WO2019137161A1

WO2019137161A1 - Method and device for processing scg failure

Info

Publication number: WO2019137161A1
Application number: PCT/CN2018/121589
Authority: WO
Inventors: 刘爱娟; 陈瑞卡; 张大钧; 梁靖
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-01-09
Filing date: 2018-12-17
Publication date: 2019-07-18
Also published as: CN110022588B; CN110022588A

Abstract

Disclosed are a method and device for processing an SCG Failure. The method comprises a secondary NodeB (SN) receiving a first message for indicating that a secondary cell group failure (SCG Failure) has occurred to a user equipment (UE), wherein the first message is information generated by a main NodeB (MN) after receiving 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 serving cell of the UE in the SN determining to perform PSCELL switching of the main and secondary cell according to the measurement result, so that the UE accesses the switched target PSCELL, or the SN determining to perform SN switching according to the measurement result so that the UE accesses the switched target SN.

Description

Method and device for processing SCG Failure

The present application claims priority to Chinese Patent Application No. 201810018086.9, entitled "Scheme Processing Method and Apparatus for SCG Failure", filed on January 9, 2018, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and a device for processing an SCG Failure.

Background technique

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 eNodeB is connected to the EPC (Evolved Packet Core) through the S1 interface, and the eNodeBs are connected through the X2 interface. To support higher data throughput, the UE user equipment can implement dual connectivity through two eNodeBs. .

Similar to the dual connectivity of the LTE system, in the 5G system, the Tight Interworking of the eNodeB and the 5G base station gNB is also supported. In the LTE and 5G tightly coupled scenarios, the UE (User Equipment) and the gNB are When the network is disconnected, the UE will have a secondary cell group (SCG) failure. At present, when the SCG failure occurs in the UE, how to deal with the SCG Failure scenario has not been completely solved. Program.

Summary of the invention

The embodiment of the present application provides a method and a device for processing an SCG Failure, which are used to solve the problem of how to deal with a scenario of an SCG failure when a SCG failure occurs in a UE, and there is no complete solution.

To this end, in the first aspect, the embodiment of the present application provides a processing method for the SCG Failure, which is applicable to the SN side of the secondary base station, and the method includes:

The second base station (SN) receives a first message indicating that the user equipment UE has a secondary cell group failure SCG Failure, where the first message is received by the primary base station (MN). After the SCG Failure, the first message carries the measurement result obtained by the UE when the SCG Failure occurs.

The serving cell of the UE in the SN determines to perform a primary secondary cell (PSCELL) handover according to the measurement result, so that the UE accesses the target PSCELL after the handover, or

The SN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after the handover.

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

The SN sends a second message to the MN, where the second message carries the target PSCELL configuration information allocated by the SN for the UE, and the second message is used to instruct the MN to configure the target PSCELL configuration information. Sending to the UE, the target PSCELL configuration information is used by the UE to perform configuration update to access the target PSCELL.

Optionally, when the SN determines, according to the measurement result, that the SN is performed, the method further includes:

Determining, by the SN, an identifier ID of the target SN;

Transmitting, by the SN, a third message that carries the ID to the MN, where the third message is used to indicate that the MN acquires, according to the ID, the target SN that the target SN is a target SN allocated to the UE. Configuration information, where the target SN configuration information is used by the UE to perform configuration update to access the target SN.

Optionally, after the SN determines, according to the measurement result, that the PSCELL handover is performed on the primary and secondary cells, the method includes:

Receiving, by the SN, a fourth message sent by the MN, where the fourth message is used to indicate data forwarding (Date Forwarding) between the SN and the MN; or

After the SN determines, according to the measurement result, that the SN is performed, the method includes:

The SN receives a fifth message sent by the MN, where the fifth message is used to indicate that the SN performs Date Forwarding with the target SN.

Optionally, before the receiving, by the secondary base station SN, the first message that is used to indicate that the user equipment UE has a secondary cell group failure SCG Failure, the method further includes:

Receiving, by the SN, a release message sent by the MN to release the SN;

The SN sends a message to the MN indicating that the MN is denied to release the SN.

In a second aspect, the embodiment of the present application provides a method for processing a SCG Failure, which is applicable to a primary base station MN side, and the method includes:

The primary eNB receives the indication message that is sent by the user equipment to indicate that the UE is SCG Failure, and the indication message carries the measurement result obtained by the UE when the SCG Failure occurs.

The MN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after handover.

Optionally, before the determining, by the MN, that the SN is performed according to the measurement result, the MN includes:

Sending, by the MN, a request message to the target SN, where the request message is used to request to switch the UE to the target SN;

The MN receives the configuration information that is sent 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 for configuration update of the UE to access the target SN. .

The MN sends a release message for releasing the source SN to the source SN, where the source SN is an SN that is accessed before the UE generates an SCG Failure.

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

a receiving unit, configured to receive a first message that is used by the user equipment UE to generate a secondary cell group failure SCG Failure, where the first message is generated after the first base station MN receives the SCG Failure reported by the UE, The first message carries the measurement result obtained by the UE when the SCG Failure occurs in the UE;

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

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

Optionally, the first determining unit is further configured to:

Sending a second message to the MN, where the second message carries the target PSCELL configuration information allocated by the SN for the UE, and the second message is used to instruct the MN to send the target PSCELL configuration information to the UE And the target PSCELL configuration information is used by the UE to perform a configuration update to access the target PSCELL.

Optionally, the second determining unit is further configured to:

Determining an identification ID of the target SN;

And sending, by the MN, a third message that carries the ID, where the third message is used to indicate that the MN acquires target SN configuration information that is allocated by the target SN to the UE according to the ID, The target SN configuration information is used by the UE to perform a configuration update to access the target SN.

Optionally, the receiving unit is further configured to:

Receiving a fourth message sent by the MN, where the fourth message is used to indicate data forwarding (Date Forwarding) between the SN and the MN; or

Receiving a fifth message sent by the MN, where the fifth message is used to indicate that the SN performs Date Forwarding with the target SN.

Optionally, the receiving unit is further configured to:

Receiving a request sent by the MN to release a release message of the SN;

Sending a message to the MN indicating that the MN is denied to release the SN.

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

a receiving unit, configured to receive an indication message that is sent by the user equipment, to indicate that the UE generates an SCG Failure, where the indication message carries a measurement result obtained by the UE when the SCG Failure occurs;

And a determining unit, configured to determine, according to the measurement result, that the SN is performed, so that the UE accesses the target SN after the handover.

Optionally, it also includes:

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

The receiving unit is further configured to receive configuration information that is sent by the target SN based on the request message, where the configuration information is used by the target SN to allocate configuration updates to the UE for accessing the UE. The information of the target SN.

Optionally, the sending unit is further configured to:

And sending, to the source SN, a release message that releases the source SN, where the source SN is an SN that is accessed before the UE generates an SCG Failure.

In a fifth aspect, the embodiment of the present application provides a device for processing an SCG Failure, which is applicable to a secondary base station SN, where the device includes:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Receiving, by the transceiver, a first message, instructing the user equipment UE to generate a secondary cell group failure SCG Failure, where the first message is generated after the first base station MN receives the SCG Failure reported by the UE, the first The message carries the measurement result obtained by the UE when the SCG Failure occurs in the UE;

Determining, according to the measurement result, performing a PSCELL handover of the primary and secondary cells, so that the UE accesses the target PSCELL after the handover, or

According to the measurement result, it is determined that the SN handover is performed, so that the UE accesses the target SN after the handover.

In a sixth aspect, the embodiment of the present application provides a device for processing an SCG Failure, which is applicable to a primary base station MN, and the device includes:

a memory for storing program instructions;

Receiving, by the transceiver, an indication message, which is sent by the user equipment, to indicate that the UE generates an SCG Failure, where the indication message carries a measurement result obtained by the UE when the SCG Failure occurs;

In a seventh aspect, the embodiment of the present application provides a readable storage medium, where a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the SCG Failure processing method according to the first aspect or the second aspect are implemented. .

The above one or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

For the technical solution in the embodiment of the present application, the first message that is used to indicate that the user equipment UE fails to generate the secondary cell group SCG Failure is received by the secondary base station SN, where the first message is received by the primary base station MN. The information generated after the reported SCG Failure, the first message carries the measurement result obtained by the UE when the SCG Failure occurs; the SN determines to perform the PSCELL handover of the primary and secondary cells according to the measurement result, so that the UE accesses The target PSCELL is switched, or the SN determines to perform the SN handover according to the measurement result, so that the UE accesses the target SN after the handover, so that the current solution to the SCG failure occurs in the UE. There is no complete solution to the SCG Failure scenario.

In addition, in the method in the embodiment of the present application, the primary base station MN receives an indication message that is sent by the user equipment UE to indicate that the UE is SCG Failure, and the indication message carries the measurement result obtained by the UE when the SCG Failure occurs; The MN determines to perform the SN handover according to the measurement result, so that the UE accesses the target SN after the handover. Therefore, another SCG Failure processing method is provided, which not only solves the current SCG Failure in the UE. How to deal with the SCG Failure scenario, there is no complete solution problem, and it has the effective effect of the diversity of SCG Failure processing methods.

DRAWINGS

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

FIG. 1 is a schematic diagram of two architectures of an LTE and a 5G core network in a tightly coupled interoperability scenario according to an embodiment of the present disclosure;

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

FIG. 3 is a flowchart of interaction between a secondary base station, a primary base station, and a user equipment according to an embodiment of the present disclosure;

4 is a flowchart of some steps that can be performed in the embodiment of the present application;

FIG. 5 is a flowchart of interaction between a secondary base station, a primary base station, and a user equipment according to an embodiment of the present application;

FIG. 6 is a flowchart of still further steps that can be performed in the embodiment of the present application;

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

FIG. 8 is a flowchart of still other steps that can be performed in the embodiment of the present application;

FIG. 9 is a flowchart of interaction between another secondary base station, a primary base station, and a user equipment provided in the embodiment of the present application.

Detailed ways

The technical solutions of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is obvious that the described embodiments are the present application. Some embodiments of the technical solution, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments described in the present application without the inventive work are all within the scope of the technical solutions of the present application.

Referring to FIG. 1 , FIG. 1 is a schematic diagram of two architectures of a LTE and a 5G core network in a tightly coupled interworking scenario. In the two architecture diagrams, a base station eNB in a 4G network functions as a primary base station MN, that is, an MeNB. The base station NR gNB in the 5G core network serves as the secondary base station SN, and the secondary base station SN can be connected to the 4G core network through the LTE base station, that is, the primary base station MN (shown as a in FIG. 1), and the secondary base station SN and the primary base station can also be both Connect to the 5G core network (shown as b in Figure 1).

Referring to FIG. 2, a method for processing an SCG Failure in a tightly coupled interworking Tight Interworking scenario, where the LTE and 5G core networks shown in FIG. 1 are provided in the embodiment of the present disclosure, includes:

Step S101: The secondary base station SN receives a first message that is used to indicate that the user equipment UE fails to generate a secondary cell group SCG Failure, where the first message is generated after the primary base station MN receives the SCG Failure reported by the UE. The first message carries the measurement result obtained by the UE when the SCG Failure occurs in the UE;

Step S102: The serving cell of the UE in the SN determines to perform PSCELL handover of the primary and secondary cells according to the measurement result, so that the UE accesses the target PSCELL after the handover, or

Step S103: The SN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after the handover.

The method in the embodiment of the present application performs step S101, that is, the secondary base station SN receives a first message indicating that the user equipment UE has a secondary cell group failure SCG Failure, where the first message is received by the primary base station MN. The information generated after the SCG Failure reported by the UE, where the first message carries the measurement result obtained by the UE when the SCG Failure occurs.

Referring to FIG. 3, in actual application, when the network between the UE and the secondary base station SN is disconnected, the UE may cause SCG Failure, and the UE may stop the SCG failure and the UE in the event of a SCG Failure. The obtained measurement result is reported to the primary base station MN. When the MN receives the SCG Failure reported by the UE, the MN can send a message that the UE has an SCG Failure to the SN. In a specific practice, the MN can pass the RRC (Radio Resource Control, The RRC (Transport) message informs the SN of the SCG Failure. At the same time, the MN carries the measurement result obtained by the UE when the SCG Failure occurs in the RRC Transfer message, and then forwards the measurement result to the SN through the RRC Transfer message.

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

Specifically, when the SN selects to perform the PSCELL handover of the SN according to the measurement result obtained by the UE in the RRC Transfer message when the SCG Failure occurs, the method in this embodiment may perform step S102: the SN according to the As a result of the measurement, it is determined that the PSCELL handover of the primary and secondary cells of the SN is performed, so that the UE accesses the target PSCELL after the handover.

Please refer to FIG. 3 for reference. In a specific implementation process, when the SN determines to perform the PSCELL handover of the SN according to the measurement result, the SN may also notify the MN by sending a SgNB Change Required message to the MN: The SN performs the PSCELL handover, and after receiving the SgNB Change Required message sent by the SN, the MN may also feedback to the SN to determine the message that the SN performs the PSCELL handover. In a specific implementation process, the MN may pass the SgNB Change Confirm. The message feeds back to the SN to determine the message that the SN is receiving a PSCELL handover.

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

Step A: The SN sends a second message to the MN, where the second message carries target PSCELL configuration information allocated by the SN for the UE, and the second message is used to indicate that the MN is to target the MN. The PSCELL configuration information is sent to the UE, and the target PSCELL configuration information is used by the UE to perform configuration update to access the target PSCELL.

In an actual application, when the SN determines to perform the PSCELL handover of the primary and secondary cells according to the measurement result, the SN may also allocate configuration information corresponding to the target PSCELL to be switched to the UE. The configuration information may be referred to as the target PSCELL allocated to the UE. Resources), for convenience of description, the above configuration information is referred to as target PSCELL configuration information, and the SN may send the target PSCELL configuration information to the MN with the encoded NR RRC corresponding message, and the MN receives the encoded NR sent by the SN. After the RRC corresponding message, the MN may forward the RRC corresponding message of the encoded NR to the UE by using an RRC Connection Reconfiguration message.

After receiving the RRC Connection Reconfiguration message sent by the MN, the UE may obtain the RRC corresponding message of the encoded NR from the RRC Connection Reconfiguration message, and obtain the target PSCELL configuration allocated by the SN for the UE from the RRC corresponding message of the encoded NR. The UE applies the target PSCELL configuration information for configuration update. After the configuration update is completed, the UE can access the target PSCELL.

In an actual application, after receiving the RRC Connection Reconfiguration message sent by the MN, the UE may further feed back to the MN to confirm that the RRC Connection Reconfiguration message has been received, and the RRC corresponding message of the encoded NR carried by using the RRC Connection Reconfiguration message. The target PSCELL configuration information completes the configuration update determination message. For example, the UE may send an RRC Connection Reconfiguration Complete message to the MN, and then notify the MN that the UE confirms that the RRC Connection Reconfiguration message has been received. And complete the update of the target PSCELL configuration information.

The method in the embodiment of the present application may further perform the following steps:

Step B: The SN receives a fourth message sent by the MN, where the fourth message is used to indicate that the SN and the MN perform Data Forwarding.

The MN may also send a message to the SN to assist the SN in performing data pre-transmission of the target PSCELL in the process of performing the PSCELL handover of the primary and secondary cells in the SN. In a specific practice, the MN may pass the MN. Sending a SN Status Transfer message to the SN to assist the data transmission between the MN and the SN. Of course, the SN Status Transfer message may also carry the indication release source PSCELL (the PSCELL accessed by the UE before the handover). information. In practical applications, the SN determines to perform PSCELL switching according to the measurement result, and if the target PSCELL is also required to perform a path switch (Path Switch) process, the Path Switch may also be executed, and no discussion is made here. .

Specifically, when the SN selects to perform SN handover according to the measurement result obtained by the UE in the RRC Transfer message when the SCG Failure occurs, the method in the embodiment of the present application may perform step S103: the SN according to the measurement result, It is determined that the SN handover is performed such that the UE accesses the target SN after the handover.

Referring to FIG. 4, when the SN determines that the SN is performed according to the measurement result, the method in the embodiment of the present application may further perform the following steps:

Step 201: The SN determines an identifier ID of the target SN.

Step 202: The SN sends a third message carrying the ID to the MN, where the third message is used to indicate that the MN acquires the target SN from the target SN according to the ID, and allocates the target SN to the UE. Target SN configuration information, the target SN configuration information is used by the UE to perform configuration update to access the target SN.

Please continue to refer to FIG. 5, in a specific practice, when the SN (source S-SgNB shown in FIG. 5) determines that the SN is performed according to the measurement result, the SN also determines the target SN to be switched. ID, the T-SgNB in FIG. 5 represents the target SN. After the SN acquires the ID of the target SN to be handed over, the SN may also notify the MN by sending an SgNB Change Required message to the MN: the SN performs SN handover, and simultaneously in the above SgNB The Change Required message carries the ID of the target SN, so that the ID of the target SN is obtained from the SgNB Change Required message after the SgNB Change Required message received by the MN.

After the MN obtains the ID of the target SN from the SgNB Change Required message, the MN may send the request target SN to the target SN according to the ID to allocate configuration information corresponding to the target SN to the UE. The configuration information may be referred to as the target SN allocated to the UE. Resources), for the convenience of description, the configuration information corresponding to the target SN to which the target SN is allocated to the UE is referred to as target SN configuration information.

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

After receiving the RRC Connection Reconfiguration message sent by the MN, the UE may obtain the RRC corresponding message of the encoded NR from the RRC Connection Reconfiguration message, and obtain the target SN that the target SN allocates for the UE from the RRC corresponding message of the encoded NR. The configuration information is that the UE applies the target SN configuration information to perform configuration update. After the configuration update is completed, the UE can access the target SN.

Similarly, after receiving the RRC Connection Reconfiguration message sent by the MN, the UE may further feed back to the MN to confirm that the RRC Connection Reconfiguration message has been received and the RRC Connection Reconfiguration Complete message that the configuration update is completed by using the target SN configuration information.

Step C: The SN receives a fifth message sent by the MN, where the fifth message is used to indicate that the SN performs Date Forwarding with the target SN.

In the process of the SN performing the SN handover, if the data forwarding between the SN and the target SN is required, the MN may also send information for assisting the SN and the target SN to perform data pre-transmission to the SN. In a specific practice, the MN may The data forwarding is performed between the target SN and the SN by sending a SN Status Transfer message to the SN. Of course, the SN Status Transfer message may also carry information indicating that the SN is released, that is, the source SN (the SN accessed by the UE before the handover). . In an actual application, the SN determines to perform the SN handover according to the measurement result. If the Path Switch process needs to be performed with the target SN, the Path Switch may also be executed, and no discussion is made here.

Referring to FIG. 6, in the actual application, the processing method of the foregoing SCG Failure in the embodiment of the present application may further perform the following steps before performing the foregoing step S101:

Step S301: The SN receives a request sent by the MN to release a release message of the SN.

Step S302: The SN sends a message to the MN to indicate that the MN is denied to release the SN.

In an actual application, after the SCG Failure occurs in the UE, the MN receives the SCG Failure reported by the UE, except that the MN can directly perform the SCG Failure on the UE and the SCG Failure occurs in the UE. The measurement result is sent to the SN, and the SN determines to perform PSCELL handover of the primary and secondary cells based on the received measurement result, so that the UE accesses the target PSCELL after the handover, or the SN determines to perform according to the measurement result. The SN is switched so that the UE accesses the target SN after the handover, and can also be performed as follows:

That is, after the MN receives the SCG Failure reported by the UE and obtains the measurement result when the UE generates the SCG Failure, the MN may also release the release SN at its own discretion. At this time, the MN may release the release message of the SN to the request sent by the SN, and the SN receives the measurement message. After the release message, the MN's request to release the SN may be rejected, at which time the SN may send a message to the MN indicating that the MN is denied to release the SN.

After the SN sends a message to the MN indicating that the MN is released to release the SN, the MN may send the measurement result obtained by the UE to the SN and the UE to generate the SCG Failure, and then send the measurement result to the SN, and then the SN is based on the received measurement. As a result, it is determined that the PSCELL handover of the primary and secondary cells is performed, so that the UE accesses the target PSCELL after the handover, or the SN determines to perform the SN handover according to the measurement result, so that the UE accesses the target after the handover. SN, the description will not be repeated here.

Please refer to FIG. 7 , which is another processing method of the SCG Failure provided by the embodiment of the present application, including:

Step S401: The primary base station MN receives an indication message that is sent by the user equipment to indicate that the UE is SCG Failure, and the indication message carries the measurement result obtained by the UE when the SCG Failure occurs.

Step S402: The MN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after handover.

In the foregoing method in the embodiment of the present application, step S101 is performed: the primary base station MN receives an indication message that is sent by the user equipment UE to indicate that the UE generates an SCG Failure, and the indication message carries the measurement obtained by the UE when the SCG Failure occurs. result.

In an actual application, when the network between the UE and the source SN is disconnected, the UE may cause an SCG Failure. In this case, the UE may report the generated SCG Failure and the measurement result obtained by the UE when the SCG Failure occurs. After the MN receives the SCG Failure reported by the UE and the SCG Failure of the UE, the MN may also release the Release Source SN, that is, perform SN handover (SN Change), and the source SN is the SCG of the UE. The SN where the failure occurred.

Please refer to FIG. 8. In an actual application, the method in the embodiment of the present application may further perform the following steps before performing step S402:

Step S403: The MN sends a request message to the target SN, where the request message is used to request to switch the UE to the target SN.

Step S404: The MN receives the configuration information that is sent by the target SN based on the request message, where the configuration information is configured by the target SN for the UE to perform configuration update to access the target. SN information.

Referring to FIG. 9 for reference, when the MN decides the Release source SN, that is, performs SN handover, the MN (such as the MeNB in FIG. 9) may send a request message to the target SN, where the request message is used to request to switch the UE. Going to the target SN, in a specific practice, the MN may send a request message for requesting handover of the UE to the target SN to the target SN through a SgNB Addition Request message, and at the same time, The SgNB Addition Request message carries the measurement result obtained by the UE when the SCG Failure occurs.

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

After receiving the RRC Connection Reconfiguration message sent by the MN, the UE may obtain the RRC corresponding message of the encoded NR from the RRC Connection Reconfiguration message, and obtain the resource allocated by the target SN for the UE from the RRC corresponding message of the encoded NR. The UE applies the resources allocated by the target SN to perform configuration update. After the configuration update is completed, the UE can access the target SN.

In a practical application, the method in the embodiment of the present application may further perform the following steps before performing step S402:

Step D: The MN sends a release message for releasing the source SN to the source SN, where the source SN is an SN that is accessed before the UE generates an SCG Failure.

In the embodiment of the present application, the order of the above step D and the above steps S403 and S404 are not limited.

The MN may also send a release message requesting release of the source SN to the source SN when the MN decides to release the source SN, that is, the release message may also carry the indication of the SCG Failure of the UE and the UE obtains the SCG Failure. As a result of the measurement, after receiving the release message sent by the MN, the source SN may also feed back to the MN a message indicating that the MN allows the MN to release the source SN.

After the step S401 is performed, the MN may perform the SN handover according to the measurement result, so that the UE accesses the target SN after the handover.

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 handover. After the UE applies the resource allocated by the target SN to perform configuration update, the UE may access the SN after the handover. The target is in the SN.

Similarly, in the process of SN handover, if data pre-transmission is required between the SN and the target SN, the MN may also send information to the source SN for assisting the source SN and the target SN to perform data pre-transmission. In a specific practice, the MN The data forwarding may be performed between the target SN and the source SN by sending a SN Status Transfer message to the SN. Of course, the information indicating the release source SN may also be carried in the SN Status Transfer message. Similarly, in practical applications, the MN determines to perform SN handover according to the measurement result. If the Path Switch process needs to be performed with the target SN, the Path Switch can also be executed, and no discussion is made here.

Therefore, the first message is received by the secondary base station SN to indicate that the user equipment UE generates a secondary cell group failure SCG Failure, where the first message is received by the primary base station MN after receiving the SCG Failure reported by the UE. The generated information, the first message carries a measurement result obtained by the UE when the SCG Failure occurs; and the SN determines, according to the measurement result, that the primary and secondary cell PSCELL is switched, so that the UE accesses the target PSCELL after the handover. Or, the SN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after the handover, so that the scenario of how to stop the SCG when the SCG Failure occurs in the UE is effectively solved. For processing, there is still no problem with a complete solution.

Based on the same inventive concept, a secondary base station SN device is provided in the embodiment of the present application. For the specific implementation of the SCG Failure processing method of the device, refer to the description of the method embodiment in the foregoing method.

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

Optionally, the first determining unit is further configured to:

Optionally, the second determining unit is further configured to:

Determining an identification ID of the target SN;

Optionally, the receiving unit is further configured to:

Receiving a fourth message sent by the MN, where the fourth message is used to indicate that data forwarding is performed between the SN and the MN; or

Optionally, the receiving unit is further configured to:

Receiving a request sent by the MN to release a release message of the SN;

Sending a message to the MN indicating that the MN is denied to release the SN.

Based on the same inventive concept, a primary base station MN device is provided in the embodiment of the present application. For a specific implementation of the SCG Failure processing method of the device, refer to the description of the method part in the foregoing method.

a receiving unit, configured to receive an indication message that is sent by the user equipment, and is used by the UE to indicate that the UE is in the SCG Failure, where the indication message carries the measurement result obtained by the UE when the SCG Failure occurs.

Optional, including:

Optionally, the sending unit is further configured to:

Based on the same inventive concept, an apparatus for processing SCG Failure is provided in the embodiment of the present application, 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, the at least one processor performing a processing method of SCG Failure as described above by executing the instructions stored by the memory.

Specifically, the device for processing the SCG Failure provided in the embodiment of the present application is applicable to the secondary base station SN, and the device includes:

a memory for storing program instructions;

A transceiver for receiving and transmitting data under the control of a processor.

Specifically, the device for processing the SCG Failure provided in the embodiment of the present application is applicable to the primary base station MN, and the device includes:

a memory for storing program instructions;

Wherein, whether it is the primary base station MN or the secondary base station SN, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by the processor and various circuits of the memory represented by the memory. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.

The processor is responsible for managing the bus and normal processing, as well as providing various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory can be used to store data used by the processor when performing operations.

Optionally, the processor may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). Complex programmable logic devices).

A base station can be a network device (e.g., an access point) that refers to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B) is not limited in the embodiment of the present invention.

Based on the same inventive concept, embodiments of the present application provide a readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of performing a SCG Failure processing method as described above.

The readable storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD) , BD, HVD, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)).

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for processing SCG Failure, characterized in that it comprises:

The first base station SN receives a first message for indicating that the user equipment UE has a secondary cell group failure SCG Failure, where the first message is generated after the first base station MN receives the SCG Failure reported by the UE, the first The message carries the measurement result obtained by the UE when the SCG Failure occurs in the UE;

The serving cell of the UE in the SN determines to perform PSCELL handover of the primary and secondary cells according to the measurement result, so that the UE accesses the target PSCELL after the handover, or

The SN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after the handover.
The method according to claim 1, wherein when the serving cell of the UE in the SN determines to perform PSCELL handover of the primary and secondary cells according to the measurement result, the method further includes:

The SN sends a second message to the MN, where the second message carries the target PSCELL configuration information allocated by the SN for the UE, and the second message is used to instruct the MN to configure the target PSCELL configuration information. Sending to the UE, the target PSCELL configuration information is used by the UE to perform configuration update to access the target PSCELL.
The method according to claim 1, wherein when the SN determines to perform SN switching according to the measurement result, the method further includes:

Determining, by the SN, an identifier ID of the target SN;

Transmitting, by the SN, a third message that carries the ID to the MN, where the third message is used to indicate that the MN acquires, according to the ID, the target SN that the target SN is a target SN allocated to the UE. Configuration information, where the target SN configuration information is used by the UE to perform configuration update to access the target SN.
The method according to any one of claims 1-3, wherein before the receiving, by the secondary base station SN, the first message indicating that the user equipment UE has a secondary cell group failure SCG Failure, the method further includes:

Receiving, by the SN, a release message sent by the MN to release the SN;

The SN sends a message to the MN indicating that the MN is denied to release the SN.
A method for processing SCG Failure, characterized in that it comprises:

The primary eNB receives the indication message that is sent by the user equipment to indicate that the UE is SCG Failure, and the indication message carries the measurement result obtained by the UE when the SCG Failure occurs.

The MN determines to perform SN handover according to the measurement result, so that the UE accesses the target SN after handover.
The method according to claim 5, wherein before the MN determines to perform the SN handover according to the measurement result, the method includes:

Sending, by the MN, a request message to the target SN, where the request message is used to request to switch the UE to the target SN;

The MN receives the configuration information that is sent 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 for configuration update of the UE to access the target SN. .
The method according to claim 5 or 6, wherein before the MN determines to perform the SN handover according to the measurement result, the method includes:

The MN sends a release message for releasing the source SN to the source SN, where the source SN is an SN that is accessed before the UE generates an SCG Failure.
A secondary base station SN device, comprising:

a receiving unit, configured to receive a first message that is used by the user equipment UE to generate a secondary cell group failure SCG Failure, where the first message is generated after the first base station MN receives the SCG Failure reported by the UE, The first message carries the measurement result obtained by the UE when the SCG Failure occurs in the UE;

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

And a second determining unit, configured to determine, according to the measurement result, that the SN is performed, so that the UE accesses the target SN after the handover.
The device according to claim 8, wherein the first determining unit is further configured to:

Sending a second message to the MN, where the second message carries the target PSCELL configuration information allocated by the SN for the UE, and the second message is used to instruct the MN to send the target PSCELL configuration information to the UE And the target PSCELL configuration information is used by the UE to perform a configuration update to access the target PSCELL.
The device according to claim 8, wherein the second determining unit is further configured to:

Determining an identification ID of the target SN;

And sending, by the MN, a third message that carries the ID, where the third message is used to indicate that the MN acquires target SN configuration information that is allocated by the target SN to the UE according to the ID, The target SN configuration information is used by the UE to perform a configuration update to access the target SN.
The device according to any one of claims 8 to 10, wherein the receiving unit is further configured to:

Receiving a request sent by the MN to release a release message of the SN;

Sending a message to the MN indicating that the MN is denied to release the SN.
A primary base station MN device, comprising:

a receiving unit, configured to receive an indication message that is sent by the user equipment, to indicate that the UE generates an SCG Failure, where the indication message carries a measurement result obtained by the UE when the SCG Failure occurs;

And a determining unit, configured to determine, according to the measurement result, that the SN is performed, so that the UE accesses the target SN after the handover.
The device of claim 12, further comprising:

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

The receiving unit is further configured to receive configuration information that is sent by the target SN based on the request message, where the configuration information is used by the target SN to allocate configuration updates to the UE for accessing the UE. The information of the target SN.
The device according to claim 13, wherein the sending unit is further configured to:

And sending, to the source SN, a release message that releases the source SN, where the source SN is an SN that is accessed before the UE generates an SCG Failure.
A device for processing SCG Failure, comprising:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Receiving a first message that is used to indicate that the user equipment UE has a secondary cell group failure SCG Failure, where the first message is generated after the first base station MN receives the SCG Failure reported by the UE, and the first message carries the UE. The measurement result obtained by the UE when SCG Failure occurs;

Determining, according to the measurement result, performing a PSCELL handover of the primary and secondary cells, so that the UE accesses the target PSCELL after the handover, or

According to the measurement result, it is determined that the SN handover is performed, so that the UE accesses the target SN after the handover.
A device for processing SCG Failure, comprising:

a memory for storing program instructions;

a processor, configured to invoke a program instruction stored in the memory, and execute according to the obtained program:

Receiving, by the user equipment, the UE, an indication message for instructing the UE to generate an SCG Failure, where the indication message carries a measurement result obtained by the UE when the SCG Failure occurs;

According to the measurement result, it is determined that the SN handover is performed, so that the UE accesses the target SN after the handover.
A readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the SCG Failure processing method according to any one of claims 1-7.