CN114071604A

CN114071604A - Data transmission method, device, apparatus and storage medium

Info

Publication number: CN114071604A
Application number: CN202010779735.4A
Authority: CN
Inventors: 徐敏
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2022-02-18
Anticipated expiration: 2040-08-05
Also published as: CN114071604B; WO2022028477A1

Abstract

The embodiment of the application discloses a data transmission method, which is applied to user equipment, wherein the user equipment is in a double-connection DC state, and the method comprises the following steps: receiving configuration information; and if the auxiliary cell group SCG is in the auxiliary cell group Suspension SCG Suspension state, switching the service data from the auxiliary cell group SCG to the main cell group MCG for transmission according to the configuration information. By adopting the invention, the time delay and the energy consumption of the data transmission of the user equipment can be reduced.

Description

Data transmission method, device, apparatus and storage medium

Technical Field

The present invention relates to the field of communications, and in particular, to a data transmission method, device, apparatus, and storage medium.

Background

From the UE (User Equipment), a Dual Connectivity (DC) scenario involves three different Bearer types, which are MCG Bearer (Master Cell Group Bearer), SCG Bearer (Secondary Cell Group Bearer), and Split Bearer (Split Bearer). From the network side, the three bearers can be Terminated at either the MN (MN Terminated) or the SN (SN Terminated). Wherein, MN Terminated beacons (bearer Terminated at MN) terminates at MN (Master Node) for CN (Core Network) user plane connection, i.e. PDCP (Packet Data Convergence Protocol) layer is at MN; SN Terminated Bearers are Terminated at the SN (Secondary Node, Secondary base station) for CN user plane connections, i.e. the PDCP layer is at the SN. In the Uu user plane, for different bearer types, the MCG or SCG resources are related, that is, for MCG beacons, only MCG radio resources are related; for SCG beacons, only SCG radio resources will be relevant; for Split Bearer, both MCG radio resources and SCG radio resources will be relevant. The Split Bearer includes a Bearer of an MCG (Master Cell Group) branch (leg) and a Bearer of an SCG (Secondary Cell Group) branch (leg).

Currently, in the case of an SCG in a suspended state, if there is traffic data to be transmitted on a Bearer of an SCG Bearer or an SCG branch configured in a Split Bearer form, a series of network configurations are required to activate the SCG, such as: the service data can be transmitted only after the TA (Timing Advance) maintenance, Beam management, channel quality reporting and the like of the PSCell (Primary SCG Cell, Primary and secondary Cell) are completed, and the time delay and energy consumption for transmitting the service data are increased.

Disclosure of Invention

Embodiments of the present application provide a data transmission method, device, apparatus, and storage medium, which can reduce time delay and energy consumption for transmitting service data.

In order to solve the foregoing technical problem, in a first aspect, an embodiment of the present application provides a data transmission method, which is applied to a user equipment, where the user equipment is in a dual-connection DC state, and the method includes:

receiving configuration information;

and if the auxiliary cell group SCG is in the auxiliary cell group Suspension SCG Suspension state, switching the service data from the auxiliary cell group SCG to the main cell group MCG for transmission according to the configuration information.

In a second aspect, an embodiment of the present application further provides a data transmission method, which is applied to a network device, and the method includes:

and sending configuration information to enable the user equipment in the double-connection DC state to execute the transmission of service data switched from the auxiliary cell group SCG to the main cell group MCG according to the configuration information if the auxiliary cell group SCG is in the auxiliary cell group Suspension SCG Suspension state.

In a third aspect, an embodiment of the present application further provides a data transmission device, where the data transmission device includes: a storage device and a processor, wherein the processor is capable of,

the storage device is used for storing program codes;

the processor, when invoking the stored code, is configured to perform the data transmission method according to the first aspect.

In a fourth aspect, an embodiment of the present application further provides a data transmission device, where the data transmission device includes: a storage device and a processor, wherein the processor is capable of,

the storage device is used for storing program codes;

the processor, when invoking the stored code, is configured to perform the data transmission method according to the second aspect.

In a fifth aspect, an embodiment of the present application further provides a data transmission apparatus, where the data transmission apparatus is applied to a user equipment, and the user equipment is in a dual-connection DC state, where the data transmission apparatus includes:

the receiving module is used for receiving the configuration information;

and the switching module is used for switching the service data from the auxiliary cell group SCG to the main cell group MCG for transmission according to the configuration information if the auxiliary cell group SCG is in the auxiliary cell group Suspension SCG Suspension state.

In a sixth aspect, an embodiment of the present application further provides a data transmission apparatus, where the data transmission apparatus includes:

and the sending module is used for sending configuration information so that the user equipment carries out the transmission of the service data switched from the SCG of the auxiliary cell group to the MCG of the main cell group according to the configuration information if the SCG of the auxiliary cell group is in the SCG Suspension state.

In a seventh aspect, this application embodiment further provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program enables a computer to execute the data transmission method in the first aspect.

In an eighth aspect, the present invention further provides a computer-readable storage medium for storing a computer program, where the computer program makes a computer execute the data transmission method according to the second aspect.

The embodiment of the application has the following beneficial effects:

when the SCG of the auxiliary cell group is in the SCG Suspension state, the user equipment can automatically switch the service data from the SCG of the auxiliary cell group to the MCG of the main cell group for transmission according to the configuration information, thereby reducing the time delay and energy consumption of the data transmission of the user equipment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a scene diagram of a data transmission method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

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

fig. 4 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of another data transmission device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," "third," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, fig. 1 is a scene diagram of a data transmission method according to an embodiment of the present application. As shown in fig. 1, in this data transmission scenario, a user equipment 101 is in a Dual-Connectivity (DC) state, and communicates with an MN (MeNB, master base station) 102 and an SN (SeNB, secondary base station) 103, the MN 102 communicates with the SN103, and both the MN 102 and the SN103 can communicate with a core network 104. MN 102 sends SCG subscription requuse (secondary cell group Suspension request) to SN 103; the SN103 makes the SCG (Secondary Cell Group) in the SCG Suspension state according to the received SCG Suspension request, and feeds back information of SCG Suspension Complete to the MN 102; the MN 102 sends Indication to Suspend SCG (Indication of suspended secondary cell) to the user equipment according to the information of SCG Suspension Complete; the user equipment enters an SCG Suspend state according to Indication to Suspend SCG, the PSCell (Primary SCG Cell, Primary and Secondary cells) configures a long-period DRX (Discontinuous Reception), and each Scell (Secondary Cell ) is in a dormant state.

The network device may configure the ue to enter or leave the SCG suspend state through an RRC (Radio Resource Control) message, or may instruct the ue to enter or leave the SCG suspend state through a MAC CE (Media Access Control Element) or a Lower Layer Indication. The Lower Layer Indication may be PHY (physical Layer) Indication Information, DCI (Downlink Control Information), or the like.

In the embodiment of the present application, the SCG Suspension may be SN or SCG deactivation, or SN or SCG Suspension.

In this embodiment, for a user equipment side, when an SCG is in an SCG subset state, if there is service data that needs Bearer transmission of an SCG Bearer (Secondary Cell Group Bearer) or an SCG branch (leg) configured in a Split Bearer (Split Bearer) form, that is, there is service data that needs to be transmitted through an SCG radio resource, the service data is transmitted by switching an MCG (Master Cell Group) from the SCG according to configuration information sent by the received network device, that is, the user equipment sends the service data to MN 102 first, and then the MN 102 forwards the service data to the SN103, and then the SN103 sends the service data to the core network 104.

It should be noted that, at present, the Split Bearer can configure the SCG branch or the MCG branch into a main Path (Primary Path), that is, if the data volume that the user equipment needs to transmit is smaller than the threshold of the data volume to be transmitted, the user equipment only transmits the service data on the main Path; in a case that the SCG is in the SCG subset state, the carrying of the SCG branch configured in the Split Bearer form for transmitting the service data refers to configuring the SCG branch of the Split Bearer as a main path, that is, if a data amount that the user equipment needs to transmit is less than a threshold of a data amount to be transmitted, the user equipment only transmits the service data on the SCG branch of the Split Bearer, that is, the SCG needs to be activated, for example: the service data can be transmitted only after the TA (Timing Advance) maintenance, Beam management, channel quality reporting and the like of the PSCell are completed, so that the time delay and energy consumption of data transmission are increased.

In the embodiment of the present application, when the SCG is in the SCG subset state, if there is service data that needs to be carried and transmitted by a SCG Bearer (Secondary Cell Group Bearer) or a SCG branch (leg) configured in a Split Bearer (Split Bearer) form, the SCG is not activated, but the service data is transmitted by switching from the SCG to the MCG, so that delay and energy consumption for transmitting the service data due to activation of the SCG are avoided.

The service Data is switched from SCG to MCG, that is, the service Data is switched from SN103 to MN 102 for transmission, and then the service Data is switched from the SCG branch Bearer of SCG Bearer and/or Split Bearer to the MCG branch Bearer of MCG Bearer and/or Split Bearer for transmission, that is, RLC (Radio Link Control, Radio Link Control sublayer) Bearer is switched from SCG to MCG, or PDCP (Packet Data Convergence Protocol) routing rule indicates that the Data Packet is switched from SN103 RLC to MN 102RLC for transmission according to the configuration information, or the service Data is switched from using SCG Radio resources to using MCG Radio resources for transmission. The number of the related bearers for transmitting the service data required to be transmitted in the SCG may be one or more. In the embodiments of the present application, the plurality means at least two.

In the embodiment of the present application, the network device includes MN 102 and SN 103. The configuration information can be sent to the SN103 by the core network 104, directly sent to the user equipment by the SN103 or sent to the user equipment by the SN103 through the MN 102; the configuration information can be configured by the MN 102 and sent to the user equipment; the configuration information may also be configured by the SN103 and sent to the user equipment through the MN 102, or configured by the SN103 and sent to the user equipment, and the network device may also configure or send the configuration information to the user equipment through other manners, where the manner in which the network device configures or sends the configuration information to the user equipment is not limited.

In an embodiment of the present application, the configuration information may include: handover conditions, and/or radio resource configuration information. The radio resource configuration information includes SCG radio resource configuration information and MCG radio resource configuration information of the auxiliary cell group, and/or the radio resource configuration information includes Split Bearer allocation information.

In the embodiment of the present application, if the configuration information includes: and if the switching condition is met, the network equipment instructs the user equipment to execute the following steps through the configuration information: and if the switching condition is determined to be met, switching the service data from the auxiliary cell group SCG to the master cell group MCG for transmission.

It should be noted that the configuration information may be used to instruct the ue to perform, if the SCG is in the suspend state, switching the service data from the secondary cell group SCG to the master cell group MCG for transmission, and further the configuration information may not carry a switching condition.

In the embodiment of the present application, if the configuration information includes: the SCG wireless resource configuration information of the auxiliary cell group and the MCG wireless resource configuration information of the main cell group are used for indicating the user equipment to use the SCG wireless resource of the auxiliary cell group to transmit the service data or use the MCG wireless resource of the main cell group to transmit the service data. Specifically, while configuring one or more radio bearers related to the transmission of the service data as an SCG bearer, the network device increases an MCG bearer corresponding to the SCG bearer, and instructs the user equipment to transmit the service data only through one of the SCG bearer and the MCG bearer.

In an embodiment of the present application, the configuration information includes: separating and bearing Split Bearer configuration information; the configuration information is used to instruct the ue to transmit service data using the SCG radio resource of the secondary cell group or transmit service data using the MCG radio resource of the primary cell group, that is, the Split Bearer configuration information indicates to configure a specially configured Split Bearer, and the specially configured Split Bearer is configured to transmit service data only through one of the SCG radio resource and the MCG radio resource. Wherein the Split Bearer configuration information comprises: secondary cell group SCG radio resource configuration information and master cell group MCG radio resource configuration information.

In this embodiment, for one or more radio bearers, the configuration information may include one or more Split Bearer configuration information, that is, each radio Bearer corresponds to one Split Bearer configuration information. The network device may add indication information in Split Bearer configuration information of any radio Bearer configuration, where the indication information is used to indicate the user equipment to transmit service data using the SCG radio resource of the secondary cell group or to transmit service data using the MCG radio resource of the primary cell group, that is, to indicate that service data is transmitted only through one of the SCG radio resource and the MCG radio resource.

Further, the network equipment instructs the user equipment to switch the service data from the auxiliary cell group SCG to the master cell group MCG to transmit the service data through the MCG radio resource under the condition that the service data needing to be transmitted through the SCG radio resource exists; however, when the handover condition in the configuration information is not satisfied, and/or the handover condition is satisfied, and/or the condition for activating the secondary cell group is satisfied, and/or the user equipment receives the first indication information sent by the network equipment, the user equipment transmits the service data through the SCG, that is, activates the SCG, so that the PSCell is in an Activated state and is not in a dormant state, and thus the service data is transmitted through the SCG.

Specifically, the MN 102 sends an SCG Activation Request (SCG Activation Request) to the SN 103; the SN103 activates the SCG according to the SCG Activation Request, and feeds back information of SCG Activation Complete (the Activation of the auxiliary cell group is completed) to the MN 102; the MN 102 sends Indication to Activation SCG (Indication of activated secondary cell) to the user equipment according to the information of SCG Activation Complete; the user equipment enters an SCG Activation state according to the Indication to Activation SCG, and if the TA (Timing Advance) is not maintained, the user equipment initiates a random access process in the PScell to communicate with the SN so as to transmit service data.

It should be noted that, if the SCell (or PSCell) is in a Deactivated state, the ue cannot perform operations such as transmitting service data, receiving a reference signal, performing measurement reporting, and the like on the SCell (or PSCell); if the SCell (or the PSCell) is Activated and not in the dormant state, transmitting the traffic data at the SCell (or the PSCell); if the SCell (or PSCell) is in the dormant State, the ue may perform CSI (Channel State Information) measurement and/or Beam management on the SCell (or PSCell), but may not transmit traffic data. Wherein, Activated introduces a dormant state, mainly for energy saving and fast recovery of data transmission of the SCell (or PSCell).

Further, when receiving DL (DownLink) data to be transmitted, the network device may also determine not to activate SCG according to a switching condition or according to an actual transmission condition of the network device, and forward the DL data to MN 102 through SN103 for scheduling. The network device may receive DL data to be transmitted to the user equipment, which is sent by the core network 104.

In this embodiment of the present application, if the secondary cell group SCG is not in the secondary cell group Suspension SCG suspend state, the ue and the network device both transmit service data through the SCG for the configured SCG Bearer or the specially configured Split Bearer, that is, transmit service data through the SN103, that is, transmit service data through the SCG radio resource, or transmit service data through the Bearer of the SCG branch in the SCG Bearer or the Split Bearer.

In the embodiment of the present application, the user Equipment includes, but is not limited to, an access Terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote Terminal, a Mobile device, a user Terminal, a Terminal device (Terminal Equipment), a wireless communication device, a user agent, or a user Equipment. The user equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like.

In the embodiment of the application, the user equipment communicates with the MN 102 through a Uu interface, the user equipment communicates with the SN103 through the Uu interface, and the MN 102 communicates with the SN103 through an Xn interface.

In the embodiment of the application, the dual connection scene where the user equipment is located comprises a same-frequency scene and a different-frequency scene; at least two cells accessed by the user equipment are different gNB (devices providing base station function by 5G new air interface technology). Dual Connectivity can be classified into MR-DC (Muti-RAT Dual Connectivity) with EPC (4G core network) and MR-DC with 5GC (5G core network) according to the connection of the gNB to different core networks.

In the MR-DC with EPC, MN is a EUTRA base station (4G base station), SN is an NR (New Radio, New air interface) base station, and a corresponding core network is EPC. The MR-DC with 5GC includes two categories of NG-RAN E-UTRA-NR Dual Connectivity (NG-RAN 4G &5G Dual Connectivity) and NR-E-UTRA Dual Connectivity (5G &4G Dual Connectivity). In the NG-RAN E-UTRA-NR Dual Connectivity, MN is an EUTRA base station, SN is an NR base station, and a corresponding core network is 5 GC. In the NR-E-UTRA Dual Connectivity, MN is an NR base station, SN is an EUTRA base station, and the corresponding core network is 5 GC.

Referring to fig. 2, fig. 2 is a flow chart of a data transmission method provided in an embodiment of the present application, and the present specification provides the method operation steps as described in the embodiment or the flow chart, but may include more or less operation steps based on conventional or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. In the actual execution of the terminal or the storage medium product, the methods according to the embodiments or shown in the drawings can be executed sequentially or in parallel. As shown in fig. 2 in detail, the data transmission method is applied to a user equipment, where the user equipment is in a dual-connection DC state, and the method includes:

s201: configuration information is received.

If the secondary cell group SCG is in the secondary cell group Suspension SCG Suspension state, step S202 is executed.

S202: and switching the service data from the auxiliary cell group SCG to the main cell group MCG according to the configuration information for transmission.

In the embodiment of the application, when the SCG of the auxiliary cell group is in the SCG Suspension state, the user equipment can automatically switch the service data from the SCG of the auxiliary cell group to the MCG of the main cell group for transmission according to the configuration information, thereby reducing the time delay and energy consumption of data transmission of the user equipment.

Correspondingly, an embodiment of the present application further provides another data transmission method, where the data transmission method is applied to a network device, and the method includes:

s21: and sending configuration information to enable the user equipment in the double-connection DC state to execute the transmission of service data switched from the auxiliary cell group SCG to the main cell group MCG according to the configuration information if the auxiliary cell group SCG is in the auxiliary cell group Suspension SCG Suspension state.

In the embodiment of the application, the network equipment sends the configuration information to the user equipment, so that the user equipment can automatically switch the service data from the SCG of the auxiliary cell group to the MCG of the main cell group for transmission according to the configuration information when the SCG of the auxiliary cell group is in the SCG Suspension state of the auxiliary cell group, and the time delay and the energy consumption of the data transmission of the user equipment are reduced.

Referring to fig. 3, fig. 3 is a schematic diagram of an interactive flow of a data transmission method provided in an embodiment of the present application, and the present specification provides the method operation steps described in the embodiment or the flowchart, but may include more or less operation steps based on conventional or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. In the actual execution of the terminal or the storage medium product, the methods according to the embodiments or shown in the drawings can be executed sequentially or in parallel. As shown in fig. 3 in detail, the method includes:

s301: and the network equipment sends configuration information so that the user equipment in the double-connection DC state executes the transmission of service data switched from the auxiliary cell group SCG to the main cell group MCG according to the configuration information if the auxiliary cell group SCG is in the auxiliary cell group Suspension SCG Suspension state.

In an embodiment of the present application, the configuration information includes: switching conditions;

the configuration information is used for instructing the user equipment to perform the switching of the service data from the secondary cell group SCG to the master cell group MCG for transmission if the switching condition is determined to be satisfied.

In this embodiment of the present application, the configuration information is used to instruct the ue to perform, if the SCG is in a suspended state, switching service data from the secondary cell group SCG to the master cell group MCG for transmission. In this case, the configuration information may not carry the handover condition.

In an embodiment of the present application, the configuration information includes: SCG wireless resource configuration information of the auxiliary cell group and MCG wireless resource configuration information of the main cell group;

the configuration information is used for indicating the user equipment to transmit service data by using SCG radio resources of the auxiliary cell group or to transmit service data by using MCG of the main cell group.

In this embodiment of the present application, the configuration information includes Split Bearer configuration information;

the Split Bearer configuration information comprises: SCG wireless resource configuration information of the auxiliary cell group and MCG wireless resource configuration information of the main cell group;

the configuration information is used for indicating the user equipment to transmit the service data by using the SCG radio resource of the auxiliary cell group or the MCG radio resource of the main cell group.

In the embodiment of the present application, the configuration information is carried by a radio resource control RRC reconfiguration message, and the network device sends the RRC reconfiguration message to the user equipment, that is, the configuration information is sent to the user equipment.

S302: the user equipment receives configuration information.

Wherein the user equipment is in a dual-connection DC state.

S303: and the network equipment sends second indication information so that the user equipment activates or uses the configuration information according to the second indication information.

The second indication information is used for indicating that the secondary cell group SCG is in a secondary cell group Suspension SCG Suspension state.

It should be noted that step S303 may be executed simultaneously with step S301, and is not limited to being executed after step S301.

S304: the user equipment receives the second indication information.

It should be noted that step S304 may be executed simultaneously with step S302, and is not limited to being executed after step S302.

S305: and the user equipment activates or uses the configuration information according to the second indication information.

If the secondary cell group SCG is in the secondary cell group Suspension SCG Suspension state, step S306 is executed.

Wherein, the SCG of the auxiliary cell group is in the SCG Suspension state, and the PSCell and the cells of all SCGs are in the state of being unable or not suitable for transmitting service data. The state unsuitable for transmitting the service data refers to a state without auxiliary information for transmitting the service data or other states incapable of transmitting the service data.

S306: and the user equipment switches the service data from the auxiliary cell group SCG to the main cell group MCG according to the configuration information for transmission.

Specifically, the user equipment switches the service data from the auxiliary cell group SCG to the master cell group MCG for transmission according to the activated configuration information, or the user equipment triggers to execute the switching of the service data from the auxiliary cell group SCG to the master cell group MCG for transmission when the second indication information indicates that the configuration information is used.

In an embodiment of the present application, the configuration information includes: when switching conditions; and if the switching condition is determined to be met, the user equipment switches the service data from the auxiliary cell group SCG to the main cell group MCG for transmission.

Wherein, in case that the configuration information includes a handover condition, the configuration information may not include secondary cell group SCG radio resource configuration information and primary cell group MCG radio resource configuration information, and/or the configuration information may not include Split Bearer configuration information.

In this embodiment of the present application, the determining that the handover condition is satisfied includes any one of the following steps:

if the service data volume of the user equipment is smaller than a data volume threshold, determining that the switching condition is met;

and if the frequency of the user equipment for receiving the service data packet to be transmitted is less than the frequency threshold, determining that the switching condition is met.

The determining whether the service data volume of the user equipment is smaller than the data volume threshold may be: counting the service data volume of the user equipment in a time period with preset duration, and judging whether the counted service data volume is smaller than a data volume threshold or not; it can also be: and counting the service data volume of the current time frame or the current moment in real time, and judging whether the counted service data volume is smaller than a data volume threshold or not.

In the embodiment of the present application, the same preset duration may be set for all SCG bearers and/or specially configured Split bearers, for example: defining a timer, wherein the timer can time the same preset time length for each SCG Bearer and/or specially configured Split Bearer; preset time duration can also be set for each bearer, for example: respectively defining a timer for each bearer, wherein each timer respectively times a preset time length for the corresponding bearer; the Timer may be a MAC Timer (Media Access Control Timer), or may be other types of timers, which are not limited herein.

The receiving of the service data packet to be transmitted by the user equipment means that the user equipment receives the service data packet to be transmitted to the network equipment. Specifically, the user equipment may receive a service data packet sent by a higher layer, such as: a service data packet sent by an application layer, or: the user equipment may receive a service packet of NAS (Non-Access Stratum), and the like, to transmit the received service packet to the network device in the following.

The frequency of receiving the service data packets to be transmitted by the user equipment refers to the number of the service data packets to be transmitted received by the user equipment in unit time.

In the embodiment of the application, by configuring the switching condition, when the SCG Bearer has a small amount of service data to be transmitted, the service data can be switched from the SCG of the auxiliary cell group to the MCG of the main cell group for transmission according to the switching condition, so that the SCG resource overhead is saved, and the time delay and the energy consumption of the data transmission of the user equipment are reduced.

In the embodiment of the present application, when the configuration information includes the secondary cell group SCG radio resource configuration information and the master cell group MCG radio resource configuration information, if the user equipment has service data that needs to be transmitted through the SCG radio resource, the service data is switched from the secondary cell group SCG to the master cell group MCG for transmission, that is, the service data is switched from the SCG radio resource to the MCG radio resource for transmission.

Wherein, in case that the configuration information includes secondary cell group SCG radio resource configuration information and master cell group MCG radio resource configuration information, the configuration information may not include a handover condition.

In this embodiment of the present application, when the configuration information includes Split Bearer configuration information, if the ue has service data that needs to be transmitted through the SCG radio resource, the service data is switched from the secondary cell group SCG to the master cell group MCG for transmission, that is, the service data is switched from the SCG radio resource to the MCG radio resource for transmission.

Wherein, in case the configuration information includes Split Bearer configuration information, the configuration information may not include a handover condition.

S307: the network device transmits the first indication information.

The first indication information is used for indicating the recovery of the secondary cell group SCG.

Specifically, the network device sends first indication information to the user equipment to indicate the user equipment to recover the secondary cell group SCG, and further recover to transmit service data in the secondary cell group SCG.

If the user equipment receives the first indication information, executing step S308;

and/or: if the switching condition is determined not to be satisfied, executing step S308;

and/or: if the condition for activating the secondary cell group SCG is satisfied, step S308 is executed.

It should be noted that, before the secondary cell group SCG is in the secondary cell group Suspension SCG Suspension state and the service data is not yet transferred from the secondary cell group SCG to the master cell group MCG, if it is determined that the handover condition is not satisfied and/or the condition for activating the secondary cell group SCG is satisfied, the service data is transferred through the secondary cell group SCG, and the service data is not transferred from the secondary cell group SCG to the master cell group MCG, that is, the SCG is directly activated to transfer the service data through the SCG.

S308: and the user equipment switches the service data from the master cell group MCG to the auxiliary cell group SCG for transmission.

Specifically, the user equipment activates the SCG, and further switches the service data from the master cell group MCG to the secondary cell group SCG for transmission, that is, transmits the service data through the secondary cell group SCG.

If step S308 is triggered by the foregoing determination that the handover condition is not satisfied, and/or the foregoing condition for activating the secondary cell group SCG is satisfied, step S309 is executed.

S309: and the user equipment sends the third indication information.

The third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

Specifically, the user equipment sends the third indication information to the network equipment to inform the network equipment to: and the user equipment transmits service data through the SCG.

S310: the network device receives the third indication information.

Specifically, the network device receives third indication information sent by the user equipment, so as to obtain, according to the third indication information: the user equipment transmits service data through the auxiliary cell group SCG, and then the network equipment can cooperate with the user equipment to execute the transmission of switching the service data from the main cell group MCG to the auxiliary cell group SCG.

In the embodiment of the application, the network equipment sends the configuration information to the user equipment, and then the user equipment can automatically switch the service data from the SCG of the auxiliary cell group to the MCG of the main cell group for transmission according to the configuration information when the SCG of the auxiliary cell group is in the SCG Suspension state of the auxiliary cell group, so that the time delay and the energy consumption of the data transmission of the user equipment are reduced.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a data transmission device according to an embodiment of the present application, specifically, as shown in fig. 4, the data transmission device includes: a storage device 401 and a processor 402; and the data transmission device may further comprise a data interface 403, a user interface 404. Connections may also be made between the various pieces of hardware via various types of buses.

Through the data interface 403, the data transmission device can interact data with other devices such as terminals and servers; the user interface 404 is used for realizing human-computer interaction between a user and the data transmission device; the user interface 404 may provide a touch display screen, physical keys, etc. to enable human-machine interaction between a user and the data transmission device.

The storage device 401 may include a Volatile Memory (Volatile Memory), such as a Random-Access Memory (RAM); the storage device 401 may also include a Non-Volatile Memory (Non-Volatile Memory), such as a Flash Memory (Flash Memory), a Solid-State Drive (SSD), etc.; the storage means 401 may also comprise a combination of memories of the kind described above.

The processor 402 may be a Central Processing Unit (CPU). The processor 402 may further include a hardware chip. The hardware chip may be an Application-Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or the like. The PLD may be a Field-Programmable Gate Array (FPGA), a General Array Logic (GAL), or the like.

For the case where the data transmission device is a user equipment in a dual-connection DC state:

the storage device 401 is used for storing program codes;

the processor 402, when invoking the stored code, is configured to receive configuration information;

In one embodiment, the configuration information includes: switching conditions;

In one embodiment, the configuration information includes: SCG wireless resource configuration information of the auxiliary cell group and MCG wireless resource configuration information of the main cell group;

the configuration information is used for indicating the user equipment to transmit service data by using SCG (secondary cell group) wireless resources or to transmit service data by using MCG (master cell group) wireless resources.

In one embodiment, the configuration information includes: separating and bearing Split Bearer configuration information;

In an embodiment, the processor 402 is further configured to transmit traffic data through the secondary cell group SCG if it is determined that the handover condition is not satisfied.

In one embodiment, the processor 402 is further configured to transmit traffic data through the secondary cell group SCG if a condition for activating the secondary cell group SCG is met.

In one embodiment, the processor 402 is further configured to switch, if the first indication information is received, traffic data from the master cell group MCG to the secondary cell group SCG for transmission; the first indication information is used for indicating the recovery of the secondary cell group SCG.

In one embodiment, the determining that the handover condition is satisfied comprises any one of:

In one embodiment, the configuration information is carried by a radio resource control, RRC, reconfiguration message.

In one embodiment, the processor 402 is further configured to receive second indication information before the switching of the transmission of the traffic data from the secondary cell group SCG to the master cell group MCG according to the configuration information; and activating or using the configuration information according to the second indication information.

In one embodiment, the second indication information is used to indicate that the secondary cell group SCG is in a secondary cell group Suspension SCG Suspension state.

In one embodiment, the processor 402 is further configured to send a third indication information; the third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

For the case where the data transfer device is a network device:

the storage device 401 is used for storing program codes;

the processor 402, when invoking the storage code, is configured to send configuration information, so that the ue in the dual connectivity DC state performs, if the secondary cell group SCG is in the secondary cell group Suspension SCG Suspension state, switching service data from the secondary cell group SCG to the master cell group MCG for transmission according to the configuration information.

In one embodiment, the configuration information is carried by a radio resource control layer RRC reconfiguration message.

In an embodiment, the processor 402 is further configured to send second indication information, so that the user equipment activates or uses the configuration information according to the second indication information.

In one embodiment, the processor 402 is further configured to receive third indication information; the third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

In one embodiment, the processor 402 is further configured to send first indication information; the first indication information is used for indicating the recovery of the secondary cell group SCG.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application, specifically, as shown in fig. 5, the data transmission apparatus is applied to a user equipment, and the user equipment is in a dual-connection DC state, where the data transmission apparatus includes:

a receiving module 501, configured to receive configuration information;

a switching module 502, configured to switch, if the secondary cell group SCG is in a secondary cell group Suspension SCG Suspension state, service data from the secondary cell group SCG to a master cell group MCG for transmission according to the configuration information.

In one embodiment, the data transmission apparatus further comprises:

and the transmission module is used for transmitting the service data through the SCG if the switching condition is not met.

In an embodiment, the transmission module is further configured to transmit the service data through the secondary cell group SCG if a condition for activating the secondary cell group SCG is met.

In an embodiment, the switching module 502 is further configured to switch, if the first indication information is received, the service data from the master cell group MCG to the secondary cell group SCG for transmission; the first indication information is used for indicating the recovery of the secondary cell group SCG.

In an embodiment, the receiving module 501 is further configured to receive second indication information before the service data is switched from the secondary cell group SCG to the master cell group MCG for transmission according to the configuration information; and activating or using the configuration information according to the second indication information.

In one embodiment, the data transmission apparatus further includes:

the sending module is used for sending third indication information; the third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another data transmission apparatus provided in an embodiment of the present application, specifically, as shown in fig. 6, the data transmission apparatus may be applied to a network device, and the data transmission apparatus includes:

a sending module 601, configured to send configuration information, so that the user equipment performs, if the secondary cell group SCG is in a secondary cell group Suspension SCG Suspension state, switching service data from the secondary cell group SCG to a master cell group MCG for transmission according to the configuration information.

In an embodiment, the sending module 601 is further configured to send second indication information, so that the user equipment activates or uses the configuration information according to the second indication information.

In one embodiment, the data transmission apparatus further comprises:

the receiving module is used for receiving third indication information; the third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

In an embodiment, the sending module 601 is further configured to send first indication information; the first indication information is used for indicating the recovery of the secondary cell group SCG.

Accordingly, the embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is used for storing a computer program, and the computer program enables a computer to execute the method described in any embodiment of steps S201 to S202, steps S302, S304 to S306, and S308 to S309 of the present application. It is understood that the computer storage medium herein may include a built-in storage medium in the smart terminal, and may also include an extended storage medium supported by the smart terminal. The computer storage medium provides a storage space storing an operating system of the smart terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer storage medium may be a high-speed RAM Memory, or may be a Non-Volatile Memory (Non-Volatile Memory), such as at least one disk Memory; and optionally at least one computer storage medium located remotely from the processor.

Accordingly, the embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is used for storing a computer program, and the computer program enables a computer to execute the method described in any embodiment of steps S21, S301, S303, S307, and S310 of this application. It is understood that the computer storage medium herein may include a built-in storage medium in the smart terminal, and may also include an extended storage medium supported by the smart terminal. The computer storage medium provides a storage space storing an operating system of the smart terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer storage medium may be a high-speed RAM Memory, or may be a Non-Volatile Memory (Non-Volatile Memory), such as at least one disk Memory; and optionally at least one computer storage medium located remotely from the processor.

While the invention has been described with reference to a number of embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A data transmission method applied to a User Equipment (UE), wherein the UE is in a dual-connection (DC) state, the method comprising:

receiving configuration information;

2. The method of claim 1, wherein the configuration information comprises: switching conditions;

3. The method of claim 1, wherein the configuration information comprises: SCG wireless resource configuration information of the auxiliary cell group and MCG wireless resource configuration information of the main cell group;

4. The method of claim 1, wherein the configuration information comprises: separating and bearing Split Bearer configuration information;

5. The method of claim 2, wherein the method further comprises:

and if the switching condition is not met, transmitting the service data through the auxiliary cell group SCG.

6. The method of claim 1, wherein the method further comprises:

and if the condition of activating the auxiliary cell group SCG is met, transmitting the service data through the auxiliary cell group SCG.

7. The method of claim 1, wherein the method further comprises:

if first indication information is received, service data is switched from the master cell group MCG to the auxiliary cell group SCG for transmission; the first indication information is used for indicating the recovery of the secondary cell group SCG.

8. The method of claim 2 or 5, wherein the determining that the handover condition is satisfied comprises any of:

9. The method of claim 1, wherein the configuration information is carried by a Radio Resource Control (RRC) reconfiguration message.

10. The method of claim 1, wherein prior to said handing over traffic data from the secondary cell group SCG to a master cell group MCG for transmission in accordance with the configuration information, the method further comprises:

receiving second indication information;

and activating or using the configuration information according to the second indication information.

11. The method of claim 10, wherein the second indication information indicates that the secondary cell group SCG is in a secondary cell group Suspension SCG Suspension state.

12. The method of claim 5 or 6, further comprising:

sending third indication information; the third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

13. A data transmission method, applied to a network device, the method comprising:

14. The method of claim 13, wherein the configuration information comprises: switching conditions;

15. The method of claim 13, wherein the configuration information comprises: SCG wireless resource configuration information of the auxiliary cell group and MCG wireless resource configuration information of the main cell group;

16. The method of claim 13, wherein the configuration information comprises: separating and bearing Split Bearer configuration information;

17. The method of claim 14, wherein the determining that the handover condition is satisfied comprises any of:

18. The method of claim 13, wherein the configuration information is carried by a radio resource control layer (RRC) reconfiguration message.

19. The method of claim 13, wherein the method further comprises:

and sending second indication information to enable the user equipment to activate or use the configuration information according to the second indication information.

20. The method of claim 19, wherein the second indication information indicates that the secondary cell group SCG is in a secondary cell group Suspension SCG Suspension state.

21. The method of claim 13, wherein the method further comprises:

receiving third indication information; the third indication information is used for indicating the user equipment to transmit service data through the secondary cell group SCG.

22. The method of claim 13, wherein the method further comprises:

sending first indication information; the first indication information is used for indicating the recovery of the secondary cell group SCG.

23. A data transmission device, characterized in that the data transmission device comprises: a storage device and a processor, wherein the processor is capable of,

the storage device is used for storing program codes;

the processor, when invoking the stored code, is configured to perform the data transfer method of any of claims 1-12.

24. A data transmission device, characterized in that the data transmission device comprises: a storage device and a processor, wherein the processor is capable of,

the storage device is used for storing program codes;

the processor, when invoking the stored code, is configured to perform the data transmission method of any of claims 13-22.

25. A data transmission apparatus, wherein the data transmission apparatus is applied to a user equipment, and the user equipment is in a dual-connection DC state, and the data transmission apparatus comprises:

the receiving module is used for receiving the configuration information;

26. A data transmission apparatus, characterized in that the data transmission apparatus comprises:

27. A computer-readable storage medium for storing a computer program for causing a computer to execute the data transmission method according to any one of claims 1 to 12.

28. A computer-readable storage medium for storing a computer program for causing a computer to execute the data transmission method according to any one of claims 13 to 22.