CN111148150B - Data transmission method, device, base station equipment and storage medium - Google Patents

Data transmission method, device, base station equipment and storage medium Download PDF

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Publication number
CN111148150B
CN111148150B CN201911314043.6A CN201911314043A CN111148150B CN 111148150 B CN111148150 B CN 111148150B CN 201911314043 A CN201911314043 A CN 201911314043A CN 111148150 B CN111148150 B CN 111148150B
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message
base station
cell
measurement result
terminal equipment
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CN111148150A (en
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张雍涛
李淑芹
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Comba Network Systems Co Ltd
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Comba Network Systems Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/32—Release of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a data transmission method, a data transmission device, base station equipment and a storage medium, wherein a primary base station receives a first message reported under the condition that a terminal equipment generates secondary cell group connection Failure (SCG Failure); and if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type. By adopting the method, the interruption of data transmission of the terminal equipment caused by SCG Failure can be avoided, and the reliability of the system is improved.

Description

Data transmission method, device, base station equipment and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, base station device, and storage medium.
Background
With the rapid development of the fifth generation mobile communication technology (5 th generation mobile networks, abbreviated as 5G) (NR Radio Access, abbreviated as NR), before the 5G has not yet been fully popularized, in order to enable a terminal in a transition period to enjoy a high-speed data service experience brought by the 5G, a Non-independent (NSA) networking manner, that is, a networking manner in which a 4G base station is used as a Master base station (MN) and a 5G base station is used as a Secondary base Station (SN), is generally adopted. In one NSA networking mode, the signaling plane of the terminal device is transferred through the MN, and the data plane of the terminal device is transferred through the SN, and the scheme builds a packet data convergence protocol (Packet Data Convergence Protocol, abbreviated PDCP) of the data radio bearer on the SN side, and meanwhile, builds a secondary cell group (Secondary Cell Group, abbreviated SCG) to separate the bearer to carry the data plane service of the terminal. When the terminal device detects the radio link Failure information (SCG Failure), how to guarantee the data plane service of the terminal device becomes an important problem to be solved in the NSA scenario.
In the conventional technology, after receiving an SCG Failure reported by a terminal device, a main base station may select a new cell from an NR neighbor cell according to a measurement result of a 5G neighbor cell, that is, an NR Radio Access, carried in the SCG Failure, and use a base station where the new cell is located as a new SN to replace an old SN where the SCG Failure is detected.
However, with the above method, when the SCG Failure received by the host station does not carry the measurement result of the NR neighboring cell, the continuity requirement of the data service of the terminal device cannot be guaranteed.
Disclosure of Invention
Based on this, it is necessary to provide a data transmission method, apparatus, base station device, and storage medium in order to address the above technical problems.
A data transmission method, said method comprising:
receiving a first message reported by terminal equipment under the condition that secondary cell group connection fails (SCG Failure);
and if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type.
In one embodiment, the adjusting the user plane bearer type of the terminal device to the MCG bearer type of the primary cell group includes:
Sending a reconfiguration message to the terminal equipment; the reconfiguration message is used for indicating the terminal equipment to switch the PDCP version of the packet data convergence protocol into a version corresponding to the MCG bearer type;
and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing that the current PDCP version of the terminal equipment is switched.
In one embodiment, the reconfiguration message carries a bearer modification field mobilityControlInfo, a configuration reset field fullConfig-r9, and a bearer release indication field nr-Config-r15 (release) field.
In one embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including:
the first message does not carry the primary neighbor measurement result of the first neighbor configured by the primary base station MN and the measurement result of the measurement object configured by the SN.
In one embodiment, the measurement result of the SN configured measurement object includes: secondary neighbor cell measurement results of a second neighbor cell configured by SN and/or cell measurement results of a cell in which the terminal equipment is currently located; the cell is a cell covered by SN.
In one embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including:
The content carried by the first message indicates that the terminal equipment cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of the following:
the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold value;
the first message does not carry the measurement result of the auxiliary neighbor cell and carries the first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is a cell covered by SN;
the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
In one embodiment, the content characterizing that the terminal device cannot be switched to the first neighboring cell configured by the master base station MN, where the content characterizing that the first message is carried includes:
the first message does not carry the main neighbor measurement result of the first neighbor;
or,
the first message carries a primary neighbor cell measurement result, and the primary neighbor cell measurement result is smaller than a preset primary cell switching threshold.
In one embodiment, before the sending the first reconfiguration message to the terminal device, the method further includes:
Sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearer between the SN release and the terminal equipment;
and receiving a release request response sent by the SN, wherein the release request response is used for notifying the MN that the bearer release is finished currently.
In one embodiment, before the sending the first reconfiguration message to the terminal device, the method further includes:
a second auxiliary base station modification request sent to the SN, wherein the auxiliary base station modification request carries a measurement result in the first message;
receiving a modification request response sent by the SN, wherein the modification request response is used for notifying the MN that the modification request of the auxiliary base station is received;
receiving a second auxiliary base station release request sent by the SN; the second auxiliary base station releases the request to be sent by the SN under the condition that the content carried by the first message is determined to not meet the SN switching condition; a request to request from the MN whether to release the bearer with the terminal device;
and sending a secondary base station release confirmation message to the SN, wherein the secondary base station release confirmation message is used for indicating the bearer between the SN release and the terminal equipment.
A data transmission device, said device comprising:
the receiving module is used for receiving a first message reported by the terminal equipment under the condition that the secondary cell group connection fails (SCG Failure);
And the adjusting module is used for adjusting the user plane bearing type of the terminal equipment to the MCG bearing type of the main cell group under the condition that the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station.
A base station device comprising a memory storing a computer program and a processor implementing the steps of the data transmission method when the processor executes the computer program.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the data transmission method described above.
According to the data transmission method, the data transmission device, the base station equipment and the storage medium, the primary base station receives the first message reported under the condition that the terminal equipment generates the secondary cell group connection Failure SCG Failure; and if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type. Under the condition that the primary base station cannot switch the SN, the user plane bearing type of the terminal equipment is adjusted to the primary cell group MCG bearing type, so that the data service transmission of the terminal equipment can be completed through the primary base station, the interruption of the data transmission of the terminal equipment caused by the occurrence of SCG Failure is avoided, and the reliability of the system is improved.
Drawings
FIG. 1 is a diagram of an application environment for a data transmission method in one embodiment;
FIG. 2 is a flow chart of a data transmission method in one embodiment;
FIG. 3 is a flow chart of a data transmission method according to another embodiment;
FIG. 4 is a flow chart of a data transmission method in another embodiment;
FIG. 5 is a flow chart of a data transmission method according to another embodiment;
FIG. 6 is a block diagram of a data transmission device in one embodiment;
FIG. 7 is a block diagram of a data transmission device in one embodiment;
FIG. 8 is a block diagram of a data transmission device in one embodiment;
fig. 9 is an internal structural diagram of a base station apparatus in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The data transmission method provided by the application can be applied to an application environment shown in fig. 1. The terminal device 300 is connected to the main base station 100 and the auxiliary base station 200 through a dual connection networking mode. The terminal device 300 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, portable wearable devices, and the like. The above-mentioned main base station 100 and auxiliary base station 200 may be, but not limited to, base station devices of macro base station, micro base station, small base station, etc., evolved base station (Evolutional Node B, abbreviated eNB or eNodeB) in LTE, relay station or access point, base station in 5G network, customer premise equipment (Customer Premise Equipment, abbreviated CPE), etc., which are not limited herein.
In one embodiment, as shown in fig. 2, a data transmission method is provided, which is illustrated by taking the main base station 100 in fig. 1 as an example, and includes:
s101, receiving a first message reported under the condition that the terminal equipment generates secondary cell group connection Failure SCG Failure.
Deployment of new generation mobile communication networks is a progressive process, and NSA networking mode can be adopted in the early stage of construction. For example, the 5G wireless system is connected to the existing LTE core network by using a networking mode in which the 4G base station is a Master base station (MN) and the 5G base station is a Secondary base Station (SN), so as to implement rapid deployment and scheme verification of the 5G system.
In the NAS networking mode, the user plane bearing of the terminal equipment can be independently served by the MN or the SN, and the MN and the SN can also be served simultaneously; the service is carried by a main cell group (Master Cell Group, MCG for short) when served by the MN, wherein the service cell group is controlled by the MN when the MCG is used; the SCG bearer when being independently served by the SN, wherein the SCG is a service cell group controlled by the SN; and is also referred to as SCG split bearer when served by MN and SN. And triggering the SCG Failure when the wireless link between the terminal equipment and the SN fails in the SCG bearing or SCG separation bearing mode.
After the terminal device triggers the SCG Failure, the first message may be reported to the MN. The primary base station may receive the first message based on a bearer with the terminal device. The first message described above may be used to instruct the MN to determine whether the SN can be switched.
The content carried by the first message may include an identifier of SN corresponding to the SCG Failure, or may include a trigger time of the SCG Failure, or may further include a measurement result of each cell reported by the terminal device; in addition, the first message may also be a cell measurement result periodically reported by the terminal device.
Specifically, the measurement result may be a result obtained by the terminal device measuring the cell covered by the MN or SN based on the measurement configuration after the MN or SN sends the measurement configuration to the terminal device before the terminal device triggers the SCG Failure, and sent to the MN through the scgfairuinformation nr. For example, the MN may notify the terminal device of the measurement configuration message through a measConfig cell carried in the rrcconnectionreconfiguration message, and the terminal device may Measure the current serving cell, or determine whether measurement of the neighboring cell needs to be performed according to the s-Measure cell in the rrcconnectionreconfiguration message.
The measurement result may include different measurement amounts, and may include reference signal received power ((Reference Signal Receiving Power, RSRP) or reference signal received quality (Reference Signal Receiving Quality, RSRQ), and the type of the measurement result is not limited herein.
S102, if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type.
After receiving the first message, the MN may determine, according to a preset SN switching condition, whether the content carried by the first message meets the SN switching condition. If the content carried by the first message meets the preset SN switching condition, the MN can trigger the SN switching process to ensure the data transmission of the terminal equipment; if the content carried by the first message does not meet the preset SN switching condition, the MN may adjust the user plane bearer type of the terminal device to the MCG bearer type, and independently service the user plane bearer of the terminal device through the MN.
The SN switching condition may be determined by a measurement result of each cell carried in the first message. The cells may be a first neighbor cell configured by the MN, or may be a second neighbor cell configured by the SN, or may further include a current serving cell under the SN.
The SN switching condition may refer to that a switchable cell exists in a first neighboring cell configured by the MN, or may refer to that a switchable cell exists in a second neighboring cell including SN configuration, or may refer to that a bearer can be established with the terminal device by adjusting a service frequency in a cell covered by the SN; the type of the SN switching condition is not limited here.
In the case that the content carried by the first message does not meet the SN switching condition, the MN may adjust the user plane bearer type of the terminal device to the MCG bearer type. Specifically, the MN may send a message to the terminal device informing the terminal device to send the user plane data to the MN; the bearer can be reestablished with the terminal equipment by modifying the configuration parameters; the adjustment method is not limited herein.
According to the data transmission method, the primary base station receives the first message reported under the condition that the terminal equipment generates the SCG Failure of the secondary cell group connection; and if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type. Under the condition that the primary base station cannot switch the SN, the user plane bearing type of the terminal equipment is adjusted to the primary cell group MCG bearing type, so that the data service transmission of the terminal equipment can be completed through the primary base station, the interruption of the data transmission of the terminal equipment caused by the occurrence of SCG Failure is avoided, and the reliability of the system is improved.
Fig. 3 is a flow chart of a data transmission method in another embodiment, where the embodiment relates to a manner in which a primary base station adjusts a user plane bearer type of a terminal device to a primary cell group MCG bearer type, and on the basis of the above embodiment, as shown in fig. 3, the step S102 includes:
s201, sending a reconfiguration message to the terminal equipment; the reconfiguration message is used for instructing the terminal device to switch the PDCP version of the packet data convergence protocol to a version corresponding to the MCG bearer type.
The reconfiguration message may carry a version switching instruction, may also carry information such as a switched version identifier, a switched version serial number, and the like, and may also include a version switching mode, for example, whether the version switching mode is a partial switching mode or a full switching mode; the content of the reconfiguration message is not limited herein.
Optionally, the reconfiguration message may further carry a bearer modification field mobilityControlInfo, a configuration reset field FullConfig-r9, and a bearer release indication field nr-Config-r15 (release) field. Wherein, the mobile control info can be used to instruct the terminal device to modify or establish the bearer; the fullConfig-r9 is used for indicating the terminal equipment to reset the configuration parameters to the initial parameters; the nr-Config-r15 (release) is used to instruct the terminal device to release the bearer with the SN.
S202, receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing that the current PDCP version of the terminal equipment is switched.
After receiving the reconfiguration message, the terminal equipment can complete PDCP version switching according to the information carried in the reconfiguration message, and then send a reconfiguration response to the MN.
In addition, when the MN controls the terminal equipment to switch the PDCP version, the configuration parameters of the MN can be modified so as to ensure the smooth transmission of the data of the terminal equipment. The process of configuring the parameters can be as follows: the network layer in the MN suspends the data link layer in the MN so that the data link layer stops processing data; then, the network layer in the MN instructs the physical layer and the data link layer of the MN to modify the SRB1 parameters; further, the network layer in the MN instructs the physical layer and the data link layer of the MN to modify the SRB2 parameters and the DRB parameters; the SRB1 parameter and the SRB2 parameter are parameters of signaling plane bearers of the MN and the terminal device, and the DRB parameter is a parameter of user plane bearers to be established between the MN and the terminal device.
After finishing parameter configuration, the MN may also receive a data transmission state SN Status Transfer sent by the SN, where SN Status Transfer may carry a sequence number of data that the SN has transmitted to the terminal device before the current handover; the MN can determine the initial position of data transmitted to the terminal equipment according to the sequence number; further, the MN may send a file release instruction to the SN, instructing the SN to release uplink and downlink data of the terminal device.
Further, the MN may send a bearer switching instruction to the core network device, where the bearer switching instruction is used to instruct the core network device to modify the user plane bearer address of the terminal device to the address of the MN.
According to the data transmission method, the main base station sends the reconfiguration message to the terminal equipment to instruct the terminal equipment to switch the PDCP version to the version corresponding to the MCG bearing type, so that the user plane data of the terminal equipment can be efficiently switched back to the main base station through the version switching flow, the data transmission continuity of the terminal equipment is ensured, and the system reliability is improved.
In an embodiment, the method for determining, by the primary base station, that the content carried by the first message does not meet the preset secondary base station SN switching condition may include: the first message does not carry the primary neighbor measurement result of the first neighbor configured by the primary base station MN and the measurement result of the measurement object configured by the SN.
When the first message does not carry the main neighbor measurement result of the first neighbor configured by the main base station MN and the measurement result of the measurement object configured by the SN, the MN cannot determine the cells that can be switched according to the content carried by the first message, so that the SN switching condition is not satisfied in the scene.
The measurement result of the measurement object configured by the SN comprises: secondary neighbor cell measurement results of a second neighbor cell configured by SN and/or cell measurement results of a cell in which the terminal equipment is currently located; the cell is a cell covered by SN.
According to the data transmission method, the main base station determines that the content carried by the first message does not meet the SN switching condition under the condition that the first message does not carry the main neighbor measurement result of the first neighbor configured by the main base station MN and the measurement result of the measurement object configured by the SN, so that the user plane bearing type of the terminal equipment is further adjusted to be MCG bearing, the continuity of data transmission of the terminal equipment is ensured, and the reliability of the system is improved.
In an embodiment, when the content carried by the first message includes a measurement result, the MN determines that the content carried by the first message does not meet the SN switching condition, and on the basis of the foregoing embodiment, the terminal device may further determine, according to the measurement result of the measurement object configured by the SN, whether the SN of the terminal device can be switched to the second neighbor configured by the SN, when the content carried by the first message indicates that the terminal device cannot be switched to the first neighbor configured by the primary base station MN.
The content characterization terminal equipment carried by the first message cannot be switched to a first neighbor cell configured by the MN, and the method comprises the following steps: the first message does not carry the main neighbor measurement result of the first neighbor; or the first message carries a primary neighbor cell measurement result, and the primary neighbor cell measurement result is smaller than a preset primary cell switching threshold value.
Specifically, the MN determines that the content carried by the first message indicates that the terminal device cannot be switched to the second neighbor cell configured by the SN includes any one of the following:
the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold value;
the first message does not carry the measurement result of the auxiliary neighbor cell and carries the first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is a cell covered by SN;
the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
When the measurement result of the measurement object of the SN configuration carried in the first message is a secondary neighbor cell measurement result smaller than a preset secondary cell switching threshold, the primary base station may consider that SN cannot be switched to the second neighbor cell; the measurement object measurement result of the SN configuration carried in the first message is a first measurement result corresponding to the working frequency band of the cell where the measurement object measurement result is currently located, or a second measurement result corresponding to other working frequency bands smaller than the auxiliary cell switching threshold value, and the SN switching condition cannot be satisfied.
According to the data transmission method, the main base station carries the measurement result of the cell in the first message, but when the measurement result cannot meet the SN switching condition, the MN can adjust the user plane bearing type of the terminal equipment to be MCG bearing, so that the continuity of data transmission of the terminal equipment is ensured, and the reliability of the system is improved.
When determining whether to switch the SN according to the content carried by the first message, the primary base station MN may determine, according to the content of the first message, a scene type of the terminal device in which the SCG Failure occurs, for example, determine, as a scene one, a case in which the first message in the above embodiment does not carry the primary neighbor measurement result of the first neighbor configured by the primary base station MN and the measurement result of the measurement object configured by the SN; determining a scene which still does not meet the SN switching condition as a scene two under the condition that the content carried by the first message contains the measurement result; in addition, the MN can divide the scenes satisfying the SN switching condition according to the content carried by the first message.
Specifically, if the measurement result of the primary neighbor cell of the first neighbor cell configured by the MN is greater than or equal to the first threshold, the MN may switch the SN to the base station where the first neighbor cell is located, and may determine that the first scenario is a third scenario; if the content carried by the first message indicates that the terminal equipment cannot be switched to the first neighbor cell configured by the MN, but the measurement result of the secondary neighbor cell of the carried SN configured second neighbor cell is greater than or equal to a second threshold value, the MN can switch the SN to a base station where the SN configured second neighbor cell is located, and the scene can be determined as a scene four; in addition, if the content carried by the first message indicates that the terminal equipment cannot be switched to the first neighboring cell configured by the MN, but carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is greater than or equal to the secondary cell switching threshold, the MN can adjust the service frequency of the SN.
The MN may start an SN switching procedure when determining that the scene type of the SCG Failure occurring in the terminal device is scene three or scene four, and specifically, the SN switching procedure may include: the MN sends a configuration message to the terminal equipment, wherein the reconfiguration message carries the identification information of the target SN; the MN receives a configuration completion response returned by the terminal equipment, wherein the configuration completion response characterizes that the terminal equipment completes the configuration of the bearing parameters; the MN sends a reconfiguration completion message to the target SN, wherein the reconfiguration completion message is used for notifying the target SN that the terminal equipment of the target SN has completed the configuration of the bearing parameters; further, the MN may also receive the data transmission status SN Status Transfer sent by the SN; the MN can determine the initial position of data transmitted to the terminal equipment according to the sequence number; and sending a file release instruction to the SN corresponding to the triggering SCG Failure, and indicating the SN to release the uplink and downlink data of the terminal equipment.
When the MN adjusts the user plane bearing type of the terminal equipment to the MCG bearing type of the main cell group or switches the SN to the base station where other cells are located, the MN can control the SN to release the bearing with the terminal equipment. In particular, different bearer release flows may be employed in different scenarios.
In an embodiment, in the case that the scene type of the SCG Failure related to the terminal device is scene one or scene three, the MN triggers a bearer release process, and on the basis of the above embodiment, as shown in fig. 3, the above step S201 further includes:
s301, a first auxiliary base station release request is sent to the SN, and the first auxiliary base station release request is used for indicating the bearer between the SN release and the terminal equipment.
S302, receiving a release request response sent by the SN, wherein the release request response is used for notifying the MN that the bearer release is completed currently.
According to the data transmission method, the MN triggers the bearer release flow to indicate the SN to release the bearer with the terminal equipment, so that the MN can smoothly switch the user plane bearer of the terminal equipment.
In an embodiment, in the case where the scene type of the SCG Failure related to the terminal device is scene two or scene four, the SN triggers the process of releasing the bearer, as shown in fig. 4, further includes, before S201:
s401, a second auxiliary base station modification request is sent to the SN, and the auxiliary base station modification request carries a measurement result in the first message.
S402, receiving a modification request response sent by the SN, wherein the modification request response is used for notifying the MN that the modification request of the auxiliary base station is received.
S403, receiving a second auxiliary base station release request sent by the SN; the second auxiliary base station releases the request to be sent by the SN under the condition that the content carried by the first message is determined to not meet the SN switching condition; the request is for requesting from the MN whether to release the bearer with the terminal device.
S404, sending a release confirmation message of the auxiliary base station to the SN, wherein the release confirmation message is used for indicating the bearer between the SN release and the terminal equipment.
According to the data transmission method, the MN indicates the SN to trigger the bearer release flow through the second auxiliary base station modification request sent to the SN, and the bearer between the SN and the terminal equipment is released, so that the MN can smoothly complete the user plane bearer switching of the terminal equipment.
It should be understood that, although the steps in the flowcharts of fig. 2-5 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 2-5 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily occur sequentially, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or steps.
In one embodiment, as shown in fig. 6, there is provided a data transmission apparatus including: a receiving module 10 and an adjusting module 20, wherein:
the receiving module 10 is configured to receive a first message reported when the terminal device generates an SCG Failure of the secondary cell group connection;
and the adjusting module 20 is configured to adjust the user plane bearer type of the terminal device to a primary cell group MCG bearer type if the content carried by the first message does not meet the preset secondary base station SN switching condition.
The data transmission device provided in the embodiment of the present application may implement the above method embodiment, and its implementation principle and technical effects are similar, and are not described herein again.
In one embodiment, based on the above embodiment, as shown in fig. 7, the adjusting module 20 includes:
a sending unit 201, configured to send a reconfiguration message to a terminal device; the reconfiguration message is used for indicating the terminal equipment to switch the PDCP version of the packet data convergence protocol into a version corresponding to the MCG bearer type;
a receiving unit 202, configured to receive a reconfiguration response sent by the terminal device, where the reconfiguration response is used to characterize that the current PDCP version of the terminal device is switched to be complete.
In one embodiment, the reconfiguration message carries a bearer modification field mobilityControlInfo, a configuration reset field fullConfig-r9, and a bearer release indication field nr-Config-r15 (release) field, on the basis of the above embodiments.
In an embodiment, on the basis of the foregoing embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including: the first message does not carry the primary neighbor measurement result of the first neighbor configured by the primary base station MN and the measurement result of the measurement object configured by the SN.
In one embodiment, on the basis of the above embodiment, the measurement result of the SN-configured measurement object includes: secondary neighbor cell measurement results of a second neighbor cell configured by SN and/or cell measurement results of a cell in which the terminal equipment is currently located; the cell is a cell covered by SN.
In an embodiment, on the basis of the foregoing embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including: the content carried by the first message indicates that the terminal equipment cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of the following: the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold value; the first message does not carry the measurement result of the auxiliary neighbor cell and carries the first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is a cell covered by SN; the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
In an embodiment, on the basis of the foregoing embodiment, the content characterizing that the terminal device carried by the first message cannot be switched to the first neighboring cell configured by the master base station MN includes: the first message does not carry the main neighbor measurement result of the first neighbor; or the first message carries a primary neighbor cell measurement result, and the primary neighbor cell measurement result is smaller than a preset primary cell switching threshold value.
In one embodiment, on the basis of the above embodiment, as shown in fig. 8, the above adjustment module 20 further includes a release unit 203, configured to: sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearer between the SN release and the terminal equipment; and receiving a release request response sent by the SN, wherein the release request response is used for notifying the MN that the bearer release is completed currently.
In an embodiment, on the basis of the above embodiment, the release unit 203 is further configured to: a second auxiliary base station modification request sent to the SN, wherein the auxiliary base station modification request carries a measurement result in the first message; receiving a modification request response sent by the SN, wherein the modification request response is used for notifying the MN that the modification request of the auxiliary base station is received; receiving a second auxiliary base station release request sent by the SN; the second auxiliary base station releases the request to be sent by the SN under the condition that the content carried by the first message is determined to not meet the SN switching condition; a request to request from the MN whether to release the bearer with the terminal device; and sending a secondary base station release confirmation message to the SN, wherein the secondary base station release confirmation message is used for indicating the bearer between the SN release and the terminal equipment.
The data transmission device provided in the embodiment of the present application may implement the above method embodiment, and its implementation principle and technical effects are similar, and are not described herein again.
For specific limitations of the data transmission device, reference may be made to the above limitation of the data transmission method, and no further description is given here. The respective modules in the above-described data transmission apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a base station apparatus is provided, the internal structure of which may be as shown in fig. 9. The base station apparatus includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the base station device is configured to provide computing and control capabilities. The memory of the base station device includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the base station device is used for storing data transmission data. The network interface of the base station device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a data transmission method.
It will be appreciated by those skilled in the art that the structure shown in fig. 9 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the base station apparatus to which the present application is applied, and that a particular base station apparatus may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a base station apparatus is provided, comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
receiving a first message reported by terminal equipment under the condition that secondary cell group connection fails (SCG Failure);
and if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type.
In one embodiment, the processor when executing the computer program further performs the steps of: sending a reconfiguration message to the terminal equipment; the reconfiguration message is used for indicating the terminal equipment to switch the PDCP version of the packet data convergence protocol into a version corresponding to the MCG bearer type; and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing that the current PDCP version of the terminal equipment is switched.
In one embodiment, the reconfiguration message carries a bearer modification field mobilityControlInfo, a configuration reset field FullConfig-r9, and a bearer release indication field nr-Config-r15 (release) field.
In one embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including: the first message does not carry the primary neighbor measurement result of the first neighbor configured by the primary base station MN and the measurement result of the measurement object configured by the SN.
In one embodiment, the measurement results of the SN configured measurement object include: secondary neighbor cell measurement results of a second neighbor cell configured by SN and/or cell measurement results of a cell in which the terminal equipment is currently located; the cell is a cell covered by SN.
In one embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including: the content carried by the first message indicates that the terminal equipment cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of the following: the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold value; the first message does not carry the measurement result of the auxiliary neighbor cell and carries the first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is a cell covered by SN; the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
In one embodiment, the processor when executing the computer program further performs the steps of: the first message does not carry the main neighbor measurement result of the first neighbor; or the first message carries a primary neighbor cell measurement result, and the primary neighbor cell measurement result is smaller than a preset primary cell switching threshold value.
In one embodiment, the processor when executing the computer program further performs the steps of: sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearer between the SN release and the terminal equipment; and receiving a release request response sent by the SN, wherein the release request response is used for notifying the MN that the bearer release is completed currently.
In one embodiment, the processor when executing the computer program further performs the steps of: a second auxiliary base station modification request sent to the SN, wherein the auxiliary base station modification request carries a measurement result in the first message; receiving a modification request response sent by the SN, wherein the modification request response is used for notifying the MN that the modification request of the auxiliary base station is received; receiving a second auxiliary base station release request sent by the SN; the second auxiliary base station releases the request to be sent by the SN under the condition that the content carried by the first message is determined to not meet the SN switching condition; a request to request from the MN whether to release the bearer with the terminal device; and sending a secondary base station release confirmation message to the SN, wherein the secondary base station release confirmation message is used for indicating the bearer between the SN release and the terminal equipment.
The base station device provided in this embodiment has similar implementation principles and technical effects to those of the above method embodiment, and will not be described herein.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
receiving a first message reported by terminal equipment under the condition that secondary cell group connection fails (SCG Failure);
and if the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type.
In one embodiment, the computer program when executed by the processor further performs the steps of: sending a reconfiguration message to the terminal equipment; the reconfiguration message is used for indicating the terminal equipment to switch the PDCP version of the packet data convergence protocol into a version corresponding to the MCG bearer type; and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing that the current PDCP version of the terminal equipment is switched.
In one embodiment, the reconfiguration message carries a bearer modification field mobilityControlInfo, a configuration reset field FullConfig-r9, and a bearer release indication field nr-Config-r15 (release) field.
In one embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including: the first message does not carry the primary neighbor measurement result of the first neighbor configured by the primary base station MN and the measurement result of the measurement object configured by the SN.
In one embodiment, the measurement results of the SN configured measurement object include: secondary neighbor cell measurement results of a second neighbor cell configured by SN and/or cell measurement results of a cell in which the terminal equipment is currently located; the cell is a cell covered by SN.
In one embodiment, the content carried by the first message does not meet a preset secondary base station SN switching condition, including: the content carried by the first message indicates that the terminal equipment cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of the following: the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold value; the first message does not carry the measurement result of the auxiliary neighbor cell and carries the first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is a cell covered by SN; the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
In one embodiment, the computer program when executed by the processor further performs the steps of: the first message does not carry the main neighbor measurement result of the first neighbor; or the first message carries a primary neighbor cell measurement result, and the primary neighbor cell measurement result is smaller than a preset primary cell switching threshold value.
In one embodiment, the computer program when executed by the processor further performs the steps of: sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearer between the SN release and the terminal equipment; and receiving a release request response sent by the SN, wherein the release request response is used for notifying the MN that the bearer release is completed currently.
In one embodiment, the computer program when executed by the processor further performs the steps of: a second auxiliary base station modification request sent to the SN, wherein the auxiliary base station modification request carries a measurement result in the first message; receiving a modification request response sent by the SN, wherein the modification request response is used for notifying the MN that the modification request of the auxiliary base station is received; receiving a second auxiliary base station release request sent by the SN; the second auxiliary base station releases the request to be sent by the SN under the condition that the content carried by the first message is determined to not meet the SN switching condition; a request to request from the MN whether to release the bearer with the terminal device; and sending a secondary base station release confirmation message to the SN, wherein the secondary base station release confirmation message is used for indicating the bearer between the SN release and the terminal equipment.
The computer readable storage medium provided in this embodiment has similar principles and technical effects to those of the above method embodiment, and will not be described herein.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (11)

1. A data transmission method, applied to a master base station, the method comprising:
receiving a first message reported under the condition that a terminal device with a user plane bearing type being an auxiliary cell group SCG bearing type or an SCG separation bearing type generates an auxiliary cell group connection Failure SCG Failure; the first message is used for indicating the MN to determine whether the SN can be switched;
If the content carried by the first message does not meet the preset auxiliary base station SN switching condition, the user plane bearing type of the terminal equipment is adjusted to be the main cell group MCG bearing type; the content carried by the first message does not meet a preset auxiliary base Station (SN) switching condition, which comprises the following steps: the content carried by the first message characterizes that the terminal equipment cannot be switched to a first neighboring cell configured by the master base station MN, and the first message includes any one of the following: the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold; the first message does not carry the measurement result of the auxiliary neighbor cell and carries a first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is covered by the SN; the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
2. The method for data transmission according to claim 1, wherein said adjusting the user plane bearer type of the terminal device to the master cell group MCG bearer type includes:
Sending a reconfiguration message to the terminal equipment; the reconfiguration message is used for indicating the terminal equipment to switch the PDCP version of the packet data convergence protocol into a version corresponding to the MCG bearer type;
and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing that the current PDCP version of the terminal equipment is switched.
3. The data transmission method according to claim 2, wherein the reconfiguration message carries a bearer modification field mobilityControlInfo, a configuration reset field fullConfig-r9, and a bearer release indication field nr-Config-r15 (release) field.
4. The data transmission method according to claim 2 or 3, wherein the content carried by the first message does not meet a preset secondary base station SN switching condition, including:
the first message does not carry a primary neighbor measurement result of the first neighbor configured by the primary base station MN and a measurement result of the measurement object configured by the SN.
5. The data transmission method according to claim 4, wherein the measurement result of the SN-configured measurement object includes: the secondary neighbor cell measurement result of the second neighbor cell configured by the SN and/or the cell measurement result of the cell where the terminal equipment is currently located; the cell is the cell covered by the SN.
6. The data transmission method according to claim 1, wherein the content carried by the first message characterizes that the terminal device cannot be handed over to a first neighboring cell configured by the master base station MN, and includes:
the first message does not carry a main neighbor measurement result of the first neighbor;
or,
the first message carries the primary neighbor cell measurement result, and the primary neighbor cell measurement result is smaller than a preset primary cell switching threshold.
7. The method for data transmission according to claim 4, wherein before the first reconfiguration message is sent to the terminal equipment, further comprising:
sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearer between the SN release and the terminal equipment;
and receiving a release request response sent by the SN, wherein the release request response is used for notifying the MN that the bearer release is finished currently.
8. The data transmission method according to claim 2, wherein before the sending the first reconfiguration message to the terminal device, further comprising:
a second auxiliary base station modification request sent to the SN, wherein the auxiliary base station modification request carries a measurement result in the first message;
Receiving a modification request response sent by the SN, wherein the modification request response is used for notifying the MN that the modification request of the auxiliary base station is received;
receiving a second auxiliary base station release request sent by the SN; the second auxiliary base station release request is sent by the SN under the condition that the content carried by the first message is determined not to meet the SN switching condition; the request is used for requesting whether the MN releases the bearing with the terminal equipment or not;
and sending a secondary base station release confirmation message to the SN, wherein the secondary base station release confirmation message is used for indicating the bearer between the SN release and the terminal equipment.
9. A data transmission apparatus for use with a primary base station, the apparatus comprising:
the receiving module is used for receiving a first message reported under the condition that the terminal equipment with the user plane bearing type being the secondary cell group SCG bearing type or the SCG separation bearing type generates secondary cell group connection Failure SCG Failure; the first message is used for indicating the MN to determine whether the SN can be switched;
the adjusting module is used for adjusting the user plane bearing type of the terminal equipment to be a master cell group MCG bearing type under the condition that the content carried by the first message does not meet the preset auxiliary base station SN switching condition; the content carried by the first message does not meet a preset auxiliary base Station (SN) switching condition, which comprises the following steps: the content carried by the first message characterizes that the terminal equipment cannot be switched to a first neighboring cell configured by the master base station MN, and the first message includes any one of the following: the first message carries an auxiliary neighbor cell measurement result of the SN configured second neighbor cell, and the auxiliary neighbor cell measurement result is smaller than a preset auxiliary cell switching threshold; the first message does not carry the measurement result of the auxiliary neighbor cell and carries a first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; the cell is covered by the SN; the first message does not carry the measurement result of the auxiliary neighbor cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal equipment is currently located, and the second measurement result is smaller than the auxiliary cell switching threshold value.
10. A base station device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 8 when the computer program is executed.
11. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 8.
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