CN117676735A

CN117676735A - Target cell selection method, configuration method, information transmission method and equipment

Info

Publication number: CN117676735A
Application number: CN202211049433.7A
Authority: CN
Inventors: 张不方
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: WO2024046092A1

Abstract

The application provides a target cell selection method, a configuration method, an information transmission method and equipment, wherein the method comprises the following steps: the method comprises the steps that a terminal receives conditional reconfiguration configuration information sent by first network equipment, wherein the conditional reconfiguration configuration information comprises execution conditional configuration information of PCell switching; the terminal performs measurement and evaluation on the candidate PCell according to the execution condition configuration information of PCell switching, and determines a candidate PCell set meeting the execution condition, wherein the candidate PCell set comprises at least one candidate PCell; the terminal determines a target PCell and a target PScell according to a candidate PCell set and a PScell set associated with the candidate PCell set; therefore, the terminal is ensured to select a proper PCell cell and a corresponding candidate PScell cell to be accessed, and the switching robustness and reliability are improved.

Description

Target cell selection method, configuration method, information transmission method and equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for selecting, configuring, and transmitting a target cell, and an information transmission method and 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 application is to provide a method for selecting, configuring, and transmitting information of a target cell, 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 method for selecting a target cell, the method including:

the method comprises the steps that a terminal receives conditional reconfiguration configuration information sent by first network equipment, wherein the conditional reconfiguration configuration information comprises execution conditional configuration information of PCell switching of a main cell;

the terminal performs measurement and evaluation on the candidate PCell according to the execution condition configuration information of PCell switching, and determines a candidate PCell set meeting the execution condition, wherein the candidate PCell set comprises at least one candidate PCell;

and the terminal determines a target PCell and a target PScell according to the candidate PCell set and the candidate primary and secondary cell PScell set associated with the candidate PCell set.

Wherein, in case that the candidate PCell set includes one candidate PCell,

the terminal determines a target PCell and a target PSCell according to a candidate PCell set and a candidate primary and secondary cell PSCell set associated with the candidate PCell set, including:

the terminal takes one candidate PCell included in the candidate PCell set as the target PCell;

and the terminal selects one candidate PScell from the candidate PScell set associated with the candidate PCell set according to a first rule as the target PScell.

Wherein, in case the set of candidate PCell comprises at least two candidate PCell,

the terminal selects one candidate PScell from the candidate PScell set associated with the candidate PCell set according to a first rule as the target PScell;

and the terminal selects the candidate PCell associated with the target PSCell from the candidate PCell set as the target PCell.

Wherein the first rule includes any one of:

selecting a candidate PScell with the highest measurement quality value from the candidate PScell set as the target PScell;

selecting any one candidate PScell with the radio resource management RRM measurement result larger than a first RRM threshold from the candidate PScell set as the target PScell;

selecting a candidate PSCell of the highest network preference level from the set of candidate pscells as the target PSCell;

selecting a candidate PSCell in the preference cell information indicated by the network as the target PSCell, wherein the RRM measurement result is greater than a second RRM threshold from the candidate PSCell set;

And selecting a candidate PScell with the highest access priority from the candidate PScell set as the target PScell.

Wherein the method further comprises:

and the terminal determines the network preference level of the candidate PScell according to the preference cell information indicated by the network.

If the RRM measurement result in the candidate PSCell set is greater than the second RRM threshold, and the number of candidate pscells in the preference cell information indicated by the network is greater than 2, the first rule further includes:

selecting a candidate PSCell with the highest measurement quality value from at least 2 candidate pscells as the target PSCell;

or,

selecting a candidate PSCell with the highest network preference level from at least 2 candidate pscells as the target PSCell;

or,

any one candidate PSCell cell is selected from at least 2 candidate pscells as the target PSCell.

Wherein the method further comprises:

the terminal determines the access priority of each candidate PScell in the candidate PScell set according to a first formula; the first formula is:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

wherein P_i represents the access priority of the candidate PSCell i; x1 is a weight factor; RRM_result is the sequence number of the candidate PSCell i in the candidate PSCell set, which is ordered from high to low according to the RRM measurement result; p_nw_reference is the network preference level of the candidate PSCell i.

Wherein the method further comprises:

the terminal determines the first rule according to a preset rule;

or,

the terminal determines the first rule according to terminal implementation;

or,

the terminal determines the first rule according to first information sent by the first network device;

or,

the terminal receives the first rule sent by the first network device.

Wherein the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

the method comprises the steps that an instruction terminal selects a candidate PScell with the highest measurement quality value as first instruction information of a target PScell;

the terminal is instructed to select candidate PSCells meeting the first RRM threshold or the second RRM threshold as second instruction information of the target PSCell;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

preference cell information indicating network preference levels of a plurality of candidate pscells.

Wherein the method further comprises:

the terminal receives a broadcast message or a dedicated Radio Resource Control (RRC) message sent by first network equipment; the broadcast message or dedicated RRC message carries the first information or the first rule.

The terminal receives the conditional reconfiguration configuration information through a first RRC message carrying the conditional reconfiguration configuration information;

the first RRC message also carries the first information or the first rule.

Wherein the first information or the first rule is configured based on each candidate PCell; or,

the first information or the first rule is configured based on each PSCell associated with each candidate PCell; or,

the first information or the first rule is configured based on each condition reconfiguration ID; or,

the first information or the first rule is configured on a per cell handover basis; or,

the first information or the first rule is configured on a per node basis.

Wherein the preference cell information includes at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

Wherein, the number of the candidate PSCell in the corresponding candidate PSCell set is used to implicitly indicate the network preference level of the candidate PSCell;

wherein the size of the number is inversely proportional or directly proportional to the level of the network preference.

Wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

and (3) a weight factor for calculating the access priority of the candidate PScell.

The embodiment of the application also provides a configuration method for selecting the target cell, which comprises the following steps:

the first network device sends condition reconfiguration configuration information to the terminal, wherein the condition reconfiguration configuration information comprises execution condition configuration information of primary cell PCell switching.

Wherein the method further comprises:

the first network equipment sends first information or first rules to the terminal;

the first information is used for assisting the terminal to select a target primary and secondary cell PScell; the first rule is a rule for selecting a target PScell for the terminal.

Wherein the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

A second RRM threshold for selecting a target PSCell;

The first network device sends first information or a first rule of conditions to the terminal, and the first network device comprises:

the first network device sends a broadcast message or a dedicated Radio Resource Control (RRC) message to the terminal; the broadcast message or dedicated RRC message carries the first information or first rule.

The first network device sends the condition reconfiguration information and the first information to the terminal, and the method comprises the following steps:

the first network device sends a first RRC message to the terminal, wherein the first RRC message carries the conditional reconfiguration configuration information, and the first RRC message also carries the first information or the first rule.

The first information or the first rule is configured on a per node basis.

Wherein the preference cell information includes at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

Wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

Wherein the method further comprises:

the first network device generating the first information or first rule;

or,

the first network device receives the first information or the first rule sent by the second network device.

Wherein the first network device generates the first information or first rule, including:

the first network device independently generates the first information or first rule;

Or,

the first network device generates the first information or the first rule according to the auxiliary information sent by the second network device.

Wherein the auxiliary information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

preference cell information indicating network preference levels of a plurality of candidate pscells;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

Wherein the assistance information is configured based on each candidate PCell; or,

the assistance information is configured based on each PSCell associated with each candidate PCell; or,

the auxiliary information is configured on a per node basis.

The embodiment of the application also provides an information transmission method, which comprises the following steps:

the second network equipment sends auxiliary information to the first network equipment, wherein the auxiliary information is used for assisting the first network equipment to generate first information or determining a first rule;

The first rule is a rule for selecting the target PSCell by the terminal.

Wherein the auxiliary information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

the auxiliary information is configured on a per node basis.

Wherein the first information includes at least one of:

identification information of the candidate PCell;

Identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

Wherein the first rule includes any one of:

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 condition reconfiguration configuration information sent by first network equipment, wherein the condition reconfiguration configuration information comprises execution condition configuration information of PCell switching of a main cell;

measuring and evaluating the candidate PCell according to the execution condition configuration information of PCell switching, and determining a candidate PCell set meeting the execution condition, wherein the candidate PCell set comprises at least one candidate PCell;

and determining a target PCell and a target PScell according to the candidate PCell set and a candidate primary and secondary cell PScell set associated with the candidate PCell set.

Wherein, in case the set of candidate PCell includes one candidate PCell, the processor is further configured to read a computer program in the memory and perform the following operations:

taking one candidate PCell included in the candidate PCell set as the target PCell;

and selecting one candidate PScell from the candidate PScell set associated with the candidate PCell set according to a first rule as the target PScell.

Wherein, in case the set of candidate pcells comprises at least two candidate pcells, the processor is further adapted to read a computer program in the memory and to perform the following operations:

selecting one candidate PSCell from the candidate PSCell set associated with the candidate PCell set according to a first rule as the target PSCell;

and selecting the candidate PCell associated with the target PSCell from the candidate PCell set as the target PCell.

Wherein the first rule includes any one of:

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

and determining the network preference level of the candidate PScell according to the preference cell information indicated by the network.

or,

determining access priority of each candidate PScell in the candidate PScell set according to a first formula; the first formula is:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

determining the first rule according to a preset rule;

or,

determining the first rule according to terminal implementation;

or,

determining the first rule according to first information sent by the first network equipment;

or,

and receiving the first rule sent by the first network equipment.

Wherein the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

receiving a broadcast message or a dedicated Radio Resource Control (RRC) message sent by first network equipment; the broadcast message or dedicated RRC message carries the first information or the first rule.

the first RRC message also carries the first information or the first rule.

the first information or the first rule is configured on a per node basis, wherein the preferred cell information comprises at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

Wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

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

a first receiving unit, configured to receive conditional reconfiguration configuration information sent by a first network device, where the conditional reconfiguration configuration information includes execution conditional configuration information of PCell handover of a primary cell;

a first determining unit, configured to perform measurement and evaluation on candidate PCell according to the execution condition configuration information of PCell handover, and determine a candidate PCell set that satisfies an execution condition, where the candidate PCell set includes at least one candidate PCell;

and the second determining unit is used for determining the target PCell and the target PScell according to the candidate PCell set and the candidate primary and secondary cell PScell set associated with the candidate PCell set.

The embodiment of the application also provides a network device, which is a first network device, and includes 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 execution condition configuration information of the PCell switching of the main cell.

sending first information or a first rule to a terminal;

Wherein the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

Sending a broadcast message or a dedicated Radio Resource Control (RRC) message to the terminal; the broadcast message or dedicated RRC message carries the first information or first rule.

and sending a first RRC message to the terminal, wherein the first RRC message carries the conditional reconfiguration configuration information, and the first RRC message also carries the first information or the first rule.

the first information or the first rule is configured on a per node basis.

Wherein the preference cell information includes at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

Wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

generating the first information or a first rule;

or,

and receiving the first information or the first rule sent by the second network equipment.

independently generating the first information or the first rule;

or,

and generating the first information or the first rule according to the auxiliary information sent by the second network equipment.

Wherein the auxiliary information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

the auxiliary information is configured on a per node basis.

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

a first sending unit, configured to send, to a terminal, condition reconfiguration configuration information, where the condition reconfiguration configuration information includes execution condition configuration information of PCell handover of a primary cell.

The embodiment of the application also provides a network device, which is a second network device, and includes a memory, a transceiver, and a processor:

Transmitting auxiliary information to a first network device, wherein the auxiliary information is used for assisting the first network device to generate first information or determining a first rule;

the first rule is a rule for selecting the target PSCell by the terminal.

Wherein the auxiliary information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

The auxiliary information is configured on a per node basis.

Wherein the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

Wherein the first rule includes any one of:

a second sending unit, configured to send auxiliary information to a first network device, where the auxiliary information is used to assist the first network device to generate first information or determine a first rule;

the first rule is a rule for selecting the target PSCell by the terminal.

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 present application, under the condition of PCell handover with candidate PSCell, the network side configures a corresponding execution condition for the PCell, the terminal determines the candidate PCell meeting the execution condition according to the execution condition of the PCell configured by the network, and then selects the target PCell and the target PSCell for access according to the PSCell associated with the candidate PCell, thereby ensuring that the terminal selects a suitable PCell cell and a corresponding candidate PSCell for access, and improving handover robustness and reliability.

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 method for selecting a target cell according to an embodiment of the present application;

fig. 3 is a flowchart illustrating steps of a configuration method for selecting a target cell according to an embodiment of the present application;

fig. 4 is a flowchart illustrating steps of an information transmission method according to an embodiment of the present application;

fig. 5 shows one of schematic structural diagrams of a terminal provided in an embodiment of the present application;

FIG. 6 is a second schematic diagram of a terminal according to an embodiment of the present disclosure;

fig. 7 shows one of schematic structural diagrams of a network device according to an embodiment of the present application;

fig. 8 shows a second schematic structural diagram of a network device according to an embodiment of the present application;

fig. 9 shows a third schematic structural diagram of a network device according to an embodiment of the present application;

fig. 10 shows a fourth schematic structural diagram of a network 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 provides a method for selecting a target cell, where the method includes:

step 201, a terminal receives conditional reconfiguration configuration information sent by a first network device, where the conditional reconfiguration configuration information includes execution condition configuration information of primary cell PCell handover;

alternatively, the first network device may carry one or more of the conditional reconfiguration configuration information through an RRC reconfiguration message. The execution condition configuration information through PCell handover in the condition reconfiguration configuration information configures an execution condition for each PCell.

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; the specific content of the configuration information is not limited in the present application.

Step 202, the terminal performs measurement and evaluation on candidate PCell according to the execution condition configuration information of PCell handover, and determines a candidate PCell set meeting the execution condition, where the candidate PCell set includes at least one candidate PCell;

in step 203, the terminal determines a target PCell and a target PSCell according to the candidate PCell set and the candidate primary and secondary cell PSCell set associated with the candidate PCell set.

As an alternative embodiment, when determining that the set of candidate PCell satisfying the execution condition includes 1 candidate PCell, the terminal selects the candidate PCell as a target PCell, and further selects a corresponding target PSCell among the set of candidate pscells with which the target PCell is associated. That is, in case the set of candidate PCell includes one candidate PCell, step 203 includes:

In this embodiment, the candidate PSCell set may be understood as all candidate pscells associated with 1 candidate PCell satisfying the execution condition.

As another alternative embodiment, after determining that the set of candidate PCell satisfying the execution condition includes at least 2 candidate PCell, the set of candidate PCell satisfying the execution condition cannot be directly used as the target PCell, and the set of candidate primary and secondary cells PSCell associated with the set of candidate PCell needs to be referred to finally determine the target PCell and the target PSCell. That is, in case the set of candidate PCell includes at least two candidate PCell, step 203 includes:

In this embodiment, the candidate PSCell set may be understood as all candidate pscells associated with all candidate pcells in the candidate PCell set that satisfy the execution condition.

In at least one embodiment of the present application, the first rule includes any one of:

Selecting a candidate PSCell of the highest network preference level from the set of candidate pscells as the target PSCell; optionally, the network preference level is determined by the terminal according to the preferred cell information indicated by the network side (which may be indicated by a list form, such as preferred cell list);

Optionally, the measurement quality value is determined based on a measurement quality indicator at a cell level, where the measurement quality value 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.

Alternatively, the first RRM threshold and the second RRM threshold may be the same or different, which is not specifically limited herein.

Correspondingly, the method further comprises the steps of:

And the terminal determines the network preference level of the candidate PScell according to the preference cell information indicated by the network. The preferred cell information may be specifically indicated by a list, for example, a preferred cell list (preferred cell list), and preferred cell list includes information about a plurality of pscells.

Optionally, before the terminal determines the network preference level of the candidate PSCell according to the preference cell information indicated by the network, the terminal further needs to determine whether there is a candidate PSCell in the candidate PSCell set in preferred cell list, and if so, the terminal can determine the network preference level of the candidate PSCell according to preferred cell list; if not, the terminal may determine the network preference level of the candidate PSCell in other ways. For example, the terminal considers that cells in network provided preferred cell list have a high network preference ranking, while cells not in network provided preferred cell list have a low network preference ranking.

As an optional embodiment, if the RRM measurement result in the candidate PSCell set is greater than the second RRM threshold and the number of candidate pscells in the preference cell information indicated by the network is greater than 2, the first rule further includes:

or,

As another alternative embodiment, the method further comprises:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

wherein P_i represents the access priority of the candidate PSCell i; x1 is a weight factor; RRM_result is the sequence number of the candidate PSCell i in the candidate PSCell set, which is ordered from high to low according to the RRM measurement result; p_nw_reference is the network preference level of the candidate PSCell i; i is the number or index of the candidate PSCell.

Optionally, the weight factor x1 may be determined by the terminal according to an algorithm, or may be indicated by the network side, or may be predetermined by a protocol, which is not limited herein.

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

the terminal determines the first rule according to a preset rule;

or,

the terminal determines the first rule according to terminal implementation;

or,

the terminal receives the first rule sent by the first network device.

Wherein the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

Optionally, the preference cell information is determined by the network side according to the load condition of each cell.

In an alternative embodiment, the method further comprises:

In another embodiment, the terminal receives the conditional reconfiguration configuration information through a first RRC message carrying the conditional reconfiguration configuration information;

the first RRC message also carries the first information or the first rule.

In other words, in the embodiment of the present application, the first network device may send the "conditional reconfiguration configuration information" and the "first information or the first rule" simultaneously through the first RRC message; or, the first network device may send "the condition reconfiguration configuration information" and "the first information or the first rule" respectively through different messages; the transmission order of the above information is not limited in this application.

In at least one embodiment of the present application, the configuration granularity of the first information or the first rule includes at least one of:

the first information or the first rule is configured based on each candidate PCell; the terminal adopts a first information or a first rule for all candidate pscells under a candidate PCell;

Alternatively, the first information or the first rule is configured based on each PSCell associated with each candidate PCell; the terminal adopts a first information or a first rule for each candidate PSCell under a candidate PCell;

alternatively, the first information or the first rule is configured based on each condition reconfiguration ID; the terminal adopts a first information or a first rule for all candidate pscells under all candidate pcells corresponding to a conditional reconfiguration ID;

alternatively, the first information or the first rule is configured on a per cell handover basis; the terminal adopts a first information or a first rule for all candidate pscells under all pcells;

alternatively, the first information or the first rule is configured on a per node basis; the terminal adopts one first information or one first rule for all candidate pscells under all pcells under one node.

In at least one embodiment of the present application, the preferred cell information includes at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells; the cell index is obtained by each candidate PCell for a plurality of associated candidate PSCell numbers;

The number of a candidate PSCell in the corresponding candidate PSCell set may also be understood as the number of a candidate PSCell in the candidate PSCell set with which its associated candidate PCell is associated.

Optionally, the number of the candidate PSCell in the corresponding candidate PSCell set is used to implicitly indicate the network preference level of the candidate PSCell;

For example, the list numbering order in preferred cell list implicitly indicates the network preference ranking for that cell, i.e., from list number 0 for the cell with the highest network preference ranking, 1 for the next, and so on; alternatively, from list number 0 corresponds to the cell with the lowest network preference level, 1 represents the next, and so on.

Further optionally, the preference cell information further includes at least one of:

network preference level identification corresponding to each candidate PScell; the network preference level identification indicates a network preference level of a corresponding candidate PSCell;

a weight factor x1 for calculating access priority of candidate pscells.

In summary, in the embodiment of the present application, under the condition of the PCell handover with the candidate PSCell, the network side configures a corresponding execution condition for the PCell, the terminal determines the candidate PCell meeting the execution condition according to the execution condition of the PCell configured by the network, and then selects the target PCell and the target PSCell for access according to the PSCell associated with the candidate PCell, thereby ensuring that the terminal selects a suitable PCell cell and a corresponding candidate PSCell cell for access, and improving handover robustness and reliability.

As shown in fig. 3, the embodiment of the present application further provides a configuration method for selecting a target cell, including:

in step 301, the first network device sends, to the terminal, condition reconfiguration configuration information, where the condition reconfiguration configuration information includes execution condition configuration information of a PCell handover of the primary cell.

the first information is used for assisting the terminal to select a target primary and secondary cell PScell; the first rule is a rule for selecting a target PScell for the terminal. Optionally, the first information corresponds to an implicit indication or an indirect indication of the first rule.

Optionally, the first information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

In an alternative embodiment, the first network device sends the first information or the first rule to the terminal, including:

In another embodiment, the first network device sends the condition reconfiguration information and the first information to the terminal, including:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

a weight factor x1 for calculating access priority of candidate pscells.

the first network device generating the first information or first rule;

or,

the first network device receives the first information or the first rule sent by the second network device. For example, the second network device generates first information or first rules and communicates to the first network device via the inter-node interface.

Alternatively, the first network device may be a source home node (S-MN) of the terminal, and the second network device may be a target home node (T-MN) of the terminal, which is not specifically limited herein.

Optionally, the first network device generates the first information or the first rule, including:

or,

In one embodiment, the second network device provides the auxiliary information or the first rule directly carried in the Xn interface message to the first network device; in another embodiment, the second network device provides the assistance information or the first rule to the first network device carried in an RRC container (inter-node RRC container) of the interaction node.

As an alternative embodiment, the auxiliary information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

Wherein the assistance information is configured based on each candidate PCell; the first network device determines a selection rule of all candidate pscells under each candidate PCell for the assistance information of each candidate PCell;

Alternatively, the assistance information is configured based on each PSCell with which each candidate PCell is associated; the first network device determines a selection rule for each candidate PSCell for the assistance information of each candidate PSCell;

alternatively, the auxiliary information is configured on a per node basis; the first network device determines a selection rule of all candidate pscells of all candidate pcells under each node for the assistance information of each node.

As shown in fig. 4, an embodiment of the present application further provides an information transmission method, where the method includes:

The first rule is a rule for selecting the target PSCell by the terminal. Optionally, the first information corresponds to an implicit indication or an indirect indication of the first rule.

Optionally, the information transmission method further includes: the second network device generates first information or first rules and communicates to the first network device via the inter-node interface.

Optionally, the auxiliary information includes at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

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

Identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

preference cell information indicating network preference levels of a plurality of candidate pscells. Optionally, the preference cell information is determined by the network side according to the load condition of each cell.

As another alternative embodiment, the first rule includes any one of:

In order to more clearly describe the selection method, the configuration method and the information transmission method of the target cell provided by the embodiment of the application, the following description is made with reference to several examples.

Example 1

Protocol-specified access rules include the following two cases:

case 1: the protocol defaults to stipulate, in the condition PCell switching scene with PSCell adding or changing, the terminal always selects PCell cells meeting the execution condition, and the PSCell cell with highest measurement quality value in the candidate PSCell cells associated with the candidate PCell cells is accessed;

case 2: the protocol defaults to stipulate that in a PCell switching scene with a PSCell adding or changing condition, a terminal always selects a PSCell cell access with the highest measurement quality value from candidate PSCell cells associated with PCell cells meeting an execution condition, and the candidate PCell access corresponding to the PSCell cell;

when the network side configures the PCell switching with the PSCell adding or changing condition for the terminal, the terminal evaluates the execution condition of the candidate PCell according to the principle specified by the protocol, and selects the target PSCell and the target PCell to be finally accessed based on the principle.

Example 2

Mode one: the network side issues a conditional PCell switching configuration message with PSCell addition or change, wherein the switching configuration message comprises first information for assisting a terminal to select a target PSCell cell;

Embodiment 1-1: per conditional reconfiguration of first information

Step 1: the network side configures the terminal with the PCell switching configuration information with the PSCell added or changed condition, wherein the configuration information comprises one or at least one 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 PCell;

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

the first information.

The first information comprises at least one of the following items:

the indication terminal always selects the PScell with the highest measurement quality value for access;

indicating the terminal to select a PSCell cell which meets the RRM Threshold threshold_1 to access;

RRM threshold_1;

preferred cell list, the preferred cell list is determined by the network according to the load condition of each cell, etc.

Embodiments 1 to 2: per Handover configuration first information

Step 1: the network side configures the terminal with the PCell switching configuration information with the PSCell added or changed condition, wherein the configuration information comprises one or at least one condition reconfiguration configuration information and first information;

The first information comprises at least one of the following items:

indicating UE always to select a PScell with the highest measurement quality value for access;

instructing the UE to select a PScell cell which meets the RRM Threshold threshold_1 for access;

RRM threshold_1;

Mode two: the network side firstly transmits a conditional PCell switching configuration message with PSCell addition or change, and then transmits first information for assisting the UE to select a target PSCell cell in a broadcasting mode;

step 1: the network side configures the terminal with the PCell switching configuration information with the PSCell added or changed condition, wherein the configuration information comprises one or at least one condition reconfiguration configuration information;

step 2: the network side transmits a broadcast message, wherein the broadcast message carries first information which provides information for assisting the UE to select a target PScell cell; the first information carries at least one of the following:

a condition reconfiguration configuration id;

RRM threshold_1;

Mode three: the network side firstly transmits a conditional PCell switching configuration message with PSCell addition or change, and then transmits first information of an auxiliary terminal selection target PSCell cell through a special RRC message;

step 2: the network side transmits a special RRC message, wherein the special RRC message carries first information which provides information for assisting the UE to select a target PScell cell; the first information carries at least one of the following:

a condition reconfiguration configuration id;

RRM threshold_1;

Example 3

The configuration mode of the first information comprises at least one of the following:

per PCell configured;

per PCell per PSCell configured;

the per condition is reconfigured;

per switch configuration;

a per node configuration;

for example, in table 1, the network side configures a candidate PCell cell PCell p_1,PCell P_2,PCell P_3 for the terminal and a corresponding candidate PSCell cell PSCell ps_1,PSCell PS_2,PSCell PS_3,PSCell PS_4, and configures corresponding execution conditions only for the candidate PCell cell in each condition reconfiguration id.

The manner in which the network side provides the first information may be at least one of:

per PCell per PSCell configuration;

per PCell configured;

the per condition is reconfigured with id configuration;

a per node configuration;

per switch configuration.

Table 1, configuration of the first information

Example 4

Embodiment one: S-MN generates the first information based on the auxiliary information provided by T-MN

Step 1: the T-MN determines candidate PCell cells, candidate PSCell cells associated with each candidate PCell cell, and corresponding reconfiguration messages containing the PCell and the candidate PSCell associated with the PCell cell;

meanwhile, the T-MN determines the auxiliary information, wherein the auxiliary information can be at least one of the following:

per PCell per PSCell configuration;

per PCell configured;

a per node configuration;

for the case of the per PCell per PSCell configuration described above, the auxiliary information includes at least one of:

candidate PCell information identification;

candidate PSCell information identification;

RRM threshold_1;

network preference level identification of the corresponding candidate PSCell cell.

For the case of the above-described per PCell configuration, the assistance information includes at least one of:

candidate PCell information identification;

RRM threshold_1;

preferred cell list, the preferred cell list is determined by the network side according to the load condition of each cell, and the preferred cell list includes network preference information corresponding to a candidate PSCell cell associated with the candidate PCell;

network preference level identification of candidate PSCell cells with which the candidate PCell is associated.

For the above-described per node configuration case, the auxiliary information includes at least one of:

RRM threshold_1;

and the network preference level identification of the candidate PScell cell associated with the candidate PCell.

Step 2: the T-MN feeds back the above information to the S-MN through a handover request feedback message, where the above information may be directly included in the handover request feedback message or in the RRC container included in the handover request feedback message.

Embodiment two: the T-MN directly generates first information and directly transmits the first information to the S-MN;

meanwhile, the T-MN determines first information, which may be at least one of:

per PCell per PSCell configuration;

per PCell configured;

a per node configuration;

the content contained in the first information refers to the description in the first embodiment in this example.

Example 6

The preferred cell list provided by the network side may be a part of candidate PSCell cells or all candidate PSCell cells.

The UE determining a network preference level determination manner includes:

mode 1: the network provided preferred cell list carries network preference ranking values or indication information for each cell. For example, the ranking is represented by 1-N, 1 representing the highest priority, 2 times, N representing the lowest priority;

for another example, the level is identified with indication information, the indication information including: "high, medium, low"

Mode 2: the UE determines according to the numbering sequence of each element in preferred cell list provided by the network, e.g., list number 0 corresponds to the cell with the highest network preference level, 1 represents the next time, and so on;

mode 3: cells in preferred cell list provided by the network (for the case of preferred cell list including only a portion of candidate PSCell cells) are not prioritized, where the UE needs to first determine if the cell is in preferred cell list provided by the network side. And consider that cells in network provided preferred cell list have a high network preference ranking and cells not in network provided preferred cell list have a low network preference ranking.

Example 7

After receiving the configured condition PCell switching configuration information with PSCell addition or change, the terminal evaluates candidate cells, wherein the candidate cells comprise the following scenes and corresponding behaviors:

scene 1: the protocol specifies that the UE always selects the PScell cell with the best signal quality for access;

scenario 1-1: when only one PCell cell meeting the execution condition exists, the UE further selects a target PScell cell to be accessed;

when the UE evaluates and finds that the execution condition of a certain candidate PCell is met, the UE selects the candidate PCell cell as a target PCell cell, and selects a candidate PScell cell with the best signal quality among all candidate PScell cells associated with the PCell cell as the target PScell cell;

scenario 1-2: when a plurality of PCell cells meeting the execution conditions exist, the UE selects a target PScell cell to be accessed and a target PCell cell;

when the UE evaluates and discovers that the execution conditions of a plurality of candidate PCell are simultaneously met, the UE selects a candidate PScell cell with the highest measurement quality value from all candidate PScell cells associated with all PCell cells meeting the conditions as a target PScell cell, and selects the candidate PCell cell associated with the target PScell as a target PCell cell;

Scene 2: the first information of the network configuration indicates that the UE always selects the PScell cell with the highest measurement quality value to access

The specific behavior is described with reference to the behavior in scenario 1.

Scene 3: indicating UE to select PSCell cell access with RRM measurement result above RRM threshold threshold_1 in first information of network configuration;

scenario 3-1: when only one PCell cell meeting the execution condition exists, the UE further selects a target PScell cell to be accessed;

when the UE evaluates and discovers that the execution condition of a certain candidate PCell is met, the UE selects the candidate PCell cell as a target PCell cell, and selects any one candidate PScell cell which is larger than an RRM measurement result Threshold threshold_1 from all candidate PScell cells associated with the PCell cell as the target PScell cell;

scenario 3-2: when there are multiple PCell cells meeting the execution condition, the UE selects a target PScell cell to be accessed, and the target PCell cell

When the UE evaluates and discovers that the execution conditions of a plurality of candidate PCells are simultaneously met, the UE selects any one candidate PScell cell which is greater than the RRM measurement result Threshold threshold_1 from all candidate PScell cells which are associated with all PCell cells meeting the conditions as a target PScell cell, and selects the candidate PCell cell which is associated with the target PScell as a target PCell cell.

Scene 4: indicating the UE to select the cell with the highest network preference level to access in the first information of the network configuration

Scenario 4-1: when only one PCell cell meeting the execution condition exists, the UE further selects a target PScell cell to be accessed;

when the UE evaluates and discovers that the execution condition of a certain candidate PCell is met, the UE selects the candidate PCell cell as a target PCell cell, and selects a PScell cell with the highest network preference level from all candidate PScell cells associated with the PCell cell as the target PScell cell; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in example 6.

Scenario 4-2: when a plurality of PCell cells meeting the execution conditions exist, the UE selects a target PScell cell to be accessed and a target PCell cell;

when the UE evaluates and discovers that the execution conditions of a plurality of candidate PCell are simultaneously satisfied, the UE selects a PSCell cell with the highest network preference level from all candidate PSCell cells associated with all PCell cells satisfying the conditions as a target PSCell cell; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in example 6. The UE selects the candidate PCell cell associated with the target PSCell as a target PCell cell;

Scene 5: indicating the UE to select the cell access with the signal quality above RRM threshold threshold_1 and highest network preference level in the first information of the network configuration;

scenario 5-1: when only one PCell cell meeting the execution condition exists, the UE further selects a target PScell cell to be accessed;

case 1: when the UE evaluates and discovers that the execution condition of a certain candidate PCell is met, the UE selects the candidate PCell cell as a target PCell cell, and selects a candidate PScell cell with signal quality greater than an RRM measurement result threshold_1 and the highest preference level from all candidate PScell cells associated with the PCell cell as the target PScell cell; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in example 6.

Case 2: (for the case of preferred cell list including only a portion of candidate PSCell cells, and cells in preferred cell list provided by the network do not distinguish between network preference levels);

when the UE evaluates and discovers that the execution condition of a certain candidate PCell is met, the UE selects the candidate PCell cell as a target PCell cell, and selects a candidate PScell cell with the highest signal quality in preferred cell list indicated on the network side from all candidate PScell cells associated with the PCell cell as the target PScell; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in mode 3 of example 6.

Case 3: (for the case of preferred cell list including only a portion of candidate PSCell cells, and cells in preferred cell list provided by the network do not distinguish between network preference levels);

when the UE evaluates and discovers that the execution condition of a certain candidate PCell is met, the UE selects the candidate PCell cell as a target PCell cell, and selects any one candidate PScell cell with signal quality greater than an RRM measurement result Threshold threshold_1 in preferred cell list indicated on a network side from all candidate PScell cells associated with the PCell cell as the target PScell cell; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in mode 3 of example 6.

Scenario 5-2: when a plurality of PCell cells meeting the execution conditions exist, the UE selects a target PScell cell to be accessed and a target PCell cell;

case 1: when the UE evaluates and finds that the execution condition of the execution conditions of the plurality of candidate pcells is satisfied, the UE selects, as a target PSCell cell, a candidate PSCell cell having a signal quality greater than the RRM measurement result Threshold threshold_1 and having the highest preference level from all candidate PSCell cells associated with all the PCell cells satisfying the condition; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in example 6.

And the UE selects the candidate PCell cell associated with the target PScell as a target PCell cell.

when the UE evaluates and finds that the execution condition of the execution conditions of the plurality of candidate PCell is satisfied, the UE selects, as a target PSCell cell, a candidate PSCell cell having the highest network preference ranking among preferred cell list indicated on the network side from among all candidate PSCell cells associated with all the PCell cells satisfying the condition described above; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in mode 3 of example 6.

when the UE evaluates and discovers that the execution conditions of a plurality of candidate PCells are simultaneously met, the UE selects any one candidate PScell cell with signal quality greater than an RRM measurement result Threshold threshold_1 in preferred cell list indicated by a network side from all candidate PScell cells associated with all PCell cells meeting the conditions as a target PScell cell; the network preference ranking is determined according to preferred cell list provided by the network side in the manner shown in mode 3 of example 6.

The UE selects the candidate PCell cell associated with the target PSCell as a target PCell cell

Scene 6: indicating in the first information of the network configuration that the UE comprehensively considers the cell access with optimal weighting of the signal quality and the network preference level

Scenario 6-1: when only one PCell cell meeting the execution condition exists, the UE further selects a target PScell cell to be accessed;

when the UE evaluates and finds that the execution condition of a certain candidate PCell is met, the UE calculates the access priority of each candidate PScell cell in all candidate PScell cells associated with the PCell cell according to the following formula, and selects the candidate PScell cell with the highest priority for access;

the access priority calculation formula is as follows:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

rrm_result is the sequence number of the PSCell cell i in all candidate PSCell cells associated with the target PCell cell according to the RRM measurement result from high to low;

p_nw_reference is the network preference level indicated in preferred cell list by the PSCell i network side;

x1 is a weight factor, and may be determined by the UE according to an algorithm or indicated by the network side.

Scenario 6-2: when there are multiple PCell cells meeting the execution condition, the UE selects a target PScell cell to be accessed, and the target PCell cell

When the UE evaluates and discovers that the execution conditions of a plurality of candidate PCell are simultaneously met, the UE calculates the access priority of each candidate PScell cell in all candidate PScell cells associated with all PCell cells meeting the conditions according to the following formula, and selects the candidate PScell cell with the highest priority for access;

the access priority calculation formula is as follows:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

In at least one embodiment of the present application, the following technical solutions are also provided: the network device only configures the execution condition of the PSCell, and in the scenario that the execution condition of the PCell is not configured, the method further includes:

the method comprises the steps that a terminal receives conditional reconfiguration configuration information sent by network equipment, wherein the conditional reconfiguration configuration information comprises execution conditional configuration information of primary and secondary cell PSCell switching;

The terminal measures and evaluates candidate PSCells according to the execution condition configuration information of the PSCell switching, and determines a candidate PSCell set meeting the execution condition, wherein the candidate PSCell set comprises at least one candidate PCell;

and the terminal determines a target PCell and a target PScell according to the candidate PScell set and a candidate primary cell PCell set associated with the candidate PScell set.

In one implementation, in a case where the candidate PSCell set includes one candidate PSCell, the determining, by the terminal, the target PCell and the target PSCell according to the candidate PSCell set and the candidate primary cell PCell set associated with the candidate PSCell set includes:

the terminal takes one candidate PScell included in the candidate PScell set as the target PScell;

and the terminal selects one candidate PCell from the candidate PCell set associated with the candidate PSCell set as the target PCell according to a second rule.

In another implementation manner, in a case where the candidate PSCell set includes at least two candidate pscells, the determining, by the terminal, a target PCell and a target PSCell according to the candidate PSCell set and a candidate primary cell PCell set associated with the candidate PSCell set includes:

The terminal selects one candidate PCell from the candidate PCell set associated with the candidate PSCell set as the target PCell according to a second rule;

and the terminal selects the candidate PScell associated with the target PCell from the candidate PScell set as the target PScell.

Optionally, the second rule includes any one of the following:

selecting a candidate PCell with the highest measurement quality value from the candidate PCell set as the target PCell;

selecting any one of the candidate PCell sets with the Radio Resource Management (RRM) measurement result larger than a third RRM threshold as the target PCell;

selecting a candidate PCell with the highest network preference level from the candidate PCell set as the target PCell;

selecting a candidate PCell from the candidate PCell set, wherein the RRM measurement result is greater than a fourth RRM threshold, and the candidate PCell in the preference cell information indicated by the network is used as the target PCell;

and selecting a candidate PCell with highest access priority from the candidate PCell set as the target PCell.

Optionally, if the RRM measurement result in the candidate PCell set is greater than a fourth RRM threshold and the number of candidate pscells in the preference cell information indicated by the network is greater than 2, the second rule further includes:

Selecting a candidate PCell with the highest measurement quality value from at least 2 candidate pcells as the target PCell;

or,

selecting a candidate PCell with the highest network preference level from at least 2 candidate pcells as the target PCell;

or,

any one candidate PCell cell is selected from at least 2 candidate pcells as the target PCell.

In this embodiment, the determination manner of the second rule is identical to the determination manner of the first rule in the foregoing implementation, but the candidate PSCell in the first rule needs to be replaced with the candidate PCell, which is not repeated here.

It should be further noted that, the determination manners of the network preference level, the access priority, etc. of the candidate PCell are also consistent with the determination manners of the network preference level, the access priority, etc. of the candidate PSCell, and the candidate PSCell in the related information needs to be replaced by the candidate PCell, which is not repeated here.

As shown in fig. 5, the embodiment of the present application further provides a terminal, including a memory 520, a transceiver 510, and a processor 500:

a memory 520 for storing a computer program; a transceiver 510 for transceiving data under the control of the processor 500; a processor 500 for reading the computer program in the memory 520 and performing the following operations:

As an alternative embodiment, in case the set of candidate PCell includes one candidate PCell, the processor is further configured to read a computer program in the memory and perform the following operations:

As an alternative embodiment, in case the set of candidate pcells comprises at least two candidate pcells, the processor is further adapted to read a computer program in the memory and to:

As an alternative embodiment, the first rule includes any one of the following:

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

or,

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

determining the first rule according to a preset rule;

or,

determining the first rule according to terminal implementation;

or,

and receiving the first rule sent by the first network equipment.

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

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

As an optional embodiment, the terminal receives the conditional reconfiguration configuration information through a first RRC message carrying the conditional reconfiguration configuration information;

the first RRC message also carries the first information or the first rule.

As an alternative embodiment, the first information or the first rule is configured based on each candidate PCell; or,

the first information or the first rule is configured on a per node basis as an alternative embodiment, and the preferred cell information includes at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

The number of candidate pscells in the corresponding candidate PSCell set.

As an alternative embodiment, the number of candidate pscells in the corresponding set of candidate pscells is used to implicitly indicate the network preference level of the candidate pscells;

As an alternative embodiment, the preferred cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

Wherein in fig. 5, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 500 and various circuits of memory represented by memory 520, 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 510 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, etc. The user interface 530 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 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

Alternatively, the processor 500 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.

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. 6, an embodiment of the present application further provides a terminal, including:

a first receiving unit 601, configured to receive conditional reconfiguration configuration information sent by a first network device, where the conditional reconfiguration configuration information includes execution condition configuration information of PCell handover of a primary cell;

a first determining unit 602, configured to perform measurement and evaluation on candidate PCell according to the execution condition configuration information of PCell handover, and determine a candidate PCell set that meets an execution condition, where the candidate PCell set includes at least one candidate PCell;

a second determining unit 603 is configured to determine a target PCell and a target PSCell according to a candidate PCell set and a candidate primary and secondary cell PSCell set associated with the candidate PCell set.

As an alternative embodiment, in case the set of candidate PCell includes one candidate PCell, the second determining unit is further adapted to:

As an alternative embodiment, in case the set of candidate pcells comprises at least two candidate pcells, the second determining unit is further adapted to:

As an alternative embodiment, the first rule includes any one of the following:

As an alternative embodiment, the terminal further comprises:

and a third determining unit, configured to determine a network preference level of the candidate PSCell according to the preference cell information indicated by the network.

or,

As an alternative embodiment, the terminal further comprises:

a fourth determining unit, configured to determine, according to the first formula, an access priority of each candidate PSCell in the candidate PSCell set; the first formula is:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

As an alternative embodiment, the terminal further comprises:

a fifth determining unit configured to determine the first rule according to a predetermined convention;

or, determining the first rule according to the terminal implementation;

or determining the first rule according to the first information sent by the first network device;

or, the first rule sent by the first network device is received.

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

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

As an alternative embodiment, the terminal further comprises:

a second receiving unit, configured to receive a broadcast message or a dedicated radio resource control RRC message sent by the first network device; the broadcast message or dedicated RRC message carries the first information or the first rule.

the first RRC message also carries the first information or the first rule.

the first information or the first rule is configured on a per node basis.

As an alternative embodiment, the preferred cell information includes at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

network preference level identification corresponding to each candidate PScell;

As shown in fig. 7, the embodiment of the present application further provides a network device, which is a first network device, and includes a memory 720, a transceiver 710, and a processor 700:

A memory 720 for storing a computer program; a transceiver 710 for transceiving data under the control of the processor 700; a processor 700 for reading the computer program in the memory and performing the following operations:

sending first information or a first rule to a terminal;

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

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

A second RRM threshold for selecting a target PSCell;

The first information or the first rule is configured on a per node basis.

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

network preference level identification corresponding to each candidate PScell;

generating the first information or a first rule;

or,

Independently generating the first information or the first rule;

or,

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

As an alternative embodiment, the assistance information is configured based on each candidate PCell; or,

the auxiliary information is configured on a per node basis.

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

The processor 700 may be a 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 device provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method and achieve the same technical effects, and the same parts and beneficial effects as those of the embodiment of the method in the embodiment are not described in detail herein.

As shown in fig. 8, an embodiment of the present application further provides a network device, including:

A first sending unit 801, configured to send, to a terminal, condition reconfiguration configuration information, where the condition reconfiguration configuration information includes execution condition configuration information of a PCell handover of a primary cell.

As an alternative embodiment, the network device further comprises:

a third sending unit, configured to send the first information or the first rule by the terminal;

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

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

As an alternative embodiment, the third transmitting unit is further configured to:

As an alternative embodiment, the first transmitting unit and the third transmitting unit are further configured to:

the first information or the first rule is configured on a per node basis.

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

Cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

network preference level identification corresponding to each candidate PScell;

As an alternative embodiment, the network device further comprises:

a generating unit, configured to generate the first information or the first rule;

or,

and the fourth receiving unit is used for receiving the first information or the first rule sent by the second network equipment.

As an alternative embodiment, the generating unit is further configured to:

independently generating the first information or the first rule;

or,

Identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

the auxiliary information is configured on a per node basis.

As shown in fig. 9, the embodiment of the present application further provides a network device, which is a second network device, and includes a memory 920, a transceiver 910, and a processor 900:

a memory 920 for storing a computer program; a transceiver 910 for transceiving data under the control of the processor 900; a processor 900 for reading the computer program in the memory 920 and performing the following operations:

the first rule is a rule for selecting the target PSCell by the terminal.

identification information of the candidate PCell;

Identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

the auxiliary information is configured on a per node basis.

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

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

A first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

As an alternative embodiment, the first rule includes any one of the following:

Wherein in fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 900 and various circuits of memory represented by memory 920, 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 910 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.

Processor 900 may be a Central Processing Unit (CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or complex programmable logic device (Complex Programmable Logic Device, CPLD), and may also employ a multi-core architecture.

As shown in fig. 10, an embodiment of the present application further provides a network device, including:

A second sending unit 1001, configured to send auxiliary information to a first network device, where the auxiliary information is used to assist the first network device to generate first information or determine a first rule;

the first rule is a rule for selecting the target PSCell by the terminal.

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

the auxiliary information is configured on a per node basis.

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

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

As an alternative embodiment, the first rule includes any one of the following:

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 selecting a target cell, the method comprising:

2. The method of claim 1, wherein, in the case where the set of candidate PCell includes one candidate PCell,

3. The method of claim 1, wherein, in the case where the set of candidate pcells includes at least two candidate pcells,

4. A method according to claim 2 or 3, wherein the first rule comprises any one of:

5. The method according to claim 4, wherein the method further comprises:

6. The method of claim 4, wherein if the RRM measurement in the candidate PSCell set is greater than a second RRM threshold and the number of candidate pscells in the network indicated preferred cell information is greater than 2, the first rule further comprises:

or,

7. The method according to claim 4, wherein the method further comprises:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

8. A method according to claim 2 or 3, characterized in that the method further comprises:

the terminal determines the first rule according to a preset rule;

or,

the terminal determines the first rule according to terminal implementation;

or,

Or,

the terminal receives the first rule sent by the first network device.

9. The method of claim 8, wherein the first information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

10. The method of claim 8, wherein the method further comprises:

11. The method according to claim 8, wherein the terminal receives the conditional reconfiguration configuration information through a first RRC message carrying the conditional reconfiguration configuration information;

The first RRC message also carries the first information or the first rule.

12. The method of claim 8, wherein the step of determining the position of the first electrode is performed,

the first information or the first rule is configured based on each candidate PCell; or,

the first information or the first rule is configured on a per node basis.

13. The method according to claim 4 or 5 or 9, wherein the preferred cell information comprises at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

14. The method of claim 13, wherein a number of candidate pscells in a corresponding set of candidate pscells is used to implicitly indicate a network preference level of the candidate pscells;

15. The method of claim 13, wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

16. A method for configuring target cell selection, comprising:

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

18. The method of claim 17, wherein the first information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

19. The method of claim 17, wherein the first network device sending the conditional first information or the first rule to the terminal comprises:

20. The method of claim 17, wherein the first network device sends the condition reconfiguration configuration information to the terminal, and the first information or the first rule comprises:

21. The method of claim 17, wherein the step of determining the position of the probe is performed,

the first information or the first rule is configured on a per node basis.

22. The method of claim 18, wherein the preference cell information comprises at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

23. The method of claim 22, wherein a number of candidate pscells in a corresponding set of candidate pscells is used to implicitly indicate a network preference level of the candidate pscells;

24. The method of claim 22, wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

25. The method according to any one of claims 17-24, further comprising:

the first network device generating the first information or first rule;

or,

26. The method of claim 25, wherein the first network device generating the first information or first rule comprises:

or,

27. The method of claim 26, wherein the auxiliary information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

A first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

28. The method according to claim 26 or 27, wherein,

the assistance information is configured based on each candidate PCell; or,

the auxiliary information is configured on a per node basis.

29. An information transmission method, the method comprising:

the first rule is a rule for selecting the target PSCell by the terminal.

30. The method of claim 29, wherein the assistance information comprises at least one of:

identification information of the candidate PCell;

Identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

31. The method according to claim 29 or 30, wherein,

the assistance information is configured based on each candidate PCell; or,

the auxiliary information is configured on a per node basis.

32. The method of claim 29, wherein the first information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

33. The method of claim 29, wherein the first rule comprises any one of:

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

35. The terminal of claim 34, wherein the processor is further configured to read the computer program in the memory and perform the following operations in the case where the set of candidate pcells includes one candidate PCell:

36. The terminal of claim 34, wherein the processor is further configured to read the computer program in the memory and perform the following operations in the case that the set of candidate pcells includes at least two candidate pcells:

37. The terminal according to claim 35 or 36, wherein the first rule comprises any one of:

38. The terminal of claim 37, wherein the processor is further configured to read the computer program in the memory and perform the following:

39. The terminal of claim 37, wherein if the RRM measurement in the candidate PSCell set is greater than a second RRM threshold and the number of candidate pscells in the network indicated preferred cell information is greater than 2, the first rule further comprises:

or,

40. The terminal of claim 37, wherein the processor is further configured to read the computer program in the memory and perform the following:

P_i＝x1*RRM_result+(1-x1)*P_nw_preference；

41. The terminal according to claim 35 or 36, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

determining the first rule according to a preset rule;

or,

determining the first rule according to terminal implementation;

or,

and receiving the first rule sent by the first network equipment.

42. The terminal of claim 41, wherein the first information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

43. The terminal of claim 41, wherein the processor is further configured to read the computer program in the memory and perform the following:

44. The terminal of claim 41, wherein the terminal receives the conditional reconfiguration configuration information through a first RRC message carrying the conditional reconfiguration configuration information;

the first RRC message also carries the first information or the first rule.

45. The terminal of claim 41, wherein the terminal is configured to,

the first information or the first rule is configured on a per node basis.

46. The terminal of claim 37 or 38 or 42, wherein the preference cell information comprises at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

the number of candidate pscells in the corresponding candidate PSCell set.

47. The terminal of claim 46, wherein a number of candidate pscells in the corresponding set of candidate pscells is used to implicitly indicate a network preference level of the candidate pscells;

48. The terminal of claim 46, wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

49. A terminal, comprising:

50. A network device, the network device being a first network device, comprising a memory, a transceiver, and a processor:

51. The network device of claim 50, wherein the processor is further configured to read the computer program in the memory and perform the following:

Sending first information or a first rule to a terminal;

52. The network device of claim 51, wherein the first information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

53. The network device of claim 51, wherein the processor is further configured to read the computer program in the memory and perform the following:

54. The network device of claim 51, wherein the processor is further configured to read the computer program in the memory and perform the following:

55. The network device of claim 51, wherein,

the first information or the first rule is configured on a per node basis.

56. The network device of claim 52, wherein the preference cell information comprises at least one of:

candidate PSCell frequency points;

physical cell identity of candidate PSCell;

cell indexes of candidate pscells;

The number of candidate pscells in the corresponding candidate PSCell set.

57. The network device of claim 56, wherein a number of candidate pscells in a corresponding set of candidate pscells is used to implicitly indicate a network preference level of the candidate pscells;

58. The network device of claim 56, wherein the preference cell information further comprises at least one of:

network preference level identification corresponding to each candidate PScell;

59. The network device of any one of claims 51-58, wherein the processor is further configured to read a computer program in the memory and perform the following:

generating the first information or a first rule;

or,

60. The network device of claim 59, wherein the processor is further configured to read the computer program in the memory and perform the operations of:

independently generating the first information or the first rule;

Or,

61. The network device of claim 60, the assistance information comprising at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

62. The network device of claim 60 or 61, wherein,

the assistance information is configured based on each candidate PCell; or,

the auxiliary information is configured on a per node basis.

63. A network device, comprising:

64. A network device, the network device being a second network device, comprising a memory, a transceiver, and a processor:

the first rule is a rule for selecting the target PSCell by the terminal.

65. The network device of claim 64, wherein the assistance information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

A first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

network preference level identification corresponding to the candidate PScell;

a container carrying first information.

66. The network device of claim 64 or 65, wherein the network device,

the assistance information is configured based on each candidate PCell; or,

the auxiliary information is configured on a per node basis.

67. The network device of claim 64, wherein the first information comprises at least one of:

identification information of the candidate PCell;

identification information of candidate pscells;

a condition reconfiguration configuration ID;

a first RRM threshold for selecting a target PSCell;

a second RRM threshold for selecting a target PSCell;

68. The network device of claim 64, wherein the first rule comprises any one of:

69. A network device, comprising:

The first rule is a rule for selecting the target PSCell by the terminal.

70. 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 15, or to perform the method of any one of claims 16 to 28, or to perform the method of any one of claims 29 to 33.