CN115226123A

CN115226123A - Method and device for processing historical information of terminal equipment UE

Info

Publication number: CN115226123A
Application number: CN202110432640.XA
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: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-10-21

Abstract

The embodiment of the application provides a method and a device for processing historical information of terminal equipment (UE). The method comprises the following steps: receiving indication information sent by an auxiliary node (SN), wherein the indication information is used for indicating the MN to inform the SN of the condition that a primary cell (PCell) in the MN is transformed; and sending PCell transformation information to the SN, wherein the PCell transformation information is used for triggering the SN to update the locally stored first UE historical information. According to the method and the device for processing the historical information of the UE of the terminal equipment, the SN sends the indication information which indicates the MN to notify the PCell transformation information to the corresponding SN, so that the information interaction between the MN and the SN is enhanced, the PCell transformation information is transmitted, the correct corresponding relation between the PCell and the PSCell in the historical information of the UE is ensured, and the network performance is improved.

Description

Method and device for processing historical information of terminal equipment UE

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for processing history information of a terminal device UE.

Background

An MR-DC (Multi-Radio Access Technology Dual Connectivity) architecture is supported in a New 5G NR (New Radio) air interface. UE (User Equipment/terminal Equipment) can access MN (Master Node) and SN (Secondary Node) at the same time, and MN and SN may be in different systems, but there is correlation between MN and SN. The UE can conveniently select the PSCell (Primary Secondary Cell) under the reasonable SN according to the PCell (Primary Cell) under the current resident MN by combining the UE historical information maintained by the UE.

When a PCell change occurs in an MN node, a corresponding relationship between a PCell (Primary Cell) and a PSCell (Primary Secondary Cell) that causes an error to be generated by the MN or an SN node when UE history information is updated, which causes a UE (User Equipment/terminal Equipment) to select an erroneous PSCell Cell, or a selected PSCell signal is not good or a radio link fails, etc.

Disclosure of Invention

To solve the problems in the prior art, embodiments of the present application provide a method and an apparatus for processing history information of a terminal device UE.

In a first aspect, an embodiment of the present application provides a method for processing history information of a terminal device UE, which is applied to a master node MN, and includes:

receiving indication information sent by an auxiliary node (SN), wherein the indication information is used for indicating the MN to inform the SN of the condition that a primary cell (PCell) in the MN is transformed;

and sending PCell transformation information to the SN, wherein the PCell transformation information is used for triggering the SN to update the locally stored first UE historical information.

Optionally, the sending PCell transformation information to the SN includes:

sending SN modification request information to the SN, wherein the SN modification request information carries the PCell transformation information;

the method further comprises the following steps: and receiving the SN response message sent by the SN.

Optionally, the method further comprises:

and if the SN response message carries third UE historical information, updating second UE historical information locally stored by the MN based on the third UE historical information.

Wherein the third UE history information is a subset of the updated first UE history information.

Optionally, the sending PCell transformation information to the SN specifically includes:

sending indication information for indicating that the PCell is transformed to the SN; or,

and sending the transformed PCell cell identification to the SN.

Optionally, before receiving the indication information sent by the secondary node SN, the method further includes:

sending SN increasing information to the SN;

the SN addition message carries fourth UE historical information, and the fourth UE historical information is a subset of second UE historical information locally stored by the MN; or, the SN addition message does not carry the fourth UE history information.

Optionally, the third UE history information and the fourth UE history information include: the corresponding relation between the PCell and the PSCell of the primary and secondary cells in the SN and the corresponding access time of the UE, or the information of the PCell of the primary cell in the MN and the corresponding access time of the UE.

Optionally, before the sending PCell transformation information to the SN, the method further includes:

receiving a Radio Resource Control (RRC) connection reconfiguration completion message, and determining that the switching between the PCell in the MN is successful;

the sending PCell transformation information to the SN specifically includes:

and after the successful switching among the PCell in the MN, sending PCell transformation information to the SN.

In a second aspect, an embodiment of the present application further provides a method for processing history information of a terminal device UE, which is applied to an auxiliary node SN, and includes:

sending indication information to a main node MN, wherein the indication information is used for indicating the MN to inform the SN of the condition that a PCell of a main cell in the MN is transformed;

and receiving PCell transformation information sent by the MN, and updating locally stored first UE historical information based on the PCell transformation information.

Optionally, the receiving PCell transformation information sent by the MN includes:

receiving an SN modification request message sent by the MN, wherein the SN modification request message carries the PCell transformation information;

the method further comprises the following steps: and sending an SN response message to the MN.

Optionally, the SN response message carries third UE history information, where the third UE history information is a subset of the updated first UE history information.

Optionally, before sending the indication information to the main contact MN, the method further includes:

receiving SN increasing information sent by the MN; the SN addition message carries fourth UE historical information, and the fourth UE historical information is a subset of second UE historical information locally stored by the MN; or, the SN addition message does not carry the fourth UE history information.

In a third aspect, an embodiment of the present application further provides a master node MN device, including a memory, a transceiver, and a processor;

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for executing the computer program in the memory and implementing the steps of:

In a fourth aspect, an embodiment of the present application further provides an auxiliary node SN device, including a memory, a transceiver, and a processor;

In a fifth aspect, an embodiment of the present application further provides an apparatus for processing history information of a terminal device UE, where the apparatus includes:

a receiving module, configured to receive indication information sent by an auxiliary node SN, where the indication information is used to indicate the MN to notify the SN of a situation that a primary cell PCell in the MN is transformed;

and the sending and maintaining module is used for sending PCell transformation information to the SN, wherein the PCell transformation information is used for triggering the SN to update the locally stored first UE historical information.

In a sixth aspect, an embodiment of the present application further provides an apparatus for processing history information of a terminal device UE, where the apparatus includes:

an information sending module, configured to send indication information to a master node MN, where the indication information is used to indicate the MN to notify the SN of a situation where a primary cell PCell in the MN is transformed;

and the receiving processing module is used for receiving the PCell transformation information sent by the MN and updating the locally stored first UE historical information based on the PCell transformation information.

In a seventh aspect, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the steps of the method for processing history information of a terminal equipment UE according to the first aspect described above, or execute the steps of the method for processing history information of a terminal equipment UE according to the second aspect described above.

According to the method and the device for processing the historical information of the UE of the terminal equipment, the indication information is sent through the SN, the indication information indicates the MN to notify the PCell transformation information to the corresponding SN, information interaction between the MN and the SN is strengthened, the PCell transformation information is transmitted, the correct corresponding relation between the PCell and the PSCell in the historical information of the UE is guaranteed, and network performance is improved.

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 embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a diagram of a network architecture corresponding to an EN-DC scenario;

FIG. 2 is a flow diagram of SN addition in an EN-DC scenario;

fig. 3 is a flowchart of processing of UE history information in the case of PSCell change within an SN node;

fig. 4 is a flowchart illustrating a method for processing history information of a terminal device UE according to an embodiment of the present application;

fig. 5 is a second flowchart of a method for processing history information of a terminal device UE according to an embodiment of the present application;

FIG. 6-1 is a flowchart of a method for processing history information of a terminal device UE according to an embodiment of the present application;

fig. 6-2 is a second flowchart of a method for processing history information of a terminal device UE according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a master node MN provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a secondary node SN provided in the embodiment of the present application;

fig. 9 is a schematic structural diagram of a processing apparatus for processing history information of a terminal device UE on a master node MN side according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a device for processing history information of a terminal device UE on a secondary node SN side according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B, and 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 NR new air interface supports MR-DC architecture, i.e. dual connectivity under multiple access technologies. The terminal can access to the MN (primary node) and the SN (secondary node) simultaneously, the MN and the SN may be different systems, and at this time, there may be a plurality of cells accessed. The primary cell accessed in the MN or SN is the SpCell, the SpCell in the MN is the PCell (primary cell), and the SpCell in the SN is the PSCell (primary and secondary cell).

Fig. 1 is a network architecture diagram corresponding to an EN-DC scenario, which is taken as an example in fig. 1. If a terminal accesses an eNB as a MN (primary node) and an EN-gNB as an SN (secondary node), this special multi-connection scenario is called an EN-DC (E-UTRA-NR dual connectivity) scenario.

Fig. 2 is a flowchart of SN addition in an EN-DC scenario, and as shown in fig. 2, the specific steps of the flowchart are as follows:

step 0: and the terminal reports a measurement report including measurement results of a plurality of cells measured by the terminal according to the base station measurement configuration information.

Step 1: the MN sends an SGNB ADDITION REQUEST message to the SNs, and if the measurement report includes cells of multiple SNs, it can send an SGNB ADDITION REQUEST message to each SN, respectively. The measurement results for multiple cells may be included in each SGNB ADDITION REQUEST message.

Step 2: the SN receives the SGNB ADDITION REQUEST message, determines the appropriate PSCell/SCell/beam, and sends an SGNB ADDITION REQUEST ACKNOWLEDGE to the MN.

And step 3: the MN receives an SGNB ADDITION REQUEST acknowledgement message sent by a plurality of SNs, selects a proper SN node according to an algorithm, and sends an RRCConnectionReconfiguration message to the terminal.

Step 4-6: and the terminal performs random access in the target cell according to the content of the RRCConnectionReconfiguration message, and completes the process of adding the auxiliary node.

The UE history information recorded in the present application is a list, and information such as a cell where the UE resides is recorded in the list according to a time sequence, specifically including information such as a cell identifier where the terminal resides/accesses and access time. The base station and the terminal maintain respective UE history information, the contents are similar but have some differences, and the application mainly discusses the UE history information maintained by the base station.

And the UE history information maintained by the base station comprises the cell and access time information of each PCell of the UE in a connection state. And when the switching occurs, the source base station sends the maintained UE history information to the switched target base station through the switching request message, and the switched target base station continuously maintains the UE history information. Since the base station is not aware of the idle state of the terminal, the UE history information maintained by the base station does not include the idle UE information.

The base station maintains and transmits the UE historical information in the switching process, wherein the LTE system mainly comprises S1 switching and X2 switching, and the NR system mainly comprises Xn switching and NG switching.

In the 3gpp r17 release, it is proposed to add SN content, mainly including PSCell and corresponding access time, to the above conventional UE history information. And the PCell information and the PSCell information contained in the UE history information should have correlation, that is, the PCell and PSCell cells and time information simultaneously accessed by the UE are represented by the correlation.

UE history information maintenance mechanism of MN and SN: MN independently maintains UE history information; UE history information may also be maintained independently for increased SNs. For example: when the PSCell in the SN node changes, the MN node cannot know that the PSCell in the SN node changes, but the SN is responsible for maintaining the UE history information of the SN because the SN node is added. When the SN node is deleted, the SN may send the maintained UE history information to the MN, and at this time, the MN may merge the received UE history information with locally stored UE history information maintained by the MN to generate complete UE history information having associated MN and SN.

Fig. 3 is a flowchart of processing UE history information in the case of PSCell change in an SN node, and as shown in fig. 3, the specific steps of the process are as follows:

step 0, accessing UE into UE history information (PCell: 0, PSCell: null) of a point 0,A of a MN PCell cell identifier. Since the UE does not have an SN at this time, the PSCell of the SN is empty.

Step 1, the UE establishes dual connection. And the MN sends an SN addition message to the SN, wherein the SN addition message contains the historical information of the UE at the point A maintained by the MN.

At this point, the MN continues to maintain the UE history information stored at point a.

For the SN, the SN determines the UE history information (PSCell: 0) of the point B, or obtains the UE history information (PCell: 0, PSCell: empty) > (PCell: 0, PSCell.

Step 2. The SN updates the point-C UE history information (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell.

And step 3. And the SN receives the release message sent by the MN, and at the moment, the SN sends the UE history information of the point C to the MN. The MN generates UE history information (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell.

In addition, the MN can also generate complete UE history information according to the received UE history information sent by the SN. The UE history information may further include time when the UE accesses the cell, or only include a cell identifier of the UE accessing the cell.

Wherein, the point A (PCell: 0, PSCell: empty) represents the information of the PCell cell and the PSCell cell accessed by the UE at the point A, and the expression meanings of other time points are the same and are not described again.

And step 4. And the MN sends an SN addition message to the SN, wherein the SN addition message contains the UE history information of the D point maintained by the MN.

It should be noted that, the UE that triggers the MN to send the addition message to the SN in step 1 and step 4 is the same UE.

At this time, the SN determines the UE history information of point E (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell.

Step 5, if switching occurs among MN nodes and the SN node also changes, namely the MN accessed by the UE is switched from MN0 to MN1; the accessed SN is switched from SN0 to SN1.

Before switching occurs, MN0 sends SN modification information to SN0, receives SN0 and sends SN response information, the SN response information carries UE history information stored by SN, MN0 sends the UE history information stored by SN in the SN response information by switching request information to MN1. And the MN1 generates F-point UE historical information according to the received UE historical information.

Namely, F point UE history information (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell. Since SN0 is also switching, MN1 considers the PSCell of the current SN as empty.

After the SN is successfully switched, MN1 sends F-point UE history information to the switched SN1, and then the SN1 generates G-point UE history information (PCell: 0, PScell: empty) - > (PCell: 0, PScell. Alternatively, UE history information (PSCell: 0) - > (PSCell: 1) - > (PSCell: empty) - > (PSCell: 0) - > (PSCell: 1) of the G point is generated.

In the dual connectivity mode, when the SN increases, the MN sends UE history information to the SN. When the SN releases, the SN sends UE history information to the MN. The MN can also acquire the UE history information maintained by the SN from the SN by triggering the SN modification request message periodically or irregularly. However, when the PCell changes in the MN node, because the SN node cannot know that the UE history information maintained by the MN and the SN node is inconsistent, or the PCell information included in the generated UE history information is deviated from the PScell information, how to avoid the deviation needs to modify the protocol content, so as to increase the interaction between the MN and the SN, and ensure that the SN can normally maintain the UE history information in a scenario where switching occurs in the MN node.

The core idea of each embodiment of the invention is that under the MR-DC scene, the indication information sent by the SN is used for triggering the MN to send PCell transformation information in the MN node to the SN under the condition that the MN is switched by the PCell in the node, and the SN or the MN node updates locally stored UE historical information based on the transformation information.

The UE history information maintained by the MN and the SN described in the embodiments of the present application refers to UE history information of the same UE.

The following describes a method for processing history information of a terminal device UE according to embodiments of the present application. There are three major MR-DC (Multi-Radio Dual Connectivity, dual Connectivity for multiple Radio access technologies) definitions according to 3gpp 37.340, namely EN-DC (E-UTRA-NR Dual Connectivity, evolved universal terrestrial Radio access network-New Radio Dual Connectivity), NE-DC (New Radio-E-UTRA Dual Connectivity, new Radio-evolved universal terrestrial Radio access network-New Radio Dual Connectivity), and nen-DC (NG-RAN E-UTRA-NR Dual Connectivity,5G Radio access network-evolved universal terrestrial Radio access network-New Radio Dual Connectivity), that is, there are many scenarios of intra-node handover scenarios, and this embodiment mainly takes the PCell handover in the MN node as an example. However, the present application is not limited to PCell transformation in MN nodes, and may also include PSCell transformation in SN nodes.

Fig. 4 is a flowchart illustrating a method for processing history information of a terminal device UE according to an embodiment of the present application. As shown in fig. 4, the method for processing history information of terminal device UE, applied to a master node MN, includes:

step 401, receiving indication information sent by an auxiliary node SN, where the indication information is used to indicate that the MN notifies the SN of a situation that a primary cell PCell in the MN is transformed;

specifically, the UE accesses a certain PCell in the MN in an initial state. And determining the SN of the auxiliary node needing to be accessed through measurement, sending a measurement result to the MN by the UE, and sending an SN addition message to the SN by the MN at the moment. The MN receives the indication information sent by the corresponding SN on the interface, namely the indication information indicates that the MN is switched among the cells in the MN node, and then actively informs the SN.

Step 402, sending PCell transformation information to the SN, where the PCell transformation information is used to trigger the SN to update locally stored first UE history information.

Specifically, the primary node MN generates the transformation of the PCell in the node, and needs to send the corresponding PCell transformation information to the SN node, and the SN node receives the PCell transformation information and updates the first UE history information in combination with the first UE history information locally stored before the transformation information is not received.

According to the method for processing the historical information of the terminal equipment UE, the indication information sent by the SN is used, when PCell transformation occurs in the MN node, the corresponding PCell transformation information is sent actively, interaction between the MN and the SN is strengthened, the PCell transformation information is transmitted, the correct corresponding relation between the PCell and the PSCell is ensured, and the network performance is improved.

On the basis of the foregoing embodiment, optionally, the sending PCell transformation information to the SN includes:

and sending an SN modification request message to the SN, wherein the SN modification request message carries the PCell transformation information.

Specifically, after PCell transformation occurs in the MN node, the SN modification request message is sent to notify the corresponding SN node, and the message carries PCell transformation information. The PCell transformation information herein can specifically adopt the following two ways:

in the first mode, PCell transformation information adopts a flag bit mode, namely, a flag bit is adopted in a message body to inform an SN node, PCell in a corresponding MN node is transformed, and PCell cell identification is not specifically informed; for example, a bit initial value in the message body is 0, after the PCell in the MN node is transformed, the corresponding bit value is transformed into 1, the SN node can determine that the PCell in the corresponding MN node is transformed after receiving the message, and the PCell in the UE history information generated at the moment is recorded as null.

And secondly, adopting the PCell cell identification for the PCell transformation information, namely directly informing the changed PCell cell identification in the message body. At this time, the corresponding SN addition message needs to carry the PCell cell identifier locally stored by the MN, so that after the SN node receives the SN modification request message, the SN node determines that the PCell in the corresponding MN node is transformed by comparing the PCell cell identifier carried in the previous SN addition message with the PCell cell identifier in the currently received SN modification request message.

Optionally, the method further includes: and receiving the SN response message sent by the SN. After the MN node sends the SN modification request message, the SN replies to the MN node after performing corresponding processing aiming at the message, and sends a corresponding SN response message to the MN node.

According to the method for processing the historical information of the terminal equipment UE, the indication information sent by the SN is used for actively sending the corresponding change information when the PCell transformation occurs in the MN node, so that the interaction between the MN and the SN is strengthened, the PCell transformation information is transmitted, the correct corresponding relation between the PCell and the PSCell is ensured, and the network performance is improved.

On the basis of the foregoing embodiment, optionally, if the SN response message carries third UE history information, updating second UE history information locally stored by the MN based on the third UE history information;

Specifically, the third UE history information may be all or part of the updated first UE history information.

The PCell in the MN node is transformed, but the MN node only stores the information related to the PCell at present and cannot determine the information related to the PSCell, and the information related to the PSCell is stored in the corresponding SN node at present, so that the SN is required to inform the corresponding MN node through an SN response message.

It should be noted here that, if the MN node adopts the second method when sending the SN modification request message, where the SN modification request message carries a changed PCell cell identifier, after receiving the SN modification request message, the SN node can acquire the changed PCell information in the MN, update UE history information according to the carried changed PCell cell identifier, and establish a correspondence between a PCell and a PSCell accessed by the UE in the updated UE history information. At this time, when the SN generates the SN response message to the MN, the SN may select to carry the third UE history information, or may select not to carry the third UE history information. That is, the UE history information maintained in the SN is complete and correct at this time.

If the MN node adopts the first method when sending the SN modification request message, where the SN modification request message carries indication information (the indication information may adopt a flag bit form), and the flag bit indicates that a PCell in the corresponding MN node is transformed, but does not specifically notify a PCell cell identifier where the SN is changed, the SN cannot maintain complete UE history information. At this time, the SN needs to carry the third UE history information when sending the SN response message to the MN. Meanwhile, when the MN node receives the SN response message carrying the third UE historical information, the MN node updates the second UE historical information by combining with the locally stored second UE historical information. Therefore, under the condition that PCell transformation occurs in the MN node, the MN node can completely store UE historical information, and the UE historical information comprises the corresponding relation between the PCell and the PSCell accessed by the UE.

According to the method for processing the historical information of the UE of the terminal equipment, provided by the embodiment of the application, the interaction between the MN node and the SN node is strengthened, and the information transmitted in the interaction can be flexibly processed, so that the corresponding relation between the PCell and the PSCell is complete and correct when the historical information of the UE is updated by the MN or the SN node, the process of processing the PCell switching in the MN node by a network system is more flexible, and the network performance is improved.

On the basis of the foregoing embodiment, optionally, the third UE history information includes a corresponding relationship between the PCell and the PSCell in the SN and corresponding access time of the UE, or includes information of the PSCell in the SN and corresponding access time of the UE.

Specifically, the access time of the UE may be a time when the UE accesses the corresponding PCell or PSCell, or a time period when the UE resides in the corresponding PCell or PSCell. According to the third UE historical information, three possible conditions of SN response messages are obtained:

case A1: and carrying third UE historical information, wherein the third UE historical information is a part of the updated first UE historical information, namely the third UE historical information comprises the information of the PSCells of the main and auxiliary cells in the SN and the corresponding access time of the UE. For example, the first UE history information is (PCell: 1 PSCell. In the case the access time of the UE is omitted.

Case A2: and carrying third UE historical information, wherein the third UE historical information is the same as the first UE historical information, and the third UE historical information comprises the corresponding relation between the PCell and the PSCell of the main and auxiliary cells in the SN and the corresponding access time of the UE. For example, the first UE history information is (PCell: 1 pscell. In the case the access time of the UE is omitted from being displayed.

Case A3: and not carrying third UE history information.

In addition, the first UE history information may also include information such as a cell type of a PCell or a PSCell that is accessed correspondingly, and the corresponding third UE history information may also include information such as a cell type of a PCell or a PSCell that is accessed correspondingly, which is not discussed in detail in the embodiments of the present application.

It can be known from the above three cases that the first UE history information locally stored by the SN node and the third UE history information sent by the SN node to the MN node through the SN response message are relatively independent, and the first UE history information locally stored by the SN node is more comprehensive and has more stored contents, so long as it is ensured that when the MN or the SN node updates the UE history information, the correspondence between the PCell and the PSCell stored by the SN is complete and correct. Therefore, the signaling transmission load between the SN and the MN can be reduced, and the integrity of the UE historical information locally stored by the SN is ensured.

For the case A1, since the third UE history information only includes the information of the PSCell of the primary and secondary cells in the SN and the corresponding access time of the UE, when the MN node receives the SN response message of this case, first the access time of the UE corresponding to the PSCell is compared with the UE history information locally stored in the MN node, and then the corresponding PSCell information is sequentially written in the PCell list of the MN node side according to the precedence order of the access time or whether the access time is equal.

For example: the method comprises the steps that UE historical information locally stored by an MN node is of a list structure, a first column corresponds to PCell cell identification information and corresponds to the access time of the UE, a second column corresponds to PSCell cell identification information and corresponds to the access time of the UE, the MN node writes the received information of a main cell PSCell and an auxiliary cell PSCell in an SN and corresponds to the access time of the UE in a row with the same time according to the time sequence, and a complete corresponding relation between the PCell and the PSCell and a corresponding access time list of the UE are obtained, so that second UE historical information locally stored by the MN node is updated.

For the case A2, since the third UE history information includes the correspondence between the PCell and the PSCell in the SN and the corresponding access time of the UE, when the MN node receives the SN response message of this case, the MN node may integrate to obtain the complete correspondence between the PCell and the PSCell and the corresponding access time list of the UE according to whether the order or time of the corresponding access time of the PCell and the PSCell in the third UE history information is equal, so as to obtain the updated second UE history information locally stored by the MN node. Optionally, at the same time, the SN node clears the previous history information of the first UE, and continues to maintain the history information of the UE related to the PSCell for the current new PCell.

For case A3, the third UE history information is not carried. The MN node can also carry second UE historical information locally stored by the MN node in the SN modification request message, and the SN node updates the first UE historical information locally stored according to the second UE historical information and according to the sequence of the access time or whether the access time is equal or not. And sending an SN response message, wherein the SN response message can not carry third UE historical information at the moment, when the SN node is deleted, the MN sends an SN release message to the corresponding SN, and the SN node sends the locally stored first UE historical information to the corresponding MN node.

Through the three situations, the method for processing the history information of the UE in the terminal device provided in the embodiment of the present application, by enhancing the interaction between the MN node and the SN node, and flexibly processing the information transmitted in the interaction, ensures that the PCell and the PSCell have a complete and correct corresponding relationship when the MN or the SN node updates the history information of the UE, makes the process of the network system processing PCell handover in the MN node more flexible, and improves the network performance.

On the basis of the foregoing embodiment, optionally, before receiving the indication information sent by the secondary node SN, the method further includes: and sending an SN increasing message to the SN, wherein the SN increasing message carries fourth UE historical information, and the fourth UE historical information is a subset of second UE historical information locally stored by the MN, or the SN increasing message does not carry the fourth UE historical information.

The fourth UE historical information comprises the corresponding relation between the PCell and the PSCell in the SN and the corresponding access time of the UE, or only comprises the information of the PCell in the main cell in the MN and the corresponding access time of the UE.

It should be noted that the content types included in the fourth UE history information and the third UE history information are the same, and the specific content may be different. That is, the corresponding relationship between the PCell and the PSCell of the primary and secondary cells in the SN is included, but specifically, the corresponding relationship between which PCell and which PSCell may be different or different; also the access time of the UE may be included, but there may be differences or differences in specific time instants.

Specifically, the access time of the UE may be a time when the UE accesses the corresponding PCell or PSCell, or a time period when the UE resides in the corresponding PCell or PSCell. The fourth UE history information is a subset of the second UE history information stored locally by the MN, i.e., the fourth UE history information may be all or part of the second UE history information.

In addition, the second UE history information may further include information such as a cell type of a PCell or a PSCell that the MN node corresponds to accessing, and the corresponding fourth UE history information may also include information such as a cell type of a PCell or a PSCell that the MN node corresponds to accessing, which is not discussed in detail in the embodiments of the present application.

The second UE historical information locally stored by the MN node and the fourth UE historical information sent to the SN node by the MN node through the SN addition message are relatively independent, the second UE historical information locally stored by the MN node is more comprehensive, the stored content is more, and the condition that the corresponding relation between the PCell and the PSCell is complete and correct when the UE historical information is updated by the MN or the SN node is required to be ensured. Therefore, the signaling transmission load can be reduced by carrying or not carrying the fourth UE historical information through the SN addition message, and meanwhile, the second UE historical information locally stored by the MN node can also ensure the integrity of the information.

On the basis of the foregoing embodiment, optionally, before the sending PCell transformation information to the SN, the method further includes:

receiving a Radio Resource Control (RRC) connection reconfiguration completion message, and determining that the inter-PCell switching in the MN is successful;

the sending PCell transform information to the SN specifically includes:

Specifically, PCell transformation occurs in the MN node, the MN node sends an RRC connection reconfiguration request to UE, new RRC connection is requested to be established with the UE, after a radio resource control RRC connection reconfiguration completion message sent by the UE side is received, the UE is determined to establish the new RRC connection with the new PCell in the MN, normal communication between the UE and the MN node is ensured, at the moment, the MN node sends PCell transformation information occurring in the node to the corresponding SN node, and therefore synchronization of the UE, the MN node and the SN node information is ensured.

According to the method for processing the historical information of the UE of the terminal equipment, when the PCell is changed in the MN node, the RRC connection between the UE and the MN node needs to be reconfigured, the UE is ensured to be connected to a network terminal according to the latest historical information of the UE, and the effectiveness of communication is improved.

On the basis of the foregoing embodiment, optionally, an interface between the MN and the SN is an Xn interface or an X2 interface.

Specifically, according to different dual connectivity modes, the MN node may have three situations: eNB, ng-eNB, or gNB. In the dual-connection mode, when the MN node is an eNB, the corresponding SN node is en-gNB, and an interface between the MN node and the SN node is an X2 interface; when the MN node is the ng-eNB, the corresponding SN node is the gNB, and an interface between the MN node and the SN node is an Xn interface; when the MN node is the gNB, the corresponding SN node is the ng-eNB, and the interface between the MN node and the SN node is the Xn interface.

According to the method for processing the historical information of the UE, the MN node and the SN node can be selected differently under different dual-connection modes, so that the process of processing PCell switching in the MN node by a network system is more flexible, and the network performance is improved.

Fig. 5 is a second flowchart of a processing method for history information of a terminal device UE according to an embodiment of the present application, and as shown in fig. 5, a processing method for history information of a terminal device UE is applied to an auxiliary node SN, and includes:

step 501, sending indication information to a main node MN, wherein the indication information is used for indicating the MN to inform the SN of the change condition of a PCell in a main cell in the MN;

specifically, the initial state of the UE has been accessed to a certain PCell in the MN, and when dual connectivity needs to be established, the primary node MN to which the UE has been connected sends an SN addition message to the secondary node SN, and then the SN node sends an indication message to the primary node MN, where the indication message indicates that the MN switches between cells in the MN node, and actively sends the indication message to the SN.

Step 502, receiving PCell transformation information sent by the MN, and updating locally stored first UE history information based on the PCell transformation information.

Specifically, the SN receives PCell transformation information, and updates first UE history information in combination with first UE history information locally stored before the transformation information is not received.

According to the method for processing the historical information of the terminal equipment UE, the indication information sent by the SN is used, when the MN generates PCell transformation in the node, the corresponding PCell transformation information is actively sent, the interaction between the MN and the SN is strengthened, the PCell transformation information is transmitted, the correct corresponding relation between the PCell and the PSCell is ensured, and the network performance is improved.

On the basis of the foregoing embodiment, optionally, the receiving PCell transformation information sent by the MN includes:

Specifically, after PCell transformation occurs in the MN node, the SN node receives an SN modification request sent by the MN node, and carries PCell transformation information in the message. The PCell transformation information herein can specifically adopt the following two ways:

in the first mode, PCell transformation information adopts a flag bit mode, namely, a message body adopts a flag to inform SN nodes, PCell in a corresponding MN node is transformed, and PCell cell identification is not specifically informed; for example, a bit initial value in the message body is 0, when the bit value is 0, it represents that the PCell in the MN node is not transformed, and when the bit value is 1, it represents that the PCell in the MN node is transformed, and the SN node can determine that the PCell in the corresponding MN node is transformed when receiving the message that the bit is 1.

And secondly, directly informing the changed PCell cell identification by adopting PCell transformation information, wherein at the moment, the corresponding PCell cell identification of the MN at the moment needs to be carried in the SN addition, so that after the SN node receives the SN modification request message, the PCell cell identification carried in the SN addition before and the PCell cell identification in the received SN modification request message are compared to determine that the PCell in the corresponding MN node is transformed.

After receiving the SN modification request message, the SN can acquire PCell transformation information in the MN node, reply the MN node after performing corresponding processing aiming at the message, and send a corresponding SN response message to the MN node.

According to the method for processing the historical information of the terminal equipment UE, the indication information sent by the SN is used, when PCell transformation occurs in the MN node, the corresponding change information is sent actively, interaction between the MN and the SN is strengthened, the PCell transformation information is transmitted, the correct corresponding relation between the PCell and the PSCell is ensured, and the network performance is improved.

On the basis of the foregoing embodiment, optionally, the SN response message carries third UE history information, where the third UE history information is a subset of the updated first UE history information.

On the basis of the foregoing embodiment, optionally, the third UE history information includes a correspondence between the PCell and the primary and secondary cells PSCell in the SN and corresponding access time of the UE, or only includes information of the primary and secondary cells PSCell in the SN and corresponding access time of the UE.

Specifically, the third UE history information is a subset of the first UE history information locally stored after being updated by the SN node, and there may be three types of cases for the SN response message sent by the SN, which are the same as the case A1, the case A2, and the case A3 of the SN response message received by the MN node.

The SN node sends the SN response message as in case A1, case A2, or case A3, and the corresponding processing flow are the same as the processing flow of the processing method of the UE history information applied to the MN node in the embodiment of the present application, and are not described here again.

On the basis of the foregoing embodiment, optionally before the sending the indication information to the main node MN, the method further includes:

receiving a SN increasing message sent by the MN, wherein the SN increasing message carries fourth UE historical information, and the fourth UE historical information is a subset of second UE historical information locally stored by the MN, or the SN increasing message does not carry the fourth UE historical information.

According to the method for processing the historical information of the UE of the terminal equipment, the interaction between the MN node and the SN node is strengthened, the information transmitted in the interaction can be flexibly processed, and the premise guarantee is provided for ensuring the integrity and the correctness of the corresponding relation between the PCell and the PSCell when the historical information of the UE is updated by the MN node or the SN node.

Specifically, according to different modes of dual connectivity, the SN node may have three situations: en-gNB, or ng-eNB. In a dual-connection mode, when an SN node is an en-gNB, the corresponding MN node is an eNB, and an interface between the SN node and the MN node is an X2 interface; when the SN node is the gNB, the corresponding MN node is the ng-eNB, and an interface between the SN node and the MN node is an Xn interface; when the SN node is the ng-eNB, the corresponding MN node is the gNB, and the interface between the SN node and the MN node is the Xn interface.

According to the method for processing the historical information of the terminal equipment UE, the MN node and the SN node can be selected differently under different dual-connection modes, so that the process of processing PCell switching in the MN node by a network system is more flexible, and the network performance is improved.

After the MN is added with the SN node, there are two schemes for the SN to maintain the UE history information: one maintains all UE history information for the SN, including information of the MN and the SN; one maintains only SN related UE history information for the SN. That is, in case of the first scheme, the SN also takes note of whether the PCell has changed, and if so, the change is also recorded. Scheme two, the SN only concerns changes in the PSCell. The following are described separately.

Fig. 6-1 is a flowchart of a method for processing history information of a UE in a terminal device according to an embodiment of the present disclosure, and as shown in fig. 6-1, an SN maintains all UE history information.

And the main node MN sends SN increasing information, and meanwhile, the MN sends locally stored UE historical information to a corresponding SN node. And the SN node updates the UE historical information before the SN node is deleted, wherein the SN node comprises the PCell part and the PSCell part.

Step 0: UE history information (PCell: 0, PSCell: empty) when the UE accesses the PCell cell identity of MN is 0,A.

Step 1: the UE establishes dual connectivity. The MN sends SN addition information to the SN which contains the UE history information of the point A. The MN continues to maintain UE history information for point a.

The SN supports maintaining UE history information related to the SN, and sends indication information to the MN, wherein the indication information is used for informing the MN that the SN needs to be informed after PCell transformation subsequently occurs.

The UE history information of the SN update point B is (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell.

Step 2: the MN takes place the PCell transformation within the node 0- >1. The MN updates the D-point UE history information (PCell: 0, PSCell: empty) - > (PCell: 1, PSCell: empty).

Although the SN has been currently added, the MN cannot determine the specific PSCell information, and only temporarily fills in empty first.

And step 3: the MN sends a modification request message to the SN, and the modification request message informs the PCell of changing from 0 to 1. The SN, upon receiving the modification request message, updates the UE history information of Point C (PCell: 0, PSCell.

That is, in the present application, once PCell in MN node is transformed, MN notifies SNPCell of transformation according to received indication information, so SN can modify the stored UE history information based on PCell transformation, so that the UE history information maintained by SN is complete.

And 4, step 4: and the SN sends an SN response message to the MN, wherein the SN response message carries UE history information currently maintained by the SN. The MN updates locally stored UE history information (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell.

This step is optional. Because the PSCell information may not be determined before the MN node, the PSCell information is always empty when UE history information at each time point is recorded, and after receiving an SN response message sent by an SN, the stored UE history information may be supplemented according to the UE history information carried in the SN response message, so that the supplemented UE history information includes a correspondence between a PCell and a PSCell.

Optionally, the SN response message sent by the SN in step 4 may not carry UE history information, and then the SN node sends the maintained UE history information to the MN when being deleted.

Fig. 6-2 is a second flowchart of the method for processing UE history information of the terminal device according to the embodiment of the present application, and as shown in fig. 6-2, the SN only maintains the UE history information related to the PSCell.

The master node MN sends a SN addition message to the corresponding SN. Meanwhile, the master node MN may send the UE history information to the corresponding SN node as shown in fig. 6-1, or may not send the UE history information to the SN, but send the PCell cell identifier accessed by the UE to the SN. In the present embodiment, the SN node updates the UE history information, and includes only the PSCell portion in the UE history information.

Step 0: UE history information when the UE accesses to the PCell cell identification of MN is 0,A, (PCell: 0, PSCell: null).

Step 1: the UE establishes dual connectivity. The MN sends an SN addition message to the SN. The MN continues to maintain UE history information for point a.

The SN updates the UE history information of the B point to (PSCell: 0).

And 2, step: PCell transformation (0- > 1) occurs within the MN node. The MN updates the D-point UE history information (PCell: 0, PSCell: empty) - > (PCell: 1, PSCell: empty).

And step 3: and the MN sends a modification request message to the SN, and the modification request message informs the PCell of transformation.

The SN continues to maintain PSCell information for UE access.

And 4, step 4: the SN sends an SN response message to the MN, and the SN response message sends the UE history information currently maintained by the SN to the MN.

Meanwhile, the SN can empty the historical information of the UE maintained before, and continuously maintains the historical information related to the PSCell aiming at the current new PCell, and the SN records that the historical information of the UE at the point C is PSCell:0.

And for the MN, updating the E-point UE history information according to the received response message: (PCell: 0, PSCell: empty) - > (PCell: 0, PSCell.

Because the PSCell information may not be determined before the MN node, the PSCell information is always empty when UE history information at each time point is recorded, and after receiving an SN response message sent by an SN, the stored UE history information may be supplemented according to the UE history information carried in the SN response message, so that the supplemented UE history information includes a correspondence between a PCell and a PSCell.

Fig. 7 is a schematic structural diagram of a main node MN according to an embodiment of the present invention, where, as shown in fig. 7, the MN node includes a memory 720, a transceiver 710, and a processor 700; wherein the processor 700 and the memory 720 may also be physically separated.

A memory 720 for storing a computer program; a transceiver 710 for transceiving data under the control of the processor.

In particular, the transceiver 710 is used to receive and transmit data under the control of the processor 700.

Wherein in fig. 7 the bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented by processor 700, and various circuits, represented by memory 720, 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 710 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 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

The processor 700 may be a CPU, ASIC, FPGA or CPLD, and the processor may also employ a multi-core architecture.

The processor 700, by calling the computer program stored in the memory 720, is configured to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions, for example: receiving indication information sent by an auxiliary node (SN), wherein the indication information is used for indicating the MN to inform the SN of the condition that a primary cell (PCell) in the MN is transformed;

Optionally, the sending PCell transform information to the SN includes:

the method further comprises the following steps:

and receiving the SN response message sent by the SN.

Optionally, if the SN response message carries third UE history information, updating second UE history information locally stored by the MN based on the third UE history information; wherein the third UE history information is a subset of the updated first UE history information.

and sending the converted PCell cell identification to the SN.

Optionally, before receiving the indication information sent by the secondary node SN, the step further includes:

sending SN increasing information to the SN; the SN addition message carries fourth UE history information, the fourth UE history information is a subset of second UE history information locally stored by the MN, or the SN addition message does not carry the fourth UE history information.

Optionally, the third UE history information and the fourth UE history information include a correspondence between the PCell and the PSCell in the SN and corresponding access time of the UE, or include information of the PCell in the MN and corresponding access time of the UE.

Optionally, before sending PCell transformation information to the SN, the step further includes: receiving a Radio Resource Control (RRC) connection reconfiguration completion message, and determining that the switching between the PCell in the MN is successful;

the sending PCell transformation information to the SN specifically includes:

and after the inter-PCell switching is successful in the MN, sending PCell transformation information to the SN.

Optionally, an interface between the MN and the SN is an Xn interface or an X2 interface.

Fig. 8 is a schematic structural diagram of a secondary node SN according to an embodiment of the present application, where, as shown in fig. 8, the secondary node SN includes a memory 820, a transceiver 810, and a processor 800; wherein the processor 800 and the memory 820 may also be physically separated.

A memory 820 for storing a computer program; a transceiver 810 for transceiving data under the control of the processor 800.

In particular, transceiver 810 is used to receive and transmit data under the control of processor 800.

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. 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 810 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 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

The processor 800 may be a CPU, ASIC, FPGA or CPLD, and the processor may also employ a multi-core architecture.

The processor 800, by calling the computer program stored in the memory 820, is configured to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions, for example: sending indication information to a main node MN, wherein the indication information is used for indicating the MN to inform the SN of the change condition of a PCell in a main cell in the MN;

Optionally, before sending the indication information to the main node MN, the step further includes:

receiving SN increasing information sent by the MN; the SN adding message carries fourth UE history information, the fourth UE history information is a subset of second UE history information locally stored by the MN, or the SN adding message does not carry the fourth UE history information.

It should be noted that the master node MN and the secondary node SN provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted here.

Fig. 9 is a schematic structural diagram of a processing apparatus for processing history information of a terminal device UE on a master node MN side according to an embodiment of the present application; as shown in fig. 9, the apparatus includes:

a receiving module 901, configured to receive indication information sent by an auxiliary node SN, where the indication information is used to indicate that the MN notifies the SN of a situation that a primary cell PCell in the MN is transformed;

a sending and maintaining module 902, configured to send PCell transformation information to the SN, where the PCell transformation information is used to trigger the SN to update locally stored first UE history information.

Optionally, the sending PCell transform information to the SN includes: sending SN modification request information to the SN, wherein the SN modification request information carries the PCell transformation information; the receiving module 901 is further configured to receive an SN response message sent by the SN.

Optionally, the sending of PCell transformation information to the SN in the sending maintenance module 902 specifically includes:

and sending the converted PCell cell identification to the SN.

Optionally, before receiving the indication information sent by the secondary node SN, the sending maintenance module 902 is further configured to send an SN addition message to the SN; the SN adding message carries fourth UE history information, the fourth UE history information is a subset of second UE history information locally stored by the MN, or the SN adding message does not carry the fourth UE history information.

Optionally, before sending PCell transformation information to the SN, the receiving module 901 is further configured to receive a radio resource control, RRC, connection reconfiguration complete message, and determine that the inter-PCell handover in the MN is successful;

the sending PCell transformation information to the SN specifically includes:

Optionally, the external interfaces of the sending module 901 and the sending maintenance module 902 are Xn interfaces or X2 interfaces.

Fig. 10 is a schematic structural diagram of a device for processing history information of a terminal device UE on an auxiliary node SN side according to an embodiment of the present application, where as shown in fig. 10, the device includes:

an information sending module 110, configured to send indication information to a master node MN, where the indication information is used to indicate that the MN notifies the SN of a situation that a primary cell PCell in the MN is transformed;

a receiving processing module 111, configured to receive PCell transformation information sent by the MN, and update locally stored first UE history information based on the PCell transformation information.

Optionally, the information sending module 110 is further configured to send an SN response message to the MN, where the SN response message is sent after receiving an SN modification request message sent by the MN, and the SN modification request message carries the PCell transformation information.

Optionally, before sending the indication information to the MN, the receiving processing module is further configured to receive an SN increase message sent by the MN; the SN addition message carries fourth UE history information, the fourth UE history information is a subset of second UE history information locally stored by the MN, or the SN addition message does not carry the fourth UE history information.

Optionally, the external interface of the information sending module 110 and the external interface of the receiving processing module 111 are Xn interfaces or X2 interfaces.

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 may be implemented in the form of hardware, or may also be implemented in the 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 application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the method for processing history information of a terminal device UE provided in the foregoing embodiments, and the method is applied to a master node MN, and includes: receiving indication information sent by an auxiliary node (SN), wherein the indication information is used for indicating the MN to inform the SN of the condition that a primary cell (PCell) in the MN is transformed; and sending PCell transformation information to the SN, wherein the PCell transformation information is used for triggering the SN to update the locally stored first UE historical information.

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the method for processing history information of a terminal device UE provided in the foregoing embodiments, and the method is applied to a secondary node SN, and includes: sending indication information to a main node MN, wherein the indication information is used for indicating the MN to inform the SN of the condition that a PCell of a main cell in the MN is transformed; and receiving PCell transformation information sent by the MN, and updating locally stored first UE historical information based on the PCell transformation information.

The processor-readable storage medium may be any available media 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 processing historical information of terminal equipment UE is applied to a main node MN and comprises the following steps:

2. The method for processing the UE history information according to claim 1, wherein the sending PCell transformation information to the SN includes:

the method further comprises the following steps:

and receiving the SN response message sent by the SN.

3. The method for processing the UE history information according to claim 2, further comprising:

if the SN response message carries third UE historical information, updating second UE historical information locally stored by the MN based on the third UE historical information;

4. The method for processing UE history information according to claim 1, wherein the sending PCell transformation information to the SN specifically includes:

and sending the converted PCell cell identification to the SN.

5. The method for processing UE history information according to claim 1, wherein before receiving the indication information sent by the secondary node SN, the method further comprises:

sending SN increasing information to the SN;

the SN addition message carries fourth UE historical information, and the fourth UE historical information is a subset of second UE historical information locally stored by the MN; or,

the SN increasing message does not carry the fourth UE history information.

6. The method for processing UE history information according to claim 3 or 5, wherein the third UE history information and the fourth UE history information include: the corresponding relation between the PCell and the PSCell of the primary and secondary cells in the SN and the corresponding access time of the UE, or the information of the PCell of the primary cell in the MN and the corresponding access time of the UE.

7. The method for processing the UE history information according to any one of claims 1 to 5, wherein before the sending the PCell transformation information to the SN, the method further comprises:

the sending PCell transformation information to the SN specifically includes:

8. A method for processing historical information of terminal equipment (UE) is applied to a Secondary Node (SN), and comprises the following steps:

9. The method for processing UE history information according to claim 8, wherein the receiving PCell transformation information sent by the MN includes:

10. The method of claim 9, wherein the SN response message carries third UE history information, and the third UE history information is a subset of the updated first UE history information.

11. The method for processing UE history information according to claim 8, wherein before sending the indication information to the MN, the method further comprises:

receiving SN increasing information sent by the MN;

the SN addition message does not carry the fourth UE history information.

12. A main node MN device comprises a memory, a transceiver and a processor;

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for executing the computer program in the memory and implementing the steps of:

13. An auxiliary node (SN) device comprises a memory, a transceiver and a processor;

14. An apparatus for processing history information of a terminal device UE, the apparatus comprising:

15. An apparatus for processing history information of a terminal device UE, the apparatus comprising:

16. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the method for processing the history information of the terminal device UE according to any one of claims 1 to 7 or the method for processing the history information of the terminal device UE according to any one of claims 8 to 11.