WO2023045851A1

WO2023045851A1 - Dual-connectivity communication method and device

Info

Publication number: WO2023045851A1
Application number: PCT/CN2022/119530
Authority: WO
Inventors: 何燃燃; 鲍炜; 杨晓东
Original assignee: 维沃移动通信有限公司
Priority date: 2021-09-22
Filing date: 2022-09-19
Publication date: 2023-03-30
Also published as: CN115915109A

Abstract

Embodiments of the present application belong to the technical field of communications. Disclosed are a dual-connectivity communication method, and a device. The dual-connectivity communication method in the embodiments of the present application comprises: a terminal performs at least one of the following: preferentially sending a first message by means of a first path, the first message comprising an uplink RRC message or uplink data; and activating or deactivating PDCP duplication according to a preset condition.

Description

Dual connectivity communication method and device

cross reference

The present invention claims the priority of the Chinese patent application submitted to the China Patent Office on September 22, 2021, with the application number 202111108186.9, and the title of the invention is "dual connection communication method and device". The entire content of this application is incorporated by reference in the present invention middle.

technical field

The present application belongs to the technical field of communication, and specifically relates to a dual-connectivity communication method and device, and the device may include a dual-connectivity communication device, a terminal, or a network-side device.

Background technique

Dual Connectivity (DC) provides terminals with resources of two network nodes (access network elements), one of which is called the master node (MN) and the other is called the secondary node (SN) ), the master node controls the master cell group (MasterCell Group, MCG), and the slave node controls the secondary cell group (Secondary Cell Group, SCG).

Future mobile communication may support non-terrestrial network (Non-Terrestrial Networks, NTN) dual connectivity, for example, ground communication network (Terrestrial Networks, TN)-NTN dual connectivity, NTN-NTN dual connectivity, etc., for TN-NTN dual connectivity, due to Transmission via NTN has a greater delay than transmission via TN, and transmission requires higher transmit power, resulting in increased terminal power consumption or data transmission delay. For NTN-NTN dual connectivity, due to different satellites It may be in different satellite orbits, and the transmission delay through the two nodes is quite different, which may also cause terminal power consumption or increase data transmission delay. Therefore, it is necessary to redefine the transmission behavior of the terminal under dual connectivity.

Contents of the invention

Embodiments of the present application provide a dual connectivity communication method and device, which can solve the problem of increased power consumption of a terminal or increased data transmission delay caused by differences in dual connectivity transmission delay and the like.

In a first aspect, a dual connectivity communication method is provided, including: the terminal performs at least one of the following: sending a first message preferentially through a first path, where the first message includes an uplink RRC message or uplink data; according to preset conditions, Activate or deactivate PDCP replication.

In a second aspect, a dual connectivity communication method is provided, including: a network-side device acquires a second message; the network-side device sends target configuration information to a terminal according to the second message, and the target configuration information includes at least the following One: preset conditions, the preset conditions are used by the terminal to determine to send the first message through the first path or the second path; first configuration information, the first configuration information is used to instruct the terminal to send the first message through the first path The path or the second path sends the first message associated with the SCG, the first message is an uplink RRC message; the second configuration information, the second configuration information is used to instruct the terminal to send the SCG through the first path or the second path A first message associated with the MCG, where 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, the The first message is uplink data; the fourth configuration information, the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication; the first threshold, the first threshold is used for the terminal to determine to pass the first path or the second path to send the first message; and a second threshold, where the second threshold is used by the terminal to determine to send the first message through the first path or the second path.

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

In a fourth aspect, a dual-connectivity communication device is provided, including: an acquiring module, configured to acquire a second message; a sending module, configured to send target configuration information to a terminal according to the second message, and the target configuration information includes at least the following One: preset conditions, the preset conditions are used by the terminal to determine to send the first message through the first path or the second path; first configuration information, the first configuration information is used to instruct the terminal to send the first message through the first path The path or the second path sends the first message associated with the SCG, the first message is an uplink RRC message; the second configuration information, the second configuration information is used to instruct the terminal to send the SCG through the first path or the second path A first message associated with the MCG, where 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, the The first message is uplink data; the fourth configuration information, the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication; the first threshold, the first threshold is used for the terminal to determine to pass the first path or the second path to send the first message; and a second threshold, where the second threshold is used by the terminal to determine to send the first message through the first path or the second path.

According to a fifth aspect, a terminal is provided. The terminal includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor. When the program or instruction is executed by the processor Implement the method as described in the first aspect.

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

According to the seventh aspect, a network-side device is provided, the network-side device includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, and the program or instruction is executed by the The processor realizes the method described in the second aspect when executing.

In an eighth aspect, a network side device is provided, including a processor and a communication interface, wherein 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, The target configuration information includes at least one of the following: preset conditions, the preset conditions are used by the terminal to determine to send the first message through the first path or the second path; first configuration information, the first configuration information It is used to instruct the terminal to send a first message associated with the SCG through the first path or the second path, the first message is an uplink RRC message; second configuration information, the second configuration information is used to instruct the terminal Send a first message associated with the MCG through the first path or the second path, the first message is an uplink RRC message; third configuration information, the third configuration information is used to instruct the terminal to pass the first path or the second path Two paths send a first message, where the first message is uplink data; fourth configuration information, where the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication; a first threshold, where the first threshold is used The terminal determines to send the first message through the first path or the second path; the second threshold value is used for the terminal to determine to send the first message through the first path or the second path.

A ninth aspect provides a readable storage medium, on which a program or an instruction is stored, and when the program or instruction is executed by a processor, the method as described in the first aspect is implemented, or the method as described in the second aspect is implemented. method described in the aspect.

In a tenth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect , or implement the method described in the second aspect.

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

In this embodiment of the present application, the terminal preferentially sends the first message and/or activates or deactivates PDCP replication through the first path, which is beneficial to reduce message transmission delay and terminal power consumption in dual connectivity communication.

Description of 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 flowchart of a dual connectivity communication method according to an embodiment of the present application;

FIG. 3 is a schematic flowchart of a dual connectivity communication method according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a dual connectivity communication device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a dual connectivity 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 ways

The technical solutions in the embodiments of the application will be clearly described below in conjunction with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application belong to the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. 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 sequences other than those illustrated or described herein and that "first" and "second" distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects. In addition, "and/or" in the description and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

It is worth noting that the technology described in the embodiment of this application is not limited to the Long Term Evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-Advanced, LTE-A) system, and can also be used in other wireless communication systems, such as code 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 (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 technology can be used for the above-mentioned system and radio technology, and can also be used for other systems and radio technologies. The following description describes the New Radio (New Radio, NR) system for exemplary purposes, and uses NR terminology in most of the following descriptions, and these technologies can also be applied to applications other than NR system applications, such as the 6th Generation (6 ^th Generation , 6G) communication system.

Fig. 1 shows a schematic diagram of a wireless communication system to which this embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network side device 12 . Wherein, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) equipment, robots, wearable devices (Wearable Device), vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture etc.) and other terminal-side devices, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.) , smart wristbands, smart clothing, game consoles, 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 a base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Next Generation Node B (gNB), Home Node B, Home Evolved Node B, WLAN Access point, WiFi node, Transmitting Receiving Point (Transmitting 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 specific technical terms. 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 communications may support dual connectivity of non-terrestrial networks (Non-Terrestrial Networks, NTN), for example, terrestrial networks (Terrestrial Networks, TN)-NTN dual connectivity (abbreviated as TN-NTN DC), NTN -NTN dual connection (NTN-NTN DC for short), which may have the following problems listed in 1-3:

1. For the secondary cell group (Secondary Cell Group, SCG) related (associated) uplink RRC message, according to the transmission mechanism in the related art, for the MCG related uplink radio resource control (Radio Resource Control, RRC) message, for example, measure The report (MeasurementReport), terminal assistance information (UEAssistanceInformation) and failure information (FailureInformation) are preferentially transmitted directly to the MCG through the Signaling Radio Bearer (SRB) 1. For the uplink RRC message related to the SCG, if SRB3 is configured, it is preferentially transmitted to the SCG directly through SRB3, otherwise, it is transmitted through SRB1.

For TN-NTN DC, the transmission through NTN has a greater delay than the transmission through TN; for NTN-NTN DC, since different satellites may be in different satellite orbits, the transmission delay between the terminal and SCG and MCG The difference may be very large, which may cause the terminal to transmit uplink RRC messages to require higher transmission power, resulting in power consumption and transmission delay of the terminal.

2. For split bearers without duplication configuration (Split Bearers w/o duplication), in related technologies, in the case of split bearers without duplication configuration, it is determined based on whether the data volume reaches the data split threshold (ul-DataSplitThreshold) Whether to send on the primary leg or the secondary leg.

As above, for TN-NTN DC, the transmission through NTN has a greater delay than the transmission through TN. For NTN-NTN DC, since different satellites may be in different satellite orbits, the transmission between the terminal and SCG and MCG The time delay may vary greatly, which may lead to higher transmission power required for the terminal to transmit uplink data, resulting in power consumption and data transmission delay of the terminal.

3. For the activation/deactivation of Split bearer duplication, if Packet Data Convergence Protocol (PDCP) replication is activated, as above, for NTN-TN DC, due to the large transmission delay of NTN, The PDCP protocol data unit (Protocol Data Unit, PDU) transmitted through the NTN path may arrive at the TN PDCP entity too late, and may have already fallen outside the reordering window, resulting in the receiving end being unable to decode the data correctly. For NTN-NTN DC, since different satellites may be in different satellite orbits, the transmission delay between the terminal and SCG and MCG may vary greatly, which may cause the data to arrive at a PDCP entity on the network side too late, resulting in incorrect decoding at the receiving end data.

In view of the above problems, the embodiment of the present application provides a dual-connection communication method, so as to reduce the data transmission delay as much as possible, reduce the power consumption of the terminal, and improve the success rate of data decoding.

The dual connectivity communication method and device provided by the embodiments of the present application will be described in detail below through some embodiments and application scenarios with reference to the accompanying drawings.

As shown in FIG. 2 , an embodiment of the present application provides a dual connectivity communication method 200, which can be executed by a terminal, in other words, the method can be executed by software or hardware installed in the terminal, and the method includes the following steps.

S202: The terminal performs at least one of the following: preferentially send a first message through the first path, the first message includes an uplink radio resource control (Radio Resource Control, RRC) message or uplink data; activate or deactivate according to preset conditions Packet Data Convergence Protocol (PDCP) duplication.

Various embodiments of the present application may be applicable to the following dual connection scenarios: 1) In TN-NTN DC, TN serves as the master node (Masternode, MN), and NTN serves as the secondary node (Secondary node, SN); 2) In TN-NTN DC, NTN serves as MN, and TN serves as SN; 3) In NTN-NTN DC, NTN serves as MN, and NTN serves as SN.

The NTN involved in various embodiments of the present application includes 1) a non-terrestrial network based on transparent forwarding; 2) a non-terrestrial network based on signal regeneration.

In this embodiment, the first path can be SRB1, and the terminal can also be configured with a second path, and the second path can be SRB3; or the first path can be SRB3, and the second path can be SRB1; or, the first path can be the primary An RLC entity (primary RLC entity), and the second path is a secondary RLC entity (secondary RLC entity); or, the first path may be a secondary RLC entity, and the second path is 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 transmission power of the first path is smaller than that of the second path.

Before this embodiment, the terminal can report auxiliary information, so that the network side device can 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 present application, the general implementation principle is to send the first message through a network node with a smaller delay as much as possible, avoid sending the first message through a network node with a larger delay, and reduce the transmission delay of the first message; at the same time , a small delay usually means a short path, which is convenient to reduce the power consumption of the terminal.

For the preset conditions mentioned in this embodiment, for example, before this embodiment, the terminal can report auxiliary information, so that the network side device can instruct the terminal to activate or deactivate PDCP replication based on the auxiliary information reported by the terminal, That is, in this example, the terminal activates or deactivates PDCP replication based on the network-side device configuration; or, the network-side device configures preset conditions for the terminal based on the auxiliary information reported by the terminal, and the terminal independently decides to activate or deactivate PDCP replication based on the preset conditions. . The preset condition in this example is configured by the network side device. In other examples, the above preset condition may also be predefined, such as stipulated in a protocol.

In this example, for example, when the delay of the first path is less than the delay of the second path, and the delay difference reaches a preset value, the terminal deactivates PDCP replication, preferentially uses the first path to send the first message, and avoids using the second path. The problem of large delay caused by two-path transmission.

In this example, for example, when the delay of the first path is smaller than the delay of the second path, and the delay difference does not reach the preset value, the terminal activates PDCP replication, so that the first path and the second path can be used to send the second path at the same time. One message, improve the success rate of data decoding, and improve the reliability of message transmission.

In the dual connectivity communication method provided by the embodiment of the present application, the terminal preferentially sends the first message through the first path and/or activates or deactivates PDCP replication, which is beneficial to reduce message transmission delay and terminal power consumption in dual connectivity communication. For example, the terminal can preferentially transmit the first message on a path with a small transmission delay and requires a small transmission power, which reduces the power consumption of the terminal and reduces the data transmission delay; moreover, the terminal can correctly configure the activation or deactivation of PDCP, The success rate of data decoding at the receiving end is improved.

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

1) In the case that the first message is associated with a secondary cell group (Secondary Cell Group, SCG), the first message is preferentially sent through the first path, and 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 the MCG, and the second path may include a transmission path between the terminal and the SCG.

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

Optionally, the association between the first message and the SCG may include at least one of the following: the configuration information triggering the first message is related to the SCG; the first message is used to notify the network side device of failure of the SCG RLC bearer.

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

2) In the case that the first message is associated with the master cell group (Master Cell Group, MCG), the first message is preferentially sent through the first path, and the first message includes 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 association of the first message with the MCG includes at least one of the following: the configuration information triggering the first message is related to the MCG; the first message is used to notify the network side device of the failure of the MCG RLC bearer.

3) In the case where PDCP replication is deactivated or the radio bearer is a dual active protocol stack (Dual Active Protocol Stack, DAPS) bearer, the first message is preferentially sent through the first path, and the first message includes uplink data.

The following three examples will be used to describe the above 1) to 3) in detail.

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

a) When the first message is associated with the SCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message.

The predefined rule may be the content of a protocol agreement. For example, in this example, the protocol stipulates that the first message is sent through the first path when the first message is associated with the SCG.

b) When the first message is associated with the SCG, sending the first message through a first path according to first configuration information, where the first configuration information is used to indicate a transmission path of the first message associated with the SCG .

In this example, for example, the network side device may indicate the first configuration information to the terminal based on the measurement report of the terminal. The first configuration information may be used to configure the terminal to: when the first message is associated with the SCG, send the first message through the first path. State the first news.

c) When the first message is associated with the SCG, is configured with a second path, and does not meet the preset conditions, send the first message through the first path; in other embodiments, when the first message is associated with the SCG If the second path is associated and configured, and the preset condition is met, the terminal sends the first message through the second path. For the specific content of the preset condition, please refer to the introduction of the following embodiments.

In the second example, when the first message is associated with the MCG, sending the first message preferentially through the first path includes at least one of the following a) to c).

a) In the case that the first message is associated with the MCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message.

The predefined rule may be the content of a protocol agreement. For example, in this example, the agreement stipulates that the first message is sent through the first path when the first message is associated with the MCG.

b) When the first message is associated with the MCG, sending the first message through the first path according to the second configuration information, the second configuration information is used to indicate the transmission path of the first message associated with the MCG .

In this example, for example, the network side device may indicate the second configuration information to the terminal based on the measurement report of the terminal, and the second configuration information may be used to configure the terminal to: when the first message is associated with the MCG, send the State the first news.

c) When the first message is associated with the MCG, is configured with the first path, and does not meet the preset condition, send the first message through the first path; in other embodiments, in the first message When being associated with the MCG, configured with the first path, and meeting a preset condition, the terminal sends the first message through the second path. For the specific content of the preset condition, please refer to the introduction of the following embodiments.

In a third example, when PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message preferentially through the first path includes at least one of the following a) to d).

a) When PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message.

The predefined rule may be the content of a protocol agreement. For example, the protocol stipulates that when PDCP replication is deactivated or the radio bearer is a DAPS bearer, the first message is sent through the first path.

b) When PDCP replication is deactivated or the radio bearer is a DAPS bearer, send the first message through the first path according to third configuration information, where the third configuration information is used to indicate the transmission path of the first message .

In this example, for example, the network side device may indicate the third configuration information to the terminal based on the measurement report of the terminal, and the third configuration information may be used to configure the terminal to: when PDCP replication is deactivated or the radio bearer is a DAPS bearer, through the third A path sends the first message.

c) In the first case, sending the first message through the first path or the second path; in the second case, sending the first message through the first path; wherein, the first case includes : PDCP replication is deactivated or the radio bearer is a DAPS bearer, the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the first threshold, and the preset condition is met; the second The second case is a case other than the first case. For the specific content of the preset condition, please refer to the introduction of the following embodiments.

This embodiment includes two ways. Way 1: For the way that the second path is a secondary RLC entity, the first situation includes: PDCP replication is deactivated or the radio bearer is a DAPS bearer, the second path is configured, and the total data volume of PDCP The sum of the amount of RLC data waiting for initial transmission with the first path and the second path is greater than or equal to the first threshold and meets the preset condition; mode 2, for the mode where the second path is the main RLC entity, the first case includes: PDCP replication is deactivated or the radio bearer is a DAPS bearer, the sum of the total PDCP data volume and the RLC data volume waiting for initial transmission on the first path and the second path is greater than or equal to the first threshold, and meets the preset condition.

d) In the third case, sending the first message preferentially through the first path; in the fourth case, sending the first message through the first path; wherein, the third case includes: PDCP replication is deactivated or the radio bearer is a DAPS bearer, and the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the second threshold; the fourth case is that the first Circumstances other than the three conditions. The second threshold may be the same as or different from the first threshold.

The sending of the first message preferentially through the first path mentioned in the above d) includes: sending the first message through the second path when the amount of data sent by the first path reaches the maximum value. A message, that is, when the amount of data sent by the first path reaches the maximum, it is sent through the second path.

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

In this example, for example, 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 the primary RLC entity, and the second path is the secondary RLC entity.

Optionally, in the examples a) to d) above, in the case 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 between the terminal and the SCG. A transmission path of the SCG, where the second path is a transmission path between the terminal and the MCG.

In this example, for example, 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 secondary RLC entity, and the second path is a primary RLC entity.

Optionally, in each of the foregoing embodiments, activating or deactivating PDCP replication by the terminal according to preset conditions may include at least one of the following 1) and 2).

1) Activating or deactivating PDCP replication according to fourth configuration information; wherein, the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication.

2) Activating PDCP replication when the preset condition is met, and deactivating PDCP replication when the preset condition is not met.

Optionally, the preset conditions mentioned in the foregoing embodiments may include at least one of the following.

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

2) The difference between the transmission delay between the terminal and the first network device and the transmission delay of the second network device is less than or equal to the fourth threshold.

3) The distance between the terminal and the first network device is less than or equal to a fifth threshold.

4) The time during 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 group of cells is less than or equal to the eighth threshold.

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

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

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

2) The measurement of the second cell group is better than the measurement of the first cell group by the first offset value.

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

4) The measurement of the first group of cells is below the twelfth threshold, and the measurement of the second group of cells is better than the thirteenth threshold.

In each example related to the above preset conditions, 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 can be the cell group where TN is located, such as MCG, and MCG is a series of cells associated with the master node; or, the first cell group can be the cell group where TN is located, such as SCG, SCG It is a series of cells associated with the secondary node.

For NTN-NTN DC, the first cell group can be the cell group where the access network element with a small delay is located, such as MCG, and the MCG is a series of cells associated with the master node; or, the first cell group can be The cell group where the smaller access network elements are located, such as the SCG, and the SCG is a series of cells associated with the secondary node.

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

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

Optionally, the method provided by each of the foregoing embodiments may further include the following step: the terminal sends a second message, and the second message includes at least one of the following: location information of the terminal; The transmission delay of the device; the transmission delay between the terminal and the second network device; the distance between the terminal and the third network device; the transmission delay between the terminal and the third network device.

The second message may be used by the network side device to deliver target configuration information.

Optionally, the method provided in the foregoing embodiments may further include the following step: the terminal acquires target configuration information, where the target configuration information includes at least one of the following 1) to 7).

1) A preset condition, where the preset condition is used for the terminal to determine to send the first message through the first path or the second path.

2) 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, where the first message is an uplink RRC message.

3) 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, where the first message is an uplink RRC message.

4) 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, where the first message is uplink data.

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

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

For the functions of various information in the target configuration information, reference may be made to the introductions of the foregoing embodiments.

In order to describe the dual connectivity communication method provided by the embodiment of the present application in detail, the following will describe in conjunction with several specific embodiments.

In the TN-TN DC architecture in the related art, the distance from the terminal to the MCG is similar to the distance from the terminal to the SCG. Therefore, in the current wireless communication system protocols, most of the transmission delays and channels of transmission paths between the terminal and the MCG and between the terminal and the SCG are assumed. There is no obvious difference in quality, and therefore, in the above-mentioned relevant mechanism of transmission path selection, the time delay and channel quality difference of different transmission paths and the transmission power of the terminal are not fully considered. For TN-NTN and NTN-NTN DC scenarios, due to the huge difference in the delay and channel quality of the MCG and SCG transmission paths mentioned above, there will obviously be obvious technical problems in direct multiplexing related technologies. This application provides the following specific embodiments To solve the above technical problems.

Embodiment one

In this embodiment, the first message is uplink RRC message transmission, TN is used as MN, and NTN is used as SN. This embodiment is also applicable to NTN-NTN DC, wherein the transmission delay of MCG is less than the transmission delay of SCG, for example, MCG is a low-orbit (Low Earth Orbiting, LEO) satellite, and SCG is a geostationary earth orbit (Geostationary Earth Orbiting) satellite. , GEO) satellites.

In this embodiment, the terminal preferentially sends 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 Measurement Report, UE Assistance Information and Failure Information.

In this embodiment, for example, the first message associated with the SCG is preferentially sent through the first path.

The first message associated with the SCG is sent preferentially through the first path, including at least one of the following:

1) For the first message associated with the SCG, it is stipulated in the protocol to send it through the first path.

For example, the uplink RRC message associated with the SCG is sent to the MCG through the SRB1 container (Container) (whether SRB3 is configured or not), more specifically, the uplink RRC message is embedded into the uplink information transmission multiple access technology dual Connection (UL Information Transfer MRDC) message.

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

The above-mentioned behavior may be an agreement. For example, if the agreement stipulates that the first message associated with the SCG is preferentially sent through the first path, it is always preferentially sent through the first path. For example, if the agreement stipulates that the uplink RRC message associated with the SCG is sent to the MCG through the SRB1 Container (regardless of whether SRB3 is configured), then the uplink RRC message associated with the SCG is always sent to the MCG through the SRB1 Container (regardless of whether the SRB3 is configured or not). configuration).

If it is stipulated in the protocol that the first message associated with the MCG is preferentially sent through the first path, it is always preferentially sent through the first path. Specifically, for example, if the agreement stipulates that the uplink RRC message associated with the MCG is sent to the MCG through the SRB1 Container, then the uplink RRC message associated with the MCG is always sent to the MCG through the SRB1 Container.

2) For the first message associated with the SCG, send it through the first path based on the first configuration information, where the first configuration information is used to instruct the terminal to send the first information through the first path or the second path.

The above behavior can be configured by the network side. For example, if it is configured by the network side, for the first message associated with the SCG, the network side can configure whether to send it preferentially through the first path or through the second path. Specifically, for example, for the uplink RRC message associated with the SCG, the network can configure whether to "use SRB1 Container to send to MCG" or "use SRB3 to send to SCG first".

If the network side is configured to send the uplink RRC message associated with the SCG to the MCG using SRB1 Container, the terminal will use the SRB1 Container to send it to the MCG; Send to SCG using SRB3. Specifically, the network can use 1 bit to indicate whether the uplink RRC message associated with the SCG is sent to the MCG using the SRB1 Container or sent to the MCG using the SRB1 Container. Specifically, if the value of this bit is 1, it indicates that the RRC message associated with the SCG is The uplink RRC message is sent to the MCG using the SRB1 Container. If the value of this bit is 0, it means that if SRB3 is configured, it is sent to the SCG using the SRB3 Container, and vice versa. Or, it can also be that this field exists, which means that the uplink RRC message associated with SCG is sent to MCG using SRB1 Container, and this field does not exist, which means that if SRB3 is configured, it is sent to SCG using SRB3 Container, and vice versa. Or the value of this field can be true (true). For the uplink RRC message associated with SCG, use SRB1 Container to send to MCG. The value of this field is false (false), which means that if SRB3 is configured, use SRB3 Container to send to SCG , and vice versa.

3) For the first message associated with the SCG, if the second path is configured, if the first condition and/or the second condition are satisfied, send it through the second path; otherwise, send it 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 are not satisfied, it is sent through the first path.

The first condition and/or the second condition corresponds to the preset condition in the foregoing embodiments.

For example, if the first condition and/or the second condition are satisfied, for the SCG first condition and/or the second condition uplink RRC message, if SRB3 is configured, the uplink RRC message is transmitted through SRB3, more specifically, through SRB3 Submit these RRC messages to the lower layer for transmission.

The foregoing preset conditions may be agreed upon by the protocol or configured by the network side. The above-mentioned behaviors can be stipulated by the protocol or configured by the network side. If the agreement is agreed, the above-mentioned behaviors will always be performed; if configured by the network side, the network can use a 1-bit field to instruct the UE to perform the above-mentioned behaviors. The specific examples are the same as above. Or the network side configures the foregoing preset conditions, and the terminal executes the foregoing behaviors.

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

1) The transmission delay between the terminal and the first network device is less than or equal to the third threshold.

For example, the first network device is NTN, and the transmission delay between the terminal and the NTN is less than or equal to the third threshold, for example, the transmission delay with the NTN may include a timing advance (Timing Advance, TA) and and/or the TA indicated by the network, or may include the transmission delay of the serving link and/or the feedback link.

2) The difference between the transmission delay between the terminal and the first network device and the transmission delay between the terminal and the second network device is less than or equal to the fourth threshold.

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

3) The distance between the terminal and the first network device is less than or equal to the fifth threshold.

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

4) The time when 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 when the MCG measurement 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 the value of the seventh threshold. For example, when the measurement of MCG is less than or equal to the sixth threshold, the timer is started, and when the measurement of MCG is greater than the sixth threshold, the timer is stopped; Seven thresholds. For another example, start the timer when the measurement of MCG is less than the sixth threshold, stop the timer when the measurement of MCG is greater than or equal to the sixth threshold, if the timer expires, it means that the time for the measurement of MCG to be less than or equal to the sixth threshold exceeds the sixth threshold Seven thresholds.

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

Optionally, the second condition includes at least one of the following:

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

For example, the measurement of MCG is below a tenth threshold.

For example, the measurements of the SCG are better than the measurements of the MCG by the first offset value.

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

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

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

The above measurement includes measurement results of one or more beams (beams) of a cell configured on the network side, and the measurement may include any one of the following: only Reference Signal Receiving Power (RSRP); only Reference Signal Receiving Power Quality (Reference Signal Receiving Quality, RSRQ); only Signal to Interference plus Noise Ratio (SINR), RSRP and RSRQ; RSRP and SINR; RSRQ and SINR; RSRP; RSRQ and SINR; only received signal code power ( Received Signal Code Power, RSCP); only the ratio of each received signal energy to noise power spectrum (Ratio of received energy from the pilot signal CPICH per chip to noise power spectral density, EcN0); RSCP and EcN0.

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

1) The location information of the terminal.

For example, the location information includes rough 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 other information.

2) The transmission delay between the terminal and the first network device.

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

3) The transmission delay between the terminal and the second network device.

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

4) The distance between the terminal and the third network device.

For example, if the third network device is NTN, which is based on regenerative deployment, that is, the gNB is on the satellite, the distance is the distance between the terminal and the satellite; if it is transparent forwarding, the distance can be the distance between the terminal and the satellite, or It can be the distance between the terminal and the satellite plus the distance between the satellite and the ground base station.

5) The transmission delay between the terminal and the third network device.

Optionally, this embodiment may further include the following step: the terminal acquires target configuration information, where the configuration information includes at least one of the following:

1) The first condition.

2) The second condition.

3) First configuration information, 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.

4) 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, where the first message is an uplink RRC message.

5) 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, where the first message is uplink data.

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

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

Embodiment two

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

Some examples in this embodiment are similar to those in Embodiment 1, and will not be repeated here.

In this embodiment, the terminal sends the first message through 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 Measurement Report, UE Assistance Information and Failure Information.

In this embodiment, for example, the first message associated with the MCG is preferentially sent through the first path.

The first message associated with the MCG is sent preferentially through the first path, including at least one of the following:

1) For the first message associated with the MCG, if the first path is configured, send it through the first path.

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

For the uplink RRC messages associated with the SCG, if SRB3 is configured, they are sent to the SCG through the SRB3 Container, that is, these RRC messages are handed over to the lower layer for transmission through SRB3.

The above-mentioned behavior may be agreed upon, and the principle of the example is the same as that in Embodiment 1.

2) For the first message associated with the MCG, based on the second configuration information, send it through the first path or the second path.

The above behavior is configured on the network side, and the example is the same as that in Embodiment 1.

3) For the first message associated with the MCG, if the first condition and/or the second condition are met, send it through the second path; otherwise, send it through the first path.

For example, if the first condition and/or the second condition are met, for the uplink RRC message associated with the MCG, the uplink RRC message is transmitted through SRB1; otherwise, for the uplink RRC message associated with the MCG, if SRB3 is configured, if not satisfied The first condition and/or the second condition is to transmit the uplink RRC message through SRB3, more specifically, to submit these RRC messages to the lower layer through SRB3 for transmission or to embed the uplink RRC message into a certain RRC message through SRB3 middle.

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

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

The design principle of the second condition may be that the cell group where the TN (SCG) is located is sufficiently poor, for example, the time delay is large.

Optionally, the second condition includes at least one of the following:

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

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

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

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

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

The above measurement includes the measurement results of one or more beams (beams) of a cell configured on the network side, and the measurement may include: only Reference Signal Received Power (RSRP); only Reference Signal Received Quality (Reference Signal Received Power, RSRP); Receiving Quality, RSRQ); only Signal to Interference plus Noise Ratio (SINR), RSRP and RSRQ; RSRP and SINR; RSRQ and SINR; RSRP; RSRQ and SINR; only Received Signal Code Power (Received Signal Code Power , RSCP); EcN0 only; either RSCP or EcN0.

1) The location information of the terminal.

2) The transmission delay between the terminal and the first network device.

3) The transmission delay between the terminal and the second network device.

4) The distance between the terminal and the third network device.

1) The first condition.

2) The second condition.

3) 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, where the first message is an uplink RRC message.

Embodiment three

This embodiment mainly introduces the situation that split bearers are not configured with duplication (Split Bearers w/o duplication), TN is used as MN, and NTN is used as SN. This embodiment is also applicable to NTN-NTN DC, where the transmission delay of the MCG is smaller than the transmission delay of the SCG, for example, the MCG is LEO, and the SCG is GEO.

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

In this embodiment, for example, if PDCP replication is deactivated or the radio bearer is a DAPS bearer, the terminal preferentially sends the first message through the first path.

If the PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message preferentially through the first path, including at least one of the following:

1) If PDCP replication is deactivated or the radio bearer is a DAPS bearer, send the first message through the first path. The behavior may be a protocol agreement, and the example is the same as that in Embodiment 1.

2) If the PDCP replication is deactivated or the radio bearer is a DAPS bearer, send the first message through the first path according to the third configuration information, where the third configuration information is used to indicate the transmission path of the first message. This behavior can be configured by the network side, and the example is the same as that in Embodiment 1.

3) If PDCP replication is deactivated or the radio bearer is a DAPS bearer, and the total amount of PDCP data and the amount of RLC data waiting for initial transmission on the first path and the second path are equal to or greater than the first threshold, if the first condition is met and/or For the second condition, send it through the first path or the second path; otherwise, send it through the first path.

For example, if PDCP replication is deactivated or the radio bearer is a DAPS bearer, if split secondary RLC entity is configured, and the total amount of PDCP data and the amount of RLC data waiting for primary RLC entity and split secondary RLC entity to be initially transmitted is equal to or greater than ul-DataSplitThreshold , if the first condition and/or the second condition are met, submit the PDCP PDU to the primary RLC entity or split secondary RLC entity.

Otherwise, deliver the PDCP PDU to the primary RLC entity. Specifically, if PDCP duplication is deactivated, if split secondary RLC entity is configured, and the total amount of PDCP data and the amount of RLC data waiting for primary RLC entity and split secondary RLC entity to be initially transmitted is less than the first threshold, or does not meet the first threshold The first condition and/or the second condition, submit the PDCP PDU to the primary RLC entity.

4) If PDCP duplication is deactivated or the radio bearer is a DAPS bearer, and the total amount of PDCP data and the amount of RLC data waiting for initial transmission on the first path and the second path are greater than or equal to the second threshold, the priority is sent through the first path; otherwise , sent through the first path.

For example, if PDCP duplication is deactivated or the radio bearer is a DAPS bearer, if split secondary RLC entity is configured, and the total amount of PDCP data and the amount of RLC data waiting for primary RLC entity and split secondary RLC entity are equal to or greater than the second threshold , submit the PDCP PDU to the secondary RLC entity first; otherwise, submit the PDCP PDU to the Primary RLC entity.

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

The preferentially sending through the first path includes: only sending through the second path when the amount of data sent by the first path reaches the maximum.

For example, when the amount of data submitted to the secondary RLC entity by PDCP PDU reaches the maximum, the remaining data is submitted to the primary RLC entity.

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

The remaining parts are the same as those in Embodiment 1 and will not be described in detail.

Embodiment four

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

All the examples in this embodiment are similar to those in Embodiment 2, and will not be repeated here.

In this embodiment, for example, if PDCP replication is deactivated or the radio bearer is a DAPS bearer, the first message is preferentially sent through the first path.

If the PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message preferentially through the first path includes at least one of the following:

1) If PDCP replication is deactivated or the radio bearer is a DAPS bearer, send the first message through the first path. This behavior is a protocol agreement, and the specific example is similar to the second embodiment.

2) If PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through the first path based on third configuration information, where the third configuration information is used to indicate the transmission path of the first message. This behavior is configured on the network side, and a specific example is the second embodiment.

For example, the network side may also configure the first threshold to be infinity based on the measurement report of the terminal. If the network side configures the threshold to be infinity, the terminal always submits PDCP PDUs to the primary RLC entity.

For example, the network side can configure and modify the path corresponding to the MCG to be the secondary leg, and the path corresponding to the SCG to be the primary leg. After receiving the configuration, the terminal judges to send the second information through the first path or the second path according to the mechanism in the related technology, that is, if PDCP duplication is deactivated, if split secondary RLC entity is configured, and the total data volume of PDCP and the primary RLC entity and split secondary RLC entity wait for the amount of RLC data initially transmitted to be equal to or greater than the first threshold, and submit PDCP PDU to primary RLC entity or secondary RLC entity; otherwise, submit PDCP PDU to primary RLC entity.

3) If PDCP duplication is deactivated or the radio bearer is a DAPS bearer, and the total amount of PDCP data and the amount of RLC data waiting for initial transmission on the first path and the second path are equal to or greater than the first threshold, if the first condition is met and/or For the second condition, send it through the first path or the second path; otherwise, send it through the first path.

For example, if PDCP duplication is deactivated or the radio bearer is a DAPS bearer, if split secondary RLC entity is configured, and the total amount of PDCP data and the amount of RLC data waiting for primary RLC entity and split secondary RLC entity to be initially transmitted is equal to or greater than the first threshold , if the first condition and/or the second condition are met, submit the PDCP PDU to the primary RLC entity or split secondary RLC entity.

Otherwise, deliver the PDCP PDU to the primary RLC entity. Specifically, if PDCP duplication is deactivated, if split secondary RLC entity is configured, and the total amount of PDCP data and the amount of RLC data waiting for primary RLC entity and split secondary RLC entity to be initially transmitted is less than the first threshold, or does not meet the first threshold The first condition and/or the second condition, submit the PDCP PDU to the secondary RLC entity.

Wherein, 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 submits the PDCP PDU to the primary RLC entity.

The remaining parts are the same as those in Embodiment 2, and will not be repeated here.

Embodiment five

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

In this embodiment, the terminal activates or deactivates PDCP duplication.

The activation or deactivation of PDCP replication includes at least one of the following:

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

The activating or deactivating PDCP duplication based on the fourth configuration information includes: if the network side configures to activate PDCP duplication, the terminal activates PDCP duplication; if the network side configures to deactivate PDCP duplication, then the network side deactivates PDCP duplication. For example, the network uses a 1-bit field to indicate that the terminal activates or deactivates PDCP duplication. If this field exists, it means that PDCP duplication is configured. If this field is set to true, it means that PDCP duplication is activated. Indicates that PDCP duplication is activated, or the value of this field is 0, indicating that PDCP duplication is activated.

2) If the first condition and/or the second condition are met, activate PDCP duplication, otherwise deactivate PDCP duplication.

The foregoing preset conditions may be agreed upon by the protocol or configured by the network side. The above-mentioned behaviors can be stipulated by the protocol or configured by the network side. If the protocol stipulates, the above-mentioned behaviors will always be executed. If it is configured by the network side, the network can use the 1-bit field to instruct the UE to perform the above behavior, and the specific example is the same as above. Or the network side configures the foregoing preset conditions, and the terminal executes the foregoing behaviors.

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

The first condition includes at least one of the following:

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

The second condition includes at least one of the following:

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

1) The location information of the terminal.

2) The transmission delay between the terminal and the first network device.

3) The transmission delay between the terminal and the second network device.

4) The distance between the terminal and the third network device.

1) The first condition.

2) The second condition.

The dual connectivity communication method according to the embodiment of the present application has been described in detail above with reference to FIG. 2 . A dual connectivity communication method according to another embodiment of the present application will be described in detail below with reference to FIG. 3 . It can be understood that the interaction between the network-side device and the terminal described from the network-side device is the same as the description on the terminal side in the method shown in FIG. 2 , and related descriptions are appropriately omitted to avoid repetition.

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

S302: The network side device acquires the second message.

S304: The network side device sends target configuration information to the terminal according to the second message.

The target configuration information includes at least one of the following: preset conditions, the preset conditions are used by the terminal to determine to send the first message through the first path or the second path; first configuration information, the first configuration information It is used to instruct the terminal to send a first message associated with the SCG through the first path or the second path, the first message is an uplink RRC message; second configuration information, the second configuration information is used to instruct the terminal Send a first message associated with the MCG through the first path or the second path, the first message is an uplink RRC message; third configuration information, the third configuration information is used to instruct the terminal to pass the first path or the second path Two paths send a first message, where the first message is uplink data; fourth configuration information, where the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication; a first threshold, where the first threshold is used The terminal determines to send the first message through the first path or the second path; the second threshold value is used for the terminal to determine to send the first message through the first path or the second path.

In the dual connection communication method provided by the embodiment of the present application, the network side device sends 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 Activating PDCP replication helps reduce message transmission delay and terminal power consumption in dual connectivity communication.

It should be noted that, the dual-connectivity communication method provided in the embodiment of the present application may be executed by 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, the dual-connectivity communication device provided in the embodiment of the present application is described by taking the dual-connectivity communication device executing the dual-connectivity communication method as an example.

Fig. 4 is a schematic structural diagram of a dual connectivity communication device according to an embodiment of the present application, and the device may correspond to a terminal in other embodiments. As shown in FIG. 4 , the apparatus 400 includes a sending 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 preset conditions.

The dual connectivity communication device provided by the embodiment of the present application preferentially sends the first message through the first path and/or activates or deactivates PDCP replication, which is beneficial to reduce message transmission delay and terminal power consumption in dual connectivity communication.

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

1) In the case that the first message is associated with the SCG, the first message is preferentially sent through the first path, and the first message includes an uplink RRC message.

2) In the case that the first message is associated with the MCG, the first message is preferentially sent through the first path, and the first message includes an uplink RRC message.

3) In the case that PDCP replication is deactivated or the radio bearer is a DAPS bearer, the first message is preferentially sent through the first path, and the first message includes uplink data.

1) When the first message is associated with the SCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message.

2) When the first message is associated with the SCG, sending the first message through a first path according to first configuration information, where the first configuration information is used to indicate a transmission path of the first message associated with the SCG .

3) When the first message is associated with the SCG, configured with the second path, and does not meet the preset conditions, sending the first message through the first path; when the first message is associated with the SCG, configured with the second path , and if the preset condition is met, the device sends the first message through the second path.

1) In the case that the first message is associated with the MCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message.

2) In the case that the first message is associated with the MCG, sending the first message through the first path according to the second configuration information, the second configuration information is used to indicate the transmission path of the first message associated with the MCG .

3) When the first message is associated with the MCG, configured with the first path, and does not meet the preset condition, sending the first message through the first path; when the first message is associated with the MCG, configured with the When the first path is used 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 used for at least one of the following 1) to 4).

1) In the case that PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message.

2) In the case that PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through the first path according to the third configuration information, where the third configuration information is used to indicate the transmission path of the first message .

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

4) In the third case, sending the first message preferentially through the first path; in the fourth case, sending the first message through the first path; wherein, the third case includes: PDCP replication is deactivated or the radio bearer is a DAPS bearer, and the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the second threshold; the fourth case is that the first Circumstances other than the three conditions.

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

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

The device 400 according to the embodiment of the present application can refer to the process of the method 200 corresponding to the embodiment of the present application, and each unit/module in the device 400 and the above-mentioned other operations and/or functions are respectively in order to realize the corresponding process in the method 200, And can achieve the same or equivalent technical effect, for the sake of brevity, no more details are given here.

The dual connectivity communication device in the embodiment of the present application may be a device, a device with an operating system or an electronic device, or a component, an integrated circuit, or a chip in a terminal. The apparatus or electronic equipment may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include but not limited to the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machines or self-service machines, etc., are not specifically limited in this embodiment of the present application.

The dual-connectivity communication device provided in the embodiment of the present application can implement various processes implemented by the method embodiments in FIG. 2 to FIG. 3 , and achieve the same technical effect. To avoid repetition, details are not repeated here.

Fig. 5 is a schematic structural diagram of a dual connectivity communication device according to an embodiment of the present application, and the device may correspond to network-side devices in other embodiments. As shown in FIG. 5 , the device 500 includes the following modules.

The acquiring module 502 may be configured to acquire the second message.

The sending module 504 may be 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 following: preset conditions, the preset conditions are used for the terminal to determine to pass the first path or the second path to send a first message; first configuration information, the first configuration information is used to instruct the terminal to send a 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, the second configuration information is used to instruct the terminal to send a first message associated with the MCG through the first path or the second path, and the first message is an uplink RRC message; the third configuration Information, the third configuration information is used to instruct the terminal to send the first message through the first path or the second path, the first message is uplink data; fourth configuration information, the fourth configuration information is used to indicate The terminal activates or deactivates PDCP replication; the first threshold is used for the terminal to determine to send the first message through the first path or the second path; the second threshold is used for the The terminal determines to send the first message through the first path or the second path.

The dual connectivity communication device provided in the embodiment of the present application sends 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 PDCP replication , which is beneficial to reduce the transmission delay of the message and reduce the power consumption of the terminal in the dual connection communication.

The device 500 according to the embodiment of the present application can refer to the process of the method 300 corresponding to the embodiment of the present application, and each unit/module in the device 500 and the above-mentioned other operations and/or functions are respectively in order to realize the corresponding process in the method 300, And can achieve the same or equivalent technical effect, for the sake of brevity, no more details are given here.

Optionally, as shown in FIG. 6 , this embodiment of the present application further provides a communication device 600, including a processor 601, a memory 602, and programs or instructions stored in the memory 602 and operable on the processor 601, For example, when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each process of the foregoing dual connection communication method embodiment can be implemented, and the same technical effect can be achieved. When the communication device 600 is a network-side device, when the program or instruction is executed by the processor 601, each process of the above dual-connection communication method embodiment can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, the processor is used to activate or deactivate PDCP replication according to a preset condition; the communication interface is used to preferentially send a first message through a first path, and the first The message includes uplink RRC message or uplink data. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 7 is a schematic diagram of a hardware structure of a terminal implementing an 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, and a processor 710, etc. at least some of the components.

Those skilled in the art can understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 710 through the power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 7 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in the embodiment of the present application, the input unit 704 may include a graphics processor (Graphics Processing Unit, GPU) 7041 and a microphone 7042, and the graphics processor 7041 is used for the image capture device ( Such as the image data of the still picture or video obtained by the camera) for processing. 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 called a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, and joysticks, which will not be repeated here.

In the embodiment of the present application, the radio frequency unit 701 receives the downlink data from the network side device, and processes it to the processor 710; in addition, sends the uplink data to the network side device. 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 can be used to store software programs or instructions as well as various data. The memory 709 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instructions required by at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 709 may include a high-speed random access memory, and may also include a non-transitory memory, wherein the non-transitory memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one disk storage device, flash memory device, or other non-transitory solid state storage device.

The processor 710 may include one or more processing units; optionally, the processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs or instructions, etc., Modem processors mainly handle wireless communications, such as baseband processors. It can be understood that the foregoing modem processor may not be integrated into the processor 710 .

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

The processor 710 may be configured to activate or deactivate PDCP replication according to preset conditions.

In the embodiment of the present application, the terminal preferentially sends the first message and/or activates or deactivates PDCP replication through the first path, which is beneficial to reduce message transmission delay and terminal power consumption in dual connectivity communication.

The terminal 700 provided in the embodiment of the present application can also implement various processes in the above embodiment of the dual connectivity communication method, and can achieve the same technical effect. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a network side device, including a processor and a communication interface, where the processor is used to obtain a second message, and the communication interface is used to send target configuration information to a terminal according to the second message, and the The target configuration information includes at least one of the following: preset conditions, the preset conditions are used by the terminal to determine to send the first message through the first path or the second path; first configuration information, the first configuration information is used for Instructing the terminal to send a first message associated with the SCG through the first path or the second path, the first message is an uplink RRC message; second configuration information, the second configuration information is used to instruct the terminal to pass the first A path or a second path sends a first message associated with the MCG, the first message is an uplink RRC message; third configuration information, the third configuration information is used to instruct the terminal to pass through the first path or the second path Sending a first message, where the first message is uplink data; fourth configuration information, where the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication; a first threshold, where the first threshold is used for all The terminal determines to send the first message through the first path or the second path; the second threshold value is used for the terminal to determine to send the first message through the first path or the second path.

The network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 8 , the network side device 800 includes: an antenna 81 , a radio frequency device 82 , and a baseband device 83 . The antenna 81 is connected to a radio frequency device 82 . In the uplink direction, the radio frequency device 82 receives information through the antenna 81, and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82 , and the radio frequency device 82 processes the received information and sends it out through the antenna 81 .

The foregoing frequency band processing device may be located in the baseband device 83 , and the method performed by the network side device in the above embodiments may be implemented in the baseband device 83 , and the baseband device 83 includes a processor 84 and a memory 85 .

Baseband device 83 for example can comprise at least one baseband board, and this baseband board is provided with a plurality of chips, as shown in Fig. The operation of the network side device shown in the above method embodiments.

The baseband device 83 may also include a network interface 86 for exchanging information with the radio frequency device 82, such as a common public radio interface (CPRI for short).

Specifically, the network-side device in this embodiment of the present application also includes: instructions or programs stored in the memory 85 and operable on the processor 84, and the processor 84 calls the instructions or programs in the memory 85 to execute the modules shown in FIG. 5 To avoid duplication, the method of implementation and to achieve the same technical effect will not be repeated here.

The embodiment of the present application also provides a readable storage medium, the readable storage medium may be nonvolatile or volatile, the readable storage medium stores programs or instructions, and the programs or instructions are stored in When executed by the processor, each process of the above embodiment of the dual connection communication method can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Wherein, the processor may be the processor in the terminal described in the foregoing embodiments. The readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the above-mentioned embodiment of the dual connection communication method Each process, and can achieve the same technical effect, in order to avoid repetition, will not repeat them here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

An embodiment of the present application further provides a computer program product, 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 the above-mentioned dual connection communication method embodiment. Each process can achieve the same technical effect, so in order to avoid repetition, it will not be repeated here.

The embodiment of the present application further provides a communication device, which is configured to execute each process of the above-mentioned embodiment of the dual-connection communication method, and can achieve the same technical effect. To avoid repetition, details are not repeated here.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on this understanding, the essence of the technical solution of this application or the part that contributes to related technologies can be embodied in the form of computer software products, which are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network side device, etc.) execute the methods described in the various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

A dual connection communication method, comprising: the terminal performs at least one of the following:

sending a first message preferentially through a first path, where the first message includes an uplink radio resource control RRC message or uplink data;

Activate or deactivate packet data convergence protocol PDCP replication according to preset conditions.
The method according to claim 1, wherein the preferentially sending the first message through the first path includes at least one of the following:

In the case that the first message is associated with the secondary cell group SCG, sending the first message preferentially through the first path, where the first message includes an uplink RRC message;

In the case that the first message is associated with the main cell group MCG, the first message is preferentially sent through the first path, and the first message includes an uplink RRC message;

In a case where PDCP replication is deactivated or the radio bearer is a dual-activation protocol stack DAPS bearer, the first message is preferentially sent through the first path, and the first message includes uplink data.
The method of claim 2, wherein,

The association of the first message with the SCG includes at least one of the following: the configuration information that triggers the first message is related to the SCG; the first message is used to notify the network side device of the failure of the SCG RLC bearer; and/or

The association between the first message and the MCG includes at least one of the following: the configuration information triggering the first message is related to the MCG; the first message is used to notify the network side device of the failure of the MCG RLC bearer.
The method according to claim 2, wherein when the first message is associated with the SCG, sending the first message preferentially through the first path includes at least one of the following:

When the first message is associated with the SCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message;

When the first message is associated with the SCG, sending the first message through a first path according to first configuration information, where the first configuration information is used to indicate a transmission path of the first message associated with the SCG;

When the first message is associated with the SCG, configured with the second path, and does not meet the preset condition, sending the first message through the first path; when the first message is associated with the SCG, configured with the second path, and When the preset condition is met, the terminal sends the first message through the second path.
The method according to claim 4, wherein the first path comprises a transmission path between the terminal and the MCG, and the second path comprises a transmission path between the terminal and the SCG.
The method according to claim 4 or 5, wherein,

The first path includes a signaling radio bearer SRB1, the second path includes SRB3; and/or

The transmission delay of the first path is smaller than the transmission delay of the second path.
The method according to claim 2, wherein when the first message is associated with the MCG, sending the first message preferentially through the first path includes at least one of the following:

When the first message is associated with the MCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message;

When the first message is associated with the MCG, sending the first message through a first path according to second configuration information, where the second configuration information is used to indicate a transmission path of the first message associated with the MCG;

If the first message is associated with the MCG and configured with the first path and does not meet the preset condition, sending the first message through the first path; when the first message is associated with the MCG and configured with the first path In a case where a path meets a preset condition, the terminal sends the first message through the second path.
The method according to claim 7, wherein the first path comprises a transmission path between the terminal and the SCG, and the second path comprises a transmission path between the terminal and the MCG.
The method according to claim 7 or 8, wherein,

The first path includes SRB3 and the second path includes SRB1; and/or

The transmission delay of the first path is smaller than the transmission delay of the second path.
The method according to claim 2, wherein, when the PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message preferentially through the first path includes at least one of the following:

When PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message;

When PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through the first path according to third configuration information, where the third configuration information is used to indicate the transmission path of the first message;

In the first case, the first message is sent through the first path or the second path; in the second case, the first message is sent through the first path; wherein, the first case includes: PDCP The replication deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the first threshold, and meets the preset condition; the second case is a circumstance other than the first circumstance;

In the third case, the first message is preferentially sent through the first path; in the fourth case, the first message is sent through the first path; wherein, the third case includes: PDCP replication Deactivation or the radio bearer is a DAPS bearer, and the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the second threshold; the fourth case is the third case outside of the situation.
The method according to claim 10, wherein the preferentially sending the first message through the first path comprises:

When the amount of data sent by the first path reaches the maximum value, then send the first message through the second path.
A method according to claim 10 or 11, wherein,

When the transmission delay between the terminal and the MCG is less than the transmission delay between the terminal and the SCG, the first path is the transmission path between the terminal and the MCG, and the second path is the transmission path between the terminal and the SCG transmission path; and/or

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 the transmission path between the terminal and the SCG, and the second path is the transmission path between the terminal and the SCG. MCG transmission path.
The method of claim 12, wherein,

In the case that the transmission delay between the terminal and the MCG is less 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; and/or

In the case 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 a secondary RLC entity, and the second path is a primary RLC entity.
The method according to claim 1, wherein, according to preset conditions, activating or deactivating PDCP replication includes at least one of the following:

Activate or deactivate PDCP replication according to fourth configuration information; wherein, the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication;

The PDCP replication is activated when the preset condition is met, and the PDCP replication is deactivated when the preset condition is not met.
The method according to claim 1, 4, 7 or 10, wherein the preset conditions include at least one of the following:

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

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

The distance between the terminal and the first network device is less than or equal to a fifth threshold;

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

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

The measurements of the first group of cells are less than or equal to the ninth threshold for the first time.
The method according to claim 1, 4, 7 or 10, wherein the preset conditions include at least one of the following:

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

the measurement of the second group of cells is better than the measurement of the first group of cells by the first offset value;

the measurement of the second group of cells is better than an eleventh threshold;

The measurement of the first group of cells is below a twelfth threshold, and the measurement of the second group of cells is better than a thirteenth threshold.
The method according to claim 15 or 16, wherein 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.
The method according to claim 1, wherein the method further comprises: the terminal sending a second message, the second message including at least one of the following:

location information of the terminal;

The transmission delay between the terminal and the first network device;

The transmission delay between the terminal and the second network device;

the distance between the terminal and the third network device;

The transmission delay between the terminal and the third network device.
The method according to claim 18, wherein the method further comprises: the terminal acquiring target configuration information, and the target configuration information includes at least one of the following:

The preset condition, the preset condition is used for the terminal to determine to send the first message 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, where 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 the MCG through the first path or the second path, where 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, where the first message is uplink data;

Fourth configuration information, where the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication;

a first threshold, where the first threshold is used by 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 by the terminal to determine to send the first message through the first path or the second path.
A dual connectivity communication method comprising:

The network side device obtains the second message;

The network side device sends target configuration information to the terminal according to the second message, where the target configuration information includes at least one of the following:

a preset condition, the preset condition is used for the terminal to determine to send the first message through the first path or the second path;

First configuration information, where the first configuration information is used to instruct the terminal to send a first message associated with the SCG through the first path or the second path, where 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 the MCG through the first path or the second path, where 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, where the first message is uplink data;

Fourth configuration information, where the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication;

a first threshold, where the first threshold is used by 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 by the terminal to determine to send the first message through the first path or the second path.
A dual connectivity communication device comprising:

A sending module, configured to preferentially send a first message 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 preset conditions.
The device according to claim 21, wherein the sending module is used for at least one of the following:

If the first message is associated with the SCG, sending the first message preferentially through the first path, where the first message includes an uplink RRC message;

In the case that the first message is associated with the MCG, preferentially send the first message through the first path, where the first message includes an uplink RRC message;

In a case where PDCP replication is deactivated or the radio bearer is a DAPS bearer, the first message is preferentially sent through the first path, where the first message includes uplink data.
The method according to claim 22, wherein the sending module is used for at least one of the following:

When the first message is associated with the SCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message;

When the first message is associated with the SCG, sending the first message through a first path according to first configuration information, where the first configuration information is used to indicate a transmission path of the first message associated with the SCG;

When the first message is associated with the SCG, configured with the second path, and does not meet the preset condition, sending the first message through the first path; when the first message is associated with the SCG, configured with the second path, and When the preset condition is met, the apparatus sends the first message through the second path.
The device according to claim 22, wherein the sending module is used for at least one of the following:

When the first message is associated with the MCG, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message;

When the first message is associated with the MCG, sending the first message through a first path according to second configuration information, where the second configuration information is used to indicate a transmission path of the first message associated with the MCG;

If the first message is associated with the MCG and configured with the first path and does not meet the preset condition, sending the first message through the first path; when the first message is associated with the MCG and configured with the first path When a path meets a preset condition, the device sends the first message through the second path.
The device according to claim 22, wherein the processing module is used for at least one of the following:

When PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through a first path according to a predefined rule, where the predefined rule is used to define a transmission path of the first message;

When PDCP replication is deactivated or the radio bearer is a DAPS bearer, sending the first message through the first path according to third configuration information, where the third configuration information is used to indicate the transmission path of the first message;

In the first case, the first message is sent through the first path or the second path; in the second case, the first message is sent through the first path; wherein, the first case includes: PDCP The replication deactivation or radio bearer is a DAPS bearer, the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the first threshold, and meets the preset condition; the second case is a circumstance other than the first circumstance;

In the third case, the first message is preferentially sent through the first path; in the fourth case, the first message is sent through the first path; wherein, the third case includes: PDCP replication Deactivation or the radio bearer is a DAPS bearer, and the sum of the total data volume of PDCP and the RLC data volume waiting for initial transmission of the first path and the second path is greater than or equal to the second threshold; the fourth case is the third case other than the situation.
The device according to claim 21, wherein the processing module is used for at least one of the following:

Activate or deactivate PDCP replication according to fourth configuration information; wherein, the fourth configuration information is used to instruct the device to activate or deactivate PDCP replication;

The PDCP replication is activated when the preset condition is met, and the PDCP replication is deactivated when the preset condition is not met.
A dual connectivity communication device comprising:

An acquisition module, configured to acquire the second message;

A sending module, 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 following:

a preset condition, the preset condition is used for the terminal to determine to send the first message through the first path or the second path;

First configuration information, where the first configuration information is used to instruct the terminal to send a first message associated with the SCG through the first path or the second path, where 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 the MCG through the first path or the second path, where 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, where the first message is uplink data;

Fourth configuration information, where the fourth configuration information is used to instruct the terminal to activate or deactivate PDCP replication;

a first threshold, where the first threshold is used by 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 by the terminal to determine to send the first message through the first path or the second path.
A terminal, comprising a processor, a memory, and a program or instruction stored in the memory and operable on the processor, when the program or instruction is executed by the processor, any of claims 1 to 19 can be realized. A dual connectivity communication method as described in one item.
A network side device, comprising a processor, a memory, and a program or instruction stored on the memory and operable on the processor, when the program or instruction is executed by the processor, the implementation of claim 20 The dual connectivity communication method described above.
A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the processor of the terminal, the dual connection communication method according to any one of claims 1 to 19 is implemented, or When executed by the processor of the network side device, the dual connection communication method according to claim 20 is realized.
A computer program product, the computer program product is stored in a non-transitory storage medium, and when the computer program product is executed by the processor of the terminal, the dual connection communication according to any one of claims 1 to 19 is realized method, or implement the dual connectivity communication method as claimed in claim 20 when executed by the processor of the network side device.