CN117676734A

CN117676734A - Cell access method, execution condition configuration method, terminal and network equipment

Info

Publication number: CN117676734A
Application number: CN202211049432.2A
Authority: CN
Inventors: 张不方; 许萌
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2024-03-08
Also published as: WO2024045908A1

Abstract

The application provides a cell access method, an execution condition configuration method, a terminal and network side equipment, wherein the cell access method comprises the following steps: the terminal receives the conditional reconfiguration configuration information sent by the network side equipment, wherein the conditional reconfiguration configuration information comprises the following components: configuration information of a first execution condition of PCell handover and configuration information of a second execution condition added or changed by PSCell; the terminal measures and evaluates PCell and PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determines corresponding target PCell and target PSCell; the terminal initiates access of a corresponding cell according to the determined target PCell and target PScell; the terminal can be ensured to select a proper PCell cell and a corresponding candidate PScell cell for access, so that the switching robustness and reliability are improved.

Description

Cell access method, execution condition configuration method, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a cell access method, an execution condition configuration method, a terminal, and a network side device.

Background

In order to improve the robustness and reliability of the mobile, condition switching CHO and CPAC are introduced in the current technology, wherein the CPAC refers to a primary Secondary cell (Primary Secondary Cell, PSCell) condition change in a Secondary Node (SN) without participation of a primary Node (MN), and further introduces a PSCell condition change and a condition PSCell addition between SNs.

In the prior art, only the network side is supported to independently configure CHO or CPAC for the terminal, namely, the terminal only judges whether the Primary Cell (PCell) switching condition is met when configuring CHO so as to only execute the PCell switching process, namely, the PCell switching process is not accompanied by PSCell addition or change; or, the terminal only determines whether the execution condition of PSCell addition or change is satisfied when the CPAC is configured, so that only the PSCell addition or change procedure is executed, i.e., the PSCell addition or change procedure is not accompanied by the PCell handover procedure.

The prior art is considering the condition PCell handover scenario of a plurality of introduced candidate pscells, but in the actual evaluation process, the execution conditions of the candidate PCell and the corresponding candidate PSCell are difficult to be satisfied at the same time, which results in that the terminal cannot select a suitable PCell and the corresponding PSCell access, and thus causes handover failure.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a cell access method, an execution condition configuration method, a terminal, and a network side device, so as to solve the problem in the prior art that a terminal cannot select a suitable PCell and a corresponding PSCell in a conditional PCell switching scenario of multiple candidate pscells.

In order to solve the above-mentioned problem, an embodiment of the present application provides a cell access method, which includes:

the terminal receives the conditional reconfiguration configuration information sent by the network side equipment, wherein the conditional reconfiguration configuration information comprises the following components: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PScell;

the terminal measures and evaluates PCell and PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determines corresponding target PCell and target PSCell;

and the terminal initiates the access of the corresponding cell according to the determined target PCell and target PScell.

Wherein the conditional reconfiguration configuration information satisfies at least one of:

the trigger time TTT configuration in the condition trigger reporting event corresponding to the first execution condition is larger than the first TTT; wherein the first TTT is: the condition corresponding to the second execution condition of the candidate PScell associated with the PCell triggers the longest TTT in the reporting event;

The TTT configuration in the reporting event is set to 0 under the condition triggering corresponding to the second execution condition;

and the condition corresponding to the second execution condition triggers that TTT is not configured in the reporting event.

Wherein the method further comprises:

the terminal determines relevant information of a hysteresis timer according to network configuration or preset agreement or terminal implementation, wherein the relevant information of the hysteresis timer comprises at least one of the following items:

configuration information of the hysteresis timer;

indication information indicating whether or not the start of the hysteresis timer is supported.

The method for determining the target PCell and the target PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition includes:

in the case that the evaluation determines that at least one first candidate PCell meeting the first execution condition exists, and the candidate PSCell corresponding to the first candidate PCell does not meet the second execution condition, the terminal starts a hysteresis timer;

during the running of the hysteresis timer, the terminal evaluates the candidate PSCell associated with the first candidate PCell, selects one candidate PSCell as a target PSCell, and takes the first candidate PCell associated with the target PSCell as a target PCell.

During the running of the hysteresis timer, the terminal evaluates candidate pscells associated with the first candidate PCell, and selects one candidate PSCell as a target PSCell, including:

during the running of the hysteresis timer, evaluating and determining that a candidate PScell meeting the second execution condition exists, wherein the terminal takes the candidate PScell meeting the second execution condition as the target PScell;

or,

and during the running period of the hysteresis timer, evaluating and determining that no candidate PScell meeting the second execution condition exists, and selecting one candidate PScell from the candidate PScells corresponding to the first candidate PCell as the target PScell by the terminal according to a first rule.

Wherein the first rule includes at least one of:

selecting any one candidate PScell based on terminal implementation;

and selecting the PScell with the highest measurement quality value from the candidate PScells.

in the case that the evaluation determines that at least one first candidate PSCell meeting the second execution condition exists, and the candidate PCell corresponding to the first candidate PSCell does not meet the first execution condition, the terminal starts a hysteresis timer;

During the running of the hysteresis timer, the terminal evaluates the candidate PCell associated with the first candidate PSCell, selects one candidate PCell as a target PCell, and takes the first candidate PSCell associated with the target PCell as a target PSCell.

During the running of the hysteresis timer, the terminal evaluates the candidate PCell associated with the first candidate PSCell, and selects one candidate PCell as a target PCell, including:

during the running of the hysteresis timer, evaluating and determining that a candidate PCell meeting the first execution condition exists, wherein the terminal takes the candidate PCell meeting the first execution condition as the target PCell;

or,

during the running of the hysteresis timer, the evaluation determines that there is no candidate PCell satisfying the first execution condition, and the terminal selects one candidate PCell from the candidate pcells associated with the first candidate PSCell as the target PCell according to a second rule.

Wherein the second rule includes at least one of:

selecting any one candidate PCell based on terminal implementation;

and selecting the PCell with the highest measurement quality value from the candidate PCells.

Wherein the method further comprises:

After the terminal determines the target PCell and the target PSCell, the terminal closes the hysteresis timer.

Wherein the method further comprises:

and during the running period of the hysteresis timer, the terminal continues to perform measurement and evaluation on other candidate PCells which do not meet the first execution condition, and/or performs measurement and evaluation on other candidate PScells which do not meet the second execution condition.

Wherein the method further comprises:

if the candidate PCell meets the first execution condition and the candidate PSCell corresponding to the candidate PCell meeting the first execution condition also meets the second execution condition, determining the candidate PCell meeting the first execution condition as a target PCell and the candidate PSCell associated with the target PCell meeting the second execution condition as a target PSCell.

Wherein the method further comprises:

during the running of the hysteresis timer, the terminal stops performing measurement evaluation on other candidate pcells which do not meet the first execution condition, and/or stops performing measurement evaluation on other candidate pscells which do not meet the second execution condition.

Wherein, the configuration granularity of the hysteresis timer is a first granularity; the first granularity includes at least one of:

Each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

The embodiment of the application also provides an execution condition configuration method, which comprises the following steps:

the network side equipment sends condition reconfiguration configuration information to the terminal, wherein the condition reconfiguration configuration information comprises the following steps: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PSCell.

Wherein the method further comprises:

the network side equipment sends a Radio Resource Control (RRC) reconfiguration message to the terminal, wherein the RRC reconfiguration message carries relevant information of a hysteresis timer; the relevant information of the hysteresis timer comprises at least one of the following:

Configuration information of the hysteresis timer;

The RRC reconfiguration message further carries the conditional reconfiguration configuration information.

Wherein the configuration granularity of the hysteresis timer is a first granularity, the first granularity comprising at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

The embodiment of the application also provides a terminal, which comprises a memory, a transceiver and a processor:

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

receiving conditional reconfiguration configuration information sent by network side equipment, wherein the conditional reconfiguration configuration information comprises: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PScell;

measuring and evaluating the PCell and the PScell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determining a corresponding target PCell and a target PScell;

And initiating access of the corresponding cell according to the determined target PCell and target PScell.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

according to network configuration or preset agreement or terminal implementation, determining relevant information of a hysteresis timer, wherein the relevant information of the hysteresis timer comprises at least one of the following:

configuration information of the hysteresis timer;

And during the running period of the hysteresis timer, evaluating the candidate PScell associated with the first candidate PCell, selecting one candidate PScell as a target PScell, and taking the first candidate PCell associated with the target PScell as a target PCell.

during the running of the hysteresis timer, evaluating and determining that a candidate PScell meeting the second execution condition exists, and taking the candidate PScell meeting the second execution condition as the target PScell;

or,

and during the running period of the hysteresis timer, evaluating and determining that no candidate PScell meeting the second execution condition exists, and selecting one candidate PScell from the candidate PScells corresponding to the first candidate PCell as the target PScell according to a first rule.

Wherein the first rule includes at least one of:

selecting any one candidate PScell based on terminal implementation;

starting a hysteresis timer when the evaluation determines that at least one first candidate PSCell meeting the second execution condition exists and a candidate PCell corresponding to the first candidate PSCell does not meet the first execution condition;

And during the running period of the hysteresis timer, evaluating the candidate PCell associated with the first candidate PSCell, selecting one candidate PCell as a target PCell, and taking the first candidate PSCell associated with the target PCell as a target PSCell.

during the running of the hysteresis timer, evaluating and determining that a candidate PCell meeting the first execution condition exists, and taking the candidate PCell meeting the first execution condition as the target PCell;

or,

during the running of the hysteresis timer, the evaluation determines that there is no candidate PCell satisfying the first execution condition, and one candidate PCell is selected as the target PCell from the candidate pcells associated with the first candidate PSCell according to a second rule.

Wherein the second rule includes at least one of:

selecting any one candidate PCell based on terminal implementation;

and during the running period of the hysteresis timer, continuing to perform measurement and evaluation on other candidate PCells which do not meet the first execution condition, and/or performing measurement and evaluation on other candidate PScells which do not meet the second execution condition.

and stopping performing measurement evaluation on other candidate PCells which do not meet the first execution condition and/or stopping performing measurement evaluation on other candidate PScells which do not meet the second execution condition during the operation of the hysteresis timer.

Each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

The embodiment of the application also provides a terminal, which comprises:

the receiving unit is configured to receive conditional reconfiguration configuration information sent by the network side device, where the conditional reconfiguration configuration information includes: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PScell;

an evaluation determining unit, configured to perform measurement evaluation on the PCell and the PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determine a corresponding target PCell and a target PSCell;

and the access initiating unit is used for initiating the access of the corresponding cell according to the determined target PCell and the target PScell.

The embodiment of the application also provides network side equipment, which comprises a memory, a transceiver and a processor:

and sending the condition reconfiguration configuration information to the terminal, wherein the condition reconfiguration configuration information comprises the following steps: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PSCell.

sending a Radio Resource Control (RRC) reconfiguration message to the terminal, wherein the RRC reconfiguration message carries relevant information of a hysteresis timer; the relevant information of the hysteresis timer comprises at least one of the following:

configuration information of the hysteresis timer;

each PCell;

PSCell associated with each PCell;

Each condition is reassigned with an ID;

each cell handover;

each node.

The embodiment of the application also provides a network side device, which comprises:

a sending unit, configured to send, to a terminal, condition reconfiguration configuration information, where the condition reconfiguration configuration information includes: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PSCell.

Embodiments of the present application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the method as described above.

The technical scheme of the application has at least the following beneficial effects:

in the embodiment of the application, under a condition PCell switching scene with a plurality of candidate PScells, network side equipment configures execution conditions for each candidate PCell and each associated candidate PScell respectively, a terminal respectively measures and evaluates candidate PCell and candidate PScell pairs, and initiates access of a corresponding cell after evaluating and determining that a target PCell and a corresponding target PScell meet the corresponding execution conditions; therefore, the terminal can be ensured to select a proper PCell cell and a corresponding candidate PScell cell to be accessed, and switching robustness and reliability are improved.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart illustrating steps of a cell access method according to an embodiment of the present application;

FIG. 3 is a flowchart illustrating steps of a method for configuring execution conditions according to an embodiment of the present application;

fig. 4 shows one of schematic structural diagrams of a terminal provided in an embodiment of the present application;

FIG. 5 shows a second schematic structural diagram of a terminal according to an embodiment of the present disclosure;

fig. 6 shows one of schematic structural diagrams of a network side device according to an embodiment of the present application;

fig. 7 shows a second schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present application more apparent, the following detailed description will be given with reference to the accompanying drawings and the specific embodiments.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal device 11 and a network device 12. The terminal device 11 may also be referred to as a terminal or User Equipment (UE). Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may be a base station or a core network, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

In the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evolved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

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

As shown in fig. 2, an embodiment of the present application further provides a cell access method, where the method includes:

step 201, a terminal receives conditional reconfiguration configuration information sent by a network side device, where the conditional reconfiguration configuration information includes: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by one or more primary and secondary cells pscells;

optionally, the network side device may carry one or more of the conditional reconfiguration configuration information through an RRC reconfiguration message.

In this step, the above-mentioned condition reconfiguration configuration information may further include: configuration information of PCell switching and configuration information added or changed by one PScell; or, configuration information of PCell switching and configuration information added or changed by at least two PScells; specific content of the configuration information is not limited in this application.

Step 202, the terminal measures and evaluates the PCell and the PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determines a corresponding target PCell and a target PSCell;

optionally, the method specifically comprises the following steps: performing measurement evaluation on the PCell according to the configuration information of the first execution condition; performing measurement evaluation on the PSCell according to the configuration information of the second execution condition; the order of measurement evaluation described above is not limited in this application.

In step 203, the terminal initiates access of the corresponding cell according to the determined target PCell and target PSCell.

In a condition PCell switching scenario with multiple candidate pscells, in the embodiment of the present application, a network side device configures an execution condition for each candidate PCell and its associated candidate PSCell, a terminal measures and evaluates candidate PCell and candidate PSCell pairs, and initiates access of a corresponding cell after evaluating and determining that a target PCell and its corresponding target PSCell meet the corresponding execution condition; therefore, the terminal can be ensured to select a proper PCell cell and a corresponding candidate PScell cell to be accessed, and switching robustness and reliability are improved.

In at least one embodiment of the present application, the conditional reconfiguration configuration information satisfies at least one of:

The condition triggering reporting event corresponding to the first execution condition is: the conditions configured in the reporting configuration corresponding to the reporting configuration ID associated with the measurement identifier corresponding to the first execution condition trigger a reporting event; optionally, the first TTT is the longest TTT in TTTs in the reporting event triggered by a corresponding condition in one or more second execution conditions configured for one or more candidate pscells corresponding to the PCell on the network side;

the condition triggering reporting event corresponding to the second execution condition is as follows: the conditions configured in the reporting configuration corresponding to the reporting configuration ID associated with the measurement identifier corresponding to the second execution condition trigger the reporting event.

Optionally, for the case that the execution condition configured on the network side does not carry TTT, the terminal only needs to consider that the execution condition is satisfied when detecting that the measurement result of the evaluation target is higher than the measurement result threshold condition set in the execution condition during evaluation.

Optionally, for the case that the execution condition configured at the network side carries TTT, the terminal evaluates the candidate PCell and the candidate PSCell corresponding to the candidate PCell according to the existing rule, that is, if and only if the measurement result of the evaluation target is higher than the measurement result threshold set in the execution condition in the TTT time, the terminal considers that the execution condition is satisfied.

Further, if and only if the execution conditions of the candidate PCell and its corresponding candidate PSCell are satisfied, the terminal accesses its candidate PCell and its corresponding candidate PSCell as a target cell.

In at least one embodiment of the present application, the method further comprises:

configuration information of the hysteresis timer;

Optionally, the configuration information of the hysteresis timer at least includes a duration setting of the hysteresis timer.

When the terminal in the embodiment of the application measures and evaluates, when the PCell meeting the execution condition is found, but the corresponding candidate PScell does not meet the execution condition; or otherwise, when the PScell meeting the execution condition is found, but when the corresponding candidate PCell does not meet the execution condition, a hysteresis timer is started to ensure that the execution conditions of the candidate PCell and the corresponding candidate PScell can be met at the same time, thereby improving the switching robustness and reliability.

Optionally, if the related information of the hysteresis timer is configured by the network, the network side device may carry the related information of the hysteresis timer through an RRC reconfiguration message or other signaling; the relevant information of the hysteresis timer and the conditional reconfiguration information in step 201 may be carried by one RRC reconfiguration message, or may be carried by different RRC reconfiguration messages, which is not specifically limited herein.

As an alternative embodiment, step 202 includes:

Optionally, during the running of the hysteresis timer, the terminal evaluates candidate pscells associated with the first candidate PCell, and the step of selecting one candidate PSCell as the target PSCell includes:

or,

Wherein the first rule includes at least one of:

selecting any one candidate PScell based on terminal implementation;

Optionally, the measurement quality value is determined based on a measurement quality indicator at a cell level, where the measurement quality indicator includes: RSRP (Reference Signal Received Power ), RSRQ (Reference Signal Received Quality, reference Signal received quality), RS-SINR (Reference Signal-to-noise and Interference Ratio, signal-to-interference-plus-noise ratio) and the like are not particularly limited. For example, if the measurement quality value is determined based on RSRP, the measurement quality value is the value of RSRP.

As another alternative embodiment, step 202 includes:

Optionally, during the running of the hysteresis timer, the terminal evaluates the candidate PCell associated with the first candidate PSCell, and the step of selecting one candidate PCell as the target PCell includes:

or,

Wherein the second rule includes at least one of:

selecting any one candidate PCell based on terminal implementation;

Optionally, if during the running of the hysteresis timer, the terminal evaluates and determines that the target PCell and the target PSCell of the corresponding execution condition are simultaneously satisfied, the terminal closes the hysteresis timer after determining the target PCell and the target PSCell.

As an alternative embodiment, the method further comprises:

In other words, during the running of the hysteresis timer, the terminal not only evaluates the candidate PSCell associated with the first candidate PCell that satisfies the first execution condition, but also performs measurement evaluation on other candidate pcells and their associated candidate pscells that do not satisfy the first execution condition; and/or the terminal not only evaluates the candidate PCell associated with the first candidate PSCell meeting the second execution condition, but also performs measurement evaluation on other candidate pscells and the candidate PCell associated therewith which do not meet the second execution condition.

Alternatively, as another alternative embodiment, the method further comprises:

In other words, during the hysteresis timer running, the terminal only evaluates candidate pscells associated with the first candidate PCell satisfying the first execution condition; and/or, the terminal only evaluates the candidate PCell associated with the first candidate PScell meeting the second execution condition.

Optionally, if during the running of the hysteresis timer, the terminal continues to perform measurement and evaluation on other candidate pcells that do not meet the first execution condition, and/or performs measurement and evaluation on other candidate pscells that do not meet the second execution condition, the method further includes:

This step can be understood as: if a certain candidate PCell and a corresponding candidate PScell thereof are found to simultaneously meet the corresponding execution conditions, the UE closes the hysteresis timer, takes the PCell which simultaneously meets the execution conditions as a target PCell and takes the associated PScell as a target PScell.

In at least one embodiment of the present application, the configuration granularity of the hysteresis timer is a first granularity, the first granularity including at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

Optionally, the first granularity is determined by a network configuration or a pre-agreement or terminal implementation. The following are illustrated:

if the hysteresis timer is configured based on PSCell (per PCell per PSCell) associated with each PCell, the terminal starts a respective hysteresis timer for each PSCell under each PCell;

if the hysteresis timer is configured based on each PCell (per PCell), the terminal starts one hysteresis timer for all pscells under each PCell;

if the hysteresis timer is configured on a per node basis, the terminal starts one hysteresis timer for all pscells under all pcells under one node;

if the hysteresis timer is configured based on each cell handover (per handover), the terminal starts one hysteresis timer for all pscells under all pcells;

if the hysteresis timer is configured based on each condition reconfiguration ID (per condition reconfiguration ID), the terminal starts a respective hysteresis timer for each PSCell under each PCell; the condition reconfiguration ID is the condition reconfiguration ID of the PSCell;

if the hysteresis timer is configured based on each condition reconfiguration ID (per condition reconfiguration ID), the terminal starts one hysteresis timer for all pscells under each PCell; the condition reconfiguration ID is a condition reconfiguration ID of the PCell.

As shown in fig. 3, an embodiment of the present application further provides an execution condition configuration method, where the method includes:

step 301, the network side device sends condition reconfiguration configuration information to the terminal, where the condition reconfiguration configuration information includes: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by one or more primary and secondary cells pscells.

The condition triggering reporting event corresponding to the first execution condition is: the conditions configured in the reporting configuration corresponding to the reporting configuration ID associated with the measurement identifier corresponding to the first execution condition trigger a reporting event;

configuration information of the hysteresis timer;

Optionally, the RRC reconfiguration message further carries the conditional reconfiguration configuration information.

In other words, in the case that the related information of the hysteresis timer is configured by the network, the network side device may carry the related information of the hysteresis timer through an RRC reconfiguration message or other signaling; the relevant information of the hysteresis timer and the conditional reconfiguration information may be carried by one RRC reconfiguration message, or may be carried by different RRC reconfiguration messages, which is not specifically limited herein.

As another alternative embodiment, the hysteresis timer is configured with a first granularity, the first granularity including at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

Optionally, if the hysteresis timer configured by the network is configured based on PSCell (per PCell per PSCell) associated with each PCell, the terminal starts a respective hysteresis timer for each PSCell under each PCell;

optionally, if the network configured hysteresis timer is configured based on each PCell (per PCell), the terminal starts a hysteresis timer for all pscells under each PCell;

Optionally, if the network configured hysteresis timer is configured on a per node (per node) basis, the terminal starts one hysteresis timer for all pscells under all pcells under one node;

optionally, if the hysteresis timer configured by the network is configured on a per cell handover (per handover) basis, the terminal starts one hysteresis timer for all pscells under all pcells;

optionally, if the hysteresis timer configured by the network is configured based on each condition reconfiguration ID (per condition reconfiguration ID), the terminal starts a respective hysteresis timer for each PSCell under each PCell; the condition reconfiguration ID is the condition reconfiguration ID of the PSCell;

optionally, if the hysteresis timer configured by the network is configured based on each condition reconfiguration ID (per condition reconfiguration ID), the terminal starts one hysteresis timer for all pscells under each PCell; the condition reconfiguration ID is a condition reconfiguration ID of the PCell.

In summary, in the embodiment of the present application, in a condition PCell handover scenario with multiple candidate pscells, a network side device configures an execution condition for each candidate PCell and its associated candidate PSCell, a terminal measures and evaluates candidate PCell and candidate PSCell pairs, and initiates access of a corresponding cell after evaluating and determining that a target PCell and its corresponding target PSCell meet the corresponding execution condition; therefore, the terminal can be ensured to select a proper PCell cell and a corresponding candidate PScell cell to be accessed, and switching robustness and reliability are improved.

In order to more clearly describe the cell access method and the execution condition configuration method provided in the embodiments of the present application, the following description is made with reference to several examples.

Example 1

Step 11, the network side issues an RRC reconfiguration message with one or more pieces of condition reconfiguration configuration information; the conditional reconfiguration configuration information comprises at least one of the following:

configuration information of PCell switching, configuration information added or changed by one PSCell, and configuration information related to execution conditions of the corresponding PCell and PSCell;

configuration information of PCell handover, configuration information of at least 2 PSCell additions or changes, and configuration information related to execution conditions of the corresponding PCell and PSCell.

The execution condition-related configuration information needs to satisfy at least one of:

if the execution condition is an execution condition (corresponding to a second execution condition) for the candidate PSCell, a condition configured in a reporting configuration corresponding to a reporting configuration id associated with a corresponding measId (measurement identifier) triggers a TTT configuration in a reporting event to be 0;

if the execution condition is an execution condition (corresponding to a second execution condition) aiming at the candidate PSCell, triggering a condition configured in the reporting configuration corresponding to the reporting configuration id associated with the corresponding measId to not configure a TTT in the reporting event;

If the execution condition is an execution condition (equivalent to a first execution condition) for the candidate PCell, the TTT configuration in the reporting configuration configured in the reporting configuration id associated with the corresponding measId needs to be at least greater than TTT1, where TTT1 is the longest TTT in the TTTs in the reporting event triggered by the corresponding condition in the execution conditions configured for the candidate PSCell corresponding to all the candidate pcells on the network side;

step 12, after receiving the RRC reconfiguration message, the terminal determines a measurement evaluation target of the execution condition of the condition reconfiguration in the configuration information related to the execution condition; performing measurement evaluation on the PCell cell and/or the PScell cell based on the execution condition of the condition reconfiguration of which the measurement evaluation target is the PCell and/or the execution condition of the condition reconfiguration of which the measurement evaluation target is the PScell;

specifically, at least one of the following acts is included:

aiming at the condition that TTT is not carried in the execution conditions configured by the network side, the UE only needs to consider that the execution conditions are met when detecting that the measurement result of the evaluation target is higher than the measurement result threshold conditions set in the execution conditions during evaluation;

aiming at the condition that TTT is configured on a network side, the terminal evaluates the candidate PCell and the corresponding candidate PScell according to a preset convention, and if and only if the execution conditions of the candidate PCell and the corresponding candidate PScell are met, the terminal accesses the candidate PCell and the corresponding candidate PScell as target cells (namely the target PCell and the target PScell).

Example 2

Step 21, the network side issues an RRC reconfiguration message with one or more pieces of condition reconfiguration configuration information; the conditional reconfiguration configuration information comprises at least one of the following:

The RRC reconfiguration message further includes information related to a hysteresis Timer (hysteresis Timer), where the information related to the hysteresis Timer includes at least one of the following:

configuration information of the Timer;

whether the starting Timer is supported;

the configuration of the hysteresis Timer can be per PCell per PSCell, or per PCell, or per conditional reconfiguration id, or per node, or per handover; take table 1 as an example:

TABLE 1 configuration of hysteresis Timer

Taking the case that the first execution condition of the PCell is satisfied first and the second execution condition of the corresponding PSCell is not satisfied as an example, the case that the scene "PSCell satisfies the second execution condition and the first execution condition of the corresponding PCell is not satisfied" is similar to the case that the first execution condition of the corresponding PCell is not satisfied;

If the terminal evaluates and finds that the first execution condition of the PCell is satisfied and the second execution condition of the corresponding PSCell is not satisfied, the terminal has the following different behaviors based on different delay Timer modes configured by the network side:

case 1: if the hysteresis Timer configured on the network side is per PCell per PSCell configured (per conditional reconfiguration id), the terminal starts a respective Timer for each PSCell under each PCell, and continues to perform the following actions of example 4;

case 2: if the hysteresis Timer configured on the network side is per PCell configuration (per condition reconfiguration id), the terminal starts one Timer for all pscells under each PCell, and continues to execute the following actions of example 4;

case 3: if the hysteresis Timer configured on the network side is configured by the per node, the terminal starts a Timer for all pscells under all the pcells under one node, and continues to execute the following actions of example 4;

case 4: if the hysteresis Timer configured on the network side is configured by per handover, the terminal starts a Timer for all pscells under all PCell, and continues to perform the following actions of example 4.

Example 3

In this case, the protocol agrees or the protocol standardizes configuration information of the hysteresis Timer (specifically, at least includes Timer duration setting), when the terminal side configures the PCell handover with the PSCell addition/change condition, and when the terminal evaluates that the first execution condition of the PCell is satisfied, and the second execution condition of the corresponding PSCell is not satisfied, the UE starts one hysteresis Timer for all pscells under all the PCell satisfying the first execution condition according to the hysteresis Timer configuration information of the protocol or the protocol. And performs the following actions of example 4.

Example 4

when the terminal evaluates and finds that the first execution condition of one or more candidate PCell is met and the corresponding candidate PSCell does not meet the second execution condition, the actions of the terminal include:

1) The terminal starts a hysteresis Timer, and the terminal cannot take the PCell as a target PCell during the running period of the hysteresis Timer;

2a) Optionally, after the UE starts the hysteresis Timer, the UE stops evaluating other candidate pcells and pscells that do not meet the execution condition;

2b) Optionally, after the UE starts the hysteresis Timer, the UE still continues to evaluate other candidate PCell and PSCell that do not meet the execution condition, if it finds that a certain candidate PCell and its corresponding candidate PSCell meet simultaneously, the UE closes the hysteresis Timer, and uses the PCell and PSCell that meet the condition simultaneously as the target cell;

3) The terminal needs to continuously evaluate candidate pscells associated with the candidate PCell satisfying the first execution condition, including any one of the following:

if the second execution condition of the candidate PSCell exists and is met in the hysteresis Timer period, the terminal takes the candidate PSCell meeting the second execution condition as a target PSCell, and a corresponding PCell cell meeting the first execution condition as a target PCell; then, the terminal closes the delay Timer;

if the execution condition of the candidate PSCell is not satisfied before the hysteresis Timer expires, the terminal forcedly selects one PSCell from the candidate pscells as a target PSCell, and uses a PCell associated with the PSCell and satisfying a first execution condition as the target PSCell; the manner in which the UE selects PSCell at this time may be:

selecting any one candidate PScell cell based on the terminal implementation;

The terminal selects a PScell cell with the best signal quality from the candidate PScell cells; the signal quality is best understood to be the highest measured quality value.

As shown in fig. 4, the embodiment of the present application further provides a terminal, including a memory 420, a transceiver 410, and a processor 400:

a memory 420 for storing a computer program; a transceiver 410 for transceiving data under the control of the processor 400; a processor 400 for reading the computer program in the memory 420 and performing the following operations:

As an alternative embodiment, the conditional reconfiguration configuration information satisfies at least one of:

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

configuration information of the hysteresis timer;

or,

As an alternative embodiment, the first rule includes at least one of:

selecting any one candidate PScell based on terminal implementation;

Or,

As an alternative embodiment, the second rule includes at least one of:

selecting any one candidate PCell based on terminal implementation;

As an alternative embodiment, the configuration granularity of the hysteresis timer is a first granularity, and the first granularity includes at least one of the following:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

Wherein in fig. 4, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 400 and various circuits of memory represented by memory 420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 410 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The user interface 430 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

Alternatively, the processor 400 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multicore architecture.

The processor is configured to execute any of the methods provided in the embodiments of the present application by invoking a computer program stored in a memory in accordance with the obtained executable instructions. The processor and the memory may also be physically separate.

In the embodiment of the application, for a condition PCell switching scenario with a plurality of candidate pscells, a network side device configures execution conditions for each candidate PCell and its associated candidate PSCell respectively, a terminal performs measurement evaluation on candidate PCell and candidate PSCell pairs respectively, and initiates access of a corresponding cell after evaluation determines that a target PCell and its corresponding target PSCell meet the corresponding execution conditions; therefore, the terminal can be ensured to select a proper PCell cell and a corresponding candidate PScell cell to be accessed, and switching robustness and reliability are improved.

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

As shown in fig. 5, an embodiment of the present application further provides a terminal, including:

a receiving unit 501, configured to receive conditional reconfiguration configuration information sent by a network side device, where the conditional reconfiguration configuration information includes: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PScell;

an evaluation determining unit 502, configured to perform measurement evaluation on the PCell and the PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determine a corresponding target PCell and a target PSCell;

an access initiation unit 503, configured to initiate access of a corresponding cell according to the determined target PCell and target PSCell.

As an alternative embodiment, the terminal further comprises:

the first determining unit is configured to determine, according to network configuration or a preset agreement or terminal implementation, relevant information of a hysteresis timer, where the relevant information of the hysteresis timer includes at least one of the following:

configuration information of the hysteresis timer;

As an alternative embodiment, the evaluation determination unit is further adapted to:

starting a hysteresis timer when the evaluation determines that at least one first candidate PCell meeting the first execution condition exists and a candidate PSCell corresponding to the first candidate PCell does not meet the second execution condition;

or,

As an alternative embodiment, the first rule includes at least one of:

selecting any one candidate PScell based on terminal implementation;

or,

As an alternative embodiment, the second rule includes at least one of:

selecting any one candidate PCell based on terminal implementation;

As an alternative embodiment, the terminal further comprises:

and the closing unit is used for closing the hysteresis timer after the terminal determines the target PCell and the target PScell.

As an alternative embodiment, the terminal further comprises:

and the measurement evaluation unit is used for continuing to perform measurement evaluation on other candidate PCells which do not meet the first execution condition and/or performing measurement evaluation on other candidate PScells which do not meet the second execution condition during the running period of the hysteresis timer.

As an alternative embodiment, the terminal further comprises:

and a second determining unit, configured to determine, if there is a candidate PCell that satisfies a first execution condition and a candidate PSCell corresponding to the candidate PCell that satisfies the first execution condition also satisfies a second execution condition, that the candidate PCell that satisfies the first execution condition is a target PCell and that a candidate PSCell associated with the target PCell that satisfies the second execution condition is a target PSCell.

As an alternative embodiment, the terminal further comprises:

and the stopping unit is used for stopping measurement and evaluation of other candidate PCells which do not meet the first execution condition and/or stopping measurement and evaluation of other candidate PScells which do not meet the second execution condition during the running of the hysteresis timer.

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

As shown in fig. 6, the embodiment of the present application further provides a network side device, including a memory 620, a transceiver 610, and a processor 600:

a memory 620 for storing a computer program; a transceiver 610 for transceiving data under the control of the processor 600; a processor 600 for reading the computer program in the memory 620 and performing the following operations:

configuration information of the hysteresis timer;

As an alternative embodiment, the RRC reconfiguration message also carries the conditional reconfiguration configuration information.

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The processor 600 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

It should be noted that, the network side device provided in the embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and specific details of the same parts and beneficial effects as those of the method embodiment in the embodiment are not described herein.

As shown in fig. 7, an embodiment of the present application further provides a network side device, including:

a sending unit 701, configured to send, to a terminal, condition reconfiguration configuration information, where the condition reconfiguration configuration information includes: configuration information of a first execution condition of primary cell PCell handover and configuration information of a second execution condition added or changed by primary and secondary cells PSCell.

As an optional embodiment, the network side device further includes:

a message sending unit, configured to send a radio resource control RRC reconfiguration message to the terminal, where the RRC reconfiguration message carries information related to the hysteresis timer; the relevant information of the hysteresis timer comprises at least one of the following:

Configuration information of the hysteresis timer;

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The present application also provides a processor-readable storage medium storing a computer program for causing the processor to perform the steps in the method embodiments described above; the processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of cell access, the method comprising:

2. The method of claim 1, wherein the conditional reconfiguration configuration information satisfies at least one of:

3. The method according to claim 1, wherein the method further comprises:

configuration information of the hysteresis timer;

4. The method of claim 3, wherein performing measurement evaluation on the PCell and the PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determining the corresponding target PCell and the target PSCell comprises:

5. The method of claim 4, wherein during the hysteresis timer running, the terminal evaluates candidate pscells associated with the first candidate PCell and selects one candidate PSCell as a target PSCell, comprising:

or,

6. The method of claim 5, wherein the first rule comprises at least one of:

selecting any one candidate PScell based on terminal implementation;

7. The method of claim 3, wherein performing measurement evaluation on the PCell and the PSCell according to the configuration information of the first execution condition and the configuration information of the second execution condition, and determining the corresponding target PCell and the target PSCell comprises:

8. The method of claim 7, wherein during the hysteresis timer running, the terminal evaluates candidate pcells associated with the first candidate PSCell, selecting one candidate PCell as a target PCell, comprising:

or,

9. The method of claim 8, wherein the second rule comprises at least one of:

selecting any one candidate PCell based on terminal implementation;

10. The method according to claim 4 or 7, characterized in that the method further comprises:

11. The method according to claim 4 or 7, characterized in that the method further comprises:

12. The method of claim 11, wherein the method further comprises:

13. The method according to claim 4 or 7, characterized in that the method further comprises:

14. The method of claim 4 or 7, wherein the configuration granularity of the hysteresis timer is a first granularity, the first granularity comprising at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

15. An execution condition configuration method, the method comprising:

16. The method of claim 15, wherein the conditional reconfiguration configuration information satisfies at least one of:

17. The method of claim 15, wherein the method further comprises:

configuration information of the hysteresis timer;

18. The method of claim 17, wherein the RRC reconfiguration message also carries the conditional reconfiguration configuration information.

19. The method of claim 17 or 18, wherein the hysteresis timer is configured with a granularity of a first granularity, the first granularity comprising at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

20. A terminal comprising a memory, a transceiver, and a processor:

21. The terminal of claim 20, wherein the conditional reconfiguration configuration information satisfies at least one of:

22. The terminal of claim 20, wherein the processor is further configured to read the computer program in the memory and perform the following:

configuration information of the hysteresis timer;

23. The terminal of claim 22, wherein the processor is further configured to read the computer program in the memory and perform the following:

24. The terminal of claim 23, wherein the processor is further configured to read the computer program in the memory and perform the following:

or,

25. The terminal of claim 24, wherein the first rule comprises at least one of:

Selecting any one candidate PScell based on terminal implementation;

26. The terminal of claim 22, wherein the processor is further configured to read the computer program in the memory and perform the following:

27. The terminal of claim 26, wherein the processor is further configured to read the computer program in the memory and perform the following:

or,

28. The terminal of claim 27, wherein the second rule comprises at least one of:

selecting any one candidate PCell based on terminal implementation;

29. The terminal according to claim 23 or 26, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

30. The terminal according to claim 23 or 26, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

31. The terminal of claim 30, wherein the processor is further configured to read the computer program in the memory and perform the following:

32. The terminal according to claim 23 or 26, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

33. The terminal according to claim 23 or 26, wherein the hysteresis timer is configured with a granularity of a first granularity; the first granularity includes at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

Each cell handover;

each node.

34. A terminal, comprising:

35. A network side device, comprising a memory, a transceiver, and a processor:

36. The network-side device of claim 35, wherein the conditional reconfiguration configuration information satisfies at least one of:

37. The network-side device of claim 35, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

configuration information of the hysteresis timer;

38. The network side device of claim 37, wherein the RRC reconfiguration message further carries the conditional reconfiguration configuration information.

39. The network-side device of claim 37 or 38, wherein the hysteresis timer is configured with a granularity of a first granularity, the first granularity comprising at least one of:

each PCell;

PSCell associated with each PCell;

each condition is reassigned with an ID;

each cell handover;

each node.

40. A network side device, comprising:

41. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 14 or for causing the processor to perform the method of any one of claims 15 to 19.