CN115915109A

CN115915109A - Dual-connection communication method and device

Info

Publication number: CN115915109A
Application number: CN202111108186.9A
Authority: CN
Inventors: 何燃燃; 鲍炜; 杨晓东
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2023-04-04
Also published as: WO2023045851A1

Abstract

The embodiment of the application discloses a dual-connection communication method and device, and belongs to the technical field of communication. The dual-connection communication method in the embodiment of the application comprises the following steps: the terminal performs at least one of: preferentially sending a first message through a first path, wherein the first message comprises an uplink RRC message or uplink data; and activating or deactivating the PDCP copy according to a preset condition.

Description

Dual-connection communication method and device

Technical Field

The application belongs to the technical field of communication, and particularly relates to a dual-connection communication method and equipment.

Background

A Dual Connectivity (DC) provides resources of two network nodes (access network elements) for a terminal, where one of the network nodes is called a Master Node (MN), the other is called a Secondary Node (SN), the Master node controls a Master Cell Group (MCG), and the Secondary node controls a Secondary Cell Group (SCG).

In future, mobile communication may support dual connectivity of a Non-Terrestrial communication network (NTN), for example, a Terrestrial communication network (TN) -NTN dual connectivity, an NTN-NTN dual connectivity, etc., for the TN-NTN dual connectivity, since transmission through the NTN has a larger time delay compared to transmission through the TN, transmission requires higher transmit power, which may cause power consumption or data transmission delay of a terminal to increase, for the NTN-NTN dual connectivity, since different satellites may be in different satellite orbits, transmission delay through two nodes has a larger difference, which may also cause power consumption or data transmission delay of the terminal to increase, and therefore, it is necessary to redefine transmission behavior of the terminal under the dual connectivity.

Disclosure of Invention

The embodiment of the application provides a dual connectivity communication method and device, which can solve the problem that the power consumption or data transmission delay of a terminal is increased due to different transmission delays of dual connectivity and the like.

In a first aspect, a dual connectivity communication method is provided, including: the terminal performs at least one of: preferentially sending a first message through a first path, wherein the first message comprises an uplink RRC message or uplink data; and activating or deactivating the PDCP copy according to a preset condition.

In a second aspect, a dual connectivity communication method is provided, including: the network side equipment acquires a second message; the network side equipment sends target configuration information to a terminal according to the second message, wherein the target configuration information comprises at least one of the following information: the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path; the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message; second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message; third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data; fourth configuration information, the fourth configuration information being used for instructing the terminal to activate or deactivate PDCP replication; a first threshold value, which is used for the terminal to determine to send a first message through a first path or a second path; a second threshold value, the second threshold value being used for the terminal to determine whether to send the first message through the first path or the second path.

In a third aspect, a dual connectivity communication apparatus is provided, including: a sending module, configured to send a first message preferentially through a first path, where the first message includes an uplink RRC message or uplink data; and/or, a processing module, configured to activate or deactivate PDCP replication according to a preset condition.

In a fourth aspect, a dual connectivity communication device is provided, including: the acquisition module is used for acquiring a second message; a sending module, configured to send target configuration information to a terminal according to the second message, where the target configuration information includes at least one of the following: the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path; the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message; second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message; third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data; fourth configuration information, the fourth configuration information being used for instructing the terminal to activate or deactivate PDCP replication; a first threshold value, which is used for the terminal to determine whether to send a first message through a first path or a second path; a second threshold value, the second threshold value being used for the terminal to determine whether to send the first message through the first path or the second path.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the method according to the first aspect.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to preferentially send a first message through a first path, where the first message includes an uplink RRC message or uplink data; the processor is configured to activate or deactivate PDCP replication according to a preset condition.

In a seventh aspect, a network-side device is provided, which includes a processor, a memory, and a program or an instruction stored in the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the method according to the second aspect.

In an eighth aspect, a network-side device is provided, which includes a processor and a communication interface, where the processor is configured to obtain a second message, and the communication interface is configured to send target configuration information to a terminal according to the second message, where the target configuration information includes at least one of: the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path; the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message; second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message; third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data; fourth configuration information, the fourth configuration information being used for instructing the terminal to activate or deactivate PDCP replication; a first threshold value, which is used for the terminal to determine to send a first message through a first path or a second path; a second threshold value, the second threshold value being used for the terminal to determine whether to send the first message through the first path or the second path.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the method of the first aspect or the method of the second aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect.

In an eleventh aspect, there is provided a computer program/program product stored on a non-transitory storage medium, the program/program product being executable by at least one processor to implement a method as described in the first aspect, or to implement a method as described in the second aspect.

In the embodiment of the application, the terminal preferentially sends the first message through the first path and/or activates or deactivates the PDCP copy, which is beneficial to reducing the transmission delay of the message in the dual-connection communication and reducing the power consumption of the terminal.

Drawings

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

fig. 2 is a schematic flow chart diagram of a dual connectivity communication method according to an embodiment of the present application;

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

fig. 4 is a schematic structural diagram of a dual-connection communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a dual-connection communication device according to an embodiment of the present application;

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

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

fig. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" used herein generally refer to a class and do not limit the number of objects, for example, a first object can be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, and a character "/" generally means that the former and latter related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example, and, using NR terminology in much of the description below, the techniques may also be applied to applications other than NR system applications, such as generation 6 (6) systems ^th Generation, 6G) communication system.

Fig. 1 shows a schematic diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be referred to as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palm Computer, a netbook, a super Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (Wearable Device), a vehicle mounted Device (VUE), a pedestrian terminal (PUE), a smart home (a Device with wireless communication function, such as a refrigerator, a television, a washing machine, or furniture, etc.), and the Wearable Device includes: smart watch, smart bracelet, smart earphone, smart glasses, smart jewelry (smart bracelet, smart ring, smart necklace, smart anklet, etc.), smart wristband, smart garment, game console, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an enodeb, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a next generation node B (gNB), a home node B, a home enodeb, a WLAN access Point, a WiFi node, a Transmission Receiving Point (TRP), or some other suitable term in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

As mentioned above, future mobile communication may support dual connectivity of Non-Terrestrial communication Networks (NTN), for example, terrestrial communication Networks (TN) -NTN dual connectivity (abbreviated as TN-NTN DC), and NTN-NTN dual connectivity (abbreviated as NTN-NTN DC), which may have the following problems 1 to 3:

1. for an associated (associated) uplink RRC message of a Secondary Cell Group (SCG), according to a transmission mechanism in the related art, for an uplink Radio Resource Control (RRC) message associated with an MCG, for example, a measurement report (measurement report), terminal assistance information (ueasistanceinformation) and failure information (failurelnformation), the message is preferentially and directly transmitted to the MCG through a Signaling Radio Bearer (SRB) 1. For uplink RRC message related to SCG, if SRB3 is configured, it is preferentially transmitted to SCG directly through SRB3, otherwise, it is transmitted through SRB1.

For TN-NTN DC, transmission through NTN has a larger time delay than transmission through TN; for NTN-NTN DC, since different satellites may be in different satellite orbits, the transmission delays of the terminal and the SCG and MCG may be greatly different, which may result in higher transmission power required by the terminal to transmit the uplink RRC message, resulting in power consumption and transmission delay of the terminal.

2. For the case that the Split bearer is not configured with replication (Split Bearers w/o replication), in the related art, when the Split bearer is not configured with replication, whether to transmit on a primary leg (primary leg) or a secondary leg (secondary leg) is determined based on whether the data amount reaches a data splitting threshold (ul-DataSplitThreshold).

As above, for TN-NTN DC, the transmission through the NTN has a larger delay than the transmission through the TN, and for NTN-NTN DC, since different satellites may be in different satellite orbits, the transmission delays of the terminal and the SCG and MCG may be greatly different, which may result in a higher transmission power required by the terminal to transmit uplink data, resulting in power consumption and data transmission delay of the terminal.

3. For activation/deactivation of Split bearer replication (Split bearer replication), if Packet Data Convergence Protocol (PDCP) replication is activated, as above, for NTN-TN DC, due to large transmission delay of NTN, a PDCP Protocol Data Unit (PDU) transmitted through an NTN path may arrive too late at a PDCP entity of TN, and may fall outside a reordering window early, which may result in that a receiving end may not decode Data correctly. For NTN-NTN DC, since different satellites may be in different satellite orbits, the transmission delay of the terminal from the SCG and the MCG may be very different, which may cause data to arrive at a PDCP entity of a network side too late, resulting in that the receiving end cannot decode the data correctly.

In view of the above problems, embodiments of the present application provide a dual connectivity communication method to reduce data transmission delay as much as possible, reduce power consumption of a terminal, and improve a data decoding success rate.

The dual connectivity communication method and apparatus provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

As shown in fig. 2, the present embodiment provides a dual connectivity communication method 200, which may be performed by a terminal, in other words, by software or hardware installed in the terminal, and includes the following steps.

S202: the terminal performs at least one of: preferentially sending a first message through a first path, wherein the first message comprises an uplink Radio Resource Control (RRC) message or uplink data; packet Data Convergence Protocol (PDCP) replication (replication) is activated or deactivated according to a preset condition.

Various embodiments of the present application may be applicable to the following dual connectivity scenario: 1) In the TN-NTN DC, TN is used as a Master Node (MN), and NTN is used as a Secondary Node (SN); 2) In TN-NTN DC, NTN is used as MN, TN is used as SN; 3) In NTN-NTN DC, NTN is MN and NTN is SN.

The NTN to which various embodiments of the present application relate includes 1) a transparent forwarding based non-terrestrial network; 2) Non-terrestrial networks based on signal regeneration.

In this embodiment, the first path may be SRB1, and the terminal may be further configured with a second path, which may be SRB3; or the first path may be SRB3 and the second path SRB1; alternatively, the first path may be a primary RLC entity (primary RLC entity), and the second path may be a secondary RLC entity (secondary RLC entity); alternatively, the first path may be a secondary RLC entity and the second path may be a primary RLC entity.

In this embodiment, the terminal preferentially sends the first message through the first path, optionally, the transmission delay of the first path is smaller than that of the second path, and/or the sending power of the first path is smaller than that of the second path.

Before the embodiment, the terminal may report the auxiliary information, so that the network side device may instruct the terminal to send the first message through the first path or the second path based on the auxiliary information reported by the terminal.

In each embodiment of the application, a general implementation principle is that the first message is sent through the network node with smaller time delay as much as possible, the first message is prevented from being sent through the network node with larger time delay, and the transmission time delay of the first message is reduced; meanwhile, the small time delay generally means that the path is short, which is convenient for reducing the power consumption of the terminal.

For the preset condition mentioned in this embodiment, for example, before the embodiment, the terminal may report the auxiliary information, so that the network side device may indicate, based on the auxiliary information reported by the terminal, that the terminal is configured to activate or deactivate PDCP replication, that is, in this example, the terminal activates or deactivates PDCP replication based on the configuration of the network side device; or the network side equipment configures a preset condition for the terminal based on the auxiliary information reported by the terminal, and the terminal autonomously decides to activate or deactivate the PDCP copy based on the preset condition. In this example, the preset condition is configured by the network side device, and in other examples, the preset condition may also be predefined, for example, as agreed by a protocol.

For example, when the delay of the first path is smaller than the delay of the second path and the delay difference value reaches a preset value, the terminal deactivates the PDCP copy, and preferentially uses the first path to send the first message, thereby avoiding the problem of large delay caused by transmission using the second path.

For another example, when the delay of the first path is smaller than the delay of the second path and the delay difference value does not reach the preset value, the terminal activates PDCP copy, so that the first message can be sent by using the first path and the second path at the same time, the success rate of data decoding is increased, and the reliability of message transmission is improved.

According to the dual-connection communication method provided by the embodiment of the application, the terminal preferentially sends the first message through the first path and/or activates or deactivates the PDCP copy, so that the transmission delay of the message is reduced in dual-connection communication, and the power consumption of the terminal is reduced. For example, the terminal may preferentially transmit the first message on a path with a smaller transmission delay and a smaller transmission power, thereby reducing power consumption of the terminal and reducing data transmission delay; and the terminal can correctly configure activation or deactivation of the PDCP, thereby improving the success rate of data decoding of the receiving terminal.

Optionally, the preferentially sending the first message through the first path in the embodiment 200 may include at least one of the following 1) to 3).

1) The method includes preferentially sending a first message through a first path when the first message is associated with a Secondary Cell Group (SCG), where the first message includes an uplink RRC message.

Optionally, the terminal is configured with a second path, and the transmission delay of the first path is smaller than the transmission delay of the second path.

Optionally, the first path may include a transmission path between the terminal and an MCG, and the second path includes a transmission path between the terminal and an SCG.

Optionally, the first path may include SRB1 and the second path may include SRB3.

Optionally, the associating of the first message with the SCG may include at least one of: triggering the configuration information of the first message to be related to SCG; the first message is used for notifying the failure of the SCG RLC load bearing of the network side equipment.

It is understood that the various optional conditions listed above can be freely combined to form further embodiments, and are not listed here to avoid repetition.

2) The method includes that under the condition that a first message is associated with a Master Cell Group (MCG), the first message is preferentially sent through a first path, and the first message comprises an uplink RRC message.

Optionally, the first path includes a transmission path between the terminal and the SCG, and the second path includes a transmission path between the terminal and the MCG.

Optionally, the first path includes SRB3 and the second path includes SRB1.

Optionally, the associating of the first message with the MCG includes at least one of: triggering the configuration information of the first message to be related to the MCG; the first message is used for notifying the network side equipment MCG RLC bearing failure.

It is to be understood that the various optional conditions listed above may be freely combined to form further embodiments, and are not listed here to avoid repetition.

3) And preferentially sending the first message through a first path under the condition that the PDCP copy is deactivated or the radio bearer is a Dual Active Protocol Stack (DAPS) bearer, wherein the first message comprises uplink data.

The above 1) to 3) will be described in detail below in three examples.

In a first example, in the case that the first message is associated with the SCG, preferentially sending the first message through the first path includes at least one of the following a) to c).

a) In case that a first message is associated with an SCG, the first message is transmitted through a first path according to a predefined rule for defining a transmission path of the first message.

The predefined rule may be protocol appointment content, such as a protocol appointment to send a first message over a first path if the first message is associated with an SCG.

b) And under the condition that the first message is associated with the SCG, sending the first message through a first path according to first configuration information, wherein the first configuration information is used for indicating a transmission path of the first message associated with the SCG.

For example, the network side device may indicate, to the terminal, first configuration information based on measurement reporting of the terminal, where the first configuration information may be used to configure the terminal as: in the event that the first message is associated with an SCG, the first message is sent over a first path.

c) Under the conditions that a first message is associated with the SCG, a second path is configured, and a preset condition is not met, the first message is sent through the first path; in other embodiments, when a first message is associated with an SCG, a second path is configured, and the preset condition is satisfied, the terminal sends the first message through the second path. The specific contents of the preset conditions can be described in the following examples.

In a second example, where the first message is associated with an MCG, the prioritizing the sending of the first message over the first path includes at least one of a) through c) as follows.

a) In the case that the first message is associated with an MCG, the first message is sent over a first path according to predefined rules defining a transmission path for the first message.

The predefined rule may be protocol appointment content, such as a protocol appointment that a first message is sent over a first path if the first message is associated with an MCG.

b) And under the condition that the first message is associated with the MCG, sending the first message through a first path according to second configuration information, wherein the second configuration information is used for indicating a transmission path of the first message associated with the MCG.

For example, the network side device may indicate, to the terminal, second configuration information based on the measurement report of the terminal, where the second configuration information may be used to configure the terminal as: the first message is sent over a first path in the event that the first message is associated with an MCG.

c) Under the conditions that a first message is associated with the MCG, the first path is configured, and preset conditions are not met, the first message is sent through the first path; in other embodiments, the terminal sends the first message through the second path when the first message is associated with an MCG, configured with the first path, and satisfies a preset condition. The specific contents of the preset conditions can be described in the following examples.

In a third example, in the case that the PDCP copy deactivation or the radio bearer is a DAPS bearer, the first message is preferentially sent through the first path, including at least one of the following a) to d).

a) Transmitting the first message through a first path according to a predefined rule for defining a transmission path of the first message in case of PDCP copy deactivation or a radio bearer is a DAPS bearer.

The predefined rule may be a content of a protocol convention, such as a protocol convention to send the first message over the first path in case of PDCP copy deactivation or radio bearer being a DAPS bearer.

b) And sending the first message through a first path according to third configuration information under the condition that the PDCP copy is deactivated or the radio bearer is a DAPS bearer, wherein the third configuration information is used for indicating a transmission path of the first message.

For example, the network side device may indicate, to the terminal, third configuration information based on the measurement report of the terminal, where the third configuration information may be used to configure the terminal as: transmitting the first message through a first path in case of PDCP copy deactivation or a radio bearer is a DAPS bearer.

c) In a first case, sending the first message through the first path or a second path; in a second case, sending the first message over a first path; wherein the first condition comprises: the PDCP duplication deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to a first threshold value, and a preset condition is met; the second condition is a condition other than the first condition. The specific contents of the preset conditions can be described in the following examples.

This embodiment includes two ways, one: for the mode that the second path is the secondary RLC entity, the first case includes: the PDCP copy deactivation or radio bearer is a DAPS bearer, is configured with a second path, has the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path larger than or equal to a first threshold value, and meets a preset condition; in a second manner, for the manner that the second path is the primary RLC entity, the first case includes: the PDCP copy deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to a first threshold, and a preset condition is met.

d) In a third case, preferentially sending the first message over the first path; in a fourth case, sending the first message over the first path; wherein the third condition comprises: the PDCP copy deactivation or the radio bearer is a DAPS bearer, and the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is more than or equal to a second threshold value; the fourth case is a case other than the third case. The second threshold may be the same as or different from the first threshold. .

The foregoing d) wherein the prioritizing the sending of the first message over the first path comprises: and sending the first message through the second path under the condition that the data volume sent by the first path reaches the maximum value, namely sending the first message through the second path when the data volume sent by the first path reaches the maximum value.

Optionally, in the examples of a) to d), when the transmission delay between the terminal and the MCG is smaller than the transmission delay between the terminal and the SCG, the first path is a transmission path between the terminal and the MCG, and the second path is a transmission path between the terminal and the SCG.

For example, in a case that the transmission delay between the terminal and the MCG is smaller than the transmission delay between the terminal and the SCG, the first path is a primary RLC entity, and the second path is a secondary RLC entity.

Optionally, in the examples of a) to d), when the transmission delay between the terminal and the MCG is greater than the transmission delay between the terminal and the SCG, the first path is a transmission path between the terminal and the SCG, and the second path is a transmission path between the terminal and the MCG.

For example, in a case that the transmission delay between the terminal and the MCG is greater than the transmission delay SCG between the terminal and the MCG, the first path is the secondary RLC entity, and the second path is the primary RLC entity.

Optionally, in the foregoing embodiments, the terminal activates or deactivates the PDCP replication according to a preset condition, which may include at least one of the following 1) and 2).

1) Activating or deactivating PDCP copying according to the fourth configuration information; wherein the fourth configuration information is used for instructing the terminal to activate or deactivate PDCP duplication.

2) And activating the PDCP copy under the condition that the preset condition is met, and deactivating the PDCP copy under the condition that the preset condition is not met.

Alternatively, the preset condition mentioned in the foregoing embodiments may include at least one of the following.

1) And the transmission delay between the terminal and the first network equipment is less than or equal to a third threshold value.

2) And the difference between the transmission delay of the terminal and the first network equipment and the transmission delay of the second network equipment is less than or equal to a fourth threshold value.

3) And the distance between the terminal and the first network equipment is less than or equal to a fifth threshold value.

4) The time for which the measurement of the first cell group is less than or equal to the sixth threshold exceeds the seventh threshold.

5) The measurement of the first cell group is less than or equal to an eighth threshold.

6) The measurement of the first cell group is less than or equal to a ninth threshold for the first time.

Optionally, the preset condition mentioned in the foregoing embodiments may further include at least one of the following:

1) The measurement of the first cell group is below a tenth threshold.

2) The second cell set has better measurements than the first cell set than the first offset value.

3) The measurement of the second cell group is better than the eleventh threshold.

4) The measurement of the first cell group is below a twelfth threshold and the measurement of the second cell group is above a thirteenth threshold.

In each of the above examples relating to the preset condition, the transmission delay of the transmission path associated with the first cell group is smaller than the transmission delay of the transmission path associated with the second cell group.

For TN-NTN DC, the first cell group may be the cell group in which the TN resides, such as the MCG, which is a series of cells associated with the master node; alternatively, the first cell group may be the cell group in which the TN is located, such as the SCG, which is a series of cells associated with the secondary node.

For the NTN-NTN DC, the first cell group may be a cell group in which an access network element with a smaller time delay is located, such as an MCG, which is a series of cells associated with a master node; or, the first cell group may be a cell group where an access network element with a smaller delay is located, such as an SCG, where the SCG is a series of cells associated with the secondary node.

For TN-NTN DC, the first network equipment is NTN; for NTN-NTN DC, the first network device is NTN.

For TN-NTN DC, the second network equipment is TN; for NTN-NTN DC, the second network device is NTN.

Optionally, the method provided in the foregoing embodiments may further include the following steps: the terminal sends a second message, wherein the second message comprises at least one of the following: location information of the terminal; the transmission delay between the terminal and the first network equipment; the transmission delay between the terminal and the second network equipment; a distance between the terminal and a third network device; and the transmission delay between the terminal and the third network equipment.

The second message may be used for the network side device to issue the target configuration information.

Optionally, the method provided in the foregoing embodiment may further include the following steps: the terminal acquires target configuration information, wherein the target configuration information comprises at least one of the following 1) to 7).

1) And the preset condition is used for the terminal to determine that the first message is sent through the first path or the second path.

2) The first configuration information is used for instructing the terminal to send the first message associated with the SCG through the first path or the second path, and the first message is an uplink RRC message.

3) And second configuration information, where the second configuration information is used to instruct the terminal to send the first message associated with the MCG through the first path or the second path, and the first message is an uplink RRC message.

4) And third configuration information, where the third configuration information is used to instruct the terminal to send the first message through the first path or the second path, and the first message is uplink data.

5) Fourth configuration information, the fourth configuration information being used to instruct the terminal to activate or deactivate PDCP replication.

6) A first threshold value, the first threshold value being used for the terminal to determine to send the first message through the first path or the second path.

7) A second threshold, where the second threshold is used for the terminal to determine to send the first message through the first path or the second path.

Reference may be made to the preceding description of various embodiments regarding the role of various information in the target configuration information.

In order to describe the dual connectivity communication method provided in the embodiments of the present application in detail, the following description will be made with reference to several specific embodiments.

In a TN-TN DC architecture in the related art, distances from a terminal to an MCG and from a terminal to an SCG are similar, so in a current wireless communication system protocol, it is mostly assumed that there is no obvious difference in transmission delay and channel quality between the terminal and the MCG and between the terminal and the SCG, and therefore, in the related mechanism for selecting the transmission path, no sufficient consideration is given to delay and channel quality difference of different transmission paths and transmission power of the terminal. For TN-NTN and NTN-NTN DC scenarios, due to the great difference between the delay and the channel quality of the MCG and SCG transmission paths, it is obvious that there is a technical problem in the prior art of direct multiplexing.

Example one

In this embodiment, the first message is an uplink RRC message transmission, the TN is the MN, and the NTN is the SN. This embodiment is also applicable to NTN-NTN DC, where the transmission delay of the MCG is smaller than that of the SCG, specifically, for example, the MCG is a Low Earth Orbit (LEO) satellite, and the SCG is a Geostationary orbit (GEO) satellite.

In this embodiment, the terminal preferentially transmits the first message through the first path.

In this embodiment, the first path is SRB1, the second path is SRB3, and the first message may be an uplink RRC message, such as MeasurementReport, UEAssistanceInformation, and FailureInformation.

This embodiment, for example, prioritizes sending over the first path for a first message associated with the SCG.

The preferentially sending the first message associated with the SCG through the first path comprises at least one of the following steps:

1) For a first message associated with the SCG, sending over the first path is protocol agreed.

For example, for the uplink RRC message associated with the SCG, the uplink RRC message is sent to the MCG through the SRB1Container (Container) (regardless of whether the SRB3 is configured), and more specifically, the uplink RRC message is embedded into an uplink information transport multiple access technology dual connectivity (ULInformationTransferMRDC) message through the SRB1.

For uplink RRC messages associated with the MCG, the RRC messages are sent to the MCG through SRB1Container, and more specifically, the RRC messages are submitted to a lower layer (lower layer) through SRB1 for transmission.

The behavior may be a protocol agreement. For example, if the protocol specifies that for a first message associated with an SCG, it is to be sent preferentially over the first path, then it is always to be sent preferentially over the first path. For example, if the protocol specifies that the uplink RRC message associated with the SCG is sent to the MCG through the SRB1Container (regardless of whether SRB3 is configured or not), the uplink RRC message associated with the SCG is always sent to the MCG through the SRB1Container (regardless of whether SRB3 is configured or not).

If the protocol provides that the first message associated with the MCG is preferentially sent through the first path, the first message is always preferentially sent through the first path. Specifically, for example, if the protocol provides that the uplink RRC message associated with the MCG is sent to the MCG through SRB1Container, the uplink RRC message associated with the MCG is always sent to the MCG through SRB1 Container.

2) And for a first message associated with the SCG, sending the first message through the first path based on first configuration information, wherein the first configuration information is used for instructing the terminal to send the first message through the first path or the second path.

The above behavior may be configured by the network side, for example, if configured by the network side, the network side may configure to preferentially transmit through the first path or transmit through the second path for the first message associated with the SCG. Specifically, for example, for the uplink RRC message associated with the SCG, the network may configure "send to MCG using SRB1 Container" or "send to SCG using SRB3 preferentially".

If the network side configures the uplink RRC message associated with the SCG and sends the uplink RRC message to the MCG by using SRB1Container, the terminal sends the uplink RRC message to the MCG by using SRB1Container, if the network side configures SRB3, and configures the uplink RRC message to be sent to the SCG by using SRB3, the terminal sends the uplink RRC message to the SCG by using SRB3. Specifically, the network may use 1 bit to indicate whether the uplink RRC message associated with the SCG is sent to the MCG using SRB1Container or sent to the MCG using SRB1Container, specifically, if the bit takes a value of 1, it indicates that the uplink RRC message associated with the SCG is sent to the MCG using SRB1Container, and if the bit takes a value of 0, it indicates that the uplink RRC message associated with the SCG is sent to the SCG using SRB3Container, and vice versa. Or, the domain may exist, which indicates that the uplink RRC message associated with the SCG is sent to the MCG using SRB1Container, and the domain does not exist, which indicates that the uplink RRC message associated with the SCG is sent to the SCG using SRB3Container if SRB3 is configured, and vice versa. Or, the value of the domain may be true (true), for the uplink RRC message associated with the SCG, SRB1Container is used to send the message to the MCG, and the value of the domain is false (false), which indicates that SRB3 is used to send the message to the SCG if SRB3 is configured, or vice versa.

3) For a first message associated with the SCG, if a second path is configured, if a first condition and/or a second condition is met, sending the first message through the second path; otherwise, sending through the first path. That is, for the first message associated with the SCG, if the second path is configured, if the first condition and/or the second condition is not satisfied, the first message is sent through the first path.

The first condition and/or the second condition correspond to the preset conditions in the previous embodiments.

For example, if the first condition and/or the second condition are satisfied, for uplink RRC messages of the SCG under the first condition and/or the second condition, if SRB3 is configured, the uplink RRC messages are transmitted through SRB3, and more specifically, the uplink RRC messages are delivered to a lower layer (lower layer) through SRB3 for transmission.

The preset condition can be agreed by a protocol or configured by a network side. The behavior can be configured by protocol agreement or a network side, and if the protocol agreement is met, the behavior is always executed; if configured by the network side, the network may instruct the UE to perform the above-described actions using a 1-bit field, for example, as described above. Or the network side configures the preset condition, and the terminal executes the behavior.

Optionally, the first condition may include at least one of:

For example, the transmission delay with the NTN may include a Timing Advance (TA) pre-compensated by the terminal and/or a TA indicated by the network, or may include a transmission delay of the serving link and/or the feedback link.

2) And the difference between the transmission delay of the terminal and the first network equipment and the transmission delay of the terminal and the second network equipment is less than or equal to a fourth threshold value.

For example, the first network device is an NTN, the second network device is a TN, and a difference between a transmission delay of the terminal and the NTN and a transmission delay of the TN is less than or equal to a fourth threshold; for another example, the first network device is an NTN, the second network device is an NTN, and a difference between a transmission delay of the terminal and the first NTN and a transmission delay of the terminal and the second NTN is less than or equal to a fourth threshold

For example, the first network device is an NTN, and the distance between the terminal and the first network device is the distance between the terminal and the satellite.

4) The time for which the measurement of the first cell group (cell group) is less than or equal to the sixth threshold exceeds the seventh threshold.

For example, the time for which the measure of MCG is less than or equal to the sixth threshold exceeds the seventh threshold; for example, the seventh threshold may be represented by a timer, and the length of the timer is a value of the seventh threshold. Specifically, for example, the timer is started when the measurement of the MCG is less than or equal to the sixth threshold, the timer is stopped when the measurement of the MCG is greater than the sixth threshold, and if the timer expires, it indicates that the time when the measurement of the MCG is less than or equal to the sixth threshold exceeds the seventh threshold. For another example, the timer is started when the measurement of the MCG is less than the sixth threshold, the timer is stopped when the measurement of the MCG is greater than or equal to the sixth threshold, and if the timer expires, it indicates that the time that the measurement of the MCG is less than or equal to the sixth threshold exceeds the seventh threshold.

For example, the measure of MCG is less than or equal to the eighth threshold.

Optionally, the second condition comprises at least one of:

1) The measurement of the first cell group is below a tenth threshold.

For example, the measure of MCG is below the tenth threshold.

For example, the measurement of SCG is better than the measurement of MCG than the first offset value.

For example, the measurement of SCG is better than the eleventh threshold.

For example, the measure of MCG is below a twelfth threshold and the measure of SCG is better than a thirteenth threshold.

It should be noted that the above listed thresholds may be different respectively, or two or more of them may be the same.

The measurement includes a measurement result of one or more beams (beams) of a cell configured on the network side, and the measurement may include any one of the following: reference Signal Received Power (RSRP) only; reference Signal Reception Quality (RSRQ) only; signal to Interference plus Noise Ratio (SINR), RSRP and RSRQ only; RSRP and SINR; RSRQ and SINR; RSRP; RSRQ and SINR; received Signal Code Power (RSCP) only; only the Ratio of the energy of each received signal to the noise power spectrum (Ratio of received energy from the pilot signal CPICH per chip to noise power spectral density, ecN 0); RSCP and EcN.

Optionally, this embodiment may further include the steps of: the terminal sends a measurement report or auxiliary information to the network side, wherein the measurement report or auxiliary information corresponds to the second information in other embodiments, and the measurement report or auxiliary information comprises at least one of the following:

1) Location information of the terminal.

For example, the location information includes coarse location information and/or precise location information of the terminal, and the location information may also be cell ID (cell identifier), TAC (tracking area code), TAI (tracking area identifier), RA (registration area), and the like.

2) And the transmission delay of the terminal and the first network equipment.

For example, the transmission delay between the terminal and the NTN, or the transmission delay between the terminal and the node with larger delay, or the transmission delay between the terminal and the node farther from the ground is used in this example. The transmission delay with the NTN may include a TA pre-compensated by the terminal and a TA indicated by the network, or may include a transmission delay of the serving link and/or the feedback link.

3) And the transmission delay of the terminal and the second network equipment.

For example, the transmission delay between the terminal and the TN in this example is the transmission delay between the terminal and the node with larger delay or the transmission delay between the terminal and the node closer to the ground.

4) The distance of the terminal from the third network device.

For example, if the third network device is an NTN, the third network device is a deployment mode based on regeneration, that is, the gNB is on a satellite, and the distance is the distance between the terminal and the satellite; in the case of the transparent transponding type, the distance may be the distance between the terminal and the satellite, or the distance between the terminal and the satellite plus the distance between the satellite and the ground base station.

5) And the transmission delay of the terminal and the third network equipment.

Optionally, this embodiment may further include the steps of: the terminal acquires target configuration information, wherein the configuration information comprises at least one of the following information:

1) A first condition.

2) And a second condition.

3) The first configuration information is used for instructing the terminal to send the first message associated with the SCG through the first path or the second path, and the first message is an uplink RRC message.

4) And second configuration information, where the second configuration information is used to instruct the terminal to send the first message associated with the MCG through the first path or the second path, and the first message is an uplink RRC message.

5) And third configuration information, where the third configuration information is used to instruct the terminal to send the first message through the first path or the second path, and the first message is uplink data.

6) Fourth configuration information, the fourth configuration information being used to instruct the terminal to activate or deactivate PDCP duplication.

7) A first threshold, which is used for the terminal to determine to send the first message through the first path or the second path.

8) A second threshold, where the second threshold is used for the terminal to determine to send the first message through the first path or the second path.

Example two

In this embodiment, the uplink RRC message is transmitted, the NTN is used as the MN, and the TN is used as the SN. This embodiment is also applicable to NTN-NTN DC, where the transmission delay of MCG is greater than the transmission delay of SCG, specifically, for example, MCG is GEO and SCG is LEO.

Some examples in this embodiment are similar to the embodiment and will not be described herein.

In this embodiment, the terminal sends the first message over the first path.

In this embodiment, the first path is SRB3, the second path is SRB1, and the first message is an uplink RRC message, such as MeasurementReport, UEAssistanceInformation, and FailureInformation.

This embodiment, for example, prioritizes sending over the first path for a first message associated with the MCG.

The preferentially sending the first message associated with the MCG through the first path comprises at least one of the following steps:

1) And for the first message associated with the MCG, if the first path is configured, sending the first message through the first path.

For example, for the uplink RRC message associated with the MCG, if SRB3 is configured, the uplink RRC message is sent to the SCG through SRB3 Container. More specifically, these RRC messages are delivered to the lower layer for transmission through SRB3 or the uplink RRC message is embedded in a certain RRC message through SRB3.

For uplink RRC messages associated with the SCG, if SRB3 is configured, the uplink RRC messages are sent to the SCG through SRB3Container, that is, the RRC messages are delivered to the lower layer through SRB3 for transmission.

The behavior may be protocol conventions, and the exemplary principle is the same as the first embodiment.

2) And transmitting a first message associated with the MCG through the first path or the second path based on the second configuration information.

The above behavior is a network side configuration, which is the same as the first embodiment.

3) For a first message associated with the MCG, if a first condition and/or a second condition is met, sending the first message through a second path; otherwise, sending through the first path.

For example, if the first condition and/or the second condition is satisfied, for an uplink RRC message associated with the MCG, transmitting the uplink RRC message through the SRB1; otherwise, that is, for the uplink RRC message associated with the MCG, if the SRB3 is configured, if the first condition and/or the second condition is not satisfied, the uplink RRC message is transmitted through the SRB3, and more specifically, the uplink RRC message is delivered to the lower layer through the SRB3 for transmission or embedded into a certain RRC message through the SRB3.

Optionally, the first condition may include at least one of:

4) The time for which the measurement of the first cell group (cell group) is less than or equal to the sixth threshold exceeds the seventh threshold;

The design rule of the second condition may be that the cell group in which the TN (SCG) is located is sufficiently bad, e.g., the delay is large.

Optionally, the second condition comprises at least one of:

1) The measurement of the first cell group is below a tenth threshold.

For example, the measurement of SCG is below the tenth threshold.

For example, the measurement of MCG is better than the measurement of SCG than the first offset value.

For example, the measure of MCG is better than the eleventh threshold.

For example, the measurement of SCG is below the twelfth threshold, and the measurement of MCG is better than the thirteenth threshold.

The measurement includes measurement results of one or more beams (beams) of a cell configured on the network side, and the measurement may include: reference Signal Received Power (RSRP) only; reference Signal Reception Quality (RSRQ) only; signal to Interference plus Noise Ratio (SINR), RSRP and RSRQ only; RSRP and SINR; RSRQ and SINR; RSRP; RSRQ and SINR; received Signal Code Power (RSCP) only; ecN0 only; RSCP and EcN.

1) Location information of the terminal.

2) And the transmission delay of the terminal and the first network equipment.

3) And the transmission delay of the terminal and the second network equipment.

4) The distance of the terminal from the third network device.

1) A first condition.

2) And a second condition.

7) A first threshold value, the first threshold value being used for the terminal to determine to send the first message through the first path or the second path.

EXAMPLE III

This embodiment mainly introduces the case where Split Bearers have no configured replication (Split beacons w/o replication), with TN as MN and NTN as SN. This embodiment is also applicable to NTN-NTN DC, where the transmission delay of MCG is smaller than the transmission delay of SCG, specifically, for example, MCG is LEO and SCG is GEO.

In this embodiment, the terminal sends the first message over the first path.

In this embodiment, the first path is a primary RLC entity, and the second path is a secondary RLC entity; or, the first path is a secondary RLC entity, and the second path is a primary RLC entity. The first message is uplink data.

This embodiment, for example, if PDCP copy deactivation or the radio bearer is a DAPS bearer, the terminal preferentially transmits the first message through the first path.

If the PDCP duplication deactivation or the radio bearer is a DAPS bearer, preferentially sending a first message through a first path, wherein the first message comprises at least one of the following:

1) If the PDCP copy is deactivated or the radio bearer is a DAPS bearer, a first message is transmitted through a first path. The behavior may be a protocol convention, as exemplified in example one.

2) And if the PDCP copy is deactivated or the radio bearer is a DAPS bearer, sending the first message through a first path according to third configuration information, wherein the third configuration information is used for indicating a transmission path of the first message. This behavior may be configured by the network side, as in the first embodiment.

3) If the PDCP copy is deactivated or the radio bearer is a DAPS bearer, and the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path are equal to or larger than a first threshold value, if a first condition and/or a second condition are met, transmitting through the first path or the second path; otherwise, sending through the first path.

For example, if PDCP duplication is deactivated or the radio bearer is a DAPS bearer, if a split secondary RLC entry is configured and a total data amount of PDCP and primary and split secondary RLC entries wait for an initial transfer of RLC data amount equal to or greater than ul-DataSplitThreshold, if a first condition and/or a second condition is satisfied, a PDCP PDU is delivered to the primary RLC entry or the split secondary RLC entry.

Otherwise, the PDCP PDUs are delivered to the primary RLC entity. Specifically, if the PDCP duty is deactivated, and if the split secondary RLC entry is configured, and the total data amount of the PDCP and the primary and split secondary RLC entries wait for the initial RLC data amount to be less than the first threshold, or the first and/or second conditions are not satisfied, the PDCP PDU is delivered to the primary RLC entry.

3) If the PDCP duplication is deactivated or the radio bearer is a DAPS bearer and the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path are greater than or equal to a second threshold value, preferentially transmitting the data through the first path; otherwise, sending through the first path.

For example, if the PDCP duty is deactivated or the radio bearer is a DAPS bearer, if the split secondary RLC entry is configured and the total data amount of the PDCP and the primary and split secondary RLC entries wait for the initially transmitted RLC data amount to be equal to or greater than the second threshold, the PDCP PDU is preferentially delivered to the secondary RLC entry; otherwise, the PDCP PDUs are delivered to Primary RLC entity.

The first threshold and the second threshold may be the same or different.

The preferentially sending over the first path comprises: and when the data volume sent by the first path reaches the maximum, sending the data through the second path.

For example, when the amount of data delivered to the secondary RLC entry for PDCP PDU reaches a maximum, the remaining data is delivered to the Primary RLC entry.

The preset condition can be agreed by a protocol or configured by a network side. The behavior can be configured by protocol agreement or network side, if protocol agreement, the behavior is executed all the time; if configured by the network side, the network may instruct the UE to perform the above-mentioned actions using a 1-bit field, which is the same as the above specific example. Or the network side configures the preset condition, and the terminal executes the behavior.

The network side can also configure the first threshold or the second threshold as infinity based on the measurement report of the terminal, and if the network side configures the first threshold or the second threshold as infinity, the terminal always delivers the PDCP PDU to the primary RLC entry.

The rest of the description is the same as that of embodiment one, and will not be repeated

Example four

Split bearings w/o duty, NTN as MN, TN as SN. This embodiment is also applicable to NTN-NTN DC, where the transmission delay of MCG is greater than the transmission delay of SCG, specifically, for example, MCG is GEO and SCG is LEO.

All the examples in this embodiment are similar to the second embodiment and are not repeated.

In this embodiment, the terminal sends the first message over the first path.

This embodiment prioritizes sending the first message over the first path, for example, if PDCP copy deactivation or the radio bearer is a DAPS bearer.

1) If the PDCP copy is deactivated or the radio bearer is a DAPS bearer, a first message is transmitted through a first path. The behavior is a protocol convention, and the specific example is similar to the second embodiment.

2) And if the PDCP copy deactivation or the radio bearer is a DAPS bearer, sending the first message through a first path based on third configuration information, wherein the third configuration information is used for indicating a transmission path of the first message. This behavior is configured on the network side, as shown in example two.

For example, the network side may also configure the first threshold as infinity based on a measurement report of the terminal, and if the network side configures the threshold as infinity, the terminal always delivers the PDCP PDU to the primary RLC entity.

For example, the network side may configure and modify the path corresponding to the MCG to be secondary leg, and the path corresponding to the SCG to be primary leg. After receiving the configuration, the terminal judges to send second information through the first path or the second path according to the existing mechanism, namely if the PDCP duplicate is deactivated, and if the split secondary RLC entity is configured and the total data volume of the PDCP, the primary RLC entity and the split secondary RLC entity wait for the primarily transmitted RLC data volume to be equal to or larger than a first threshold value, the PDCP PDU is delivered to the primary RLC entity or the secondary RLC entity; otherwise, delivering the PDCP PDU to primary RLC entity

3) If the PDCP duplicate is deactivated or the radio bearer is a DAPS bearer, and the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path are equal to or larger than a first threshold value, if a first condition and/or a second condition is met, transmitting through the first path or the second path; otherwise, sending through the first path.

For example, if the PDCP duty is deactivated or the radio bearer is a DAPS bearer, if the split secondary RLC entry is configured and the total data amount of the PDCP and the primary and split secondary RLC entries wait for the initial RLC data amount to be equal to or greater than the first threshold, the PDCP PDU is delivered to the primary RLC entry or the split secondary RLC entry if the first condition and/or the second condition is satisfied.

Otherwise, the PDCP PDUs are delivered to primary RLC entity. Specifically, if the PDCP duty is deactivated, and if the split secondary RLC entry is configured, and the total data amount of the PDCP and the primary and split secondary RLC entries wait for the initial RLC data amount to be less than the first threshold, or the first and/or second conditions are not satisfied, the PDCP PDU is delivered to the secondary RLC entry.

4) If the PDCP duplicate is deactivated or the radio bearer is a DAPS bearer, and the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path are greater than or equal to a second threshold value, preferentially sending the data through the first path; otherwise, sending through the first path.

For example, when the amount of data delivered to the secondary RLC entry for PDCP PDUs reaches a maximum, the remaining data is delivered to the Primary RLC entry.

The first and second thresholds may be the same or different.

The preset condition can be agreed by a protocol or configured by a network side. The behavior can be configured by protocol agreement or network side, if protocol agreement, the behavior is executed all the time; if configured by the network side, the network may instruct the UE to perform the above-described actions using a 1-bit field, for example, as described above. Or the network side configures the preset condition, and the terminal executes the behavior.

The network side may configure the first threshold or the second threshold as infinity based on the measurement report of the terminal, and if the network side configures the first threshold or the second threshold as infinity, the terminal always delivers the PDCP PDU to the primary RLC entry.

The rest of the process is the same as the second embodiment, and the description is omitted here.

EXAMPLE five

This embodiment mainly introduces activation/deactivation of the split bearer PDCP replication, where TN is MN and NTN is SN, or NTN is MN and TN is SN. This embodiment is also applicable to NTN-NTN DCs.

In this embodiment, the terminal activates or deactivates PDCP replication (replication).

The activating or deactivating PDCP duplication includes at least one of:

1) Activating or deactivating the PDCP duplicate based on the fourth configuration information.

Activating or deactivating the PDCP duplication based on the fourth configuration information comprises that if the network side configures and activates the PDCP duplication, the terminal activates the PDCP duplication, and if the network side configures and deactivates the PDCP duplication, the network side deactivates the PDCP duplication. For example, the network indicates the terminal to activate or deactivate the PDCP duty using a 1-bit field, which exists and indicates that the PDCP duty is configured, and if the field is set to true, indicates that the PDCP duty is activated. Indicating that the identification activates the PDCP duplicate, or indicating that the domain takes a value of 0 to activate the PDCP duplicate.

2) And if the first condition and/or the second condition are met, activating the PDCP duplicate, otherwise, deactivating the PDCP duplicate.

The preset condition can be agreed by a protocol or configured by a network side. The behavior can be configured by protocol agreement or network side, and if the protocol agreement is met, the behavior is always executed. If configured by the network side, the network may instruct the UE to perform the above-described actions using a 1-bit field, for example, as described above. Or the network side configures the preset condition, and the terminal executes the behavior.

The activation/deactivation of the PDCP duplicate may be activation/deactivation of a PDCP duplicate of an MCG split bearer and/or a PDCP duplicate of an SCG split bearer.

The first condition includes at least one of:

For example, for TN-NTN, the first network device is NTN, and a transmission delay between the terminal and the NTN is less than or equal to a third threshold, for example, the transmission delay between the terminal and the NTN may include a TA pre-compensated by the terminal and a TA indicated by the network, or may include a transmission delay of a serving link and/or a feedback link; for another example, for NTN-NTN, the first network device may be a first NTN and/or a second NTN

The second condition includes at least one of:

1) The measurement of the first cell group is below a tenth threshold.

1) Location information of the terminal.

2) And the transmission delay of the terminal and the first network equipment.

3) And the transmission delay of the terminal and the second network equipment.

4) The distance of the terminal from the third network device.

1) A first condition.

2) And a second condition.

6) Fourth configuration information, the fourth configuration information being used to instruct the terminal to activate or deactivate PDCP replication.

The dual-connection communication method according to the embodiment of the present application is described in detail above with reference to fig. 2. A dual-connection communication method according to another embodiment of the present application will be described in detail below with reference to fig. 3. It is to be understood that the interaction between the network-side device and the terminal described from the network-side device is the same as that described at the terminal side in the method shown in fig. 2, and the related description is appropriately omitted to avoid redundancy.

Fig. 3 is a schematic flow chart of an implementation process of a dual connectivity communication method according to an embodiment of the present application, which may be applied to a network side device. As shown in fig. 3, the method 300 includes the following steps.

S302: and the network side equipment acquires the second message.

S304: and the network side equipment sends target configuration information to a terminal according to the second message.

The target configuration information includes at least one of: the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path; the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message; second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message; third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data; fourth configuration information, the fourth configuration information being used for instructing the terminal to activate or deactivate PDCP replication; a first threshold value, which is used for the terminal to determine whether to send a first message through a first path or a second path; a second threshold value, the second threshold value being used for the terminal to determine whether to send the first message through the first path or the second path.

In the dual connectivity communication method provided in the embodiment of the present application, the network device sends the target configuration information to the terminal according to the second message, where the configuration information may instruct the terminal to send the first message through the first path or the second path, or instruct the terminal to activate or deactivate PDCP replication, which is beneficial to reducing transmission delay of messages in dual connectivity communication and reducing power consumption of the terminal.

It should be noted that, in the dual connectivity communication method provided in the embodiment of the present application, the execution main body may be a dual connectivity communication device, or a control module in the dual connectivity communication device for executing the dual connectivity communication method. In the embodiment of the present application, a method for a dual connectivity communication apparatus to perform dual connectivity communication is taken as an example, and the dual connectivity communication apparatus provided in the embodiment of the present application is described.

Fig. 4 is a schematic structural diagram of a dual-connection communication apparatus according to an embodiment of the present application, which may correspond to a terminal in another embodiment. As shown in fig. 4, the apparatus 400 includes a transmitting module and/or a processing module.

The sending module 402 may be configured to preferentially send a first message through a first path, where the first message includes an uplink RRC message or uplink data.

The processing module 404 may be configured to activate or deactivate PDCP replication according to a preset condition.

The dual-connection communication device provided by the embodiment of the application preferentially sends the first message through the first path and/or activates or deactivates the PDCP copy, thereby being beneficial to reducing the transmission delay of the message in dual-connection communication and reducing the power consumption of the terminal.

Optionally, as an embodiment, the sending module 402 is configured to send the request to at least one of the following 1) to 3).

1) And preferentially sending the first message through a first path under the condition that the first message is associated with the SCG, wherein the first message comprises an uplink RRC message.

2) And preferentially sending the first message through a first path under the condition that the first message is associated with the MCG, wherein the first message comprises an uplink RRC message.

3) And preferentially sending the first message through a first path under the condition that the PDCP copying is deactivated or the radio bearer is a DAPS bearer, wherein the first message comprises uplink data.

1) In case that a first message is associated with an SCG, the first message is transmitted through a first path according to a predefined rule for defining a transmission path of the first message.

2) And under the condition that the first message is associated with the SCG, sending the first message through a first path according to first configuration information, wherein the first configuration information is used for indicating a transmission path of the first message associated with the SCG.

3) Under the conditions that a first message is associated with the SCG, a second path is configured, and a preset condition is not met, the first message is sent through the first path; and under the condition that the first message is associated with the SCG, a second path is configured, and the preset condition is met, the device sends the first message through the second path.

1) In the case that a first message is associated with an MCG, the first message is sent over a first path according to predefined rules defining a transmission path for the first message.

2) And under the condition that the first message is associated with the MCG, sending the first message through a first path according to second configuration information, wherein the second configuration information is used for indicating a transmission path of the first message associated with the MCG.

3) Under the conditions that a first message is associated with the MCG, the first path is configured, and preset conditions are not met, the first message is sent through the first path; and under the condition that a first message is associated with the MCG, the first path is configured, and a preset condition is met, the device sends the first message through the second path.

Optionally, as an embodiment, the sending module 402 is configured to send the request to at least one of the following 1) to 4).

1) Transmitting the first message through a first path according to a predefined rule for defining a transmission path of the first message in case of PDCP copy deactivation or a radio bearer is a DAPS bearer.

2) And sending the first message through a first path according to third configuration information under the condition that the PDCP copy is deactivated or the radio bearer is a DAPS bearer, wherein the third configuration information is used for indicating a transmission path of the first message.

3) In a first case, sending the first message through the first path or the second path; in a second case, sending the first message through a first path; wherein the first case comprises: the PDCP copy deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to a first threshold value, and a preset condition is met; the second condition is a condition other than the first condition.

4) In a third case, the first message is preferentially sent through the first path; in a fourth case, sending the first message over the first path; wherein the third condition comprises: the PDCP copy deactivation or the radio bearer is a DAPS bearer, and the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is more than or equal to a second threshold value; the fourth case is a case other than the third case.

Optionally, as an embodiment, the processing module 404 is configured to perform at least one of the following 1) and 2).

1) Activating or deactivating PDCP copying according to the fourth configuration information; wherein the fourth configuration information is used to instruct the apparatus to activate or deactivate PDCP duplication.

The apparatus 400 according to the embodiment of the present application may refer to the flow corresponding to the method 200 according to the embodiment of the present application, and each unit/module and the other operations and/or functions described above in the apparatus 400 are respectively for implementing the corresponding flow in the method 200 and achieving the same or equivalent technical effects, and are not described herein again for brevity.

The dual connectivity communication device in the embodiment of the present application may be a device, a device or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The dual connectivity communication apparatus provided in the embodiment of the present application can implement each process implemented in the method embodiments of fig. 2 to fig. 3, and achieve the same technical effect, and is not described herein again to avoid repetition.

Fig. 5 is a schematic structural diagram of a dual-connection communication apparatus according to an embodiment of the present application, where the apparatus may correspond to a network-side device in another embodiment. As shown in fig. 5, the apparatus 500 includes the following modules.

The obtaining module 502 may be configured to obtain the second message.

A sending module 504, configured to send target configuration information to the terminal according to the second message, where the target configuration information includes at least one of: the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path; the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message; second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message; third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data; fourth configuration information, the fourth configuration information being used for instructing the terminal to activate or deactivate PDCP replication; a first threshold value, which is used for the terminal to determine whether to send a first message through a first path or a second path; a second threshold, which is used for the terminal to determine to send the first message through the first path or the second path.

The dual-connection communication device provided by the embodiment of the application sends the target configuration information to the terminal according to the second message, and the configuration information can instruct the terminal to send the first message through the first path or the second path, or instruct the terminal to activate or deactivate the PDCP copy, so that the transmission delay of the message in dual-connection communication is reduced, and the power consumption of the terminal is reduced.

The apparatus 500 according to the embodiment of the present application may refer to the flow corresponding to the method 300 of the embodiment of the present application, and each unit/module and the other operations and/or functions described above in the apparatus 500 are respectively for implementing the corresponding flow in the method 300 and achieving the same or equivalent technical effects, and are not described herein again for brevity.

Optionally, as shown in fig. 6, an embodiment of the present application further provides a communication device 600, which includes a processor 601, a memory 602, and a program or an instruction stored on the memory 602 and executable on the processor 601, for example, when the communication device 600 is a terminal, the program or the instruction is executed by the processor 601 to implement the processes of the foregoing dual connectivity communication method embodiment, and the same technical effect can be achieved. When the communication device 600 is a network-side device, the program or the instruction is executed by the processor 601 to implement the processes of the above-mentioned dual-connection communication method embodiment, and the same technical effect can be achieved, and for avoiding repetition, the details are not described here again.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for activating or deactivating the PDCP copying according to the preset condition; the communication interface is configured to preferentially send a first message over a first path, where the first message includes an uplink RRC message or uplink data. The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation manners of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, and the like.

Those skilled in the art will appreciate that the terminal 700 may further include a power supply (e.g., a battery) for supplying power to various components, which may be logically connected to the processor 710 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that, in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of a still picture or a video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts of a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data in the processor 710; in addition, the uplink data is sent to the network side equipment. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory and a non-transitory Memory, wherein the non-transitory Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

The radio frequency unit 701 may be configured to preferentially send a first message through a first path, where the first message includes an uplink RRC message or uplink data.

A processor 710 can be configured to activate or deactivate PDCP replication based on a preset condition.

The terminal 700 provided in this embodiment of the present application may also implement each process of the foregoing dual connectivity communication method embodiment, and may achieve the same technical effect, and for avoiding repetition, details are not described here again.

The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the processor is configured to obtain a second message, and the communication interface is configured to send target configuration information to a terminal according to the second message, where the target configuration information includes at least one of: the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path; the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message; second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message; third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data; fourth configuration information, wherein the fourth configuration information is used for indicating the terminal to activate or deactivate PDCP duplication; a first threshold value, which is used for the terminal to determine to send a first message through a first path or a second path; a second threshold value, the second threshold value being used for the terminal to determine whether to send the first message through the first path or the second path.

The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network-side device 800 includes: antenna 81, radio frequency device 82, baseband device 83. The antenna 81 is connected to a radio frequency device 82. In the uplink direction, the rf device 82 receives information via the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes information to be transmitted and transmits the information to the rf device 82, and the rf device 82 processes the received information and transmits the processed information through the antenna 81.

The above-mentioned band processing means may be located in the baseband device 83, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 83, where the baseband device 83 includes a processor 84 and a memory 85.

The baseband device 83 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one of the chips, for example, the processor 84, is connected to the memory 85 to call up the program in the memory 85 to perform the network side device operation shown in the above method embodiment.

The baseband device 83 may further include a network interface 86 for exchanging information with the radio frequency device 82, such as a Common Public Radio Interface (CPRI).

Specifically, the network side device according to the embodiment of the present application further includes: the instructions or programs stored in the memory 85 and executable on the processor 84, and the processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by the modules shown in fig. 5, and achieve the same technical effects, which are not described herein for avoiding repetition.

The embodiments of the present application further provide a readable storage medium, where the readable storage medium may be non-volatile or volatile, and the readable storage medium stores a program or an instruction, where the program or the instruction, when executed by a processor, implement the processes of the foregoing dual connectivity communication method embodiment, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.

The processor may be the processor in the terminal described in the foregoing embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the foregoing dual connectivity communication method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

An embodiment of the present application further provides a computer program product, where the computer program product is stored in a non-transitory readable storage medium, and the computer program product is executed by at least one processor to implement each process of the foregoing dual connectivity communication method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The embodiment of the present application further provides a communication device, which is configured to execute each process of the foregoing dual connectivity communication method embodiment, and can achieve the same technical effect, and for avoiding repetition, details are not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (e.g., a mobile phone, a computer, a server, an air conditioner, or a network-side device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.

Claims

1. A dual connectivity communication method, comprising: the terminal performs at least one of:

preferentially sending a first message through a first path, wherein the first message comprises an uplink Radio Resource Control (RRC) message or uplink data;

and activating or deactivating the PDCP copying according to preset conditions.

2. The method of claim 1, wherein prioritizing the sending of the first message over the first path comprises at least one of:

preferentially sending a first message through a first path under the condition that the first message is associated with a Secondary Cell Group (SCG), wherein the first message comprises an uplink RRC message;

preferentially sending a first message through a first path under the condition that the first message is associated with a Master Cell Group (MCG), wherein the first message comprises an uplink RRC message;

and preferentially sending the first message through a first path under the condition that the PDCP copy deactivation or the radio bearer is a double-activation protocol stack (DAPS) bearer, wherein the first message comprises uplink data.

3. The method of claim 2,

the first message associated with the SCG includes at least one of: triggering the configuration information of the first message to be related to SCG; the first message is used for notifying the network side equipment of the failure of SCG RLC bearing; and/or

The first message associated with the MCG comprises at least one of: triggering the configuration information of the first message to be related to the MCG; the first message is used for notifying the network side equipment MCG RLC bearing failure.

4. The method of claim 2, wherein, in the case that the first message is associated with an SCG, prioritizing the sending of the first message over the first path comprises at least one of:

in case that a first message is associated with an SCG, transmitting the first message through a first path according to a predefined rule, the predefined rule being used for defining a transmission path of the first message;

under the condition that a first message is associated with the SCG, sending the first message through a first path according to first configuration information, wherein the first configuration information is used for indicating a transmission path of the first message associated with the SCG;

under the conditions that a first message is associated with the SCG, a second path is configured, and a preset condition is not met, the first message is sent through the first path; and under the conditions that the first message is associated with the SCG, a second path is configured, and the preset condition is met, the terminal sends the first message through the second path.

5. The method of claim 4, wherein the first path comprises a transmission path between the terminal and an MCG, and wherein the second path comprises a transmission path between the terminal and an SCG.

6. The method according to claim 4 or 5,

the first path comprises a signaling radio bearer (SRB 1), and the second path comprises an SRB3; and/or

The transmission delay of the first path is smaller than the transmission delay of the second path.

7. The method of claim 2, wherein, in the case that the first message is associated with an MCG, prioritizing the sending of the first message over the first path comprises at least one of:

in the case that a first message is associated with an MCG, sending the first message through a first path according to a predefined rule defining a transmission path of the first message;

under the condition that a first message is associated with an MCG, sending the first message through a first path according to second configuration information, wherein the second configuration information is used for indicating a transmission path of the first message associated with the MCG;

under the conditions that a first message is associated with the MCG, the first path is configured, and preset conditions are not met, the first message is sent through the first path; and under the conditions that a first message is associated with the MCG, the first path is configured, and preset conditions are met, the terminal sends the first message through the second path.

8. The method of claim 7, wherein the first path comprises a transmission path between the terminal and an SCG, and wherein the second path comprises a transmission path between the terminal and an MCG.

9. The method according to claim 7 or 8,

the first path comprises SRB3, and the second path comprises SRB1; and/or

10. The method of claim 2, wherein the prioritizing the sending the first message over the first path in case of PDCP copy deactivation or radio bearer being a DAPS bearer comprises at least one of:

in case that the PDCP copy deactivation or the radio bearer is a DAPS bearer, transmitting the first message through a first path according to a predefined rule for defining a transmission path of the first message;

transmitting the first message through a first path according to third configuration information when the PDCP copy is deactivated or a radio bearer is a DAPS bearer, wherein the third configuration information is used for indicating a transmission path of the first message;

in a first case, sending the first message through the first path or a second path; in a second case, sending the first message through a first path; wherein the first case comprises: the PDCP copy deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to a first threshold value, and a preset condition is met; the second condition is a condition other than the first condition;

in a third case, preferentially sending the first message over the first path; in a fourth case, sending the first message over the first path; wherein the third condition comprises: the PDCP copy deactivation or the radio bearer is a DAPS bearer, and the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is more than or equal to a second threshold value; the fourth case is a case other than the third case.

11. The method of claim 10, wherein prioritizing the sending of the first message over the first path comprises:

and sending the first message through the second path under the condition that the data volume sent by the first path reaches the maximum value.

12. The method of claim 10 or 11,

under the condition that the transmission delay between the terminal and the MCG is smaller than that between the terminal and the SCG, the first path is a transmission path between the terminal and the MCG, and the second path is a transmission path between the terminal and the SCG; and/or

And under the condition that the transmission delay between the terminal and the MCG is greater than that between the terminal and the SCG, the first path is a transmission path between the terminal and the SCG, and the second path is a transmission path between the terminal and the MCG.

13. The method of claim 12,

under the condition that the transmission delay between the terminal and the MCG is smaller than that between the terminal and the SCG, the first path is a main RLC entity, and the second path is an auxiliary RLC entity; and/or

And under the condition that the transmission delay between the terminal and the MCG is greater than the transmission delay between the terminal and the SCG, the first path is an auxiliary RLC entity, and the second path is a main RLC entity.

14. The method of claim 1, wherein activating or deactivating PDCP replication according to a preset condition comprises at least one of:

activating or deactivating the PDCP copy according to the fourth configuration information; wherein the fourth configuration information is used for instructing the terminal to activate or deactivate PDCP duplication;

and activating the PDCP copy under the condition that the preset condition is met, and deactivating the PDCP copy under the condition that the preset condition is not met.

15. The method of claim 1,4,7 or 10 wherein the preset conditions include at least one of:

the transmission delay between the terminal and the first network equipment is less than or equal to a third threshold;

the difference between the transmission delay of the terminal and the first network equipment and the transmission delay of the second network equipment is less than or equal to a fourth threshold;

the distance between the terminal and the first network equipment is smaller than or equal to a fifth threshold value;

the time for which the measurement of the first cell group is less than or equal to the sixth threshold exceeds the seventh threshold;

the measurement of the first cell group is less than or equal to an eighth threshold;

the measurement of the first cell group is less than or equal to a ninth threshold for the first time.

16. The method of claim 1,4,7 or 10 wherein the preset conditions include at least one of:

the measurement of the first cell group is below a tenth threshold;

the second cell group measuring better than the first cell group measuring than the first offset value;

the measurement of the second cell group is better than the eleventh threshold;

the measurement of the first cell group is below a twelfth threshold and the measurement of the second cell group is above a thirteenth threshold.

17. Method according to claim 15 or 16, characterized in that the transmission delay of the transmission path associated with the first cell group is smaller than the transmission delay of the transmission path associated with the second cell group.

18. The method of claim 1, further comprising: the terminal sends a second message, wherein the second message comprises at least one of the following:

location information of the terminal;

the transmission delay between the terminal and the first network equipment;

the transmission delay between the terminal and the second network equipment;

the distance of the terminal from the third network device.

And the transmission delay between the terminal and the third network equipment.

19. The method of claim 18, further comprising: the terminal acquires target configuration information, wherein the target configuration information comprises at least one of the following information:

the preset condition is used for the terminal to determine that the first message is sent through the first path or the second path;

first configuration information, where the first configuration information is used to instruct the terminal to send the first message associated with the SCG through the first path or the second path, and the first message is an uplink RRC message;

second configuration information, where the second configuration information is used to instruct the terminal to send the first message associated with an MCG through the first path or the second path, and the first message is an uplink RRC message;

third configuration information, where the third configuration information is used to instruct the terminal to send the first message through the first path or the second path, and the first message is uplink data;

fourth configuration information, the fourth configuration information being used for instructing the terminal to activate or deactivate PDCP replication;

a first threshold value, which is used for the terminal to determine to send the first message through the first path or the second path;

a second threshold, where the second threshold is used for the terminal to determine to send the first message through the first path or the second path.

20. A dual connectivity communication method, comprising:

the network side equipment acquires a second message;

the network side equipment sends target configuration information to a terminal according to the second message, wherein the target configuration information comprises at least one of the following information:

the method comprises the steps that a preset condition is used for the terminal to determine that a first message is sent through a first path or a second path;

the first configuration information is used for indicating the terminal to send a first message associated with the SCG through a first path or a second path, and the first message is an uplink RRC message;

second configuration information, where the second configuration information is used to instruct the terminal to send a first message associated with an MCG through a first path or a second path, and the first message is an uplink RRC message;

third configuration information, where the third configuration information is used to instruct the terminal to send a first message through a first path or a second path, and the first message is uplink data;

a first threshold value, which is used for the terminal to determine whether to send a first message through a first path or a second path;

a second threshold value, the second threshold value being used for the terminal to determine whether to send the first message through the first path or the second path.

21. A dual connectivity communication device, comprising:

a sending module, configured to send a first message preferentially through a first path, where the first message includes an uplink RRC message or uplink data; and/or

And the processing module is used for activating or deactivating the PDCP copy according to a preset condition.

22. The apparatus of claim 21, wherein the sending module is configured to at least one of:

preferentially sending a first message through a first path under the condition that the first message is associated with the SCG, wherein the first message comprises an uplink RRC message;

preferentially sending a first message through a first path under the condition that the first message is associated with the MCG, wherein the first message comprises an uplink RRC message;

and preferentially sending the first message through a first path under the condition that the PDCP copying is deactivated or the radio bearer is a DAPS bearer, wherein the first message comprises uplink data.

23. The method of claim 22, wherein the sending module is configured to at least one of:

under the conditions that a first message is associated with the SCG, a second path is configured, and preset conditions are not met, the first message is sent through the first path; and under the condition that the first message is associated with the SCG, a second path is configured, and the preset condition is met, the device sends the first message through the second path.

24. The apparatus of claim 22, wherein the sending module is configured to at least one of:

in the case that a first message is associated with an MCG, sending the first message through a first path according to a predefined rule for defining a transmission path of the first message;

under the conditions that a first message is associated with the MCG, the first path is configured, and preset conditions are not met, the first message is sent through the first path; and under the conditions that a first message is associated with the MCG, the first path is configured, and preset conditions are met, the device sends the first message through the second path.

25. The apparatus of claim 22, wherein the processing module is configured to at least one of:

transmitting the first message through a first path according to a predefined rule for defining a transmission path of the first message in case of PDCP copy deactivation or a radio bearer is a DAPS bearer;

in a first case, sending the first message through the first path or a second path; in a second case, sending the first message through a first path; wherein the first condition comprises: the PDCP duplication deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to a first threshold value, and a preset condition is met; the second condition is a condition other than the first condition;

in a third case, the first message is preferentially sent through the first path; in a fourth case, sending the first message over the first path; wherein the third condition comprises: the PDCP copy deactivation or the radio bearer is a DAPS bearer, and the sum of the total data volume of the PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is more than or equal to a second threshold value; the fourth case is a case other than the third case.

26. The apparatus of claim 21, wherein the processing module is configured to at least one of:

activating or deactivating PDCP copying according to the fourth configuration information; wherein the fourth configuration information is used to instruct the apparatus to activate or deactivate PDCP duplication;

27. A dual connectivity communication device, comprising:

the acquisition module is used for acquiring a second message;

a sending module, configured to send target configuration information to a terminal according to the second message, where the target configuration information includes at least one of the following:

a second threshold, which is used for the terminal to determine to send the first message through the first path or the second path.

28. A terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the dual connectivity communication method as claimed in any one of claims 1 to 19.

29. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the dual-connectivity communication method according to claim 20.

30. A readable storage medium, on which a program or instructions are stored, which, when executed by a processor, implement the dual connectivity communication method as claimed in any one of claims 1 to 19, or implement the dual connectivity communication method as claimed in claim 20.