WO2018153115A1

WO2018153115A1 - Mobility management method for user equipment, user equipment, and measurement control point base station

Info

Publication number: WO2018153115A1
Application number: PCT/CN2017/106857
Authority: WO
Inventors: 杨阳; 晋英豪; 谭巍
Original assignee: 华为技术有限公司
Priority date: 2017-02-23
Filing date: 2017-10-19
Publication date: 2018-08-30
Also published as: CN108471617B; CN108471617A

Abstract

Disclosed in the embodiments of the present application is a mobility management method for user equipment. A measurement control point base station sends a first measurement request to one or more measurement base stations, the measurement request being used for instructing to measure the uplink tracking signal (TS) of user equipment; the measurement control point base station determines, according to a self-generated measurement result and/or the measurement result(s) returned by the measurement base station(s), a potential target cell of the user equipment, the measurement results being generated on the basis of the uplink tracking signal sent by the user equipment. Disclosed in the embodiments of the present application are user equipment and a measurement control point base station. The use of the embodiments of the present application can reduce delay and signaling overheads.

Description

User equipment mobility management method, user equipment, and measurement control point base station

Technical field

The present application relates to the field of communications, and in particular, to a mobility management method for a user equipment, a user equipment, and a measurement control point base station.

Background technique

In the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) technology, User Equipment (UE) has two layers in the Radio Resource Control (INACTIVE, RRC) protocol layer. The state is a Radio Resource Control_IDLE (RRC_IDLE) state and a Radio Resource Control_CONNECTED (RRC_CONNECTED) state. When the user equipment initiates a frequent packet service, the UE transitions from the RRC_IDLE state to the RRC_CONNECTED state, which causes a large amount of signaling overhead. When the user equipment is in the RRC_CONNECTED state, it is necessary to continuously perform measurement and report various types of information to the network, resulting in a problem of large energy consumption.

In order to reduce signaling overhead, reduce energy consumption, and reduce delay, the RRC protocol is in the current 3rd Generation Partnership Project (3GPP) 5th Generation Mobile Communication Technology (5G). The layer introduces a new state: Radio Resource Control Idle State (Radio Resource Control_INACTIVE, RRC_INACTIVE).

The UE in the RRC_INACTIVE state may not notify the network when moving in the RAN Based Area (RNA), and needs to notify the network when moving to other RNAs. The RNA may include one or more cells, and these cells may not be the same. Under a base station. How to manage the mobility of UEs in the RRC_INACTIVE state is an issue under discussion. At present, some of the schemes under discussion propose schemes based on downlink signal measurement. However, these schemes have problems in that the delay is large and it is difficult to meet the requirements of 5G, and the problem of signaling overhead is large.

Summary of the invention

The embodiment of the present application provides a mobility management method for a user equipment, a user equipment, and a measurement control point base station, which are used to improve the problem that the existing UE mobility management solution has a large delay and a large signaling overhead.

In a first aspect, the embodiment of the present application provides a mobility management method for a user equipment, including: a measurement control point base station first sends a measurement request to one or more measurement base stations, where the measurement request is used to indicate an uplink TS to the UE. Make measurements. The measurement base station refers to a base station to which the measurement cell of the TS of the UE belongs, and then determines a potential target cell of the UE according to the measurement result generated by itself and/or the measurement result returned by the measurement base station, and the measurement result is Generated based on the uplink TS sent by the UE. During this process, the network side does not need to perform frequent signaling interaction with the UE, thereby saving air interface resources. Since the network side can know the location of the UE in time, when there is a downlink service arrival or a state change, the network side can quickly establish a connection with the UE to avoid additional delay.

In a possible design, the measurement control point base station is a base station to which the camping cell of the UE belongs, or a base station to which the anchor cell of the UE belongs.

In a possible design, the first measurement request carries measurement control point indication information, and the measurement control point The indication information is used to indicate that the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, or a base station to which the camping cell of the user equipment belongs.

In another possible design, after the determining a potential target cell of the user equipment, the measurement control point base station sends a second measurement request to the base station to which the potential target cell belongs, where the second measurement request carries the Measurement control point indication information.

In another possible design, the first measurement request and the second measurement request further carry at least one of a measurement duration, a signal quality threshold, and measurement control information, where the measurement control information includes the At least one of a terminal identifier, a measurement period, a measurement reporting condition, and a tracking signal of the user equipment.

In another possible design, the potential target cell is located in the same RNA as the camping cell, and after the sending the second measurement request, the measurement control point base station receives the base station to which the potential target cell belongs. The measurement result that is sent by the potential target cell is that the base station to which the potential target cell belongs is generated based on the uplink tracking signal sent by the user equipment received in the potential target cell; the measurement control point base station according to the The measurement result sent by the base station to which the potential target cell belongs is determined whether the user equipment needs to change the camping cell.

In another possible design, the measurement control point base station is a base station to which the camping cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is the user equipment. The base station to which the camping cell belongs.

In another possible design, when the user equipment needs to change the camping cell, the measurement control point base station sends a first camping cell change indication to the base station to which the potential target cell belongs, the first station The staying cell change indication is used to notify the camping cell of the user equipment after the potential target cell is used as the camping cell.

The measurement control point base station notifies the camped cell of the base station UE to which the potential target cell belongs to be changed to the potential target cell by using the first camped cell change indication.

In another possible design, the first camping cell change indication carries at least one of an identifier of the potential target cell, paging information, a cell list of the RNA, and measurement information, the measurement The information includes at least one of a measurement cell identifier, a measurement duration, a measurement threshold, and an information reporting condition.

The base station to which the potential target cell belongs is the new measurement control point base station of the UE after the camping cell change is completed, and controls the measurement result of the UE according to the information carried in the first camped cell change indication.

In another possible design, when the user equipment needs to change the camping cell, the measurement control point base station sends a second camping cell change indication to the measurement base station, where the second camping cell change indication And a camping cell for notifying the user equipment after the potential target cell is used as a change camp cell.

The measurement control point base station notifies the measurement of the camping cell of the base station UE to the potential target cell by the second camping cell change indication.

In another possible design, the second camping cell change indication carries an identifier of the potential target cell.

In another possible design, the measurement control point base station is also a base station to which the anchor cell of the user equipment belongs.

In another possible design, the measurement control point base station is not the base station to which the anchor cell of the user equipment belongs.

In another possible design, when the user equipment needs to change a camping cell, the measurement control point base station And sending, by the base station to which the anchor cell of the user equipment belongs, a third camping cell change indication, where the third camping cell change indication is used to notify the user equipment that the potential target cell is used as a changed camping cell Resident cell.

The measurement control point base station notifies the camping cell of the base station UE to which the anchor cell belongs to the potential target cell by using the third camping cell change indication, so that the base station to which the anchor cell belongs can timely know the update status of the currently camped cell of the UE.

In another possible design, the third camping cell change indication carries an identifier of the potential target cell.

In another possible design, when the user equipment needs to change the camping cell, the measurement control point base station sends a first message to the user equipment, where the first message is used to indicate that the user equipment is Synchronizing or listening to the broadcast channel and paging channel of the camped cell, changing to synchronizing or listening to the broadcast channel and paging channel of the potential target cell.

In another possible design, the first message carries a change status indicator and an identifier of the potential target cell, where the change status indicator is used to indicate that the user equipment changes as a broadcast channel and a paging channel. The cell that synchronizes or listens to the object.

Through the foregoing first message, the UE can learn the change of the camped cell of the UE in time, and only needs to send a message to the UE to complete the camped cell change, which can save air interface resources.

In another possible design, before the determining whether the user equipment needs to change the camping cell, the measurement control point base station sends, according to the measurement result sent by the base station to which the potential target cell belongs, to the user equipment. a first message, the first message is used to indicate that the user equipment synchronizes or listens to the broadcast channel and the paging channel of the camping cell, and monitors or listens to the broadcast channel and the homing of the potential target cell. Call channel.

In another possible design, the first message carries an increased status indicator and an identifier of the potential target cell, the increased status indicator is used to indicate that the user equipment is added as a broadcast channel and a paging channel. The cell that synchronizes or listens to the object.

Through the foregoing first message, the UE can be informed of the change of the camped cell of the UE in time, and the UE broadcasts the broadcast channel, the paging channel, and the broadcast channel of the potential target cell simultaneously by the UE in advance. Paging the channel to improve the reliability of the UE receiving the paging message.

In another possible design, the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is the user equipment. The base station to which the anchor cell belongs.

In another possible design, the measurement control point base station is also a base station to which the original camping cell of the user equipment belongs, and the original camped cell refers to the determining that the user equipment needs to change the camped cell before The camped cell of the user equipment.

In another possible design, when the user equipment needs to change the camping cell, the measurement control point base station sends a first message to the user equipment, where the first message is used to indicate that the user equipment is Synchronizing or listening to the broadcast channel and paging channel of the original camping cell, changing to synchronizing or listening to the broadcast channel and paging channel of the potential target cell.

In another possible design, the first message carries a change status indicator and an identifier of the potential target cell, where the change status indicator is used to indicate that the user equipment changes synchronization as a broadcast channel and a paging channel or Monitor pair Like the community.

In another possible design, before the determining whether the user equipment needs to change the camping cell, the measurement control point base station sends, according to the measurement result sent by the base station to which the potential target cell belongs, to the user equipment. a first message, where the first message is used to indicate that the user equipment synchronizes or monitors a broadcast channel and a broadcast channel of the potential target cell on the basis of continuing to synchronize or listening to a broadcast channel and a paging channel of the original resident cell. a paging channel; when it is determined that the user equipment needs to change the camping cell, the measurement control point base station sends a second message to the user equipment, where the second message is used to indicate that the user equipment is no longer synchronized or monitored. a broadcast channel and a paging channel of the original camped cell.

In another possible design, the first message carries an increased status indicator and an identifier of the potential target cell, the increased status indicator is used to indicate that the user equipment is added as a broadcast channel and a paging channel. Synchronizing or listening to the cell of the object; the second message carries a state deletion indicator and an identifier of the original camping cell, the deletion state indicator is used to instruct the user equipment to delete the broadcast channel and the paging channel The cell that synchronizes or listens to the object.

In another possible design, the measurement control point base station is not the base station to which the original camping cell of the user equipment belongs, and the original camped cell refers to the determining that the user equipment needs to change the camped cell before The camped cell of the user equipment.

In another possible design, when the user equipment needs to change the camping cell, the measurement control point base station sends a first camping cell change indication to the base station to which the original camping cell belongs, the first The camped cell change indication is used to notify the camped cell of the user equipment after the potential target cell is used as a change camp cell.

In another possible design, the first camping cell change indication carries an identifier of the potential target cell.

In another possible design, the first camping cell change indication is further used to notify that the first message is sent to the user equipment, where the first message is used to indicate that the user equipment is synchronized or intercepted by the The broadcast channel and paging channel of the camping cell are changed to synchronize or listen to the broadcast channel and paging channel of the potential target cell.

In another possible design, the first camping cell change indication further carries paging information.

In another possible design, before the determining whether the user equipment needs to change the camping cell, the measurement control point base station passes the measurement result sent by the base station to which the potential target cell belongs, and passes through the user equipment. The base station to which the camping cell belongs sends a first message to the user equipment, where the first message is used to indicate that the user equipment synchronizes on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the camping cell. Or listening to a broadcast channel and a paging channel of the potential target cell;

When it is determined that the user equipment needs to change the camping cell, the measurement control point base station sends a second message to the user equipment by using the base station to which the potential target cell belongs, where the second message is used to indicate the user equipment. The broadcast channel and paging channel of the original camped cell are no longer synchronized or monitored.

In another possible design, the potential target cell and the camping cell are located in different RNAs, after the sending the second measurement request, the measurement control point base station receives the base station to which the potential target cell belongs And the conflict indication indicates that the identifier of the user equipment is carried, the conflict indication is used to indicate that an uplink tracking signal sent by the user equipment is unavailable in an RNA where the potential target cell is located; the measurement control After receiving the conflict indication, the point base station sends a first message to the user equipment, where the first message is used to instruct the user equipment to start measuring downlink signals of the camped cell of the user equipment, according to the The measurement result of the downlink signal initiates a radio resource control reconfiguration process. Thereby, the UE's mobility is managed during the movement of the UE across the RNA.

In another possible design, the measurement control point base station sends a measurement change indication to the base station to which the anchor cell of the user equipment belongs, where the measurement change indication is used to notify the anchor cell to which the user equipment belongs. The measurement mode of the user equipment of the base station is changed to measure the downlink signal.

In another possible design, the measurement change indication carries an identification of the user equipment.

In another possible design, the potential target cell and the camping cell are located in different RNAs, after the sending the second measurement request, the measurement control point base station receives the base station to which the potential target cell belongs Measurement result;

The measurement control point base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to instruct the user equipment to initiate the station to the user equipment. The downlink signal of the reserved cell is measured, and the radio resource control reconfiguration process is initiated according to the measurement result of the downlink signal.

In another possible design, the measurement control point base station is a base station to which the anchor cell of the user equipment belongs.

In another possible design, the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, and the measurement control point base station is not a base station to which the camping cell of the user equipment belongs, The measurement control point indication information is used to indicate that the measurement control point base station is a base station to which the anchor cell of the user equipment belongs.

In another possible design, the potential target cell and the camping cell are located in different RNAs, after the sending the second measurement request, the measurement control point base station receives the base station to which the potential target cell belongs And the conflict indication indicates that the identifier of the user equipment is carried, the conflict indication is used to indicate that an uplink tracking signal sent by the user equipment is unavailable in an RNA where the potential target cell is located; the measurement control After receiving the conflict indication, the point base station sends a first message to the user equipment by using a base station to which the camping cell of the user equipment belongs, where the first message is used to instruct the user equipment to start the user equipment. The downlink measurement of the camped cell initiates a radio resource control reconfiguration process according to the downlink measurement result.

The measurement control point base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, by using the base station to which the camping cell of the user equipment belongs, the first message is used to indicate The user equipment starts to measure a downlink signal of the camped cell of the user equipment, and initiates a radio resource control reconfiguration process according to the measurement result of the downlink signal.

In another possible design, the first message carries a downlink measurement indicator.

In another possible design, the first message is further used to indicate that the user equipment initiates measurement of a downlink signal of the camping cell of the user equipment and the potential target cell, according to the camping The measurement result of the downlink signal of the cell and the potential target cell initiates a radio resource control reconfiguration process.

In another possible design, the first message further carries an increased status indicator and an identifier of the potential target cell, where the added status indicator is used to indicate that the user equipment increases the measurement as a downlink reference signal. The cell of the object.

In another possible design, if the resources do not conflict, the base station to which the potential target cell belongs sends the measurement result to the anchor base station, and the anchor base station determines whether the measurement change is satisfied according to the measurement result sent by the base station to which the potential target cell belongs. condition.

In another possible design, the anchor base station sends a paging message to the UE if the measurement change condition is met. If the measurement change condition is not met, the anchor base station continues to receive the measurement results from the respective measurement base stations until the measurement change condition is satisfied according to the obtained measurement result.

In a second aspect, the embodiment of the present application provides a mobility management method for a user equipment, including:

Receiving, by the user equipment, the first message, where the first message is used to indicate that the user equipment synchronizes or listens to a broadcast channel and a paging channel of the first potential target cell, where the first potential target cell and the user The camping cell of the device at the first moment is in the same radio access notification area RNA; the user equipment synchronizes or listens to the broadcast channel and the paging channel of the first potential target cell according to the first message.

In a possible design, the first message is used to indicate that the user equipment is changed to synchronize and listen to the first by synchronizing or listening to the broadcast channel and the paging channel of the camping cell at the first moment. A broadcast channel and a paging channel of a potential target cell.

In another possible design, the first message carries a change status indicator and an identifier of the first potential target cell, the change status indicator is used to indicate that the user equipment changes as a broadcast channel and paging The synchronization of the channel or the cell of the listening object.

In another possible design, the first message is used to indicate that the user equipment synchronizes or listens on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the camping cell at the first moment. a broadcast channel and a paging channel of the first potential target cell.

In another possible design, the first message carries an increase status indicator and an identifier of the first potential target cell, the increase status indicator is used to indicate that the user equipment is added as a broadcast channel and paging The synchronization of the channel or the cell of the listening object.

In another possible design, the user equipment synchronizes or listens to the broadcast channel and the paging channel of the camping cell at the first moment, and synchronizes or monitors the first potential target cell. After the broadcast channel and the paging channel, the user equipment receives the second message at the second moment, where the second message is used to indicate that the user equipment is no longer synchronized or listens to the broadcast of the camping cell at the first moment. Channel and paging channel.

In another possible design, the second message carries a deletion status indicator and an identifier of the camping cell at the first moment, where the deletion status indicator is used to indicate that the user equipment is deleted as a broadcast channel. Synchronization with the paging channel or the cell of the listening object.

In another possible design, the user equipment receives a third message at a third moment, where the third message is used to instruct the user equipment to initiate camping on the third time and the first The downlink signal of the neighboring cell of the camping cell at the third time is measured; the user equipment initiates, according to the third message, the neighboring cell of the third time and the neighboring cell of the third time The downlink signal of the cell is measured; the user equipment initiates a radio resource control reconfiguration process when the cell reselection condition is met according to the measurement result of the downlink signal.

In another possible design, the third message carries a downlink measurement indicator.

In another possible design, the third message is further used to indicate that the user equipment initiates measurement of a downlink signal of the second potential target cell, where the second potential target cell and the third time station are located. The user equipment is in different RNAs; after receiving the third message, the user equipment starts to measure downlink signals of the second potential target cell according to the third message; And measuring a downlink test signal of the camped cell at the third moment, the neighboring cell of the camped cell at the third moment, and the second potential target cell, when the cell reselection condition is met, initiating wireless Resource control reconfiguration request.

In one possible design, the third message also carries an increased status indicator and the second potential target cell is marked with another possible knowledge.

In a third aspect, the present application provides a base station, where the base station device includes one or more transceivers and one or more processors for implementing the mobility management method of a user equipment provided by the foregoing first aspect. step.

In a fourth aspect, the present application provides a user terminal, including: a processor, a memory, a transceiver, and an input/output device, wherein the processor is mainly used to process a communication protocol and communication data, and control the entire user equipment. Execute software programs to process data from software programs. Memory is primarily used to store software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The transceiver includes a control circuit and an antenna, and is mainly used for transmitting and receiving an RF signal in the form of electromagnetic waves. The processor, the memory, the transceiver, and the input/output device are used to implement the steps in the mobility management method of the user equipment provided by the second aspect.

In a fifth aspect, the application provides a mobility management system for a user equipment, including a measurement control point base station and one or more measurement base stations, and a measurement control point base station, configured to send a first measurement request to one or more measurement base stations. The measurement request is used to indicate that the uplink tracking signal of the user equipment is measured; and the potential target cell of the user equipment is determined according to the measurement result generated by itself and/or the measurement result returned by the measurement base station, and the measurement result is And the measurement base station is configured to receive the first measurement request, and perform measurement on the uplink tracking signal of the user equipment according to the first measurement request, and the measurement is obtained by using the uplink tracking signal that is sent by the user equipment. The measurement result is sent to the measurement control point base station.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings to be used in the embodiments of the present application or the background art will be described below.

1 is a schematic diagram of an uplink measurement provided by the present application;

2 is a schematic structural view of an RNA provided by the present application;

3 is a schematic flowchart of a mobility management method of a UE according to an embodiment of the present application;

4 is a schematic diagram of a network environment to which a state management method is provided according to an embodiment of the present application;

FIG. 5 is a schematic flowchart diagram of a state management method according to an embodiment of the present application;

FIG. 6 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 7 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 8 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 9 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 10 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 11 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 12 is a schematic flowchart diagram of a state management method according to another embodiment of the present application;

FIG. 13 is a schematic structural diagram of a base station device according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a UE according to an embodiment of the present application.

detailed description

In the discussion of the 5G standard, it is envisaged to manage the mobility of the UE based on the uplink measurement. Figure 1 is a schematic diagram of an upstream measurement. RNA 1 contains four cells, CELL 1, CELL 2, CELL 3 and CELL4. RNA 2 contains 4 cells, which are CELL 5, CELL 6, CELL 7 and CELL 8. The UE sends an Uplink (UL) Tracking Signal (TS) to the network, which uniquely corresponds to one UE in the RNA range. The network determines the location of the UE according to the Transmission/Reception Point (TRP) where the received TS is located. When the network detects that the UE moves to other RNAs, it notifies the UE to perform reconfiguration of related parameters.

However, the principle of the above uplink measurement encounters many problems to be solved in the specific application process:

For example, how to set up a measurement control device. As shown in Figure 2, an RNA may contain multiple cells (or hyper cells). The core network (CN) and the anchor cell maintain the S1 bearer, and the UE-related context is stored in the anchor cell (for example, CELL1). When the UE moves inside the RNA, it may move to the anchor cell In addition, the camping cell (English can be, but not limited to: camp cell) is inconsistent with the anchor cell. In this case, how to aggregate the measurement results becomes a problem. In addition, although there are only one camp cell, there may be multiple cells (ie, measurement cells such as CELL 3) that can receive the UE TS, and how to aggregate the measurement results in this case is also a problem. Since the measurement device that measures the uplink TS is on the network side, it is necessary to perform a summary comparison of the measurement results on the network side. If the cells receiving the UE TS do not know which device to summarize the measurement results for, the subsequent positioning and other processes cannot be completed.

In order to manage the mobility of the UE in the RRC_INACTIVE state, the embodiment of the present application provides a state management method based on uplink measurement. In the following embodiments, the UEs may all be in the RRC_INACTIVE state. Optionally, the RRC_INACTIVE state has the following feature: the network side reserves context information of the UE in RRC_INACTIVE. The base station and the core network reserve connection information of the UE in RRC_INACTIVE. The network side can know the location of the UE in the RRC_INACTIVE state at the RNA layer, that is, the network layer can know which RNA the UE is in. When the UE in RRC_INACTIVE moves out of the RNA before it, the network side can be aware. Optionally, in the embodiment of the present application, the RNA has the following characteristics: each UE is in a specific RNA, and the network side can configure which RNA the UE is in; the RNA can cover one or more cells.

The embodiment of the present application provides a mobility management method for a UE. The solution provided by the embodiment of the present application is described below with reference to the accompanying drawings. In this method, each UE in the RRC_INACTIVE state corresponds to a measurement control point base station on the network side, and the mobility of the UE is managed by the measurement control point base station.

Specifically, referring to FIG. 3, the method includes:

S301. The measurement control point base station sends a measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink TS of the UE is measured. The measurement base station refers to a base station to which a measurement cell capable of receiving a TS of the UE belongs.

S302. The measurement control point base station determines, according to the measurement result generated by itself and/or the measurement result returned by the measurement base station, the potential target cell of the UE, where the measurement result is generated based on the uplink TS sent by the UE.

Optionally, the measurement control point base station is a base station to which the camping cell of the UE belongs, or a base station to which the anchor cell of the UE belongs. Further, the measurement control point base station may carry the measurement control point indication information in the measurement request, where the measurement control point indication information is used to indicate that the measurement control point base station is a base station to which the anchor cell of the UE belongs, or The base station to which the camped cell of the UE belongs. The function of the measurement control point indication information is to indicate that the measurement base station sends the measurement result to the base station to which the anchor cell belongs, or to the base station to which the camping cell belongs. The measurement base station can learn whether the measurement result should be sent to the anchor base station or the measurement result to the camping base station according to the measurement control point indication information.

Before introducing the mobility management method of the UE in combination with a specific scenario, the term potential target cell involved in the scheme is first introduced. In the LTE scenario, for a UE in the RRC_CONNECTED state, the target cell refers to a cell that is a serving cell after handover when a cell handover occurs. The UE in the RRC_CONNECTED state measures the downlink reference signal of each cell, and reports the determined target cell to the network side only when the cell handover condition is met. The potential target cell can be regarded as a target cell in which the UE in the RRC_CONNECTED state needs to measure the downlink reference signal. For the UE in the RRC_IDLE state, the UE listens to the broadcast channel during the cell reselection process, and acquires related parameters. For example, if the signal quality is lower than the threshold, the neighboring area measurement of the same frequency, the different frequency or the different system is started, and the neighboring areas are detected. and many more. The UE determines a new serving cell from a plurality of neighboring cells by measurement comparison and camps on the new serving cell. Small resident of the UE All neighbor cells of the zone can be considered as potential target cells. During the cell reselection process, the UE does not perform signaling interaction with the base station, which is implemented by the UE through internal processing.

The meaning of the potential target cell in this application is different from that in the LTE scenario. Since the present application determines the cell that the UE should camp by measuring the uplink TS of the UE by the network layer, the potential target cell refers to that the base station can learn from the UE by listening to the broadcast channel according to optional factors such as the location of the UE or the direction of motion. One or more cells selected from all neighboring areas. The potential target cell refers to a cell that the base station determines that the UE may camp in the future. From the determination result, the range of the potential target cell finally determined may be smaller than the neighboring cell in the LTE scenario, that is, the potential target cell is a subset of the neighboring cell.

The embodiment of the present application provides a mobility management method for a UE based on uplink TS measurement. In the method, a measurement control base station of the network side sends a measurement request to one or more measurement base stations to request the measurement base station to measure the uplink TS of the UE. The measurement control point base station aggregates the measurement results of the uplink TS generated by each base station for the UE, and determines the potential target cell of the UE according to the potential target cell, and the potential target cell reflects the cell where the UE may camp, thereby implementing mobility for the UE. management. During this process, the network side does not need to perform frequent signaling interaction with the UE, thereby saving air interface resources. Since the network side can know the location of the UE in time, when there is a downlink service arrival or a state change, the network side can quickly establish a connection with the UE to avoid additional delay.

FIG. 4 is a schematic diagram of a network environment to which a state management method is provided according to an embodiment of the present application. This environment includes wireless networks and UEs. The wireless network includes a core network CN, a first radio access notification area RNA 1 and a second radio access notification area RNA 2. The first radio access notification area RNA 1 includes three cells, which are CELL 1, CELL 2, and CELL 3. CELL 1 is the anchor cell of the UE. The second radio access notification area includes three cells, which are CELL 4, CELL 5, and CELL 6. The UE may be moved between the foregoing cells, and specifically includes the following scenarios: First, the UE moves between an anchor cell and a non-anchor cell, for example, from CELL 1 to CELL 2; second, the UE is in two non-anchor Inter-cell movement of cells, for example from CELL 2 to CELL 3; third, the UE moves between cells across the RNA, for example from CELL 3 to CELL 4.

In the present application, an anchor cell refers to a cell that retains context information of a UE in an RRC_INACTIVE state and remains connected to a core network.

In the LTE system, the meaning of the camp cell can refer to the definition of the serving cell in the LTE. For example, the camp cell refers to the serving cell in which the UE in the RRC_IDLE state is currently camped, or the cell in which the UE in the RRC_CONNECTED state is currently located. In the present application, the meaning of the camp cell is extended on the basis of the above, the camp cell refers to the cell whose coverage includes the UE in the RRC_INACTIVE state, the UE in the RRC_INACTIVE state synchronizes, and the broadcast channel and the paging channel that listens to the camp cell. .

When the UE moves to a cell covered by any one of the first radio access notification area RNA1 and the second radio access notification area RNA2, the cell is used as a camping cell. In the present application, for the convenience of the subsequent description, the base station to which the camped cell of the UE belongs is referred to as a camping base station. The base station to which the anchor cell belongs is referred to as an anchor base station. Broadly speaking, the base stations to which the UEs that can receive the UE TS belong are measurement base stations. In this application, in order to distinguish from the anchor base station and the camping base station, other than the anchor point base station and the camping base station, the UE can be received. The base station to which the cell of the TS belongs is called a measurement base station. In the above three scenarios, different interaction mechanisms exist between the UE and the base station, and between the base station and the base station. The following describes the specific embodiments.

According to the measurement control device, the embodiment of the present application mainly provides two solutions, which are respectively a measurement control point base. The station is a scheme for camping on the base station, and the scheme for measuring the control point base station is an anchor base station.

In the first scheme, the measurement control point base station is a camping base station. First, the camping base station of the UE (the camping base station may be an anchor base station or an anchor base station) sends a measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink TS of the UE is measured, and the measurement request is The measurement control point indication information carried in the indication is used to indicate that the measurement control point base station is a base station to which the camping cell of the UE belongs. The camping base station of the UE determines the potential target cell of the UE according to the measurement result generated by itself and/or the measurement result returned by the one or more measurement base stations. The camping base station of the UE sends a measurement request to the base station to which the potential target cell belongs, and after receiving the feedback corresponding to the base station to which the potential target cell belongs, determines a procedure to be subsequently performed.

The process to be performed subsequently includes, but is not limited to, if the potential target cell is in the same RNA as the camped cell of the UE, the camping base station of the UE determines the user equipment needs according to the measurement result returned by the base station to which the potential target cell belongs. After the camping cell is changed, the camping base station sends a camping cell change indication to the base station and other measurement base stations to which the potential target cell belongs, and sends a message to the user equipment to facilitate the network side and the UE to synchronize the changed camping cell. The camping base station also needs to send a camped cell change indication to the anchor base station when the camping base station is not the anchor point base station. Thereby, the camped cell change is completed, and the potential target cell becomes a new camped cell. After the cell of the user equipment is changed, the measurement base station that can receive the TS of the UE reports the measurement result to the base station to which the new camping cell belongs.

If the potential target cell is in a different RNA from the camping cell of the UE, the camping base station of the UE sends a message to the UE according to the measurement result or the conflict indication returned by the base station to which the potential target cell belongs, where the conflict indication is used to indicate the UE. The uplink TS is unavailable in the potential target cell, and the message sent to the UE is used to notify the UE to start measuring the downlink signal of the camped cell of the UE, and initiate radio resource control reconfiguration according to the measurement result of the downlink signal. Process. When the camping base station is not the anchor point base station, the camping base station needs to send a measurement change indication to the anchor point base station, where the measurement change indication is used to notify the anchor station of the UE that the measurement mode of the UE is changed to measure the downlink signal.

In the second scheme, the measurement control point base station is an anchor base station. First, the anchor base station of the UE (the anchor base station may be a camping base station or a camping base station) sends a measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink TS of the user equipment UE is measured. The measurement control point indication information carried in the measurement request is used to indicate that the measurement control point base station is a base station to which the anchor cell of the UE belongs. The anchor base station of the UE determines the potential target cell according to the measurement result generated by itself and/or the measurement result returned by the one or more measurement base stations, and sends a measurement request to the base station to which the potential target cell belongs. After receiving the feedback corresponding to the base station to which the potential target cell belongs, the anchor base station determines the flow to be subsequently executed.

The process to be performed subsequently includes, but is not limited to, if the potential target cell is in the same RNA as the camped cell of the UE, the anchor base station of the UE determines the user equipment needs according to the measurement result returned by the base station to which the potential target cell belongs. After the camping cell is changed, the message is sent to the UE so that the network side and the UE synchronize the changed camping cell, and the camping cell change indication does not need to be sent to other measurement base stations. If the anchor base station is not the camping base station of the UE, the foregoing message sent by the anchor base station to the UE is sent by the anchor base station to the user after the anchor base station sends the camped cell change indication to the original camping base station. Thereby completing the resident cell change. After the cell of the user equipment is changed, the measurement base station that can receive the TS of the UE still reports the measurement result to the anchor base station.

If the potential target cell is in a different RNA from the camped cell of the UE, the anchor base station of the UE sends a message to the UE according to the measurement result or the conflict indication returned by the base station to which the potential target cell belongs, where the conflict indication is used. In order to indicate that the uplink TS of the UE is unavailable in the potential target cell, the message sent to the UE is used to notify the UE to start measuring downlink signals of the camped cell of the UE, and initiate a radio resource according to the measurement result of the downlink signal. Control the reconfiguration process. When the anchor base station is not a camping base station, the foregoing message sent to the UE is sent by the anchor base station to the UE through the camping base station.

Optionally, in the foregoing solution, the message sent by the measurement control point base station to the UE is a paging message.

FIG. 5 is a schematic flowchart diagram of a state management method according to an embodiment of the present application. This embodiment is described with reference to the flowchart in the above first scheme, that is, the scheme in which the measurement control point base station is a camping base station. The method includes, but is not limited to, the following steps.

S501. The camping base station sends a first measurement request to one or more measurement base stations. The first measurement request is used to indicate that the uplink TS of the UE is measured. Optionally, the first measurement request carries measurement control point indication information, where the measurement control point indication information is used to indicate the measurement control point. The base station is a base station to which the camped cell of the UE belongs.

Optionally, the one or more measurement base stations may be notified by the two control indicators that the measurement control point base station is a base station to which the camping cell of the UE belongs, or a base station to which the anchor cell belongs. The first control indicator is used to indicate that the measurement control point base station is a base station to which the camping cell belongs. The second control indicator is used to indicate that the measurement control point base station is a base station to which the anchor cell belongs. Optionally, the one or more measurement base stations may be informed by the different states of one control indicator that the measurement control point base station is a base station to which the camping cell of the UE belongs, or a base station to which the anchor cell belongs. The first state of the control indicator can be represented by 1, and the second state of the control indicator can be represented by zero. In the embodiment shown in FIG. 5, the base station to which the camping cell belongs is the measurement control device, so the measurement request carries the first indicator.

Optionally, in order to make the measurement results of the respective measurement base stations all based on the measurement results obtained by using the same measurement parameter, the subsequent comparison analysis is easy, and the first measurement request further carries parameters required for measuring the uplink TS of the UE, so that One or more measurement base stations use these parameters to measure the UE. These parameters are, for example, at least one of a measurement duration, a signal quality threshold, and measurement control information. The measurement control information includes at least one of a terminal identifier, a measurement period, a measurement reporting condition, and a tracking signal of the user equipment.

S502. The camping base station determines a potential target cell of the UE according to one or more measurement results.

The camping base station may perform the measurement result obtained by measuring the uplink TS of the UE, and/or the measurement result returned by the one or more measurement base stations according to the measurement request in S501, optionally combining the historical motion of the UE. The information such as the trajectory estimates the direction of motion of the UE, thereby determining the potential target cell of the UE. The potential target cell is a cell that may become a camping cell of the UE.

The potential target cell and the resident cell may be in the same RNA or in different RNAs.

The state management method provided by the embodiment shown in S501-S502 of FIG. 5 is performed by the camping base station of the user equipment as a measurement control point base station, and the measurement results obtained by measuring the TS of the UE from each measurement base station are summarized, and then determined. Potential target cell of the user equipment. Thereby achieving management of UE mobility. During this process, the network side does not need to perform frequent signaling interaction with the UE, thereby saving air interface resources. Since the network side can know the location of the UE in time, when there is a downlink service arrival or a state change, the network side can quickly establish a connection with the UE to avoid additional delay.

Optionally, after S502, the camping base station that is the measurement control point base station may also change the camped cell of the UE by interacting with the base station to which the potential target cell belongs and interacting with the UE.

S503. After the camping base station determines the potential target cell, the second measurement request may be sent to the base station to which the potential target cell belongs. The second measurement request is used to indicate that the uplink TS of the user equipment UE is measured. Optionally, the second measurement request may further include measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is a resident of the UE. The base station to which the reserved cell belongs, the specific method will not be described again.

Optionally, the camping base station performs different subsequent processes according to the determination result of whether the potential target cell and the camping cell are in the same RNA. If the potential target cell is in the same RNA as the camping cell, S504-S509 is performed, and if the potential target cell and the camping cell are in different RNAs, S511-S516 are performed.

S504. The base station to which the potential target cell belongs sends the measurement result to the camping base station. The measurement result sent by the base station to which the potential target cell belongs is that the base station to which the potential target cell belongs receives the second measurement request, and is generated based on the uplink TS sent by the UE received in the potential target cell. Optionally, if the second measurement request further carries the parameter required for the measurement, the base station to which the potential target cell belongs sends the uplink TS sent by the UE in the potential target cell according to the parameter carried in the second measurement request. Measurements are taken and the measurements are sent to the resident base station.

S505. The camping base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to instruct the UE to synchronize or monitor the broadcast of the potential target cell. Channel and paging channel.

Optionally, the first message indicates that the UE synchronizes the broadcast channel and the paging channel of the potential target cell, or instructs the UE to listen to the broadcast channel and the paging channel of the potential target cell, or may also instruct the UE to synchronize and listen to the The broadcast channel and paging channel of the potential target cell.

Alternatively, the first message may be a paging message. In this embodiment, the first message sent in the manner of a paging message is referred to as a first paging message. The embodiment of the present application provides two ways to send a first paging message in different scenarios. The paging message carries different information in each mode. In the actual network environment, you can choose one according to the actual situation.

First, it is applicable to paging messages in a slow moving scenario of the UE.

The resident base station determines, according to the measurement result sent by the base station to which the received potential target cell belongs, the measurement result generated by itself, and optionally if other measurement cells exist, the measurement result sent by the other cell determines that the user equipment needs When the resident cell is changed, the first paging message is sent to the user equipment. For instructions on determining that the user equipment needs to change the camped cell, refer to step S506.

The first paging message is used to indicate that the user equipment is changed to synchronize or listen to the broadcast channel and the paging channel of the potential target cell by synchronizing or listening to the broadcast channel and the paging channel of the camping cell. The first paging message carries a change status indicator and an identifier of the potential target cell, the change status indicator is used to instruct the UE to change a cell that is a synchronization and monitoring target of a broadcast channel and a paging channel.

In a scenario where the UE moves at a slow speed, from the time when the camping base station determines that the user equipment needs to change the camping cell to the UE to receive the paging message, the mobile station has a short moving distance, and the original resident The signal quality of the cell does not deteriorate too much during this period. Therefore, it is basically ensured that the UE receives the paging message to complete the camped cell change. In this way, only the network side needs to send a paging message to the UE to complete the camped cell change, which can save air interface resources.

Second, it is applicable to paging messages in a UE fast moving scenario.

The measurement result generated by the camping base station according to the base station to which the received potential target cell belongs, and the self-generated measurement The result, and optionally if there are other measurement cells, the measurement result sent by the other cell determines that the UE needs to change the camping cell, first sends a first paging message to the user equipment, the first paging message And configured to instruct the user equipment to synchronize or monitor a broadcast channel and a paging channel of the potential target cell on the basis of continuing to synchronize or listening to a broadcast channel and a paging channel of the resident cell. Optionally, before the camping base station determines that the UE needs to change the camped cell, it determines whether the predetermined cell increase condition is met according to the measurement result. When it is determined that the predetermined cell increase condition is met, the first paging message is first sent to the user equipment. It can be understood that the predetermined cell addition condition may require the signal quality of the potential target cell to be lower than the preset camping cell change condition.

After the user equipment changes the camping cell, the base station to which the potential target cell belongs sends a second message to the user equipment. Optionally, the second message may also be a paging message. In order to distinguish from the first paging message, the second message sent by the paging message is used as the second paging message, where the second paging message is used to indicate that the user equipment is no longer synchronized or listens to the change before The broadcast channel and paging channel of the camped cell. Optionally, the second paging message is sent by the base station to which the potential target cell belongs to the user when determining that the signal quality of the camped cell before the change meets the cell release condition according to the received measurement result. The first paging message carries an increased status indicator and an identifier of the potential target cell, where the added status indicator is used to indicate that the UE increases a cell that is a synchronization or monitoring target of a broadcast channel and a paging channel; The second paging message carries a deletion status indicator and a resident cell identifier before the change, where the deletion status indicator is used to instruct the UE to delete a cell that is a synchronization or monitoring target of a broadcast channel and a paging channel. .

In a scenario where the UE moves faster, the time interval between the time when the camping base station determines that the user equipment needs to change the camping cell to the UE receiving the paging message, because the user equipment may have moved a considerable distance, the original station The signal quality of the staying cell may have deteriorated rapidly, so that the UE cannot receive the paging message. In order to improve the reliability of the paging message received by the UE, the UE may be simultaneously synchronized to monitor the broadcast channel, the paging channel, and the broadcast channel and paging channel of the potential target cell. The measurement control device may notify the UE to no longer synchronize and monitor the broadcast channel and the paging channel of the original camping cell when determining that the user equipment needs to change the camping cell according to the change of the subsequent signal quality.

S506. The camping base station determines, according to the measurement result sent by the base station to which the potential target cell belongs, whether the UE needs to change the camping cell. If the user equipment needs to change the resident cell to perform S507-S508, if the user equipment does not need to change the camping cell, return to S502 to continue receiving the measurement result sent by each measurement base station.

S507. The camping base station sends a first camping cell change indication to the base station of the potential target cell, where the first camping cell change indication is used to notify the using the potential target cell as the changed camping cell. The resident cell of the user equipment.

In order to facilitate the distinguishing of the camping cell change indication sent by the first base station to the different base stations, the camping cell change indication sent by the camping base station to the base station to which the potential target cell belongs is referred to as the “first camping cell change indication”. ". The first camping cell change indication carries at least three types of information. The first type of information is an identifier of a potential target cell, and is used to notify the camped cell of the user equipment after the potential target cell is used as a change camp cell. The second type of information is paging information so that the new camping cell sends a paging message to the UE based on the information. The third type of information is the information required for the new resident cell to perform resource control.

Exemplarily, the identifier of the potential target cell is a physical cell identifier pCELL ID, or may be an ECI composed of a base station identifier and a CELL ID.

For example, the information required for the resource control of the new camping cell includes at least one of a cell list of the radio access notification area and the measurement information, where the measurement information includes the measured cell identifier, the measurement duration, and the measurement threshold. And at least one of the information reporting conditions.

Optionally, if one or more cells that are measured by the base station are still present in the RNA in which the camping cell is located, after determining, in S506, whether the user equipment needs to change the camping cell, the method further includes:

S508. The camping base station sends a second camping cell change indication to the other measurement base station, where the second camping cell change indication is used to notify the other measurement base station to use the potential target cell as the user equipment after changing the camping cell. Resident cell. For the sake of distinction, the resident cell change indication sent by the camping base station to other measurement base stations in the embodiment of the present application is referred to as a “second camped cell change indication”. The second camping cell change indication carries the identity of the potential target cell. After receiving the second camped cell change indication, the other measurement base station sends the measurement result to the new camping base station according to the potential target cell identifier carried in the second camping change cell indication.

The camped cell change is completed by the camping base station transmitting the camped cell change indication and the paging message. After the user equipment changes the camping cell, the base station to which the potential target cell belongs becomes a new camping base station. The measurement control device is changed from the camping base station in steps 501 to 509 to the base station to which the potential target cell belongs (ie, the new camping base station), and the other measurement base station sends the uplink TS to the UE to the base station to which the potential target cell belongs. The measurement result of the measurement is performed.

In the embodiment of the present application, the camping base station requests the base station to which the potential target cell belongs to the measurement result of the potential target cell to measure the TS of the UE, so as to determine whether the UE needs to change the camped cell. If it is confirmed that the camped cell needs to be changed, the camping base station sends a paging message carrying the potential target cell to the UE, and sends a camping cell change indication to the base station to which the potential target cell belongs, thereby completing the change of the camped cell. Compared with other schemes based on the downlink measurement scheme, the foregoing method does not need to send paging messages to all cells in the RNA, which reduces signaling overhead.

Optionally, if the camping base station is not the anchor point base station, after determining, in S506, whether the user equipment needs to change the camping cell, the method further includes:

S509. The camping base station sends a third camping cell change indication to the base station to which the anchor cell of the UE belongs, where the third camping cell change indication is used to notify the potential target cell as the changed camping cell. The resident cell of the user equipment. The third camped cell change indication carries an identifier of the potential target cell. According to this, the anchor base station of the UE can know the changed camped cell in time after the camping cell of the user equipment is changed, so that the network side can know the location of the user equipment in time, and when there is a service demand, for example, when there is a downlink service arrives When the state of the user equipment needs to be changed, the data can be transmitted to the UE in time, and the service delay is shortened.

S511. The base station to which the potential target cell belongs performs resource conflict determination. If the resource conflicts, that is, the resource used by the uplink TS sent by the UE is already occupied by the other UE, the base station to which the potential target cell belongs sends a conflict indication to the camping base station, where the conflict indication is used to indicate that the uplink tracking signal sent by the UE is in the The RNA in which the potential target cell is located is not available. The identifier of the UE is carried in the conflict indication. After the camping base station receives the conflict indication, S512-S513 is performed.

If the resources do not conflict, the base station to which the potential target cell belongs sends a measurement result to the camping base station. After the camping base station receives the measurement result, S514-S516 is performed.

S512. The camping base station sends a third message to the UE. Optionally, the third message is a paging message. In order to distinguish from the first paging message and the second paging message in the foregoing S505, the third message sent to the UE in the paging message manner is called the third paging message after the camping station receives the conflict indication. .

The third paging message is used to notify the UE to start measuring the downlink signal of the camped cell of the UE, and initiate a radio resource control reconfiguration process according to the measurement result of the downlink signal. Optionally, the third paging message carries a downlink measurement indicator.

Optionally, since the potential target cell is a cell that the UE determines that the UE may be camped on by the base station, this indicates that the measurement result obtained by the potential target cell measuring the TS of the UE in each measurement cell is superior. The quality of the uplink TS and the quality of the downlink reference signal have certain reference, and the downlink reference signal of the potential target cell may be better in all neighboring areas of the UE. Therefore, the camping base station may notify the UE of the identifier of the potential target cell, so that the UE measures the downlink reference signal of the potential target cell as a reference for initiating the radio resource reconfiguration process. In this case, the camping base station may further indicate, by using a third paging message, that the UE initiates measurement of a downlink signal of the camped cell of the UE and the potential target cell, according to the camped cell and The measurement result of the downlink signal of the potential target cell initiates a radio resource control reconfiguration process. Optionally, the third paging message further includes an increase status indicator and an identifier of the potential target cell, where the increase status indicator is used to indicate that the UE increases a cell that is a measurement target of the downlink reference signal.

Optionally, if the camping base station is not the anchor point base station, the camping base station, after receiving the conflict indication, further includes:

S513. The camping base station sends a measurement change indication to the anchor base station of the UE. The measurement change indication is used to notify the base station to which the anchor cell of the UE belongs that the measurement mode of the UE is changed to measure the downlink signal. The measurement change indication carries an identifier of the UE.

S514. The camping base station determines, according to the measurement result sent by the base station to which the potential target cell belongs, whether the measurement change condition is met. If the measurement change condition is satisfied, the camping base station performs S515. If the measurement change condition is not satisfied, the camping base station continues to receive the measurement results from the respective measurement base stations until it is confirmed that the measurement change condition is satisfied according to the obtained measurement result, and then executes S515.

S515. The camping base station sends a third paging message to the UE. For a description of the third paging message, please refer to the description in S512 above.

Optionally, if the camping base station is not the anchor point base station, the camping base station, after determining that the measurement change condition is met, further includes:

S516. The camping base station sends a measurement change indication to the anchor base station of the UE. For the description of the measurement change indication, please refer to the description in S513 above.

FIG. 6 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. This embodiment is described with reference to the flowchart in the foregoing second scheme, that is, the scheme in which the measurement control point base station is an anchor base station. The method includes, but is not limited to, the following steps.

S601. The anchor base station sends a first measurement request to one or more measurement base stations. The first measurement request is used to indicate that the uplink TS of the UE is measured. Optionally, the first measurement request carries measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is a base station to which the anchor cell belongs.

Optionally, the measurement control point base station may notify, by using two control indicators, the one or more measurement base stations, whether the measurement control point base station is a base station to which the camping cell of the UE belongs, or a base station to which the anchor cell belongs. The first control indicator is used to indicate that the measurement control point base station is a base station to which the camping cell belongs. The second control indicator is used to indicate that the measurement control point base station is a base station to which the anchor cell belongs. Optionally, the one or more measurement base stations may be notified by the different status of one control indicator, whether the measurement control point base station is a base station to which the camped cell of the UE belongs, or an anchor cell Base station. The first state of the control indicator can be represented by 1, and the second state of the control indicator can be represented by zero. In the embodiment shown in FIG. 6, the base station to which the anchor cell belongs is the measurement control device, so the measurement request carries the second indicator.

S602. The anchor base station determines a potential target cell of the UE according to one or more measurement results.

The anchor base station may perform the measurement result obtained by measuring the uplink TS of the UE, and/or the measurement result returned by the one or more measurement base stations according to the measurement request in S601, optionally combining the historical motion of the UE. The information such as the trajectory estimates the direction of motion of the UE, thereby determining the potential target cell of the UE. The potential target cell is a cell that may become a camping cell of the UE.

The state management method provided by the embodiment shown in S601-S602 in FIG. 6 is performed by the anchor base station of the UE as a measurement control point base station, and the measurement results obtained by measuring the TS of the UE from each measurement base station are summarized, and then the UE is determined. Potential target cell. Thereby achieving management of UE mobility. During this process, the network side does not need to perform frequent signaling interaction with the UE, thereby saving air interface resources. Since the network side can know the location of the UE in time, when there is a downlink service arrival or a state change, the network side can quickly establish a connection with the UE to avoid additional delay.

Optionally, after S602, the anchor base station that is the measurement control point base station may also change the camped cell of the UE by interacting with the base station to which the potential target cell belongs and interacting with the UE.

S603. After determining the potential target cell, the anchor base station may send a second measurement request to the base station to which the potential target cell belongs. The second measurement request is used to indicate that the uplink TS of the user equipment UE is measured. Optionally, the second measurement request may further include measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is an anchor of the UE. The base station to which the cell belongs is not described in detail.

Optionally, the anchor base station performs different subsequent processes according to the determination result of whether the potential target cell and the camping cell are in the same RNA. If the potential target cell is in the same RNA as the camping cell, S604-S608 is performed, and if the potential target cell and the camping cell are in different RNAs, S611-S614 are performed.

S604. The base station to which the potential target cell belongs sends the measurement result to the anchor base station. The measurement result sent by the base station to which the potential target cell belongs is that the base station to which the potential target cell belongs receives the second measurement request, and is generated based on the uplink TS sent by the UE received in the potential target cell. Optionally, if the second measurement request further carries the parameter required for the measurement, the base station to which the potential target cell belongs sends the uplink TS sent by the UE in the potential target cell according to the parameter carried in the second measurement request. The measurement is performed and the measurement result is sent to the anchor base station.

S605. The anchor base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to instruct the UE to synchronize or monitor the broadcast of the potential target cell. Channel and paging channel.

Optionally, the first message indicates that the UE synchronizes the broadcast channel and the paging channel of the potential target cell, or indicates The UE listens to the broadcast channel and the paging channel of the potential target cell, or may also instruct the UE to synchronize and listen to the broadcast channel and the paging channel of the potential target cell. Alternatively, the first message may be a paging message. In this embodiment, the first message sent in the manner of a paging message is referred to as a first paging message. The embodiment of the present application provides two ways to send a first paging message in different scenarios. The paging message carries different information in each mode. In the actual network environment, you can choose one according to the actual situation.

First, it is applicable to paging messages in a slow moving scenario of the UE.

The anchor base station determines, according to the measurement result sent by the base station to which the received potential target cell belongs, the measurement result generated by itself, and optionally if other measurement cells exist, the measurement result sent by other cells determines that the user equipment needs When the resident cell is changed, the first paging message is sent to the user equipment. For instructions on determining that the user equipment needs to change the camped cell, refer to step S606.

In a scenario where the UE moves slowly, the anchor station determines that the user equipment needs to change the camping cell to the UE to receive the paging message for a short period of time, because the moving distance of the user equipment is short, the original resident The signal quality of the cell does not deteriorate too much during this period. Therefore, it is basically ensured that the UE receives the paging message to complete the camped cell change. In this way, only the network side needs to send a paging message to the UE to complete the camped cell change, which can save air interface resources.

Second, it is applicable to paging messages in a UE fast moving scenario.

The anchor base station determines, according to the measurement result sent by the base station to which the received potential target cell belongs, the measurement result of the camped cell, and optionally if there are other measurement cells, the measurement result sent by other cells determines that the UE needs Before the camping cell is changed, the first paging message is sent to the user equipment, where the first paging message is used to indicate that the user equipment continues to synchronize or listen to the broadcast channel and the paging channel of the camping cell. Up, synchronizing or listening to the broadcast channel and paging channel of the potential target cell. Optionally, the anchor base station determines whether the predetermined cell addition condition is met according to the measurement result before determining that the UE needs to change the camped cell. When it is determined that the predetermined cell increase condition is met, the first paging message is first sent to the user equipment. It can be understood that the predetermined cell addition condition may require the signal quality of the potential target cell to be lower than the preset camping cell change condition.

After the user equipment changes the camping cell, the anchor base station sends a second message to the user equipment by using the base station to which the potential target cell belongs. Optionally, the second message may also be a paging message. In order to distinguish from the first paging message, the second message sent by the paging message is used as the second paging message, where the second paging message is used to indicate that the user equipment is no longer synchronized or listens to the change before The broadcast channel and paging channel of the camped cell. Optionally, the second paging message is sent by the anchor base station to the user by the base station to which the potential target cell belongs when the signal quality of the camped cell before the change according to the received measurement result satisfies the cell release condition. The first paging message carries an increased status indicator and an identifier of the potential target cell, where the added status indicator is used to indicate that the UE increases a cell that is a synchronization or monitoring target of a broadcast channel and a paging channel; The second paging message carries a deletion status indicator and a resident cell identifier before the change, where the deletion status indicator is used to instruct the UE to delete a cell that is a synchronization or monitoring target of a broadcast channel and a paging channel. .

In a scenario where the UE moves faster, the anchor station determines that the user equipment needs to change the camping cell to the time when the UE receives the paging message, because the user equipment may have moved a considerable distance, the original station The signal quality of the staying cell may have deteriorated rapidly, so that the UE cannot receive the paging message. In order to improve the reliability of the paging message received by the UE, the UE may be simultaneously synchronized to monitor the broadcast channel, the paging channel, and the broadcast channel and paging channel of the potential target cell. The measurement control device may notify the UE to no longer synchronize and monitor the broadcast channel and the paging channel of the original camping cell when determining that the user equipment needs to change the camping cell according to the change of the subsequent signal quality.

It should be noted that if the anchor base station is the base station to which the camping cell of the UE belongs, the first paging message is sent by the anchor base station to the UE, and if the anchor base station is not the base station to which the camped cell of the UE belongs, The first paging message is that the anchor base station transmits to the UE through the camping base station of the UE, as shown in S605' in FIG.

S606. The anchor base station determines, according to the measurement result sent by the base station to which the potential target cell belongs, whether the UE needs to change the camping cell. If the user equipment needs to change the camping cell to perform S607, if the user equipment does not need to change the camping cell, return to S602 to continue receiving the measurement result sent by each measurement base station.

S607. The anchor base station sends a first camping cell change indication to the base station of the potential target cell, where the first camping cell change indication is used to notify the using the potential target cell as the changed camping cell. The resident cell of the user equipment.

In order to facilitate the distinguishing of the camping cell change indication sent by the first base station to the different base stations, the camping cell base station sends the camping cell change indication sent by the anchor base station to the base station to which the potential target cell belongs, as the “first camping cell change indication”. ". The first camped cell change indication carries the identity of the potential target cell.

S608. The anchor base station sends a second camping cell change indication to the base station to which the original camping cell of the UE belongs, where the second camping cell change indication is used to notify the potential target cell as the changed camping cell. The camped cell of the user equipment. The second camping cell change indication carries an identifier of the potential target cell.

In order to ensure that the network side and the UE synchronize the changed camped cell, the anchor base station also needs to notify the UE to change the camped cell to a potential target cell. Since the UE can only receive the paging message sent by the camping cell, the anchor base station needs to notify the camping base station to send a first message to the UE to notify the UE to change the camped cell. Optionally, the anchor base station may notify the camping base station to send the first message to the user by using a separate message, or notify the camping base station to send the first message to the user by using the second camping cell change indication, that is, the second The camping cell change indication is further configured to send a first message to the UE, where the first message is used to indicate that the user equipment is changed to synchronize by synchronizing or listening to a broadcast channel and a paging channel of the camping cell. Or listening to the broadcast channel and paging channel of the potential target cell. The latter approach can save signaling between the anchor base station and the camping base station as compared to the manner in which the message is sent separately.

S611. The base station to which the potential target cell belongs performs resource conflict determination. If the resource conflicts, that is, the resource used by the uplink TS sent by the UE is already occupied by the other UE, the base station to which the potential target cell belongs sends a conflict indication to the anchor base station, where the conflict indication is used to indicate that the uplink tracking signal sent by the UE is in the The RNA in which the potential target cell is located is not available. The identifier of the UE is carried in the conflict indication. After receiving the conflict indication, the anchor base station performs S612.

If the resources do not conflict, the base station to which the potential target cell belongs sends a measurement result to the anchor base station. After receiving the measurement result, the anchor base station performs S613-S614.

S612. The anchor base station sends a third message to the UE. Optionally, the third message is a paging message. In order to distinguish from the first paging message and the second paging message in the foregoing S605, the third message sent to the UE in the paging message manner after the base station receives the conflict indication is referred to as the third paging message. .

Optionally, since the potential target cell is a cell that the anchor base station determines that the UE may camp on, this indicates that the measurement result obtained by the potential target cell measuring the TS of the UE in each measurement cell is superior. The quality of the uplink TS and the quality of the downlink reference signal have certain reference, and the downlink reference signal of the potential target cell may be better in all neighboring areas of the UE. Therefore, the anchor base station can notify the UE of the identifier of the potential target cell, so that the UE measures the downlink reference signal of the potential target cell as a reference for initiating the radio resource reconfiguration process. In this case, the anchor base station may further indicate, by using a third paging message, that the UE initiates measurement of a downlink signal of the camped cell of the UE and the potential target cell, according to the camped cell and The measurement result of the downlink signal of the potential target cell initiates a radio resource control reconfiguration process. Optionally, the third paging message further includes an increase status indicator and an identifier of the potential target cell, where the increase status indicator is used to indicate that the UE increases a cell that is a measurement target of the downlink reference signal.

S613. The anchor base station determines, according to the measurement result sent by the base station to which the potential target cell belongs, whether the measurement change condition is met. If the measurement change condition is satisfied, the anchor base station performs S614. If the measurement change condition is not satisfied, the anchor base station continues to receive the measurement results from the respective measurement base stations until the measurement change condition is satisfied according to the obtained measurement result, and then S614 is performed.

S614. The anchor base station sends a third paging message to the UE. For a description of the third paging message, please refer to the description in S612 above.

It should be noted that if the anchor base station is the base station to which the camping cell of the UE belongs, the third paging message is sent by the anchor base station to the UE, and if the anchor base station is not the base station to which the camped cell of the UE belongs, The third paging message is sent by the anchor base station to the UE through the camping base station of the UE, as shown in S612' and S614' in FIG.

FIG. 7 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. The first mobile scenario shown in FIG. 4 is a scenario in which the UE moves from an anchor cell (CELL 1) to a non-anchor cell (CELL 2), between each base station, and between the base station and the UE. The interaction process is described in detail. In this embodiment, the measurement control point base station is a camping base station. Since the anchor cell (CELL 1) is also a camping cell at the beginning of the UE mobile, the camping base station and the anchor base station are both the base station to which the CELL1 belongs. The potential target cell is CELL 2. CELL 1 and CELL 2 are in the same RNA, RNA 1. In this embodiment, the UE refers to the same UE.

The method includes but is not limited to the following steps:

S701. The camping base station sends a first measurement request to the measurement base station. With reference to FIG. 4, in the embodiment, during the UE moving from CELL 1 to CELL 2, CELL 3 in RNA1 can also receive the TS signal of the UE, so the base station to which CELL 3 belongs is a measurement base station, which can generate The measurement result of the uplink TS of the UE.

The first measurement request is used to indicate that the measurement is performed on the uplink TS of the UE, where the measurement request carries the measurement control point Instructions. Optionally, the measurement control point indication information is used to indicate that the measurement control point base station is a camping base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again.

Optionally, the first measurement request carries an identifier of the UE, to indicate that the uplink TS of the UE is measured.

Optionally, the measurement request further carries at least one of various measurement parameters, such as a measurement duration, a signal quality threshold, and measurement control information, where the measurement control information includes a terminal identifier, a measurement period, and a measurement of the user equipment. Evaluating at least one of a condition and a tracking signal.

Alternatively, the measurement request can be sent through an interface between the base stations, such as an Xn interface.

S702. The measurement base station performs measurement on the uplink TS of the UE according to the first measurement request, and sends the measurement result to the resident base station. Optionally, after receiving the first measurement request, the base station to which the CELL 3 belongs continuously measures the uplink TS of the UE according to the measurement period in the measurement control information, and periodically sends the measurement result to the camping base station. After the base station to which the CELL 3 belongs does not receive the uplink TS of the UE for a certain period of time, the measurement result is not sent to the camping base station.

Optionally, the measurement result may be sent through an interface between the base station to which the CELL 3 belongs and the resident base station, for example, an Xn interface.

S703. The camping base station determines, according to the currently obtained measurement result, that the potential target cell of the UE is CELL 2. The measurement result includes the received measurement result from the measurement base station, and the measurement result generated by the resident base station itself measuring the uplink TS of the UE.

The camping base station may select one or more cells that are better for the measurement of the uplink TS of the UE as the potential target cell.

Optionally, when the camping base station determines the potential target cell, other factors may also be referred to based on the acquired measurement results. For example, the camping base station refers to the historical motion trajectory of the UE, and estimates the motion direction of the UE, so that the cell CELL 2 with better measurement result in the motion direction of the UE is selected as the estimated new station that is likely to become the UE in the future. The reserved cell, that is, the potential target cell is CELL 2.

S704. The camping base station sends a second measurement request to the base station to which the CELL 2 belongs. Optionally, after the camping base station determines that the potential target cell is the CELL 2, the base station to which the CELL2 belongs is obtained according to the correspondence between the cells in the stored RNA 1 and the base station to which each cell belongs. The measurement request generated by the camping base station to be sent to the base station to which the CELL2 belongs carries the measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is the resident base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again. Similar to the first measurement request, the second measurement request further carries various measurement parameters, such as at least one of a measurement duration, a signal quality threshold, and measurement control information, the measurement control information including a terminal of the user equipment At least one of an identification, a measurement period, a measurement reporting condition, and a tracking signal.

Alternatively, the second measurement request may be sent through an interface between the camping base station and the base station to which the CELL 2 belongs, such as an Xn interface.

S705. The base station to which the CELL 2 belongs sends a measurement result to the camping base station. The measurement result carries information generated by the base station to which the CELL 2 belongs to measure the uplink TS of the UE according to the parameter carried in the second measurement request. The measurement procedure of the uplink TS of the UE to which the CELL 2 belongs is similar to that of other measurement base stations. For details, refer to the description in S702, and details are not described herein again.

Alternatively, the measurement result may be sent through an interface between the base station to which the CELL 2 belongs and the resident base station, for example Xn interface.

S706. The camping base station sends a first paging message to the UE according to the measurement result sent by the base station to which the CELL 2 belongs.

Specifically, when the camping base station confirms that the signal quality of the CELL2 is superior according to the measurement report sent by the base station to which the CELL 2 belongs, the first paging message is sent to the user, and the purpose of the first paging message is to indicate that the user equipment synchronizes and monitors the location. A broadcast channel and a paging channel of the target cell.

Optionally, the camping base station may estimate the moving speed of the UE according to the historical trajectory of the UE. If the UE moves slowly, the first manner of sending the paging message introduced in the foregoing embodiment is adopted. The camping base station determines whether the preset camping cell change condition is met according to the obtained measurement result, including the self-generated measurement result. That is, step 707 is directly executed, and when the preset camping cell change condition is met, the first paging message is sent to the UE, where the paging message is used to indicate that the user equipment synchronizes or listens to the broadcast channel of the camping cell. And paging the channel, changing to synchronize and listening to the broadcast channel and paging channel of the potential target cell. Optionally, the first paging message carries a change status indicator and an identifier of the potential target cell, where the change status indicator is used to instruct the UE to change a cell that is a synchronization and monitoring target of the broadcast channel and the paging channel. For example, based on the traditional paging message, two fields may be extended, where the first field is used to carry the status indicator, and the second field is used to carry the identifier of the potential target cell. In this embodiment, the first field can occupy 2 bits, and the change status indicator can be represented by data "00".

If the fast moving of the UE is determined according to the estimated moving speed of the UE, the second manner of sending the paging message introduced in the foregoing embodiment is adopted. The camping base station determines whether the predetermined cell addition condition is met according to the measurement result before performing step 707. When it is determined that the predetermined cell increase condition is met, the camping base station sends a first paging message to the UE, where the paging message is used to indicate that the user equipment continues to synchronize or listen to the broadcast channel and the paging channel of the camping cell. Based on, the broadcast channel and the paging channel of the potential target cell are synchronized and monitored. Optionally, the first paging message carries an increased status indicator and an identifier of the potential target cell, the increased status indicator is used to indicate that the UE increases the cell that is the synchronization and monitoring target of the broadcast channel and the paging channel. The increment status indicator is carried with the first field of the extension described above, and the increment status indicator can be represented by data "01".

S707. The camping base station determines, according to the measurement result sent by the base station to which the CELL 2 belongs, whether the UE needs to change the camping cell. If it is necessary to change the camping cell, steps S708 and S709 are performed. If the camped cell does not need to be changed, the camping base station returns to S703 to continue to summarize the measurement reports of the uplink TSs of the respective measurement base stations with respect to the UE.

In a specific implementation, the resident base station compares the measurement report generated by itself with the measurement report sent by the base station to which the CELL 2 belongs. If the preset camping cell change condition is met, it is determined that the user equipment needs to change the camping cell. If the preset camping cell change condition is not met, it is determined that the user equipment does not need to change the camping cell. Exemplarily, the preset camping cell change condition may be that the signal quality of the potential target cell CELL 2 is better than the signal quality of the original camping cell CELL 1, and the duration of the difference exceeding the predetermined threshold is longer than the predetermined time. .

S708. The camping base station sends a first camping cell change indication to the base station to which the CELL 2 belongs. The first camping cell change indication is used to notify the base station to which the CELL 2 belongs to use CELL 2 as the camping cell of the UE after changing the camping cell. The first camping cell change indication carries at least one of an identifier of the potential target cell, paging information, a cell list of a radio access notification area, and measurement information, where the measurement information includes a measurement cell identifier, and a measurement At least one of a duration, a measurement threshold, and an information reporting condition.

Optionally, the first camped cell change indication may be sent by using an interface between the camping base station and the base station to which the CELL 2 belongs, such as an Xn interface.

S709. The camping base station sends a second camping cell change indication to the measurement base station (ie, the base station to which the CELL 3 belongs). The second camping cell change indication is used to notify the measuring base station that the CELL 2 is used as the camping cell of the UE after changing the camping cell, and the second camping cell change indication carries the identifier of the CELL 2. After the user terminal changes the camping cell, the measurement base station sends the measurement result to the base station to which the CELL 2 belongs.

After the UE changes the camping cell, the camping base station in steps S701-S708 will no longer be the camping base station of the UE, and the base station to which the CELL 2 belongs becomes the new camping base station of the UE, as the measurement control of the UE. Point the base station. In the case where the camping base station in steps S701-S708 can receive the TS of the UE, the measurement result of the UE is transmitted to the base station to which the CELL 2 belongs.

Optionally, if the UE moves quickly, the method further includes:

S710: After receiving the first camped cell change indication, the base station to which the CELL 2 belongs determines that the signal quality of the CELL 1 meets the cell release condition according to the received measurement result, and sends a second paging message to the UE. The second paging message is used to indicate that the user equipment is no longer synchronized and listen to the broadcast channel and paging channel of the camped cell (ie, CELL 1) before the change. Optionally, the second paging message carries a deletion status indicator and a resident cell identifier before the change. The delete status indicator can be carried with the first field of the extension described above, and the delete status indicator can be represented by data "10".

FIG. 8 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. The first mobile scenario shown in FIG. 4 is a scenario in which the UE moves from an anchor cell (CELL 1) to a non-anchor cell (CELL 2), between each base station, and between the base station and the UE. The interaction process is described in detail. In this embodiment, the measurement control point base station is an anchor point base station. Since the anchor cell (CELL 1) is also a camping cell at the beginning of the UE mobile, the camping base station and the anchor base station are both the base station to which the CELL1 belongs. The potential target cell is CELL 2. CELL 1 and CELL 2 are in the same RNA, RNA 1. In this embodiment, the UE refers to the same UE.

The method includes but is not limited to the following steps:

S801. The anchor base station sends a first measurement request to the measurement base station. With reference to FIG. 4, in the embodiment, during the UE moving from CELL 1 to CELL 2, CELL 3 in RNA1 can also receive the TS signal of the UE, so the base station to which CELL 3 belongs is a measurement base station, which can generate The measurement result of the uplink TS of the UE.

The first measurement request is used to indicate that the uplink TS of the UE is measured, and the measurement request carries the measurement control point indication information. Optionally, the measurement control point indicates information measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is an anchor point base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again.

S802. The measurement base station performs measurement on the uplink TS of the UE according to the first measurement request, and sends the measurement result to the anchor base station. Optionally, after receiving the first measurement request, the base station to which the CELL 3 belongs continuously measures the uplink TS of the UE according to the measurement period in the measurement control information, and periodically sends the measurement result to the anchor base station. Until the base station to which the CELL 3 belongs does not receive the uplink TS of the UE after a certain period of time, the measurement is not sent to the anchor base station. result.

Optionally, the measurement result may be sent through an interface between the base station to which the CELL 3 belongs and the anchor base station, for example, an Xn interface.

S803. The anchor base station determines, according to the currently obtained measurement result, that the potential target cell of the UE is CELL 2. The measurement result includes the received measurement result from the measurement base station, and the measurement result generated by the anchor base station itself measuring the uplink TS of the UE.

The anchor base station may select one or more cells that are superior to the measurement result of the uplink TS of the UE as the potential target cell.

Optionally, when determining the potential target cell, the anchor base station may refer to other factors based on the obtained measurement result. For example, the anchor base station refers to the historical motion trajectory of the UE, and estimates the motion direction of the UE, so that the cell CELL 2 with better measurement result in the motion direction of the UE is selected as the estimated new station that is likely to become the UE in the future. The reserved cell, that is, the potential target cell is CELL 2.

S804. The anchor base station sends a second measurement request to the base station to which the CELL 2 belongs. Optionally, after determining that the potential target cell is CELL 2, the anchor base station learns the base station to which CELL2 belongs according to the correspondence between each cell in the stored RNA 1 and the base station to which each cell belongs. The measurement request generated by the anchor base station to be sent to the base station to which the CELL2 belongs carries the measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is the anchor point base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again. Similar to the first measurement request, the second measurement request further carries various measurement parameters, such as at least one of a measurement duration, a signal quality threshold, and measurement control information, the measurement control information including a terminal of the user equipment At least one of an identification, a measurement period, a measurement reporting condition, and a tracking signal.

Alternatively, the second measurement request may be sent through an interface between the anchor base station and the base station to which the CELL 2 belongs, such as an Xn interface.

S805. The base station to which the CELL 2 belongs sends a measurement result to the anchor base station. The measurement result carries information generated by the base station to which the CELL 2 belongs to measure the uplink TS of the UE according to the parameter carried in the second measurement request. The measurement procedure of the uplink TS of the UE to which the CELL 2 belongs is similar to that of other measurement base stations. For details, refer to the description in S802, and details are not described herein.

Optionally, the measurement result may be sent through an interface between the base station to which the CELL 2 belongs and the anchor base station, for example, an Xn interface.

S806. The anchor base station sends a first paging message to the UE according to the measurement result sent by the base station to which the CELL 2 belongs.

Specifically, when the anchor base station confirms that the signal quality of the CELL2 is superior according to the measurement report sent by the base station to which the CELL 2 belongs, the first paging message is sent to the user, and the purpose of the first paging message is to indicate that the user equipment synchronizes and monitors the location. A broadcast channel and a paging channel of the target cell.

Optionally, the anchor base station may estimate the moving speed of the UE according to the historical trajectory of the UE. If the UE moves slowly, the first manner of sending the paging message introduced in the foregoing embodiment is adopted. The anchor base station determines whether the preset camping cell change condition is met according to the obtained measurement result, including the measurement result generated by itself. That is, the step S807 is directly performed, and when the preset camping cell change condition is met, the first paging message is sent to the UE, where the paging message is used to indicate that the user equipment synchronizes or listens to the broadcast channel of the camping cell. And paging the channel, changing to synchronize and listening to the broadcast channel and paging channel of the potential target cell. Optionally, the first paging message carries a change status indicator and The identifier of the potential target cell, the change status indicator is used to instruct the UE to change a cell that is a synchronization and monitoring target of a broadcast channel and a paging channel. For example, based on the traditional paging message, two fields may be extended, where the first field is used to carry the status indicator, and the second field is used to carry the identifier of the potential target cell. In this embodiment, the first field can occupy 2 bits, and the change status indicator can be represented by data "00".

If the fast moving of the UE is determined according to the estimated moving speed of the UE, the second manner of sending the paging message introduced in the foregoing embodiment is adopted. Before performing step S807, the anchor base station first determines whether the predetermined cell addition condition is met according to the measurement result. When it is determined that the predetermined cell increase condition is met, the anchor base station sends a first paging message to the UE, where the paging message is used to indicate that the user equipment continues to synchronize or listen to the broadcast channel and the paging channel of the resident cell. Based on, the broadcast channel and the paging channel of the potential target cell are synchronized and monitored. Optionally, the first paging message carries an increased status indicator and an identifier of the potential target cell, the increased status indicator is used to indicate that the UE increases the cell that is the synchronization and monitoring target of the broadcast channel and the paging channel. The increment status indicator is carried with the first field of the extension described above, and the increment status indicator can be represented by data "01".

S807. The anchor base station determines, according to the measurement result sent by the base station to which the CELL 2 belongs, whether the UE needs to change the camped cell. If it is necessary to change the camped cell, step S808 is performed. If the camped cell does not need to be changed, the camping base station returns to S803 to continue to summarize the measurement reports of the uplink TSs of the respective measurement base stations with respect to the UE.

In a specific implementation, the anchor base station compares the measurement report generated by the original camped cell with the measurement report sent by the base station to which the CELL 2 belongs. If the preset camping cell change condition is met, it is determined that the user equipment needs to change the camping cell. If the preset camping cell change condition is not met, it is determined that the user equipment does not need to change the camping cell. Exemplarily, the preset camping cell change condition may be that the signal quality of the potential target cell CELL 2 is better than the signal quality of the original camping cell CELL 1, and the duration of the difference exceeding the predetermined threshold is longer than the predetermined time. .

S808. The anchor base station sends a first camped cell change indication to the base station to which the CELL 2 belongs. The first camping cell change indication is used to notify the base station to which the CELL 2 belongs to use CELL 2 as the camping cell of the UE after changing the camping cell. The first camping cell change indication carries an identifier of the potential target cell.

Optionally, the first camped cell change indication may be sent through an interface between the anchor base station and the base station to which the CELL 2 belongs, such as an Xn interface.

After the UE changes the camping cell, the camping base station in steps S801-S808 will no longer be the camping base station of the UE, the base station to which the CELL 2 belongs becomes the new camping base station of the UE, and the base station and measurement to which the CELL 2 belongs. The base station still transmits the measurement result of the UE to the anchor base station.

Optionally, if the UE moves quickly, the method further includes:

S810, after the first base station change indication is sent to the base station to which the CELL 2 belongs, the anchor base station sends a second search to the base station to which the CELL 2 belongs according to the received measurement result that the signal quality of the CELL 1 meets the cell release condition. The message is forwarded and forwarded to the UE through the base station to which the CELL 2 belongs. The second paging message is used to indicate that the user equipment is no longer synchronized and listen to the broadcast channel and paging channel of the camped cell (ie, CELL 1) before the change. Optionally, the second paging message carries a deletion status indicator and a resident cell identifier before the change. The delete status indicator can be carried with the first field of the extension described above, and the delete status indicator can be represented by data "10".

FIG. 9 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. In this embodiment, the second mobile scenario shown in FIG. 4, that is, the scenario in which the UE moves from the non-anchor cell (CELL 2) to the non-anchor cell (CELL 3), between the base stations, and between the base stations and the UE The interaction process between the two is described in detail. In this embodiment, The camping base station (ie, the base station to which CELL 2 belongs) is the measurement control point base station, the anchor point base station is the base station to which CELL1 belongs, and the potential target cell is CELL 3. CELL 2 and CELL 3 are in the same RNA, RNA 1. In this embodiment, the UE refers to the same UE.

The method includes but is not limited to the following steps:

S901. The camping base station sends a first measurement request to the measurement base station. Referring to FIG. 4, in the present embodiment, in addition to CELL1, CELL2, and CELL3, if other base stations exist in RNA1, the other base stations are used as measurement base stations, and the measurement base station can generate measurement results about the uplink TS of the UE.

The first measurement request is used to indicate that the uplink TS of the UE is measured, and the measurement request carries the measurement control point indication information. Optionally, the measurement control point indication information is used to indicate that the measurement control point base station is a camping base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again.

S902. The measurement base station performs measurement on the uplink TS of the UE according to the first measurement request, and sends the measurement result to the resident base station. Optionally, after receiving the first measurement request, the measurement base station continuously measures the uplink TS of the UE according to the measurement period in the measurement control information, and periodically sends the measurement result to the camping base station. After the measurement base station does not receive the uplink TS of the UE for a certain period of time, the measurement result is not sent to the camping base station.

Alternatively, the measurement result may be sent by measuring an interface between the base station and the camping base station, such as an Xn interface.

S903. The camping base station determines, according to the currently obtained measurement result, that the potential target cell of the UE is CELL 3. The measurement result includes the received measurement result from the measurement base station, and the measurement result generated by the resident base station itself measuring the uplink TS of the UE.

Optionally, when the camping base station determines the potential target cell, other factors may also be referred to based on the acquired measurement results. For example, the camping base station refers to the historical motion trajectory of the UE, and estimates the motion direction of the UE, so that the cell CELL 3 with better measurement result in the motion direction of the UE is selected as the estimated new station that is likely to become the UE in the future. The reserved cell, that is, the potential target cell is CELL 3.

S904. The camping base station sends a second measurement request to the base station to which the CELL 3 belongs. Optionally, after the camping base station determines that the potential target cell is the CELL 3, the base station to which the CELL3 belongs is obtained according to the correspondence between the cells in the stored RNA 1 and the base station to which each cell belongs. The measurement request generated by the camping base station to be sent to the base station to which the CELL3 belongs carries the measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is the resident base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again. Similar to the first measurement request, the second measurement request further carries various measurement parameters, such as at least one of a measurement duration, a signal quality threshold, and measurement control information, the measurement control information including a terminal of the user equipment At least one of an identification, a measurement period, a measurement reporting condition, and a tracking signal.

Optionally, the second measurement request may be sent by using an interface between the camping base station and the base station to which the CELL 3 belongs. For example, the Xn interface.

S905. The base station to which the CELL 3 belongs sends a measurement result to the camping base station. The measurement result carries information generated by the base station to which the CELL 3 belongs to measure the uplink TS of the UE according to the parameter carried in the second measurement request. The measurement procedure of the uplink TS of the UE to which the CELL 3 belongs is similar to that of other measurement base stations. For details, refer to the description in S902, and details are not described herein again.

S906. The camping base station sends a first paging message to the UE according to the measurement result sent by the base station to which the CELL 3 belongs.

Specifically, when the camping base station confirms that the signal quality of the CELL3 is superior according to the measurement report sent by the base station to which the CELL 3 belongs, the first paging message is sent to the user, and the purpose of the first paging message is to indicate that the user equipment synchronizes and monitors the location. A broadcast channel and a paging channel of the target cell.

Optionally, the camping base station may estimate the moving speed of the UE according to the historical trajectory of the UE. If the UE moves slowly, the first manner of sending the paging message introduced in the foregoing embodiment is adopted. The camping base station determines whether the preset camping cell change condition is met according to the obtained measurement result, including the self-generated measurement result. That is, directly executing step S907, when the preset camping cell change condition is met, sending a first paging message to the UE, where the paging message is used to indicate that the user equipment is synchronized or listening to the broadcast channel of the camping cell. And paging the channel, changing to synchronize and listening to the broadcast channel and paging channel of the potential target cell. Optionally, the first paging message carries a change status indicator and an identifier of the potential target cell, where the change status indicator is used to instruct the UE to change a cell that is a synchronization and monitoring target of the broadcast channel and the paging channel. For example, based on the traditional paging message, two fields may be extended, where the first field is used to carry the status indicator, and the second field is used to carry the identifier of the potential target cell. In this embodiment, the first field can occupy 2 bits, and the change status indicator can be represented by data "00".

If the fast moving of the UE is determined according to the estimated moving speed of the UE, the second manner of sending the paging message introduced in the foregoing embodiment is adopted. The camping base station determines whether the predetermined cell addition condition is satisfied according to the measurement result before performing step S907. When it is determined that the predetermined cell increase condition is met, the camping base station sends a first paging message to the UE, where the paging message is used to indicate that the user equipment continues to synchronize or listen to the broadcast channel and the paging channel of the camping cell. Based on, the broadcast channel and the paging channel of the potential target cell are synchronized and monitored. Optionally, the first paging message carries an increased status indicator and an identifier of the potential target cell, the increased status indicator is used to indicate that the UE increases the cell that is the synchronization and monitoring target of the broadcast channel and the paging channel. The increment status indicator is carried with the first field of the extension described above, and the increment status indicator can be represented by data "01".

S907. The camping base station determines, according to the measurement result sent by the base station to which the CELL 3 belongs, whether the UE needs to change the camping cell. If it is necessary to change the camping cell, steps S908-S910 are performed. If the camped cell does not need to be changed, the camping base station returns to S903 to continue to summarize the measurement reports of the uplink TSs of the respective measurement base stations with respect to the UE.

In a specific implementation, the resident base station compares the measurement report generated by itself with the measurement report sent by the base station to which the CELL 3 belongs. If the preset camping cell change condition is met, it is determined that the user equipment needs to change the camping cell. If the preset camping cell change condition is not met, it is determined that the user equipment does not need to change the camping cell. Exemplarily, the preset camping cell change condition may be that the signal quality of the potential target cell CELL 3 is better than the signal quality of the original camping cell CELL 2, and the duration of the difference exceeding the predetermined threshold is longer than the predetermined time. .

S908. The camping base station sends a first camping cell change indication to the base station to which the CELL 3 belongs. The first resident small The area change indication is used to notify the base station to which the CELL 3 belongs to use CELL 3 as the camping cell of the UE after changing the camping cell. The first camping cell change indication carries at least one of an identifier of the potential target cell, paging information, a cell list of a radio access notification area, and measurement information, where the measurement information includes a measurement cell identifier, and a measurement At least one of a duration, a measurement threshold, and an information reporting condition.

Optionally, the first camped cell change indication may be sent by using an interface between the camping base station and the base station to which the CELL 3 belongs, such as an Xn interface.

S909. The camping base station sends a second camping cell change indication to the measurement base station. The second camping cell change indication is used to notify the measuring base station to use the CELL 3 as the camping cell of the UE after changing the camping cell, and the second camping cell change indication carries the identifier of the CELL 3. After the user terminal changes the camping cell, the measurement base station sends the measurement result to the base station to which the CELL 3 belongs.

S910. The camping base station sends a third camping cell change indication to the anchor base station. The third camping cell change indication is used to notify the anchor base station to use the CELL 3 as the camping cell of the UE after changing the camping cell, and the third camping cell change indication carries the identifier of the CELL 3. After the user terminal changes the camping cell, the anchor base station sends the measurement result to the base station to which the CELL 3 belongs.

After the UE changes the camping cell, the camping base station in steps S901-S908 will no longer be the camping base station of the UE, and the base station to which the CELL 3 belongs becomes the new camping base station of the UE, as the measurement control of the UE. Point the base station. In the case where the camping base station in steps S901-S908 can receive the TS of the UE, the measurement result of the UE is transmitted to the base station to which the CELL 3 belongs.

Optionally, if the UE moves quickly, the method further includes:

After receiving the first camped cell change indication, the base station to which the CELL 3 belongs determines that the signal quality of the CELL 2 satisfies the cell release condition according to the received measurement result, and sends a second paging message to the UE. The second paging message is used to indicate that the user equipment is no longer synchronized and listen to the broadcast channel and the paging channel of the camped cell (ie, CELL 2) before the change. Optionally, the second paging message carries a deletion status indicator and a resident cell identifier before the change. The delete status indicator can be carried with the first field of the extension described above, and the delete status indicator can be represented by data "10".

FIG. 10 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. In this embodiment, the second mobile scenario shown in FIG. 4, that is, the scenario in which the UE moves from the non-anchor cell (CELL 2) to the non-anchor cell (CELL 3), between the base stations, and between the base stations and the UE The interaction process between the two is described in detail. In this embodiment, the anchor point base station (ie, the base station to which CELL 1 belongs) is the measurement control point base station, the camping base station is the base station to which CELL2 belongs, and the potential target cell is CELL 3. CELL 2 and CELL 3 are in the same RNA, RNA 1. In this embodiment, the UE refers to the same UE.

The method includes but is not limited to the following steps:

S1001: The anchor base station sends a first measurement request to the measurement base station. Referring to FIG. 4, in the present embodiment, in addition to CELL1, CELL2, and CELL3, if other base stations exist in RNA1, the other base stations are used as measurement base stations, and the measurement base station can generate measurement results about the uplink TS of the UE.

The first measurement request is used to indicate that the uplink TS of the UE is measured, and the measurement request carries the measurement control point indication information. Optionally, the measurement control point indicates information measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is a resident base station. For the description of the measurement control point indication information, please refer to the previous paragraph. The description in the example is not repeated here.

S1002: The measurement base station performs measurement on the uplink TS of the UE according to the first measurement request, and sends the measurement result to the anchor base station. Optionally, after receiving the first measurement request, the measurement base station continuously measures the uplink TS of the UE according to the measurement period in the measurement control information, and periodically sends the measurement result to the anchor base station. After the measurement base station does not receive the uplink TS of the UE for a certain period of time, the measurement result is not sent to the anchor base station.

Alternatively, the measurement result may be sent by measuring an interface between the base station and the anchor base station, such as an Xn interface.

S1003. The anchor base station determines, according to the currently obtained measurement result, that the potential target cell of the UE is CELL 3. The measurement result includes the received measurement result from the measurement base station, and the measurement result generated by the resident cell measuring the uplink TS of the UE. Optionally, if the anchor cell can also receive the TS of the UE, the measurement result further includes the measurement result generated by the anchor base station itself.

Optionally, when determining the potential target cell, the anchor base station may refer to other factors based on the obtained measurement result. For example, the anchor base station refers to the historical motion trajectory of the UE, and estimates the motion direction of the UE, so that the cell CELL 3 with better measurement result in the motion direction of the UE is selected as the estimated new station that is likely to become the UE in the future. The reserved cell, that is, the potential target cell is CELL 3.

S1004: The anchor base station sends a second measurement request to the base station to which the CELL 3 belongs. Optionally, after determining that the potential target cell is CELL 3, the anchor base station learns the base station to which CELL3 belongs according to the correspondence between each cell in the stored RNA 1 and the base station to which each cell belongs. The measurement request generated by the anchor base station to be sent to the base station to which the CELL3 belongs carries the measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is the resident base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again. Similar to the first measurement request, the second measurement request further carries various measurement parameters, such as at least one of a measurement duration, a signal quality threshold, and measurement control information, the measurement control information including a terminal of the user equipment At least one of an identification, a measurement period, a measurement reporting condition, and a tracking signal.

Alternatively, the second measurement request may be sent through an interface between the anchor base station and the base station to which the CELL 3 belongs, such as an Xn interface.

S1005: The base station to which the CELL 3 belongs sends a measurement result to the anchor base station. The measurement result carries information generated by the base station to which the CELL 3 belongs to measure the uplink TS of the UE according to the parameter carried in the second measurement request. The measurement process of the uplink TS of the UE to which the CELL 3 belongs is similar to that of other measurement base stations. For details, refer to the description in S1002, and details are not described herein.

S1006: The anchor base station sends the UE to the UE by using the camping base station according to the measurement result sent by the base station to which the CELL 3 belongs. Send the first paging message.

Specifically, the anchor base station, according to the measurement report sent by the base station to which the CELL 3 belongs, confirms that the signal quality of the CELL3 is superior, and the first paging message is sent to the user by the camping base station, and the purpose of the first paging message is to indicate the user equipment. Synchronizing and listening to the broadcast channel and paging channel of the potential target cell.

Optionally, the anchor base station may estimate the moving speed of the UE according to the historical trajectory of the UE. If the UE moves slowly, the first manner of sending the paging message introduced in the foregoing embodiment is adopted. The anchor base station determines whether the preset camping cell change condition is met according to the obtained measurement result, including the measurement result generated by itself. That is, directly executing step S1007, when the preset camping cell change condition is met, the first paging message is sent to the UE by the camping base station, where the paging message is used to indicate that the user equipment is synchronized or intercepted by the camping. The broadcast channel and paging channel of the cell are changed to synchronize and listen to the broadcast channel and paging channel of the potential target cell. Optionally, the first paging message carries a change status indicator and an identifier of the potential target cell, where the change status indicator is used to instruct the UE to change a cell that is a synchronization and monitoring target of the broadcast channel and the paging channel. For example, based on the traditional paging message, two fields may be extended, where the first field is used to carry the status indicator, and the second field is used to carry the identifier of the potential target cell. In this embodiment, the first field can occupy 2 bits, and the change status indicator can be represented by data "00".

If the fast moving of the UE is determined according to the estimated moving speed of the UE, the second manner of sending the paging message introduced in the foregoing embodiment is adopted. Before performing step S1007, the anchor base station first determines whether the predetermined cell addition condition is met according to the measurement result. When it is determined that the predetermined cell addition condition is met, the anchor base station sends a first paging message to the UE by using the camping base station, where the paging message is used to indicate that the user equipment continues to synchronize or listen to the broadcast channel of the camping cell. And synchronizing and listening to the broadcast channel and the paging channel of the potential target cell on the basis of the paging channel. Optionally, the first paging message carries an increased status indicator and an identifier of the potential target cell, the increased status indicator is used to indicate that the UE increases the cell that is the synchronization and monitoring target of the broadcast channel and the paging channel. The increment status indicator is carried with the first field of the extension described above, and the increment status indicator can be represented by data "01".

S1007: The anchor base station determines, according to the measurement result sent by the base station to which the CELL 3 belongs, whether the UE needs to change the camped cell. If it is necessary to change the camped cell, steps S1008-S1009 are performed. If the camped cell does not need to be changed, the camping base station returns to S1003 to continue to summarize the measurement reports of the uplink TSs of the respective measurement base stations with respect to the UE.

In a specific implementation, the anchor base station compares the measurement report of the original camped cell with the measurement report sent by the base station to which the CELL 3 belongs. If the preset camping cell change condition is met, it is determined that the user equipment needs to change the camping cell. If the preset camping cell change condition is not met, it is determined that the user equipment does not need to change the camping cell. Exemplarily, the preset camping cell change condition may be that the signal quality of the potential target cell CELL 3 is better than the signal quality of the original camping cell CELL 2, and the duration of the difference exceeding the predetermined threshold is longer than the predetermined time. .

S1008: The anchor base station sends a first camped cell change indication to the base station to which the CELL 3 belongs. The first camping cell change indication is used to notify the base station to which the CELL 3 belongs to use CELL 3 as the camping cell of the UE after changing the camping cell. The first camping cell change indication carries an identifier of the potential target cell.

Optionally, the first camped cell change indication may be sent through an interface between the anchor base station and the base station to which the CELL 3 belongs, such as an Xn interface.

S1009: The anchor base station sends a second camping cell change indication to the camping base station. The second camping cell change indication is used to notify the camping base station to use the CELL 3 as the camping cell of the UE after changing the camping cell, and the second camping cell change indication carries the identifier of the CELL 3. After the user terminal changes the camping cell, the camping base station still sends the anchor base station to the anchor point base station. Send the measurement results.

After the UE changes the camping cell, the camping base station in steps S1001-S1009 will no longer serve as the camping base station of the UE, and the base station to which the CELL 3 belongs becomes the new camping base station of the UE, and the base station to which the CELL2 and the CELL 3 belong. And measuring the base station still transmitting the measurement result of the UE to the anchor base station.

Optionally, if the UE moves quickly, the method further includes:

S1010. After the anchor base station sends the first camping cell change indication to the base station to which the CELL 3 belongs, the anchor base station sends, according to the received measurement result, that the signal quality of the CELL 2 meets the cell release condition, and sends the signal to the base station to which the CELL 3 belongs. The second paging message is forwarded to the UE by the base station to which the CELL 3 belongs. The second paging message is used to indicate that the user equipment is no longer synchronized and listen to the broadcast channel and the paging channel of the camped cell (ie, CELL 2) before the change. Optionally, the second paging message carries a deletion status indicator and a resident cell identifier before the change. The delete status indicator can be carried with the first field of the extension described above, and the delete status indicator can be represented by data "10".

FIG. 11 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. This embodiment moves to the third mobile scenario shown in FIG. 4, that is, the UE moves between cells across the RNA, for example, from CELL 3 to CELL 4, between base stations, and between the base station and the UE. Detailed instructions are given. In this embodiment, the camping base station (ie, the base station to which CELL 3 belongs) is the measurement control point base station, the anchor point base station is the base station to which CELL1 belongs, and the potential target cell is CELL 4. CELL 3 and CELL 4 are in different RNAs. In this embodiment, the UE refers to the same UE.

S1101: The camping base station sends a first measurement request to the measurement base station. With reference to FIG. 4, in the embodiment, during the UE moving from CELL 3 to CELL 4, CELL 2 in RNA1 can also receive the TS signal of the UE, so the base station to which CELL 2 belongs is a measurement base station, which can generate The measurement result of the uplink TS of the UE.

S1102: The measurement base station performs measurement on the uplink TS of the UE according to the first measurement request, and sends the measurement result to the camping base station. Optionally, after receiving the first measurement request, the measurement base station continuously measures the uplink TS of the UE according to the measurement period in the measurement control information, and periodically sends the measurement result to the camping base station. After the measurement cell covered by the measurement base station does not receive the uplink TS of the UE for a certain period of time, the measurement result is not sent to the camping base station.

S1103: The camping base station determines, according to the currently obtained measurement result, that the potential target cell of the UE is CELL 4. The measurement result includes the received measurement result from the measurement base station, and the measurement result generated by the resident cell measuring the uplink TS of the UE.

Optionally, when the camping base station determines the potential target cell, other factors may also be referred to based on the acquired measurement results. For example, the camping base station refers to the historical motion trajectory of the UE, and estimates the motion direction of the UE, so that the cell CELL 4 with better measurement result in the motion direction of the UE is selected as the estimated new station that is likely to become the UE in the future. The reserved cell, that is, the potential target cell is CELL 4.

S1104: The camping base station sends a second measurement request to the base station to which the CELL 4 belongs. The second measurement request is used to indicate that the uplink TS of the UE is measured. Optionally, the second measurement request may further include measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is a resident of the UE. The base station to which the reserved cell belongs, the specific method will not be described again.

Optionally, the camping base station determines whether the potential target cell and the camping cell are in the same RNA, and if the potential target cell and the camping cell are in different RNAs, perform the following steps.

S1105, the base station to which the CELL 4 belongs performs resource conflict determination. If the resource conflicts, that is, the resource used by the uplink TS sent by the UE is already occupied by the other UE, the base station to which the CELL 4 belongs sends a conflict indication to the camping base station, where the conflict indication is used to indicate that the uplink tracking signal sent by the UE is in the Not available in the RNA of the potential target cell. The identifier of the UE is carried in the conflict indication. After the camping base station receives the conflict indication, S1106-S1107 is executed.

If the resources do not conflict, the base station to which the CELL 4 belongs sends a measurement result to the camping base station. After the camping base station receives the measurement result, S1108-S1110 is executed.

S1106. The camping base station sends a paging message to the UE. The paging message is used to notify the UE to start measuring downlink signals of the camped cell of the UE, and initiate a radio resource control reconfiguration process according to the measurement result of the downlink signal. Optionally, the paging message carries a downlink measurement indicator. After receiving the paging message, the UE synchronizes and monitors the broadcast channel and the paging channel of the camping cell, synchronizes and monitors the broadcast channels of other cells, and starts to measure the downlink reference signals of the camped cells and other cells. The UE initiates a radio resource reconfiguration process according to the measurement result of the downlink reference signal.

Optionally, since the CELL 4 is a cell that the UE determines that the UE may be camped on by the camping station, this indicates that the measurement result obtained by measuring the TS of the UE by the CELL 4 in each measurement cell is superior. The quality of the uplink TS and the quality of the downlink reference signal have certain reference, and the downlink reference signal of the CELL 4 may be of good quality in all neighboring areas of the UE. Therefore, the camping base station can notify the UE of the identifier of the CELL 4, so that the UE can measure the downlink reference signal of the potential target cell as a reference for initiating the radio resource reconfiguration process. In this case, the camping base station may further indicate, by using a paging message, that the UE initiates measurement of the camped cell of the UE and the downlink signal of the CELL 4, according to the downlink signal to the camped cell and the CELL 4. The measurement result initiates a radio resource control reconfiguration process. Optionally, the paging message further carries an identifier of the added status indicator and the CELL 4, where the added status indicator is used to indicate that the UE increases the cell that is the measurement target of the downlink reference signal. After receiving the paging message carrying the downlink measurement indicator, the added status indicator, and the potential target cell identifier, the UE synchronizes and monitors the broadcast channel and the paging channel of the camping cell, synchronizes and monitors the broadcast of the potential target cell and other cells. The channel initiates measurement of downlink reference signals for the camped cell, the potential target cell, and other cells. The UE initiates a radio resource reconfiguration process according to the measurement result of the downlink reference signal.

S1107. The camping base station sends a measurement change indication to the anchor base station of the UE. The measurement change indication is used to notify the base station to which the anchor cell of the UE belongs that the measurement mode of the UE is changed to measure the downlink signal. The measurement change indication carries an identifier of the UE.

S1108. The camping base station determines, according to the measurement result sent by the base station to which the CELL 4 belongs, whether the measurement change condition is met. If the measurement change condition is satisfied, the camping base station performs S1109. If the measurement change condition is not satisfied, the camping base station continues to receive the measurement results from the respective measurement base stations until the measurement change condition is satisfied according to the obtained measurement result, and then S1109 is performed.

S1109. The camping base station sends a paging message to the UE. For a description of the paging message, please refer to the description in S1106 above.

S1110: The camping base station sends a measurement change indication to the anchor base station of the UE. The measurement change indication is used to notify the base station to which the anchor cell of the UE belongs that the measurement mode of the UE is changed to measure the downlink signal. The measurement change indication carries an identifier of the UE.

FIG. 12 is a schematic flowchart diagram of a state management method according to another embodiment of the present application. This embodiment moves to the third mobile scenario shown in FIG. 4, that is, the UE moves between cells across the RNA, for example, from CELL 3 to CELL 4, between base stations, and between the base station and the UE. Detailed instructions are given. In this embodiment, the anchor base station (ie, the base station to which CELL 1 belongs) is the measurement control point base station, the resident base station is the base station to which CELL3 belongs, and the potential target cell is CELL 4. CELL 3 and CELL 4 are in different RNAs. In this embodiment, the UE refers to the same UE.

S1201: The anchor base station sends a first measurement request to the measurement base station. With reference to FIG. 4, in the embodiment, during the UE moving from CELL 3 to CELL 4, CELL 2 in RNA1 can also receive the TS signal of the UE, so the base station to which CELL 2 belongs is a measurement base station, which can generate The measurement result of the uplink TS of the UE.

The first measurement request is used to indicate that the uplink TS of the UE is measured, and the measurement request carries the measurement control point indication information. Optionally, the measurement control point indicates information measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is a resident base station. For a description of the measurement control point indication information, please refer to the description in the previous embodiment, and details are not described herein again.

S1202: The measurement base station performs measurement on the uplink TS of the UE according to the first measurement request, and sends the measurement result to the anchor base station. Optionally, after receiving the first measurement request, the measurement base station continuously measures the uplink TS of the UE according to the measurement period in the measurement control information, and periodically sends the measurement result to the camping base station. After the measurement base station does not receive the uplink TS of the UE for a certain period of time, the measurement result is not sent to the camping base station.

S1203: The anchor base station determines, according to the currently obtained measurement result, that the potential target cell of the UE is CELL 4. The measurement result includes the received measurement result from the measurement base station, and the measurement result generated by the resident cell measuring the uplink TS of the UE.

Optionally, when determining the potential target cell, the anchor base station may further refer to the obtained measurement result. other factors. For example, the camping base station refers to the historical motion trajectory of the UE, and estimates the motion direction of the UE, so that the cell CELL 4 with better measurement result in the motion direction of the UE is selected as the estimated new station that is likely to become the UE in the future. The reserved cell, that is, the potential target cell is CELL 4.

S1204: The anchor base station sends a second measurement request to the base station to which the CELL 4 belongs. The second measurement request is used to indicate that the uplink TS of the user equipment UE is measured. Optionally, the second measurement request may further include measurement control point indication information, where the measurement control point indication information is used to indicate that the measurement control point base station is a resident of the UE. The base station to which the reserved cell belongs, the specific method will not be described again.

Optionally, the anchor base station determines whether the potential target cell and the camping cell are in the same RNA, and if the potential target cell and the camping cell are in different RNAs, perform the following steps.

S1205, the base station to which the CELL 4 belongs performs resource conflict determination. If the resources are in conflict, that is, the resources used by the uplink TS sent by the UE are already occupied by other UEs, the base station to which the CELL 4 belongs sends a conflict indication to the anchor base station, where the conflict indication is used to indicate that the uplink TS sent by the UE is in the CELL 4 Not available in the RNA at the site. The identifier of the UE is carried in the conflict indication. After receiving the conflict indication, the anchor base station performs S1206.

If the resources do not conflict, the base station to which the CELL 4 belongs sends a measurement result to the anchor base station. After receiving the measurement result, the anchor base station performs S1207-S1208.

S1206. The anchor base station sends a paging message to the UE by using the camping base station. The paging message is used to notify the UE to start measuring downlink signals of the camped cell of the UE, and initiate a radio resource control reconfiguration process according to the measurement result of the downlink signal. Optionally, the paging message carries a downlink measurement indicator. After receiving the paging message, the UE synchronizes and monitors the broadcast channel and the paging channel of the camping cell, synchronizes and monitors the broadcast channels of other cells, and starts to measure the downlink reference signals of the camped cells and other cells. The UE initiates a radio resource reconfiguration process according to the measurement result of the downlink reference signal.

Optionally, since the CELL 4 is a cell that the anchor base station determines that the UE may camp on, this indicates that the measurement result obtained by measuring the TS of the UE by the CELL 4 in each measurement cell is superior. The quality of the uplink TS and the quality of the downlink reference signal have certain reference, and the downlink reference signal of the CELL 4 may be of good quality in all neighboring areas of the UE. Therefore, the anchor base station can notify the UE of the identifier of the CELL 4, so that the UE can measure the downlink reference signal of the CELL 4 as a reference for initiating the radio resource reconfiguration process. In this case, the anchor base station may further indicate, by using a paging message, that the UE initiates measurement of the camped cell of the UE and the downlink signal of the CELL 4, according to the downlink signal to the camped cell and the CELL 4. The measurement result initiates a radio resource control reconfiguration process. Optionally, the paging message further carries an identifier of the added status indicator and the CELL 4, where the added status indicator is used to indicate that the UE increases the cell that is the measurement target of the downlink reference signal. After receiving the paging message carrying the downlink measurement indicator, the added status indicator, and the potential target cell identifier, the UE synchronizes and monitors the broadcast channel and the paging channel of the camping cell, synchronizes and monitors the broadcast of the potential target cell and other cells. The channel initiates measurement of downlink reference signals for the camped cell, the potential target cell, and other cells. The UE initiates a radio resource reconfiguration process according to the measurement result of the downlink reference signal.

S1207. The anchor base station determines, according to the measurement result sent by the base station to which the potential target cell belongs, whether the measurement change condition is met. If the measurement change condition is satisfied, the anchor base station performs S1208. If the measurement change condition is not satisfied, the anchor base station continues to receive the measurement results from the respective measurement base stations until the measurement change condition is satisfied according to the obtained measurement result, and then S1208 is performed.

S1208. The anchor base station sends a paging message to the UE by using the camping base station. For a description of the paging message, please refer to the description in S1206 above.

FIG. 13 is a schematic structural diagram of a base station device according to an embodiment of the present application. The base station device can be used as the measurement control point base station in FIG. 3 and FIG. 5-12. As shown in FIG. 13, the base station device includes one or more transceivers 131 and one or more baseband units (abbreviated as: BBUs) 132. The transceiver 131 can be referred to as a remote radio unit (English: remote radio unit, RRU), a transceiver unit, a transceiver, or a transceiver circuit. The transceiver 131 can include at least one antenna 1311 and a radio frequency unit 1312.

The transceiver 131 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for transmitting the first message, the second message, the third message, and the like described in the foregoing embodiments to the UE, and to measure The base station sends a camping cell change indication, receives measurement results sent by the measurement base station, and the like. The processor 132 is mainly used for performing baseband processing, controlling a base station, and the like. The transceiver 131 and the baseband unit 132 may be physically disposed together or physically separated, that is, distributed base stations.

The baseband unit 132 is mainly used to perform baseband processing functions such as channel coding, multiplexing, modulation, spreading, and the like.

In an example, the baseband unit 132 may be composed of one or more single boards, and multiple boards may jointly support a single access system radio access network (such as an LTE network), or may separately support different access modes of wireless. Access Network. Baseband unit 132 includes a processor 1321. The processor 1321 can be used to control the flow performed by the base station shown in FIG. 13 to perform the measurement control point base station in each of the above embodiments. Optionally, baseband unit 132 may also include a memory 1322 for storing the necessary instructions and data.

FIG. 14 provides a schematic structural diagram of a UE. The UE can perform the functions of the UE in the scenario or process shown in FIG. 5 to FIG. For ease of explanation, FIG. 14 shows only the main components of the UE. As shown in FIG. 14, the UE includes a processor 1402, a memory, a control circuit, an antenna, and an input and output device. The processor is primarily used to process communication protocols and communication data, as well as to control the entire user equipment, execute software programs, process data of the software programs, for example, to support the UE in performing the actions described in the sections of Figures 5-12. Memory is primarily used to store software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The control circuit and the antenna together may also be referred to as a transceiver 1401, and are mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. For example, it may be used to perform the sending of the message sent by the base station to which the current camping cell belongs in FIG. 5-12, and optionally the message may be sent in the form of a paging message.

When the user device is powered on, the processor 1402 can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program. When the transceiver receives the message sent by the base station, the corresponding function is performed according to the information carried in the message. E.g:

The transceiver 1401 is configured to receive, at a first moment, a first message, where the first message is used to instruct the user equipment to synchronize or listen to a broadcast channel and a paging channel of a potential target cell, where the potential target cell and the user The camping cell of the device at the first moment is in the same RNA.

The processor 1402 is configured to synchronize or monitor a broadcast channel and a paging channel of the first potential target cell according to the first message.

Optionally, the first message is used to indicate that the user equipment is changed to synchronize and monitor the broadcast of the potential target cell by synchronizing or listening to the broadcast channel and the paging channel of the camping cell at the first moment. Channel and paging channel. Optionally, the first message carries a change status indicator and an identifier of the first potential target cell, where the change status refers to The indicator is used to instruct the user equipment to change a cell that is a synchronization or interception target of a broadcast channel and a paging channel. The processor 1402 is further configured to acquire, by using the first message, the change status indicator and the identifier of the potential target cell; according to the change status indicator and the identifier of the potential target cell, by synchronization Or listening to the broadcast channel and the paging channel of the camping cell at the first moment, changing to synchronizing or listening to the broadcast channel and the paging channel of the potential target cell.

Optionally, the first message is used to indicate that the user equipment synchronizes or monitors the first potential on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the camping cell at the first moment. The broadcast channel and paging channel of the target cell. Optionally, the first message carries an increased status indicator and an identifier of the potential target cell, where the added status indicator is used to indicate that the user equipment increases synchronization or interception target as a broadcast channel and a paging channel. Community. The processor 1402 is further configured to obtain, by using the first message, the added status indicator and an identifier of the first potential target cell; according to the added status indicator and the first potential target cell And identifying, on the basis of continuing to synchronize or monitoring the broadcast channel and the paging channel of the camping cell at the first moment, synchronizing or listening to the broadcast channel and the paging channel of the first potential target cell. The transceiver 1401 is further configured to receive, at a second moment, a second message, where the second message is used to indicate that the user equipment is no longer synchronized or listen to the broadcast channel and the homing of the camped cell at the first moment. And the processor 1402 is further configured to: according to the second message, no longer synchronize and monitor the broadcast channel and the paging channel of the camping cell at the first moment. The second message carries a deletion status indicator and an identifier of the camping cell at the first moment, where the deletion status indicator is used to instruct the user equipment to delete a synchronization or interception object that is a broadcast channel and a paging channel. The processor 1402 is further configured to acquire, according to the second message, the deletion status indicator and the identifier of the resident cell at the first moment; according to the deletion status indicator and the first The identity of the camped cell at the moment no longer synchronizes or listens to the broadcast channel and paging channel of the camped cell at the first moment.

Optionally, after receiving the first message or the second message, the transceiver 1401 is further configured to receive, at a third moment, a third message, where the third message is used to indicate that the user equipment initiates The downlink signals of the camped cell at the third moment and the neighboring cell of the camped cell at the third moment are measured. The processor 1402 starts to measure downlink signals of the camped cell at the third moment and the neighboring cell of the camped cell at the third moment according to the third message; according to the measurement result of the downlink signal When the cell reselection condition is met, the radio resource control reconfiguration process is initiated. Optionally, the third message carries a downlink measurement indicator; the processor 1402 obtains the downlink measurement indicator from the third message; and the resident of the third time according to the downlink measurement indicator The downlink signal of the cell and the neighboring cell of the camped cell at the third moment is measured.

Optionally, the third message is further used to indicate that the user equipment initiates measurement of a downlink signal of the second potential target cell, where the second potential target cell is different from the camped cell at the third moment. . The processor 1402 is further configured to: after receiving the third message, start to measure a downlink signal of the second potential target cell according to the third message; according to the camped cell for the third moment The measurement result of the downlink test signal of the neighboring cell of the camping cell and the second potential target cell at the third moment initiates a radio resource control reconfiguration request when the cell reselection condition is met. In this case, the third message also carries an indication of an increase status indicator and the second potential target cell.

The embodiment of the present application further provides a UE mobility management system, including a measurement control point base station and one or more measurement base stations.

a measurement control point base station, configured to send a first measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink tracking signal of the user equipment is measured; according to the measurement result generated by itself and/or the measurement base station The returned measurement result determines a potential target cell of the user equipment, and the measurement result is generated based on an uplink tracking signal sent by the user equipment.

The measuring base station is configured to receive the first measurement request, perform measurement on the uplink tracking signal of the user equipment according to the first measurement request, and send the measured measurement result to the measurement control point base station.

For a description of the measurement control point base station and the measurement base station, refer to the description in the foregoing various embodiments, and details are not described herein again.

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A mobility management method for a user equipment, comprising:

The measurement control point base station sends a first measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink tracking signal of the user equipment is measured;

The measurement control point base station determines a potential target cell of the user equipment according to the measurement result generated by the user and/or the measurement result returned by the measurement base station, and the measurement result is generated based on the uplink tracking signal sent by the user equipment. .
The method according to claim 1, wherein the first measurement request carries measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is an anchor point of the user equipment. The base station to which the cell belongs, or the base station to which the camping cell of the user equipment belongs.
The method according to claim 2, wherein after the determining a potential target cell of the user equipment, the method further comprises:

The measurement control point base station sends a second measurement request to the base station to which the potential target cell belongs, and the second measurement request carries the measurement control point indication information.
The method according to claim 3, wherein the measurement control point base station is a base station to which the camping cell of the user equipment belongs, or a base station to which the anchor cell of the user equipment belongs.
The method according to claim 4, wherein the potential target cell and the camping cell are located in the same radio access notification area RNA, and after the sending the second measurement request, the method further includes:

The measurement control point base station receives the measurement result sent by the base station to which the potential target cell belongs, and the measurement result sent by the potential target cell is that the base station to which the potential target cell belongs is based on the user equipment received in the potential target cell. The generated uplink tracking signal is generated;

The measurement control point base station determines, according to the measurement result sent by the base station to which the potential target cell belongs, whether the user equipment needs to change the camped cell.
The method according to claim 5, wherein the measurement control point base station is a base station to which the camping cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is The base station to which the camping cell of the user equipment belongs.
The method according to claim 6, wherein when the user equipment needs to change a camping cell, the method further includes:

The measurement control point base station sends a first camped cell change indication to the base station to which the potential target cell belongs, where the first camped cell change indication is used to notify that the potential target cell is used as the change camping cell The resident cell of the user equipment.
The method according to claim 6 or 7, wherein when the user equipment needs to change the camping cell, the method further includes:

The measurement control point base station sends a second camping cell change indication to the measurement base station, where the second camping cell change indication is used to notify the user equipment of the potential target cell as the changed camping cell Stay in the community.
The method according to any one of claims 6 to 8, wherein said measurement control point base station is still The base station to which the anchor cell of the user equipment belongs.
The method according to any one of claims 6 to 8, wherein the measurement control point base station is not a base station to which the anchor cell of the user equipment belongs.
The method according to claim 10, wherein when the user equipment needs to change a camping cell, the method further includes:

The measurement control point base station sends a third camped cell change indication to the base station to which the anchor cell of the user equipment belongs, and the third camped cell change indication is used to notify the potential target cell as the changed camping cell. The camped cell of the user equipment.
The method according to claim 6, wherein when the user equipment needs to change a camping cell, the method further includes:

The measurement control point base station sends a first message to the user equipment, where the first message is used to indicate that the user equipment is changed to synchronize or monitor by synchronizing or listening to a broadcast channel and a paging channel of the resident cell. a broadcast channel and a paging channel of the potential target cell.
The method according to claim 6, wherein the method further comprises: before determining whether the user equipment needs to change a resident cell, the method further comprises:

The measurement control point base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to indicate that the user equipment continues to synchronize or monitor the station. The broadcast channel and the paging channel of the potential target cell are synchronized or monitored on the basis of the broadcast channel and the paging channel of the reserved cell.
The method according to claim 5, wherein the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is The base station to which the anchor cell of the user equipment belongs.
The method according to claim 14, wherein the measurement control point base station is also a base station to which the original camping cell of the user equipment belongs, and the original camped cell refers to the determining that the user equipment needs to be changed. The camped cell of the user equipment before camping on the cell.
The method according to claim 15, wherein when the user equipment needs to change a camping cell, the method further includes:

The measurement control point base station sends a first message to the user equipment, where the first message is used to indicate that the user equipment is changed to synchronization or by monitoring or listening to a broadcast channel and a paging channel of the original resident cell. Listening to the broadcast channel and paging channel of the potential target cell.
The method according to claim 15, wherein the method further comprises: before determining whether the user equipment needs to change a camping cell, the method further comprising:

The measurement control point base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to indicate that the user equipment continues to synchronize or listen to the original Synchronizing or listening to the broadcast channel and the paging channel of the potential target cell on the basis of the broadcast channel and the paging channel of the camping cell;

When it is determined that the user equipment needs to change a resident cell, the method further includes:

The measurement control point base station sends a second message to the user equipment, where the second message is used to indicate that the user equipment no longer synchronizes or listens to the broadcast channel and the paging channel of the original resident cell.
The method according to claim 14, wherein the measurement control point base station is not a base station to which the original camping cell of the user equipment belongs, and the original camped cell refers to the determining that the user equipment needs to be changed. The camped cell of the user equipment before camping on the cell.
The method according to claim 18, wherein when the user equipment needs to change a camping cell, the method further includes:

The measurement control point base station sends a first camped cell change indication to the base station to which the original camping cell belongs, where the first camped cell change indication is used to notify the potential target cell as the changed camping cell. The resident cell of the user equipment.
The method according to claim 19, wherein the first camping cell change indication is further configured to notify that the first message is sent to the user equipment, where the first message is used to indicate that the user equipment is synchronized. Or listening to the broadcast channel and the paging channel of the camping cell, changing to synchronizing or listening to the broadcast channel and the paging channel of the potential target cell.
The method according to claim 18 or 19, wherein the method further comprises: before determining whether the user equipment needs to change a resident cell, the method further comprises:

The measurement control point base station sends a first message to the user equipment by using a base station to which the camping cell of the user equipment belongs according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to indicate The user equipment synchronizes or monitors a broadcast channel and a paging channel of the potential target cell on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the resident cell;

When it is determined that the user equipment needs to change a resident cell, the method further includes:

The measurement control point base station sends a second message to the user equipment by using the base station to which the potential target cell belongs, where the second message is used to indicate that the user equipment is no longer synchronized or monitors the broadcast of the original resident cell. Channel and paging channel.
The method according to claim 4, wherein the measurement control point base station is a base station to which the camping cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is The base station to which the camping cell of the user equipment belongs.
The method according to claim 22, wherein the potential target cell and the camping cell are located in different RNAs, and after the sending the second measurement request, the method further includes:

The measurement control point base station receives the conflict indication sent by the base station to which the potential target cell belongs, and the conflict indication carries the identifier of the user equipment, where the conflict indication is used to indicate that the uplink tracking signal sent by the user equipment is in the Not available in the RNA in which the potential target cell is located;

After receiving the conflict indication, the measurement control point base station sends a first message to the user equipment, where the first message is used to instruct the user equipment to initiate downlink signal to the camped cell of the user equipment. The measuring initiates a radio resource control reconfiguration process according to the measurement result of the downlink signal.
The method according to claim 23, wherein the measurement control point base station is also a base station to which the anchor cell of the user equipment belongs.
The method according to claim 23, wherein the measurement control point base station is not a base station to which the anchor cell of the user equipment belongs.
The method according to claim 25, wherein said measurement control point base station sets to said user The base station to which the standby anchor cell belongs sends a measurement change indication, where the measurement change indication is used to notify the base station to which the user equipment belongs to the base station, and the measurement mode of the user equipment is changed to measure the downlink signal.
The method according to claim 22, wherein the potential target cell and the camping cell are located in different RNAs, and after the sending the second measurement request, the method further includes:

Receiving, by the measurement control point base station, a measurement result sent by a base station to which the potential target cell belongs;

The measurement control point base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to instruct the user equipment to initiate the station to the user equipment. The downlink signal of the reserved cell is measured, and the radio resource control reconfiguration process is initiated according to the measurement result of the downlink signal.
The method according to claim 27, wherein the measurement control point base station is a base station to which the anchor cell of the user equipment belongs.
The method according to claim 27, wherein the measurement control point base station is not a base station to which the anchor cell of the user equipment belongs.
The method according to claim 29, wherein the measurement control point base station sends a measurement change indication to the base station to which the anchor cell of the user equipment belongs, and the measurement change indication is used to notify the anchor of the user equipment. The measurement mode of the user equipment of the base station to which the point cell belongs is changed to measure the downlink signal.
The method according to claim 4, wherein the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, and the measurement control point base station is not a camped cell of the user equipment. The base station, the measurement control point indication information is used to indicate that the measurement control point base station is a base station to which the anchor cell of the user equipment belongs.
The method according to claim 31, wherein the potential target cell and the camping cell are located in different RNAs, and after the sending the second measurement request, the method further includes:

The measurement control point base station receives the conflict indication sent by the base station to which the potential target cell belongs, and the conflict indication carries the identifier of the user equipment, where the conflict indication is used to indicate that the uplink tracking signal sent by the user equipment is in the Not available in the RNA in which the potential target cell is located;

After receiving the conflict indication, the measurement control point base station sends a first message to the user equipment by using a base station to which the camping cell of the user equipment belongs, where the first message is used to instruct the user equipment to start the pair The downlink measurement of the camped cell of the user equipment initiates a radio resource control reconfiguration process according to the downlink measurement result.
The method according to claim 32, wherein the potential target cell and the camping cell are located in different RNAs, and after the sending the second measurement request, the method further includes:

Receiving, by the measurement control point base station, a measurement result sent by a base station to which the potential target cell belongs;

The measurement control point base station sends a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, by using the base station to which the camping cell of the user equipment belongs, the first message is used to indicate The user equipment starts to measure a downlink signal of the camped cell of the user equipment, and initiates a radio resource control reconfiguration process according to the measurement result of the downlink signal.
The method according to any one of claims 23 to 30, 32 or 33, wherein the first message is further used to indicate that the user equipment initiates a camping cell for the user equipment and the potential target The downlink signal of the cell is measured, and the radio resource control reconfiguration process is initiated according to the measurement result of the downlink signal of the camping cell and the potential target cell.
A mobility management method for a user equipment, comprising:

Receiving, by the user equipment, the first message, where the first message is used to indicate that the user equipment synchronizes or listens to a broadcast channel and a paging channel of the first potential target cell, where the first potential target cell and the user The camping cell of the device at the first moment is in the same radio access notification area RNA;

And the user equipment synchronizes or listens to the broadcast channel and the paging channel of the first potential target cell according to the first message.
The method according to claim 35, wherein the first message is used to indicate that the user equipment is changed to synchronization by synchronizing or listening to the broadcast channel and the paging channel of the camping cell at the first moment. And listening to the broadcast channel and the paging channel of the first potential target cell.
The method according to claim 35, wherein the first message is used to indicate that the user equipment continues to synchronize or listen to the broadcast channel and paging channel of the camping cell at the first moment. And synchronizing or listening to the broadcast channel and the paging channel of the first potential target cell.
The method according to claim 37, wherein the user equipment synchronizes or monitors the first on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the camping cell at the first moment. After the broadcast channel and paging channel of the potential target cell, the method further includes:

The user equipment receives the second message at the second moment, where the second message is used to indicate that the user equipment no longer synchronizes or listens to the broadcast channel and the paging channel of the camping cell at the first moment.
The method according to any one of claims 35 to 38, wherein the method further comprises:

Receiving, by the user equipment, a third message, where the third message is used to instruct the user equipment to initiate neighboring of the camped cell at the third moment and the camped cell at the third moment The downlink signal of the cell is measured;

The user equipment starts to measure downlink signals of the camped cell at the third moment and the neighboring cell of the camped cell at the third moment according to the third message;

The user equipment initiates a radio resource control reconfiguration process when the cell reselection condition is met according to the measurement result of the downlink signal.
The method according to claim 39, wherein the third message is further configured to instruct the user equipment to initiate measurement of a downlink signal of a second potential target cell, the second potential target cell and the first The resident cells at three moments are in different RNAs;

After receiving the third message, the user equipment further includes:

The user equipment starts to measure a downlink signal of the second potential target cell according to the third message;

The user equipment initiates a radio resource control reconfiguration request according to the measurement and measurement result of the downlink reference signal, specifically:

The user equipment satisfies the cell reselection according to the measurement result of the downlink test signal of the camped cell at the third moment, the neighboring cell of the camped cell at the third moment, and the second potential target cell. When the condition is met, a radio resource control reconfiguration request is initiated.
A base station, wherein the base station serves as a measurement control point base station, and the base station includes a processor and a transceiver, wherein

a transceiver, configured to send a first measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink tracking signal of the user equipment is measured;

And a processor, configured to determine a potential target cell of the user equipment according to the measurement result generated by the user and/or the measurement result returned by the measurement base station, where the measurement result is generated based on an uplink tracking signal sent by the user equipment.
The base station according to claim 41, wherein the first measurement request carries measurement control point indication information, and the measurement control point indication information is used to indicate that the measurement control point base station is an anchor point of the user equipment. The base station to which the cell belongs, or the base station to which the camping cell of the user equipment belongs.
A base station according to claim 42, wherein

The transceiver is further configured to send a second measurement request to the base station to which the potential target cell belongs, where the second measurement request carries the measurement control point indication information.
The base station according to claim 43, wherein the measurement control point base station is a base station to which the camping cell of the user equipment belongs, or a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 44, wherein the potential target cell and the camping cell are located in the same radio access notification area RNA,

The transceiver is further configured to receive a measurement result sent by a base station to which the potential target cell belongs, where the measurement result sent by the potential target cell is that the base station to which the potential target cell belongs is based on the received in the potential target cell. Generated by the uplink tracking signal sent by the user equipment;

The processor is further configured to determine, according to the measurement result sent by the base station to which the potential target cell belongs, whether the user equipment needs to change the camped cell.
The base station according to claim 45, wherein the measurement control point base station is a base station to which the camping cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is The base station to which the camping cell of the user equipment belongs.
The base station according to claim 46, wherein when said processor determines that said user equipment needs to change a camping cell,

The transceiver is further configured to send a first camped cell change indication to the base station of the potential target cell, where the first camped cell change indication is used to notify that the potential target cell is used as a change camping cell The resident cell of the user equipment.
The base station according to any one of claims 46 or 47, wherein when the processor determines that the user equipment needs to change a camping cell,

The transceiver is further configured to send a second camped cell change indication to the measurement base station, where the second camped cell change indication is used to notify the user equipment after the potential target cell is used as a change camping cell Resident cell.
The base station according to any one of claims 46 to 48, wherein the measurement control point base station is also a base station to which the anchor cell of the user equipment belongs.
The base station according to any one of claims 46 to 48, wherein the measurement control point base station is not a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 50, wherein when said processor determines that said user equipment needs to change a camping cell,

The transceiver is further configured to send a third camping cell change indication to the base station to which the anchor cell of the user equipment belongs, where the third camping cell change indication is used to notify the potential target cell as a change station Used after leaving the community The resident cell of the user equipment.
The base station according to claim 46, wherein when said processor determines that said user equipment needs to change a camping cell,

The transceiver is further configured to send a first message to the user equipment, where the first message is used to indicate that the user equipment is changed to synchronize by synchronizing or listening to a broadcast channel and a paging channel of the resident cell. Or listening to the broadcast channel and paging channel of the potential target cell.
The base station according to claim 46, characterized in that

The transceiver is further configured to send, by the processor, a first message to the user equipment according to a measurement result sent by the base station to which the potential target cell belongs before the processor determines whether the user equipment needs to change the camping cell. The first message is used to indicate that the user equipment synchronizes or listens to the broadcast channel and the paging channel of the potential target cell on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the camping cell.
The base station according to claim 45, wherein the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is The base station to which the anchor cell of the user equipment belongs.
The base station according to claim 54, wherein the measurement control point base station is also a base station to which the original camping cell of the user equipment belongs, and the original camped cell refers to the determining that the user equipment needs to be changed. The camped cell of the user equipment before camping on the cell.
The base station according to claim 55, wherein when said processor determines that said user equipment needs to change a camping cell,

The transceiver is further configured to send a first message to the user equipment, where the first message is used to indicate that the user equipment is changed by: synchronizing or listening to a broadcast channel and a paging channel of the original resident cell, and changing to Synchronizing or listening to the broadcast channel and paging channel of the potential target cell.
The base station according to claim 55, wherein the processor determines whether the user equipment needs to change a camping cell,

The transceiver is further configured to send a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to indicate that the user equipment continues to synchronize or listen to the Synchronizing or listening to the broadcast channel and the paging channel of the potential target cell on the basis of the broadcast channel and the paging channel of the original camping cell;

When the processor determines that the user equipment needs to change a camping cell,

The transceiver is further configured to send a second message to the user equipment, where the second message is used to indicate that the user equipment no longer synchronizes or listens to a broadcast channel and a paging channel of the original camping cell.
The base station according to claim 54, wherein the measurement control point base station is not a base station to which the original camping cell of the user equipment belongs, and the original camped cell refers to the determining that the user equipment needs to be changed. The camped cell of the user equipment before camping on the cell.
The base station according to claim 58, wherein when said processor determines that said user equipment needs to change a camping cell,

The transceiver is further configured to send a first camping cell change indication to the base station to which the original camping cell belongs, where the first camping cell change indication is used to notify the potential target cell as a changed camping cell. The camped cell of the user equipment.
The base station according to claim 59, wherein the first camping cell change indication is further configured to notify that the first message is sent to the user equipment, where the first message is used to indicate that the user equipment is synchronized. Or listening to the broadcast channel and the paging channel of the camping cell, changing to synchronizing or listening to the broadcast channel and the paging channel of the potential target cell.
The base station according to claim 58 or 59, wherein the processor determines whether the user equipment needs to change a camping cell,

The transceiver is further configured to send a first message to the user equipment by using a base station to which the camping cell of the user equipment belongs according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used by the first message. Instructing the user equipment to synchronize or monitor the broadcast channel and the paging channel of the potential target cell on the basis of continuing to synchronize or listening to the broadcast channel and the paging channel of the resident cell;

When the processor determines that the user equipment needs to change a camping cell,

The transceiver is further configured to send a second message to the user equipment by using a base station to which the potential target cell belongs, where the second message is used to indicate that the user equipment is no longer synchronized or listen to the original camped cell. Broadcast channel and paging channel.
The base station according to claim 44, wherein the measurement control point base station is a base station to which the camping cell of the user equipment belongs, and the measurement control point indication information is used to indicate that the measurement control point base station is The base station to which the camping cell of the user equipment belongs.
The method according to claim 62, wherein the potential target cell and the camped cell are located in different RNAs, after the sending of the second measurement request,

The transceiver is further configured to receive a conflict indication sent by the base station to which the potential target cell belongs, where the conflict indication carries an identifier of the user equipment, where the conflict indication is used to indicate an uplink tracking signal sent by the user equipment. Not available in the RNA in which the potential target cell is located;

The transceiver is further configured to: after receiving the conflict indication, send a first message to the user equipment, where the first message is used to instruct the user equipment to initiate a downlink of a resident cell of the user equipment The signal is measured, and a radio resource control reconfiguration process is initiated according to the measurement result of the downlink signal.
The base station according to claim 63, wherein the measurement control point base station is also a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 63, wherein the measurement control point base station is not a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 65, characterized in that

The transceiver is further configured to send a measurement change indication to the base station to which the anchor cell of the user equipment belongs, where the measurement change indication is used to notify the base station of the user equipment that the anchor cell belongs to the user equipment. The mode is changed to measure the downlink signal.
The base station according to claim 62, wherein the potential target cell and the camping cell are located in different RNAs, after the sending of the second measurement request,

The transceiver is further configured to receive a measurement result sent by a base station to which the potential target cell belongs;

The transceiver is further configured to send a first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to instruct the user equipment to initiate the user equipment Resident cell The downlink signal is measured, and a radio resource control reconfiguration process is initiated according to the measurement result of the downlink signal.
The base station according to claim 67, wherein the measurement control point base station is a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 67, wherein the measurement control point base station is not a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 69, wherein the transceiver sends a measurement change indication to a base station to which the anchor cell of the user equipment belongs, and the measurement change indication is used to notify an anchor cell of the user equipment. The measurement mode of the user equipment of the associated base station is changed to measure the downlink signal.
The base station according to claim 44, wherein the measurement control point base station is a base station to which the anchor cell of the user equipment belongs, and the measurement control point base station is not a camped cell of the user equipment. The base station, the measurement control point indication information is used to indicate that the measurement control point base station is a base station to which the anchor cell of the user equipment belongs.
The base station according to claim 71, wherein the potential target cell and the camping cell are located in different RNAs, after the sending of the second measurement request,

The transceiver is further configured to receive a conflict indication sent by the base station to which the potential target cell belongs, where the conflict indication carries an identifier of the user equipment, where the conflict indication is used to indicate an uplink tracking signal sent by the user equipment. Not available in the RNA in which the potential target cell is located;

The transceiver is further configured to: after receiving the conflict indication, send, by using a base station to which the camping cell of the user equipment belongs, a first message, where the first message is used to indicate the user equipment A downlink measurement of the camped cell of the user equipment is initiated, and a radio resource control reconfiguration process is initiated according to the downlink measurement result.
The base station according to claim 71, wherein the potential target cell and the camping cell are located in different RNAs, after the sending the second measurement request,

The transceiver is further configured to receive a measurement result sent by a base station to which the potential target cell belongs;

Transmitting, by the base station to which the camping cell of the user equipment belongs, the first message to the user equipment according to the measurement result sent by the base station to which the potential target cell belongs, where the first message is used to indicate that the user equipment initiates The downlink signal of the camped cell of the user equipment is measured, and the radio resource control reconfiguration process is initiated according to the measurement result of the downlink signal.
The base station according to any one of claims 63 to 70, wherein the first message is further used to instruct the user equipment to initiate a downlink signal to a camping cell of the user equipment and the potential target cell. Performing a measurement, initiating a radio resource control reconfiguration procedure according to a measurement result of the downlink signal of the camping cell and the potential target cell.
A user equipment, comprising: a transceiver and a processor, wherein

a transceiver, configured to receive a first message, where the first message is used to indicate that the user equipment synchronizes or listens to a broadcast channel and a paging channel of a first potential target cell, where the first potential target cell is The camping cell of the user equipment at the first moment is in the same radio access notification area RNA;

And a processor, configured to synchronize or monitor a broadcast channel and a paging channel of the first potential target cell according to the first message.
The user equipment according to claim 75, wherein the first message is used to indicate the use The user equipment is changed to synchronize and listen to the broadcast channel and the paging channel of the first potential target cell by synchronizing or monitoring the broadcast channel and the paging channel of the camping cell at the first moment.
The user equipment according to claim 75, wherein the first message is used to indicate that the user equipment continues to synchronize or listen to the basis of the broadcast channel and the paging channel of the camping cell at the first moment. Up, synchronizing or listening to the broadcast channel and the paging channel of the first potential target cell.
The user equipment according to claim 77, wherein said synchronizing or monitoring said first potential on the basis of continuing to synchronize or listening to said broadcast channel and paging channel of said camping cell at said first moment After the broadcast channel and the paging channel of the target cell, the method further includes:

The transceiver is further configured to receive a second message at a second moment, where the second message is used to indicate that the user equipment no longer synchronizes or listens to the broadcast channel and paging of the camped cell at the first moment. channel.
User equipment according to any one of claims 75 to 78, characterized in that

The transceiver is further configured to receive a third message at a third moment, where the third message is used to instruct the user equipment to initiate camping on the camping cell and the third moment at the third moment The downlink signal of the neighboring cell of the cell is measured;

The processor starts to measure downlink signals of the camped cell at the third moment and the neighboring cell of the camped cell at the third moment according to the third message; according to the measurement result of the downlink signal, When the cell reselection condition is met, the radio resource control reconfiguration process is initiated.
The user equipment according to claim 79, wherein the third message is further used to instruct the user equipment to initiate measurement of a downlink signal of a second potential target cell, the second potential target cell and the The resident cell at the third moment is in a different RNA;

The processor is further configured to: after receiving the third message, start to measure a downlink signal of the second potential target cell according to the third message;

And determining, according to the measurement result of the downlink test signal of the camped cell at the third moment, the neighboring cell of the camped cell at the third moment, and the second potential target cell, when the cell reselection condition is met, The radio resource control reconfiguration request.
A mobility management system for a user equipment, comprising: a measurement control point base station and one or more measurement base stations, wherein:

a measurement control point base station, configured to send a first measurement request to one or more measurement base stations, where the measurement request is used to indicate that the uplink tracking signal of the user equipment is measured; according to the measurement result generated by itself and/or the measurement base station The returned measurement result determines a potential target cell of the user equipment, and the measurement result is generated based on an uplink tracking signal sent by the user equipment;

The measuring base station is configured to receive the first measurement request, perform measurement on the uplink tracking signal of the user equipment according to the first measurement request, and send the measured measurement result to the measurement control point base station.