CN111148150A - 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
CN111148150A
CN111148150A CN201911314043.6A CN201911314043A CN111148150A CN 111148150 A CN111148150 A CN 111148150A CN 201911314043 A CN201911314043 A CN 201911314043A CN 111148150 A CN111148150 A CN 111148150A
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message
base station
cell
measurement result
auxiliary
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CN111148150B (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 Telecom Technology Guangzhou 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a data transmission method, a device, base station equipment and a storage medium.A main base station receives a first message reported by terminal equipment under the condition of SCG Failure of auxiliary cell group connection; and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group. 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 application relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, a base station device, and a storage medium.
Background
With the rapid development of the fifth generation mobile communication technology (5th generation mobile networks, abbreviated as 5G) (NRRadio Access, abbreviated as NR), before 5G is completely popularized, in order to enable a terminal in a transition period to enjoy high-speed data service experience brought by 5G, a Non-independent (NSA) networking mode is generally adopted, that is, a networking mode in which a 4G base station is used as a Master Node (MN) and a 5G base station is used as a Secondary base Station (SN). In one of the NSA networking modes, a signaling plane of a terminal device is transmitted through an MN, and a data plane of the terminal device is transmitted through an SN, and in the scheme, a Packet Data Convergence Protocol (PDCP) of a data radio bearer is established on an SN side, and meanwhile, a data plane service of the terminal is carried by establishing a Secondary Cell Group (SCG) separate bearer. 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 a main base station receives an SCG Failure reported by a terminal device, the main base station may select a new cell in an NR neighboring cell (NR Radio Access) according to a measurement result of the NR neighboring cell, that is, a 5G neighboring cell 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 detected from the SCG Failure.
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
In view of the above, it is necessary to provide a data transmission method, an apparatus, a base station device and a storage medium for solving the above technical problems.
A method of data transmission, said method comprising:
receiving a first message reported by terminal equipment under the condition of SCG Failure of auxiliary cell group connection;
and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group.
In one embodiment, the 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 into the version corresponding to the MCG bearing type;
and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing the completion of the switching of the current PDCP version of the terminal equipment.
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).
In one embodiment, the content carried by the first message does not satisfy the preset secondary base station SN switching condition, including:
the first message does not carry the measurement result of the main neighbor cell of the first neighbor cell configured by the main 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: the SN configures an auxiliary neighbor cell measurement result of a second neighbor cell and/or a cell measurement result of a cell where the terminal device is currently located; the cell is a cell covered by SN.
In one embodiment, the content carried by the first message does not satisfy the preset secondary base station SN switching condition, including:
the content representation terminal device carried by the first message cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of:
the first message carries an auxiliary neighbor cell measurement result of a second neighbor cell configured by the SN, 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 neighboring 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 SN;
the first message does not carry the measurement result of the auxiliary neighboring cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal device is currently located, and the second measurement result is smaller than the switching threshold of the auxiliary cell.
In one embodiment, the step of the content representation terminal device carried in the first message being unable to be switched to the first neighboring cell configured by the main base station MN includes:
the first message does not carry a primary neighbor cell measurement result of the first neighbor cell;
or,
the first message carries a main neighbor cell measurement result, and the main neighbor cell measurement result is smaller than a preset main cell switching threshold value.
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 bearing 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 informing the MN that the bearer release is currently completed.
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 is sent to the SN, and the auxiliary base station modification request carries the measurement result in the first message;
receiving a modification request response sent by the SN, wherein the modification request response is used for informing the MN that a secondary base station modification request 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 to release the bearer between the terminal equipment and the MN;
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 SN to release the bearer with the terminal equipment.
A data transmission apparatus, said apparatus comprising:
the receiving module is used for receiving a first message reported by the terminal equipment under the condition of SCG Failure of the auxiliary cell group connection;
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 comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the data transmission method when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the data transmission method.
According to the data transmission method, the data transmission device, the base station equipment and the storage medium, the main base station receives a first message reported by the terminal equipment under the condition that the SCG Failure occurs in the auxiliary cell group connection; and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group. The master base station adjusts the user plane bearing type of the terminal equipment to the MCG bearing type of the master cell group under the condition that the SN cannot be switched, so that the data service transmission of the terminal equipment can be completed through the master base station, the interruption of data transmission of the terminal equipment due to SCG Failure is avoided, and the system reliability is improved.
Drawings
FIG. 1 is a diagram of an exemplary data transmission method;
FIG. 2 is a flow diagram illustrating a method for data transmission according to one embodiment;
FIG. 3 is a flow chart illustrating a data transmission method according to another embodiment;
FIG. 4 is a flow chart illustrating a data transmission method according to another embodiment;
FIG. 5 is a flow chart illustrating a data transmission method according to another embodiment;
FIG. 6 is a block diagram showing the structure of a data transmission apparatus according to an embodiment;
FIG. 7 is a block diagram showing the structure of a data transmission apparatus according to an embodiment;
FIG. 8 is a block diagram showing the structure of a data transmission apparatus according to an embodiment;
fig. 9 is an internal configuration 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 is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The data transmission method provided by the application can be applied to the application environment shown in fig. 1. The terminal device 300 is connected to the main base station 100 and the auxiliary base station 200 in a dual-connection networking manner. 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 main base station 100 and the auxiliary base station 200 may be, but not limited to, base station devices of macro base stations, micro base stations, small base stations, and the like, and may be evolved Node bs (eNB or eNodeB) in LTE, or relay stations or access points, or base stations and Customer Premises Equipment (CPE) in a 5G network, and the like, and are not limited herein.
In one embodiment, as shown in fig. 2, a data transmission method is provided, which is described by taking the application of the method to the main base station 100 in fig. 1 as an example, and includes:
s101, receiving a first message reported by terminal equipment under the condition that SCG Failure occurs in the auxiliary cell group connection.
The deployment of a new generation mobile communication network is a gradual process, and an NSA networking mode can be adopted at the initial stage of building. For example, a 5G wireless system is connected to an existing LTE core network in a networking manner in which a 4G base station is used as a Master base station (MN for short) and a 5G base station is used as a Secondary base station (SN for short), so as to implement fast deployment and scheme verification of the 5G system.
In the NAS networking mode, the user plane bearer of the terminal equipment can be independently served by the MN or the SN, or can be served by the MN and the SN simultaneously; the MN is called a Master Cell Group (MCG for short) to carry the MN when serving, wherein the MCG is a serving Cell Group controlled by the MN; when served independently by an SN, is called SCG bearer, where SCG is a group of serving cells controlled by the SN; while being served by the MN and the SN is referred to as SCG split bearer. And when the terminal equipment fails in a wireless link between the terminal equipment and the SN under the SCG bearing mode or the SCG separation bearing mode, the SCG Failure is triggered.
After the terminal device triggers the SCG Failure, the first message may be reported to the MN. The main base station may receive the first message based on a bearer with the terminal device. The first message may be used to instruct the MN to determine whether the SN can be switched.
The first message may be scgfailureinformation nr, and the content carried by the first message may include an identifier of an SN corresponding to an SCG Failure, a trigger time of the SCG Failure, and 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 a cell covered by the MN or the SN based on the measurement configuration after the MN or the SN sends the measurement configuration to the terminal device before the terminal device triggers the SCG Failure, and the result is sent to the MN through the scgfailureinformation nr. For example, the MN may notify the measurement configuration message to the terminal device through a measConfig cell carried in the rrcconnectionreconfiguration message, and the terminal device may Measure the current serving cell, or determine whether measurement on the neighboring cell needs to be performed according to an s-Measure cell in the rrcconnectionreconfiguration message.
The measurement result may include different measurement quantities, and may include Reference Signal Receiving Power (RSRP), or Reference Signal Receiving Quality (RSRQ), where the type of the measurement result is not limited herein.
And S102, if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group.
After receiving the first message, the MN may determine whether the content carried by the first message satisfies the SN switching condition according to a preset SN switching condition. If the content carried by the first message meets the preset SN switching condition, the MN can ensure the data transmission of the terminal equipment by triggering the SN switching process; if the content carried by the first message does not meet the preset SN switching condition, the MN can adjust the user plane bearing type of the terminal equipment to be the MCG bearing type, and the user plane bearing of the terminal equipment is independently served through the MN.
The SN switching condition may be determined by a measurement result of each cell carried in the first message. Each cell may be a first neighbor cell configured by the MN, may also be a second neighbor cell configured by the SN, and may also include a current serving cell under the SN.
The SN switching condition may refer to that a cell that can be switched exists in a first neighboring cell configured by the MN, may also refer to that a cell that can be switched exists in a second neighboring cell configured by the SN, and may also 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 SN switching condition is not limited herein.
Under the condition that the content carried by the first message does not satisfy 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, notifying the terminal device to send the user plane data to the MN; or the bearer can be reestablished with the terminal equipment by modifying the configuration parameters; the above adjustment method is not limited herein.
According to the data transmission method, a main base station receives a first message reported by terminal equipment under the condition that SCG Failure occurs in the connection of an auxiliary cell group; and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group. The master base station adjusts the user plane bearing type of the terminal equipment to the MCG bearing type of the master cell group under the condition that the SN cannot be switched, so that the data service transmission of the terminal equipment can be completed through the master base station, the interruption of data transmission of the terminal equipment due to SCG Failure is avoided, and the system reliability is improved.
Fig. 3 is a schematic flow chart of a data transmission method in another embodiment, where this embodiment relates to a manner in which a master base station adjusts a user plane bearer type of a terminal device to a master cell group MCG bearer type, and on the basis of the foregoing embodiment, as shown in fig. 3, the foregoing S102 includes:
s201, sending a reconfiguration message to the terminal equipment; the reconfiguration message is used for instructing the terminal equipment to switch the packet data convergence protocol PDCP version to the 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 sequence number, and the like, and may also include a version switching manner, for example, whether partial switching or full switching is performed; 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). The mobility control info may be used to instruct the terminal device to modify or establish a bearer; the fullConfig-r9 is used to instruct the terminal device 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 the completion of the switching of the current PDCP version of the terminal equipment.
After receiving the reconfiguration message, the terminal device may 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 above procedure for configuring parameters may 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 SRB2 parameters and DRB parameters; the SRB1 parameter and the SRB2 parameter are parameters of a signaling plane bearer between the MN and the terminal device, and the DRB parameter is a parameter of a user plane bearer to be established between the MN and the terminal device.
After the MN completes the parameter configuration, the MN may further receive a data transmission state SN Status Transfer sent by the SN, where the 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 serial number; further, the MN may send a file release instruction to the SN, instructing the SN to release the 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 into 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 process, the data transmission continuity of the terminal equipment is guaranteed, and the system reliability is improved.
In an embodiment, in relation to a manner that the primary base station determines that the content carried by the first message does not satisfy the preset secondary base station SN switching condition, on the basis of the foregoing embodiment, the determining that the content carried by the first message does not satisfy the preset secondary base station SN switching condition may include: the first message does not carry the measurement result of the main neighbor cell of the first neighbor cell configured by the main 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 cell measurement result of the first neighbor cell configured by the main base station MN and the measurement result of the measurement object configured by the SN, the MN cannot determine a cell that can be switched according to the content carried by the first message, and thus the SN switching condition is not satisfied under this scenario.
Wherein the measurement result of the measurement object configured by the SN includes: the SN configures an auxiliary neighbor cell measurement result of a second neighbor cell and/or a cell measurement result of a cell where the terminal device is currently located; the cell is a cell covered by SN.
According to the data transmission method, under the condition that the first message does not carry the main neighbor cell measurement result of the first neighbor cell configured by the main base station MN and the measurement result of the measurement object configured by the SN, the main base station determines that the content carried by the first message does not meet the SN switching condition, so that the user plane bearing type of the terminal equipment is further adjusted to be MCG bearing, the data transmission continuity of the terminal equipment is ensured, and the system reliability 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 satisfy the SN switching condition, and on the basis of the above embodiment, the terminal device may further determine whether the SN of the terminal device can be switched to the second neighbor cell configured by the SN according to the measurement result of the measurement object configured by the SN when the content carried by the first message indicates that the terminal device cannot be switched to the first neighbor cell configured by the master base station MN.
The method for switching the content representation terminal device carried by the first message to the first neighboring cell configured by the MN includes: the first message does not carry a primary neighbor cell measurement result of the first neighbor cell; 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.
Specifically, the MN determining that the content representation terminal device carried by the first message cannot be switched to the second neighboring cell configured by the SN includes any one of the following:
the first message carries an auxiliary neighbor cell measurement result of a second neighbor cell configured by the SN, 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 neighboring 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 SN;
the first message does not carry the measurement result of the auxiliary neighboring cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal device is currently located, and the second measurement result is smaller than the switching threshold of the auxiliary cell.
When the measurement result of the measurement object configured by the SN carried in the first message is an auxiliary neighbor cell measurement result smaller than a preset auxiliary cell switching threshold, the master base station may consider that the SN cannot be switched to the second neighbor cell; the measurement result of the measurement object configured by the SN carried in the first message is a first measurement result corresponding to the working frequency band of the current cell, or a second measurement result corresponding to other working frequency bands smaller than the switching threshold of the auxiliary cell, and cannot satisfy the SN switching condition.
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 device to be MCG bearing, so that the data transmission continuity of the terminal device is ensured, and the system reliability is improved.
When the main base station MN determines whether to switch the SN according to the content carried by the first message, the main base station MN may determine, according to the content of the first message, a scene type where the terminal device generates the SCG Failure, for example, a case where the first message does not carry a main neighbor measurement result of the first neighbor configured by the main base station MN and a measurement result of a measurement object configured by the SN in the above embodiment is determined as a scene one; determining a scene which does not meet SN switching conditions under the condition that the content carried by the first message contains the measurement result as a scene two; in addition, the MN can also divide a scene that satisfies the SN switching condition according to the content carried by the first message.
Specifically, if the primary neighbor measurement result of the first neighbor 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 is located, and may determine that the SN is the third scenario; if the content representation terminal device carried by the first message cannot be switched to the first neighbor cell configured by the MN, but the auxiliary neighbor cell measurement result of the second neighbor cell configured by the SN carried by the terminal device is greater than or equal to the second threshold, the MN may switch the SN to the base station where the second neighbor cell configured by the SN is located, and may determine the scene as scene four; in addition, if the content carried by the first message indicates that the terminal device cannot be switched to the first neighboring cell configured by the MN, but carries a second measurement result corresponding to another working frequency band of the cell where the terminal device is currently located, and the second measurement result is greater than or equal to the auxiliary cell switching threshold, the MN may 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: MN sends configuration message to terminal device, the above reconfiguration message carries identification information of target SN; MN receives the configuration completion response returned by the terminal equipment, wherein the configuration completion response represents that the terminal equipment completes the configuration of the bearing parameters; MN sends reconfiguration complete message to target SN, the said reconfiguration complete message is used to inform target SN terminal device that the bearing parameter configuration has been completed; further, the MN may also receive a data transmission state SN Status Transfer sent by the SN; the MN can determine the initial position of data transmitted to the terminal equipment according to the serial number; and sending a file release instruction to the SN corresponding to the SCG Failure, and indicating the SN to release the uplink and downlink data of the terminal equipment.
When the MN adjusts the user plane bearer type of the terminal device to the MCG bearer type of the master cell group, or switches the SN to the base station where another cell is located, the MN may first control the SN to release the bearer with the terminal device. Specifically, in different scenarios, different bearer release procedures may be employed.
In an embodiment, when a scene type related to SCG Failure of a terminal device is scene one or scene three, a MN triggers a bearer release process, and on the basis of the foregoing embodiment, as shown in fig. 3, before the foregoing S201, the method further includes:
s301, sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the SN to release the bearer with the terminal equipment.
S302, receiving a release request response sent by the SN, wherein the release request response is used for informing the MN that the bearer release is currently completed.
In the data transmission method, the MN triggers the bearer release process 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, when a scene type related to SCG Failure of a terminal device is scene two or scene four, a process of releasing a bearer is triggered by an SN, and on the basis of the foregoing embodiment, as shown in fig. 4, before the foregoing S201, the method further includes:
s401, sending a second auxiliary base station modification request to the SN, wherein the auxiliary base station modification request carries the measurement result in the first message.
S402, receiving a modification request response sent by the SN, wherein the modification request response is used for informing the MN that the secondary base station modification request is received.
S403, 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 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 SN to release the bearing with the terminal equipment.
In 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 MN 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 various steps in the flow charts of fig. 2-5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-5 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other 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:
a receiving module 10, configured to receive a first message reported by a terminal device when an auxiliary cell group connection Failure SCG Failure occurs;
and an adjusting module 20, configured to adjust a user plane bearer type of the terminal device to an MCG bearer type of the master cell group when the content carried by the first message does not meet a preset secondary base station SN handover condition.
The data transmission device provided by the embodiment of the application can realize the method embodiment, the realization principle and the technical effect are similar, and the details are not repeated herein.
In an embodiment, on the basis of 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 into the version corresponding to the MCG bearing 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.
In one embodiment, on the basis of the above embodiments, 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 an embodiment, on the basis of the above embodiment, the content carried by the first message does not satisfy the preset secondary base station SN switching condition, which includes: the first message does not carry the measurement result of the main neighbor cell of the first neighbor cell configured by the main 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 measurement object configured by the SN includes: the SN configures an auxiliary neighbor cell measurement result of a second neighbor cell and/or a cell measurement result of a cell where the terminal device is currently located; the cell is a cell covered by SN.
In an embodiment, on the basis of the above embodiment, the content carried by the first message does not satisfy the preset secondary base station SN switching condition, which includes: the content representation terminal device carried by the first message cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of: the first message carries an auxiliary neighbor cell measurement result of a second neighbor cell configured by the SN, 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 neighboring 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 SN; the first message does not carry the measurement result of the auxiliary neighboring cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal device is currently located, and the second measurement result is smaller than the switching threshold of the auxiliary cell.
In an embodiment, on the basis of the foregoing embodiment, a method for switching a content representation terminal device carried by a first message to a first neighboring cell configured by a master base station MN includes: the first message does not carry a primary neighbor cell measurement result of the first neighbor cell; 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 an embodiment, on the basis of the above embodiment, as shown in fig. 8, the adjusting module 20 further includes a releasing unit 203 for: sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearing 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 informing the MN that the bearer release is currently completed.
In an embodiment, on the basis of the above embodiment, the releasing unit 203 is further configured to: a second auxiliary base station modification request is sent to the SN, and the auxiliary base station modification request carries the measurement result in the first message; receiving a modification request response sent by the SN, wherein the modification request response is used for informing the MN that a secondary base station modification request 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 to release the bearer between the terminal equipment and the MN; 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 SN to release the bearer with the terminal equipment.
The data transmission device provided by the embodiment of the application can realize the method embodiment, the realization principle and the technical effect are similar, and the details are not repeated herein.
For specific limitations of the data transmission device, reference may be made to the above limitations of the data transmission method, which are not described herein again. The modules in the data transmission device can be wholly or partially implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a base station apparatus is provided, an internal structure diagram of which may be as shown in fig. 9. The base station device 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, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the base station device is used for storing data transmission data. The network interface of the base station apparatus 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.
Those skilled in the art will appreciate that the structure shown in fig. 9 is a block diagram of only a portion of the structure relevant to the present application, and does not constitute a limitation on the base station apparatus to which the present application is applied, and a particular base station apparatus may include more or less components than those shown in the figure, or combine some components, or have a different arrangement of components.
In one embodiment, there is provided a base station device comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program implementing the steps of:
receiving a first message reported by terminal equipment under the condition of SCG Failure of auxiliary cell group connection;
and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group.
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 into the version corresponding to the MCG bearing type; and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing the completion of the switching of the current PDCP version of the terminal equipment.
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 satisfy the preset secondary base station SN switching condition, including: the first message does not carry the measurement result of the main neighbor cell of the first neighbor cell configured by the main 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: the SN configures an auxiliary neighbor cell measurement result of a second neighbor cell and/or a cell measurement result of a cell where the terminal device is currently located; the cell is a cell covered by SN.
In one embodiment, the content carried by the first message does not satisfy the preset secondary base station SN switching condition, including: the content representation terminal device carried by the first message cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of: the first message carries an auxiliary neighbor cell measurement result of a second neighbor cell configured by the SN, 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 neighboring 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 SN; the first message does not carry the measurement result of the auxiliary neighboring cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal device is currently located, and the second measurement result is smaller than the switching threshold of the auxiliary cell.
In one embodiment, the processor, when executing the computer program, further performs the steps of: the first message does not carry a primary neighbor cell measurement result of the first neighbor cell; 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, 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 bearing 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 informing the MN that the bearer release is currently completed.
In one embodiment, the processor, when executing the computer program, further performs the steps of: a second auxiliary base station modification request is sent to the SN, and the auxiliary base station modification request carries the measurement result in the first message; receiving a modification request response sent by the SN, wherein the modification request response is used for informing the MN that a secondary base station modification request 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 to release the bearer between the terminal equipment and the MN; 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 SN to release the bearer with the terminal equipment.
The implementation principle and technical effect of the base station device provided in this embodiment are similar to those of the method embodiments described above, and are not described herein again.
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 of SCG Failure of auxiliary cell group connection;
and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the master cell group.
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 into the version corresponding to the MCG bearing type; and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing the completion of the switching of the current PDCP version of the terminal equipment.
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 satisfy the preset secondary base station SN switching condition, including: the first message does not carry the measurement result of the main neighbor cell of the first neighbor cell configured by the main 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: the SN configures an auxiliary neighbor cell measurement result of a second neighbor cell and/or a cell measurement result of a cell where the terminal device is currently located; the cell is a cell covered by SN.
In one embodiment, the content carried by the first message does not satisfy the preset secondary base station SN switching condition, including: the content representation terminal device carried by the first message cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of: the first message carries an auxiliary neighbor cell measurement result of a second neighbor cell configured by the SN, 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 neighboring 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 SN; the first message does not carry the measurement result of the auxiliary neighboring cell, and carries a second measurement result corresponding to other working frequency bands of the cell where the terminal device is currently located, and the second measurement result is smaller than the switching threshold of the auxiliary cell.
In one embodiment, the computer program when executed by the processor further performs the steps of: the first message does not carry a primary neighbor cell measurement result of the first neighbor cell; 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, 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 bearing 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 informing the MN that the bearer release is currently completed.
In one embodiment, the computer program when executed by the processor further performs the steps of: a second auxiliary base station modification request is sent to the SN, and the auxiliary base station modification request carries the measurement result in the first message; receiving a modification request response sent by the SN, wherein the modification request response is used for informing the MN that a secondary base station modification request 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 to release the bearer between the terminal equipment and the MN; 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 SN to release the bearer with the terminal equipment.
The implementation principle and technical effect of the computer-readable storage medium provided by this embodiment are similar to those of the above-described method embodiment, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile 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), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A method of data transmission, the method comprising:
receiving a first message reported by terminal equipment under the condition of SCG Failure of auxiliary cell group connection;
and if the content carried by the first message does not meet the preset SN switching condition of the auxiliary base station, adjusting the user plane bearing type of the terminal equipment to be the MCG bearing type of the main cell group.
2. The data transmission method according to claim 1, wherein the adjusting the user plane bearer type of the terminal device to a 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 into the version corresponding to the MCG bearing type;
and receiving a reconfiguration response sent by the terminal equipment, wherein the reconfiguration response is used for representing that the current PDCP version switching of the terminal equipment is completed.
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 satisfy a preset secondary base Station (SN) switching condition, and the method comprises:
the first message does not carry a main neighbor cell measurement result of the first neighbor cell configured by the main 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 SN configures an auxiliary neighbor cell measurement result of a second neighbor cell, and/or a cell measurement result of a cell in which the terminal device is currently located; the cell is covered by the SN.
6. The data transmission method according to claim 2 or 3, wherein the content carried by the first message does not satisfy a preset secondary base Station (SN) switching condition, and the method comprises:
the content carried by the first message represents that the terminal device cannot be switched to a first neighboring cell configured by the main base station MN, and the first message includes any one of:
the first message carries an auxiliary neighbor cell measurement result of a second neighbor cell configured by the SN, 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 neighboring cell and carries a first measurement result corresponding to the working frequency band of the cell where the terminal equipment is currently located; wherein the cell is a cell covered by the SN;
the first message does not carry the measurement result of the auxiliary neighboring cell, and carries second measurement results corresponding to other working frequency bands of the cell where the terminal device is currently located, and the second measurement results are smaller than the switching threshold of the auxiliary cell.
7. The data transmission method according to claim 6, wherein the content carried in the first message indicates that the terminal device cannot be switched to the first neighbor cell configured by the master base station MN, and includes:
the first message does not carry a primary neighbor cell measurement result of the first neighbor cell;
or,
the first message carries the measurement result of the main neighbor cell, and the measurement result of the main neighbor cell is smaller than a preset main cell switching threshold value.
8. The data transmission method according to claim 4, wherein before the sending the first reconfiguration message to the terminal device, the method further comprises:
sending a first auxiliary base station release request to the SN, wherein the first auxiliary base station release request is used for indicating the bearing 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 informing the MN that the bearer release is currently completed.
9. The data transmission method according to claim 6 or 7, wherein before sending the first reconfiguration message to the terminal device, the method further comprises:
a second secondary base station modification request sent to the SN, where the secondary base station modification request carries the measurement result in the first message;
receiving a modification request response sent by the SN, wherein the modification request response is used for informing the MN that the secondary base station modification request is received;
receiving a second auxiliary base station release request sent by the SN; the second secondary 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 to release the bearer with the terminal equipment from the MN;
and sending an auxiliary base station release confirmation message to the SN, wherein the auxiliary base station release confirmation message is used for indicating the bearing between the SN release and the terminal equipment.
10. A data transmission apparatus, characterized in that the apparatus comprises:
the receiving module is used for receiving a first message reported by the terminal equipment under the condition of SCG Failure of the auxiliary cell group connection;
and the adjusting module is used for adjusting the user plane bearer type of the terminal equipment to be a master cell group MCG bearer type under the condition that the content carried by the first message does not meet the preset SN switching condition of the secondary base station.
11. A base station device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any of claims 1 to 9 when executing the computer program.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 9.
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