CN114390640A

CN114390640A - Method and device for judging error type of secondary cell change

Info

Publication number: CN114390640A
Application number: CN202110397114.4A
Authority: CN
Inventors: 王睿炜; 刘爱娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-10-19
Filing date: 2021-04-13
Publication date: 2022-04-22
Anticipated expiration: 2041-04-13
Also published as: CN114390640B; WO2022083411A1

Abstract

The embodiment of the invention provides a method and equipment for judging the error type of secondary cell change. The method applied to the first auxiliary node comprises the following steps: receiving reference information sent by a main node, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is information of an auxiliary cell group which is obtained by the main node and used for reestablishing multiple wireless access technologies to connect the MR-DC after the auxiliary cell group fails, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in the MR-DC scene; judging the error type of the auxiliary cell transformation in the MR-DC scene according to the reference information; the first auxiliary node is one of the auxiliary nodes involved in the auxiliary cell transformation process, and the auxiliary cell transformation comprises auxiliary cell transformation in the auxiliary node and auxiliary cell transformation between the auxiliary nodes. Therefore, in the embodiment of the present invention, after the SCG failure occurs, the error type of the secondary cell change may be determined.

Description

Method and device for judging error type of secondary cell change

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for determining an error type of secondary cell change.

Background

Under a Multi-RAT Dual Connectivity (MR-DC) scenario, relevant parameters of a Secondary Cell Group (SCG) may cause SCG failure if the configuration is not reasonable. When SCG failure occurs, UE sends SCG failure message to network under Master Node (MN), MN forwards SCG failure message to failed auxiliary Node (SN), and failed SN analyzes SN transformation error type generated by SCG failure, thereby optimizing parameter configuration.

There are, among others, premature, late and wrong cells in MR-DC scenarios. However, in some SCG failure scenarios, the SN cannot trigger the subsequent establishment of MR-DC, and can only be triggered by the MN. Therefore, when the SN receives the SCG failure indication message, it is not possible to determine the type of secondary cell change error, that is, to determine whether to change to the wrong cell, or to change to a too early cell, or to change to a too late cell.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for judging the error type of secondary cell transformation, which can judge the error type of secondary cell transformation after SCG failure occurs.

In a first aspect, an embodiment of the present invention provides a method for determining an error type of secondary cell change, where the method is applied to a first secondary node, where the first secondary node is one of secondary nodes involved in a secondary cell change process, and the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes; the method comprises the following steps:

receiving reference information sent by a main node, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is information for reestablishing a plurality of wireless access technologies to connect an MR-DC auxiliary cell group after the auxiliary cell group fails, and the auxiliary judgment information is used for judging the error type of the auxiliary cell change in an MR-DC scene;

and judging the error type of the secondary cell transformation under the MR-DC scene according to the reference information.

Optionally, the target information includes at least one of the following;

reestablishing identification information of auxiliary nodes to which the auxiliary cell group of the MR-DC belongs;

reestablishing identification information of the primary and secondary cells in the secondary cell group of the MR-DC.

Optionally, the auxiliary decision information includes at least one of the following:

context information of the user equipment in which the secondary cell group fails;

historical information of the user equipment in which the secondary cell group fails.

Optionally, when the reference information includes the auxiliary decision information, the determining, according to the reference information, the error type of the secondary cell change in the MR-DC scenario includes:

determining information for reestablishing an MR-DC auxiliary cell group according to the auxiliary judgment information;

and judging the error type of the secondary cell transformation under the MR-DC scene according to the information of the reestablished MR-DC secondary cell group.

Optionally, the receiving the reference information sent by the master node includes:

receiving a secondary cell group failure indication message sent by the master node, wherein the reference information is carried in the secondary cell group failure indication message;

or

Receiving a first message sent by the master node, wherein the first message carries the reference information, and the first message is sent by the master node to the first slave node in the process of reestablishing the MR-DC by the user equipment with the failure of the slave cell group;

or

Receiving a second message sent by the master node, wherein the second message carries the reference information, and the second message is a message added in the process of reestablishing the MR-DC by the user equipment with the failure of the secondary cell group;

or

Receiving a third message sent by the master node, wherein the third message carries the reference information, and the third message is added after the user equipment with the failure of the secondary cell group completes MR-DC establishment;

or

And receiving a fourth message sent by the master node, wherein the fourth message carries the reference information, and the fourth message is an increased message before the user equipment which fails to establish the MR-DC again.

Optionally, before determining the error type of the secondary cell change in the MR-DC scenario according to the reference information, the method further includes:

receiving a first time when a secondary cell group failure occurs, which is sent by the main node;

the determining the error type of the secondary cell change in the MR-DC scenario according to the reference information includes:

under the condition that the time interval from the first moment to the second moment is less than or equal to a time threshold value acquired in advance, judging the error type of the secondary cell transformation under the MR-DC scene according to the reference information;

and the second time is the time when the first auxiliary node receives the reference information.

receiving a secondary cell group failure indication message sent by the main node, and determining the time of receiving the secondary cell group failure indication message as a third time;

under the condition that the time interval from the third moment to the second moment is less than or equal to a time threshold value acquired in advance, judging the error type of the secondary cell transformation under the MR-DC scene according to the reference information;

Optionally, the error type of the secondary cell change includes at least one of the following:

transformation of early auxiliary nodes, transformation of late auxiliary nodes, transformation of auxiliary nodes to wrong cells, transformation of early main and auxiliary cells, transformation of late main and auxiliary cells and transformation of main and auxiliary cells to wrong cells.

Optionally, the first auxiliary node is a source auxiliary node or a target auxiliary node.

In a second aspect, an embodiment of the present invention further provides a method for determining an error type of secondary cell change, where the method is applied to a master node, and the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes; the method comprises the following steps:

after an auxiliary cell group failure occurs in an auxiliary node, the main node acquires reference information, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is information acquired by the main node and used for reestablishing a plurality of wireless access technologies to connect the MR-DC auxiliary cell group, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in an MR-DC scene;

and sending the reference information to at least one auxiliary node involved in the auxiliary cell transformation process, so that the at least one auxiliary node involved in the auxiliary cell transformation process judges the error type of the auxiliary cell transformation under the MR-DC scene according to the reference information.

Optionally, the acquiring, by the master node, reference information includes:

and the main node acquires the reference information when receiving the failure information of the auxiliary cell group sent by the user equipment through an air interface.

Optionally, the sending the reference information to at least one secondary node involved in the secondary cell change process includes:

and sending the reference information to at least one auxiliary node involved in the auxiliary cell change process through an XN interface or an X2 interface.

Optionally, the target information includes at least one of the following;

carrying the reference information in an auxiliary cell group failure indication message and sending the reference information to an auxiliary node with an auxiliary cell group failure;

or

The reference information is carried in a first message and sent to at least one auxiliary node involved in the auxiliary cell changing process, wherein the first message sent to a first auxiliary node is a message sent to the first auxiliary node by the main node in the process of reestablishing the MR-DC by the user equipment with failure of the auxiliary cell group, and the first auxiliary node is any one of the at least one auxiliary node;

or

Adding a second message in the process of reestablishing the MR-DC by the user equipment with the failure of the auxiliary cell group, carrying the reference information in the second message, and sending the second message to at least one auxiliary node involved in the auxiliary cell transformation process;

or

After the user equipment with the failure of the auxiliary cell group completes MR-DC reestablishment, adding a third message, carrying the reference information in the third message, and sending the third message to at least one auxiliary node involved in the auxiliary cell transformation process;

or

And before the user equipment with the failure of the auxiliary cell group reestablishes the MR-DC, adding a fourth message, carrying the reference information in the fourth message, and sending the fourth message to at least one auxiliary node involved in the auxiliary cell transformation process.

Optionally, the method further includes:

and sending a first time to at least one auxiliary node involved in the auxiliary cell changing process, wherein the first time is the time when the auxiliary cell group failure occurs.

Optionally, the at least one secondary node involved in the secondary cell change process includes at least one of a source secondary node and a target secondary node.

In a third aspect, an embodiment of the present invention further provides a network device, which is applied to a first secondary node, where the first secondary node is one of secondary nodes involved in a secondary cell change process, and the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes;

the network device includes a memory, a transceiver, a processor:

the memory for storing a computer program; the transceiver is used for transceiving data under the control of the processor; the processor is used for reading the computer program in the memory and executing the following operations:

the method comprises the steps that a transceiver is controlled to receive reference information sent by a main node, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is information for reestablishing a plurality of wireless access technologies to connect an MR-DC auxiliary cell group after the auxiliary cell group fails, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in an MR-DC scene;

Optionally, the target information includes at least one of the following;

or

Optionally, before the processor determines the error type of the secondary cell change in the MR-DC scenario according to the reference information, the transceiver is further configured to:

the processor judges the error type of the secondary cell transformation under the MR-DC scene according to the reference information, and the method comprises the following steps:

Optionally, before the processor determines the error type of the secondary cell change in the MR-DC scenario according to the reference information, the processor is further configured to:

controlling the transceiver to receive a secondary cell group failure indication message sent by the master node, and determining the time of receiving the secondary cell group failure indication message as a third time;

In a fourth aspect, an embodiment of the present invention further provides a network device, where the network device is applied to a master node involved in a secondary cell change process, where the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes;

the network device includes a memory, a transceiver, a processor:

after an auxiliary cell group failure occurs in an auxiliary node, controlling a main node to acquire reference information, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is the information acquired by the main node and used for reestablishing a plurality of wireless access technologies to connect an MR-DC auxiliary cell group, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in an MR-DC scene;

and controlling the transceiver to send the reference information to at least one auxiliary node involved in the auxiliary cell change process, so that the at least one auxiliary node involved in the auxiliary cell change process judges the error type of the auxiliary cell change under the MR-DC scene according to the reference information.

Optionally, the acquiring, by the master node, reference information includes:

Optionally, the target information includes at least one of the following;

or

Optionally, the processor is further configured to:

and controlling the transceiver to send a first time to at least one auxiliary node involved in the auxiliary cell change process, wherein the first time is the time when the auxiliary cell group failure occurs.

In a fifth aspect, an embodiment of the present invention further provides a device for determining an error type of secondary cell change, where the device is applied to a first secondary node, the first secondary node is one of secondary nodes involved in a secondary cell change process, and the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes; the device comprises:

the system comprises a first receiving module and a second receiving module, wherein the first receiving module is used for receiving reference information sent by a main node, the reference information comprises target information and/or auxiliary judgment information, the target information is information for reestablishing a plurality of wireless access technologies to connect an MR-DC (radio frequency-direct current) auxiliary cell group after the failure of the auxiliary cell group occurs, and the auxiliary judgment information is used for judging the error type of the transformation of the auxiliary cell in an MR-DC scene;

and the judging module is used for judging the error type of the secondary cell transformation under the MR-DC scene according to the reference information.

In a sixth aspect, an embodiment of the present invention further provides a device for determining an error type of secondary cell change, where the device is applied to a master node, and the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes; the device comprises:

the information acquisition module is used for controlling the main node to acquire reference information after an auxiliary node fails to generate an auxiliary cell group, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is information acquired by the main node and used for reestablishing a plurality of wireless access technologies to connect the auxiliary cell group of the MR-DC, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in the MR-DC scene;

a first sending module, configured to send the reference information to at least one secondary node involved in the secondary cell change process, so that the at least one secondary node involved in the secondary cell change process determines, according to the reference information, a type of error of the secondary cell change in an MR-DC scenario.

In a seventh aspect, an embodiment of the present invention provides a system for determining an error type of secondary cell change, where the system includes the network device in the third aspect and the network device in the fourth aspect.

In an eighth aspect, the present invention provides a processor-readable storage medium, which stores a computer program for causing a processor to execute any one of the above methods.

In the embodiment of the invention, in the scene of secondary cell transformation in a secondary node or between secondary nodes, after SCG failure occurs, MN can obtain reference information and send the reference information to at least one SN involved in the process of secondary cell transformation, so that the SN can judge the error type of secondary cell transformation in an MR-DC scene according to the reference information, wherein the reference information comprises target information and/or auxiliary judgment information, the target information is the information of reestablishing a plurality of wireless access technologies to connect an MR-DC secondary cell group obtained by a main node after the failure of the secondary cell group occurs, and the auxiliary judgment information is used for judging the error type of secondary cell transformation in the MR-DC scene. Therefore, in the embodiment of the present invention, after SCG failure occurs, the MN transmits the SCG information for reestablishing MR-DC and/or the auxiliary decision information for determining the error type of secondary cell transformation in an MR-DC scene to at least one SN involved in the secondary cell transformation process, so that the SN can determine the error type of secondary cell transformation in the MR-DC scene.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a MR-DC control plane architecture diagram of a UE connected to a 5 GC;

FIG. 2 is a flow chart of SN change;

FIG. 3 is a flow chart of too late SN change;

FIG. 4 is one of the flow charts of premature SN change;

FIG. 5 is a second flowchart of premature SN change;

fig. 6 is a flowchart illustrating steps of a method for determining an error type of secondary cell change applied to a first secondary node according to an embodiment of the present invention;

fig. 7 is a flowchart illustrating a method for determining an error type of a secondary cell change applied to a primary node according to an embodiment of the present invention;

fig. 8 is a block diagram illustrating a structure of an apparatus for determining an error type of secondary cell change applied to a first secondary node according to an embodiment of the present invention;

fig. 9 is a block diagram illustrating a structure of an apparatus for determining an error type of secondary cell change applied to a primary node according to an embodiment of the present invention;

fig. 10 is a block diagram of a network device according to an embodiment of the present invention.

Detailed Description

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

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

The embodiment of the application provides a method and equipment for judging the error type of secondary cell transformation, which are used for judging the error type of secondary cell transformation after SCG failure occurs.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

In addition, the technical scheme provided by the embodiment of the application can be applied to various systems, especially 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

In order to facilitate understanding of the method for determining the error type of the secondary cell change provided in the present application, the following description is first made.

In a first aspect, with respect to Multi-connectivity (MC):

in a multi-connection architecture, a UE may connect to one MN and to one or more SNs and interact with signaling and/or data with these network nodes. Both the MN and the SN node can be Long Term Evolution (LTE) or enhanced Long Term Evolution (e-LTE) or New Radio (NR) nodes. When there is one MN node and one SN node, it may be referred to as Dual Connection (DC). Wherein, the connection schematic diagram of the double connection is shown in fig. 1. In fig. 1, NG-C is an NG interface control plane, Xn-C is an Xn interface control plane, and Uu is an interface between the UE and the 5G access network.

When the UE is in a connected state, it may be connected to one or more network nodes, which may be in one or more multiple Radio Access Technologies (RATs). For example, when the MN is an LTE node and the SN is an NR node, (NG) EN-DC dual connection; when the MN is an NR node and the SN is an LTE node, the MN is an NE-DC double connection; and when both MN and SN are NR nodes, the node is NR-NR-DC.

In a second aspect, regarding an air interface SCG failure information (SCG failure information) message:

radio Link Failure (RLF) is divided into a Master Cell Group (MCG) and an SCG, if the MCG has radio link failure, the UE triggers an RRC connection reestablishment process, and if the SCG has failure, the UE sends an SCG failure information message to an MN node. Wherein SCG is a group of serving cells under the SN node under MR-DC, comprising one primary secondary cell (PSCell) and possibly one or more secondary cells (Scells). And under the condition that the MCG is MR-DC, the service cell group under the MN node.

Wherein, the SCG failure information is used for notifying the MN node of information about radio link failure, synchronization reconfiguration failure, SCG configuration failure on signaling bearer 3(SRB3), and SCG integrity check failure of the UE occurring at the SN node.

In addition, the failureType in the SCG failure information records the failure type of the SCG, and the measResult records the measurement result reported by the UE according to the measurement configuration conditions of the current MN and the SN.

In a third aspect, regarding the flow of SN conversion (SN change):

the SN change procedure may be triggered by the MN or the SN, passing the UE's context from the source SN to the target SN, while at the UE side the SCG configuration is changed from the source SN to the target SN. As shown in fig. 2, the SN change process triggered by the MN is shown in the EN-DC scenario.

As shown in fig. 2, in the process from step 201 to step 202, the MN triggers an SN change flow, and sends an auxiliary node (SgNB) add message to a target SN to request resource allocation; the process of step 203 is that the MN triggers the SgNB to delete the message to the source SN, requesting the source SN to stop sending data to the UE; the process from step 204 to step 205 is that the MN configures the UE to perform new configuration; step 206, the MN informs the target SN that the configuration is completed; the process of step 207 is that the UE performs random access at the target SN; the process of step 208 is for the MN to release the source SN configuration.

Fourth aspect, regarding too late SN change under MR-DC: after a UE accesses a SN cell for a long period of time, SCG failure occurs, and if the MN decides that the UE establishes a radio connection under a different SN, an SN change occurs too late. Specifically, as shown in fig. 3, after a long time after the MR-DC is established, if SCG failure occurs in the source SN (i.e., S-SN), the UE sends an SCG failure information message to the MN (i.e., step 301), and then the MN sends an SCG failure indication message to the S-SN (i.e., step 302), and the MN triggers a subsequent SN change procedure (i.e., steps 303 to 310).

Namely, if the time interval between the starting time of the UE accessing the S-SN and the time of the UE generating the SCG in the S-SN is greater than a first preset time, the UE generates too-late auxiliary node transformation.

Fifth aspect, for premature SN change under MR-DC:

the SCG failure occurs in the process that the UE is changed from the access source SN to the access target SN, or the SCG failure occurs in a short period of time after the UE is accessed to the target SN, and the MN determines that the UE establishes wireless connection again under the source SN, and then the early SN change occurs. It follows that premature SN change occurs in two different cases:

the first condition is as follows: the UE successfully accesses the target SN but SCG failure happens in a short time, and the MN decides that the UE establishes wireless connection again under the source SN. Specifically, as shown in fig. 4, if the SN change is successful (i.e. steps 401 to 408), and then an SCG failure occurs in the target SN (i.e. T-SN) soon, the UE sends an SCG failure information message to the MN (i.e. step 409), and then the MN sends an SCG failure indication message to the T-SN (i.e. step 410), so that the MN triggers the SN change to re-establish the MR-DC in the S-SN.

Case two: another scenario of premature handover is failure to access the T-SN, and the MN decides to re-establish the radio connection under the S-SN. Specifically, as shown in fig. 5, step 501 to step 508 are SN change procedures, and step 507 fails to access the T-SN randomly by the UE. The UE sends an SCG failure information message to the MN in step 509, so that the MN sends an SCG failure indication message to the S-SN in step 510, because the SCG failure information message may include the measurement result of the S-SN, and the MN triggers the SN change to re-establish the MR-DC in the S-SN.

If the time interval between the starting moment when the UE accesses the T-SN and the moment when the UE generates the SCG in the T-SN is less than or equal to a first preset time length and the UE accesses the S-SN again, the UE generates early auxiliary node transformation; or if the UE fails to access the T-SN and re-accesses the S-SN, the UE generates early auxiliary node transformation.

Sixth aspect, regarding SN change to wrong cell under MR-DC:

when SCG failure occurs in the process that the UE is changed from the access source SN to the access target SN or SCG failure occurs in a short period of time after the UE is accessed to the target SN, the MN determines that the UE establishes wireless connection under other SN cells which do not belong to the source SN and the target SN again, and then SN change occurs to an error cell.

Wherein the flow of SN change to the wrong cell is similar to the flow of premature SN change described in the fourth aspect, except that the last step triggers SN change for the MN, which is selected to be neither an S-SN nor a T-SN.

If the time interval between the starting moment when the UE accesses the T-SN and the moment when the UE generates the SCG in the T-SN is less than or equal to a first preset time length and the UE accesses the other SNs except the S-SN and the T-SN again, the UE generates an auxiliary node and converts the auxiliary node to an error cell; or if the UE fails to access the T-SN and the UE accesses the other SNs except the S-SN and the T-SN again, the UE changes the secondary node to the wrong cell.

Similarly, if the time interval between the starting time of the UE accessing the source main and auxiliary cells and the time of the UE generating SCG in the source main and auxiliary cells is greater than the second preset time, the UE generates too late main and auxiliary cell change.

If the time interval between the starting time of accessing the target main and auxiliary cell by the UE and the SCG time of the target main and auxiliary cell by the UE is less than or equal to a second preset time and the UE is accessed to the source main and auxiliary cell again, the UE is subjected to premature main and auxiliary cell change; or, if the UE fails to access the target primary and secondary cells and re-accesses the source primary and secondary cells, the UE may cause premature primary and secondary cell change.

If the time interval between the starting time of accessing the target main and auxiliary cells by the UE and the time of generating SCG in the target main and auxiliary cells is less than or equal to a second preset time length, and the UE is accessed again in other main and auxiliary cells except the source main and auxiliary cells and the target main and auxiliary cells, the main and auxiliary cells of the UE are changed to error cells; or, if the UE fails to access the target primary and secondary cells and the UE re-accesses other SNs except the source primary and secondary cells and the target primary and secondary cells, the UE changes the primary and secondary cells to the wrong cell.

Fig. 6 is a flowchart illustrating a method for determining an error type of secondary cell change according to an embodiment of the present invention. The method is applied to a first auxiliary node, wherein the first auxiliary node is one of auxiliary nodes involved in the auxiliary cell transformation process, and the auxiliary cell transformation comprises auxiliary cell transformation in the auxiliary node and auxiliary cell transformation between the auxiliary nodes.

As shown in fig. 6, the method may include the steps of:

step 601: and receiving the reference information sent by the main node.

The reference information comprises target information and/or auxiliary judgment information, the target information is information for reestablishing the auxiliary cell group connected with the MR-DC by multiple wireless access technologies, which is acquired by the main node after the auxiliary cell group fails, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in the MR-DC scene.

It should be noted here that the auxiliary decision information is reference information for determining the SCG for re-establishing the MR-DC, and after determining the SCG for re-establishing the MR-DC, the type of error of the auxiliary cell change in the MR-DC scenario may be determined according to the SCG for re-establishing the MR-DC. Therefore, in the embodiment of the present invention, the auxiliary decision information is used to determine the error type of the secondary cell change in the MR-DC scenario.

In addition, SCG failure is detected by the UE, and when detecting SCG failure, the UE notifies the MN and informs the MN of which SN has SCG failure. After learning that the SCG fails, the MN acquires information of the SCG for reestablishing the MR-DC and/or auxiliary decision information for determining an error type of the auxiliary cell change in the MR-DC scene. That is, after acquiring the SCG failure, the MN may choose to reestablish the SCG of MR-DC; the auxiliary decision information may also be sent to the first auxiliary node so that the first auxiliary node may choose to reestablish the SCG of the MR-DC by itself according to the auxiliary decision information.

Step 602: and judging the error type of the secondary cell transformation under the MR-DC scene according to the reference information.

When the reference information includes the target information, the SN may determine the error type of the current secondary cell transformation according to the target information included in the reference information, so as to optimize the configuration parameters according to the error type.

That is, in the case that the reference information includes the auxiliary decision information, the SN may select to reestablish the SCG of the MR-DC according to the auxiliary decision information included in the reference information, and further determine the error type of the current secondary cell transformation according to the selected SCG to reestablish the MR-DC, thereby optimizing the configuration parameters according to the error type.

As can be seen from the above description, in the embodiment of the present invention, in a scenario of secondary cell transformation in a secondary node or between secondary nodes, after SCG failure occurs, a MN may obtain reference information, and send the reference information to at least one SN involved in the secondary cell transformation process, so that the SN can determine an error type of the secondary cell transformation in an MR-DC scenario according to the reference information, where the reference information includes target information and/or auxiliary decision information, the target information is information of a secondary cell group that reestablishes multiple radio access technologies to connect to an MR-DC after the secondary cell group failure occurs, and the auxiliary decision information is used to determine the error type of the secondary cell transformation in the MR-DC scenario. Therefore, in the embodiment of the present invention, after SCG failure occurs, the MN transmits the SCG information for reestablishing MR-DC and/or the auxiliary decision information for determining the error type of secondary cell transformation in an MR-DC scene to at least one SN involved in the secondary cell transformation process, so that the SN can determine the error type of secondary cell transformation in the MR-DC scene.

For the situations of transformation of an early auxiliary node, transformation of a late auxiliary node, transformation of an auxiliary node to a wrong cell, transformation of a premature main and auxiliary cell, transformation of a late main and auxiliary cell, and transformation of a main and auxiliary cell to a wrong cell, relevant decision threshold parameters need to be adjusted, so that the transformation of the auxiliary cell can occur at a proper moment, and a correct target SN is selected.

Optionally, the target information includes at least one of the following;

In the process of judging the transformation error types of various secondary cells, when SCG failure occurs, the SN involved in the transformation process of the secondary cell cannot judge the error type, that is, cannot judge whether to transform to the wrong cell too early, too late or too late. Like the conventional handover MRO function, also the handover failure type needs to be judged from the re-established cell ID, the SN also has to know the SN information of the subsequent re-establishment MR-DC selection. The SN cannot trigger the subsequent MR-DC establishment in some SCG failure scenarios, and can only be triggered by the MN. The MN can send subsequent selection information to the SN, such as for secondary cell change between SNs (i.e., SN change), the MN can inform the SN, and subsequently establish MR-DC at S-SN, T-SN, or other SNs to assist the SN in making a determination of the error type of secondary cell change.

The UE history information is a list of information such as cells where the UE resides recorded according to a time sequence, each node of the list includes information such as cells where the UE resides/accesses and time, and both the network device and the UE maintain their respective UE history information, which is similar in content but has some differences.

In the 3GPP R17 release, the SN content is added to the conventional UE history information, mainly including the PSCell and the corresponding access time. The information of the primary serving cell (PCell) and the PSCell should have correlation, that is, the information of the PCell and the PSCell cells simultaneously accessed by the UE and the time information can be reflected, and the past recorded UE history information content can be referred to in the PSCell selection process.

Optionally, the first auxiliary node is a source auxiliary node or a target node auxiliary node, that is, after SCG failure occurs, the MN may send information of the SCG for reestablishing the MR-DC to at least one of the source auxiliary node and the target auxiliary node involved in the auxiliary cell change process.

or

As can be seen from the above, before or during the process of re-establishing the MR-DC, the reference information may be carried in an existing message during the interaction between the MN and the SN, for example, in fig. 3, when the MN needs to send the reference information to the S-SN, the reference information may be carried in one of the messages in the SCG failure indication information, the SgNB release request, and the release UE context; before the user equipment which fails to establish the secondary cell group reestablishes the MR-DC, during the process of reestablishing the MR-DC, or after the completion of reestablishing the MR-DC, a new message may be added to separately send the reference information, for example, in fig. 3, when the MN wants to send the reference information to the S-SN, a message may be added before step 303, or a message may be added between step 303 and step 310, or a message may be added after step 310, so that the reference information is carried in the added message and sent to the S-SN.

I.e., the MN sends reference information to the SN, the re-established MR-DC may not have started to be established, may be being established, or may have been established.

It should be noted here that, when the reference information includes the target message and the auxiliary decision information, the target message and the auxiliary decision information may be carried in one message to be sent, or may be carried in different messages to be sent separately.

As can be seen from the above, in the embodiment of the present invention, when the time interval between the time when the SCG failure occurs and the time when the reference information is received by the SN that receives the reference information is less than or equal to a certain threshold, the SN that receives the reference information may determine the error type of the secondary cell transformation, otherwise, it indicates that the time when the SN receives the reference information is later, that is, the received reference information is invalid, and the error type of the secondary cell transformation is not determined this time, so that parameter optimization may not be performed according to the error type of the secondary cell transformation this time.

Regardless of whether the SN receiving the reference information is the SN in which SCG failure occurs, the MN can display the notification of the SCG failure time, that is, directly send the SCG failure time to the SN that needs to receive the reference information. The time when the SCG failure occurs may be transmitted together with the reference information or may be transmitted separately.

It should be noted that the time threshold is a maximum time interval between the time when the SCG failure occurs and the time when the SN receives the reference information. In the embodiment of the present invention, the method for acquiring the time threshold is not specifically limited: for example, the user may set a specific value of the time threshold on the MN side and then the MN informs the SN, or the user directly sets a specific value of the time threshold on the SN side, or may set the time threshold to take a default value.

In this case, the time interval between the moment when the UE detects the SCG and the moment when the SN with the SCG failure receives the SCG failure indication information is short, so that when the MN sends the reference information to the SN with the SCG failure, the SN with the SCG failure can use the moment when the SN with the SCG failure receives the SCG failure indication information as the moment when the SN with the SCG failure fails, and thus, whether the time interval between the moment when the SN with the SCG failure receives the SCG failure indication information and the moment when the SN with the SCG failure receives the reference information is smaller than the pre-acquired time threshold or not can be directly judged. Therefore, when the SN of the received reference information is the SN at which SCG failure occurs, the timing of SCG failure can be implicitly notified.

Fig. 7 is a flowchart illustrating another method for determining an error type of secondary cell change according to an embodiment of the present invention. The method is applied to the main node, and the secondary cell transformation comprises secondary cell transformation in the secondary node and secondary cell transformation between the secondary nodes.

As shown in fig. 7, the method may include the steps of:

step 701: and after the auxiliary node fails in the auxiliary cell group, the main node acquires the reference information.

The reference information comprises target information and/or auxiliary judgment information, the target information is information acquired by the main node and used for reestablishing the auxiliary cell group connected with the MR-DC by multiple wireless access technologies, and the auxiliary judgment information is used for judging the error type of the auxiliary cell transformation in the MR-DC scene.

Step 702: and sending the reference information to at least one auxiliary node involved in the auxiliary cell transformation process, so that the at least one auxiliary node involved in the auxiliary cell transformation process judges the error type of the auxiliary cell transformation under the MR-DC scene according to the reference information.

Under the condition that the reference information comprises the auxiliary decision information, the SN can select to reestablish the SCG of the MR-DC according to the auxiliary decision information included in the reference information, and further judge the error type of the current auxiliary cell transformation according to the selected SCG for reestablishing the MR-DC, so that the configuration parameters are optimized according to the error type.

Optionally, the target information includes at least one of the following;

Optionally, the at least one secondary node involved in the secondary cell change process includes at least one of a source secondary node and a target secondary node. That is, after the SCG failure occurs, the MN may transmit information of the SCG for reestablishing the MR-DC to at least one of the source secondary node and the target secondary node involved in the secondary cell change procedure.

Optionally, the acquiring, by the master node, reference information includes:

That is, when the MN receives SCG failure information sent by the UE, the MN may be triggered to acquire SCG information for reestablishing MR-DC and/or auxiliary decision information for deciding an error type of secondary cell change in an MR-DC scenario, so that the MN sends the information to at least one secondary node involved in the secondary cell change process.

That is, the reference information may be sent to at least one secondary node involved in the secondary cell change procedure through an XN interface or an X2 interface.

or

As can be seen from the above, before or during the process of re-establishing the MR-DC, the reference information may be carried in an existing message during the interaction between the MN and the SN, for example, in fig. 3, when the MN needs to send the reference information to the S-SN, the reference information may be carried in one of the messages in the SCG failure indication information, the SgNB release request, and the release UE context; before or during the process of re-establishing the MR-DC or after the completion of re-establishing the MR-DC, a new message may be added to separately send the reference information, for example, in fig. 3, when the MN needs to send the reference information to the S-SN, a message may be added before step 303, or a message may be added between step 303 and step 310, or a message may be added after step 310, so that the reference information is carried in the added message and sent to the S-SN.

Optionally, the method further includes:

In this embodiment of the present invention, the SN at the first time is the same as the SN at which the reference information is received, that is, in the embodiment of the present invention, to which SNs, the MN needs to send the reference information, and then the SN at the first time can be sent to which SNs.

In addition, after the SN receives the first time and the reference information, the SN judges that the time interval between the first time and the time when the reference information is received is smaller than or equal to a time threshold value acquired in advance, and if yes, the SN judges the error type of the auxiliary cell transformation in the MR-DC scene according to the reference information.

In summary, the specific implementation manner of the method for determining the error type of secondary cell change in the embodiment of the present invention can be as follows:

implementation mode one

In the late SN change scenario, referring to fig. 3, the MN sends an SCG failure indication message to the S-SN in step 302. The MN also needs to send target information (i.e., information of subsequently selected SCG to reestablish MR-DC) to the S-SN, which may be added in the SCG failure indication message, or may be added with messages sent to the S-SN at other existing MNs (e.g., SgNB release request, release UE context message), or a new message is added to convey the information.

The MN can also send auxiliary judgment information to the S-SN, and the S-SN selects to reestablish the SCG information of the MR-DC according to the auxiliary judgment information. The auxiliary decision information includes UE context information of the S-SN and/or history information of UEs where SCG failure occurred.

Wherein, since UE context information also exists in the S-SN, the MN may not send the UE context information to the S-SN, but the UE history information in the S-SN may not be the latest version, so the MN is required to send the UE history information to the S-SN.

The assistance decision information may be added in the SCG failure indication message, or a message sent to the S-SN at the existing other MN (e.g. SgNB release request, release UE context message) may be added, or a new message may be added to convey the information.

The timing when the MN sends the target information and/or the auxiliary decision information to the S-SN may be immediately sent after receiving the SCG failure information, or may be sent during the MR-DC re-establishment process, or sent after completing the MR-DC re-establishment.

In addition, the re-establishment of SCG information of MR-DC may include information of SN nodes to which the re-establishment of SCG of MR-DC belongs and/or ID of PSCell in the re-establishment of SCG of MR-DC.

In addition, after receiving the target information and/or the auxiliary decision information sent by the MN, the S-SN may also consider temporal correlation when determining the error type of the secondary cell change according to the target information and/or the auxiliary decision information. That is, when the SCG occurs and the S-SN receives the target information and/or the auxiliary decision information relatively close to each other (that is, the time interval between the SCG and the S-SN is less than or equal to the time threshold obtained in advance), the S-SN determines the type of the secondary cell change error according to the target information and/or the auxiliary decision information.

For example, in fig. 3, when the target information and/or the auxiliary decision information is carried in the SCG failure indication information in step 302 and sent to the S-SN, if the time of sending the SCG information in step 301 is relatively close to the time of sending the SCG failure indication information in step 302 (that is, less than or equal to the time threshold obtained in advance), it indicates that there is correlation in time, and then the S-SN may determine the error type of the secondary cell change according to the target information.

Second embodiment

In one scenario of premature SN change, referring to fig. 4, the MN sends an SCG failure indication message to the T-SN in step 410. The MN also needs to send target information (i.e., information for subsequently selected SCGs to re-establish MR-DC) to the T-SN, which may be added in an SCG failure indication message, or may be added with messages sent to the T-SN at other existing MNs, or a new message to convey this information.

The MN can also send auxiliary judgment information to the T-SN, and the T-SN selects to reestablish the SCG information of the MR-DC according to the auxiliary judgment information. The auxiliary decision information includes UE context information of the S-SN and/or history information of UEs where SCG failure occurred.

Wherein, since UE context information also exists in the T-SN, the MN may not send the UE context information to the T-SN, but the UE history information in the T-SN may not be the latest version, so the MN is required to send the UE history information to the T-SN.

The auxiliary decision information may be added to the SCG failure indication message, or a message sent to the T-SN at an existing other MN may be added, or a new message may be added to convey the information.

The timing when the MN sends the target information and/or the auxiliary decision information to the T-SN may be immediately sent after receiving the SCG failure information, may also be sent in the process of MR-DC re-establishment, or may be sent after completing the MR-DC re-establishment.

In addition, after receiving the target information and/or the auxiliary decision information sent by the MN, the T-SN may also consider temporal correlation when determining the error type of the secondary cell change according to the target information and/or the auxiliary decision information. That is, when the SCG occurs and the T-SN receives the target information and/or the auxiliary decision information at a time closer to each other (that is, the time interval between the two is smaller than the time threshold acquired in advance), the T-SN determines the type of the auxiliary cell change error according to the target information and/or the auxiliary decision information.

For example, in fig. 4, when the target information and/or the auxiliary decision information is carried in the SCG failure indication information in step 410 and sent to the T-SN, if the time of sending the SCG information in step 409 is closer to the time of sending the SCG failure indication information in step 410 (that is, is less than or equal to the time threshold obtained in advance), it indicates that there is correlation in time, and then the T-SN may determine the error type of the secondary cell transformation according to the target information and/or the auxiliary decision information.

EXAMPLE III

In another scenario of premature SN change, see fig. 5, in step 509, the MN receives SCG failure information sent by the UE. Wherein, since the SCG failure information received by the MN may include the measurement result of the S-SN, the MN needs to send an SCG failure indication message to the S-SN.

In addition, the MN also needs to send target information (i.e., information of subsequently selected SCGs to reestablish MR-DC) to the S-SN, which may be added in the SCG failure indication message, or may be added with messages sent to the S-SN at other existing MNs, or a new message is added to convey the information.

Wherein the MN is required to send the UE context information to the S-SN, since the S-SN may have deleted the UE context information. In addition, the UE history information in the S-SN may not have been the latest version, so the MN is also required to send the UE history information to the S-SN.

The auxiliary decision information may be added to the SCG failure indication message, or a message sent to the S-SN at an existing other MN may be added, or a new message may be added to convey the information. Wherein the auxiliary decision information is used to instruct the S-SN to select SCG information for reestablishing MR-DC.

The occasion when the MN sends the target information and/or the auxiliary decision information to the S-SN may be immediately sent after receiving the SCG failure information, or may be sent in the MR-DC re-establishment process, or sent after the user equipment in which the auxiliary cell group failure occurs completes the MR-DC re-establishment.

In addition, after receiving the target information and/or the auxiliary decision information sent by the MN, the S-SN may also consider temporal correlation when determining the error type of the secondary cell change according to the target information and/or the auxiliary decision information. That is, when the failure time of the UE randomly accessing the T-SN is closer to the time when the S-SN receives the target information and/or the auxiliary decision information (that is, the time interval between the two is smaller than the time threshold obtained in advance), the S-SN determines the type of the secondary cell change error according to the target information and/or the auxiliary decision information.

For example, in fig. 5, it may be agreed in advance that the failure time of the UE randomly accessing the T-SN is the time when the UE sends the SCG failure information, and when the target information and/or the auxiliary decision information is sent to the S-SN in the SCG failure indication information carried in step 510, if the time when the SCG information is sent in step 509 and the time when the SCG failure indication information is sent in step 410 are closer in time (that is, less than or equal to the time threshold obtained in advance), which indicates that there is correlation in time, the S-SN may determine the error type of the secondary cell transformation according to the target information and/or the auxiliary decision information.

Alternatively, the S-SN may be notified by the MN of the time of the UE 'S failure to randomly access the T-SN, e.g., the MN communicates the time of the UE' S failure to randomly access the T-SN to the S-SN over an XN or X2 interface. If the time of the failure time of the UE to randomly access the T-SN received by the S-SN and the time of the UE receiving the target information and/or the auxiliary decision information are relatively close (i.e. less than or equal to the pre-obtained time threshold), indicating that there is correlation in time, the S-SN may determine the error type of the secondary cell transformation according to the target information and/or the auxiliary decision information.

In addition, it should be noted that, for a scenario in which the SN change is to the wrong cell, after the MN sends the sending method and sending timing of the target information and/or the auxiliary decision information and receives the target information and/or the auxiliary decision information, the condition for determining the error type of the auxiliary cell according to the target information and/or the auxiliary decision information is similar to the two scenarios in the second embodiment and the third embodiment, reference may be made to the relevant description in the second embodiment and the third embodiment, and details are not repeated here.

As can be seen from the above, in the MR-DC scenario, if SCG failure occurs, part of the information is lacking when the SN involved in the secondary cell change process performs SN change failure type determination. The embodiment of the invention adds the reference information (including the target information and/or the auxiliary decision information) provided by the MN to the SN on the interface, so that the SN can conveniently determine which error type belongs to, thereby being beneficial to optimizing the configuration parameters.

The method for determining the error type of secondary cell change according to the embodiment of the present invention is described above, and a device for determining the error type of secondary cell change according to the embodiment of the present invention is described below with reference to the accompanying drawings.

Referring to fig. 8, an embodiment of the present invention further provides a device for determining an error type of secondary cell change, which is applied to a first secondary node, where the first secondary node is one of secondary nodes involved in a secondary cell change process, and the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes; the device comprises:

a first receiving module 801, configured to receive reference information sent by a master node, where the reference information includes target information and/or auxiliary decision information, the target information is information obtained by the master node to reestablish an auxiliary cell group in which multiple radio access technologies are connected to an MR-DC after an auxiliary cell group failure occurs, and the auxiliary decision information is used to determine an error type of the auxiliary cell transformation in an MR-DC scenario;

a determining module 802, configured to determine, according to the reference information, an error type of the secondary cell change in an MR-DC scene.

Optionally, the target information includes at least one of the following;

Optionally, when the reference information includes the auxiliary decision information, the decision module 802 is specifically configured to:

Optionally, the first receiving module 801 is specifically configured to:

or

Optionally, the apparatus further comprises:

the first time information acquisition module is used for receiving a first moment of failure of the secondary cell group sent by the main node;

the determining module 802 is specifically configured to:

Optionally, the apparatus further comprises:

a second time information obtaining module, configured to receive an auxiliary cell group failure indication message sent by the master node, and determine a time when the auxiliary cell group failure indication message is received as a third time;

the determining module 802 is specifically configured to:

Referring to fig. 9, an embodiment of the present invention further provides a device for determining an error type of secondary cell change, which is applied to a primary node, where the secondary cell change includes secondary cell change in a secondary node and secondary cell change between secondary nodes; the device comprises:

an information obtaining module 901, configured to, after an auxiliary cell group failure occurs in an auxiliary node, obtain reference information by a master node, where the reference information includes target information and/or auxiliary decision information, the target information is information obtained by the master node, where multiple radio access technologies are reestablished to connect an MR-DC auxiliary cell group, and the auxiliary decision information is used to determine an error type of the auxiliary cell transformation in an MR-DC scenario;

a first sending module 902, configured to send the reference information to at least one secondary node involved in the secondary cell change process, so that the at least one secondary node involved in the secondary cell change process determines, according to the reference information, an error type of the secondary cell change in an MR-DC scenario.

Optionally, the information obtaining module 901 is specifically configured to:

Optionally, the first sending module 902 is specifically configured to:

Optionally, the target information includes at least one of the following;

Optionally, the first sending module 902 is specifically configured to:

or

Optionally, the apparatus further comprises:

and a second sending module, configured to send a first time to at least one secondary node involved in the secondary cell change process, where the first time is a time at which a secondary cell group failure occurs.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

The embodiment of the invention also provides a system for judging the error type of the secondary cell change, which comprises the network equipment applied to the first secondary node and the network equipment applied to the main node.

An embodiment of the present invention further provides a network device, as shown in fig. 10, the network device includes a memory 1001, a transceiver 1002, and a processor 1003;

a memory 1001 for storing a computer program;

a transceiver 1002 for receiving and transmitting data under the control of the processor 1003;

in a first aspect, when the network device is applied to a first secondary node, the processor 1003 is configured to read the computer program in the memory 1001 and perform the following operations:

controlling the transceiver 1002 to receive reference information sent by a master node, where the reference information includes target information and/or auxiliary decision information, the target information is information obtained by the master node to reestablish a plurality of radio access technologies to connect an MR-DC secondary cell group after a failure of the secondary cell group occurs, and the auxiliary decision information is used to determine an error type of secondary cell transformation in an MR-DC scenario;

judging the error type of the secondary cell transformation under the MR-DC scene according to the reference information;

the first auxiliary node is one of auxiliary nodes involved in an auxiliary cell change process, and the auxiliary cell change comprises auxiliary cell change in the auxiliary nodes and auxiliary cell change among the auxiliary nodes.

Optionally, the target information includes at least one of the following;

or

In a second aspect, when the network device is applied to a primary node involved in a secondary cell change procedure, the processor 1003 is configured to read the computer program in the memory 1001 and execute the following operations:

controlling the transceiver 1002 to send the reference information to at least one secondary node involved in the secondary cell change process, so that the at least one secondary node involved in the secondary cell change process determines the error type of the secondary cell change in the MR-DC scenario according to the reference information;

wherein the secondary cell change comprises secondary cell change in the secondary node and secondary cell change between the secondary nodes.

Optionally, the acquiring, by the master node, reference information includes:

Optionally, the target information includes at least one of the following;

or

Optionally, the processor 1003 is further configured to:

Where in fig. 10 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1003 and various circuits of memory represented by memory 1001 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 1003 is responsible for managing the bus architecture and general processing, and the memory 1001 may store data used by the processor 1001 in performing operations.

The processor 1003 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

An embodiment of the present invention also provides a processor-readable storage medium storing a computer program for causing a processor to execute a method of determining an error type of secondary cell change.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. 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-executable instructions. These computer-executable 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 processor-executable instructions may also be stored in a processor-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 processor-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 processor-executable 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 application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for judging the error type of secondary cell change is characterized in that the method is applied to a first secondary node, the first secondary node is one of secondary nodes involved in the secondary cell change process, and the secondary cell change comprises secondary cell change in the secondary nodes and secondary cell change among the secondary nodes; the method comprises the following steps:

2. The method of claim 1, wherein the target information comprises at least one of the following;

3. The method of claim 1, wherein the auxiliary decision information comprises at least one of the following:

4. The method according to claim 1 or 3, wherein when the reference information includes the auxiliary decision information, the determining the error type of the secondary cell change in the MR-DC scenario according to the reference information comprises:

5. The method of claim 1, wherein the receiving the reference information sent by the primary node comprises:

or

6. The method of claim 1, wherein before determining the error type of the secondary cell change in the MR-DC scenario according to the reference information, the method further comprises:

7. The method of claim 1, wherein before determining the error type of the secondary cell change in the MR-DC scenario according to the reference information, the method further comprises:

8. The method of claim 1, wherein the error type of the secondary cell change comprises at least one of:

9. The method of claim 1, wherein the first secondary node is a source secondary node or a target secondary node.

10. A method for judging error types of secondary cell transformation is characterized in that the method is applied to a main node, and the secondary cell transformation comprises secondary cell transformation in a secondary node and secondary cell transformation between the secondary nodes; the method comprises the following steps:

11. The method of claim 10, wherein the obtaining the reference information by the primary node comprises:

12. The method of claim 10, wherein the sending the reference information to at least one secondary node involved in the secondary cell change procedure comprises:

13. The method of claim 10, wherein the target information comprises at least one of the following;

14. The method of claim 10, wherein the auxiliary decision information comprises at least one of the following:

15. The method of claim 10, wherein the sending the reference information to at least one secondary node involved in the secondary cell change procedure comprises:

or

16. The method of claim 10, wherein the method further comprises:

17. The method of claim 10, wherein the error type of the secondary cell change comprises at least one of:

18. The method of claim 10, wherein the at least one secondary node involved in the secondary cell change procedure comprises at least one of a source secondary node and a target secondary node.

19. The network equipment is applied to a first auxiliary node, wherein the first auxiliary node is one of auxiliary nodes involved in an auxiliary cell change process, and the auxiliary cell change comprises auxiliary cell change in the auxiliary node and auxiliary cell change between the auxiliary nodes;

the network device includes a memory, a transceiver, a processor:

20. The network device of claim 19, wherein the target information comprises at least one of;

21. The network device of claim 19, wherein the assistance decision information comprises at least one of:

22. The network device according to claim 19 or 21, wherein when the reference information comprises the auxiliary decision information, the deciding the error type of the secondary cell change in MR-DC scenario according to the reference information comprises:

23. The network device of claim 19, wherein the receiving the reference information sent by the master node comprises:

or

24. The network device of claim 19, wherein before the processor determines the error type of the secondary cell change in the MR-DC scenario according to the reference information, the transceiver is further configured to:

25. The network device of claim 19, wherein before the processor determines the error type of the secondary cell change in the MR-DC scenario according to the reference information, the processor is further configured to:

26. A network device, wherein the network device is applied to a master node, and wherein the secondary cell change comprises a secondary cell change within a secondary node and a secondary cell change between secondary nodes;

the network device includes a memory, a transceiver, a processor:

27. The network device of claim 25, wherein the master node obtains reference information comprising:

28. The network device of claim 25, wherein the target information comprises at least one of;

29. The network device of claim 25, wherein the assistance decision information comprises at least one of:

30. The network device of claim 25, wherein the sending the reference information to at least one secondary node involved in the secondary cell change procedure comprises:

or

31. The network device of claim 25, wherein the processor is further configured to:

32. The device for judging the error type of the secondary cell change is characterized by being applied to a first secondary node, wherein the first secondary node is one of secondary nodes involved in the secondary cell change process, and the secondary cell change comprises secondary cell change in the secondary node and secondary cell change between the secondary nodes; the device comprises:

33. The device for judging the error type of the secondary cell change is characterized by being applied to a main node, wherein the secondary cell change comprises the secondary cell change in a secondary node and the secondary cell change between the secondary nodes; the device comprises:

34. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 9, or to perform the method of any one of claims 10 to 18.