User equipment switching method, device and storage medium

Abstract

The present invention discloses a user equipment handover method, device, and storage medium, comprising: a user equipment mobility control entity determining a resident protection policy for at least one UE; the user equipment mobility control entity sending a handover indication to a base station, the handover indication indicating the resident protection policy of the UE; and the base station handing over the UE based on the resident protection policy of the UE. The present invention can avoid frequent UE handovers caused by load-based and coverage-based handovers.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular to a user equipment switching method, equipment, and storage medium. Background Art

[0002] In current wireless network load balancing, base stations generally implement automatic handover or reselection of UEs (User Equipment) by adjusting cell-level handover and reselection parameters, or issue handover commands to implement UE migration, selecting appropriate UEs in high-load cells and migrating them to low-load cells.

[0003] The disadvantage of the existing technology is that this load balancing method will cause frequent handovers of UEs. Summary of the Invention

[0004] The present invention provides a user equipment switching method, equipment and storage medium, which are used to solve the problem of frequent switching of UE.

[0005] The present invention provides the following technical solutions:

[0006] A UE handover method, comprising:

[0007] The user equipment mobility control entity determines a residence protection policy for at least one UE;

[0008] The user equipment mobility control entity sends a handover indication to the base station, where the handover indication is used to indicate a residence protection policy of the UE.

[0009] In practice, the resident protection strategy includes:

[0010] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0011] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0012] In practice, the resident protection strategy includes:

[0013] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0014] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0015] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0016] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0017] QCI, 5QI, QFI, slice ID.

[0018] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0019] The number of handovers within the preset time, the service type of the UE, the QCI of the UE, and the 5QI of the UE.

[0020] During implementation, one or a combination of the following instructions is further included:

[0021] Instructing the UE to update the resident protection policy;

[0022] Instructing the UE to cancel the resident protection policy;

[0023] Instruct the UE to feedback the resident protection policy status.

[0024] A UE handover method, comprising:

[0025] The base station receives a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residence protection policy of at least one UE;

[0026] The base station switches the UE according to the resident protection policy of the UE.

[0027] In practice, the resident protection strategy includes:

[0028] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0029] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0030] In practice, the resident protection strategy includes:

[0031] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0032] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0033] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0034] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0035] QCI, 5QI, QFI, slice ID.

[0036] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0037] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0038] In the implementation, the method further includes receiving one or a combination of the following instructions:

[0039] Instructing the UE to update the resident protection policy;

[0040] Instructing the UE to cancel the resident protection policy;

[0041] Instruct the UE to feedback the resident protection policy status.

[0042] The implementation further includes one or a combination of the following methods:

[0043] When the UE's residence protection policy becomes invalid or when the UE leaves the cell according to the residence protection policy, as when migrating out of the cell, the UE's residence protection policy status is fed back to the user mobility control node;

[0044] When the UE's residence protection policy fails and the UE is migrating to a new cell, the failure of the UE's residence protection policy is fed back to the user mobility control node;

[0045] When the UE leaves the cell according to the residency protection policy, as when migrating to the cell, it feeds back to the user mobility control node that the UE has left the original cell.

[0046] A user equipment mobility control entity, comprising:

[0047] The processor reads the program from the memory and performs the following steps:

[0048] determining a resident protection policy for at least one UE;

[0049] Sending a handover indication to a base station, where the handover indication is used to indicate a resident protection policy of the UE;

[0050] A transceiver is used to receive and send data under the control of the processor.

[0051] In practice, the resident protection strategy includes:

[0052] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0053] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0054] In practice, the resident protection strategy includes:

[0055] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0056] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0057] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0058] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0059] QCI, 5QI, QFI, slice ID.

[0060] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0061] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0062] During implementation, one or a combination of the following instructions is further included:

[0063] Instructing the UE to update the resident protection policy;

[0064] Instructing the UE to cancel the resident protection policy;

[0065] Instruct the UE to feedback the resident protection policy status.

[0066] A user equipment mobility control entity, comprising:

[0067] A determination module, configured to determine a resident protection policy for at least one UE;

[0068] The sending module is used to send a switching indication to a base station, where the switching indication is used to indicate a resident protection strategy of the UE.

[0069] In implementation, the determination module is further configured to include in the resident protection strategy:

[0070] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0071] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0072] In implementation, the determination module is further configured to include in the resident protection strategy:

[0073] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0074] In implementation, the determining module is further configured to identify the UE indicated in the user residency protection policy using one of the following identifiers or a combination thereof:

[0075] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0076] In implementation, the determining module is further configured to, when the UE indicated in the user residency protection policy is a group of at least two UEs, identify the UE group using one of the following identifiers or a combination thereof:

[0077] QCI, 5QI, QFI, slice ID.

[0078] In implementation, the determining module is further configured to include a priority of UE migration in the resident protection policy, where the priority is determined according to one or a combination of the following parameters:

[0079] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0080] During implementation, one or a combination of the following instructions is further included:

[0081] Instructing the UE to update the resident protection policy;

[0082] Instructing the UE to cancel the resident protection policy;

[0083] Instruct the UE to feedback the resident protection policy status.

[0084] A base station, comprising:

[0085] The processor reads the program from the memory and performs the following steps:

[0086] receiving a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residence protection policy of at least one UE;

[0087] Switching the UE according to the resident protection policy of the UE;

[0088] A transceiver is used to receive and send data under the control of the processor.

[0089] In practice, the resident protection strategy includes:

[0090] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0091] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0092] In practice, the resident protection strategy includes:

[0093] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0094] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0095] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0096] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0097] QCI, 5QI, QFI, slice ID.

[0098] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0099] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0100] In the implementation, the method further includes receiving one or a combination of the following instructions:

[0101] Instructing the UE to update the resident protection policy;

[0102] Instructing the UE to cancel the resident protection policy;

[0103] Instruct the UE to feedback the resident protection policy status.

[0104] During implementation, the method further includes executing one or a combination of the following methods:

[0105] When the UE's residence protection policy becomes invalid or when the UE leaves the cell according to the residence protection policy, as when migrating out of the cell, the UE's residence protection policy status is fed back to the user mobility control node;

[0106] When the UE's residence protection policy fails and the UE is migrating to a new cell, the failure of the UE's residence protection policy is fed back to the user mobility control node;

[0107] When the UE leaves the cell according to the residency protection policy, as when migrating to the cell, it feeds back to the user mobility control node that the UE has left the original cell.

[0108] A base station, comprising:

[0109] A receiving module, configured to receive a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residency protection policy of at least one UE;

[0110] A switching module is used to switch the UE according to the resident protection policy of the UE.

[0111] In practice, the resident protection strategy includes:

[0112] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0113] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0114] In practice, the resident protection strategy includes:

[0115] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0116] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0117] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0118] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0119] QCI, 5QI, QFI, slice ID.

[0120] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0121] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0122] In the implementation, the method further includes receiving one or a combination of the following instructions:

[0123] Instructing the UE to update the resident protection policy;

[0124] Instructing the UE to cancel the resident protection policy;

[0125] Instruct the UE to feedback the resident protection policy status.

[0126] In the implementation, a feedback module is further included, which is used to perform one or a combination of the following methods:

[0127] When the UE's residence protection policy becomes invalid or when the UE leaves the cell according to the residence protection policy, as when migrating out of the cell, the UE's residence protection policy status is fed back to the user mobility control node;

[0128] When the UE's residence protection policy fails and the UE is migrating to a new cell, the failure of the UE's residence protection policy is fed back to the user mobility control node;

[0129] When the UE leaves the cell according to the residency protection policy, as when migrating to the cell, it feeds back to the user mobility control node that the UE has left the original cell.

[0130] A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the above-mentioned UE switching method.

[0131] The beneficial effects of the present invention are as follows:

[0132] In the technical solution provided by the embodiment of the present invention, since the base station switches the UE according to the resident protection policy sent by the user equipment mobility control entity, frequent UE switching caused by load-based and coverage-based switching can be avoided.

[0133] Furthermore, a protection strategy is provided for UEs to reside in the target cell within a set time period. This user residency protection strategy prevents UEs from repeatedly switching or reselecting based solely on signal coverage strength, thus avoiding frequent user handoffs caused by load and coverage.

[0134] Since the UE resides in the target cell within the set time period when the following parameters meet the threshold requirements: RSRP, RSRQ, SINR, uplink / downlink average rate, that is, when the channel quality of the cell meets the communication requirements of the UE, no handover or reselection is required.

[0135] Since the resident protection strategy includes: the frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again, the priority can be set for the communication cell of the UE, thereby avoiding switching or reselecting when the conditions after switching or reselection are not as good as before switching or reselection.

[0136] The resident protection strategy includes a priority for UE migration, and the priority is determined according to one of the following parameters or a combination thereof: the number of switches within a preset time, the service type of the UE, the QCI of the UE, and the 5QI of the UE. Due to the priority criteria of the above-mentioned users, the priority of UE migration can be determined based on the number of switches of the user within a period of time. For example, the higher the number of switches, the lower the priority of migration. The priority of UE migration can also be determined based on the service type or QCI or QI of the user. For example, the priority of re-migration of delay-sensitive services is lower than that of download services. Therefore, the UE service can be better maintained by avoiding frequent switching or reselection. BRIEF DESCRIPTION OF THE DRAWINGS

[0137] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0138] Figure 1 Schematic diagram of the implementation flow of the UE handover method on the user equipment mobility control entity side in an embodiment of the present invention;

[0139] Figure 2 Schematic diagram of the implementation flow of the UE handover method on the base station side in an embodiment of the present invention;

[0140] Figure 3 Schematic diagram of the process of issuing / updating a user residency protection policy in an embodiment of the present invention;

[0141] Figure 4 Schematic diagram of the process of canceling the user resident protection policy in an embodiment of the present invention;

[0142] Figure 5 Schematic diagram of the user resident protection policy status feedback process in an embodiment of the present invention;

[0143] Figure 6 This is a schematic diagram of the connection of O-RAN architecture wireless network functions in an embodiment of the present invention;

[0144] Figure 7 Schematic diagram of the handover implementation process under the O-RAN architecture in an embodiment of the present invention;

[0145] Figure 8 Schematic diagram of the structure of a user equipment mobility control entity in an embodiment of the present invention;

[0146] Figure 9 Schematic diagram of the base station structure in an embodiment of the present invention. DETAILED DESCRIPTION

[0147] During the course of the invention, the inventors noticed that:

[0148] In existing solutions, after a UE switches or reselects to another cell, it's difficult to guarantee that the UE won't switch or reselect back again based on signal coverage strength. This results in high-load cells failing to achieve load balancing, and the load balancing algorithm may trigger another UE switch, leading to frequent load- and coverage-based handovers.

[0149] Based on this, an embodiment of the present invention proposes a base station UE control solution that can avoid frequent UE handoffs caused by load and coverage-based factors. This solution can also be used in 4G / 5G spectrum sharing scenarios and energy-saving scenarios, where spectrum sharing or energy saving is enabled due to dynamic load changes in the 4G / 5G system, and UE handoff scenarios.

[0150] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0151] During the description, the implementation of the user equipment mobility control entity and the base station will be explained separately, and then an example of the coordinated implementation of the two will be given to better understand the implementation of the solution provided in the embodiments of the present invention. This description does not mean that the two must be implemented in coordination or separately. In fact, when the user equipment mobility control entity and the base station are implemented separately, they can also solve the problems of the user equipment mobility control entity and the base station respectively. When the two are used in combination, better technical effects can be achieved.

[0152] The technical solutions provided by the embodiments of the present invention primarily restrict the behavior of UE handovers due to load balancing, thereby preventing UE ping-pong handovers caused by load and coverage. In the industry, UEs are also referred to as users. For example, UE handover is referred to as user handover, and UE groups are referred to as user groups. Therefore, the term "user" may also appear in the embodiments, but the two have the same meaning.

[0153] Figure 1 A flow chart of a UE handover method implemented on the user equipment mobility control entity side is provided, as shown in the figure, which may include:

[0154] Step 101: A user equipment mobility control entity determines a residency protection policy for at least one UE.

[0155] Step 102: The user equipment mobility control entity sends a handover indication to the base station, where the handover indication is used to indicate a residence protection policy of the UE.

[0156] Figure 2 A flowchart of a UE handover method implementation on a base station side is provided, as shown in the figure, which may include:

[0157] Step 201: A base station receives a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residence protection policy of at least one UE.

[0158] Step 202: The base station migrates the UE according to the resident protection policy of the UE.

[0159] In practice, the resident protection strategy includes:

[0160] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0161] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0162] In practice, the resident protection strategy includes:

[0163] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0164] Specifically, the solution considers introducing signaling for a user residency protection strategy when users switch. The signaling will declare the user or a group of users to be protected, the ID (identifier) ​​of the target cell, the tolerable RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), SINR (Signal to Interference plus Noise Ratio), or the minimum uplink / downlink average rate thresholds after the user resides in the target cell, the validity period of the protection strategy, and may also include the frequency priority of the user when the user migrates again, the user's priority criteria, etc.

[0165] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0166] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0167] Specifically, the user declared in the signaling can be identified by the user's ID on the radio access network side, which can be the UE's C-RNTI (Cell-Radio Network Temporary Identifier) ​​or RAN (Radio Access Network) UE ID or Source NG-RAN node UE XnAP ID (Source next generation radio access network node user equipment Xn interface identifier; NG: Next Generation; RAN: Radio Access Network) or AMF (Access and Mobility Management Function) UE NGAP (NG Application Protocol) ID or RAN UENGAP ID.

[0168] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0169] QCI, 5QI, QFI, slice ID.

[0170] Specifically, the above-mentioned user group can be identified by QCI (QoS Class Indicator, QoS level indication; QoS: Quality of Service) or 5QI (5G QoS Identifier, 5G QoS Identifier) ​​or QFI (QoS flow ID, QoSFlow ID) or slice ID (slice identifier). When using this type of ID, the target base station determines the specific user who needs to execute the resident signaling based on this ID.

[0171] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0172] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0173] Specifically, the priority criteria of the above-mentioned users can be determined based on the number of switches of the user within a period of time. For example, the more times a user switches, the lower the priority of migration. It can also be determined based on the user's service type or QCI or QI (QoS Identifier). For example, the priority of re-migration of delay-sensitive services is lower than that of download services.

[0174] During implementation, one or a combination of the following instructions may be further included:

[0175] Instructing the UE to update the resident protection policy;

[0176] Instructing the UE to cancel the resident protection policy;

[0177] Instruct the UE to feedback the resident protection policy status.

[0178] Specifically, the interaction may also include:

[0179] UE residency protection policy is issued;

[0180] UE residency protection policy update;

[0181] UE residency protection policy is canceled;

[0182] UE residency protection policy status feedback.

[0183] For the base station side, one of the following methods or a combination thereof may be further included:

[0184] When the user's residence protection policy becomes invalid or when the user leaves the cell according to the residence protection policy, the user's residence protection policy status is fed back to the user mobility control node as a migration out of the cell;

[0185] When the user's residence protection policy fails, as the user moves into the cell, the user mobility control node is fed back the failure of the user's residence protection policy;

[0186] When a user leaves a cell according to the residency protection policy, as when migrating into a cell, feedback is given to the user mobility control node indicating that the user has left the original cell.

[0187] Specifically, when the user residence protection policy becomes invalid or the user does not meet the residence conditions in the residence protection policy and leaves the target cell, the target cell can feedback the user residence protection policy status information to the user mobility control node;

[0188] If the user residence protection policy fails, the target cell to which the user has migrated may feed back information on the failure of the user residence protection policy to the user equipment mobility control entity;

[0189] If the user does not meet the residency conditions in the residency protection policy, the target cell to which the user has migrated may feedback to the user equipment mobility control entity that the UE has left the target cell;

[0190] Figure 3 Schematic diagram of the process of issuing / updating user resident protection policies, Figure 4 Schematic diagram of the process of canceling the user resident protection policy. Figure 5The following is a schematic diagram of the user resident protection policy status feedback process, which is generally described in conjunction with the accompanying drawings.

[0191] 1. The user equipment mobility control entity sends a handover indication to the target cell, indicating the user residence protection policy. This signaling will declare the user or group of users to be protected, the RSRP, RSRQ, SINR, or minimum uplink / downlink average rate thresholds that the user can tolerate in the cell after migration, the validity period of the protection policy, and may also include the user's frequency priority and user priority criteria when the user migrates again.

[0192] 2. The target cell receives the user residency protection policy and returns a response message to the user mobility control node. The message carries the ID of the user or user group in the target cell or the UE ID on the interface that transmits the policy. The target base station calculates the user handover measurement / reselection parameters and confirms whether the user residency is achieved. If so, it returns a confirmation that the residency protection policy has been successfully accepted and executes the relevant user residency according to the received policy. Otherwise, it returns a response that the residency protection policy has failed to be received. Figure 3 shown.

[0193] 3. The user equipment mobility control entity may also update the user residence protection policy according to the ID of the user or user group in the target cell returned in step 2; Figure 3 shown.

[0194] 4. The user mobility control node can cancel the user residence protection policy based on the ID of the user or user group in the target cell fed back in 2; Figure 4 shown.

[0195] 5. When the user residency protection policy becomes invalid or the user does not meet the residency conditions in the residency protection policy and leaves the target cell, the target cell can feedback the user residency protection policy status information to the user mobility control node; Figure 5 shown.

[0196] If the user residence protection policy fails, the target cell to which the user has migrated may feed back information on the failure of the user residence protection policy to the user equipment mobility control entity;

[0197] If the user does not meet the residency condition in the residency protection policy, the target cell to which the user has migrated may feedback to the user equipment mobility control entity that the UE has left the target cell.

[0198] The following is a specific example.

[0199] Example 1:

[0200] This embodiment considers adding a user resident protection strategy process and information interaction to the load balancing solution process between multiple cells based on the O-RAN (Open RAN) architecture to ensure the load balancing effect and reduce the frequent switching and reselection of users. Figure 6 This is a connection diagram of the wireless network functions of the O-RAN architecture. Figure 7 The handover implementation process under the O-RAN architecture is shown in the figure, which can be as follows:

[0201] Step 701: The wireless intelligent controller (Near-RT RIC) subscribes to base station load, user measurement, user context and other related data from the base station;

[0202] Step 702: After the base station performs user measurement, the base station reports the data in step 701 to the wireless intelligent controller;

[0203] Step 703: The wireless intelligent controller executes a load balancing optimization intelligent application based on the reported data, determines the target cell for the user who needs to be handed over, and generates a user residence protection policy;

[0204] In step 704, the wireless intelligent controller sends the user identifier and target cell of the user to be handed over, as described in step 703, to the source cell where the user is located. The wireless intelligent controller also sends the UE resident protection policy and the source cell identifier of the UE to the target cell to which the user is being handed over, as well as the ID information of the source cell. The resident protection policy includes: the user or group of users to be resident protected, the ID of the target cell, the tolerable RSRP, RSRQ, SINR, or minimum uplink / downlink average rate thresholds after the user resides in the target cell, and the validity period of the protection policy. Optionally, it may also include the user's frequency priority and user priority criteria when the user relocates.

[0205] The priority criteria for the above-mentioned users can be determined based on the number of switches the user has within a period of time. For example, the more times a user switches, the lower the priority of migration. It can also be determined based on the user's service type or QCI or 5QI. For example, the priority of re-migration for delay-sensitive services is lower than that for download services.

[0206] The user declared in the signaling can be identified by the user's ID on the radio access network side, which can be the UE's C-RNTI or RAN UE ID or Source NG-RAN node UE XnAP ID or AMF UE NGAP ID or RAN UE NGAPID.

[0207] The above user group can be identified by QCI, 5QI, QFI or slice ID. When such ID is used, the target base station determines the specific user who needs to execute the resident signaling based on the ID.

[0208] The wireless intelligent controller can also send the measurement and reselection configuration of the target UE and instruct its handover request to send a near-RT RIC decision.

[0209] This solution can also be used in 4G / 5G spectrum sharing scenarios and energy-saving scenarios. When spectrum sharing or energy saving is enabled due to dynamic load changes in the 4G / 5G system, users switch scenarios.

[0210] Example 2:

[0211] This embodiment considers the existing 3GPP 5G architecture. In scenarios based on load balancing, 4G / 5G spectrum sharing, and energy saving, when a user handover occurs, the handover decision cell (source cell) interacts with the handover target cell to implement user residency protection strategies. This ensures that after the user handover, the requirements and effects of different scenarios such as load balancing, 4G / 5G spectrum coordination, and base station energy saving can be achieved, thereby reducing the frequent handover and reselection of users. The specific solution is as follows:

[0212] 1. The handover decision cell (handover source cell) determines the target cell for users who need to perform handover based on the signal measurement results reported by users and the load information of the interaction between base stations, and generates a user residence protection strategy;

[0213] 2. The handover decision cell (the source cell) provides the UE's resident protection policy, the source cell ID of the UE, and other information to the target cell to which the user is handing over. The resident protection policy includes the user or group of users to be protected, the target cell ID, the tolerable RSRP, RSRQ, SINR, or minimum uplink / downlink average rate thresholds after the user resides in the target cell, and the validity period of the protection policy. Optionally, it also includes the user's frequency priority and user priority criteria when the user relocates.

[0214] The priority criteria for the above-mentioned users can be determined based on the number of switches the user has within a period of time. For example, the more times a user switches, the lower the priority of migration. It can also be determined based on the user's service type or QCI / 5QI. For example, the priority of re-migration for delay-sensitive services is lower than that for download services.

[0215] The user declared in the signaling can be identified by the user's ID on the radio access network side, which can be the UE's C-RNTI or RAN UE ID or Source NG-RAN node UE XnAP ID or AMF UE NGAP ID or RAN UE NGAPID.

[0216] The above user group can be identified by QCI, 5QI, QFI or slice ID. When such ID is used, the target base station determines the specific user who needs to execute the resident signaling based on the ID.

[0217] Based on the same inventive concept, an embodiment of the present invention also provides a user equipment mobility control entity, a base station and a computer storage medium. Since the principles of solving problems by these devices are similar to those of the UE switching method, the implementation of these devices can refer to the implementation of the method, and the repeated parts will not be repeated.

[0218] When implementing the technical solution provided by the embodiment of the present invention, it can be implemented as follows.

[0219] Figure 8 This is a schematic diagram of the structure of a user equipment mobility control entity. As shown in the figure, the user equipment mobility control entity includes:

[0220] The processor 800 is configured to read the program in the memory 820 and execute the following process:

[0221] determining a resident protection policy for at least one UE;

[0222] Sending a handover indication to a base station, where the handover indication is used to indicate a resident protection policy of the UE;

[0223] The transceiver 810 is configured to receive and send data under the control of the processor 800 .

[0224] In practice, the resident protection strategy includes:

[0225] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0226] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0227] In practice, the resident protection strategy includes:

[0228] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0229] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0230] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0231] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0232] QCI, 5QI, QFI, slice ID.

[0233] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0234] The number of handovers within the preset time, the service type of the UE, the QCI of the UE, and the 5QI of the UE.

[0235] During implementation, one or a combination of the following instructions is further included:

[0236] Instructing the UE to update the resident protection policy;

[0237] Instructing the UE to cancel the resident protection policy;

[0238] Instruct the UE to feedback the resident protection policy status.

[0239] Among them, Figure 8 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of 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 peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 810 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. 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 when performing operations.

[0240] An embodiment of the present invention further provides a user equipment mobility control entity, including:

[0241] A determination module, configured to determine a resident protection policy for at least one UE;

[0242] The sending module is used to send a switching indication to a base station, where the switching indication is used to indicate a resident protection strategy of the UE.

[0243] In implementation, the determination module is further configured to include in the resident protection strategy:

[0244] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0245] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0246] In implementation, the determination module is further configured to include in the resident protection strategy:

[0247] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0248] In implementation, the determining module is further configured to identify the UE indicated in the user residency protection policy using one of the following identifiers or a combination thereof:

[0249] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0250] In implementation, the determining module is further configured to, when the UE indicated in the user residency protection policy is a group of at least two UEs, identify the UE group using one of the following identifiers or a combination thereof:

[0251] QCI, 5QI, QFI, slice ID.

[0252] In implementation, the determining module is further configured to include a priority of UE migration in the resident protection policy, where the priority is determined according to one or a combination of the following parameters:

[0253] The number of handovers within the preset time, the service type of the UE, the QCI of the UE, and the 5QI of the UE.

[0254] During implementation, one or a combination of the following instructions is further included:

[0255] Instructing the UE to update the resident protection policy;

[0256] Instructing the UE to cancel the resident protection policy;

[0257] Instruct the UE to feedback the resident protection policy status.

[0258] For the convenience of description, the various parts of the above-mentioned device are divided into various modules or units according to their functions and described separately. Of course, when implementing the present invention, the functions of each module or unit can be realized in the same or multiple software or hardware.

[0259] Figure 9The following is a schematic diagram of the base station structure. As shown in the figure, the base station includes:

[0260] The processor 900 is configured to read the program in the memory 920 and execute the following process:

[0261] receiving a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residence protection policy of at least one UE;

[0262] Switching the UE according to the resident protection policy of the UE;

[0263] The transceiver 910 is configured to receive and send data under the control of the processor 900 .

[0264] In practice, the resident protection strategy includes:

[0265] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0266] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0267] In practice, the resident protection strategy includes:

[0268] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0269] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0270] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0271] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0272] QCI, 5QI, QFI, slice ID.

[0273] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0274] The number of handovers within the preset time, the service type of the UE, the QCI of the UE, and the 5QI of the UE.

[0275] In the implementation, the method further includes receiving one or a combination of the following instructions:

[0276] Instructing the UE to update the resident protection policy;

[0277] Instructing the UE to cancel the resident protection policy;

[0278] Instruct the UE to feedback the resident protection policy status.

[0279] During implementation, the method further includes executing one or a combination of the following methods:

[0280] When the UE's residence protection policy becomes invalid or when the UE leaves the cell according to the residence protection policy, as when migrating out of the cell, the UE's residence protection policy status is fed back to the user mobility control node;

[0281] When the UE's residence protection policy fails and the UE is migrating to a new cell, the failure of the UE's residence protection policy is fed back to the user mobility control node;

[0282] When the UE leaves the cell according to the residency protection policy, as when migrating to the cell, it feeds back to the user mobility control node that the UE has left the original cell.

[0283] Among them, Figure 9 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 900 and memory represented by memory 920. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 910 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 when performing operations.

[0284] An embodiment of the present invention further provides a base station, including:

[0285] A receiving module, configured to receive a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residency protection policy of at least one UE;

[0286] A switching module is used to switch the UE according to the resident protection policy of the UE.

[0287] In practice, the resident protection strategy includes:

[0288] The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements:

[0289] RSRP, RSRQ, SINR, and average uplink / downlink rates.

[0290] In practice, the resident protection strategy includes:

[0291] The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again.

[0292] In implementation, the UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof:

[0293] UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RANUE NGAP ID.

[0294] In implementation, when the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one or a combination of the following identifiers:

[0295] QCI, 5QI, QFI, slice ID.

[0296] In implementation, the residency protection policy includes a priority for UE migration, where the priority is determined based on one or a combination of the following parameters:

[0297] Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

[0298] In the implementation, the method further includes receiving one or a combination of the following instructions:

[0299] Instructing the UE to update the resident protection policy;

[0300] Instructing the UE to cancel the resident protection policy;

[0301] Instruct the UE to feedback the resident protection policy status.

[0302] In the implementation, a feedback module is further included, which is used to perform one or a combination of the following methods:

[0303] When the UE's residence protection policy becomes invalid or when the UE leaves the cell according to the residence protection policy, as when migrating out of the cell, the UE's residence protection policy status is fed back to the user mobility control node;

[0304] When the UE's residence protection policy fails and the UE is migrating to a new cell, the failure of the UE's residence protection policy is fed back to the user mobility control node;

[0305] When the UE leaves the cell according to the residency protection policy, as when migrating to the cell, it feeds back to the user mobility control node that the UE has left the original cell.

[0306] For the convenience of description, the various parts of the above-mentioned device are divided into various modules or units according to their functions and described separately. Of course, when implementing the present invention, the functions of each module or unit can be realized in the same or multiple software or hardware.

[0307] A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the above-mentioned UE switching method.

[0308] For specific implementation, please refer to the implementation of the UE handover method on the user equipment mobility control entity side and / or the base station side.

[0309] In summary, the embodiments of the present invention provide:

[0310] A user retention protection policy is introduced for user handover. The user equipment mobility control entity sends a handover indication to the target cell, specifying the user or group of users to be protected, the ID of the target cell, the tolerable RSRP and / or RSRQ and / or SINR and / or minimum uplink / downlink average rate thresholds after the user camps on the target cell, and the validity period of the protection policy.

[0311] The resident protection strategy may also include the frequency priority of the user when the user migrates again, the user priority criteria, etc.

[0312] The user declared in the user residency protection policy can be identified by the user's ID on the radio access network side, which can be the UE's C-RNTI or RAN UE ID or Source NG-RAN node UE XnAP ID or AMF UE NGAP ID or RANUE NGAP ID.

[0313] The user group can be identified by QCI, 5QI, QFI or slice ID. When such ID is used, the target base station determines the specific user who needs to execute the resident signaling based on the ID.

[0314] The user's priority criterion can be determined based on the number of switches the user has within a period of time. For example, the more times a user switches, the lower the priority of migration. It can also be determined based on the user's service type or QCI / 5QI. For example, the priority of re-migration for delay-sensitive services is lower than that for download services.

[0315] The interaction includes: 1) user resident protection policy issuance process; 2) user resident protection policy update process; 3) user resident protection policy cancellation process; 4) user resident protection policy status feedback process.

[0316] When the user residence protection policy becomes invalid or the user does not meet the residence conditions in the residence protection policy and leaves the target cell, the target cell can feedback the user residence protection policy status information to the user mobility control node;

[0317] If the user residence protection policy fails, the target cell to which the user has migrated may feed back information on the failure of the user residence protection policy to the user equipment mobility control entity;

[0318] If the user does not meet the residency conditions in the residency protection policy, the target cell to which the user has migrated may feedback to the user equipment mobility control entity that the UE has left the target cell;

[0319] Compared with existing solutions, this solution can avoid frequent user switching caused by load-based and coverage-based switching through user residence protection strategies.

[0320] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0321] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0322] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0323] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0324] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A user equipment (UE) handover method, characterized in that: include: A user equipment mobility control entity determines a residency protection policy for at least one UE, wherein the user equipment mobility control entity is a wireless intelligent controller; The user equipment mobility control entity sends a handover indication to the base station, where the handover indication is used to indicate a residence protection policy of the UE; The resident protection strategy includes: The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements: Reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, or uplink / downlink average rate; or, The resident protection strategy includes: The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again; or The residency protection policy includes a priority for UE migration, where the priority is determined according to one or a combination of the following parameters: Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

2. The method according to claim 1, wherein The UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof: UE's cell radio network temporary identifier C-RNTI, radio access network user equipment identifier RAN UE ID, source next-generation radio access network node user equipment Xn interface identifier Source NG-RAN node UE XnAP ID, access and mobility management function user equipment next-generation application protocol identifier AMF UE NGAP ID, radio access network user equipment next-generation application protocol identifier RAN UE NGAP ID.

3. The method according to claim 1, wherein When the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one of the following identifiers or a combination thereof: Service quality level indication QCI, 5G service quality identifier 5QI, service quality flow identifier QFI, slice identifier sliceID.

4. The method according to claim 1, wherein Further include one or a combination of the following instructions: Instructing the UE to update the resident protection policy; Instructing the UE to cancel the resident protection policy; Instruct the UE to feedback the resident protection policy status.

5. A UE handover method, characterized in that: include: The base station receives a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residence protection policy of at least one UE, and the user equipment mobility control entity is a wireless intelligent controller; The base station switches the UE according to the resident protection policy of the UE; The resident protection strategy includes: The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements: Reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, or uplink / downlink average rate; or, The resident protection strategy includes: The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again; or The residency protection policy includes a priority for UE migration, where the priority is determined according to one or a combination of the following parameters: The number of handovers within the preset time, the service type of the UE, the QCI of the UE, and the 5QI of the UE.

6. The method according to claim 5, wherein The UE indicated in the user residency protection policy is identified by one of the following identifiers or a combination thereof: UE's C-RNTI, RAN UE ID, Source NG-RAN node UE XnAP ID, AMF UE NGAP ID, and RAN UENGAP ID.

7. The method according to claim 5, wherein When the UE indicated in the user residency protection policy is a group of at least two UEs, the UE group is identified by one of the following identifiers or a combination thereof: QCI, 5QI, QFI, slice ID.

8. The method according to claim 5, wherein Further comprising receiving one or a combination of the following indications: Instructing the UE to update the resident protection policy; Instructing the UE to cancel the resident protection policy; Instruct the UE to feedback the resident protection policy status.

9. The method according to claim 5, wherein Further including one or a combination of the following methods: When the UE's residence protection policy becomes invalid or when the UE leaves the cell according to the residence protection policy, as when migrating out of the cell, the UE's residence protection policy status is fed back to the user mobility control node; When the UE's residence protection policy fails and the UE is migrating to a new cell, the failure of the UE's residence protection policy is fed back to the user mobility control node; When the UE leaves the cell according to the residency protection policy, as when migrating to the cell, it feeds back to the user mobility control node that the UE has left the original cell.

10. A user equipment mobility control entity, characterized in that: include: The processor reads the program from the memory and performs the following steps: Determining a residency protection policy for at least one UE, wherein the user equipment mobility control entity is a wireless intelligent controller; Sending a handover indication to a base station, where the handover indication is used to indicate a resident protection policy of the UE; a transceiver for receiving and sending data under the control of the processor; The resident protection strategy includes: The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements: Reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, or uplink / downlink average rate; or, The resident protection strategy includes: The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again; or The residency protection policy includes a priority for UE migration, where the priority is determined according to one or a combination of the following parameters: Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

11. A user equipment mobility control entity, characterized in that: include: A determination module, configured to determine a resident protection policy for at least one UE, wherein the user equipment mobility control entity is a wireless intelligent controller; a sending module, configured to send a handover indication to a base station, wherein the handover indication is used to indicate a resident protection policy of the UE; The resident protection strategy includes: The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements: Reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, or uplink / downlink average rate; or, The resident protection strategy includes: The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again; or The residency protection policy includes a priority for UE migration, where the priority is determined according to one or a combination of the following parameters: Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

12. A base station, characterized in that: include: The processor reads the program from the memory and performs the following steps: receiving a handover indication sent by a user equipment mobility control entity, where the handover indication is used to indicate a residency protection policy of at least one UE, where the user equipment mobility control entity is a wireless intelligent controller; Switching the UE according to the resident protection policy of the UE; a transceiver for receiving and sending data under the control of the processor; The resident protection strategy includes: The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements: Reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, or uplink / downlink average rate; or, The resident protection strategy includes: The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again; or The residency protection policy includes a priority for UE migration, where the priority is determined according to one or a combination of the following parameters: Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

13. A base station, characterized in that: include: a receiving module, configured to receive a handover indication sent by a user equipment mobility control entity, wherein the handover indication is used to indicate a resident protection policy of at least one UE, and the user equipment mobility control entity is a wireless intelligent controller; A switching module, configured to switch the UE according to a resident protection policy of the UE; The resident protection strategy includes: The UE resides in the target cell within a set time period when the following parameters meet the threshold requirements: Reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, or uplink / downlink average rate; or, The resident protection strategy includes: The frequency priority of the UE and / or the priority criterion of the UE when the UE migrates again; or The residency protection policy includes a priority for UE migration, where the priority is determined according to one or a combination of the following parameters: Number of handovers within a preset time, UE service type, UE QCI, and UE 5QI.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program for executing the method according to any one of claims 1 to 9.

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