CN117202277A

CN117202277A - Communication method, device, terminal, network equipment and core network equipment

Info

Publication number: CN117202277A
Application number: CN202210602655.0A
Authority: CN
Inventors: 姜大洁; 丁圣利; 姚健
Original assignee: Vivo Software Technology Co Ltd
Current assignee: Vivo Software Technology Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-12-08
Also published as: WO2023231870A1

Abstract

The application discloses a communication method, a device, a terminal, network side equipment and core network equipment, belonging to the technical field of communication, wherein the communication method comprises the following steps: the terminal receives a switching configuration sent by a first network side device, wherein the switching configuration comprises: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells; the terminal measures at least one first target signal of one or more candidate target cells and/or serving cells according to the switching configuration; the terminal initiates random access to at least one candidate target cell meeting the switching condition; the handover condition includes at least one of: the perception performance evaluation index meets a first preset condition; the sensing measurement quantity meets a second preset condition; the sensing result meets a third preset condition; the parameter information of the first target signal used by the candidate target cell meets the requirement of perceived QoS; sensing the change of the state of the target; the position of the terminal changes; the communication index satisfies a fourth preset condition.

Description

Communication method, device, terminal, network equipment and core network equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a communication method, a device, a terminal, network side equipment and core network equipment.

Background

In the communication perception integrated service or the wireless perception service, main reasons for causing the base station participating in the perception flow to switch include one of the following:

1. sensing movement of the target, resulting in switching of base stations participating in the sensing process;

2. sensing the movement of the signal receiving end, so as to lead to the switching of the base stations participating in the sensing process;

3. the movement of the signal transmitting end is perceived, so that the base stations participating in the perception flow are switched.

In this case, only the base station performs handover, and the User Equipment (UE, also called a terminal) is unchanged, where the base station and the UE are a sensing signal receiving node and a transmitting node.

However, in the prior art, there is no clear scheme for the flow of the handover of the base station participating in the sensing flow.

Disclosure of Invention

The embodiment of the application provides a communication method, a device, a terminal, network side equipment and core network equipment, which are used for realizing the switching of base stations participating in a sensing flow.

In a first aspect, a communication method is provided, the method comprising:

the terminal receives a switching configuration sent by a first network side device, wherein the switching configuration comprises the following steps: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

The terminal measures at least one first target signal of one or more candidate target cells and/or serving cells according to the switching configuration;

the terminal initiates random access to at least one candidate target cell meeting the switching condition according to a first measurement result of at least one first target signal;

wherein the switching condition includes at least one of:

the perception performance evaluation index of the candidate target cell and/or the serving cell meets a first preset condition;

the perception measurement quantity of the candidate target cell and/or the serving cell meets a second preset condition;

the perception result of the candidate target cell and/or the serving cell meets a third preset condition;

the parameter information of the first target signal used by the candidate target cell meets the requirement of the perceived quality of service (QoS);

sensing the change of the state of the target;

the position of the terminal changes;

the communication index of the serving cell and/or the communication index of the candidate target cell received by the terminal meet a fourth preset condition;

wherein the first target signal comprises at least one of: a sense signal, a synchronization signal, a reference signal, and a data signal.

In a second aspect, a communication apparatus is provided, which is applied to a first network side device, and includes:

The first receiving module is configured to receive a switching configuration sent by a first network side device, where the switching configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

a first measurement module for measuring at least one first target signal of one or more candidate target cells and/or serving cells according to the handover configuration;

a processing module, configured to initiate random access to at least one candidate target cell that satisfies a handover condition according to a first measurement result of at least one first target signal;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a third aspect, a communication method is provided, the method comprising:

the method comprises the steps that first network side equipment sends switching configuration to a terminal, wherein the switching configuration comprises the following steps: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a fourth aspect, a communications apparatus is provided, applied to a first network side device, including:

the first sending module is configured to send a switching configuration to the terminal, where the switching configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a fifth aspect, a communication method is provided, the method comprising:

The second network side equipment and the terminal execute a random access process;

the second network side equipment is associated with at least one candidate target cell of the terminal meeting the switching condition;

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a sixth aspect, a communication apparatus is provided, which is applied to a second network side device, and includes:

the execution module is used for executing a random access process with the terminal;

The handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a seventh aspect, a communication method is provided, the method comprising:

the core network equipment determines whether to use a judging result of the condition switching;

the core network equipment sends the judging result to first network side equipment;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

An eighth aspect provides a communication apparatus applied to a core network device, including:

the determining module is used for determining whether to use the judging result of the condition switching;

the second sending module is used for sending the judging result to the first network side equipment;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a ninth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a tenth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to receive a handover configuration sent by a first network side device, where the handover configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells; the processor is configured to measure at least one first target signal of one or more candidate target cells and/or serving cells according to the handover configuration; the communication interface is used for initiating random access to at least one candidate target cell meeting the switching condition according to a first measurement result of at least one first target signal;

Wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In an eleventh aspect, a network side device is provided, the network side device being a first network side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method according to the third aspect when executed by the processor.

A twelfth aspect provides a network side device, where the network side device is a first network side device, and the network side device includes a processor and a communication interface, where the communication interface is configured to send a handover configuration to a terminal, and the handover configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

Wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a thirteenth aspect, a network side device is provided, which is a second network side device, and includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions implement the steps of the method according to the fifth aspect when executed by the processor.

A fourteenth aspect provides a network side device, where the network side device is a second network side device, and the network side device includes a processor and a communication interface, where the processor is configured to execute a random access procedure with a terminal;

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

In a fifteenth aspect, there is provided a core network device comprising a processor and a memory storing programs or instructions executable on the processor, which when executed by the processor implement the steps of the method according to the seventh aspect.

A sixteenth aspect provides a core network device, including a processor and a communication interface, where the processor is configured to determine whether to use a result of determining a conditional handover; the communication interface is used for sending the judging result to first network side equipment;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

A seventeenth aspect provides a communication system comprising: a terminal, a first network side device, a second network side device and a core network device, wherein the terminal is used for executing the steps of the communication method according to the first aspect, the first network side device is used for executing the steps of the communication method according to the third aspect, the second network side device is used for executing the steps of the communication method according to the fifth aspect, and the core network device is used for executing the steps of the communication method according to the seventh aspect.

In an eighteenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method of the first, third, fifth or seventh aspects.

In a nineteenth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first, third, fifth or seventh aspects.

In a twentieth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to perform the steps of the method according to the first, third, fifth or seventh aspects.

In the embodiment of the application, the switching configuration sent by the first network side equipment is received, the measurement of the signals sent by the candidate target cells is carried out based on the switching configuration, and the random access is initiated to at least one candidate target cell meeting the switching condition based on the measurement result, so that the switching of the cells participating in the sensing flow is realized.

Drawings

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

FIG. 2 is a flow chart of a communication method according to an embodiment of the present application;

FIG. 3 is a diagram of a one-dimensional plot SNR calculation;

FIG. 4 is a schematic diagram of a network architecture for application one;

FIG. 5 is a schematic diagram of a network architecture for application two;

FIG. 6 is a second flow chart of a communication method according to an embodiment of the application;

FIG. 7 is a third flow chart of a communication method according to an embodiment of the application;

FIG. 8 is a flow chart of a communication method according to an embodiment of the present application;

FIG. 9 is one of the block diagrams of the communication device according to the embodiment of the present application;

fig. 10 is a schematic structural view of a terminal according to an embodiment of the present application;

FIG. 11 is a second block diagram of a communication device according to an embodiment of the application;

fig. 12 is a schematic structural diagram of a network side device according to an embodiment of the present application;

FIG. 13 is a third block diagram of a communication device according to an embodiment of the present application;

FIG. 14 is a fourth block diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a core network device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple A) ccess, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (SC-carrier Frequency Division Multiple Access, FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in the NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The related art to which the present application relates is described below first:

1. communication perception integration

Future mobile communication systems, such as B5G systems or 6G systems, will have a sensing capability in addition to the communication capability. The sensing capability, i.e. one or more devices with sensing capability, can sense information such as the azimuth, distance, speed and the like of the target object through sending and receiving wireless signals, or detect, track, identify, image and the like the target object, event or environment.

In the future, along with deployment of small base stations with high-frequency band and large bandwidth capabilities such as millimeter waves and terahertz waves in a 6G network, the perceived resolution is obviously improved compared with the centimeter waves, so that the 6G network can provide finer perceived services. Typical perceptual functions and application scenarios are shown in table 1.

Table 1 exemplary perceptional function versus application scenario Table

According to the difference between the sensing signal transmitting node and the receiving node, the sensing signal transmitting node is divided into 6 basic sensing modes, and specifically comprises the following steps:

(1) Base station echo sensing; in this sense mode, the base station a transmits a sense signal and performs a sense measurement by receiving an echo of the sense signal.

(2) Sensing an air interface between base stations; at this time, the base station B receives the sensing signal transmitted by the base station a, and performs sensing measurement.

(3) Sensing an uplink air interface; at this time, the base station a receives the sensing signal transmitted by the terminal a, and performs sensing measurement.

(4) Sensing a downlink air interface; at this time, the terminal B receives the sensing signal transmitted by the base station B, and performs sensing measurement.

(5) Terminal echo sensing; at this time, the terminal a transmits a sense signal and performs a sense measurement by receiving an echo of the sense signal.

(6) Inter-terminal side link (sidlink) awareness; at this time, the terminal B receives the sensing signal transmitted by the terminal a and performs sensing measurement.

It should be noted that in an actual system, one or more different sensing manners may be selected according to different sensing cases and sensing requirements, and one or more transmitting nodes and receiving nodes of each sensing manner may be provided.

2. Handover

The handover is the mobile trigger of the UE in the connected state, and the basic targets of the handover are:

indicating that the UE can communicate with a cell with better channel quality than the current serving cell;

and continuous uninterrupted communication service is provided for the UE, so that dropped calls caused by poor signal quality of cells are effectively prevented.

However, the prior art does not have a flow of base station switching for sense of general integration.

The communication method, the device, the terminal, the network side equipment and the core network equipment provided by the embodiment of the application are described in detail through some embodiments and application scenes thereof by combining the attached drawings.

As shown in fig. 2, an embodiment of the present application provides a communication method, including:

step 201, a terminal receives a switching configuration sent by a first network side device;

wherein the switching configuration comprises: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

it should be noted that, the cells mentioned in the embodiments of the present application may refer to virtual cells after performing cell division on a network side device, and may also be network side devices, where the network side devices may be base stations, transmission and Reception Points (TRP), intelligent super surface (RIS), relays, and so on.

Step 202, the terminal measures at least one first target signal of one or more candidate target cells and/or serving cells according to the switching configuration;

it should be noted that, the first target signal includes at least one of the following: a sense signal, a synchronization signal, a reference signal, and a data signal.

It should be noted that, one or more candidate target cells in step 201 and step 202 refer to at least one candidate target cell.

Step 203, the terminal initiates random access to at least one candidate target cell meeting the switching condition according to a first measurement result of at least one first target signal;

That is, this step is to initiate random access by selecting one or more candidate target cells satisfying a handover condition among the one or more candidate target cells taking the at least one first target signal measurement based on the first measurement result of the at least one first target signal.

Optionally, the switching condition in the embodiment of the present application includes at least one of the following:

a11, the perception performance evaluation index of the candidate target cell and/or the serving cell meets a first preset condition;

for example, the perceived performance evaluation index of the candidate target cell is maintained at or above a preset threshold in a preset time period, or exceeds the preset threshold for a preset number of times in the preset time period; for another example, the perceived performance evaluation index of the candidate target cell is better than the perceived performance evaluation index of the serving cell (the serving cell may refer to the serving cell under the source base station to which the terminal is connected, and may also be referred to as the source cell) in a preset time period, or the number of times that the perceived performance evaluation index of the serving cell is exceeded in the preset time period reaches a preset number of times; for another example, the perceived performance evaluation index of the candidate target cell is better than the first threshold in the preset time period, and meanwhile, the perceived performance evaluation index of the serving cell is lower than the second threshold in the preset time period.

Optionally, in at least one embodiment of the present application, the perceptual performance evaluation index includes at least one of:

a111, perceived signal-to-noise ratio (SNR);

the perceived SNR refers to the ratio of the perceived signal energy reflected by the perceived target or perceived region to the noise signal energy in the environment and the device.

A112, sensing SINR;

the perceived SINR refers to the ratio of the perceived signal energy reflected by the perceived target or perceived region to the sum of the energies of the interfering signal and noise signal in the environment and the device.

A113, counting the multiple measurement results of the same sensing measurement quantity;

optionally, the statistics include at least one of: mean, standard deviation and variance;

a114, sensing a first deviation of a predicted value and a measured value of the measured quantity and a statistical result of the first deviation;

the measured value refers to an actual measured value of the sensing measurement quantity, that is, the term refers to a deviation of a predicted value of the sensing measurement quantity from the actual measured value and a mean, standard deviation, or variance of the deviation.

A115, a second deviation of the predicted value and the measured value of the sensing result and a statistical result of the second deviation;

that is, this term refers to the deviation of the predicted value of the perceived result from the actual measured value and the mean, standard deviation, or variance of the deviation.

A116, echo signal power;

that is, the term is an echo signal power of at least one of a sense signal, a synchronization signal, a reference signal, and a data signal transmitted by the candidate target cell.

The method for obtaining the echo signal power may be at least one of the following:

b11, constant false alarm detection (CFAR) is carried out on the time delay one-dimensional graph obtained through fast time dimension FFT processing of the echo signals, the maximum sample point with the amplitude of the CFAR passing threshold is taken as a target sample point, and the amplitude of the CFAR passing threshold is taken as the target signal amplitude, so that the echo signal power is calculated, as shown in figure 3.

B12, carrying out CFAR on the Doppler one-dimensional graph obtained by carrying out slow time dimension FFT processing on the echo signals, and calculating echo signal power by taking the maximum sample point of the amplitude of the CFAR passing threshold as a target sample point and taking the amplitude of the maximum sample point as the target signal amplitude, wherein the power is as shown in figure 3;

b13, performing CFAR (computational fluid dynamics) based on a delay-Doppler two-dimensional graph obtained by 2D-FFT (fast Fourier transform) processing of the echo signal, and calculating the power of the echo signal by taking a maximum sample point with the amplitude of the CFAR passing through a threshold as a target sample point and taking the amplitude of the maximum sample point as the amplitude of the target signal;

b14, performing CFAR on the delay-Doppler-angle three-dimensional graph obtained based on the echo signal 3D-FFT processing, and calculating echo signal power by taking the maximum sample point of the amplitude of the CFAR passing threshold as a target sample point and taking the amplitude of the CFAR passing threshold as a target signal amplitude;

Besides the above method for determining the target signal amplitude, the maximum amplitude sample point of the CFAR threshold may be used as the target signal amplitude, and the average value of the maximum amplitude sample point of the CFAR threshold and the nearest several threshold sample points may be used as the target signal amplitude.

It should also be noted that, optionally, the perceptual performance evaluation index may further include:

perceptually reproducible evaluation metrics (such as the sum of Euclidean distances (Euclidean Distance) between the front and rear sequence samples, or regular path distances In dynamic time planning (Dynamic Time Warping, DTW), or other metrics that reflect the similarity of the two sequences, including but not limited to, longest common string (Longest Common Subsequence, LCSS), real sequence edit Distance (Edit Distance on Real Sequences, EDR), real penalty edit Distance (Edit Distance with Real Penalty, ERP), hastedorff Distance (Hausdorff Distance), frechet Distance (Fre chet Distance), one-Way Distance (OWD), multi-line position Distance (Localy In-between Polylines, LIP), etc.

Optionally, in at least one embodiment of the present application, the above-mentioned SNR and SINR obtaining manners may respectively adopt at least one of the following manners:

B21, performing constant false alarm detection (CFAR) on a time delay one-dimensional graph obtained based on fast time dimension FFT processing of echo signals, taking the maximum sample point with the threshold crossing amplitude of the CFAR as a target sample point, taking the amplitude of the CFAR as a target signal amplitude, taking all sample points except + -epsilon sample points away from the target sample point position in the one-dimensional graph as interference/noise sample points, counting the average interference/amplitude of the sample points as interference/noise signal amplitude, and finally calculating SNR/SINR (signal to noise ratio) by taking the target signal amplitude and the interference/noise signal amplitude as shown in figure 3;

b22, carrying out CFAR on the Doppler one-dimensional graph obtained based on echo signal slow time dimension FFT processing, taking the maximum sample point of the CFAR threshold amplitude as a target sample point, taking the amplitude as a target signal amplitude, taking all sample points except for +/-eta sample points from the target sample point position in the one-dimensional graph as interference/noise sample points, counting the average amplitude as interference/noise signal amplitude, and finally calculating SNR/SINR by taking the target signal amplitude and the interference/noise signal amplitude;

b23, performing CFAR (computational fluid dynamics) based on a delay-Doppler two-dimensional graph obtained by echo signal 2D-FFT (fast time dimension) processing, taking the maximum sample point with the amplitude of CFAR threshold as a target sample point, taking the amplitude of the maximum sample point as a target signal amplitude, taking all sample points except for + -epsilon (fast time dimension) and + -eta (slow time dimension) sample points of the target sample point in the two-dimensional graph as interference/noise sample points, counting the average amplitude of the sample points as interference/noise signal amplitude, and finally calculating SNR (signal to noise ratio) by taking the target signal amplitude and the interference/noise signal amplitude;

B24, performing CFAR on a delay-Doppler-angle three-dimensional graph obtained based on echo signal 3D-FFT processing, taking the maximum sample point of the CFAR threshold amplitude as a target sample point, taking the amplitude as a target signal amplitude, taking all sample points except for + -epsilon (fast time dimension), + -eta (slow time dimension) and + -delta (angle dimension) sample points of the target sample point in the three-dimensional graph as interference/noise sample points, counting the average amplitude as interference/noise signal amplitude, and finally calculating SNR/SINR by taking the target signal amplitude and the interference/noise signal amplitude;

besides the above method for determining the target signal amplitude, the maximum sample point of the CFAR threshold amplitude may be used as the target signal amplitude, and the average value of the maximum sample point of the CFAR threshold amplitude and the nearest several threshold sample points may be used as the target signal amplitude;

it should be noted that, the determination method of the interference/noise sample point may further be to screen according to the determined interference/noise sample point, where the screening method is: for the time delay one-dimensional graph, removing a plurality of sample points with time delay being near 0, and taking the rest interference/noise sample points as noise sample points; for the Doppler one-dimensional graph, removing a plurality of sample points near Doppler 0, and taking the rest interference/noise sample points as interference/noise sample points; for a delay-Doppler two-dimensional graph, removing interference/noise sample points in a strip range formed by a plurality of points near the delay 0 and the whole Doppler range, and taking the rest noise sample points as the interference/noise sample points; for a delay-doppler-angle three-dimensional plot, the interference/noise sample points of the slice-like range consisting of several points, all doppler ranges and all angle ranges, with the remaining interference/noise sample points being taken as interference/noise sample points, are removed.

A12, the perception measurement quantity of the candidate target cell and/or the serving cell meets a second preset condition;

for example, the perceived measurement quantity of the candidate target cell is maintained at or above a preset threshold for a preset time period, or both exceeds the preset threshold for a preset number of times within the preset time period; for another example, the perceived measurement quantity of the candidate target cell is better than the perceived measurement quantity of the serving cell in a preset time period, or the number of times that the perceived measurement quantity of the serving cell is exceeded in the preset time period reaches a preset number of times; for another example, the perceived measurement of the candidate target cell is better than the third threshold for a predetermined period of time, while the perceived measurement of the serving cell is lower than the fourth threshold for the predetermined period of time.

Optionally, in at least one embodiment of the present application, the perceived measurement includes at least one of:

a121, a first level measurement, the first level measurement comprising at least one of: the result of the operation of the I-path data and the Q-path data of the frequency domain channel response of the receiving object (i.e., the operation result of the I-path data and the Q-path data), the result of the frequency domain channel response of the receiving object (e.g., the result of the frequency domain channel response may be obtained by means of channel estimation; typically, the result of the frequency domain channel response is in complex form), the amplitude of the frequency domain channel response of the receiving object, the phase of the frequency domain channel response of the receiving object, the I-path data of the frequency domain channel response of the receiving object, the Q-path data of the frequency domain channel response of the receiving object, the receiving object including the receiving signal or the receiving channel;

Alternatively, the above-mentioned operations may include addition, subtraction, multiplication, division, matrix addition, subtraction, multiplication, matrix transposition, trigonometric relation operation, square root operation, power operation, etc., and threshold detection results, maximum/minimum value extraction results, etc. of the above-mentioned operation results; the operations also include fast fourier transform (Fast Fourier Transform, FFT)/inverse fast fourier transform (Inverse Fast Fourier Transform, IFFT), discrete fourier transform (Discrete Fourier Transform, DFT)/inverse discrete fourier transform (Inverse Discrete Fourier Transform, IDFT), 2D-FFT, 3D-FFT, matched filtering, autocorrelation operation, wavelet transform, digital filtering, and the like, and threshold detection results, maximum/minimum value extraction results, and the like of the above operation results.

For example, the result of the operation performed on the I-way data and the Q-way data may be determined according to i×cos (theta) +q×sin (theta), where theta is a certain angle value, I represents the I-way data, and Q represents the Q-way data.

A122, a second level measurement, the second level measurement comprising at least one of: delay, doppler, angle, signal strength;

the second level measurement can be regarded as a basic measurement.

A123, third level measurement quantity, comprising at least one of: sensing the distance of the target, sensing the speed of the target, sensing the orientation of the target, sensing the spatial position of the target and sensing the acceleration of the target;

the third level measurement may be regarded as a basic property/state of the perception target.

Optionally, the above-mentioned perception measurement may further include corresponding tag information, which includes at least one of the following:

b301, perception signal identification information

B302, perception measurement configuration identification information

B303, awareness traffic information (e.g., awareness traffic ID)

B304, data subscription ID

B305, measurement volume usage (communication, perception, sense of general)

B306, time information

B307, awareness node information (e.g. UE ID, node location, device orientation)

B308, sense link information (e.g., sense link sequence number, transmit-receive node identification)

B309, measurement quantity specification information (form e.g. amplitude, phase, complex number, resource information e.g. antenna/antenna pair/antenna group, PRB, symbol)

B310, measurement quantity index information (e.g., SNR, perceived SNR).

A13, the perception result of the candidate target cell meets a third preset condition;

for example, the perceived result of the candidate target cell is better than the perceived result of the source cell within a preset period of time.

Optionally, in at least one embodiment of the present application, the sensing result includes at least one of the following:

the method comprises the steps of sensing the shape of a target, the outline of the target, the existence of the target, the track of the target, the action of the target, the expression of the target, the vital sign of the target, the number of the targets, the imaging result of the target, weather, air quality, the material of the target, the composition of the target, the gesture of the target, the breathing frequency of the target, the heartbeat frequency of the target and the sleep quality of the target.

For example, the contours of the perceived objects are constructed in a 3D reconstruction (reconstruction) manner.

A14, parameter information of a first target signal used by the candidate target cell meets the requirement of perceived quality of service (QoS);

it is understood here that the parameter information of the first target signal used by the candidate target cell meets the QoS minimum configuration requirement.

Optionally, in at least one embodiment of the present application, the parameter information includes at least one of:

a1401, waveform;

such as orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplex, OFDM), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), orthogonal time-frequency space (Orthogonal Time Frequency Space, OTFS), frequency modulated continuous wave (Frequency Modulated Continuous Wave, FMCW), pulsed signals, and the like.

A1402, subcarrier spacing;

for example, the subcarriers of an OFDM system are spaced 30KHz apart.

A1403, guard interval;

the guard interval refers to a time interval from a signal end transmission time to a time when a latest echo signal of the signal is received; the parameter is proportional to the maximum perceived distance; for example, it can be calculated by 2dmax/c, where dmax is the maximum perceived distance (belonging to the perceived demand), for example, for a perceived signal that is spontaneously received, dmax represents the maximum distance from the perceived signal receiving point to the signal transmitting point; in some cases, an OFDM signal Cyclic Prefix (CP) may function as a minimum guard interval.

A1404, bandwidth;

it should be noted that this parameter is inversely proportional to the distance resolution, and can be obtained by c/(2×delta_d), where delta_d is the distance resolution (belonging to the perception requirement); c is the speed of light.

A1405, perceived frame (burst) duration;

it should be noted that, the burst duration is inversely proportional to the rate resolution (belonging to the sensing requirement), which is the time span of the sensing signal, mainly for calculating the doppler frequency offset; the parameter can be calculated by c/(2×delta_v×fc); where delta_v is the speed resolution; fc is the carrier frequency of the sense signal.

A1406, time domain interval;

it should be noted that, the time interval may be calculated by c/(2×fc×v_range); where v_range is the maximum rate minus the minimum rate (belonging to perceived demand); the parameter is the time interval between two adjacent sense signals.

A1407, power information;

the power information includes transmitting power, peak power, average power, total power, power spectrum density, EIRP, power per port, etc.; for example, the transmit power takes a value every 2dBm from-20 dBm to 23 dBm.

1408, signal format;

for example, the signal format may be: sounding reference signals (Sounding Reference Signal, SRS), demodulation reference signals (Demodulation Reference Signal, DMRS), positioning reference signals (Positioning Reference Signal, PRS), etc., or other predefined signals, as well as related sequence formats (sequence formats associated with sequence content or sequence length, etc.).

A1409, signal direction;

for example, the signal direction may be the direction of the perceived signal or beam information.

A1410, beam information;

a1411, quasi co-location (QCL) relationship;

for example, the first target signal includes a plurality of resources, each of which is associated with an SSB QCL, the QCL including Type a, B, C or D.

A1412, antenna configuration parameters;

it should be noted that, the parameter is applicable to the receiving and transmitting of the sensing signal by the multi-antenna device; for example, at least one of the number of antenna ports, the number of antenna units, the distance between antenna units, the number of reception channels, the number of transmission antennas, and the number of (maximum) uplink or downlink MIMO layers.

A15, sensing the state change of the target;

it should be noted that the state of the sensing target includes, but is not limited to, a position, a speed, and the like.

A16, the position of the terminal is changed;

a17, the communication index of the serving cell and/or the communication index of the candidate target cell received by the terminal meet a fourth preset condition;

for example, the communication index of the candidate target cell is maintained at or above a preset threshold for a preset time period, or both exceed the preset threshold for a preset number of times within the preset time period. For another example, the communication index of the candidate target cell is better than the communication index of the serving cell for a preset period of time.

Alternatively, in such a case, a handover event may be included, but is not limited to, the following table 1.

Table 1 handover event definition

Taking the A3 event as an example, the meaning of each parameter of the entry condition and the exit condition is as follows:

Mn: neighbor cell measurement results without considering any offset;

ofn: a neighbor cell measuring object specific offset;

ocn: neighbor cell level specific offset;

mp: spCell (primary serving cell) measurements, without considering any offset;

ofp: spCell measures the specific offset of the object;

ocp: spCell cell level specific offset;

hys: hysteresis parameters of the event;

off: offset parameters for the event.

In order to avoid ping-pong handover, a timeToTrigger parameter is configured for each event in a base station condtiggerconfig, when the quality of the L3 filtering signals of one or more candidate cells in the timeToTrigger time meets the entry condition of the event, the UE takes the cell meeting the condition as a trigger cell, and selects one execution condition reconfiguration in the trigger cell.

It should be noted that the handover events listed in table 1 can be understood as handover execution conditions of the conventional CHO (conditional handover ).

Optionally, in at least one embodiment of the present application, the communication index includes at least one of:

a171, reference Signal Received Power (RSRP);

a172, reference Signal Received Quality (RSRQ);

a173, signal-to-interference and noise ratio (SINR);

a174, received Signal Strength Indication (RSSI).

Optionally, in at least one embodiment of the present application, the configuration parameter includes at least one of:

a21, the perception capability of the candidate target cell;

optionally, the sensing capability includes at least one of:

the method comprises the steps of sensing coverage, maximum bandwidth available for sensing, maximum sustainable time of sensing service, type of sensing signals which can be supported, frame format, antenna array information and supported sensing modes (the sensing modes related in the application mainly comprise uplink air interface sensing and downlink air interface sensing).

A22, parameter information of a first target signal used by the candidate target cell;

it should be noted that, the explanation of the parameter information in this case may be referred to the above description, and will not be repeated here.

A23, resource information of a first target signal used by the candidate target cell;

optionally, the resource information includes at least one of:

a231, time domain resources of the first target signal;

for example, the slot index where the first target signal is located or the symbol index of the slot; wherein the time domain resources are divided into two types, one is a disposable time domain resource, for example, one symbol transmits one omni-directional first signal; a non-disposable time domain resource, e.g., a plurality of sets of periodic time domain resources or discontinuous time domain resources (which may include a start time and an end time), each set of periodic time domain resources transmitting a first target signal in the same direction, the beam directions on the periodic time domain resources of different sets being different.

A232, frequency domain resources of the first target signal;

optionally, the frequency domain resource includes a center frequency point, a bandwidth, an RB, or a subcarrier of the perceptual signal, and the like.

A24, cell identification of the candidate target cell;

a25, random access channel parameters of the candidate target cell;

optionally, the configuration parameters should also include configuration parameters of candidate target cells of legacy CHO.

Optionally, before the terminal performs cell or network side device handover, the terminal needs to perform measurement reporting first, and in at least one embodiment of the present application, before the terminal receives a handover configuration sent by the first network side device, the method further includes:

step 204, the terminal receives first measurement control information sent by a first network device;

step 205, the terminal performs measurement of a serving cell and/or a neighboring cell according to the first measurement control information, and obtains a first measurement result;

step 206, the terminal reports the second measurement result to the first network side device;

wherein the first measurement control information includes:

at least one second target signal of a serving cell and/or a neighbor cell which the terminal needs to measure, and measurement content which the terminal needs to report; the measurement content comprises at least one of the following: communication index, perception performance evaluation index, perception measurement quantity, perception result and performance index of target parameter; the second measurement result is a measurement result for the measurement content;

The second target signal includes at least one of: a sense signal, a synchronization signal, a reference signal, and a data signal.

It should be noted that, the performance index of the target parameter is obtained based on data processing of the target parameter, and optionally, in at least one embodiment of the present application, the performance index of the target parameter includes at least one of the following:

c11, variance of residual error of the target parameter;

the residual is: the difference between the measured value of the second perceived frame for the target parameter and the predicted value of the first perceived frame for the corresponding target parameter of the second perceived frame; the variance or standard deviation of the residual may be calculated in a sliding window manner.

C12, standard deviation of residual errors of target parameters;

c13, predicting error covariance of the target parameter;

c14, state estimation error covariance of the target parameters;

it should be noted that both C13 and C14 may be obtained during the execution of the prediction algorithm.

Optionally, the target parameter includes at least one of:

c21, sensing the radial distance of the target relative to the radar;

c22, sensing the radial speed of the target relative to the radar;

c23, sensing the angle of the target relative to the radar;

Optionally, the angle may include, but is not limited to, at least one of: direction angle, pitch angle.

It should be noted that, the above-mentioned C21-C23 may be regarded as the target parameter in the polar coordinate system directly acquired by the radar detection.

C24, sensing coordinates of the target under an inertial system;

optionally, the coordinates may further include at least one of: x-axis coordinates, y-axis coordinates, z-axis coordinates.

C25, sensing the speed of the target under an inertial system;

optionally, the speed may further comprise at least one of: x-direction velocity, y-direction velocity, z-direction velocity.

It should be noted that, the above-mentioned C24 to C25 may be regarded as target parameters under the inertial system after the coordinate change.

Optionally, after the terminal accesses one candidate target cell, the sensing process may be performed on the target cell, and in a specific implementation manner, after the terminal initiates random access to at least one candidate target cell that meets the handover condition according to the first measurement result of at least one first target signal, the method further includes one of the following:

step 207, the terminal receives a third target signal sent by a second network side device, and feeds back a sensing measurement quantity to the second network side device or a core network device;

It should be noted that, the third target signal includes at least one of the following: a sense signal, a synchronization signal, and a reference signal. The situation refers to downlink sensing, that is, the terminal receives a sensing signal, a synchronization signal and/or a reference signal of the network side device accessed after the handover.

Step 208, the terminal sends at least one of a reference signal, a sensing signal and a data signal to the second network side device;

it should be noted that, this case refers to uplink sensing, that is, the terminal sends a sensing signal, a synchronization signal and/or a reference signal, and the sensing is performed by the network side device accessed after the handover.

Here, the second network side device is associated with at least one candidate target cell that satisfies the handover condition, for example, the second network side device is a network side device to which a certain candidate target cell belongs, and when the candidate target cell is a network side device, the second network side device is one of the candidate target cells.

It should be noted that, because the terminal receives the switching configuration sent by the first network side device, the main implementation manner of sending the switching configuration to the terminal by the first network side device includes:

Step S11, the first network side equipment acquires a judging result of whether to use condition switching or not;

optionally, this step mainly includes one of the following implementations:

in a first implementation manner, the first network side device obtains a judgment result of whether to use conditional switching according to first information, where the first information includes: at least one of a second measurement result reported by the terminal, a third measurement result of the service cell to the terminal, a fourth measurement result of the neighbor cell to the terminal, and sensing capabilities of the first network side device and a plurality of candidate target cells;

in this case, the first network side device determines whether to use the conditional switch, the third measurement result of the serving cell to the terminal is obtained by measuring the signal sent by the first network side device to the terminal, and the fourth measurement result of the neighboring cell to the terminal is obtained by measuring the signal sent by the neighboring cell to the terminal and is sent to the first network side device.

Optionally, the method for obtaining the third measurement result of the terminal by the serving cell includes:

the first network side equipment receives second measurement control information sent by core network equipment;

the first network side equipment performs terminal measurement according to the second measurement control information, and obtains a third measurement result of the service cell to the terminal;

Wherein the second measurement control information includes:

at least one fourth target signal sent by a terminal of which the serving cell needs to measure, and measurement content which needs to be acquired by the serving cell, wherein the measurement content comprises at least one of the following: a perception performance evaluation index, a perception measurement quantity, a perception result and a performance index of a target parameter; the third measurement result is the measurement result of the measurement content;

the fourth target signal comprises at least one of: a sense signal, a synchronization signal, a reference signal, and a data signal.

Optionally, the acquiring manner of the fourth measurement result of the terminal by the neighboring cell includes:

the neighboring cell receives second measurement control information sent by core network equipment;

the neighbor cell performs measurement of the terminal according to the second measurement control information, and a fourth measurement result of the neighbor cell on the terminal is obtained;

wherein the second measurement control information includes:

the method comprises the steps that a terminal needing to be measured in a neighboring cell sends at least one fourth target signal and measurement content needing to be acquired in the neighboring cell, wherein the measurement content comprises at least one of the following: a perception performance evaluation index, a perception measurement quantity, a perception result and a performance index of a target parameter; the third measurement result is a measurement result of the measurement content.

It should be further noted that, when downlink sensing is performed between the terminal and the first network side device, the first network side device needs to determine whether to switch the use condition based on the second measurement result reported by the terminal; when uplink sensing is performed between the terminal and the first network side device, the first network side device needs to determine whether to use conditional switching based on a third measurement result of the serving cell to the terminal and/or a fourth measurement result of the neighboring cell to the terminal.

In the second implementation manner, the first network side device receives a judging result of whether to use condition switching sent by the core network device;

that is, the result of the judgment as to whether or not to use the conditional handover in this case is determined by the core network device and sent to the first network side device; the core network device determines whether to use the conditional handover based on the first information, except that the first information needs to be reported to the core network device by the first network device.

Step S12, the first network side equipment sends a switching request signaling to a plurality of candidate target cells meeting the switching conditions under the condition that the judging result indicates the switching of the using conditions;

Step S13, the first network side equipment sends switching configuration to the terminal after receiving the switching request confirmation of the candidate target cell.

That is, after obtaining the result of the judgment of whether to use the conditional handover, the first network side device needs to send a handover request signaling to the cell to which the terminal needs to be handed over, and after obtaining the acknowledgement of the handover request of the cell, the first network side device can send the handover condition and the configuration parameter including the cell to the terminal.

It should be further noted that, after the terminal switches to access to the new network side device, the network side device to which the terminal has been accessed before needs to exit the sensing flow, and optionally, the first network side device receives a sensing flow exit instruction sent by the second network side device or the core network device;

the sensing flow exit indication is used for informing the first network side device to exit the sensing flow.

It should be noted that, the first network side device may exit the sensing procedure in one of the following manners:

perceived hard handoff: before the terminal and the second network side equipment start to perceive the service, the first network side equipment exits from the perceived service;

perceived soft handoff: after the terminal and the second network side equipment start to perceive the service, the first network side equipment exits from the perceived service.

It should be noted that, the flow of the perceived service in the embodiment of the present application mainly includes:

the sensing equipment firstly acquires sensing requirements, then senses based on the sensing measurement quantity and the measurement configuration information and based on the received sensing signals to obtain sensing measurement quantity corresponding to the sensing signals, and the sensing equipment can obtain corresponding sensing results based on the sensing measurement quantity obtained by sensing, and can also send the sensing measurement quantity obtained by sensing to other equipment to obtain corresponding sensing results by the other equipment; and finally, the sensing result needs to be transmitted to a sensing demander.

It should be noted that the above-mentioned perceived requirements include at least one of the following:

d11, perception target area: refers to a position area where a perception target may exist or a position area where imaging or three-dimensional reconstruction is required;

d12, perception target type: and classifying the perceived target according to possible motion characteristics of the perceived target, wherein each perceived target type comprises information such as the motion speed, the motion acceleration, the typical RCS and the like of the typical perceived target.

D13, perceived QoS: performance metrics for sensing a perceived target area or perceived target, including at least one of: sensing resolution (further, may be divided into ranging resolution, angular resolution, speed measurement resolution, imaging resolution), sensing accuracy (further, may be divided into ranging accuracy, angular accuracy, speed measurement accuracy, positioning accuracy, etc.), sensing range (further, may be divided into ranging range, speed measurement range, angular range, imaging range, etc.), sensing delay (time interval from sensing signal transmission to obtaining sensing result, or time interval from sensing demand initiation to obtaining sensing result), sensing update rate (time interval between performing sensing twice and obtaining sensing result), detection probability (probability of being correctly detected in the case of sensing target existence), false alarm probability (probability of being erroneously detected in the case of sensing target nonexistence).

The measurement configuration information includes: identification information of a sense signal corresponding to a measurement quantity (e.g., sense signal information corresponding to a sense measurement quantity, time information, frequency information, base station or TRP information transmitting a sense signal, antenna port information transmitting a sense signal, receiving antenna information of a third device, etc.), a measured period, etc

It should be further noted that, in the embodiment of the present application, the core network device may also be referred to as a network-aware function/network element-aware/management-aware function (Sensing Management Function, sensor mf), which may be located at a Radio Access Network (RAN) side or a core network side, and refers to a network node in the core network and/or the RAN that is responsible for at least one function such as handling a sensing request, scheduling a sensing resource, interaction of sensing information, and processing sensing data, and may be based on an access mobility management function (Access and Mobility Management Function, AMF) or a location management function (Location Management Function, LMF) upgrade in an existing 5G network, or may be another network node or a newly defined network node.

It should be noted that, the core network device according to the embodiment of the present application may include, but is not limited to, at least one of the following: a core network node, a core network function, a mobility management entity (Mobility Management Entity, MME), an AMF, an LMF, a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), a policy control function (Policy Control Function, PCF), a policy and charging rules function (Policy and Charging Rules Function, PCRF), an edge application service discovery function (Edge Application Server Discovery Function, EASDF), a unified data management (Unified Data Management, UDM), a unified data repository (Unified Data Repository, UDR), a home subscriber server (Home Subscriber Server, HSS), a centralized network configuration (Centralized network configuration, CNC), a network storage function (Network Repository Function, NRF), a network opening function (Network Exposure Function, NEF), a Local NEF (Local NEF, or L-NEF), a binding support function (Binding Support Function, BSF), an application function (Application Function, AF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

It should be noted that, in the embodiment of the present application, the sensing signal may be a signal having only a sensing function and not including a communication function, such as an existing LTE/NR synchronization signal or a reference signal, where the signal is based on a pseudo-random sequence, and includes an m-sequence, a Zadoff-Chu sequence, a Gold sequence, and the like; it may also be a single frequency Continuous Wave (CW), a frequency modulated Continuous Wave (Frequency Modulated CW, FMCW), an ultra wideband gaussian pulse, etc. commonly used for radars; the method can also be a special sensing signal with a new design, which has good correlation characteristics and low peak-to-average power ratio (PAPR), or a general sensing integrated signal with a new design, which has both sensing function and communication function. In the embodiment of the application, the sensing signal or the sense-all integrated signal is collectively referred to as a sensing signal.

The following describes specific applications of the present application by taking a case where a terminal (UE) and a base station (gNB) perform a sensing service and the terminal performs a handover between different base stations as an example.

Specific application case one, downlink perception: the base station is changed, and the terminal is unchanged

The network architecture in this case is shown in fig. 4, and the specific implementation flow includes:

step S101: the source base station transmits first measurement control information to the terminal; the first measurement control information includes information that the UE needs to measure, including:

At least one second target signal of a serving cell and/or a neighbor cell which is required to be measured by the UE and measurement content which is required to be reported by the terminal; the measurement content comprises at least one of the following: communication index, perception performance evaluation index, perception measurement quantity, perception result and performance index of target parameter.

Step S102: the UE measures the information of a service cell (namely the source base station) and a neighbor cell according to first measurement control information sent by the source base station and reports a first measurement result;

step S103: the source base station or the core network equipment decides whether to switch the using condition according to at least one of a first measurement result reported by the UE, a measurement result of the source base station (corresponding to the third measurement result of the serving cell to the terminal), a measurement result of a neighbor cell of the source base station (corresponding to the fourth measurement result of the neighbor cell to the terminal), and the sensing capability of the source base station and a plurality of candidate target base stations;

the measurement result of the source base station neighbor cell needs to be sent to the source base station or core network equipment;

the measurement result of the source base station and the measurement result of the source base station neighbor cell are obtained by measuring information sent by the terminal based on second measurement control information sent by the core network equipment.

For example, the second measurement control information sent by the core network device to the source base station neighboring cell includes at least one of the following:

the method comprises the steps that a terminal needing to be measured in a neighboring cell sends at least one fourth target signal and measurement content needing to be acquired in the neighboring cell, wherein the measurement content comprises at least one of the following: a perception performance evaluation index, a perception measurement quantity, a perception result and a performance index of a target parameter; the fourth target signal comprises at least one of: a sense signal, a synchronization signal, a reference signal, and a data signal.

For example, the communication index of the one or more second target signals of the serving cell received by the UE is below a first threshold; for example, the RSRP of the second target signal is below the first threshold (e.g., -100 dBm), thus deciding to use a conditional handover; or alternatively, the first and second heat exchangers may be,

the perception performance evaluation index of one or more second target signals of the serving cell received by the UE is lower than a second threshold; for example, the perceived SNR of the second target signal is below a second threshold, thus deciding to use a conditional handover; or,

the UE does not meet the first requirement by receiving the sensing measurement or sensing result of one or more second target signals of the serving cell, for example, the expected sensing target cannot be found in the delay-doppler spectrum obtained according to the second target signals, or the amplitude of the delay-doppler spectrum related to the sensing target in the delay-doppler spectrum obtained according to the second target signals does not reach the expected threshold, so that the use condition is decided to switch; or,

The performance index of the target parameter obtained by the UE by receiving one or more second target signals of the serving cell does not meet the second requirement, and thus decides to use the conditional handover.

Step S104: if the source base station decides to use the conditional switch, sending a switch REQUEST (HANDOVER REQUEST) signaling to a plurality of candidate target base stations meeting the CHO condition according to the own switch strategy;

steps S105 to S106: the candidate target base station receives the switching request and then performs access control, and if the candidate target base station agrees with the conditional switching, the candidate target base station feeds back a switching request confirmation to the source base station (HANDOVER REQUEST ACKNOWLEDGE);

step S107: after receiving the switching request confirmation of the candidate target base station, the source base station transmits switching configuration to the UE through a radio resource control reconfiguration (RRCRECONfigure) message, wherein the switching configuration comprises switching conditions of the candidate target base station and configuration parameters of the candidate target base station; wherein the handover condition includes at least one of:

at least one perception performance evaluation index meets a first preset condition;

at least one of the perceived metrics satisfying a second preset condition;

at least one sensing result meets a third preset condition within a preset time period;

the parameter information of the first target signal used by at least one candidate target sensing node meets the minimum configuration requirement of the sensing QoS;

Sensing the change of the state of the target;

the position of the UE changes;

the communication index of the serving cell and/or the communication index of the candidate target cell received by the UE meet a fourth preset condition.

It should be noted that, the configuration parameters of the candidate target base station include at least one of the following in addition to the configuration parameters of the candidate target base station of the conventional CHO: the perception capability of the candidate target base station, the parameter information and the resource information of the first target signal of the candidate target base station and the like;

it should be noted that firstly, whether the switching condition is satisfied or not is judged, and the randomness/ping-pong effect caused by single result judgment can be avoided according to the average value (layer 1 filtering and/or layer 3 filtering) of the multiple measurement quantities/indexes at different times; the second synchronization signal/reference signal/sensing signal may correspond to a plurality of receiving/transmitting beam pairs (beam pairs), and whether the switching condition is satisfied may be determined according to the measurement quantity/index of one or more beams.

Step S108: after receiving the switching configuration of the source base station, the UE sends a radio resource control reconfiguration complete (RRCRECONfigure complete) message to the source base station;

step S108a: if the source base station decides that the handover uses early data forwarding (early data forwarding), forwarding the user data and the state information of the Secondary Node (SN) corresponding to the user data to the candidate target base station through an early state transition (EARLY STATUS TRANSFER) message; optionally, the source base station forwards the perceived context information to the candidate target base station; the sensing context information includes sensing measurement quantity, sensing result and the like (such as speed measurement, distance measurement, angle measurement result and the like of radar class, target frequency of respiration class and the like) of a target object obtained by the UE;

Wherein the SN status information includes a superframe number (Hyper Frame Number, HFN) and PDCP-SN of a first packet data convergence protocol data unit (PDCP SDU) forwarded by the source base station to the target base station;

step S109: after receiving the switching configuration, the UE measures one or more sensing signals/synchronizing signals/reference signals of a candidate target base station, and when a certain candidate target base station meets the switching condition, the UE starts to execute the switching process; if the plurality of candidate target base stations meet the switching condition, selecting which cell to switch belongs to the UE implementation.

Step S110: the UE initiates random access to the target cell meeting the switching condition and successfully accesses the target cell;

the UE and the target cell start sensing service, which comprises that the UE receives a synchronous signal/reference signal/sensing signal sent by the target base station, and the UE feeds back sensing measurement quantity to the target base station or core network equipment;

step S111: the UE sends RRCRECONfigure complete message to the target cell, and the CHO handover is successful.

Step S111a: after receiving the reconfiguration complete message of the UE, the target base station sends a HANDOVER SUCCESS (HANDOVER SUCCESS) message to the source base station to inform that the UE has successfully accessed to the target cell;

step S111b: the source base station feeds back SN state information to the target base station through SN STATUS TRANSFER information; if the source base station forwards the data and selects to use the advanced data forwarding (late data forwarding), forwarding the user data to the side of the target base station after receiving the successful message of the switching of the target base station;

Step S111c: the source base station sends a HANDOVER CANCEL (HANDOVER CANCEL) message to the other candidate target base stations informing them of the release of reserved resources and buffered data for the HANDOVER UE.

The target base station or the core network equipment informs the source base station to exit the sensing flow, which comprises the following two exit modes:

perceived hard handoff: before the UE and the target base station start to perceive the service, the source base station exits the perceived service;

perceived soft handoff: after the UE and the target base station start to perceive the service, the source base station exits the perceived service;

it should be noted that some actions of the source base station and the target base station in the above steps, for example, step S103 and step S105, may also require participation of the core network device.

Specific application case two, uplink perception: the base station is changed, and the terminal is unchanged

The network architecture in this case is shown in fig. 5, and the specific implementation flow includes:

step S201: the source base station transmits first measurement control information to the UE; the first measurement control information comprises information that the UE or the base station needs to measure, and the first measurement control information comprises at least one of the following:

Step S202: the UE measures the information of a service cell (namely the source base station) and a neighbor cell according to first measurement control information sent by the source base station and reports a first measurement result;

step S203: the source base station or the core network equipment decides whether to switch the using condition according to at least one of a first measurement result reported by the UE, a measurement result of the source base station (corresponding to the third measurement result of the serving cell to the terminal), a measurement result of a neighbor cell of the source base station (corresponding to the fourth measurement result of the neighbor cell to the terminal), and the sensing capability of the source base station and a plurality of candidate target base stations;

For example, the base station decides to use a conditional handover when one of the following is satisfied:

the base station receives that the communication index of one or more fourth target signals sent by the UE is lower than a first threshold; wherein the communication index comprises at least one item such as RSRP, SINR, RSRQ, RSSI; for example, the RSRP of the fourth target signal is below the first threshold (-100 dBm); or (b)

The base station receives that the perceived performance evaluation index of one or more fourth target signals sent by the UE is lower than a second threshold; for example, the perceived SNR of the fourth target signal is below the second threshold (5 dB); or (b)

The base station does not meet the first requirement by receiving the sensing measurement quantity/sensing result obtained by one or more fourth target signals sent by the UE, for example, the sensing measurement quantity cannot obtain the measurement quantity related to the sensing target; or (b)

The performance index of the target parameter obtained by the base station receiving the one or more fourth target signals sent by the UE does not meet the second requirement.

Wherein the fourth target signal is a reference signal and/or a sense signal, and the fourth target signal is transmitted by the UE.

Step S204: if the source base station decides to switch the using condition, transmitting a HANDOVER REQUEST signaling to a plurality of candidate target base stations meeting the CHO condition according to the switching strategy of the source base station;

Steps S205 to S206: the candidate target base station receives the switching request and then performs access control, and if the candidate target base station agrees with the conditional switching, the candidate target base station feeds back HANDOVER REQUEST ACKNOWLEDGE to the source base station;

step S207: after receiving the switching request confirmation of the candidate target base station, the source base station transmits switching configuration to the UE through RRCRECONfigure information, wherein the switching configuration comprises switching conditions of the candidate target base station and configuration parameters of the candidate target base station; wherein the handover condition includes at least one of:

at least one of the perceived metrics satisfying a second preset condition;

sensing the change of the state of the target;

the position of the UE changes;

It should be noted that firstly, whether the switching condition is satisfied or not is judged, and the randomness/ping-pong effect caused by single result judgment can be avoided according to the average value (layer 1 filtering and/or layer 3 filtering) of the multiple measurement quantities/indexes at different times; and the second synchronous signals/reference signals/sensing signals can correspond to the plurality of receiving/transmitting beam pairs, and whether the switching condition is met can be judged according to the measurement quantity/index of one or more beams.

Step S208: after receiving the switching configuration of the source base station, the UE sends RRCRECONfigure complete message to the source base station;

step S208a: if the source base station decides to use early data forwarding for the present switch, forwarding the user data and SN status information corresponding to the user data to the candidate target base station through EARLY STATUS TRANSFER message; optionally, the source base station forwards the perceived context information to the candidate target base station; the sensing context information comprises sensing measurement quantity, sensing result and the like (such as speed and distance measurement and angle measurement result of radar class, target frequency of respiration class and the like) of a target object obtained by a source base station;

the SN state information comprises HFN and PDCP-SN of a first PDCP SDU forwarded to the target base station by the source base station;

Step S209: after receiving the switching configuration, the UE measures one or more sensing signals/synchronizing signals/reference signals of a candidate target base station, and when a certain candidate target base station meets the switching condition, the UE starts to execute the switching process; if the plurality of candidate target base stations meet the switching condition, selecting which cell to switch belongs to the UE implementation.

Step S210: the UE initiates random access to the target cell meeting the switching condition and successfully accesses the target cell; the UE and the target cell start to sense services, including the target base station receiving reference signals/sensing signals sent by the UE and the base station feeding back sensing measurement quantity to the core network equipment;

step S211: the UE sends RRCRECONfigure complete message to the target cell, and the CHO handover is successful.

Step S211a: after receiving the reconfiguration completion message of the UE, the target base station sends a HANDOVER SUCCESS message to the source base station to inform that the UE has successfully accessed to the target cell;

step S211b: the source base station feeds back SN state information to the target base station through SN STATUS TRANSFER information; if the source base station forwards the data and selects late data forwarding to use, after receiving the successful message of switching the target base station, forwarding the user data to the target base station side;

Step S211c: the source base station sends a HANDOVER CANCEL message to the other candidate target base stations informing them to release reserved resources and buffered data for the HANDOVER UE.

perceived soft handoff: after the UE and the target base station start to perceive the service, the source base station exits the perceived service.

It should be noted that some actions of the source base station and the target base station in the above steps, for example, step S203 and step S205, may also require participation of the core network device.

As can be seen from the above, the embodiment of the present application can enable the terminal to select the target base station according to the measurement result and initiate the handover execution process of the sense-of-general integration, and can avoid UE handover failure caused by UE radio link state change.

As shown in fig. 6, an embodiment of the present application provides a communication method, including:

step 601, a first network side device sends a switching configuration to a terminal, where the switching configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

Wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the first network side device sends a handover configuration to a terminal, including:

the first network side equipment acquires a judging result of whether to use condition switching or not;

the first network side equipment sends a switching request signaling to a plurality of candidate target cells meeting the switching conditions under the condition that the judging result indicates the switching of the using conditions;

And the first network side equipment sends the switching configuration to the terminal after receiving the switching request confirmation of the candidate target cell.

Optionally, the first network side device obtains a result of determining whether to use conditional switching, including:

the first network side equipment receives a judging result of whether to use condition switching sent by core network equipment; or alternatively

The first network side equipment obtains a judging result of whether to use condition switching according to first information, wherein the first information comprises: at least one of a second measurement result reported by the terminal, a third measurement result of the serving cell to the terminal, a fourth measurement result of the neighbor cell to the terminal, and sensing capabilities of the first network side device and the plurality of candidate target cells.

Optionally, before the first network side device receives the determination result of whether to use the conditional handover sent by the core network device, the method further includes:

and sending the first information to the core network equipment.

Optionally, the method for obtaining the third measurement result of the serving cell to the terminal includes:

Wherein the second measurement control information includes:

Optionally, before the first network side device obtains the judging result of whether to use the conditional switching, the method further includes:

the first network side equipment sends first measurement control information to a terminal;

the first network side equipment receives a first measurement result sent by a terminal;

wherein the first measurement control information includes:

at least one second target signal of a serving cell and/or a neighbor cell which the terminal needs to measure, and measurement content which the terminal needs to report; the measurement content comprises at least one of the following: communication index, perception performance evaluation index, perception measurement quantity, perception result and performance index of target parameter;

The second measurement result is a measurement result for the measurement content;

Optionally, the method further comprises:

the first network side equipment receives a perceived flow exit instruction sent by the second network side equipment or the core network equipment;

Optionally, the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

parameter information of a first target signal used by the candidate target cell;

resource information of a first target signal used by the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

Time domain resources of the first target signal;

and frequency domain resources of the first target signal.

Optionally, the perceptual capability includes at least one of:

the method comprises the steps of sensing coverage, maximum bandwidth available for sensing, maximum sustainable time of sensing service, type of sensing signal which can be supported, frame format, antenna array information and sensing mode which can be supported.

Optionally, the communication index includes at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

Optionally, the perceptual performance evaluation index includes at least one of:

perceived signal-to-noise ratio, SNR;

sensing SINR;

a statistic of multiple measurements of the same perceived measurement, the statistic comprising: mean, standard deviation or variance;

sensing a first deviation of a predicted value of a measured value and a statistical result of the first deviation;

a second deviation of the predicted value and the measured value of the sensing result and a statistical result of the second deviation;

echo signal power.

Optionally, the perceptual measurement comprises at least one of:

a first-stage measurement quantity comprising at least one of: the method comprises the steps of calculating an I path data and a Q path data of a frequency domain channel response of a receiving object, calculating a frequency domain channel response result of the receiving object, calculating a frequency domain channel response amplitude of the receiving object, calculating a frequency domain channel response phase of the receiving object, calculating an I path data and a Q path data of the frequency domain channel response of the receiving object, and calculating a Q path data of the frequency domain channel response of the receiving object, wherein the receiving object comprises a receiving signal or a receiving channel;

A second-level measurement, the second-level measurement comprising at least one of: delay, doppler, angle, signal strength;

a third level measurement, the third level measurement comprising at least one of: the distance of the sensing target, the speed of the sensing target, the orientation of the sensing target, the spatial position of the sensing target and the acceleration of the sensing target.

Optionally, the perceived result includes at least one of:

Optionally, the performance index of the target parameter includes at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

Wherein the target parameters include at least one of:

the radial distance of the sensing target relative to the radar, the radial speed of the sensing target relative to the radar, the angle of the sensing target relative to the radar, the coordinates of the sensing target under the inertial system, and the speed of the sensing target under the inertial system.

It should be noted that, in the above embodiments, all descriptions about the network side device are applicable to the embodiments of the communication method applied to the first network side device, and the same technical effects as those can be achieved, which are not repeated herein.

As shown in fig. 7, an embodiment of the present application provides a communication method, including:

step 701, the second network side device and the terminal execute a random access process;

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the method further comprises:

the second network side equipment sends a third target signal to the terminal and receives a perception measurement quantity sent by the terminal; or alternatively

The second network side equipment receives at least one of a reference signal, a sensing signal and a data signal sent by a terminal;

wherein the third target signal comprises at least one of: a sense signal, a synchronization signal, and a reference signal.

Optionally, the method further comprises:

the second network side equipment sends a perception flow exit instruction to the first network side equipment;

It should be noted that, in the above embodiments, all descriptions about the network side device are applicable to the embodiments of the communication method applied to the second network side device, and the same technical effects as those can be achieved, which are not repeated herein.

As shown in fig. 8, an embodiment of the present application provides a communication method, including:

step 801, the core network device determines whether to use the judgment result of the conditional switching;

step 802, the core network device sends the judgment result to a first network side device;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the determining, by the core network device, whether to use a result of the conditional handover includes:

The core network device receives first information sent by first network side devices, wherein the first information comprises: at least one of a second measurement result reported by the terminal, a third measurement result of the service cell to the terminal, a fourth measurement result of the neighbor cell to the terminal, and sensing capabilities of the first network side device and a plurality of candidate target cells;

and the core network equipment acquires a judging result of whether to use the conditional switching or not according to the first information.

Optionally, the perceptual capability includes at least one of:

Optionally, the method further comprises:

the core network equipment sends second measurement control information to the first network side equipment, wherein the second measurement control information is used for the first network side equipment to measure the terminal and obtain a third measurement result of the serving cell to the terminal;

wherein the second measurement control information includes:

Optionally, the method further comprises:

the core network equipment sends a perception flow exit instruction to the first network equipment;

It should be noted that, in the above embodiments, all descriptions about the core network device are applicable to the embodiments of the communication method applied to the core network device, and the same technical effects can be achieved, which are not described herein.

According to the communication method provided by the embodiment of the application, the execution main body can be a communication device. In the embodiment of the present application, a communication device is used as an example of a communication method executed by a communication device, and the communication device provided in the embodiment of the present application is described.

As shown in fig. 9, a communication device according to an embodiment of the present application is applied to a terminal, and includes:

the first receiving module 901 is configured to receive a switching configuration sent by a first network side device, where the switching configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

a first measurement module 902 configured to measure at least one first target signal of one or more candidate target cells and/or serving cells according to the handover configuration;

A processing module 903, configured to initiate random access to at least one candidate target cell that satisfies a handover condition according to a first measurement result of at least one first target signal;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, before the first receiving module 901 receives the switching configuration sent by the first network side device, the method further includes:

the second receiving module is used for receiving first measurement control information sent by the first network equipment;

The acquisition module is used for carrying out measurement of a serving cell and/or a neighbor cell according to the first measurement control information to acquire a first measurement result;

the reporting module is used for reporting the second measurement result to the first network side equipment;

wherein the first measurement control information includes:

Optionally, after the processing module 903 initiates random access to at least one candidate target cell that satisfies the handover condition according to the first measurement result of the at least one first target signal, the method further includes:

the first transmission module is configured to receive a third target signal sent by a second network side device, and feed back a sensing measurement quantity to the second network side device or a core network device, where the third target signal includes at least one of the following: a sense signal, a synchronization signal, and a reference signal; or alternatively

A third sending module, configured to send at least one of a reference signal, a sensing signal and a data signal to the second network side device;

wherein the second network side device is associated with at least one candidate target cell satisfying a handover condition.

Optionally, the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

Optionally, the perceptual capability includes at least one of:

Optionally, the communication index includes at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

Optionally, the perceptual measurement comprises at least one of:

Optionally, the sensing result includes at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

Wherein the target parameters include at least one of:

It should be noted that the embodiment of the apparatus corresponds to the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the apparatus, so that the same technical effects can be achieved.

The information transmission device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The information transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving the switching configuration sent by the first network side equipment, and the switching configuration comprises the following steps: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells; the processor is configured to measure at least one first target signal of one or more candidate target cells and/or serving cells according to the handover configuration; the communication interface is used for initiating random access to at least one candidate target cell meeting the switching condition according to a first measurement result of at least one first target signal;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the communication interface is configured to receive first measurement control information sent by the first network device;

the processor is used for carrying out measurement of a serving cell and/or a neighbor cell according to the first measurement control information to obtain a first measurement result;

the communication interface is used for reporting the second measurement result to the first network side equipment;

wherein the first measurement control information includes:

Optionally, the communication interface is further configured to:

receiving a third target signal sent by second network side equipment, and feeding back a sensing measurement quantity to the second network side equipment or core network equipment, wherein the third target signal comprises at least one of the following components: a sense signal, a synchronization signal, and a reference signal; or alternatively

Transmitting at least one of a reference signal, a sensing signal and a data signal to the second network side equipment;

Optionally, the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

The resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

Optionally, the perceptual capability includes at least one of:

Optionally, the communication index includes at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

Optionally, the perceptual measurement comprises at least one of:

Optionally, the sensing result includes at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

wherein the target parameters include at least one of:

The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 10 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1000 includes, but is not limited to: at least some of the components of the radio frequency unit 1001, the network module 1002, the audio output unit 1003, the input unit 1004, the sensor 1005, the display unit 1006, the user input unit 1007, the interface unit 1008, the memory 1009, and the processor 1010, etc.

Those skilled in the art will appreciate that terminal 1000 can also include a power source (e.g., a battery) for powering the various components, which can be logically connected to processor 1010 by a power management system so as to perform functions such as managing charge, discharge, and power consumption by the power management system. The terminal structure shown in fig. 10 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and a microphone 10042, where the graphics processor 10041 processes image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1001 may transmit the downlink data to the processor 1010 for processing; in addition, the radio frequency unit 1001 may send uplink data to the network side device. In general, the radio frequency unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory x09 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.

Wherein, the radio frequency unit 1001 is configured to:

receiving a switching configuration sent by first network side equipment, wherein the switching configuration comprises the following steps: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

the processor 1010 is configured to: measuring at least one first target signal of one or more candidate target cells and/or serving cells according to the handover configuration;

initiating random access to at least one candidate target cell meeting the switching condition;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the radio frequency unit 1001 is further configured to:

receiving first measurement control information sent by first network equipment;

the processor 1010 is further configured to: according to the first measurement control information, carrying out measurement of a serving cell and/or a neighbor cell, and obtaining a first measurement result;

the radio frequency unit 1001 is configured to: reporting the second measurement result to the first network side equipment;

wherein the first measurement control information includes:

Optionally, the radio frequency unit 1001 is further configured to:

Optionally, the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

A waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

Optionally, the perceptual capability includes at least one of:

Optionally, the communication index includes at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

Optionally, the perceptual measurement comprises at least one of:

Optionally, the sensing result includes at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

wherein the target parameters include at least one of:

Preferably, the embodiment of the present application further provides a terminal, which includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction realizes each process of the above-mentioned communication method embodiment when executed by the processor, and the process can achieve the same technical effect, so that repetition is avoided, and no description is repeated here.

The embodiment of the application also provides a readable storage medium, and the computer readable storage medium stores a program or an instruction, which when executed by a processor, implements each process of the above-mentioned communication method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

As shown in fig. 11, the embodiment of the present application further provides a communication apparatus 1100, applied to a first network side device, including:

a first sending module 1101, configured to send a handover configuration to a terminal, where the handover configuration includes: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the first sending module 1101 includes:

a first acquisition unit configured to acquire a determination result of whether to use condition switching;

a first sending unit, configured to send a handover request signaling to a plurality of candidate target cells that satisfy a handover condition, if it is determined that the determination result indicates that the use condition is to be handed over;

and the second sending unit is used for sending the switching configuration to the terminal after receiving the switching request confirmation of the candidate target cell.

Optionally, the first obtaining unit is configured to:

Optionally, before the obtaining unit first network side device receives the judging result of whether to use the conditional switching sent by the core network device, the method further includes:

And the fourth sending module is used for sending the first information to the core network equipment.

receiving second measurement control information sent by core network equipment;

measuring the terminal according to the second measurement control information, and acquiring a third measurement result of the service cell to the terminal;

wherein the second measurement control information includes:

Optionally, before the acquiring unit acquires the result of the judgment whether to use the conditional switching, the method further includes:

a fifth transmitting module, configured to transmit first measurement control information to the terminal;

the third receiving module is used for receiving the first measurement result sent by the terminal;

Wherein the first measurement control information includes:

Optionally, the apparatus further comprises:

a fourth receiving module, configured to receive a perceived flow exit instruction sent by the second network side device or the core network device;

Optionally, the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

Wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

Optionally, the perceptual capability includes at least one of:

Optionally, the communication index includes at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

Optionally, the perceptual measurement comprises at least one of:

Optionally, the sensing result includes at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

wherein the target parameters include at least one of:

It should be noted that, the embodiment of the apparatus is an apparatus corresponding to the above method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the apparatus, so that the same technical effects can be achieved, which is not described herein again.

The embodiment of the application also provides a network side device, which is a first network side device and comprises a processor and a communication interface, wherein the communication interface is used for sending a switching configuration to a terminal, and the switching configuration comprises: the handover conditions of the one or more candidate target cells and the configuration parameters of the one or more candidate target cells;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the processor is configured to obtain a result of determining whether to use the conditional switching;

the communication interface is used for sending a switching request signaling to a plurality of candidate target cells meeting the switching conditions under the condition that the judging result indicates the switching of the using conditions; and after receiving the switching request confirmation of the candidate target cell, sending switching configuration to the terminal.

Optionally, the communication interface is configured to receive a determination result sent by the core network device, where the determination result is whether to use conditional switching; or alternatively

The processor is configured to obtain a result of determining whether to use conditional switching according to first information, where the first information includes: at least one of a second measurement result reported by the terminal, a third measurement result of the serving cell to the terminal, a fourth measurement result of the neighbor cell to the terminal, and sensing capabilities of the first network side device and the plurality of candidate target cells.

Optionally, the communication interface is further configured to send the first information to a core network device.

Optionally, the communication interface is configured to receive second measurement control information sent by the core network device;

the processor is used for measuring the terminal according to the second measurement control information and obtaining a third measurement result of the service cell to the terminal;

Wherein the second measurement control information includes:

Optionally, the communication interface is further configured to send first measurement control information to the terminal; receiving a first measurement result sent by a terminal;

wherein the first measurement control information includes:

Optionally, the communication interface is further configured to receive a perceived flow exit instruction sent by the second network side device or the core network device;

Optionally, the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

Optionally, the perceptual capability includes at least one of:

Optionally, the communication index includes at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

Optionally, the perceptual measurement comprises at least one of:

Optionally, the sensing result includes at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

Wherein the target parameters include at least one of:

Preferably, the embodiment of the present application further provides a network side device, where the network side device is a first network side device, and the network side device includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction is executed by the processor to implement each process of the foregoing communications method embodiment, and the process can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Specifically, the embodiment of the application also provides a network side device, which is the first network side device. As shown in fig. 12, the network side device 1200 includes: an antenna 1201, a radio frequency device 1202, a baseband device 1203, a processor 1204, and a memory 1205. The antenna 1201 is connected to a radio frequency device 1202. In the uplink direction, the radio frequency device 1202 receives information via the antenna 1201 and transmits the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes information to be transmitted, and transmits the processed information to the radio frequency device 1202, and the radio frequency device 1202 processes the received information and transmits the processed information through the antenna 1201.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1203, and the baseband apparatus 1203 includes a baseband processor.

The baseband device 1203 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 12, where one chip, for example, a baseband processor, is connected to the memory 1205 through a bus interface, so as to call a program in the memory 1205 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 1206, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1200 of the embodiment of the present application further includes: instructions or programs stored in the memory 1205 and executable on the processor 1204, the processor 1204 invokes the instructions or programs in the memory 1205 to perform the method performed by the modules shown in fig. 6 and achieve the same technical effects, and are not described herein in detail for the sake of avoiding repetition.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned communication method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

The processor is a processor in the network side device described in the foregoing embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

As shown in fig. 13, the embodiment of the present application further provides a communication apparatus 1300, applied to a second network side device, including:

an execution module 1301, configured to execute a random access procedure with a terminal;

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the apparatus further comprises:

the second transmission module is used for sending a third target signal to the terminal and receiving the perception measurement quantity sent by the terminal; or alternatively

A fifth receiving module, configured to receive at least one of a reference signal, a sensing signal and a data signal sent by a terminal;

Optionally, the apparatus further comprises:

a sixth sending module, configured to send a perceived flow exit instruction to the first network side device;

The embodiment of the application also provides a network side device, which is second network side device and comprises a processor and a communication interface, wherein the processor is used for executing a random access process with the terminal;

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the communication interface is configured to send a third target signal to a terminal, and receive a sensing measurement amount sent by the terminal; or alternatively

Receiving at least one of a reference signal, a sensing signal and a data signal sent by a terminal;

Optionally, the communication interface is further configured to send a perceived flow exit instruction to the first network side device;

Preferably, the embodiment of the present application further provides a network side device, where the network side device is a second network side device, and the network side device includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction is executed by the processor to implement each process of the foregoing communications method embodiment, and the process can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Specifically, the embodiment of the application also provides a network side device, which is a second network side device. The structure of the second network side device may be shown in fig. 12, and will not be described herein.

Specifically, the second network side device of the embodiment of the present application further includes: instructions or programs stored in the memory and capable of running on the processor, which invokes the instructions or programs in the memory to execute the method executed by each module shown in fig. 13, achieve the same technical effects, and are not repeated here.

As shown in fig. 14, the embodiment of the present application further provides a communication apparatus 1400, applied to a core network device, including:

a determining module 1401, configured to determine whether to use a determination result of the conditional switching;

a second sending module 1402, configured to send the determination result to a first network side device;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the determining module 1401 includes:

the receiving unit is configured to receive first information sent by a first network side device, where the first information includes: at least one of a second measurement result reported by the terminal, a third measurement result of the service cell to the terminal, a fourth measurement result of the neighbor cell to the terminal, and sensing capabilities of the first network side device and a plurality of candidate target cells;

and the second acquisition unit is used for acquiring a judging result of whether to use the condition switching or not according to the first information.

Optionally, the perceptual capability includes at least one of:

Optionally, the apparatus further comprises:

a seventh sending module, configured to send second measurement control information to the first network side device, where the second measurement control information is used for the first network side device to measure a terminal, and obtain a third measurement result of the serving cell on the terminal;

wherein the second measurement control information includes:

Optionally, the apparatus further comprises:

an eighth sending module, configured to send a perceived flow exit instruction to the first network side device;

The embodiment of the application also provides core network equipment, which comprises a processor and a communication interface, wherein the processor is used for determining whether to use the judging result of the condition switching; the communication interface is used for sending the judging result to first network side equipment;

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

Optionally, the communication interface is configured to receive first information sent by the first network side device, where the first information includes: at least one of a second measurement result reported by the terminal, a third measurement result of the service cell to the terminal, a fourth measurement result of the neighbor cell to the terminal, and sensing capabilities of the first network side device and a plurality of candidate target cells;

The processor is used for acquiring a judging result of whether to use the condition switching or not according to the first information.

Optionally, the perceptual capability includes at least one of:

Optionally, the communication interface is further configured to:

transmitting second measurement control information to the first network side equipment, wherein the second measurement control information is used for the first network side equipment to measure the terminal and obtain a third measurement result of the serving cell to the terminal;

wherein the second measurement control information includes:

Optionally, the communication interface is further configured to:

sending a perception flow exit instruction to first network side equipment;

Preferably, the embodiment of the present application further provides a core network device, which includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction when executed by the processor implements each process of the foregoing communications method embodiment, and the process can achieve the same technical effect, and in order to avoid repetition, a description is omitted herein.

Specifically, the embodiment of the application also provides core network equipment. As shown in fig. 15, the core network device 1500 includes: a processor 1501, a network interface 1502 and a memory 1503. The network interface 1502 is, for example, a common public radio interface (common public radio interface, CPRI).

Specifically, the core network device 1500 of the embodiment of the present application further includes: instructions or programs stored in the memory 1503 and executable on the processor 1501, the processor 1501 calls the instructions or programs in the memory 1503 to execute the method executed by each module shown in fig. 14 and achieve the same technical effect, and thus, the description is omitted herein for avoiding repetition.

The processor is a processor in the core network device described in the foregoing embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

Optionally, as shown in fig. 16, the embodiment of the present application further provides a communication device 1600, including a processor 1601 and a memory 1602, where the memory 1602 stores a program or instructions that can be executed on the processor 1601, for example, when the communication device 1600 is a terminal, the program or instructions implement the steps of the above-mentioned communication method embodiment when executed by the processor 1601, and achieve the same technical effects. When the communication device 1600 is a network side device, the program or the instruction, when executed by the processor 1601, implements the steps of the above-described communication method embodiment, and the same technical effects can be achieved. When the communication device 1600 is a core network device, the program or the instruction, when executed by the processor 1601, implements the steps of the above-described communication method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no detailed description is given here.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the communication method embodiment, and can achieve the same technical effects, so that repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement each process of the above-mentioned embodiments of the communication method, and achieve the same technical effects, so that repetition is avoided and detailed description is omitted herein.

The embodiment of the application also provides a communication system, which comprises: the terminal can be used for executing the steps of the communication method, the first network side device can be used for executing the steps of the communication method, the second network side device can be used for executing the steps of the communication method, and the core network device can be used for executing the steps of the communication method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method of communication, comprising:

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

2. The method according to claim 1, further comprising, before the terminal receives the handover configuration sent by the first network side device:

the terminal receives first measurement control information sent by first network equipment;

the terminal performs measurement of a serving cell and/or a neighbor cell according to the first measurement control information, and a second measurement result is obtained;

the terminal reports the second measurement result to the first network side equipment;

wherein the first measurement control information includes:

3. The method according to claim 1, further comprising, after the terminal initiates random access to at least one candidate target cell satisfying a handover condition based on a first measurement result of at least one first target signal:

the terminal receives a third target signal sent by second network side equipment and feeds back a sensing measurement quantity to the second network side equipment or core network equipment, wherein the third target signal comprises at least one of the following components: a sense signal, a synchronization signal, and a reference signal; or alternatively

The terminal sends at least one of a reference signal, a sensing signal and a data signal to the second network side equipment;

4. The method of claim 1, wherein the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

5. The method of claim 4, wherein the perceptual capabilities comprise at least one of:

6. The method according to claim 1 or 2, wherein the communication indicator comprises at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

7. The method according to claim 1 or 2, wherein the perceptual performance assessment indicator comprises at least one of:

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

8. A method according to claim 1, 2 or 3, wherein the perceptual measurement comprises at least one of:

9. The method according to claim 1 or 2, wherein the perceived result comprises at least one of:

10. The method of claim 2, wherein the performance indicator of the target parameter comprises at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

Prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

wherein the target parameters include at least one of:

11. A method of communication, comprising:

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

The position of the terminal changes;

12. The method according to claim 11, wherein the first network side device sends a handover configuration to a terminal, comprising:

13. The method of claim 12, wherein the first network side device obtains a result of determining whether to use conditional switching, including:

14. The method according to claim 13, wherein before the first network side device receives the determination result of whether to use the conditional handover sent by the core network device, the method further comprises:

and sending the first information to the core network equipment.

15. The method of claim 13, wherein the serving cell obtains the third measurement result of the terminal in a manner that includes:

wherein the second measurement control information includes:

16. The method according to claim 12, further comprising, before the first network side device obtains the result of the determination of whether to use the conditional handover:

the first network side equipment receives a second measurement result sent by the terminal;

wherein the first measurement control information includes:

17. The method as recited in claim 11, further comprising:

18. The method of claim 11, wherein the configuration parameters include at least one of:

the perceived capability of the candidate target cell;

cell identification of candidate target cells;

random access channel parameters of candidate target cells;

wherein the parameter information includes at least one of:

a waveform;

subcarrier spacing;

a guard interval;

a bandwidth;

sensing a frame duration;

time domain spacing;

power information;

a signal format;

a signal direction;

beam information;

quasi co-located QCL relationship;

antenna configuration parameters;

the resource information includes at least one of:

time domain resources of the first target signal;

and frequency domain resources of the first target signal.

19. The method of claim 13 or 18, wherein the perceptibility comprises at least one of:

20. The method according to claim 11 or 16, wherein the communication indicator comprises at least one of:

reference signal received power RSRP;

reference signal received quality RSRQ;

signal-to-interference-plus-noise ratio, SINR;

the received signal strength indicates RSSI.

21. The method of claim 11, 15 or 16, wherein the perceptual performance assessment indicator comprises at least one of:

perceived signal-to-noise ratio, SNR;

sensing SINR;

echo signal power.

22. The method according to claim 11 or 16, wherein the perceptual measurement comprises at least one of:

23. The method according to claim 11 or 16, wherein the perceived result comprises at least one of:

24. The method according to claim 15 or 16, wherein the performance indicator of the target parameter comprises at least one of:

variance of residual of the target parameter;

standard deviation of residual error of target parameter;

Prediction error covariance of the target parameter;

state estimation error covariance of the target parameters;

wherein the target parameters include at least one of:

25. A method of communication, comprising:

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

26. The method as recited in claim 25, further comprising:

27. The method as recited in claim 25, further comprising:

28. A method of communication, comprising:

Wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

29. The method according to claim 28, wherein the core network device determining whether to use a result of the judgment of the conditional handover, comprises:

30. The method of claim 29, wherein the perceptual capabilities comprise at least one of:

31. The method as recited in claim 29, further comprising:

wherein the second measurement control information includes:

32. The method as recited in claim 28, further comprising:

33. A communication device applied to a terminal, comprising:

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

34. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the communication method of any one of claims 1 to 10.

35. A communication apparatus applied to a first network side device, comprising:

Wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

36. A communication apparatus applied to a second network side device, comprising:

the handover condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

37. A network side device, being a first network side device or a second network side device, characterized by comprising a processor and a memory storing a program or instructions executable on the processor, which program or instructions, when executed by the processor, implement the steps of the communication method according to any of claims 11 to 27.

38. A communication apparatus for use in a core network device, comprising:

wherein the switching condition includes at least one of:

sensing the change of the state of the target;

the position of the terminal changes;

39. A core network device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the communication method of any of claims 28 to 32.

40. A readable storage medium, characterized in that it stores thereon a program or instructions, which when executed by a processor, implement the steps of the communication method according to any of claims 1 to 32.