CN110022588B

CN110022588B - SCG Failure processing method and device

Info

Publication number: CN110022588B
Application number: CN201810018086.9A
Authority: CN
Inventors: 刘爱娟; 陈瑞卡; 张大钧; 梁靖
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-01-09
Filing date: 2018-01-09
Publication date: 2020-12-08
Anticipated expiration: 2038-01-09
Also published as: WO2019137161A1; CN110022588A

Abstract

The invention discloses a method and equipment for processing SCG Failure, wherein the method comprises the following steps that an auxiliary base station SN receives a first message for indicating that user equipment UE generates SCG Failure of an auxiliary cell group, wherein the first message is generated after a main base station MN receives the SCG Failure reported by the UE, and carries a measurement result obtained when the UE generates the SCG Failure; and the service cell of the UE in the SN determines to perform primary and secondary cell PSCELL switching according to the measurement result so that the UE is accessed to the switched target PSCELL, or the SN determines to perform SN switching according to the measurement result so that the UE is accessed to the switched target SN.

Description

SCG Failure processing method and device

Technical Field

The invention relates to the technical field of communication, in particular to a method and equipment for processing SCG Failure.

Background

In an LTE (Long term evolution ) system, that is, a 4G Network, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) is composed of a plurality of enodebs (Evolved Node bs), the enodebs are connected to an EPC (Evolved Packet Core, Core Packet Network evolution) through S1 interfaces, the enodebs are connected to each other through X2 interfaces, and in order to support higher data throughput, a UE user equipment may implement dual connectivity through two enodebs.

Similar to dual connection of an LTE system, in a 5G system, Tight coupling interoperation light Interworking of an eNodeB and a 5G base station gNB is also supported, in a scene of Tight coupling of LTE and 5G, when a network between UE and the gNB is disconnected, SCG Failure of an auxiliary cell group occurs to the UE, and at present, when the SCG Failure occurs to the UE, how to process the scene of the SCG Failure does not have a complete solution.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for processing SCG Failure, which are used for solving the problem that no complete solution is available for processing a scene of the SCG Failure when the SCG Failure occurs in UE at present.

To this end, in a first aspect, an embodiment of the present invention provides a method for processing an SCG Failure, including:

the method comprises the steps that an auxiliary base station SN receives a first message used for indicating user equipment UE to generate an auxiliary cell group Failure SCG Failure, wherein the first message is generated after a main base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained by the UE when the SCG Failure occurs;

the serving cell of the UE in the SN determines to perform PSCELL switching of a primary cell and a secondary cell according to the measurement result so as to enable the UE to access a switched target PSCELL, or,

and the SN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN.

Optionally, when the SN determines to perform PSCELL handover in the primary and secondary cells according to the measurement result, the method further includes:

the SN sends a second message to the MN, the second message carries target PSCELL configuration information distributed by the SN for the UE, the second message is used for indicating the MN to send the target PSCELL configuration information to the UE, and the target PSCELL configuration information is used for the UE to perform configuration updating so as to access the target PSCELL.

Optionally, when the SN determines to perform SN handover according to the measurement result, the method further includes:

the SN determines the identification ID of the target SN;

and the SN sends a third message carrying the ID to the MN, wherein the third message is used for indicating the MN to acquire target SN configuration information distributed by the target SN for the UE from the target SN according to the ID, and the target SN configuration information is used for the UE to perform configuration updating so as to access the target SN.

Optionally, after the SN determines to perform PSCELL handover in the primary and secondary cells according to the measurement result, the method includes:

the SN receives a fourth message sent by the MN, wherein the fourth message is used for indicating data Forwarding between the SN and the MN; or

After the SN determines to perform SN switching according to the measurement result, the method comprises the following steps:

and the SN receives a fifth message sent by the MN, wherein the fifth message is used for indicating the SN to perform Date Forwarding with the target SN.

Optionally, before the secondary base station SN receives the first message for indicating that the user equipment UE has the secondary cell group Failure SCG Failure, the method further includes:

the SN receives a release message which is sent by the MN and requests to release the SN;

and the SN sends a message used for indicating that the MN releases the SN to the MN.

In a second aspect, an embodiment of the present invention provides a method for processing an SCG Failure, including:

the method comprises the steps that a main base station MN receives an indication message which is reported by user equipment UE and used for indicating the UE to generate SCG Failure, wherein the indication message carries a measurement result obtained by the UE when the UE generates the SCG Failure;

and the MN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN.

Optionally, before the MN determines to perform SN handover according to the measurement result, the method includes:

the MN sends a request message to the target SN, wherein the request message is used for requesting the UE to be switched to the target SN;

and the MN receives configuration information fed back by the target SN based on the request message, wherein the configuration information is information which is distributed to the UE by the target SN and is used for updating the configuration of the UE so as to access the target SN.

and the MN sends a release message for releasing the source SN to the source SN, wherein the source SN is the SN accessed by the UE before SCG Failure occurs.

In a third aspect, an embodiment of the present invention provides a secondary base station SN device, including:

the receiving unit is used for receiving a first message used for indicating that the UE generates SCG Failure, wherein the first message is generated after the main base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained by the UE when the SCG Failure occurs;

a first determining unit, configured to determine, according to the measurement result, to perform PSCELL handover of the SN, so that the UE accesses a target PSCELL after handover, or,

and a second determining unit, configured to determine, according to the measurement result, to perform SN handover, so that the UE accesses the target SN after handover.

Optionally, the first determining unit is further configured to:

and sending a second message to the MN, wherein the second message carries target PSCELL configuration information distributed by SN for the UE, the second message is used for indicating the MN to send the target PSCELL configuration information to the UE, and the target PSCELL configuration information is used for the UE to perform configuration updating so as to access the target PSCELL.

Optionally, the second determining unit is further configured to:

determining the identification ID of the target SN;

and sending a third message carrying the ID to the MN, wherein the third message is used for indicating the MN to acquire target SN configuration information distributed by the target SN for the UE from the target SN according to the ID, and the target SN configuration information is used for the UE to perform configuration updating so as to access the target SN.

Optionally, the receiving unit is further configured to:

receiving a fourth message sent by the MN, wherein the fourth message is used for indicating data Forwarding between the SN and the MN; or

And receiving a fifth message sent by the MN, wherein the fifth message is used for indicating the SN to perform Date Forwarding with the target SN.

Optionally, the receiving unit is further configured to:

receiving a release message which is sent by the MN and requests to release the SN;

and sending a message for indicating that the MN is rejected to release the SN to the MN.

In a fourth aspect, an embodiment of the present invention provides a primary base station MN device, including:

the device comprises a receiving unit and a processing unit, wherein the receiving unit is used for receiving an indication message which is reported by User Equipment (UE) and is used for indicating the UE to generate SCG Failure, and the indication message carries a measurement result obtained when the UE generates the SCG Failure;

and the determining unit is used for determining SN switching according to the measuring result so that the UE is accessed to the switched target SN.

Optionally, the method includes:

a sending unit, configured to send a request message to the target SN, where the request message is used to request that the UE be switched to the target SN;

the receiving unit is further configured to receive configuration information fed back by the target SN based on the request message, where the configuration information is information that is allocated to the UE by the target SN and used for the UE to perform configuration update so as to access the target SN.

Optionally, the sending unit is further configured to:

and sending a release message for releasing the source SN to the source SN, wherein the source SN is an SN accessed before the SCG Failure occurs to the UE.

In a fifth aspect, an embodiment of the present invention provides an apparatus for processing an SCG Failure, including:

at least one processor, and

a memory coupled to the at least one processor;

wherein the memory stores instructions executable by the at least one processor, and the at least one processor performs the method of the first or second aspect by executing the instructions stored by the memory.

In a sixth aspect, an embodiment of the present invention provides a readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the SCG Failure processing method according to the first aspect or the second aspect.

One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:

according to the technical scheme, the method comprises the steps that a first message used for indicating the occurrence of SCG Failure of the auxiliary cell group of the user equipment UE is received at an auxiliary base station SN, wherein the first message is information generated after a main base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained when the SCG Failure occurs to the UE; and the SN determines to switch the primary cell and the secondary cell PSCELL according to the measurement result so as to enable the UE to access the switched target PSCELL, or determines to switch the SN according to the measurement result so as to enable the UE to access the switched target SN, so that the problem that a complete solution does not exist for how to process the SCG Failure scene when the SCG Failure occurs in the UE at present is effectively solved.

In addition, the method in the embodiment of the invention includes that a main base station MN receives an indication message which is reported by user equipment UE and is used for indicating the UE to generate SCG Failure, wherein the indication message carries a measurement result obtained when the UE generates the SCG Failure; the MN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN, therefore, another SCG Failure processing method is provided, the problem that how to process the SCG Failure scene when the UE generates the SCG Failure at present is solved, a complete solution is not provided, and the method has the effective effect of diversity of SCG Failure processing modes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is two architecture diagrams of an LTE and 5G core network provided in an embodiment of the present invention under a scenario of tight coupling interoperation;

FIG. 2 is a flowchart of a method for processing an SCG Failure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of signal transmission according to an embodiment of the present invention;

FIG. 4 is a flow chart of some steps that may also be performed in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of still another signal transmission provided in the embodiment of the present invention;

FIG. 6 is a flow chart of further steps that may also be performed in embodiments of the present invention;

FIG. 7 is a flowchart illustrating another SCG Failure processing method according to an embodiment of the present invention;

FIG. 8 is a flow chart of further steps that may also be performed in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another signal transmission provided in the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the technical solutions of the present invention. All other embodiments obtained by a person skilled in the art without any creative effort based on the embodiments described in the present document belong to the protection scope of the technical solution of the present invention.

Referring to fig. 1, fig. 1 is two architecture diagrams of LTE and 5G core networks under a scenario of tightly coupled Interworking light Interworking, where in the two architecture diagrams, a base station eNB under the 4G network is used as a master base station MN, i.e., MeNB, a base station nrgbb under the 5G core network is used as an auxiliary base station SN, the auxiliary base station SN may be connected to the 4G core network through the LTE base station, i.e., the master base station MN (shown in a in fig. 1), and the auxiliary base station SN and the master base station may also be both connected to the 5G core network (shown in b in fig. 1).

Referring to fig. 2, a processing method of SCG Failure applied in a tightly coupled interoperable light Interworking scenario between an LTE core network and a 5G core network shown in fig. 1 is provided in an embodiment of the present invention, and the method includes:

step S101: the method comprises the steps that an auxiliary base station SN receives a first message used for indicating user equipment UE to generate an auxiliary cell group Failure SCG Failure, wherein the first message is generated after a main base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained by the UE when the SCG Failure occurs;

step S102: the serving cell of the UE in the SN determines to perform PSCELL switching of a primary cell and a secondary cell according to the measurement result so as to enable the UE to access a switched target PSCELL, or,

step S103: and the SN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN.

The method in the embodiment of the invention executes the step S101, that is, the auxiliary base station SN receives a first message for indicating the UE to generate the SCG Failure, wherein the first message is information generated after the main base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained when the UE generates the SCG Failure.

Referring to fig. 3, in practical application, when a network between a UE and a secondary base station SN is disconnected, the UE may generate SCG Failure, and at this time, the UE may report the generated SCG Failure and a measurement result obtained when the UE generates SCG Failure to a primary base station MN, and when the MN receives the SCG Failure reported by the UE, the MN may send a message that the UE generates SCG Failure to the SN.

After the SN receives the RRC Transfer message sent by the MN, the SN may select to perform PSCELL switching of the SN itself or select to perform SN switching according to a measurement result obtained when the SCG Failure occurs by the UE carried in the RRC Transfer message.

Specifically, when the SN selects to perform PSCELL handover of the SN itself according to a measurement result obtained when the SCG Failure occurs in the UE carried in the RRC Transfer message, the method in the embodiment of the present invention may execute step S102: and the SN determines to switch the primary cell PSCELL and the secondary cell PSCELL of the SN according to the measurement result so as to enable the UE to access the switched target PSCELL.

Please refer to fig. 3, in a specific practical process, when the SN determines to perform PSCELL handover of the SN itself according to the measurement result, the SN may further notify the MN by sending a SgNB Change Required message to the MN: the SN switches the PSCELL, after the MN receives the SgNB Change Required message sent by the SN, the MN can also feed back to the SN to determine that the message for switching the PSCELL is received by the SN, and in a specific practical process, the MN can feed back to the SN through the SgNB Change Confirm message to determine that the message for switching the PSCELL is received by the SN.

When the SN determines to perform PSCELL handover in the primary and secondary cells according to the measurement result, the method in the embodiment of the present invention may further perform the following steps:

step A: the SN sends a second message to the MN, the second message carries target PSCELL configuration information distributed by the SN for the UE, the second message is used for indicating the MN to send the target PSCELL configuration information to the UE, and the target PSCELL configuration information is used for the UE to perform configuration updating so as to access the target PSCELL.

In practical applications, when the SN determines to perform PSCELL handover in the primary and secondary cells according to the measurement result, the SN may further allocate, to the UE, configuration information corresponding to a target PSCELL to be handed over (the configuration information may be referred to as a resource allocated to the UE by the target PSCELL), where for convenience of description, the configuration information is referred to as target PSCELL configuration information, the SN may send the target PSCELL configuration information to the MN in an encoded RRC corresponding message of NR, and after the MN receives the encoded RRC corresponding message of NR sent by the SN, the MN may forward the encoded RRC corresponding message of NR to the UE in an RRC Connection Reconfiguration message.

After receiving the RRC Connection Reconfiguration message sent by the MN, the UE may obtain a coded RRC corresponding message of NR from the RRC Connection Reconfiguration message, and further obtain, from the coded RRC corresponding message of NR, target PSCELL configuration information allocated by the SN for the UE, and the UE performs configuration update by using the target PSCELL configuration information, and after the configuration update is completed, the UE may access the target PSCELL.

In practical applications, after receiving the RRC Connection Reconfiguration message sent by the MN, the UE may further feed back, to the MN, a determination message that confirms that the configuration update is completed by using the target PSCELL configuration information in the encoded NR RRC corresponding message carried in the RRC Connection Reconfiguration message, for example, the UE may send the RRC Connection Reconfiguration message to the MN, and further notify the MN: the UE confirms that the RRC Connection Reconfiguration message is received and completes the update of the target PSCELL configuration information.

The method in the embodiment of the invention can also execute the following steps:

and B: and the SN receives a fourth message sent by the MN, wherein the fourth message is used for indicating data Forwarding between the SN and the MN.

In the process of switching the primary and secondary cells PSCELL of the SN, if data forwarding is needed, the MN may further send a message for assisting the SN to perform data forwarding of the target PSCELL to the SN, and in a specific practical process, the MN may assist data forwarding between the MN and the SN by sending an SN Status Transfer message to the SN, and of course, the SN Status Transfer message may also carry information indicating to release the source PSCELL (PSCELL to which the UE has accessed before switching). In practical applications, the SN determines to perform PSCELL switching according to the measurement result, and if a Path Switch process is required to be performed by the target PSCELL, the Path Switch may be executed, which is not discussed herein.

Specifically, when the SN selects to perform SN handover according to a measurement result obtained when the SCG Failure occurs in the UE carried in the RRC Transfer message, the method in the embodiment of the present invention may execute step S103: and the SN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN.

Referring to fig. 4, when the SN determines to perform SN handover according to the measurement result, the method in the embodiment of the present invention may further perform the following steps:

step 201: the SN determines the identification ID of the target SN;

step 202: and the SN sends a third message carrying the ID to the MN, wherein the third message is used for indicating the MN to acquire target SN configuration information distributed by the target SN for the UE from the target SN according to the ID, and the target SN configuration information is used for the UE to perform configuration updating so as to access the target SN.

Please refer to fig. 5 continuously, in a specific practical process, when the SN (source S-SgNB shown in fig. 5) determines to perform SN handover according to the measurement result, the SN may further determine an identifier ID of a target SN to be handed over, the T-SgNB in fig. 5 represents the target SN, and after the SN obtains the ID of the target SN to be handed over, the SN may further notify the MN by sending a SgNB Change Required message to the MN: and the SN switches the SN, and simultaneously the SgNB Change Required message carries the ID of the target SN, so that after the MN receives the SgNB Change Required message, the ID of the target SN is obtained from the SgNB Change Required message.

After the MN acquires the ID of the target SN from the SgNB Change Required message, the MN may send, to the target SN, configuration information (the configuration information may be referred to as the target SN as a resource allocated to the UE) requesting the target SN to allocate the target SN to the UE according to the ID.

After the target SN allocates the target SN configuration information to the UE, the target SN may send the allocated target SN configuration information to the MN in an encoded NR RRC corresponding message, and after the MN receives the encoded NR RRC corresponding message sent by the target SN, the MN may forward the encoded NR RRC corresponding message to the UE in an RRC Connection Reconfiguration message.

After receiving the RRC Connection Reconfiguration message sent by the MN, the UE may obtain the encoded RRC corresponding message of the NR from the RRC Connection Reconfiguration message, further obtain target SN configuration information allocated to the UE by the target SN from the encoded RRC corresponding message of the NR, perform configuration update by using the target SN configuration information, and after the configuration update is completed, the UE may access the target SN.

Similarly, after receiving the RRC Connection Reconfiguration message sent by the MN, the UE may also feed back to the MN a confirmation message RRC Connection Reconfiguration Complete message that confirms that the RRC Connection Reconfiguration message and the confirmation message RRC Connection Reconfiguration Complete message that completes configuration update using the target SN configuration information have been received.

and C: and the SN receives a fifth message sent by the MN, wherein the fifth message is used for indicating the SN and the target SN to carry out data Forwarding.

In the process of SN switching, if data forwarding between the SN and the target SN is required, the MN may further send information for assisting the SN and the target SN in data forwarding to the SN, and in a specific practical process, the MN may assist data forwarding between the target SN and the SN by sending an SN Status Transfer message to the SN, and of course, the SN Status Transfer message may also carry information indicating to release the SN, that is, the source SN (SN accessed by the UE before switching). In practical application, the SN determines to perform SN switching according to the measurement result, and if a Path Switch process with the target SN is further required, the Path Switch may also be executed, which is not discussed herein.

Referring to fig. 6, in practical applications, before the step S101, the method for processing the SCG Failure according to the embodiment of the present invention further includes the following steps:

step S301: the SN receives a release message which is sent by the MN and requests to release the SN;

step S302: and the SN sends a message used for indicating that the MN releases the SN to the MN.

In practical application, after the SCG Failure occurs in the UE and the MN receives the SCG Failure reported by the UE, the implementation may be performed in the manner as described in the embodiment of the present invention: that is, the MN directly obtains a measurement result when the UE generates SCG Failure and the UE generates SCG Failure, and sends the measurement result to the SN, and the SN determines to perform primary and secondary cell PSCELL switching based on the received measurement result, so that the UE accesses to the target PSCELL after switching, or the SN determines to perform SN switching according to the measurement result, so that the UE accesses to the target SN after switching, and may also perform the following steps:

that is, after the MN receives SCG Failure reported by the UE and obtains the measurement result when the UE generates SCG Failure, the MN may also decide to release the release SN by itself, at this time, the MN may release a release message of the SN to the SN, after receiving the release message, the SN may reject the request of the MN to release the SN, and at this time, the SN may send a message for instructing to reject the MN to release the SN to the MN.

After the SN sends a message indicating that the MN rejects the release of the SN to the MN, the MN may send to the SN a measurement result obtained when the SCG Failure occurs in the UE and the SCG Failure occurs in the UE, and then the SN determines to perform PSCELL handover in the primary and secondary cells based on the received measurement result, so that the UE accesses the target PSCELL after handover, or determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after handover, which is not described repeatedly herein.

Referring to fig. 7, another SCG Failure processing method according to an embodiment of the present invention includes:

step S401: the method comprises the steps that a main base station MN receives an indication message which is reported by user equipment UE and used for indicating the UE to generate SCG Failure, wherein the indication message carries a measurement result obtained by the UE when the UE generates the SCG Failure;

step S402: and the MN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN.

The method in the embodiment of the present invention executes step S101: the method comprises the steps that a main base station MN receives an indication message which is reported by user equipment UE and used for indicating the UE to generate SCG Failure, wherein the indication message carries a measurement result obtained by the UE when the UE generates the SCG Failure;

in practical application, when a network between the UE and the source SN is disconnected, the UE may generate SCG Failure, and at this time, the UE may report the generated SCG Failure and a measurement result obtained when the UE generates SCG Failure to the master base station MN, and after the MN receives the SCG Failure reported by the UE and the measurement result obtained when the UE generates SCG Failure, the MN may also decide to Release the Release source SN, that is, perform SN switching (SN Change), where the source SN is the SN where the UE was before the SCG Failure.

Referring to fig. 8, in practical applications, before the method in the embodiment of the present invention performs step S402, the following steps may also be performed:

step S403: the MN sends a request message to the target SN, wherein the request message is used for requesting the UE to be switched to the target SN;

step S404: and the MN receives configuration information fed back by the target SN based on the request message, wherein the configuration information is information which is distributed to the UE by the target SN and is used for updating the configuration of the UE so as to access the target SN.

Please refer to fig. 9, when the MN decides a Release source SN by itself, that is, performs SN switching, the MN may send a Request message to a target SN, where the Request message is used to Request to switch the UE to the target SN, and in a specific practical process, the MN may send, to the target SN, a Request message used to Request to switch the UE to the target SN through an SgNB Addition Request message, and meanwhile, the SgNB Addition Request message carries a measurement result obtained when the SCG Failure occurs to the UE.

After receiving the SgNB Addition Request message, the target SN may refer to a measurement result carried in the SgNB Addition Request message, and check whether the target SN currently has a resource that can be allocated to the UE, if the target SN currently has a resource that can be allocated to the UE, the target SN allocates a resource (which may be referred to as configuration information) to the sub-UE, the target SN may send the resource allocated to the UE to the MN as an encoded RRC corresponding message of NR, and after receiving the encoded RRC corresponding message of NR sent by the target SN, the MN may forward the encoded RRC corresponding message of NR to the UE as an RRC Connection Reconfiguration message.

After receiving the RRC Connection Reconfiguration message sent by the MN, the UE may obtain the encoded RRC corresponding message of the NR from the RRC Connection Reconfiguration message, and further obtain the resource allocated to the UE by the target SN from the encoded RRC corresponding message of the NR, and the UE performs configuration update by using the resource allocated by the target SN, and after the configuration update is completed, the UE may access the target SN.

In practical applications, before the method in the embodiment of the present invention performs step S402, the following steps may also be performed:

step D: and the MN sends a release message for releasing the source SN to the source SN, wherein the source SN is the SN accessed by the UE before SCG Failure occurs.

In the embodiment of the present invention, the execution sequence of the step D, the step S403, and the step S404 is not limited at all.

When the MN decides to release the source SN itself, that is, performs SN switching, the MN may further send a release message requesting release of the source SN to the source SN, where the release message may also carry an indication of SCG Failure of the UE and a measurement result obtained when the UE sends the SCG Failure, and after receiving the release message sent by the MN, the source SN may also feed back a message indicating that the MN allows the MN to release the source SN to the MN.

After the method in the embodiment of the present invention performs step S401, step S402 may be performed: and the MN determines to carry out SN switching according to the measurement result so that the UE is accessed to the switched target SN.

That is, after receiving the message that the source SN indicates that the MN is allowed to release the source SN, the MN may release the source SN and perform SN switching, and after the UE completes configuration and update using the resource allocated by the target SN, the UE may access the target SN after SN switching.

Similarly, in the process of SN switching, if data forwarding between the SN and the target SN is required, the MN may further send information for assisting the data forwarding between the source SN and the target SN to the source SN, and in a specific practical process, the MN may assist data forwarding between the target SN and the source SN by sending an SN Status Transfer message to the SN, and of course, the SN Status Transfer message may also carry information indicating to release the source SN. Similarly, in practical applications, the MN determines to perform SN switching according to the measurement result, and if a Path Switch process with the target SN is further required, the Path Switch may also be executed, which is not discussed herein.

Therefore, by the method, a first message used for indicating that the user equipment UE generates the SCG Failure of the secondary cell group is received at the secondary base station SN, wherein the first message is information generated after the primary base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained when the UE generates the SCG Failure; and the SN determines to switch the primary cell and the secondary cell PSCELL according to the measurement result so as to enable the UE to access the switched target PSCELL, or determines to switch the SN according to the measurement result so as to enable the UE to access the switched target SN, so that the problem that a complete solution does not exist for how to process the SCG Failure scene when the SCG Failure occurs in the UE at present is effectively solved.

Based on the same inventive concept, an embodiment of the present invention provides an auxiliary base station SN device, where specific implementation of the SCG Failure processing method of the device may refer to the description of the foregoing method embodiment, and repeated details are not described again, and the device includes:

a first determining unit, configured to determine, according to the measurement result, to perform PSCELL handover on a primary cell and a secondary cell, so that the UE accesses a target PSCELL after handover, or,

Optionally, the first determining unit is further configured to:

Optionally, the second determining unit is further configured to:

determining the identification ID of the target SN;

Optionally, the receiving unit is further configured to:

Based on the same inventive concept, an embodiment of the present invention provides a primary base station MN device, and for specific implementation of the SCG Failure processing method of the device, reference may be made to the description of the foregoing method embodiment, and repeated details are not described again, and the device includes:

the device comprises a receiving unit and a processing unit, wherein the receiving unit is used for receiving an indication message which is reported by User Equipment (UE) and is used for indicating the UE to generate SCG Failure, and the indication message carries a measurement result which is obtained by the UE when the UE generates the SCG Failure;

Optionally, the method includes:

Optionally, the sending unit is further configured to:

Based on the same inventive concept, an embodiment of the present invention provides an apparatus for processing an SCG Failure, including:

at least one processor, and

a memory coupled to the at least one processor;

wherein the memory stores instructions executable by the at least one processor, and the at least one processor executes the processing method of the SCG Failure as described above by executing the instructions stored by the memory.

Based on the same inventive concept, an embodiment of the present invention provides a readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of performing the processing method of SCG Failure as described above.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A SCG Failure processing method is characterized by comprising the following steps:

receiving a release message which is sent by the MN and requests to release the SN by the auxiliary base station SN;

the SN sends a message used for indicating that the MN releases the SN to the MN;

the SN receives a first message used for indicating the UE to generate SCG Failure, wherein the first message is generated after a main base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained by the UE when the SCG Failure occurs;

2. The method of claim 1, wherein when the serving cell of the UE in the SN determines to perform PSCELL handover based on the measurement result, the method further comprises:

3. The method of claim 1, wherein when the SN determines to perform SN switching based on the measurement result, the method further comprises:

the SN determines the identification ID of the target SN;

4. A SCG Failure processing method is characterized by comprising the following steps:

the MN sends a release message for releasing the source SN to a source SN, wherein the source SN is an SN accessed by the UE before SCG Failure occurs;

5. The method of claim 4, before the MN determines to perform SN switching based on the measurement results, comprising:

6. A secondary base Station (SN) device, comprising:

a receiving unit, configured to receive a release message sent by a MN to request release of the SN; sending a message to the MN indicating that the MN is rejected to release the SN;

the receiving unit is further configured to receive a first message used for indicating that a secondary cell group Failure SCG Failure occurs in the UE, where the first message is generated after the primary base station MN receives the SCG Failure reported by the UE, and the first message carries a measurement result obtained by the UE when the SCG Failure occurs in the UE;

7. The device of claim 6, wherein the first determination unit is further to:

8. The device of claim 7, wherein the second determination unit is further to:

determining the identification ID of the target SN;

9. A master base station MN device, comprising:

a sending unit, configured to send a release message for releasing a source SN to the source SN, where the source SN is an SN accessed before the SCG Failure occurs to the UE;

10. The apparatus of claim 9, comprising:

the sending unit is configured to send a request message to the target SN, where the request message is used to request that the UE be switched to the target SN;

11. An apparatus for processing an SCG Failure, comprising:

at least one processor, and

a memory coupled to the at least one processor;

wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method of any one of claims 1-5 by executing the instructions stored by the memory.

12. A readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the SCG Failure processing method according to any of claims 1-5.