspect of the present application, a communication device is provided, which is applied to a terminal, and the device includes:

[0059] A receiving unit, configured to receive an indication message sent by an access network device, where the indication message is obtained by determining the transmission direction of the terminal's service data at the target time and performing a message configuration process according to the transmission direction;

[0060] A blind detection unit, configured to perform blind detection of DCI for the transmission direction on the PDCCH of the secondary carrier according to the indication message.

[0061] According to another aspect of the present application, a processor-readable storage medium is provided, and the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute any one of the foregoing communication methods.

[0062] According to another aspect of the present application, a computer program product is provided, and when the instructions in the computer program product are executed by a processor, any one of the foregoing communication methods is executed.

[0063] The present application has the following technical effects: The access network device determines the transmission direction of the terminal's service data at the target moment, and executes a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction; and sends the indication message to the terminal. Among them, the indication message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier. Thus, when the access network device determines the transmission direction of the terminal's service data, it instructs the terminal to perform only DCI blind detection in this transmission direction on the PDCCH of the secondary carrier, rather than performing DCI blind detection in the other direction or other directions, which can reduce the number of times of DCI blind detection by the terminal and achieve the purpose of power saving and reducing data processing delay of the terminal.

[0064] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. Brief Description of the Drawings

[0065] The drawings are used to better understand the solution and do not constitute a limitation to the present application. Among them:

[0066] Figure 1 is a schematic diagram of an existing MAC-CE message;

[0067] Figure 2 is a schematic flowchart of a communication method provided by an embodiment of the present application;

[0068] Figure 3 is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0069] Figure 4 is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0070] Figure 5 is a schematic diagram of the MAC-CE message provided by an embodiment of the present application;

[0071] Figure 6 is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0072] Figure 7 is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0073] Figure 8 is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0074] Figure 9 is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0075] Figure 10It is a schematic structural diagram of an access network device provided by an embodiment of the present application;

[0076] Figure 11 It is a schematic structural diagram of a terminal provided by an embodiment of the present application;

[0077] Figure 12 It is a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0078] Figure 13 It is a schematic structural diagram of another communication device provided by an embodiment of the present application. Specific embodiments

[0079] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0080] That is, in the embodiments of the present application, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0081] Currently, the terminal supports uplink and downlink carrier aggregation with a 5G cell (band NR (New Radio) cell) in a certain frequency band. The access network device adds a secondary carrier to the terminal through the RRC reconfiguration message (rrcReconfiguration message) at the RRC (Radio Resource Control) protocol layer. Among them, the carrier information in the rrcReconfiguration message includes the secondary carrier cell index, the BWP (BandWidth Part) information of the uplink secondary carrier (referred to as uplink BWP information for short), and the BWP information of the downlink secondary carrier (referred to as downlink BWP information for short). Among them, the uplink BWP information includes the physical resources used by the uplink secondary carrier added for the terminal, and the downlink BWP information includes the physical resources used by the downlink secondary carrier added for the terminal.

[0082] Among them, the PDCCH configuration information (PDCCH-Config information) in the downlink BWP information is used to configure DCI blind detection related information, and the PDSCH configuration information (PDSCH-Config information) in the downlink BWP information configures related information such as the physical resources used for downlink service data.

[0083] As the traffic volume of the terminal continuously increases, the access network device can send MAC-CE (Media Access Control-Control Element) messages at the MAC (Media Access Control) protocol layer to notify the terminal to activate or deactivate a secondary carrier. If the secondary carrier is activated, the terminal starts to monitor the PDCCH on the secondary carrier, and thus performs download or upload services on the secondary carrier.

[0084] As an example, the MAC-CE message may include Figure 1 1 byte as shown. The C in this 1 byte i represents the index number SCellIndex of the cell where the secondary carrier is located (referred to as the secondary cell for short). When the value of C i is 1, it indicates the activation of CA for the corresponding secondary cell. When the value of C i is 0, it indicates the deactivation of CA for the corresponding secondary cell. R is a reserved bit.

[0085] In the related art, when activating a secondary carrier, if the uplink resources of a secondary carrier participate in uplink carrier aggregation, its downlink resources must participate in downlink carrier aggregation. Therefore, the prior art cannot distinguish whether it is the activation of uplink CA or downlink CA. Therefore, after the secondary carrier added by the access network device for the terminal is activated, especially when the secondary carrier is in the FDD mode, the terminal performs DCI blind detection on the uplink and downlink secondary carriers to determine whether the access network device has uplink scheduling and downlink scheduling. However, when the terminal is performing download or upload services at this time, the terminal has a large amount of service data transmission only in one transmission direction, and the access network device schedules service data transmission only in one transmission direction on the secondary carrier, and there is only DCI in a single transmission direction in the PDCCH, but the terminal does not know. After blindly detecting DCI in one transmission direction, it still blindly detects DCI in the other direction in the search space. These invalid blind detections cause unnecessary power consumption and processing delay.

[0086] To address at least one of the above problems, the present application provides a communication method, apparatus, access network device, terminal, and storage medium.

[0087] The following describes the communication method, apparatus, access network device, and storage medium of this embodiment with reference to the accompanying drawings. Before specifically describing the embodiments of the present application, for the sake of understanding, the commonly used technical terms are first introduced:

[0088] The first byte is used to activate or deactivate the downlink secondary carrier added for the terminal.

[0089] The second byte is used to activate or deactivate the uplink secondary carrier added for the terminal.

[0090] The MAC-CE message refers to the MAC-CE message configured for the terminal at the target moment. The reserved bit in the first configured byte of the MAC-CE message is used to indicate whether there is a second configured byte in the MAC-CE message.

[0091] For example, when the value of the reserved bit in the first configured byte of the MAC-CE message is the first set value (such as 1), it is used to indicate that there is a second configured byte in the MAC-CE message. When the value of the reserved bit in the first configured byte of the MAC-CE message is the second set value (such as 0), it is used to indicate that there is no second configured byte in the MAC-CE message.

[0092] The uplink configuration threshold refers to the pre-configured uplink data volume threshold or value.

[0093] The downlink configuration threshold refers to the pre-configured downlink data volume threshold or value.

[0094] Among them, there is no limitation on the size relationship between the uplink configuration threshold and the downlink configuration threshold. For example, the uplink configuration threshold can be greater than the downlink configuration threshold, or the uplink configuration threshold can be equal to the downlink configuration threshold, or the uplink configuration threshold can be less than the downlink configuration threshold.

[0095] Figure 2 It is a schematic flow diagram of a communication method provided by an embodiment of the present application.

[0096] The communication method of the embodiment of the present application can be applied to an access network device.

[0097] Among them, the access network device is exemplified by a base station. The base station may include multiple cells that provide services to terminals. Depending on the specific application scenario, the base station may also be referred to as an access point, or may be a device in the access network that communicates with wireless terminals through one or more sectors over the air interface, or other names. The access network device can be used to mutually replace the received air frames and Internet Protocol (IP) packets, and act as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The access network device can also coordinate the attribute management of the air interface. For example, the access network device involved in the embodiments of this application can be an access network device (Base Transceiver Station, BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or can be an access network device (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), or can also be an evolved access network device (evolutional Node B, eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), or can also be a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc. The embodiments of this application do not limit this. In some network structures, the access network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, and the centralized unit and the distributed unit may also be arranged separately geographically.

[0098] Among them, the terminal can be a device that provides voice and / or data connectivity to the user, such as a handheld device with wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal can be called a User Equipment (UE for short). Among them, the wireless terminal can communicate with one or more Core Networks (CN for short) via a Radio Access Network (RAN for short). The wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, computer-integrated or vehicle-mounted mobile device, which exchanges language and / or data with the wireless access network. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDA) etc. The wireless terminal can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, which is not limited in the embodiments of this application.

[0099] As Figure 2 shown, the communication method may include the following steps:

[0100] Step S201, determine the transmission direction of the service data of the terminal at the target moment.

[0101] Among them, the target moment can be any moment. For example, the target moment can be the current moment.

[0102] Among them, the transmission direction includes but is not limited to: uplink (or called upload), downlink (or called download), uplink and downlink (or called upload + download), uplink switching to downlink, uplink switching to uplink and downlink, downlink switching to uplink, downlink switching to uplink and downlink, uplink and downlink switching to uplink, uplink and downlink switching to downlink.

[0103] In an embodiment of the present application, the access network device may determine the transmission direction of the service data of the terminal at the target time.

[0104] As an example, the access network device may determine the transmission direction of the service data of the terminal at the target time according to the downlink rate and / or uplink rate of the terminal. For example, when the downlink rate is relatively high, it may be determined that the transmission direction of the service data of the terminal at the target time includes downlink, and when the uplink rate is relatively high, it may be determined that the transmission direction of the service data of the terminal at the target time includes uplink.

[0105] Step S202: Perform a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction.

[0106] In an embodiment of the present application, the access network device may perform a message configuration process according to the transmission direction of the terminal to obtain an indication message that matches the transmission direction of the terminal, where the indication message is used to indicate that the terminal performs DCI blind detection in the transmission direction on the PDCCH of the secondary carrier.

[0107] Step S203: Send the indication message to the terminal; where the indication message is used to indicate that the terminal performs DCI blind detection in the transmission direction on the PDCCH of the secondary carrier.

[0108] Wherein, DCI is used for uplink scheduling and / or downlink scheduling.

[0109] In an embodiment of the present application, the access network device may send the indication message to the terminal. Correspondingly, after receiving the indication message, the terminal may perform DCI blind detection only in the above-mentioned transmission direction on the PDCCH of the secondary carrier.

[0110] In the communication method of the embodiment of the present application, the access network device determines the transmission direction of the service data of the terminal at the target time, and performs a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction; sends the indication message to the terminal; where the indication message is used to indicate that the terminal performs DCI blind detection in the transmission direction on the PDCCH of the secondary carrier. Thus, when the access network device determines the transmission direction of the service data of the terminal, it indicates to the terminal to perform DCI blind detection only in the transmission direction on the PDCCH of the secondary carrier, rather than performing DCI blind detection in the other direction or other directions, which can reduce the number of DCI blind detections of the terminal and achieve the purpose of power saving of the terminal and reducing data processing delay.

[0111] In any embodiment of the present application, the indication message may be the first rrcReconfiguration message on the control plane. To clearly illustrate how to configure the first rrcReconfiguration message that matches the transmission direction in the above embodiments of the present application, the present application also proposes a communication method.

[0112] Figure 3 It is a schematic flowchart of another communication method provided by the embodiments of the present application.

[0113] Such as Figure 3 shown, this communication method can be applied to an access network device and includes the following steps:

[0114] Step S301, determine the transmission direction of the terminal's service data at the target moment.

[0115] For the explanation of step S301, reference can be made to the relevant description in any embodiment of the present application, and details will not be elaborated here.

[0116] Step S302, query whether the access network device has added a secondary carrier for the terminal, and obtain a query result.

[0117] In the embodiments of the present application, the access network device can query whether a secondary carrier has been added for the terminal, and obtain a query result, where the query result is used to indicate that a secondary carrier has been added for the terminal, or indicate that no secondary carrier has been added for the terminal.

[0118] Step S303, according to the query result and the transmission direction, perform a message configuration process to obtain the first rrcReconfiguration message.

[0119] The first rrcReconfiguration message refers to the rrcReconfiguration message configured by the access network device for the terminal at the target moment.

[0120] In the embodiments of the present application, the access network device can perform a message configuration process according to the query result and the transmission direction of the terminal's service data to obtain the first rrcReconfiguration message.

[0121] In any embodiment of the present application, the method for obtaining the first rrcReconfiguration message may be, for example: when the query result indicates that no secondary carrier has been added to the terminal and the transmission direction is downlink (or download), the access network device may add a downlink secondary carrier to the terminal, and perform a message configuration process according to the downlink secondary carrier to obtain a first rrcReconfiguration message associated with the downlink secondary carrier; wherein, the first rrcReconfiguration message only includes information related to the first downlink BWP.

[0122] Wherein, the first downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the first downlink BWP information or the physical resource information used by the downlink secondary carrier may simultaneously include PDCCH-Config information and PDSCH-Config information, wherein the PDCCH-Config information is used to represent the information used or required for DCI blind detection (or DCI blind detection related information); the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0123] In any embodiment of the present application, the method for obtaining the first rrcReconfiguration message may be, for example: when the query result indicates that no secondary carrier has been added to the terminal and the transmission direction is uplink (or upload), the access network device may add an uplink secondary carrier to the terminal, and perform a message configuration process according to the uplink secondary carrier to obtain a first rrcReconfiguration message associated with the uplink secondary carrier; wherein, the first rrcReconfiguration message includes information related to the first uplink BWP and the second downlink BWP.

[0124] Wherein, the first uplink BWP information includes the physical resource information used by the uplink secondary carrier.

[0125] Wherein, the second downlink BWP information contains PDCCH-Config information but does not contain PDSCH-Config information. The PDCCH-Config information is used to represent the information used or required for DCI blind detection (or DCI blind detection related information), and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0126] In any embodiment of the present application, the method for obtaining the first rrcReconfiguration message may be, for example: when the query result indicates that a secondary carrier has been added for the terminal and the transmission direction is switched from downlink to uplink, the access network device may perform a message configuration process based on the uplink secondary carrier added for the terminal to obtain the first rrcReconfiguration message.

[0127] Wherein, the message content in the first rrcReconfiguration message is obtained by adding the second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message.

[0128] Wherein, the second rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. For example, the second rrcReconfiguration message may be the rrcReconfiguration message configured for the terminal by the access network device at a certain time before the target time (when the transmission direction of the service data of the terminal at this time is downlink).

[0129] Wherein, the third downlink BWP information in the second rrcReconfiguration message may include the physical resource information used by the downlink secondary carrier added for the terminal.

[0130] Wherein, the PDSCH-Config information in the third downlink BWP information is used to characterize the physical resource information used by the downlink service data.

[0131] Wherein, the second uplink BWP information may include the physical resource information used by the uplink secondary carrier added for the terminal.

[0132] In any embodiment of the present application, the method for obtaining the first rrcReconfiguration message may be, for example: when the query result indicates that a secondary carrier has been added for the terminal and the transmission direction is switched from downlink to uplink and downlink, the access network device may perform a message configuration process based on the uplink secondary carrier added for the terminal to obtain the first rrcReconfiguration message.

[0133] Wherein, the message content in the first rrcReconfiguration message is obtained by adding the third uplink BWP information to the third rrcReconfiguration message.

[0134] Among them, the third rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. For example, the third rrcReconfiguration message can be the rrcReconfiguration message configured for the terminal by the access network device at a certain time before the target time (the transmission direction of the service data of the terminal at this time is downlink).

[0135] Among them, the third rrcReconfiguration message includes fourth downlink BWP information, and the fourth downlink BWP information may include physical resource information used for the added downlink secondary carrier.

[0136] Among them, the fourth downlink BWP information or the physical resource information used for the downlink secondary carrier may simultaneously include PDCCH-Config information and PDSCH-Config information. Among them, the PDCCH-Config information is used to represent the information used or required for DCI blind detection (or referred to as DCI blind detection related information), and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0137] Among them, the third uplink BWP information may include physical resource information used for the uplink secondary carrier added for the terminal.

[0138] In any embodiment of the present application, the acquisition method of the first rrcReconfiguration message can be, for example: when the query result indicates that a secondary carrier has been added for the terminal and the transmission direction is switched from uplink to downlink, the access network device can perform a message configuration process according to the downlink secondary carrier added for the terminal to obtain the first rrcReconfiguration message.

[0139] Among them, the message content in the first rrcReconfiguration message is obtained by adding fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message.

[0140] Among them, the fourth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. For example, the fourth rrcReconfiguration message can be the rrcReconfiguration message configured for the terminal by the access network device at a certain time before the target time (the transmission direction of the service data of the terminal at this time is uplink).

[0141] Among them, the fourth rrcReconfiguration message may include fourth uplink BWP information, and the fourth uplink BWP information may include physical resource information used for the uplink secondary carrier added for the terminal.

[0142] Among them, the fifth downlink BWP information may include physical resource information used for the downlink secondary carrier added for the terminal, and the fifth downlink BWP information or the physical resource information used for the downlink secondary carrier may include PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

[0143] In any embodiment of the present application, the acquisition method of the first rrcReconfiguration message may be, for example: when the query result indicates that a secondary carrier has been added for the terminal and the transmission direction is switched from uplink to uplink and downlink, the access network device may perform a message configuration process according to the downlink secondary carrier added for the terminal to obtain the first rrcReconfiguration message.

[0144] Among them, the message content in the first rrcReconfiguration message is obtained by adding sixth downlink BWP information to the fifth rrcReconfiguration message.

[0145] Among them, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment. For example, the fifth rrcReconfiguration message may be the rrcReconfiguration message configured by the access network device for the terminal at a certain moment before the target moment (the transmission direction of the service data of the terminal at this moment is uplink).

[0146] Among them, the fifth rrcReconfiguration message includes fifth uplink BWP information, and among them, the fifth uplink BWP information may include physical resource information used for the uplink secondary carrier added for the terminal.

[0147] Among them, the sixth downlink BWP information includes physical resource information used for the downlink secondary carrier added for the terminal, and the sixth downlink BWP information or the physical resource information used for the downlink secondary carrier may include PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

[0148] In any embodiment of the present application, the acquisition method of the first rrcReconfiguration message may be, for example: when the query result indicates that a secondary carrier has been added to the terminal and the transmission direction is switched from uplink and downlink to downlink, the access network device may perform a message configuration process based on the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message.

[0149] Among them, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information in the sixth rrcReconfiguration message.

[0150] Among them, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment. For example, the sixth rrcReconfiguration message may be the rrcReconfiguration message configured by the access network device for the terminal at a certain moment before the target moment (the transmission direction of the service data of the terminal at this moment is uplink and downlink).

[0151] Among them, the sixth rrcReconfiguration message may include sixth uplink BWP information and seventh downlink BWP information.

[0152] Among them, the sixth uplink BWP information may include the physical resource information used by the uplink secondary carrier added to the terminal, and the seventh downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal.

[0153] Among them, the seventh downlink BWP information or the physical resource information used by the downlink secondary carrier may include PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by the downlink service data.

[0154] In any embodiment of the present application, the acquisition method of the first rrcReconfiguration message may be, for example: when the query result indicates that a secondary carrier has been added to the terminal and the transmission direction is switched from uplink and downlink to uplink, the access network device may perform a message configuration process based on the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message.

[0155] Among them, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message.

[0156] Among them, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. For example, the seventh rrcReconfiguration message can be the rrcReconfiguration message configured for the terminal by the access network device at a certain time before the target time (the transmission direction of the service data of the terminal at this time is uplink and downlink).

[0157] Among them, the seventh rrcReconfiguration message may include the seventh uplink BWP information and the eighth downlink BWP information.

[0158] Among them, the seventh uplink BWP information may include the physical resource information used by the uplink secondary carrier already added for the terminal, and the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier already added for the terminal.

[0159] Among them, the eighth downlink BWP information may simultaneously include PDCCH-Config information and PDSCH-Config information. Among them, the PDCCH-Config information is used to represent the information used or required for DCI blind detection (or referred to as DCI blind detection related information), and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0160] In summary, after the access network device determines the transmission direction of the terminal's service data, when adding a secondary carrier for the terminal, only the BWP information corresponding to the transmission direction is added. Or, when initially adding a secondary carrier, it includes uplink BWP information and downlink BWP information, but when the transmission direction changes, the BWP information in the corresponding direction can be added or deleted. Thus, according to whether the BWP information in the corresponding direction is configured in the rrcReconfiguration message, when the terminal performs DCI monitoring or blind detection on the PDCCH of the secondary carrier, it only monitors the DCI configured by the BWP information in the rrcReconfiguration message and does not perform blind detection of the DCI in the other direction, thereby minimizing the number of DCI blind detections to the greatest extent.

[0161] Step S304, send the first rrcReconfiguration message to the terminal; among them, the first rrcReconfiguration message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0162] Among them, DCI is used for uplink scheduling and / or downlink scheduling.

[0163] In an embodiment of the present application, the access network device may send a first rrcReconfiguration message to the terminal. Correspondingly, after receiving the first rrcReconfiguration message, the terminal may perform DCI blind detection in the above transmission direction only on the PDCCH of the secondary carrier.

[0164] The communication method according to the embodiment of the present application may add different IEs (Information Elements) to the rrcReconfiguration message to indicate that the terminal performs DCI blind detection in the transmission direction only on the PDCCH of the secondary carrier.

[0165] In any embodiment of the present application, the indication message may be a MAC-CE message on the service plane. To clearly illustrate how the MAC-CE message matching the transmission direction is configured in the above embodiments of the present application, the present application also proposes a communication method.

[0166] Figure 4 It is a schematic flowchart of another communication method provided by the embodiment of the present application.

[0167] As Figure 4 shown, this communication method may be applied to an access network device and includes the following steps:

[0168] Step S401, determining the transmission direction of the service data of the terminal at the target moment.

[0169] For the explanatory description of step S401, reference may be made to the relevant description in any embodiment of the present application, and details are not described herein again.

[0170] Step S402, configuring the first byte and the second byte when the transmission direction is switched from downlink to uplink and downlink, or when the transmission direction is switched from uplink to uplink and downlink.

[0171] In an embodiment of the present application, when the transmission direction of the service data of the terminal is switched from downlink to uplink and downlink, or when the transmission direction is switched from uplink to uplink and downlink, the access network device may configure the first byte and the second byte to obtain the configured first byte and the configured second byte.

[0172] Among them, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal.

[0173] Among them, the configured first byte is used to indicate the activation of the downlink secondary carrier, and the configured second byte is used to indicate the activation of the uplink secondary carrier.

[0174] Step S403: Generate a MAC-CE message according to the configured first byte and the configured second byte.

[0175] In the embodiment of the present application, the access network device may generate a MAC-CE message according to the configured first byte and the configured second byte.

[0176] Among them, the configured first byte in the MAC-CE message is used to indicate deactivation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activation of the uplink secondary carrier.

[0177] As an example, the MAC-CE message may be extended to 2 bytes as shown in Figure 5 respectively the first byte (such as Oct1 in Figure 5 ) and the second byte (such as Oct2 in Figure 5 ). Among them, C in the first byte i represents activation (C i equals 1) or deactivation (C i equals 0) of the downlink secondary carrier in the cell corresponding to the index number (SCellIndex = i) of the secondary carrier, and C in the second byte i+8 represents activation (C i+8 equals 1) or deactivation (C i+8 equals 0) of the uplink secondary carrier in the cell corresponding to the index number (SCellIndex = i) of the corresponding secondary cell.

[0178] Among them, Figure 5 R in refers to the reserved bit in Oct1, Figure 5 and R1 in refers to the reserved bit in Oct2.

[0179] Therefore, after the access network device identifies the transmission direction of the terminal's service data, it can send a MAC-CE message to the terminal at the MAC layer in the user plane to notify activation or deactivation of CA in the corresponding transmission direction.

[0180] For example, in the case where the transmission direction is switched from downlink to uplink and downlink, or the transmission direction is switched from uplink to uplink and downlink, it means that both the uplink CA and the downlink CA in the secondary cell (index number SCellIndex = i) are activated. At this time, C in the first byte of the MAC-CE message i and C in the second byte i+8 corresponding index numbers can both be set to 1.

[0181] In any embodiment of the present application, the reserved bit in the configured first byte of the MAC-CE message may be used to represent whether there is a configured second byte in the MAC-CE message.

[0182] For example, when the reserved bit in the configured first byte in the MAC-CE message takes a first set value (such as 1), it is used to indicate that there is a configured second byte in the MAC-CE message. When the reserved bit in the configured first byte in the MAC-CE message takes a second set value (such as 0), it is used to indicate that there is no configured second byte in the MAC-CE message.

[0183] For example, taking the MAC-CE message as Figure 5 shown as an example, when the reserved bit R = 1 in the first byte (i.e., Oct1) shown in Figure 5 it indicates that there is a second byte (such as Figure 5 Oct2 in) in the MAC-CE message. When the reserved bit R is not 1, for example, when the reserved bit R = 0, it indicates that there is no second byte in the MAC-CE message.

[0184] Step S404, sending a MAC-CE message to the terminal; wherein, the MAC-CE message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0185] Wherein, the DCI is used for uplink scheduling and / or downlink scheduling.

[0186] In the embodiment of the present application, the access network device can send a MAC-CE message to the terminal. Correspondingly, after receiving the MAC-CE message, the terminal can perform only the above-mentioned DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0187] The communication method of the embodiment of the present application can realize notifying the terminal to activate or deactivate the secondary carrier in a certain transmission direction by sending a MAC-CE message. Thus, when the terminal performs DCI monitoring on the PDCCH of the secondary carrier according to the currently activated secondary carrier of the transmission direction, if the DCI of the currently activated transmission direction is detected, the terminal will no longer continue to perform the DCI blind detection of the other direction, thereby minimizing the number of DCI blind detections to the greatest extent.

[0188] In any one of the embodiments of the present application, the indication message can be a MAC-CE message on the service plane. To clearly illustrate how to configure the MAC-CE message matching the transmission direction in the above embodiments of the present application, the present application also proposes a communication method.

[0189] Figure 6 It is a schematic flowchart of another communication method provided by the embodiment of the present application.

[0190] As Figure 6 shown, this communication method can be applied to an access network device and includes the following steps:

[0191] Step S601, determine the transmission direction of the service data of the terminal at the target moment.

[0192] For the explanatory description of step S601, reference may be made to the relevant descriptions in any embodiment of this application, which will not be elaborated here.

[0193] Step S602, configure the first byte and the second byte when the transmission direction switches from uplink to downlink, or when the transmission direction switches from uplink and downlink to downlink.

[0194] In the embodiments of this application, when the transmission direction of the service data of the terminal is: switching from uplink to downlink, or switching from uplink and downlink to downlink, the access network device may configure the first byte and the second byte to obtain the configured first byte and the configured second byte.

[0195] Among them, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal.

[0196] Among them, the configured first byte is used to indicate the activation of the downlink secondary carrier, and the configured second byte is used to indicate the deactivation of the uplink secondary carrier.

[0197] Step S603, generate a MAC-CE message according to the configured first byte and the configured second byte, where the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

[0198] In the embodiments of this application, the access network device may generate a MAC-CE message according to the configured first byte and the configured second byte.

[0199] Among them, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

[0200] As an example, the MAC-CE message may be extended to 2 bytes as shown in Figure 5 When the reserved bit R = 1 in the first byte (such as Oct1 in Figure 5 ), it indicates that there is a second byte (such as Oct2 in Figure 5 ) in the MAC-CE message. At this time, the C in the first byte i represents the index number (SCellIndex = i) of the cell corresponding to the secondary carrier (i.e., the secondary cell) where the downlink secondary carrier is activated (C i equals 1) or deactivated (Ci equals 0), and C in the second byte i+8 indicates uplink secondary carrier activation (C i+8 equals 1) or deactivation (C i+8 equals 0) in the cell corresponding to the index number of the secondary cell (SCellIndex = i).

[0201] Among them, Figure 5 R in Figure 5 refers to the reserved bit in Oct1, and R1 in

[0202] refers to the reserved bit in Oct2.

[0203] Therefore, after the access network device identifies the transmission direction of the terminal's service data, it can send a MAC-CE message to the terminal at the MAC layer in the service plane to notify the activation or deactivation of CA in the corresponding transmission direction. i can be set to 1, and C in the second byte i+8 can be set to 0.

[0204] Step S604, sending a MAC-CE message to the terminal; among them, the MAC-CE message is used to instruct the terminal to perform DCI blind detection on the PDCCH of the secondary carrier.

[0205] For the explanation of step S604, reference can be made to the relevant description in any embodiment of this application, and details are not described here.

[0206] The communication method in the embodiment of this application can achieve notifying the terminal to activate or deactivate a secondary carrier in a certain transmission direction by sending a MAC-CE message. Thus, when the terminal performs DCI monitoring on the PDCCH of the secondary carrier according to the currently activated secondary carrier in the transmission direction, if the DCI in the currently activated transmission direction is detected, the blind detection of DCI in another direction will no longer continue, thereby minimizing the number of DCI blind detections to the greatest extent.

[0207] In any embodiment of this application, the indication message can be a MAC-CE message in the service plane. To clearly illustrate how to configure the MAC-CE message matching the transmission direction in the above embodiments of this application, this application also proposes a communication method.

[0208] Figure 7 is a schematic flowchart of another communication method provided by the embodiment of this application.

[0209] As shown in Figure 7 the communication method can be applied to an access network device, including the following steps:

[0210] Step S701: Determine the transmission direction of the service data of the terminal at the target moment.

[0211] For the explanation of step S701, reference can be made to the relevant descriptions in any embodiment of this application, which will not be elaborated here.

[0212] Step S702: Configure the first byte and the second byte when the transmission direction is switched from downlink to uplink, or when the transmission direction is switched from uplink-downlink to uplink.

[0213] In the embodiments of this application, when the transmission direction of the service data of the terminal is switched from downlink to uplink, or when the transmission direction is switched from uplink-downlink to uplink, the access network device can configure the first byte and the second byte to obtain the configured first byte and the configured second byte.

[0214] Among them, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal.

[0215] Among them, the configured first byte is used to indicate deactivating the downlink secondary carrier, and the configured second byte is used to indicate activating the uplink secondary carrier.

[0216] Step S703: Generate a MAC-CE message according to the configured first byte and the configured second byte, where the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0217] In the embodiments of this application, the access network device can generate a MAC-CE message according to the configured first byte and the configured second byte.

[0218] Among them, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0219] As an example, the MAC-CE message can be extended to 2 bytes as shown in Figure 5 When the reserved bit R = 1 in the first byte (Oct1 in Figure 5 ), it indicates that there is a second byte (Oct2 in Figure 5 ) in the MAC-CE message. At this time, the C in the first byte iIndicates the activation (C i equals 1) or deactivation (C i equals 0) of the downlink secondary carrier in the cell corresponding to the index number of the secondary carrier (i.e., SCellIndex = i), and the C i+8 in the second byte indicates the activation (C i+8 equals 1) or deactivation (C i+8 equals 0) of the uplink secondary carrier in the cell corresponding to the index number of the secondary cell (SCellIndex = i).

[0220] Among them, Figure 5 the R in refers to the reserved bit in Oct1, Figure 5 and the R1 in refers to the reserved bit in Oct2.

[0221] Therefore, after the access network device identifies the transmission direction of the terminal's service data, it can send a MAC-CE message to the terminal at the MAC layer in the service plane to notify the activation or deactivation of CA in the corresponding transmission direction.

[0222] For example, in the case where the transmission direction changes from downlink to uplink, or from both downlink and uplink to uplink, it indicates the activation of uplink CA and the deactivation of downlink CA in the secondary cell (index number SCellIndex = i). At this time, the C i in the first byte of the MAC-CE message can be set to 0, and the C i+8 in the second byte can be set to 1.

[0223] Step S704: Send a MAC-CE message to the terminal; among them, the MAC-CE message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0224] For the explanation of step S704, reference can be made to the relevant description in any embodiment of this application, and details are not described herein.

[0225] The communication method in the embodiment of this application can realize notifying the terminal to activate or deactivate the secondary carrier in a certain transmission direction by sending a MAC-CE message. Thus, when the terminal performs DCI monitoring on the PDCCH of the currently activated secondary carrier of the transmission direction, if it detects the DCI of the currently activated transmission direction, it will no longer continue to perform DCI blind detection in the other direction, thereby minimizing the number of DCI blind detections to the greatest extent.

[0226] To clearly illustrate how to determine the transmission direction of the terminal's service data at the target moment in any embodiment of this application, this application also proposes a communication method.

[0227] Figure 8It is a schematic flowchart of another communication method provided by an embodiment of the present application.

[0228] As Figure 8 shown, this communication method can be applied to an access network device and includes the following steps:

[0229] Step S801, obtain a first data volume of uplink service data received by the terminal within multiple time periods before the target time and a second data volume of downlink service data sent by the terminal.

[0230] Among them, the duration of each time period is preset. For example, the duration of each time period can be 1 second, 1 millisecond, etc. At this time, the time period can be called a unit time period.

[0231] In an embodiment of the present application, it is possible to obtain the data volume of uplink service data received by the terminal within multiple time periods before the target time (denoted as the first data volume in this application), and obtain the data volume of downlink service data sent by the terminal within multiple time periods before the target time (denoted as the second data volume in this application).

[0232] Step S802, determine the transmission direction of the terminal in each time period according to the first data volume and the second data volume in each time period.

[0233] In an embodiment of the present application, for any one of the multiple time periods, the transmission direction of the terminal in this time period can be determined according to the first data volume and the second data volume in this time period.

[0234] In any one of the embodiments of the present application, the method for determining the transmission direction of the terminal in each time period can be, for example:

[0235] 1. For any one time period, determine whether the first data volume in this time period is less than or equal to the first configuration threshold, and determine whether the second data volume in this time period is greater than the downlink configuration threshold.

[0236] 2. When the first data volume in this time period is less than or equal to the uplink configuration threshold and the second data volume in this time period is greater than the downlink configuration threshold, determine that the transmission direction of the terminal in this time period is downlink.

[0237] 3. When the first data volume in this time period is greater than the uplink configuration threshold and the second data volume in this time period is less than or equal to the downlink configuration threshold, determine that the transmission direction of the terminal in this time period is uplink.

[0238] 4. When the first data volume in this time period is greater than the uplink configuration threshold and the second data volume in this time period is greater than the downlink configuration threshold, determine that the transmission direction of the terminal in this time period is uplink and downlink.

[0239] Step S803: Determine the transmission direction of the service data of the terminal at the target moment according to the transmission direction of the terminal in multiple time periods.

[0240] In the embodiment of the present application, the transmission direction of the service data of the terminal at the target moment can be determined according to the transmission direction of the terminal in multiple time periods.

[0241] For example, in response to the transmission direction of the terminal being upward in multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is upward.

[0242] For another example, in response to the transmission direction of the terminal being downward in multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is downward.

[0243] For another example, in response to the transmission direction of the terminal being both upward and downward in multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is both upward and downward.

[0244] For another example, in response to the transmission direction of the terminal being upward in the first time period closest to the target moment among multiple time periods, and the transmission direction of the terminal being downward in the remaining time periods except the first time period among multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is switched from downward to upward.

[0245] For another example, in response to the transmission direction of the terminal being upward in the first time period closest to the target moment among multiple time periods, and the transmission direction of the terminal being both upward and downward in the remaining time periods except the first time period among multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is switched from both upward and downward to upward.

[0246] For another example, in response to the transmission direction of the terminal being downward in the first time period closest to the target moment among multiple time periods, and the transmission direction of the terminal being upward in the remaining time periods except the first time period among multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is switched from upward to downward.

[0247] For another example, in response to the transmission direction of the terminal being downward in the first time period closest to the target moment among multiple time periods, and the transmission direction of the terminal being both upward and downward in the remaining time periods except the first time period among multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is switched from both upward and downward to downward.

[0248] For another example, in response to the transmission direction of the terminal being both upward and downward in the first time period closest to the target moment among multiple time periods, and the transmission direction of the terminal being upward in the remaining time periods except the first time period among multiple time periods, determine that the transmission direction of the service data of the terminal at the target moment is switched from upward to both upward and downward.

[0249] For another example, in response to the transmission directions of the terminal in the first time period, which is the closest to the target time among multiple time periods, all being uplink and downlink, and the transmission directions of the terminal in the remaining time periods except the first time period among the multiple time periods being downlink, it is determined that the transmission direction of the service data of the terminal at the target time is switched from downlink to uplink and downlink.

[0250] Step S804: Perform a message configuration process according to the transmission direction to obtain an indication message that matches the transmission direction.

[0251] Step S805: Send the indication message to the terminal; wherein, the indication message is used to instruct the terminal to perform a DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0252] For the explanatory description of steps S804 to S805, reference can be made to the relevant descriptions in any embodiment of this application, and details are not elaborated here.

[0253] In the communication method of the embodiment of this application, by comprehensively considering the first data volume of the uplink service data received by the terminal in multiple time periods and the second data volume of the downlink service data sent by the terminal, the transmission direction of the service data of the terminal is determined, which can improve the accuracy and reliability of the determination result.

[0254] The above are the method embodiments executed by the access network device. This application also proposes a communication method executed by the terminal.

[0255] Figure 9 It is a schematic flowchart of another communication method provided by the embodiment of this application.

[0256] As Figure 9 shown, this communication method can be applied to the terminal and includes the following steps:

[0257] Step S901: Receive the indication message sent by the access network device, wherein the indication message is obtained by determining the transmission direction of the service data of the terminal at the target time and performing a message configuration process according to the transmission direction.

[0258] Step S902: Perform a DCI blind detection of the transmission direction on the PDCCH of the secondary carrier according to the indication message.

[0259] It should be noted that the above explanatory description of the method embodiments executed by the access network device also applies to this embodiment, and their implementation principles are similar, and details are not elaborated here.

[0260] In the communication method according to the embodiment of the present application, when the access network device determines the transmission direction of the service data of the terminal, it instructs the terminal to perform DCI blind detection only in the transmission direction on the PDCCH of the secondary carrier, rather than performing DCI blind detection in the other direction or other directions, which can reduce the number of DCI blind detections of the terminal and achieve the purpose of power saving of the terminal and reducing data processing delay.

[0261] In any one of the embodiments of the present application, the present application proposes a method for activating unidirectional services through the control plane or the service plane during carrier aggregation. When the access network device determines the transmission direction (or called service direction) of the service data of the terminal, it deletes the carrier parameters in the other direction through the control plane reconfiguration message, or notifies the deactivation of the secondary carrier in the unidirectional direction through the service plane MAC-CE message, so as to achieve the purpose that the terminal does not perform DCI blind detection in the corresponding secondary carrier direction, effectively reducing the number of DCI blind detections of the terminal and achieving the purpose of power saving of the terminal and reducing data processing delay.

[0262] As an example, first, the access network device can determine whether the terminal is performing downlink services or uplink services according to the downlink rate or uplink rate of the terminal, that is, determine the transmission direction of the service data of the terminal. One judgment method is: the data volume of the download service or upload service in several consecutive cycles or several unit time periods is greater than the set threshold. For example, start a periodic timer with a duration of Timer_A, and count the data volume of the download service or upload service within the duration of Timer_A. If the data volume of the download service in multiple Timer_A cycles is greater than the set threshold, it is determined that the terminal is performing downlink direction services (that is, the transmission direction of the service data of the terminal is downlink), or if the data volume of the upload service in multiple Timer_A cycles is greater than the set threshold, it is determined that the terminal is performing uplink direction services (that is, the transmission direction of the service data of the terminal is uplink). After that, the access network device can notify the terminal whether there is a secondary carrier for the service in the corresponding direction by adding, modifying, and deleting the corresponding configuration in the RRC layer through the control plane (the following method 1) to implement DCI blind detection of the secondary carrier in the corresponding direction, or notify the terminal whether the secondary carrier for the service in the corresponding direction is activated through the service plane MAC-CE message in the MAC layer (the following method 2) to implement DCI blind detection of the secondary carrier in the corresponding direction.

[0263] Method 1: Notify the terminal through the control plane.

[0264] After the access network device determines the transmission direction of the service data of the terminal, when adding a secondary carrier for the terminal, it only adds the BWP-related information corresponding to the transmission direction. Or, when initially adding a secondary carrier, it includes uplink BWP information and downlink BWP information, but when the transmission direction changes, it adds or deletes the BWP-related information in the corresponding direction. Specifically as follows:

[0265] 1) If the access network device has not added a secondary carrier for the terminal, the access network device determines whether the transmission direction of the terminal's service data is uplink (or upload) or downlink (or download). In the rrcReconfiguration message for adding the secondary carrier, according to the transmission direction, only the BWP information corresponding to the transmission direction is added.

[0266] A. When the transmission direction is downlink, the rrcReconfiguration message only includes downlink BWP information (or downlink BWP-related information) and PDSCH-Config information.

[0267] B. When the transmission direction is uplink, the rrcReconfiguration message only includes uplink BWP information (or uplink BWP-related information) and downlink BWP information, and the downlink BWP information does not include PDSCH-Config information. The downlink BWP information includes PDCCH-Config information. Since the PDCCH channel is included in the PDCCH-Config information, when the terminal determines that there is no PDSCH channel in the PDSCH-Config information in the rrcReconfiguration message, it does not monitor the DCI in the downlink direction.

[0268] 2) If the access network device has already added a secondary carrier for the terminal, the access network device periodically determines the transmission direction of the terminal's service data. When the transmission direction changes, according to the current status information, the BWP-related information of the changed transmission direction is added through the rrcReconfiguration message, or the BWP-related information of the previous transmission direction is deleted.

[0269] A. When the transmission direction changes from downlink to uplink, the rrcReconfiguration message adds uplink BWP information and deletes the PDSCH-Config information in the downlink BWP information. Among them, deleting the PDSCH-Config information is done by reconfiguring the downlink BWP information and the downlink BWP information does not include PDSCH-Config information.

[0270] B. When the transmission direction changes from downlink to uplink and downlink, the rrcReconfiguration message adds uplink BWP information, that is, the rrcReconfiguration message includes both uplink BWP information and downlink BWP information.

[0271] C. When the transmission direction changes from uplink to downlink, the rrcReconfiguration message adds downlink BWP information and deletes the uplink BWP information.

[0272] D. When the transmission direction changes from uplink to uplink and downlink, the PDSCH-Config information in the downlink BWP information is added to the rrcReconfiguration message.

[0273] E. When the transmission direction changes from uplink and downlink to downlink, the uplink BWP information is deleted from the rrcReconfiguration message.

[0274] F. When the transmission direction changes from uplink and downlink to uplink, the PDSCH-Config information in the downlink BWP information is deleted from the rrcReconfiguration message. Among them, deleting the PDSCH-Config is performed by reconfiguring the downlink BWP information and the downlink BWP information does not include the PDSCH-Config information.

[0275] In summary, when the terminal performs DCI monitoring on the PDCCH of the secondary carrier according to whether the corresponding direction BWP information is configured in the rrcReconfiguration message, it only monitors the DCI configured for the current BWP and does not perform blind detection of the DCI in the other direction, thereby minimizing the number of DCI blind detections to the greatest extent.

[0276] It should be noted that since the reconfiguration process requires adding different IEs in the rrcReconfiguration message and the control is relatively complex, in this application, the MAC-CE message on the service plane can also be used to notify the terminal, that is, the following method 2 is used to activate and deactivate the secondary carrier in the corresponding transmission direction.

[0277] Method 2: Notify the terminal through the MAC-CE message on the service plane.

[0278] When adding a secondary carrier to the terminal, both the uplink BWP information and the downlink BWP information are added. According to the identified transmission direction of the terminal's service data, a field is added to the MAC-CE message to indicate the activation or deactivation of the uplink CA or the downlink CA.

[0279] Specifically, the MAC-CE message can be extended to 2 bytes as shown in Figure 5 When the reserved bit R = 1 in the first byte (such as Oct1 in Figure 5 ), it indicates that there is a second byte in the MAC-CE message (such as Oct2 in Figure 5 ). At this time, the C in the first byte i represents the index number (SCellIndex = i) of the cell where the corresponding secondary carrier is located (i.e., the secondary cell), and the downlink secondary carrier in the cell is activated (C i equals 1) or deactivated (C i equals 0), and the C in the second bytei+8 Indicates the activation (C i+8 equals 1) or deactivation (C i+8 equals 0) of the uplink secondary carrier in the cell corresponding to the index number (SCellIndex = i) of the corresponding secondary carrier.

[0280] Therefore, after the access network device identifies the transmission direction of the terminal's service data, it can send a MAC-CE message to the terminal at the MAC layer in the service plane to notify the activation or deactivation of CA in the corresponding transmission direction.

[0281] Among them, if both the uplink CA and the downlink CA in the secondary cell (index number SCellIndex = i) are activated, the C i in the first byte and the C i+8 corresponding index numbers in the second byte are both set to 1; if the downlink CA is activated, the C i in the first byte is set to 1, and the C i+8 in the second byte is set to 0; if the uplink CA is activated, the C i in the first byte is set to 0, and the C i+8 in the second byte is set to 1; if both the uplink CA and the downlink CA are deactivated, the C i in the first byte and the C i+8 corresponding index numbers in the second byte are both set to 0.

[0282] When the transmission direction of the terminal's service data changes, it can, according to the current status information, notify the terminal to activate or deactivate the service in a certain transmission direction by sending a MAC-CE message.

[0283] A. When the transmission direction changes from downlink to uplink, the downlink CA in the secondary cell (SCellIndex = i) is deactivated, and the uplink CA is activated. The C i in the first byte of the MAC-CE message is set to 0, and the C i+8 in the second byte is set to 1.

[0284] B. When the transmission direction changes from downlink to downlink and uplink, both the uplink CA and the downlink CA in the secondary cell (SCellIndex = i) are activated. The C i in the first byte and the C i+8 corresponding index numbers of the secondary carrier cell in the second byte are both set to 1.

[0285] C. When the transmission direction changes from uplink to downlink, the downlink CA in the secondary cell (SCellIndex = i) is activated, and the uplink CA is deactivated. The C i in the first byte of the MAC-CE message is set to 1, and the Ci+8 The index number of the corresponding secondary carrier cell is set to 0.

[0286] D. When the transmission direction changes from uplink to uplink and downlink, both the uplink CA and downlink CA in the secondary cell (SCellIndex = i) are activated, and the C in the first byte and the C in the second byte in the MAC-CE message i and the C in the second byte i+8 The index numbers of the corresponding secondary carrier cells are both set to 1.

[0287] E. When the transmission direction changes from uplink and downlink to downlink, the downlink CA in the secondary cell (SCellIndex = i) is activated, the uplink CA is deactivated, and the C in the first byte in the MAC-CE message i is set to 1, and the C in the second byte i+8 is set to 0.

[0288] F. When the transmission direction changes from uplink and downlink to uplink, the downlink CA in the secondary cell (SCellIndex = i) is deactivated, the uplink CA is activated, and the C in the first byte in the MAC-CE message i is set to 0, and the C in the second byte i+8 is set to 1.

[0289] In summary, when the terminal monitors DCI on the PDCCH of the secondary carrier according to the currently active transmission direction, if it detects the DCI of the currently active transmission direction, it will no longer continue the blind detection of the DCI in the other direction, thus minimizing the number of DCI blind detections.

[0290] In summary, compared with the prior art, the technical solution provided by this application has at least the following advantages:

[0291] 1. By modifying the BWP information in the corresponding direction in the secondary carrier, notifying the terminal that DCI blind detection is not required in a certain direction, it is possible to achieve dynamic unidirectional activation of the secondary carrier, thereby reducing the number of blind detections of the terminal.

[0292] 2. When the uplink BWP information and the downlink BWP information are tightly coupled, by expanding the MAC-CE message, activating CA unidirectionally or bidirectionally, notifying the terminal that DCI blind detection is not required in a certain direction, it is possible to achieve unidirectional or bidirectional activation of CA, avoiding ineffective DCI monitoring, and it is possible to dynamically adjust the activation direction of the CA service, avoiding ineffective DCI monitoring.

[0293] The technical solutions provided by the embodiments of this application can be applied to a variety of systems, especially 5G systems. For example, the applicable systems can be Global System of Mobile communication (GSM for short), Code Division Multiple Access (CDMA for short), Wideband Code Division Multiple Access (WCDMA for short), General Packet Radio Service (GPRS for short), Long Term Evolution (LTE for short), LTE Frequency Division Duplex (FDD for short), LTE Time Division Duplex (TDD for short), Long Term Evolution Advanced (LTE-A for short), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX for short), 5G New Radio (NR for short) systems, etc. Both terminals and network devices are included in these various systems. The system may also include a core network part, such as an Evolved Packet System (EPS for short), 5G System (5GS for short), etc.

[0294] To implement the above embodiments, this application also provides an access network device.

[0295] Figure 10 It is a schematic structural diagram of an access network device provided according to the embodiments of this application.

[0296] As Figure 10 shown, the access network device may include a transceiver 1000, a processor 1010, and a memory 1020, where:

[0297] The transceiver 1000 is used to receive and send data under the control of the processor 1010.

[0298] Among them, in Figure 10Among them, the bus architecture may include any number of interconnected buses and bridges, specifically, various circuits of one or more processors represented by processor 1010 and memory represented by memory 1020 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and thus will not be further described herein. The bus interface provides an interface. The transceiver 1000 may be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium, and these transmission media include wireless channels, wired channels, optical fiber cables, and other transmission media. The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1010 when executing operations.

[0299] The processor 1010 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and the processor may also adopt a multi-core architecture.

[0300] The processor 1010 calls the computer program stored in the memory and performs the following operations: determining the transmission direction of the service data of the terminal at the target moment; performing a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction; sending the indication message to the terminal; wherein, the indication message is used to indicate that the terminal performs DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0301] As a possible implementation manner, the indication message is the first Radio Resource Control reconfiguration rrcReconfiguration message of the control plane. When the processor 1010 performs the message configuration process according to the transmission direction to obtain an indication message matching the transmission direction, specifically: querying whether the access network device has added a secondary carrier for the terminal to obtain a query result; performing a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message.

[0302] As a possible implementation, when the query result indicates that no secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction is downlink, a downlink secondary carrier is added to the terminal; a message configuration process is performed according to the downlink secondary carrier to obtain the first rrcReconfiguration message associated with the downlink secondary carrier. Among them, the first rrcReconfiguration message only includes the first downlink bandwidth part BWP information. Among them, the first downlink BWP information includes the physical resource information used by the downlink secondary carrier. The physical resource information used by the downlink secondary carrier includes the PDCCH configuration PDCCH-Config information and the physical downlink shared channel configuration PDSCH-Config information. The PDCCH-Config information is used to represent the information used for DCI blind detection. The PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0303] As a possible implementation, when the query result indicates that no secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction is uplink, an uplink secondary carrier is added to the terminal; a message configuration process is performed according to the uplink secondary carrier to obtain the first rrcReconfiguration message associated with the uplink secondary carrier. Among them, the first rrcReconfiguration message includes the first uplink BWP information and the second downlink BWP information. Among them, the first uplink BWP information includes the physical resource information used by the uplink secondary carrier. Among them, the second downlink BWP information contains the PDCCH-Config information but does not contain the PDSCH-Config information. The PDCCH-Config information is used to represent the information used for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0304] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction is switched from downlink to uplink, the message configuration process is performed according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. The message content in the first rrcReconfiguration message is obtained by adding the second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message. The second rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The third downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data. The second uplink BWP information includes the physical resource information used by the uplink secondary carrier.

[0305] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction is switched from downlink to uplink and downlink, the message configuration process is performed according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. The message content in the first rrcReconfiguration message is obtained by adding the third uplink BWP information to the third rrcReconfiguration message. The third rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The third rrcReconfiguration message includes the fourth downlink BWP information. The fourth downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the uplink BWP information includes the physical resource information used by the uplink secondary carrier.

[0306] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction is from uplink to downlink, the message configuration process is performed according to the added downlink secondary carrier to obtain the first rrcReconfiguration message. The message content in the first rrcReconfiguration message is obtained by adding the fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message. The fourth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment. The fourth uplink BWP information includes the physical resource information used by the added uplink secondary carrier for the terminal, the fifth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

[0307] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction is from uplink to uplink and downlink, the message configuration process is performed according to the added downlink secondary carrier to obtain the first rrcReconfiguration message. The message content in the first rrcReconfiguration message is obtained by adding the sixth downlink BWP information to the fifth rrcReconfiguration message. The fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment. The fifth rrcReconfiguration message includes the fifth uplink BWP information. The fifth uplink BWP information includes the physical resource information used by the added uplink secondary carrier for the terminal, the sixth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

[0308] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor 1010 performs a message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically, when the transmission direction switches from uplink-downlink to downlink, the message configuration process is performed according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information in the sixth rrcReconfiguration message. Among them, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. Among them, the sixth rrcReconfiguration message also includes the seventh downlink BWP information. Among them, the sixth uplink BWP information includes the physical resource information used by the uplink secondary carrier, and the seventh downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal. The physical resource information used by the downlink secondary carrier includes the PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by the downlink service data.

[0309] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the processor 1010 configures the first rrcReconfiguration message according to the query result and the transmission direction. Specifically, when the transmission direction switches from uplink-downlink to uplink, the message configuration process is performed according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message. Among them, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message. Among them, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time. The seventh rrcReconfiguration message also includes the seventh uplink BWP information. Among them, the seventh uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, and the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier. The PDSCH-Config information is used to characterize the physical resource information used by the downlink service data.

[0310] As a possible implementation, the indication message is a Medium Access Control Control Element (MAC-CE) message on the service plane. The processor 1010 executes a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Specifically, in the case where the transmission direction is from downlink to uplink, or from downlink / uplink to uplink, the message configuration process is executed to configure the first byte and the second byte. The first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal. According to the configured first byte and the configured second byte, a MAC-CE message is generated. The configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0311] As a possible implementation, the indication message is a MAC-CE message on the service plane. The processor 1010 executes a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Specifically, in the case where the transmission direction is from downlink to downlink / uplink, or from uplink to downlink / uplink, the message configuration process is executed to configure the first byte and the second byte. The first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal. According to the configured first byte and the configured second byte, a MAC-CE message is generated. The configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0312] As a possible implementation, the indication message is a MAC-CE message on the service plane. The processor 1010 executes a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Specifically, in the case where the transmission direction is from uplink to downlink, or from downlink / uplink to downlink, the message configuration process is executed to configure the first byte and the second byte. The first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal. According to the configured first byte and the configured second byte, a MAC-CE message is generated. The configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate deactivating the uplink secondary carrier.

[0313] As a possible implementation, the reserved bit in the configured first byte of the MAC-CE message is used to represent whether there is a configured second byte in the MAC-CE message.

[0314] As a possible implementation, the processor 1010 determines the transmission direction of the service data of the terminal at the target moment, specifically: obtaining the first data volume of the uplink service data received by the terminal in multiple time periods before the target moment and the second data volume of the downlink service data sent by the terminal; determining the transmission direction of the terminal in each time period according to the first data volume and the second data volume in each time period; and determining the transmission direction of the terminal at the target moment according to the transmission directions of the terminal in multiple time periods.

[0315] It should be noted here that the access network device provided in the embodiment of the present application can implement all the method steps implemented by the above Figures 2 to 8 method embodiment and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiment in this embodiment will not be specifically described herein.

[0316] To implement the above embodiment, the present application also provides a terminal.

[0317] Figure 11 It is a schematic structural diagram of a terminal provided according to an embodiment of the present application.

[0318] As Figure 11 shown, the terminal may include a transceiver 1100, a processor 1110, a memory 1120, and a user interface 1130, where:

[0319] The transceiver 1100 is used to receive and send data under the control of the processor 1110.

[0320] Among them, in Figure 11 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits represented by one or more processors 1110 represented by the processor 1110 and the memory 1120 represented by the memory 1120 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits together, which are well known in the art, so they will not be further described herein. The bus interface provides an interface. The transceiver 1100 may be multiple components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on the transmission medium, and these transmission media include wireless channels, wired channels, optical cables, etc. For different user devices, the user interface 1130 may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0321] The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 may store the data used by the processor 1110 when performing operations.

[0322] Optionally, the processor 1110 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). The processor may also adopt a multi-core architecture.

[0323] The processor 1110 is used to execute the method provided in the embodiment of the present application according to the obtained executable instructions by calling the program stored in the memory 1120. Figure 9 The processor 1110 and the memory 1120 may also be physically separated.

[0324] That is, the processor 1110 calls the computer program stored in the memory 1120 and performs the following operations: receiving an indication message sent by an access network device, where the indication message is obtained by determining the transmission direction of the service data of the terminal at a target time and performing a message configuration process according to the transmission direction; performing a DCI blind detection of the transmission direction on the PDCCH of the secondary carrier according to the indication message.

[0325] It should be noted here that the terminal provided in the embodiment of the present application can implement all the method steps implemented by the above Figure 9 method embodiment and can achieve the same technical effect. The same parts and beneficial effects as those in the method embodiment in this embodiment will not be specifically described herein.

[0326] Corresponding to the communication method provided in the above Figures 2 to 8 embodiment, the present application also provides a communication device. Since the communication device provided in the embodiment of the present application corresponds to the communication method provided in the above Figures 2 to 8 embodiment, the implementation manner of the communication method is also applicable to the communication device provided in the embodiment of the present application and will not be described in detail in the embodiment of the present application.

[0327] To implement the above embodiment, the present application also proposes a communication device.

[0328] Figure 12 It is a schematic structural diagram of a communication device provided in the embodiment of the present application.

[0329] As Figure 12 shown, the communication device 1200 may be applied to an access network device and includes: a determination unit 1210, an execution unit 1220, and a sending unit 1230.

[0330] Among them, a determination unit 1210 is configured to determine the transmission direction of the service data of the terminal at a target moment.

[0331] An execution unit 1220 is configured to perform a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction.

[0332] A sending unit 1230 is configured to send the indication message to the terminal; wherein, the indication message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

[0333] As a possible implementation manner, the indication message is a first radio resource control reconfiguration rrcReconfiguration message of the control plane. The execution unit 1220 is specifically configured to: query whether the access network device has added a secondary carrier to the terminal to obtain a query result; perform a message configuration process according to the query result and the transmission direction to obtain a first rrcReconfiguration message.

[0334] As a possible implementation manner, when the query result indicates that no secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: add a downlink secondary carrier to the terminal when the transmission direction is downlink; perform a message configuration process according to the downlink secondary carrier to obtain a first rrcReconfiguration message associated with the downlink secondary carrier; wherein, the first rrcReconfiguration message only includes first downlink BWP information; wherein, the first downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDCCH-Config information and PDSCH-Config information. The PDCCH-Config information is used to represent the information used for DCI blind detection; the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0335] As a possible implementation, when the query result indicates that no secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction is uplink, add an uplink secondary carrier to the terminal; perform a message configuration process according to the uplink secondary carrier to obtain a first rrcReconfiguration message associated with the uplink secondary carrier; wherein, the first rrcReconfiguration message includes first uplink BWP information and second downlink BWP information; wherein, the first uplink BWP information includes physical resource information used by the uplink secondary carrier; wherein, the second downlink BWP information contains PDCCH-Config information but does not contain PDSCH-Config information, and the PDCCH-Config information is used to represent the information used for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

[0336] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction is switched from downlink to uplink, perform a message configuration process according to the uplink secondary carrier already added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message; wherein, the second rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; wherein, the third downlink BWP information includes physical resource information used by the downlink secondary carrier already added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data; the second uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0337] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction is switched from downlink to uplink and downlink, perform a message configuration process according to the added uplink secondary carrier to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding third uplink BWP information to the third rrcReconfiguration message; wherein, the third rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; the third rrcReconfiguration message includes fourth downlink BWP information; wherein, the fourth downlink BWP information includes physical resource information used by the added downlink secondary carrier for the terminal, and the uplink BWP information includes physical resource information used by the uplink secondary carrier.

[0338] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction is switched from uplink to downlink, perform a message configuration process according to the added downlink secondary carrier to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message; wherein, the fourth rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; wherein, the fourth uplink BWP information includes physical resource information used by the added uplink secondary carrier for the terminal, the fifth downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent physical resource information used for downlink service data.

[0339] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction is switched from uplink to uplink and downlink, perform a message configuration process according to the added downlink secondary carrier to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by adding sixth downlink BWP information to the fifth rrcReconfiguration message; wherein, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the fifth rrcReconfiguration message includes fifth uplink BWP information; wherein, the fifth uplink BWP information includes the physical resource information used by the added uplink secondary carrier for the terminal, the sixth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by the downlink service data.

[0340] As a possible implementation manner, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction is switched from uplink and downlink to downlink, perform a message configuration process according to the added uplink secondary carrier to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information from the sixth rrcReconfiguration message; wherein, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; wherein, the sixth rrcReconfiguration message further includes seventh downlink BWP information; wherein, the sixth uplink BWP information includes the physical resource information used by the uplink secondary carrier, and the seventh downlink BWP information includes the physical resource information used by the added downlink secondary carrier for the terminal, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by the downlink service data.

[0341] As a possible implementation, when the query result indicates that a secondary carrier has been added to the terminal, the execution unit 1220 is specifically configured to: when the transmission direction switches from uplink-downlink to uplink, perform a message configuration process according to the downlink secondary carrier added to the terminal to obtain a first rrcReconfiguration message; wherein, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message; wherein, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the seventh rrcReconfiguration message further includes the seventh uplink BWP information; wherein, the seventh uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

[0342] As a possible implementation, when the indication message is a MAC-CE message on the user plane, the execution unit 1220 is specifically configured to: when the transmission direction switches from downlink to uplink, or when the transmission direction switches from uplink-downlink to uplink, perform a message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added to the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added to the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; wherein, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0343] As a possible implementation, when the indication message is a MAC-CE message on the user plane, the execution unit 1220 is specifically configured to: when the transmission direction switches from downlink to uplink-downlink, or when the transmission direction switches from uplink to uplink-downlink, perform a message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added to the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added to the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; wherein, the configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

[0344] As a possible implementation manner, it is indicated that the message is a MAC-CE message on the service plane. The execution unit 1220 is specifically configured to: when the transmission direction is switched from uplink to downlink, or when the transmission direction is switched from uplink and downlink to downlink, perform a message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; generate a MAC-CE message according to the configured first byte and the configured second byte; wherein, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

[0345] As a possible implementation manner, the reserved bit in the configured first byte in the MAC-CE message is used to represent whether there is a configured second byte in the MAC-CE message.

[0346] As a possible implementation manner, the determination unit 1210 is specifically configured to: obtain a first data volume of uplink service data received by the terminal and a second data volume of downlink service data sent by the terminal within a plurality of time periods before the target time; determine the transmission direction of the terminal in each time period according to the first data volume and the second data volume in each time period; determine the transmission direction of the terminal at the target time according to the transmission directions of the terminal in the plurality of time periods.

[0347] It should be noted here that the communication device provided in the embodiment of the present application can implement all the method steps implemented in the above Figures 2 to 8 method embodiment, and can achieve the same technical effects. The same parts and beneficial effects as those in the method embodiment in this embodiment will not be specifically described here.

[0348] Corresponding to the communication method provided in the above Figure 9 embodiment, the present application further provides a communication device. Since the communication device provided in the embodiment of the present application corresponds to the communication method provided in the above Figure 9 embodiment, the implementation manner of the communication method is also applicable to the communication device provided in the embodiment of the present application, and will not be described in detail in the embodiment of the present application.

[0349] To implement the above embodiment, the present application further proposes a communication device.

[0350] Figure 13 It is a schematic structural diagram of another communication device provided in the embodiment of the present application.

[0351] As Figure 13 shown, the communication device 1300 can be applied to a terminal and includes: a receiving unit 1310 and a blind detection unit 1320.

[0352] Among them, a receiving unit 1310 is configured to receive an indication message sent by an access network device, where the indication message is obtained by determining the transmission direction of the terminal's service data at a target moment and performing a message configuration process according to the transmission direction.

[0353] A blind detection unit 1320 is configured to perform blind detection of DCI for the transmission direction on the PDCCH of a secondary carrier according to the indication message.

[0354] It should be noted here that the communication device provided in the embodiment of the present application can implement all the method steps implemented by the above Figure 9 method embodiment, and can achieve the same technical effects. Here, the same parts and beneficial effects as those in the method embodiment will not be specifically described again.

[0355] It should be noted that the division of units in the embodiment of the present application is illustrative, only a logical function division. In actual implementation, there may be other division methods. In addition, in each embodiment of the present application, each functional unit may be integrated into a processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0356] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network-side device, etc.) or a processor to execute all or part of the steps of the method in each embodiment of the present application. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc that can store program codes.

[0357] On the other hand, the embodiment of the present application further provides a processor-readable storage medium storing a computer program for causing the processor to execute the method shown in any Figures 2 to 9 embodiment of the present application.

[0358] Among them, the above-mentioned processor-readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to magnetic memories (such as floppy disks, hard disks, magnetic tapes, magneto-optical discs (MO), etc.), optical memories (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor memories (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASH), solid-state drives (SSD)), etc.

[0359] To implement the above embodiments, the present application also proposes a computer program product.

[0360] Among them, the computer program product includes a computer program, and when the computer program is executed by a processor, it implements the present application Figures 2 to 9 The method shown in any of the embodiments.

[0361] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories and optical memories, etc.) containing computer-usable program code.

[0362] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 One process or multiple processes and / or blocks Figure 1 One block or multiple blocks.

[0363] These processor-executable instructions can also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the processor-readable memory generate a manufactured product including an instruction device, and the instruction device implements the functions specified in Figure 1 One process or multiple processes and / or blocks Figure 1 One block or multiple blocks.

[0364] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus, such that a series of operation steps are performed on the computer or other programmable apparatus to generate a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one process or a plurality of processes and / or boxes Figure 1 one process or a plurality of processes and / or boxes Figure 1 steps for implementing the functions specified in one box or a plurality of boxes.

[0365] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to cover these modifications and variations.

Claims

1. A communication method, characterized in that, Applied to an access network device, including: Determine the transmission direction of the terminal's service data at the target moment; Execute a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction; Send the indication message to the terminal; wherein, the indication message is used to instruct the terminal to perform blind detection of downlink control information (DCI) on the physical downlink control channel (PDCCH) of the secondary carrier.

2. The method according to claim 1, characterized in that, The indication message is the first radio resource control reconfiguration (rrcReconfiguration) message of the control plane. The executing the message configuration process according to the transmission direction to obtain an indication message matching the transmission direction includes: Query whether the access network device has added a secondary carrier for the terminal to obtain a query result; Execute the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message.

3. The method according to claim 2, characterized in that, When the query result indicates that no secondary carrier has been added for the terminal, the executing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: Add a downlink secondary carrier for the terminal when the transmission direction is downlink; Execute the message configuration process according to the downlink secondary carrier to obtain the first rrcReconfiguration message associated with the downlink secondary carrier; Wherein, the first rrcReconfiguration message only includes the first downlink bandwidth part (BWP) information; Wherein, the first downlink BWP information includes the physical resource information used by the downlink secondary carrier. The physical resource information used by the downlink secondary carrier includes physical downlink control channel configuration (PDCCH-Config) information and physical downlink shared channel configuration (PDSCH-Config) information. The PDCCH-Config information is used to represent the information used for DCI blind detection; the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

4. The method according to claim 2, wherein When the query result indicates that no secondary carrier has been added for the terminal, the executing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: Add an uplink secondary carrier for the terminal when the transmission direction is uplink; Execute the message configuration process according to the uplink secondary carrier to obtain the first rrcReconfiguration message associated with the uplink secondary carrier; Wherein, the first rrcReconfiguration message includes the first uplink BWP information and the second downlink BWP information; Wherein, the first uplink BWP information includes the physical resource information used by the uplink secondary carrier; Among them, the second downlink BWP information includes PDCCH-Config information but does not include PDSCH-Config information. The PDCCH-Config information is used to represent the information for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

5. The method according to claim 2, characterized in that In the case where the query result indicates that a secondary carrier has been added to the terminal, performing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: In the case where the transmission direction is from downlink to uplink, performing the message configuration process according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message; Among them, the message content in the first rrcReconfiguration message is obtained by adding the second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message; Among them, the second rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; Among them, the third downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data; the second uplink BWP information includes the physical resource information used by the uplink secondary carrier.

6. The method according to claim 2, wherein In the case where the query result indicates that a secondary carrier has been added to the terminal, performing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: In the case where the transmission direction is from downlink to uplink and downlink, performing the message configuration process according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message; Among them, the message content in the first rrcReconfiguration message is obtained by adding the third uplink BWP information to the third rrcReconfiguration message; Among them, the third rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; the third rrcReconfiguration message includes the fourth downlink BWP information; Among them, the fourth downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the uplink BWP information includes the physical resource information used by the uplink secondary carrier.

7. The method according to claim 2, wherein When the query result indicates that a secondary carrier has been added to the terminal, performing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: When the transmission direction is from uplink to downlink, performing the message configuration process according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by adding fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message; Wherein, the fourth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; Wherein, the fourth uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the fifth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by downlink service data.

8. The method according to claim 2, characterized in that, When the query result indicates that a secondary carrier has been added to the terminal, performing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: When the transmission direction is from uplink to uplink and downlink, performing the message configuration process according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by adding sixth downlink BWP information to the fifth rrcReconfiguration message; Wherein, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the fifth rrcReconfiguration message includes fifth uplink BWP information; Wherein, the fifth uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the sixth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by downlink service data.

9. The method according to claim 2, wherein When the query result indicates that a secondary carrier has been added to the terminal, performing the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message includes: When the transmission direction is from uplink-downlink handover to downlink, performing the message configuration process according to the uplink secondary carrier added to the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information in the sixth rrcReconfiguration message; Wherein, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the sixth rrcReconfiguration message further includes seventh downlink BWP information; Wherein, the sixth uplink BWP information includes the physical resource information used by the uplink secondary carrier, the seventh downlink BWP information includes the physical resource information used by the downlink secondary carrier added to the terminal, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

10. The method according to claim 2, characterized in that When the query result indicates that a secondary carrier has been added to the terminal, configuring the first rrcReconfiguration message according to the query result and the transmission direction includes: When the transmission direction is from uplink-downlink handover to uplink, performing the message configuration process according to the downlink secondary carrier added to the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message; Wherein, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target moment; the seventh rrcReconfiguration message further includes seventh uplink BWP information; Wherein, the seventh uplink BWP information includes the physical resource information used by the uplink secondary carrier added to the terminal, the eighth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

11. The method according to claim 1, wherein The indication message is a Medium Access Control Control Element (MAC-CE) message on the service plane. The process of performing message configuration according to the transmission direction to obtain an indication message matching the transmission direction includes: When the transmission direction changes from downlink to uplink, or when the transmission direction changes from full duplex (downlink and uplink) to uplink, perform the message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; Generate the MAC-CE message according to the configured first byte and the configured second byte; Wherein, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

12. The method according to claim 1, wherein The indication message is a MAC-CE message on the service plane. The process of performing message configuration according to the transmission direction to obtain an indication message matching the transmission direction includes: When the transmission direction changes from downlink to full duplex (downlink and uplink), or when the transmission direction changes from uplink to full duplex (downlink and uplink), perform the message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; Generate the MAC-CE message according to the configured first byte and the configured second byte; Wherein, the configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

13. The method according to claim 1, characterized in that, The indication message is a MAC-CE message on the service plane. The process of performing message configuration according to the transmission direction to obtain an indication message matching the transmission direction includes: When the transmission direction changes from uplink to downlink, or when the transmission direction changes from full duplex (downlink and uplink) to downlink, perform the message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; Generate the MAC-CE message according to the configured first byte and the configured second byte; Wherein, the configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate deactivating the uplink secondary carrier.

14. The method according to any one of claims 11-13, characterized in that, The reserved bit in the configured first byte of the MAC-CE message is used to represent whether the configured second byte exists in the MAC-CE message.

15. The method according to any one of claims 1 to 13, characterized in that, The determining the transmission direction of the service data of the terminal at the target moment includes: Obtain a first data volume of the uplink service data received by the terminal within multiple time periods before the target time and a second data volume of the downlink service data sent by the terminal. Determine the transmission direction of the terminal within each of the time periods according to the first data volume and the second data volume within each of the time periods. Determine the transmission direction of the terminal at the target time according to the transmission directions of the terminal within the multiple time periods.

16. A communication method, characterized in that, Applied to a terminal, including: Receive an indication message sent by an access network device, where the indication message is obtained by determining the transmission direction of the service data of the terminal at the target time and performing a message configuration process according to the transmission direction. Perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier according to the indication message.

17. An access network device, characterized in that, Including a memory, a transceiver, and a processor; The memory is used to store a computer program; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Determine the transmission direction of the service data of the terminal at the target time. Perform a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Send the indication message to the terminal; where the indication message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

18. The access network device according to claim 17, characterized in that, The indication message is a first radio resource control reconfiguration rrcReconfiguration message of the control plane. When the processor performs the message configuration process according to the transmission direction to obtain an indication message matching the transmission direction, specifically: Query whether the access network device has added a secondary carrier for the terminal to obtain a query result. Perform the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message.

19. The access network device according to claim 18, characterized in that, When the query result indicates that no secondary carrier has been added for the terminal, when the processor performs the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, specifically: Add a downlink secondary carrier for the terminal when the transmission direction is downlink. Perform the message configuration process according to the downlink secondary carrier to obtain the first rrcReconfiguration message associated with the downlink secondary carrier. Wherein, only the first downlink BWP information is included in the first rrcReconfiguration message. Wherein, the first downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDCCH-Config information and PDSCH-Config information. The PDCCH-Config information is used to characterize the information used for DCI blind detection; the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

20. The access network device according to claim 18, characterized in that, When the query result indicates that no secondary carrier has been added to the terminal, the processor executes the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, specifically as follows: When the transmission direction is uplink, an uplink secondary carrier is added to the terminal; The message configuration process is executed according to the uplink secondary carrier to obtain the first rrcReconfiguration message associated with the uplink secondary carrier; Wherein, the first rrcReconfiguration message includes first uplink BWP information and second downlink BWP information; Wherein, the first uplink BWP information includes physical resource information used by the uplink secondary carrier; Wherein, the second downlink BWP information includes PDCCH-Config information but does not include PDSCH-Config information. The PDCCH-Config information is used to represent the information used for DCI blind detection, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data.

21. The access network device according to claim 18, characterized in that, When the query result indicates that a secondary carrier has been added to the terminal, the processor executes the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, specifically as follows: When the transmission direction is switched from downlink to uplink, the message configuration process is executed according to the uplink secondary carrier already added to the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by adding second uplink BWP information to the second rrcReconfiguration message and deleting the PDSCH-Config information in the third downlink BWP information in the second rrcReconfiguration message; Wherein, the second rrcReconfiguration message is an rrcReconfiguration message sent to the terminal before the target time; Wherein, the third downlink BWP information includes physical resource information used by the downlink secondary carrier already added to the terminal, and the PDSCH-Config information is used to represent the physical resource information used for downlink service data; the second uplink BWP information includes physical resource information used by the uplink secondary carrier.

22. The access network device according to claim 18, wherein When the query result indicates that a secondary carrier has been added to the terminal, the processor executes the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message, specifically as follows: When the transmission direction switches from downlink to uplink / downlink, perform the message configuration process based on the uplink secondary carrier already added for the terminal to obtain the first rrcReconfiguration message; Among them, the message content in the first rrcReconfiguration message is obtained by adding third uplink BWP information to the third rrcReconfiguration message; Among them, the third rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the third rrcReconfiguration message includes fourth downlink BWP information; Among them, the fourth downlink BWP information includes the physical resource information used by the downlink secondary carrier already added for the terminal, and the uplink BWP information includes the physical resource information used by the uplink secondary carrier.

23. The access network device according to claim 18, characterized in that When the query result indicates that a secondary carrier has been added for the terminal, the processor performs the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically: When the transmission direction switches from uplink to downlink, perform the message configuration process based on the downlink secondary carrier already added for the terminal to obtain the first rrcReconfiguration message; Among them, the message content in the first rrcReconfiguration message is obtained by adding fifth downlink BWP information to the fourth rrcReconfiguration message and deleting the fourth uplink BWP information in the fourth rrcReconfiguration message; Among them, the fourth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; Among them, the fourth uplink BWP information includes the physical resource information used by the uplink secondary carrier already added for the terminal, the fifth downlink BWP information includes the physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to represent the physical resource information used by downlink service data.

24. The access network device according to claim 18, wherein When the query result indicates that a secondary carrier has been added for the terminal, the processor performs the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically: When the transmission direction switches from uplink to uplink / downlink, perform the message configuration process based on the downlink secondary carrier already added for the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by adding sixth downlink BWP information to the fifth rrcReconfiguration message; Wherein, the fifth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the fifth rrcReconfiguration message includes fifth uplink BWP information; Wherein, the fifth uplink BWP information includes physical resource information used by the uplink secondary carrier added for the terminal, the sixth downlink BWP information includes physical resource information used by the downlink secondary carrier, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by downlink service data.

25. The access network device according to claim 18, characterized in that, When the query result indicates that a secondary carrier has been added for the terminal, the processor performs the message configuration process according to the query result and the transmission direction to obtain the first rrcReconfiguration message. Specifically: When the transmission direction is from uplink and downlink to downlink, the message configuration process is performed according to the uplink secondary carrier added for the terminal to obtain the first rrcReconfiguration message; Wherein, the message content in the first rrcReconfiguration message is obtained by deleting the sixth uplink BWP information from the sixth rrcReconfiguration message; Wherein, the sixth rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the sixth rrcReconfiguration message further includes seventh downlink BWP information; Wherein, the sixth uplink BWP information includes physical resource information used by the uplink secondary carrier, the seventh downlink BWP information includes physical resource information used by the downlink secondary carrier added for the terminal, and the physical resource information used by the downlink secondary carrier includes PDSCH-Config information, and the PDSCH-Config information is used to characterize the physical resource information used by downlink service data.

26. The access network device according to claim 18, wherein When the query result indicates that a secondary carrier has been added for the terminal, the processor configures the first rrcReconfiguration message according to the query result and the transmission direction. Specifically: When the transmission direction is from uplink and downlink to uplink, the message configuration process is performed according to the downlink secondary carrier added for the terminal to obtain the first rrcReconfiguration message; Among them, the message content in the first rrcReconfiguration message is obtained by deleting the PDSCH-Config information in the eighth downlink BWP information in the seventh rrcReconfiguration message; Among them, the seventh rrcReconfiguration message is the rrcReconfiguration message sent to the terminal before the target time; the seventh rrcReconfiguration message also includes seventh uplink BWP information; Among them, the seventh uplink BWP information includes physical resource information used for the uplink secondary carrier added for the terminal, the eighth downlink BWP information includes physical resource information used for the downlink secondary carrier, and the PDSCH-Config information is used to characterize the physical resource information used for downlink service data.

27. The access network device according to claim 17, wherein The indication message is a MAC-CE message on the user plane. The processor performs a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Specifically: In the case where the transmission direction is from downlink to uplink, or the transmission direction is from downlink / uplink to uplink, perform the message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; Generate the MAC-CE message according to the configured first byte and the configured second byte; Among them, the configured first byte in the MAC-CE message is used to indicate deactivating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

28. The access network device according to claim 17, wherein The indication message is a MAC-CE message on the user plane. The processor performs a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Specifically: In the case where the transmission direction is from downlink to downlink / uplink, or the transmission direction is from uplink to downlink / uplink, perform the message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; Generate the MAC-CE message according to the configured first byte and the configured second byte; Among them, the configured first byte in the MAC-CE message is used to indicate activating the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate activating the uplink secondary carrier.

29. The access network device according to claim 17, characterized in that, The indication message is a MAC-CE message on the user plane. The processor performs a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction. Specifically: In the case where the transmission direction is switched from uplink to downlink, or where the transmission direction is switched from uplink and downlink to downlink, perform the message configuration process to configure the first byte and the second byte; wherein, the first byte is used to activate or deactivate the downlink secondary carrier added for the terminal, and the second byte is used to activate or deactivate the uplink secondary carrier added for the terminal; Generate the MAC-CE message according to the configured first byte and the configured second byte; Wherein, the configured first byte in the MAC-CE message is used to indicate the activation of the downlink secondary carrier, and the configured second byte in the MAC-CE message is used to indicate the deactivation of the uplink secondary carrier.

30. The access network device according to any one of claims 27-29, characterized in that, The reserved bit in the configured first byte in the MAC-CE message is used to characterize whether the configured second byte exists in the MAC-CE message.

31. The access network device according to any one of claims 17-29, characterized in that, The processor executes to determine the transmission direction of the terminal's service data at the target moment, specifically: Obtain the first data volume of the uplink service data received by the terminal and the second data volume of the downlink service data sent by the terminal in multiple time periods before the target moment; Determine the transmission direction of the terminal in each of the time periods according to the first data volume and the second data volume in each of the time periods; Determine the transmission direction of the terminal at the target moment according to the transmission directions of the terminal in the multiple time periods.

32. A terminal, characterized in that, Comprises a memory, a transceiver, and a processor; The memory is used to store computer programs; the transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: Receive an indication message sent by the access network device, wherein the indication message is obtained by determining the transmission direction of the terminal's service data at the target moment and performing a message configuration process according to the transmission direction; Perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier according to the indication message.

33. A communication device, characterized in that, Applied to an access network device, it includes: A determination unit for determining the transmission direction of the terminal's service data at the target moment; An execution unit for performing a message configuration process according to the transmission direction to obtain an indication message matching the transmission direction; A sending unit for sending the indication message to the terminal; wherein, the indication message is used to instruct the terminal to perform DCI blind detection of the transmission direction on the PDCCH of the secondary carrier.

34. A communication device, characterized in that, Applied to a terminal, it includes: A receiving unit for receiving an indication message sent by the access network device, wherein the indication message is obtained by determining the transmission direction of the terminal's service data at the target moment and performing a message configuration process according to the transmission direction; A blind detection unit for performing DCI blind detection of the transmission direction on the PDCCH of the secondary carrier according to the indication message.

35. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the communication method according to any one of claims 1 to 15, or to execute the communication method according to claim 16.

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