CN117255380A

CN117255380A - Mobile communication credibility maintenance intelligent prediction method and device and electronic equipment

Info

Publication number: CN117255380A
Application number: CN202311509836.XA
Authority: CN
Inventors: 李凤华; 郭超; 曹进; 张玲翠; 李晖; 李子孚
Original assignee: Institute of Information Engineering of CAS
Current assignee: Institute of Information Engineering of CAS
Priority date: 2023-11-14
Filing date: 2023-11-14
Publication date: 2023-12-19
Anticipated expiration: 2043-11-14
Also published as: CN117255380B

Abstract

The invention relates to the technical field of communication, and provides a method, a device and electronic equipment for intelligently predicting the credibility of mobile communication, wherein the method comprises the following steps: performing switching path prediction based on the trusted holding state information to obtain a switching path prediction information set; determining target base station sets of different propagation paths from the switching path prediction information sets, pushing the switching path prediction information sets and the credible holding state information to each target base station in the target base station sets of different propagation paths, so that each target base station executes switching preparation, and pushing the switching path prediction information sets and the credible holding state information to multi-hop base stations in the switching path prediction information sets. The method, the device and the electronic equipment provided by the invention can enable the mobile communication terminal to realize intelligent and efficient seamless and safe switching, thereby providing continuous high-quality communication service for users.

Description

Mobile communication credibility maintenance intelligent prediction method and device and electronic equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and an electronic device for trusted maintenance intelligent prediction of mobile communications.

Background

Base station handover refers to a procedure in which a terminal is handed over from a currently connected base station to another neighboring base station in a mobile communication system. Base station handover is a technical means for maintaining communication quality and continuity.

At present, base station switching can occur in mobile communication under two conditions, namely, a terminal moves, for example, the terminal is an unmanned plane, a mobile phone carried by a pedestrian or a mobile phone in an automobile, and the terminal moves relative to the base station, so that the base station switching exists; secondly, the base station is moving and the terminal is not moving, for example, the base station (e.g., airship) is moving relative to the terminal, and thus, base station handover may also occur.

When the terminal moves from the current communication base station to the next base station (including to the next CU/DU), the terminal is not timely transmitted to the next base station (including to the next CU/DU) due to the influence of factors such as base station coverage, base station density, terminal moving speed, base station failure and the like, so that the communication cannot be continuous until timeout re-determination occurs, and thus the phenomena of signal loss and communication interruption can occur, and the user experience is affected.

Disclosure of Invention

The invention provides a method, a device and electronic equipment for intelligently predicting the credibility of mobile communication, which are used for solving the defects of signal loss and communication interruption in the prior art when a base station is switched.

The invention provides a credible maintenance intelligent prediction method of mobile communication, which comprises the following steps:

under the condition that the base station is determined to be switched, switching path prediction is carried out based on trusted holding state information to obtain a switching path prediction information set, wherein the trusted holding state information is communication state information used for supporting communication switching between base stations;

determining a target base station set of different propagation paths from the switching path prediction information set, pushing the switching path prediction information set and the trusted holding state information to each target base station in the target base station set of different propagation paths so as to enable each target base station to execute switching preparation, and pushing the switching path prediction information set and the trusted holding state information to a multi-hop base station in the switching path prediction information set;

and switching to the target base station under the condition that the terminal or the target base station receives the switching request confirmation information returned by the switching request.

The invention provides a credible maintenance intelligent prediction method of mobile communication, which is applied to a source base station, wherein the method determines to switch base stations and comprises the following steps:

acquiring trusted holding state information and/or receiving a signal measurement report sent by a terminal, and determining whether to initiate base station switching based on the trusted holding state information and/or the signal measurement report;

and/or the number of the groups of groups,

and receiving a first active switching request sent by the terminal, wherein the first active switching request indicates that the terminal determines to actively initiate a base station switching request to a source base station.

The invention provides a credible maintenance intelligent prediction method of mobile communication, which is applied to a terminal, wherein the method determines to perform base station switching and comprises the following steps:

based on the trusted holding status information and/or the signal measurement report, it is determined whether to perform a base station handover.

The invention provides a credible keeping intelligent prediction method of mobile communication, which is applied to other base stations except a source base station, wherein the other base stations comprise at least one target base station, and the determining of base station switching comprises the following steps:

acquiring trusted holding state information and/or receiving a signal measurement report sent by a terminal, and determining whether to perform base station switching or not based on the trusted holding state information and/or the signal measurement report;

And/or the number of the groups of groups,

and receiving a second active switching request sent by the terminal, wherein the second active switching request represents that the terminal determines to initiate a base station switching request to the rest base stations.

According to the trusted holding intelligent prediction method of mobile communication, the trusted holding state information comprises the steps of generating an air interface session key parameter, a key negotiation algorithm identification of a terminal and pushing a multi-hop information set forwards;

or the trusted holding state information comprises generating an air interface session key parameter, a key negotiation algorithm identifier of a terminal and a forward pushing multi-hop information set, and further comprises at least one of a terminal motion state, a terminal motion rate, terminal azimuth information, a base station motion rate, base station azimuth information, terminal navigation information, route information, current connection base station information, terminal information, a historically connected base station information set, a sliding window size of a transmission data packet, a current packet sequence number, a terminal motion state configuration mode, an acquisition mode of a terminal motion state at a base station side, a time stamp, terminal traveling track information and a configuration mode of a terminal traveling track.

According to the method for intelligently predicting the trusted holding of the mobile communication, which is provided by the invention, the switching path prediction is performed based on the trusted holding state information to obtain a switching path prediction information set, and the method comprises the following steps:

Determining a base station selection range based on at least one of the terminal motion state, the terminal azimuth information and the base station azimuth information; or determining a base station selection range based on at least one of the terminal motion state, the terminal azimuth information and the base station azimuth information and at least one of the terminal navigation information, the route information, the sliding window size of the transmission data packet and the current packet sequence number;

acquiring a propagation path and a forward push hop count based on at least one of the terminal azimuth information, the terminal movement rate, the base station azimuth information, the base station movement rate, and the base station selection range; or, based on at least one of the terminal navigation information, the current connection base station information, the route information, and at least one of the terminal azimuth information, the terminal movement rate, the base station azimuth information, the base station movement rate, and the base station selection range, obtaining a propagation path and a forward push hop count;

and obtaining the switching path prediction information set based on the propagation path and the forward push hop count.

According to the credible maintenance intelligent prediction method of mobile communication provided by the invention, under the condition that the terminal is a land-sea terminal, the terminal azimuth information comprises a terminal travelling azimuth;

the method comprises the steps that a propagation path and a forward push hop number are obtained based on at least one of the terminal azimuth information, the terminal movement rate, the base station azimuth information and the base station movement rate and the base station selection range; or, based on at least one of the terminal navigation information, the current connection base station information, the route information, and at least one of the terminal azimuth information, the terminal movement rate, the base station azimuth information, the base station movement rate, and the base station selection range, obtaining a propagation path and a forward push hop count, including:

determining the propagation path based on the base station selection range and base station information within the base station selection range; or determining the propagation path based on at least one of the route information, the terminal movement rate, the terminal navigation information, and the base station selection range and the base station information within the base station selection range;

Determining a forward pushing multi-hop information set based on the terminal azimuth information and/or the terminal motion rate and the propagation path; or determining a forward pushing multi-hop information set based on at least one of the terminal navigation information, the current connection base station information and the route information, the terminal azimuth information and/or the terminal movement rate, and the propagation path;

and obtaining the forward push hop count based on the forward push multi-hop information set.

According to the credible maintenance intelligent prediction method of mobile communication provided by the invention, under the condition that the terminal is a pedestrian terminal, the terminal azimuth information comprises a terminal traveling azimuth angle and/or a terminal traveling opening angle;

Determining the propagation path based on the base station selection range and base station information within the base station selection range; or determining the propagation path based on at least one of the route information, the terminal movement rate, the terminal navigation information, the terminal azimuth information, and the base station selection range and the base station information within the base station selection range;

According to the credible maintenance intelligent prediction method for mobile communication provided by the invention, under the condition that the terminal is an air terminal, the terminal azimuth information comprises at least one of a terminal traveling azimuth angle, a terminal to ground opening angle, a terminal projection offset plumb angle, a terminal projection offset azimuth angle and a terminal ground clearance;

According to the credible maintenance intelligent prediction method for mobile communication provided by the invention, under the condition that the terminal is a ground fixed terminal and the source base station is an air mobile base station, the base station azimuth information comprises at least one of a base station antenna coverage opening angle, a base station antenna azimuth angle, a base station antenna pointing offset angle and a base station ground clearance;

determining the propagation path based on the base station selection range and base station information within the base station selection range; or determining the propagation path based on at least one of the route information, the base station movement rate, the terminal navigation information, the base station azimuth information, and the base station selection range and the base station information within the base station selection range;

Determining a forward push multi-hop information set based on the base station azimuth information and/or the base station motion rate, and the propagation path; or determining a forward pushing multi-hop information set based on at least one of the terminal navigation information, the current connection base station information, the route information, the base station azimuth information and/or the base station movement rate, and the propagation path;

According to the credible maintenance intelligent prediction method for mobile communication provided by the invention, under the condition that the terminal is a ground mobile terminal and the source base station is an air mobile base station, the terminal azimuth information comprises a terminal traveling azimuth angle, and the base station azimuth information comprises at least one of a base station antenna coverage opening angle, a base station antenna azimuth angle, a base station antenna pointing offset angle and a base station ground clearance;

Determining the propagation path based on at least one of the route information, the terminal movement rate, the base station movement rate, the terminal navigation information, the terminal azimuth information, the base station azimuth information, and the base station selection range and the base station information within the base station selection range;

determining a forward push multi-hop information set based on the propagation path and at least one of the terminal azimuth information, the terminal movement rate, the base station azimuth information, and the base station movement rate; or determining a forward push multi-hop information set based on at least one of the terminal navigation information, the current connection base station information, the route information, and at least one of the terminal azimuth information, the terminal movement rate, the base station azimuth information, the base station movement rate, and the propagation path;

According to the method for intelligently predicting the trusted holding of the mobile communication, the method for acquiring the trusted holding state information comprises the following steps:

sending trusted holding state configuration information to the terminal to request the terminal to generate trusted holding state information based on the trusted holding state configuration information, and receiving at least part of the trusted holding state information returned by the terminal;

And/or the number of the groups of groups,

and receiving at least part of the trusted holding state information actively pushed by the terminal.

According to the method for intelligently predicting the trusted holding of the mobile communication, the trusted holding state configuration information is used for generating the trusted holding state information, and the setting mode of the trusted holding state configuration information comprises any one of setting through a display interface of the terminal and/or the source base station, setting through a remote device, setting through an application program and setting through sensing equipment carried on the terminal and/or the base station.

According to the credible maintenance intelligent prediction method of mobile communication provided by the invention, under the condition that the terminal is a land-sea terminal, the source base station comprises a same side base station and/or a opposite side base station, wherein the same side base station is a base station which is at the same side with the movement direction of the land-sea terminal and is being connected with the land-sea terminal, and the opposite side base station is a base station which is at the opposite side of the movement direction of the land-sea terminal and is in the coverage area of a cell where the land-sea terminal is located;

and under the condition that the same-side base station has a preset condition, the opposite side base station is taken as the source base station, wherein the preset condition comprises at least one of incapability of using the same-side base station, weakening of signal intensity of the same-side base station, exceeding of a preset threshold value by the number of connecting terminals of the same-side base station, low service quality of the same-side base station and forced offline of the same-side base station.

According to the trusted keeping intelligent prediction method for mobile communication provided by the invention, the switching path prediction information set comprises a forward push multi-hop information set, wherein the forward push multi-hop information set comprises a propagation path and a forward push hop count, or the forward push multi-hop information set comprises at least one of a base station identifier, a terminal motion state, route information and base station coverage information, and the propagation path and the forward push hop count.

According to the method for intelligently predicting the credibility maintenance of the mobile communication, the switching request comprises at least one of a session key and/or a new session key of a source base station, a cell wireless network temporary identifier of the terminal and wireless link configuration information, and identity information of the target base station.

The invention also provides a device for intelligently predicting the credibility of mobile communication, which comprises:

the prediction unit is used for predicting a switching path based on the trusted holding state information to obtain a switching path prediction information set under the condition that the base station is determined to be switched, wherein the trusted holding state information is communication state information used for supporting communication switching between the base stations;

A pushing unit, configured to determine a target base station set of different propagation paths from the handover path prediction information set, and push the handover path prediction information set and the trusted holding state information to each target base station in the target base station set of different propagation paths, so that each target base station performs handover preparation, and push the handover path prediction information set and the trusted holding state information to a multi-hop base station in the handover path prediction information set;

and the switching unit is used for switching to the target base station under the condition that the terminal or the target base station receives the switching request confirmation information returned by the switching request.

The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method for trusted keeping intelligent prediction of mobile communication according to any one of the above when executing the program.

The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a trusted remain intelligent prediction method for mobile communications as described in any of the above.

The invention also provides a computer program product comprising a computer program which when executed by a processor implements a method of trusted remain intelligent prediction of mobile communications as described in any of the above.

The method, the device and the electronic equipment for the credible maintenance intelligent prediction of the mobile communication provided by the invention have the advantages that the switching path prediction information set is obtained by carrying out the switching path prediction based on the credible maintenance state information, and the credible maintenance state information and the switching path prediction information set are pushed to each target base station of different propagation paths in the switching path prediction information set and the subsequent multi-hop base station in advance, so that the mobile communication terminal can realize intelligent and efficient seamless safe switching, and continuous high-quality communication service is provided for users.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a trusted remain intelligent prediction method for mobile communication provided by the invention;

FIG. 2 is one of the exemplary scenarios of the trusted remain intelligent prediction for mobile communications provided by the present invention;

FIG. 3 is a flow chart of the method for intelligent prediction of mobile communication in land-sea terminal scenario;

FIG. 4 is a second exemplary scenario diagram of a trusted remain intelligent prediction of mobile communications provided by the present invention;

FIG. 5 is a third exemplary scenario diagram of a trusted remain intelligent prediction of mobile communications provided by the present invention;

FIG. 6 is a schematic diagram of a scenario in which the mobile communication is trusted to maintain intelligent prediction provided by the present invention;

FIG. 7 is a flow chart of a method for intelligently predicting the credibility of mobile communication in a pedestrian terminal scene;

FIG. 8 is a diagram of a scenario featuring a trusted maintenance intelligent prediction of mobile communications provided by the present invention;

fig. 9 is a flow chart of a method for trusted keeping intelligent prediction of mobile communication in an air terminal scenario provided by the invention;

FIG. 10 is a diagram of a mobile communication scenario featuring a trusted remain intelligent prediction provided by the present invention;

FIG. 11 is a flow chart of a method for trusted keeping intelligent prediction of mobile communication in a ground fixed terminal and air mobile base station scenario provided by the invention;

FIG. 12 is a diagram of a mobile communication scenario featuring a trusted remain intelligent prediction provided by the present invention;

fig. 13 is a flow chart of a method for intelligently predicting the credibility of mobile communication in the scenes of a ground mobile terminal and an air mobile base station;

FIG. 14 is a schematic diagram of a trusted-keeping intelligent prediction apparatus for mobile communications according to the present invention;

fig. 15 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Currently, in two situations, base station switching occurs in mobile communication, one is that a terminal is moving, for example, the terminal is an unmanned plane, a mobile phone carried by a pedestrian or a mobile phone in an automobile, and the terminal is moving relative to the base station, and when the terminal moves from one cell (refer to a base station or a coverage area of the base station) to another cell, in order to ensure that communication is not interrupted, the base station switching needs to be performed. When a terminal moves from a current communication base station to a next base station (including to the next CU/DU), due to the influence of factors such as base station coverage, base station density, terminal moving speed, base station failure and the like, the trusted holding state information may not be transmitted to the next base station or the next multi-hop base station (including to the next CU/DU) in time, so that the call cannot be continued until timeout re-determination occurs, and phenomena of signal loss and communication interruption will occur. Secondly, the base station is moving, the terminal is not moving, for example, the base station (such as a airship) is moving relative to the terminal, so that the base station switching can also occur, and the problems of signal loss and communication interruption are also caused.

In addition, the motion state of the terminal is changed during the moving process, and the terminal moves at a high speed in the scenes of automobiles, airplanes, unmanned aerial vehicles and the like, and in the scenes, the terminal cannot be connected with one base station, and can be connected with a plurality of base stations. The connection between the terminal and the base station is an irregular star topology structure, so that the path for connecting the terminal with the base station in the motion process is not unique, and a plurality of different moving paths can occur; meanwhile, in the same moving path, the density and the interval distance of the base stations are not fixed, if the credible maintenance state information cannot be timely transmitted to the next-hop base station or the next-hop base station, connection failure is caused, and the phenomena of packet loss, signal loss, communication interruption and the like occur, so that the user experience is affected.

In this regard, the embodiment of the invention provides a method for maintaining the reliability and intelligent prediction of mobile communication, which enables a mobile communication terminal to realize intelligent and efficient seamless and safe switching, and a source base station to realize accurate and efficient prediction of a switching path, thereby overcoming the defects.

The mobile communication credibility maintenance intelligent prediction method provided by the embodiment of the invention is applicable to multiple scenes, and can be divided into five scenes according to the types of terminals, the types of base stations and the position relationship between the terminals and the base stations: the land-sea terminal comprises a static state and a moving state, wherein the land-sea terminal can comprise equipment bound on land-sea movable objects such as automobiles, ships or submarines, and also can comprise a terminal carried by people when riding on the land-sea movable objects such as automobiles, ships, submarines and the like; secondly, the pedestrian terminal, namely the terminal is carried or worn by the pedestrian to keep synchronous motion with the pedestrian; the aerial terminal, namely the terminal is bound on an aerial movable object such as an airplane, an unmanned aerial vehicle, an airship and the like, comprises static and moving states, and can comprise equipment bound on the aerial movable object such as the airplane, the unmanned aerial vehicle, the airship and the like, and also can comprise a terminal carried by a person when taking the aerial movable object such as the airplane, the airship, the fire balloon and the like; fourthly, a ground fixed terminal and an aerial mobile base station, namely, the terminal is fixed on the ground, and an aerial vehicle carries the base station; and fifthly, the ground mobile terminal and the air mobile base station, namely the terminal can move on the ground, and the air vehicle carries the base station. It can be appreciated that in the first three scenarios, the source base station is a fixed base station.

Fig. 1 is a flow chart of a trusted-keeping intelligent prediction method for mobile communication, provided by the invention, as shown in fig. 1, the method comprises:

step 110, under the condition that the base station is determined to be switched, switching path prediction is carried out based on the credible holding state information, so as to obtain a switching path prediction information set, wherein the credible holding state information is communication state information used for supporting the switching of communication between the base stations;

it should be noted that, the source base station, the terminal and the target base station may all initiate a base station handover, and the source base station may actively initiate a handover request to the target base station; the terminal can also actively initiate a switching request to the source base station or the target base station, and the source base station or the target base station can determine whether to switch the base station after receiving the switching request actively initiated by the terminal; the target base station can independently complete the base station switching under the condition of receiving the switching request of the terminal, does not need to rely on the participation of the source base station, and can actively initiate the switching request to the terminal so as to realize the base station switching. Therefore, the execution body of the method provided by the embodiment of the present invention may be a source base station, a terminal, or a target base station, which is not particularly limited in the embodiment of the present invention.

The source base station refers to a base station currently communicating with the terminal, and the target base station refers to a base station which provides communication service for the terminal next time when the service cannot be continuously provided due to the problems of coverage, service quality and the like of wireless signals of the source base station. The base stations herein may include fixed base stations and mobile base stations. The terminal refers to a device including a mobile communication module (including 2G, 3G, 4G, 5G and future 6G, 802.11, internet of things, bluetooth, etc.), such as a mobile phone, a computer, a tablet personal computer (PAD), a smart watch, etc.

Specifically, in the case where it is determined to perform base station handover, handover path prediction may be performed based on the trusted holding state information. The trusted holding state information includes information capable of indicating the current movement speed, the track change trend, the current position and the advancing direction of the terminal, information of the last 1-N hop base station passed by the terminal, time information generated by different information and the like, and based on the information, the source base station can predict and obtain a switching path prediction information set.

The handover path prediction information set includes a forward push multi-hop information set including a propagation path and a forward push hop count, or includes at least one of a base station identification, a terminal motion state, route information, base station coverage information, and a propagation path and a forward push hop count. Here, the base station identifier refers to a base station ID, and the terminal identifier refers to a terminal ID.

It may be understood that pushing forward multi-hop refers to that the source base station pushes the trusted holding state information and the handover path prediction information set forward or in a certain direction (360 degrees may be all) to the next-hop or multi-hop base station, for example, when looking forward from the terminal 360 degrees direction, the included angle a is taken as a view angle, and all base stations within the included angle a are included. The forward push multi-hop may also be how many hop base stations are on different propagation paths, e.g. if it is a pedestrian terminal, it may be seen from the one closest to the pedestrian how many hop base stations are on different propagation paths.

The propagation paths may include network topology paths, terminal travel paths, etc., the propagation paths are a set of, for example, L (L.gtoreq.1) propagation paths, the first propagation path having a forward push hop count of N ₁ … …, forward push hop count N on the L-th propagation path _L Wherein N is ₁ Is the least number of forward push hops in the propagation path, N _L The first propagation path may be denoted as SwitchPath { if the number of forward push hops is the largest in the propagation pathsThe L-th propagation path may be expressed as SwitchPath { }>｝。

The forward pushing hop count on each propagation path is affected by a plurality of factors such as a terminal movement rate, a base station density, terminal azimuth information and the like, for example, the vehicle running speed is high on a straight road, and the number of forward pushing hops of the base stations is large, so that the number of the base stations in the propagation path is large; the running speed of the automobile in the bending area is low, the number of hops for forward pushing of the base stations is small, and the number of the base stations in the propagation path is small; if the base stations are dense in the same area, the forward pushing hop count is more, and the base stations are sparse, the forward pushing hop count is less, namely, in the same area, the forward pushing hop counts of different base stations on different propagation paths can be the same or different, or some of the forward pushing hop counts can be the same or some of the forward pushing hop counts are different. For example, when the base stations are irregularly distributed in a certain range or the path information, the base station pitch, the base station density, and the like of the terminal are irregular, the number of propagation hops between the base stations is not equal. For another example, the number of forward push hops on the same propagation path may be inconsistent for different terminals depending on their speed of movement and trajectory of travel.

Step 120, determining target base station sets of different propagation paths from the switch path prediction information sets, pushing the switch path prediction information sets and the trusted holding state information to each target base station in the target base station sets of different propagation paths, so that each target base station executes switch preparation, and pushing the switch path prediction information sets and the trusted holding state information to multi-hop base stations in the switch path prediction information sets;

specifically, the set of handover path prediction information includes different propagation paths, each propagation path includes a forward pushed multi-hop base station, after the set of handover path prediction information is obtained, a target base station predicted on each propagation path may be determined therefrom, and based on the target base stations predicted on all the different propagation paths, a set of target base stations for obtaining different propagation paths may be determined, where the set of target base stations may include one or more target base stations.

After determining to obtain the target base station sets of different propagation paths, the source base station can initiate a switching request to each target base station in the target base station sets; the terminal can also send an active switching request to the source base station, and then initiate a switching request to each target base station in the target base station set through the source base station; the terminal may also send an active handoff request to other base stations than the source base station, where the other base stations respond and decide whether to perform base station handoff. Here, the handover request may include at least one of a session key and/or a new session key of the source base station, a cell radio network temporary identification of the terminal, and radio link configuration information, and identity information of the target base station. It should be understood that the handover request must include identity information of the target base station to ensure that the terminal can be successfully handed over to the correct base station in the handover process, and in addition, the handover request may further include at least one of a session key of the source base station, a new session key, a cell radio network temporary identifier of the terminal, and radio link configuration information, which helps to ensure that the handover process of the base station is successfully completed and stable communication connection is continued.

And when the switching request is initiated, a pushing process can be initiated to each target base station in the target base station set, and the switching path prediction information set and the trusted holding state information are pushed. It should be understood that the trusted holding state information sent to each target base station may be trusted holding state information that the terminal pushes to the source base station or other base stations, or may be trusted holding state information after the source base station or other base stations perform addition, modification, deletion, update, or other processing according to the received trusted holding state information from the terminal.

And each target base station decides whether the terminal is admitted or not according to the received switching request, reserves the resources required by the wireless resources for providing services for the terminal, generates terminal application switching configuration and prepares to execute switching. Here, applying the handover configuration may include generating a new session key with the terminal.

The session key is identified by a terminal key negotiation algorithm identifier in the trusted holding state information, and a specific algorithm of the target base station and the terminal key negotiation is determined by the target base station key negotiation algorithm identifier. The session key parameter may include a Next hop parameter value NH (Next hop), a source base station key, a terminal ID, and a source base station ID, and the terminal key negotiation algorithm and the target base station key negotiation algorithm may be the same or different, including but not limited to KDF, hash, SM and DH, so as to ensure that the same session key can be negotiated, the target base station needs to find the same key negotiation algorithm according to the received terminal key negotiation algorithm identifier, and if there are multiple same key negotiation algorithms, the target base station and the terminal may select one algorithm to implement key negotiation. If the terminal key negotiation algorithm and the target base station key negotiation algorithm do not have the same key negotiation algorithm, the session key negotiation fails, and the terminal access authentication process is re-executed according to the existing mechanism.

After each target base station receives the switching path prediction information set and the credible holding state information, the credible holding state information and the switching path prediction information set can be pushed to the 1-N hop base stations according to the forward pushed multi-hop information set and the push elimination algorithm. In the embodiment of the invention, the range and the number of the nodes for the mobile pushing of the trusted holding state information are determined according to the motion state of the terminal/base station and the space-time track, so that the directionality and the effectiveness of the mobile pushing of the trusted holding state information are improved.

It may be understood that the set of trusted holding state information and the set of handover path prediction information that each target base station pushes down to 1 to n hops of base stations may be a set of trusted holding state information and a set of handover path prediction information that are pushed by the source base station, or may be a set of trusted holding state information and a set of handover path prediction information that are added, modified, deleted, updated, etc. by the target base station according to the received trusted holding state information and the set of handover path prediction information. For example, the terminal is at time stamp t ₁ When the state information corpus is held reliablyActively pushing the gNBID to the source base station at the current moment _s The source base station predicts and obtains the propagation path SwitchPath { }' by using the propagation path prediction function >Using the forward push hop count function to get the forward push multi-hop information set Multihop { }>Source base station gNBID _s Maintaining trusted status information corpus +.>And switching path prediction information set to base station +_in forward push multi-hop information set in turn>. Elapsed time->After that, the terminal and t ₁ gNBID in propagation path of time prediction ₅ Communication, the target base station is gNBID ₆ At the same time gNBID _s And gNBID ₆ Also push forward the multi-hop information set Multihop {>Elements in } when the source base station gNBID ₅ The current connection base station information is also included in the trusted holding status information and pushed to the target base station gNBID ₆ Target base station gNBID ₆ It is possible to receive t successively ₁ Time and->Trusted holding state information corpus pushed by time terminal +.>And->. Due to->≠/>Target base station gNBID ₆ Can use newly received +.>Before replacement +.>Also by comparison->And->The change trend of specific information parameters in the database generates a new trusted holding state information complete set +.>And pushed forward according to step 120.

The push elimination algorithm refers to a method for selectively retaining information when the target base station receives the switch path prediction information set and the trusted retaining state information and pushes the trusted retaining state information and the switch path prediction information set to the 1-N-hop base station according to the forward pushed multi-hop information set. The purpose of elimination is in order to alleviate the pressure of basic station buffering, and specific propelling movement elimination algorithm does not make the constraint, can include the following three kinds of cases: (1) Because the current target base station can be used as the base station in the switching path prediction information set to receive the historical credible holding state information and the switching path prediction information set pushed by the same terminal in the historical time, the newly received information replaces the historical information, namely the historical information is eliminated; (2) The current target base station continues to push the i hops forward, wherein the previous j hops (i is larger than or equal to j) receive the historical credible holding state information and the switching path prediction information set pushed by the same terminal at the historical moment, and the j-hop base station can be pushed and eliminated by judging the freshness of the information, the processing capacity of the current target base station and other modes; (3) In the process that the terminal and the base station forward the switching path prediction information set and the credible holding state information, the information is possibly lost due to instability of a communication link and the like, and the pushed base station determines which information to hold according to the rule of elimination. Wherein the rule of elimination is determined by a push elimination algorithm, the input of the push elimination algorithm may include historical trusted holding state information, historical switch path prediction information set, historical multi-hop information set, current sliding window size, packet sequence number SN, etc., and the output may include new trusted holding state information, new switch path prediction information set, new multi-hop information set, etc.

Step 130, when receiving the handover request acknowledgement information returned by the terminal or the target base station based on the handover request, switching to the target base station.

It can be understood that the handover request may be initiated by the source base station actively towards each target base station in the target base station set, or may be initiated by the terminal sending an active handover request to the source base station, then initiated by the source base station towards each target base station in the target base station set, or may be initiated by the terminal sending an active handover request to each target base station, or may be initiated by the target base station itself actively.

In an embodiment, the handover request may be initiated by the source base station, after each target base station in the target base station set receives the handover request initiated by the source base station, the source base station generates handover request acknowledgement information and returns the handover request acknowledgement information to the source base station, and when receiving the handover request acknowledgement information returned by each target base station based on the handover request, the source base station selects one target base station from the target base stations and starts to perform handover of the physical layer L1/link layer L2 layer, and the source base station sends an RRC (Radio Resource Control) reset message to the terminal to trigger the terminal to switch to the target base station, where the RRC reset message includes at least identity information of the target base station, a new C-RNTI (Cell-radio network temporary identifier), a security algorithm identifier of the target base station, and the like.

Here, when the source base station selects one target base station from the target base stations to perform handover, the source base station may select one target base station to perform handover according to information such as DL S1 TEID (downlink control plane S1 tunnel terminal identification) in the handover request acknowledgement information, in combination with different signal strengths from the terminal to the plurality of target base stations, a handover path prediction information set, and the like.

After receiving the RRC reset message, the terminal reconfigures its L1 and L2 layers to complete handover configuration of the target base station, where the handover configuration may include generating a new session key with the target base station, synchronizing to the target base station by performing random access, and then the random access is successful, and the terminal sends an RRC reset confirm message to the target base station to complete an RRC handover procedure. The terminal and the target base station can start data security transmission by applying the new session key. It should be understood that the terminal and the target base station may also use the original session key for data security transmission.

In another embodiment, the handover request may be actively initiated by the target base station, where the target base station is other base stations except the source base station, after receiving the trusted holding state information actively pushed by the terminal or the trusted holding state information pushed by other base stations, the target base station may actively initiate a handover request to the terminal, after receiving the handover request, the terminal will generate and return handover request acknowledgement information to the target base station, where the target base station starts to perform handover preparation under the condition of receiving the handover request acknowledgement information, and meanwhile, the terminal completes handover configuration and synchronizes to the target base station, and then the access is successful, and the terminal and the target base station start to perform data security transmission by applying the original session key or the new session key.

In yet another embodiment, the handover request may be sent by the terminal to the source base station, and the source base station may initiate a base station handover to each target base station after receiving the active handover request sent by the terminal. The terminal can also send the switching request to other base stations except the source base station, the base station receiving the active switching request initiates the base station switching, the base station receiving the active switching request is the target base station, and the target base station can independently initiate the base station switching under the condition of not needing the participation of the source base station.

According to the method provided by the embodiment of the invention, the switching path prediction information set is obtained by carrying out switching path prediction based on the trusted holding state information, and the trusted holding state information and the switching path prediction information set are pushed to each target base station of different propagation paths in the switching path prediction information set and the subsequent multi-hop base station in advance, so that the mobile communication terminal can realize intelligent and efficient seamless safe switching, and continuous high-quality communication service is provided for users.

Based on any of the above embodiments, the method is applied to the source base station, and in step 110, it is determined to perform base station handover, including:

acquiring the trusted holding state information and/or receiving a signal measurement report sent by a terminal, and determining whether to initiate base station switching or not based on the trusted holding state information and/or the signal measurement report; and/or receiving a first active switching request sent by the terminal, wherein the first active switching request indicates that the terminal determines to actively initiate a base station switching request to the source base station.

Specifically, the execution body of the method provided by the embodiment of the invention may be a source base station, and the source base station may send measurement configuration information to the terminal to request the terminal to send a signal measurement report. Herein, the measurement configuration information refers to parameters and policies for configuring the mobile terminal to perform measurement in the communication system, and may include measurement objects, measurement events, measurement identifiers, measurement intervals, measurement start thresholds, speed status parameters, reporting periods of signal measurement reports, and reporting numbers.

And the terminal generates a signal measurement report according to the measurement configuration information sent by the source base station, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the source base station. Here, the signal measurement report refers to a report generated according to measurement results of the serving cell and the neighbor cell, and may include an ID of the serving cell, a PCI of the serving cell (Physical Cell Identifier, physical cell identity), a RSRP (Reference Signal Receiving Power, reference signal received power) of a measurement result of a SSB of the serving cell (Synchronization Signal Block ), an RSRQ (Reference Signal Receiving Quality, received signal quality), and SINR (Signal to Interference plus Noise Ratio, signal to noise ratio), a PCI of the neighbor cell, and RSRP and RSRQ of a measurement result of the SSB of the neighbor cell. The triggering mode of the signal measurement report reporting can be periodic triggering or event triggering.

It may be understood that the trusted holding status information is communication status information for supporting handover of communication between base stations (including CU/DU and the like), and the trusted holding status information may exist in the source base station, may exist in the terminal, may exist in part in the source base station, and may exist in part in the terminal, which is not particularly limited in the embodiment of the present invention. The terminal can actively push the trusted holding state information to the source base station while uploading the signal measurement report, and can generate corresponding trusted holding state information according to the request of the source base station and send the trusted holding state information to the source base station.

The trusted holding state information acquired by the source base station may be sent by the terminal, or may be pushed by a previous base station in a previous base station switching process, or may be automatically updated by the source base station in a current communication process, which is not particularly limited in the embodiment of the present invention.

In an embodiment, after obtaining the trusted holding status information and/or receiving a signal measurement report sent by the terminal, the source base station may determine whether to initiate a base station handover based on the signal measurement report and radio resource management (Radio Resource Management, RRM) information; or determining whether to initiate base station switching according to the trusted holding state information and the radio resource management information; whether to initiate a base station handover may also be determined based on signal measurement reports, radio resource management information, trusted holding status information, and the like. Here, the above-mentioned radio resource management information refers to related information for managing and scheduling radio resource allocation in the communication system, and the acquisition and use of the related information are all in the prior art, which is not described herein.

In another embodiment, the terminal may initiate the first active handoff request to the source base station, for example, when the running direction of the terminal is greatly changed (for example, the land-sea terminal runs on a highway and turns to the ramp exit direction), the first active handoff request may be initiated to the source base station according to the terminal movement rate, the terminal azimuth information, the route information, and the like in the trusted maintenance status information. It should be understood that when the terminal actively initiates the base station switching request, the terminal may actively initiate according to a contract condition or a matching scenario, where the contract condition may include that the contract body initiates the switching request, initiates the switching request according to signal strength, and so on, for example, when receiving a plurality of base station signals, the terminal may select a base station with the largest signal strength to perform switching; for another example, the terminal itself may set a threshold to trigger a handover.

It should be noted that, considering that the source base station determines to initiate the base station switching based on the current RRM, the signal measurement report, the trusted holding state information, and the like, in order to ensure that the terminal can smoothly perform the base station switching under an emergency, the embodiment of the present invention reserves the function of the terminal to send the active switching request (i.e., the first active switching request) while the source base station determines to initiate the base station switching, so that the terminal can actively initiate the base station switching request under an emergency. For example, when the land-sea terminal suddenly needs to return to the departure point during traveling, the terminal may send an active handoff request to the source base station at this time to request the target base station to be handed off to the return direction, because the target base station currently handed off is no longer able to provide high quality communication service.

Based on any of the above embodiments, the method is applied to a terminal, and in step 110, it is determined to perform base station handover, including:

Specifically, the execution subject of the method provided by the embodiment of the invention may be a terminal, the terminal may determine whether to perform base station switching based on the trusted holding state information and/or the signal measurement report, and under the condition that the base station switching is determined to be performed, the terminal may initiate an active switching request to a source base station or a target base station, and then initiate the base station switching through the base station that receives the active switching request. Here, the base station that receives the active handoff request may be a source base station or a target base station, and the target base station may independently initiate the base station handoff without participation of the source base station.

For example, if the communication is suddenly interrupted or the terminal suddenly changes the driving route during the communication with the source base station, the terminal itself may actively send a switching request to all nearby base stations capable of receiving signals, and the base station receiving the switching request initiates the base station switching, that is, the target base station initiates the base station switching. It should be understood that, when the terminal sends the active handover request to the other base stations except the source base station, the target base station that receives the handover request responds without relying on the participation of the source base station.

Based on any of the above embodiments, the method is applied to other base stations except the source base station, where the other base stations at least include one target base station, and in step 110, it is determined to perform base station handover, including:

acquiring the trusted holding state information and/or receiving a signal measurement report sent by a terminal, and determining whether to perform base station switching or not based on the trusted holding state information and/or the signal measurement report; and/or receiving a second active switching request sent by the terminal, wherein the second active switching request represents that the terminal determines to initiate a base station switching request to other base stations.

Specifically, the execution body of the method provided by the embodiment of the invention may be other base stations except the source base station, and these base stations may send measurement configuration information to the terminal to request the terminal to send a signal measurement report, where the base station that sends measurement configuration information to the terminal is the target base station. And the terminal generates a signal measurement report according to the received measurement configuration information, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the target base station.

It can be understood that, when the terminal uploads the signal measurement report, the terminal can actively push the trusted holding state information to the target base station, or can generate corresponding trusted holding state information according to the request of the target base station and send the trusted holding state information to the target base station. The trusted holding state information acquired by the target base station may be sent by the terminal, or may be pushed by a previous base station in a previous base station switching process, or may be automatically updated by the target base station in a current communication process, which is not particularly limited in the embodiment of the present invention.

In an embodiment, after obtaining the trusted holding status information and/or receiving a signal measurement report sent by the terminal, the target base station may determine whether to initiate base station handover based on the signal measurement report and RRM; or determining whether to initiate base station switching according to the trusted holding state information and the radio resource management information; whether to initiate a base station handover may also be determined based on signal measurement reports, radio resource management information, trusted holding status information, and the like.

In another embodiment, the terminal may initiate a second active handoff request to the remaining base stations, for example, when the terminal is greatly changed in the running direction (for example, the land-sea terminal runs on a highway and turns to the ramp exit direction), the terminal may initiate a second active handoff request to the remaining base stations according to the terminal movement rate, the terminal azimuth information, the route information, and the like in the trusted maintenance status information, and any one of the remaining base stations may initiate a base station handoff after receiving the second active handoff request, where the any one of the remaining base stations is the target base station. It should be understood that, after receiving the second active handoff request, the target base station may independently perform the base station handoff without relying on participation of the source base station.

Based on the above embodiment, the trusted holding state information includes generating an air interface session key parameter, a key negotiation algorithm identifier of the terminal, and a forward pushing multi-hop information set;

or the trusted holding state information comprises generating an air interface session key parameter, a key negotiation algorithm identifier of the terminal and a forward pushing multi-hop information set, and further comprises at least one of a terminal motion state, a terminal motion rate, terminal azimuth information, a base station motion rate, base station azimuth information, terminal navigation information, route information, current connection base station information, terminal information, a historically connected base station information set, a sliding window size of a transmission data packet, a current packet sequence number, a terminal motion state configuration mode, a base station side terminal motion state acquisition mode, a time stamp, terminal traveling track information and a terminal traveling track configuration mode.

Specifically, the generation of the air interface session key parameter includes a Next Hop parameter value NH (Next Hop), a source base station key, a terminal ID, and a source base station ID. The terminal motion state refers to a moving state of the terminal, and for example, the terminal motion state may include operation on the ground (e.g., a land-sea terminal, a pedestrian terminal, etc.), operation in the air (e.g., an air terminal), etc. The terminal azimuth information may include a terminal travel azimuth, a terminal travel opening angle, and the like; the base station azimuth information may include a base station antenna coverage angle, an azimuth angle of the base station antenna, a base station antenna pointing offset angle, and the like.

The terminal navigation information may include GPS information, beidou information, navigation information, and the like. The route information refers to specific road name and direction information where the terminal is located. The current connection base station information may include a base station name, a processing capability description, a device attribute description, a supporting communication protocol, a base station version number, a base station ID, and the like.

The terminal information may include a terminal name, a processing capability description, a CPU, an operating system and version number, a device attribute description, a supporting communication protocol, a terminal version number, a terminal ID (temporary ID/fixed ID), etc., where the terminal ID may be IMSI (International Mobile Subscriber Identity ), SUPI (Subscription Permanent Identifier, subscription permanent identifier), sui (Subscription Concealed Identifier, subscription hidden identifier), TMSI (Temporary Mobile Subscriber Identity ), GUTI (Globally Unique Temporary Identifier, globally unique temporary identifier), etc.

The base station information set of the historical connection refers to the base station information set of the previous N (N is more than or equal to 1) hop connection, namely the base station information of the past connection of the terminal, and can comprise the base station name, the processing capability description, the equipment attribute description, the supporting communication protocol, the base station operating system version number, the base station ID and the like of the historical connection base station. The source base station may obtain the trusted holding state information by the method of the above embodiment, or may request the trusted holding state information from the upward N-hop base station. For example, when the terminal cannot actively push the trusted holding state information, the source base station may request the trusted holding state information from the previous hop base station that was pushed before.

The transport packets may include UDP/TCP packets or the like. The terminal motion state configuration mode can comprise automatic acquisition, self-learning, manual input, remote configuration and the like. The acquisition mode of the motion state of the terminal at the base station side can comprise terminal active pushing, base station active acquisition, self-learning, manual input, remote configuration and the like. The configuration mode of the terminal travel track can comprise self-learning, manual input, remote configuration, base station cooperative judgment and the like.

It can be understood that the trusted holding state information includes information capable of indicating the current movement speed, the track change trend, the current position and the advancing direction of the terminal, the information of the last 1-n hop base station passed by the terminal, time information generated by different information and the like, and these accurate information can provide reliable basis for the source base station to predict the switching path, so that the source base station can intelligently, accurately and efficiently predict the switching path of the base station.

Based on any of the above embodiments, in step 110, obtaining trusted holding status information includes:

transmitting the trusted holding state configuration information to the terminal to request the terminal to generate the trusted holding state information based on the trusted holding state configuration information, and receiving at least part of the trusted holding state information returned by the terminal;

And/or the number of the groups of groups,

Specifically, in an embodiment, the terminal may carry all the trusted holding state information, and may actively push all the trusted holding state information to the source base station or the other base stations, or may generate corresponding trusted holding state information according to the trusted holding state configuration information sent by the source base station or the other base stations, and send the trusted holding state information to the source base station or the other base stations.

In another embodiment, the source base station or the other base stations can carry part of the trusted holding state information, the terminal can carry part of the trusted holding state information and cooperatively cooperate with the source base station or the other base stations to realize pushing, the terminal can actively push the trusted holding state information to the source base station or the other base stations, and the terminal can generate corresponding trusted holding state information according to the trusted holding state configuration information sent by the source base station or the other base stations and send the trusted holding state information to the source base station or the other base stations.

In yet another embodiment, all the trusted holding state information may be present in the source base station, which itself may push the trusted holding state information.

It will be appreciated that the trusted holding status information obtained by different base stations may or may not be the same. For example, the source base station may request the trusted holding state information from the terminal according to the trusted holding state configuration information, assuming that the total set of trusted holding state information is Φ, and the trusted holding state information requested to be obtained by the source base station is set as Wherein->The method comprises the steps of carrying out a first treatment on the surface of the The terminal can also push the complete set phi of trusted holding state information directly to the source base station, i.e.>。

The source base station, the terminal and the rest base stations can bear different pushing tasks according to the processing capacity, and after the software of the source base station, the rest base stations or the terminal is upgraded, new and old version software can bear pushing tasks of different degrees, so that on one hand, reasonable and efficient utilization of communication equipment resources can be realized, and on the other hand, the compatibility of different software versions and updating iteration effects of the system can be improved.

In the embodiment of the invention, the terminal can reduce the overtime judgment times of switching or connection loss by carrying the trusted holding state information, when the terminal communicates with the source base station or other base stations, the terminal can push the trusted holding state information to the source base station or other base stations, or the source base station or other base stations can request the trusted holding state information to the terminal, so that the terminal and the source base station or other base stations can cooperatively, intelligently, accurately and efficiently predict the switching paths of the base stations, and the connection failure probability caused by untimely pushing of the trusted holding state information can be effectively reduced, thereby shortening the signaling transmission delay and improving the communication service quality of users.

Based on any of the above embodiments, the trusted holding state configuration information is used for generating the trusted holding state information, and the setting manner of the trusted holding state configuration information includes any one of setting through a display interface of the terminal and/or the source base station, setting through a remote device, setting through an application program, and setting through a sensing device mounted on the terminal and/or the base station.

Specifically, the trusted holding state configuration information is mainly used for configuring the trusted holding state information for switching between base stations (CU/DU and the like), the trusted holding state configuration information and required trusted holding state information fields can be set by a source base station or other base stations within the coverage range of the terminal, and the terminal can also set by itself. For example, the source base station may set a required trusted holding state information field in the trusted holding state configuration information, and then send the trusted holding state information field to the terminal, so as to request the terminal to generate and send the trusted holding state information according to the requirement of the trusted holding state configuration information.

The trusted holding state configuration information may include: the position parameters of the terminal, the attribute parameters, the security policy and the like, wherein the position parameters of the terminal can comprise one or more combinations of GPS/Beidou information, navigation information and traveling azimuth; the attribute parameters of the terminal may include one or more combinations of terminal motion state, terminal motion rate, terminal identity information, processing power; the security policy of the terminal may include one or more combinations of whether the handover procedure supports updating session keys, key agreement algorithm identification, whether air interface data is encrypted and integrity protected.

The parameters included in the trusted holding state information and the generation and configuration of the trusted holding state information are determined by the setting mode of the trusted holding state configuration information, and the specific setting mode may include: (1) Setting through a display interface of a terminal and/or a source base station; (2) By remote device setting, for example, a dedicated device (similar to a remote control of an air conditioner/television) may be connected by wire or wirelessly, with which the remote setting is made; (3) By application setting, for example, setting can be performed by connecting an application (such as an APP in a terminal or source base station system) in a wired or wireless manner; (4) And the sensing equipment such as sensors and the like mounted on the terminal and/or the source base station is used for automatically acquiring and setting. In the setting manner, the wired manner may include a dedicated cable/USB/Mini-USB/Micro-USB/USB Type-C manner, and the wireless manner may include a WIFI/bluetooth/open hotspot/IEEE 802.11 series standard manner.

It can be understood that the above setting manner can set all trusted holding state information, such as how many hop base stations are pushed forward, the movement rate of the terminal, the movement state of the terminal (such as driving/walking/flying on a road), etc., and all the information to be configured can be set in the above setting manner. The trusted holding state information may be set in the source base station, or may be set in the terminal, and both the terminal and the source base station may be set in the above setting manner.

The user can realize the input of the trusted holding state information configuration parameters through the interaction with the current main body, and the input modes of the trusted holding state information configuration parameters include but are not limited to: the user may enter configuration parameters for the trusted holding status information by one or more of buttons, circling, hooking, labeling, keys, pulleys, menus, voice, video, eye-catching, gestures, text, bioelectric signals, virtual environment, etc. Here, the user input may be reflected as physical switch-based input, such as up-down toggling of a mute key like a cell phone, left-right toggling of a voice recorder, or off-physical switch input, such as screen gestures (left-to-right, right-to-left, up-to-down, down-to-up, etc.), pop-up interface fill-out (e.g., form entry), file (e.g., XML format) importation, voice entry, etc. For example, the user may obtain the trusted holding status information configuration parameters through a cell phone terminal, a PC client, an information collector system, or the like. Further, the trusted holding state information configuration parameters can be obtained through configuration file input, voice input, popup/menu selection, moving the switch button/level button to a corresponding position on the mobile phone through a touch screen sliding up and down and left and right through gestures, displaying virtual keyboard input, hardware switch and other user input modes on the screen.

In addition, the time and mode for updating the trusted holding state information can be triggered by the terminal according to the set change condition, for example, the updating can be triggered when a new base station of one hop passes, and the updating of the time information can be triggered by the updating of different state information; periodic updating is also possible, for example, the information of the current position and the advancing direction may be set to be updated 1 time every several minutes or the update frequency may be modified as needed.

In the embodiment of the invention, the terminal participates in the transmission of the credible holding state information in a plurality of modes such as automatically establishing a communication link, thereby avoiding the hysteresis of the credible holding transmitted by a single manual configuration mode and improving the intelligence and the high efficiency of the credible holding of the communication.

Based on any of the foregoing embodiments, in step 110, a switching path prediction is performed based on the trusted holding status information to obtain a switching path prediction information set, which specifically includes:

step 111, determining a base station selection range based on at least one of a terminal motion state, terminal azimuth information and base station azimuth information; or determining a base station selection range based on at least one of a terminal motion state, terminal azimuth information and base station azimuth information and at least one of terminal navigation information, route information, a sliding window size of a transmission data packet and a current packet sequence number;

In particular, the terminal motion state may include an automobile, a ship, a submarine, etc., and in the case of an automobile (i.e., a land-sea terminal), for example, the current set of base stations around the terminal may be determined according to the terminal motion stateFuture set of possible access base stations +.>Will get->And->The propagation path prediction function is inputted to obtain the selection range of the base station in the propagation path. It should be understood that the propagation path prediction function refers to a function for predicting that a mobile terminal is in the middle ofThe mathematical model or algorithm for switching the paths of the base stations in the network can be implemented by adopting methods such as machine learning, artificial intelligence, statistical model and the like, and the embodiment of the invention is not particularly limited to the above.

For example, in a land-sea terminal scenario, since a land-sea terminal is generally traveling on a road or a course, in the case of terminal azimuth information determination, selection can be made among base stations in the vicinity of the road or course, whereby a base station selection range in a propagation path can be determined.

The terminal navigation information may include GPS information, beidou information, navigation information, and the like of the terminal, and based on the terminal navigation information and combined with a specific road section where the terminal navigation information is located, surrounding base station information of the terminal may be obtained, where the surrounding base station information of the terminal may include the number of surrounding base stations, base station IDs, distances between base stations, connection relations between base stations, and the like. For example, the terminal navigation information is that the automobile starts from a certain loop and reaches the south of the loop along the main loop, the distance is 25 km, the navigation predicts that the north of the loop has light congestion for 7 minutes, the total duration is 30 minutes, the average speed per hour of the light congestion road section is 40 km/h, the average speed per hour of other road sections is 60 km/h, and the currently connected source base station is gNBID _s Inputting terminal navigation information into the propagation path prediction function to obtain b number of base stations along the way, wherein the current road side base station set is {The inter-base station distance is { d (+)>), d(), ……, d(/>) The connection relation between the base stations is { c }, which is that), c(/>), ……, c(/>) Base station specific information.

Illustratively, by inputting route information (such as a specific road name and direction) of the land-sea terminal to the propagation path prediction function, a base station selection range in which the source base station is expected to be able to provide a handover service in a specific time in the future can be obtained. For example, the automobile travels at a speed of 60 km/h in an on-road direction in a certain loop, the currently connected source base station is gNBIDs, and the base station selection range expected to provide the handover service in the next 10 minutes is all the roadside base stations within 6 km from the source base station in the traveling direction of the automobile.

The size of the sliding window of the transmission data packet can determine the hop count N of the base station for pushing the trusted holding status information, that is, all the N base stations pushed can receive the trusted holding status information. When the base station which receives the credible holding state information continues to push the N' hop credible holding state information forwards, if the current credible holding state information is received at the last moment of the pushed base station, the base station can choose not to push because of the limitation of the size of the sliding window; and if the pushed base station does not receive the current trusted holding state information at the last moment, pushing. Or selecting a subset from the full set of trusted holding status information that is within the sliding window size range of the transmission data packet for one-time transmission. The whole switching process involves the limitation of the size of a sliding window for transmitting data packets on the transmission of data volume such as credible holding state information.

The current packet sequence number can represent different contents of the trusted holding state information, by defining the importance level of the current packet sequence number SN, when the processing capacity of the base station is limited, the base station can actively discard the data packet with low importance level according to the current packet sequence number SN, and preferentially ensure the data packet with high importance level, so as to ensure that the important trusted holding state information can be pushed forward by the current base station for multiple hops. In addition, the current packet sequence number SN can distinguish the importance level of the data packet, and the base station with limited processing capacity does not receive the data packet with low level, so that the selection range of the base station corresponding to the data packet with low level is reduced, and the base station with stronger processing capacity can be selected for switching.

Step 112, obtaining a propagation path and a forward push hop count based on at least one of terminal azimuth information, terminal motion rate, base station azimuth information, base station motion rate, and a base station selection range; or, based on at least one of terminal navigation information, current connection base station information and route information, at least one of terminal azimuth information, terminal movement rate, base station azimuth information and base station movement rate, and a base station selection range, acquiring a propagation path and a forward push hop count;

Step 113, obtaining a switching path prediction information set based on the propagation path and the forward push hop count.

Specifically, after determining the base station selection range in step 111, the propagation path may be determined based on the base station selection range, and then the forward multi-hop information set may be determined based on the propagation path, so as to obtain the forward hop count based on the forward multi-hop information set, and further the handover path prediction information set may be obtained based on the determined propagation path and the forward hop count.

In an embodiment, the propagation path and the forward push hop count may be obtained based on at least one of terminal location information, terminal movement rate, base station location information, base station movement rate, and base station selection range. For example, the propagation path and the number of forward push hops may be obtained based on the terminal azimuth information, the terminal motion rate, and the base station selection range.

In another embodiment, the propagation path and the forward push hop count may also be obtained based on at least one of terminal navigation information, current connection base station information, route information, and at least one of terminal azimuth information, terminal movement rate, base station azimuth information, base station movement rate, and base station selection range. For example, the propagation path and the number of forward push hops may be obtained based on terminal navigation information, terminal azimuth information, and a base station selection range.

It can be understood that the method provided by the embodiment of the present invention is applicable to multiple scenes, such as application scenes of land-sea terminals, pedestrian terminals, etc., where the reliable holding state information according to which the propagation path and the forward push hop count are determined in different scenes is different, and the specific determining process is described in the following embodiments, which are not repeated herein.

Based on any one of the above embodiments, in the case that the terminal is a land-sea terminal, the embodiment of the present invention provides a method for intelligently predicting the reliability maintenance of mobile communications, taking a scenario in which the land-sea terminal is located in an automobile as an example, the method can be divided into two cases according to the location distribution of the base station: one is that the base stations are distributed on two sides of the two-way traffic road, and the other is that the base stations are positioned in the middle of the two-way traffic road. The principle is the same when the land-sea terminal is in an automobile running on a unidirectional traffic road, which belongs to the special case in the two cases.

Fig. 2 is a schematic diagram of a scenario of mobile communication trusted keeping intelligent prediction according to an embodiment of the present invention, where, as shown in fig. 2, in a bidirectional traffic road between an a endpoint and a B endpoint, a land-sea terminal advancing direction may be a direction from a to B or a direction from B to a. When the land-sea terminal runs from B to A, the base station above ) The former left push trusted holding state information is mainly, the base station (++>) The trusted holding state information is pushed to the left in the past as an auxiliary; when the land-sea terminal is traveling from A to B, the following base station (/)>) The right push trusted holding state information is mainly the former, the upper base station (++>) The right push trusted holding state information is used as an auxiliary. Here, mainly means pushing regardless of the signal strength; assisting means that pushing is triggered by a certain condition, e.g. pushing if the signal strength exceeds the co-base station strength.

It can be understood that when installing the base station, the base station in which direction is mainly configured to push can be preset, and in the base station shown in fig. 2, the base station in the same direction can be mainly configured to push, and the base station in the opposite direction can be mainly configured to push. Preferably, the pushing direction of the base station can be directly configured when the base station is installed, or can be obtained through training. Here, the base station may obtain a historical data set of the push direction during operation, and training may be performed according to different methods according to the historical data set to obtain a setting of the push direction, for example, training may be performed mainly in push directions exceeding 50% and secondarily in push directions lower than 50%.

The pushing direction of the base station is of three types, namely the same direction is mainly, and the opposite direction is auxiliary; secondly, two-way peer-to-peer; thirdly, the judgment is impossible. The first and second types are typically present in an automotive scene. The third type may exist in other scenarios, for example, a plurality of base stations are installed in the field, and the air terminal flies in any direction in the air, at which time, the base station cannot set the main direction of pushing in advance. Thus, the moving terminal informs the base station of its moving state, whether it is operating on the ground or in the air, when pushing.

When the base stations are distributed on two sides of a bidirectional traffic road, the land-sea terminal judges the running direction of the base stations, and informs the base stations on two sides of the road of direction information, and the base stations on the same side of the road where the land-sea terminal runs are mainly used for pushing the credible maintenance state information to the base stations on the same side of the road where the land-sea terminal runs, and pushing the credible maintenance state information to the base stations on the opposite side of the road where the land-sea terminal runs as assistance.

The land-sea terminal speed is determined by the vehicle running speed, and a connectable road-side base station is covered by taking the land-sea terminal as a center, and is a base station capable of participating in communication and switching. Three states of time t1, t2, t3 (t 1< t2< t 3) experienced during the forward travel of the land-sea terminal are selected for description below.

Fig. 3 is a flow chart of a trusted keeping intelligent prediction method for mobile communication in a land-sea terminal scenario, which is provided by the embodiment of the invention, as shown in fig. 3, the method includes:

step 0 (measurement configuration information transmission): the source base station transmits measurement configuration information to the land-sea terminal to request the land-sea terminal to transmit a signal measurement report.

It will be understood that in the case of a land-based terminal, the source base station includes a co-lateral base station, which refers to a base station that is on the same side as the direction of movement of the land-based terminal and is being connected to the land-based terminal, and/or a contralateral base station, which refers to a base station that is on the opposite side to the direction of movement of the land-based terminal and is within the coverage area of the cell in which the land-based terminal is located. The measurement configuration information is typically sent to the land-sea terminal by the same-side base station, and in the case that the same-side base station has a preset situation, the opposite-side base station is used as a source base station, and the opposite-side base station sends the measurement configuration information to the land-sea terminal to request the land-sea terminal to send a signal measurement report. The preset conditions include at least one of incapability of using the same-side base station, weakening of signal strength of the same-side base station, overlarge number of connecting terminals of the same-side base station (namely exceeding a preset threshold), low service quality of the same-side base station and forced requirement of the same-side base station to be disconnected.

Alternatively, the source base station may transmit the trusted holding state configuration information to the land-based terminal to request the land-based terminal to transmit the trusted holding state information.

Step 1 (measurement report, trusted hold status information transmission): and the land-sea terminal generates a signal measurement report according to the measurement configuration information sent by the source base station, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the source base station. Meanwhile, the land-sea terminal can generate the trusted holding state information according to the trusted holding state configuration information sent by the source base station and send the trusted holding state information to the source base station, or the land-sea terminal can actively push the trusted holding state information to the source base station according to the configuration information of the land-sea terminal.

Specifically, after receiving measurement configuration information sent by a source base station, the land-sea terminal executes measurement of a serving cell and a neighboring cell according to the measurement configuration information, and when the land-sea terminal establishes a dedicated wireless link or signaling link with the source base station, that is, is in an rrc_connected state, the land-sea terminal reports a generated signal measurement report to the source base station.

It will be appreciated that upon receipt of measurement configuration information and/or trusted holding state configuration information from the source base station, the land-sea terminal may transmit signal measurement reports and trusted holding state information in one of the following ways: only to the same side base station, only to the opposite side base station, and simultaneously to both the same side base station and the opposite side base station.

The land-sea terminal may obtain information of the co-side base station and the opposite side base station based on the generated signal measurement report, for example, one or more combinations of use cases of the co-side base station/the opposite side base station, signal strength, the number of connection terminals, and quality of service. The land-sea terminal can determine which mode to send the signal measurement report and the credible maintenance state information according to the obtained information of the same-side base station and the opposite-side base station, and can forcedly send the signal measurement report and the credible maintenance state information to the same-side base station and/or the opposite-side base station according to the setting mode of the land-sea terminal.

Step 2 (switch path prediction): the source base station decides whether to initiate base station switching according to the signal measurement report, the radio resource management information, the credible holding state information and the like, and performs switching path prediction based on the credible holding state information to obtain a switching path prediction information set.

Here, the specific steps of the source base station for performing handover path prediction based on the trusted holding state information are as follows:

s1, determining a base station selection range based on at least one of a terminal motion state, terminal azimuth information and base station azimuth information; or determining a base station selection range based on at least one of a terminal motion state, terminal azimuth information and base station azimuth information and at least one of terminal navigation information, route information, a sliding window size of a transmission data packet and a current packet sequence number;

S2, determining a propagation path based on a base station selection range and base station information in the base station selection range; or determining a propagation path based on at least one of route information, a terminal movement rate, and terminal navigation information, and a base station selection range and base station information within the base station selection range;

specifically, in an embodiment, the base station selection range and the base station information within the base station selection range may be input to the propagation path prediction function, so that the propagation path output by the propagation path prediction function may be obtained. Here, the base station composition propagation path may be selected at random based on the base station selection range and the base station information within the base station selection range, or the propagation path may be specified, and the specific determination mode may be obtained based on the propagation path prediction function.

In another embodiment, the terminal navigation information and the base station information in the base station selection range are input to the propagation path prediction function, and 1 to l predicted propagation paths can be output, specifically including path 1 being SwitchPath {Path i is SwitchPath {Path L is SwitchPath { … }, path L is SwitchPath }｝。

It will be appreciated that in the case of a slow terminal movement rate, the physical distance between adjacent base stations in the propagation path is relatively small, and in the case of a fast terminal movement rate, the physical distance between adjacent base stations in the propagation path is larger, and therefore, the propagation paths corresponding to a fast terminal movement rate and a slow terminal movement rate are different.

S3, determining a forward pushing multi-hop information set based on terminal azimuth information and/or terminal motion rate and a propagation path; or determining a forward push multi-hop information set based on at least one of terminal navigation information, current connection base station information and route information, terminal azimuth information and/or terminal movement rate, and a propagation path;

and S4, based on the forward push multi-hop information set, obtaining the forward push hop count.

Specifically, in the case that the terminal is a land-sea terminal, the terminal azimuth information includes a terminal traveling azimuth, where the terminal traveling azimuth is a land-sea terminal traveling azimuth, and refers to an angle (a measurement direction may be arbitrarily set, for example, in a clockwise direction) between a land-sea terminal traveling direction and a reference direction (the reference direction may be arbitrarily set, for example, in a north direction) in a clockwise direction or a counterclockwise direction in a horizontal plane, for determining a traveling direction of the land-sea terminal.

In an embodiment, the terminal azimuth information and the terminal motion rate are input into the propagation path prediction function, so that the dynamic change condition of the base station set of the propagation path can be further obtained, and the set of base stations in the propagation path can be obtained according to the terminal azimuth information, the terminal motion rate and the speed threshold set by the propagation path prediction function and the base station selection range obtained in the step S1.

In another embodiment, the propagation path, the terminal azimuth information, the terminal motion rate, the terminal navigation information and the base station information in the base station selection range are input into a forward push hop count function, and a forward push multi-hop information set multi hop { is outputAnd x represents the forward-push hop count, and even if the road-to-sea terminal runs on the same road, the forward-push hop count of the base station can be the same or different, and when the automobile runs on a congested road section, the forward-push hop count dynamically decreases according to the forward-push hop count function due to slower speed of the automobile.

It will be appreciated that SwitchPath {Sum of Multihop {>All the information sets are ordered sets, and the forward pushing multi-hop information sets can be subsets of generated propagation paths, or can contain first elements in the propagation paths, and other transition base stations for pushing information are added among the elements.

Step 3 (handover request and information push): the source base station initiates a switching request to each target base station, and pushes a switching path prediction information set and trusted holding state information to each target base station.

Step 4-1 (deciding whether the terminal is admitted): after the target base station determines whether the terminal is admitted or not according to the received switching request sent by the source base station and/or the land-sea terminal, reserves the resources required by the wireless resources for providing service for the land-sea terminal and generates land-sea terminal application switching configuration, wherein the application switching configuration comprises the generation of a new session key with the land-sea terminal, and the target base station is ready to execute switching.

Step 4-2 to step 4-N (next N hop information push): after receiving the switching path prediction information set and the credible holding state information sent by the source base station, the target base station pushes the credible holding state information and the switching path prediction information set to the 1-N-hop base station according to the forward pushed multi-hop information set and a push elimination algorithm.

Step 5 (handover request acknowledgement): the target base station transmits a handover request acknowledgement message to the source base station, and starts to perform handover of the physical layer L1/link layer L2.

Step 6 (RRC reset): the source base station sends an RRC reset message to the land-based terminal to trigger the land-based terminal to switch to the target base station.

Step 7 (RRC reset complete): after receiving the RRC reset message, the land-sea terminal reconfigures its L1 and L2 layers to complete the switching configuration of the target base station, wherein the switching configuration comprises generating a new session key with the target base station, synchronizing to the target base station by executing random access, and then, the random access is successful, and the land-sea terminal sends the RRC reset confirmation message to the target base station to complete the RRC switching process.

Step 8 (data transmission): the land-sea terminal and the target base station can use the original session key or the new session key to start data security transmission.

It will be appreciated that the process described in steps 0-8 above is described with respect to any one of the different propagation paths. In addition, in the scenario shown in fig. 3, the processes described in steps 0 to 8 are directed to the same base station, and the processes described in steps 0 'to 8' are directed to the opposite base station.

Fig. 4 is a second schematic diagram of a scenario of trusted holding intelligent prediction of mobile communication according to an embodiment of the present invention, where, as shown in fig. 4, when a base station is located in the middle of a bidirectional traffic road, the base station simultaneously pushes bidirectional trusted holding status information of a bidirectional running land-sea terminal, and the two directions are equal to each other. The source base station in the coverage area of the land-sea terminal is positioned in the middle of the road, and after receiving the signal measurement report and the credible holding state information sent by the land-sea terminal, the source base station can push the credible holding state information of the land-sea terminal to the target base station which runs in the same direction with the land-sea terminal. Because the running directions of the automobiles at the two sides of the base station are opposite, the source base station provides communication services for the land-sea terminals in the two moving directions at the same time. The source base station sends the credible holding state information to the two directions in a peer-to-peer mode, and no primary and secondary parts exist.

It should be noted that, in the scenario shown in fig. 4, specific steps of the method for trusted-keeping intelligent prediction of mobile communication may also include steps 0 to 8 in fig. 3, which are not described herein. It will be appreciated that the process described in steps 0-8 of fig. 4 is directed to a land-sea terminal of one direction of motion, and the process described in steps 0 '-8' is directed to a land-sea terminal of another direction of motion.

In an exemplary land-sea terminal scenario, taking a road side base station switching as an example when a user mobile phone communicates in an automobile running at a high speed, the method specifically comprises the following steps:

stage 1 before switching

Step 1-0: the user takes the automobile to run on a certain loop expressway and makes a call by using a mobile phone. The source base stations on two sides of the road send measurement configuration information (such as measurement objects, reporting configuration, measurement identifiers, measurement intervals, measurement start threshold, speed state parameters and other parameters, the reporting period of signal measurement reports, the reporting number of the signal measurement reports and the like) to the mobile phone so as to request the mobile phone to upload the signal measurement reports. The source base station optionally sends trusted holding state configuration information (including location parameters (GPS/beidou information, navigation information, traveling azimuth, etc.) of the mobile phone, attribute parameters (motion rate, terminal identity information, processing capability, etc.) of the mobile phone, security policies of the mobile phone (whether the switching process supports updating session keys, key negotiation algorithm identification, whether air interface data is encrypted and integrity protected, etc.) to the mobile phone, and requests the mobile phone to send trusted holding state information.

Step 1-1: the mobile phone uploads a signal measurement report according to the configuration of base stations at two sides of the expressway and simultaneously transmits the signal measurement report to a source base station gNB currently communicating with the mobile phone ₁ The trusted maintenance state information (such as authentication context information between the mobile phone and a current communication source base station, GPS data of the mobile phone, an inner ring or an outer ring of a certain ring line of the mobile phone, a specific road section of the current ring line of the mobile phone, the running speed of the automobile being 80km/h, the current time and the name/sequence of the last 1-N hop base stations connected with the mobile phone) is pushed. When the opposite side roadside base station opposite to the running direction of the automobile receives the signal measurement report sent by the mobile phone, the opposite side roadside base station responds or does not respond to the mobile phone according to the requirement.

Step 1-2: source base station gNB currently communicating with mobile phone ₁ And deciding whether to switch or not according to the signal measurement report and the radio resource management information RRM. Simultaneous source base station gNB ₁ And predicting which road side base stations are possibly accessed by 1-N hops under the mobile phone and the access sequence (namely obtaining a switching path prediction information set) by adopting machine learning or an artificial intelligent algorithm according to the trusted holding state information.

Step 1-3: the quality of the call will be degraded if communication with the source base station is continued due to the rapid movement of the handset in the car. Source base station gNB ₁ Target base station gNB capable of providing communication service for mobile phone to next target base station gNB on same side of automobile running direction ₂ Transmitting a handover request message to a transparent radio resource control container RRC including a target cell number cell ID,（/>Representing keys obtained by a terminal and a base station when performing horizontal or vertical key derivation), source base station gNB ₁ The information of the mobile phone such as the radio network temporary identifier C-RNTI, the line resource management RRM configuration and the like is provided with a key derived from the base station side. Simultaneously, the trusted status information is kept, and the source base station gNB ₁ Predicted handover path prediction informationAggregation pushing target base station gNB consistent with automobile travelling direction ₂ 。

Step 1-4: by the target base station gNB ₂ And controlling the mobile phone to be accessed.

Step 1-5: target base station gNB ₂ After allowing the mobile phone to be accessed, preparing for switching and guiding the mobile phone to a source base station gNB ₁ The handover request confirm message, which includes a transparent container, is transmitted as a radio resource control message RRC to the terminal to perform handover. Simultaneous target base station gNB ₂ Pushing the credible holding state information and predicting the switching path to the downward 1-N-hop base station according to the pre-switching path.

Stage 2 of switching execution

Step 2-1: source base station gNB ₁ The RRC reset message is sent to the mobile phone to trigger the handover, the message comprises a target cell number cell ID, a new C-RNTI and a target base station gNB ₂ Is a security algorithm identifier of (c). After receiving the message, the handset starts deriving a new key between the handset and the target base station.

Step 2-2: the mobile phone sends RRC reset completion information to the target base station gNB ₂ And completing the Radio Resource Control (RRC) switching process.

Step 2-3: mobile phone and target base station gNB ₂ The application of the new session key starts the secure transmission of data.

Based on any of the above embodiments, fig. 5 is a third schematic diagram of a scenario of mobile communication trusted keeping intelligent prediction provided by the embodiment of the present invention, where, as shown in fig. 5, in a scenario where a terminal is a pedestrian terminal, terminal azimuth information includes a terminal traveling azimuth and/or a terminal traveling opening angle, where the terminal traveling azimuth is a pedestrian terminal traveling azimuth θ, and refers to an included angle (a metering direction may be arbitrarily set, and a clockwise direction is taken as an example) between a pedestrian terminal traveling direction and a reference direction (the reference direction may be arbitrarily set, and the north direction is taken as an example) along a clockwise direction or a counterclockwise direction in a horizontal plane, so as to determine a traveling direction of the pedestrian terminal; the terminal travel opening angle is the pedestrian terminal travel opening angle alpha, which means that in the horizontal plane, the pedestrian terminal is taken as a vertex, the advancing direction is taken as a central axis, the opening angles formed by alpha/2 angles on two sides of the central axis, and the base station range shape of the pedestrian terminal which is possibly connected in the future in the traveling process is a sector.

It is understood that the advancing direction of the pedestrian terminal may be any direction, or the advancing direction may be changed arbitrarily halfway. The pedestrian terminal speed is determined by the walking speed. The pedestrian terminal covers the connectable base station, i.e. the base station capable of participating in its communication and switching, with a sector of opening angle alpha, the coverage shape being a sector area with the terminal as the vertex and the opening angle alpha. The traveling direction of the pedestrian terminal is determined by the angle θ between the reference direction (the reference direction may be any direction, and the north direction is taken as an example) and the opening angle centerline α/2 direction. Three states of time t1, t2 and t3 (t 1< t2< t 3) experienced in the advancing process of the pedestrian terminal are selected for analysis. If the advancing direction of the pedestrian terminal is unchanged, the azimuth angle theta is unchanged, and the pedestrian terminal performs pushing of the credible maintenance state information on the next hop base station in the coverage area; if the travelling direction is changed, the azimuth angle theta is changed along with the change, the pedestrian terminal calculates the base station covered by the terminal through a certain algorithm or formula, and the next hop base station in the coverage area is pushed with the credible maintenance state information. It should be understood that the annular dashed line shown in fig. 5 represents an annular ring where the physical location of the base station is located.

Fig. 5 is a schematic diagram of a trusted-keeping intelligent prediction scenario of mobile communication with a pedestrian moving forward direction unchanged, and fig. 6 is a schematic diagram of a trusted-keeping intelligent prediction scenario of mobile communication provided by an embodiment of the present invention, as shown in fig. 6.

Fig. 7 is a flow chart of a method for intelligently predicting the credibility of mobile communication in a pedestrian terminal scene, as shown in fig. 7, where the method includes:

step 0 (measurement configuration information): the source base station sends measurement configuration information to the pedestrian terminal to request the pedestrian terminal to send a signal measurement report. Optionally, the source base station sends the trusted holding state configuration information to the pedestrian terminal to request the pedestrian terminal to send the trusted holding state information.

It is understood that the source base station refers to a base station that is being connected to a pedestrian terminal. Since the pedestrian terminal does not have the road directivity principle of the land-sea terminal movement, there is no distinction between the same-side base station and the opposite-side base station.

Step 1 (measurement report, trusted hold status information transmission): the pedestrian terminal generates a signal measurement report according to the measurement configuration information sent by the source base station, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the source base station. Meanwhile, the pedestrian terminal can generate the trusted holding state information according to the trusted holding state configuration information sent by the source base station and send the trusted holding state information to the source base station, or the pedestrian terminal can actively push the trusted holding state information to the source base station according to the configuration information of the pedestrian terminal.

s2, determining a propagation path based on a base station selection range and base station information in the base station selection range; or determining a propagation path based on at least one of route information, a terminal movement rate, terminal navigation information, terminal azimuth information, and base station information within a base station selection range and a base station selection range;

Specifically, the terminal motion state is walking, and the propagation path is limited by the coverage range of the pedestrian terminal travel opening angle alpha and the travel azimuth angle theta. Assume that a next hop base station set which can be communicated with a pedestrian terminal in any direction (360-degree range) isThe pedestrian terminal advancing opening angle alpha at the current moment of the pedestrian terminal ₁ Azimuth angle of travel theta ₁ Inputting a propagation path prediction function to obtain a base station set χ of forward pushing next hop determined by a source base station based on the motion direction of a pedestrian terminal ₁ （α ₁ ，θ ₁ ). The propagation path prediction function may be used in this scenario to define a selection range for pushing forward a certain hop base station, inputs including but not limited to current terminal azimuth angle information; outputs include, but are not limited to pushing a set of certain hop base stations forward. Similarly, the next i-hop base station set that a pedestrian terminal can communicate in any direction is χ _i The current angle parameter (alpha) of the pedestrian terminal _i ，θ _i ) Inputting the propagation path prediction function to obtain a predicted base station set χ for forward pushing next i hops _i （α _i ，θ _i ) The method comprises the steps of carrying out a first treatment on the surface of the Base station set χ pushing next N hops forward _N （α _N ，θ _N ). Then the multi-hop base station set { χ ] is pushed forward ₁ ，χ _i ，……，χ _N Together with the trusted holding state information and the algorithms in the set of prediction algorithms, the propagation path prediction function is input to obtain a predicted propagation path, and each hop of base station in the propagation path is selected from the corresponding set of forward pushing base stations. And inputting the propagation path, the azimuth information, the movement rate, the navigation information and the base station information along the way into a forward push hop count function, and outputting a forward push multi-hop information set. The forward-pushed multi-hop information set can be a subset of the generated propagation paths, or can beThe method comprises the steps of including the first elements in a propagation path and adding other transition base stations for pushing information among the elements.

Here, the target base station refers to a next base station providing a communication service for the pedestrian terminal, and the coverage area determined by the traveling opening angle α and the traveling azimuth angle θ of the pedestrian terminal defines the selection range of the target base station, that is, the target base station is selected to switch within the coverage area of the traveling direction of the pedestrian terminal.

Step 4-1 (deciding whether the terminal is admitted): and the target base station decides whether the terminal is admitted or not after receiving a switching request sent by the source base station and/or the pedestrian terminal, reserves the resources required by the wireless resources for providing services for the pedestrian terminal and generates pedestrian terminal application switching configuration, wherein the application switching configuration comprises the generation of a new session key with the pedestrian terminal, and the target base station is ready to execute switching.

Step 6 (RRC reset): and the source base station sends an RRC reset message to the pedestrian terminal to trigger the pedestrian terminal to switch to the target base station.

Step 7 (RRC reset complete): after receiving the RRC reset message, the pedestrian terminal reconfigures the L1 and L2 layers thereof to complete the switching configuration of the target base station, wherein the switching configuration comprises the steps of generating a new session key with the target base station, synchronizing to the target base station by executing random access, then successfully executing the random access, and sending the RRC reset confirmation message to the target base station by the pedestrian terminal to complete the RRC switching process.

Step 8 (data transmission): the pedestrian terminal and the target base station can use the original session key or the new session key to start data security transmission.

It will be appreciated that the process described in steps 0-8 above is described with respect to any one of the different propagation paths.

Based on any of the above embodiments, fig. 8 is a schematic diagram of a scenario of mobile communication trusted keeping intelligent prediction provided by the embodiment of the present invention, and as shown in fig. 8, in the case that the terminal is an air terminal, the terminal azimuth information includes at least one of a terminal traveling azimuth, a terminal opening angle to ground, a terminal projection offset plumb angle, a terminal projection offset azimuth, and a terminal ground clearance.

The terminal traveling azimuth is an air terminal traveling azimuth mu, which refers to an included angle between the air terminal traveling direction and a Y-axis direction in a three-dimensional coordinate system (an origin is O, an XOY plane formed by an X axis and a Y axis is a horizontal plane, a Z axis passing O point is perpendicular to the XOY plane and points to the ground), and the Y-axis direction can be set arbitrarily, for example, a positive south direction.

The above-mentioned terminal-to-ground opening angle is the air terminal-to-ground opening angle beta, which means that in the plumb plane (the plane perpendicular to the horizontal plane), the air terminal is used as the vertex, the included angle between two sides of the section is defined as opening angle beta, and the three-dimensional range of the projection of the air terminal to the horizontal plane is conical.

The terminal projection offset plumb angle is an air terminal projection offset plumb angle delta, which refers to an included angle between a conical opening angle central line beta/2 direction of the ground projection of the air terminal and a Z-axis direction (parallel to a horizontal plane normal) in a three-dimensional coordinate system, and is defined as an air terminal projection offset angle delta. When the mid-line of the projection cone of the aerial terminal to the ground is perpendicular to the ground, the delta value is 0.

The terminal projection offset azimuth is an air terminal projection offset azimuth epsilon, which means that the conical opening angle central line beta/2 direction of the ground projection of the air terminal is projected to an XOY plane in a three-dimensional coordinate system, and an included angle between the central line beta/2 direction and the Y-axis direction along the clockwise direction is defined as the air terminal projection offset azimuth epsilon. The projection offset azimuth epsilon may determine the direction of the aerial terminal's projection offset to ground.

The above-mentioned terminal ground clearance height is the aerial terminal ground clearance height h, which refers to the height from the aerial terminal to the ground.

It will be appreciated that the direction of travel of the terminal in the air may be any direction in the context of the terminal being in an aircraft such as a mobile unmanned aerial vehicle or airship. The air terminal speed is determined by the aircraft flight speed. The conical opening angle of the aerial terminal covering downwards is beta, and the height from the ground is h (the higher the coverage is, the larger the lower the coverage is, the smaller the coverage is). The coverage deviation of the aerial terminal to the ground can influence the coverage of the aerial terminal to the ground base station, and the projection deviation angle delta is determined by the included angle delta between the beta/2 direction of the conical opening angle central line and the Z-axis direction in the three-dimensional coordinate system. Selecting a time t experienced in the advancing process of an air terminal ₁ 、t ₂ 、t ₃ （t ₁ <t ₂ <t ₃ ) Three states were analyzed. The base stations capable of being connected in the coverage area of the air terminal are the base stations capable of participating in communication and switching. And the air terminal performs pushing of the credible holding state information to the base stations in the coverage area.

Fig. 9 is a flow chart of a method for trusted-keeping intelligent prediction of mobile communication in an air terminal scenario, which is provided in an embodiment of the present invention, as shown in fig. 9, and includes:

step 0 (measurement configuration information transmission): the source base station transmits measurement configuration information to the air terminal to request the air terminal to transmit a signal measurement report. Optionally, the source base station sends the trusted holding state configuration information to the over-the-air terminal to request the over-the-air terminal to send the trusted holding state information.

It is understood that the source base station refers to a base station that is being connected to an air terminal. Since the air terminal does not have the road directivity principle of land-sea terminal movement, there is no distinction between the same-side base station and the opposite-side base station.

Step 1 (measurement report, trusted hold status information transmission): and the air terminal generates a signal measurement report according to the measurement configuration information sent by the source base station, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the source base station. Meanwhile, the air terminal can generate the trusted holding state information according to the trusted holding state configuration information sent by the source base station and send the trusted holding state information to the source base station, or the air terminal can actively push the trusted holding state information to the source base station according to the configuration information of the air terminal.

Specifically, the terminal is in a flying state, and the propagation path is in the airTerminal travel azimuth μ, aerial terminal-to-ground opening angle β, aerial terminal projection offset plumb angle δ, aerial terminal projection offset azimuth ε, and aerial terminal-to-ground high h coverage limit. Assume that the next hop base station set which can be communicated by the air terminal in any direction of the three-dimensional space is χ ₁ The traveling azimuth angle mu of the air terminal at the current moment ₁ Angle beta of air terminal to ground ₁ Offset plumb angle delta of aerial terminal projection ₁ Offset azimuth epsilon of projection of aerial terminal ₁ Height h from air terminal to ground ₁ Inputting a propagation path prediction function to obtain a base station set χ of forward pushing next hop determined by a source base station based on the azimuth angle information of the air terminal ₁ （μ ₁ ，β ₁ ，δ ₁ ，ε ₁ ，h ₁ ). The propagation path prediction function may be used in this scenario to define a selection range for pushing forward a certain hop base station, inputs including but not limited to current terminal azimuth angle information; outputs include, but are not limited to pushing a set of certain hop base stations forward. Similarly, the next i-hop base station set that an air terminal can communicate in any direction is χ _i The current angle parameter (mu) of the air terminal is calculated _i ，β _i ，δ _i ，ε _i ，h _i ) Inputting the propagation path prediction function to obtain a predicted base station set χ for forward pushing next i hops _i （μ _i ，β _i ，δ _i ，ε _i ，h _i ) The method comprises the steps of carrying out a first treatment on the surface of the Base station set χ pushing next N hops forward _N （μ _N ，β _N ，δ _N ，ε _N ，h _N ). Then the multi-hop base station set { χ ] is pushed forward ₁ ，χ _i ，……，χ _N Together with the trusted holding state information and the algorithms in the set of prediction algorithms, the propagation path prediction function is input to obtain a predicted propagation path, and each hop of base station in the propagation path is selected from the corresponding set of forward pushing base stations. And inputting the propagation path, the azimuth information, the motion rate, the navigation information and the information of the base stations along the way into a forward push hop count function, and outputting a forward push multi-hop information set. The forward-pushed multi-hop information set may be a subset of the generated propagation pathsThe method can also comprise the first elements in the propagation path, and other transition base stations for pushing information are added among the elements.

Here, the target base station refers to a next base station providing communication service for the air terminal, and the coverage area determined by the air terminal travelling azimuth angle μ, the air terminal ground opening angle β, the air terminal projection offset plumb angle δ, the air terminal projection offset azimuth angle ε and the air terminal ground clearance height h defines the selection range of the target base station, that is, the target base station is selected in the ground coverage area in the air terminal travelling direction for switching.

Step 4-1 (deciding whether the terminal is admitted): and the target base station decides whether the terminal is admitted or not after receiving a switching request sent by the source base station and/or the air terminal, reserves resources required by the wireless resources for providing services for the air terminal, and generates an air terminal application switching configuration, wherein the application switching configuration comprises the generation of a new session key with the air terminal, and the target base station is ready to execute switching.

Step 6 (RRC reset): the source base station sends an RRC reset message to the air terminal to trigger the air terminal to switch to the target base station.

Step 7 (RRC reset complete): after receiving the RRC reset message, the air terminal reconfigures the L1 and L2 layers thereof to complete the switching configuration of the target base station, wherein the switching configuration comprises the steps of generating a new session key between the air terminal and the target base station, synchronizing to the target base station by executing random access, and then, the random access is successful, and the air terminal sends the RRC reset confirmation message to the target base station to complete the RRC switching process.

Step 8 (data transmission): the air terminal and the target base station can use the original session key or the new session key to start data security transmission.

Based on any of the above embodiments, fig. 10 is a schematic diagram of a scenario of mobile communication trusted keeping intelligent prediction provided by the embodiment of the present invention, as shown in fig. 10, where a terminal is a ground fixed terminal and a source base station is an air mobile base station, base station azimuth information includes at least one of a coverage angle of a base station antenna, an azimuth angle of the base station antenna, a directional offset angle of the base station antenna, and a ground clearance of the base station.

The coverage opening angle of the base station antenna is the coverage opening angle gamma of the aerial base station antenna, which means that the aerial base station antenna is a rotary antenna, and in a plumb plane (a plane perpendicular to a horizontal plane), the aerial base station antenna is taken as a vertex, and included angles of two sides of a section are formed.

The azimuth angle of the base station antenna is the azimuth angle ζ of the aerial base station antenna, which means an included angle between the direction of the antenna and the Y-axis direction in the three-dimensional coordinate system in the horizontal plane, the X-axis and the Y-axis represent the horizontal plane, the Z-axis represents the plumb face, and the Y-axis direction can be set arbitrarily, taking the south-right direction as an example.

The above-mentioned base station antenna pointing offset angle is the aerial base station antenna pointing offset angle lambda, which refers to the included angle between the direction of the center line of the aerial base station antenna coverage opening angle to the ground and the Z-axis direction (parallel to the normal line of the horizontal plane) in the plumb plane (the plane perpendicular to the horizontal plane). The lambda value is 0 when the aerial base station antenna is perpendicular to the ground in the coverage cone centerline.

The above-mentioned base station ground clearance is the aerial base station ground clearance z, which means that the aerial base station ground clearance is z, the higher the coverage is, the bigger the lower the coverage is.

It will be appreciated that in the scenario where the fixed terminal is located on the ground and the base station is carried in an aircraft such as an unmanned aerial vehicle or airship moving in the air, the air base station maintains continuous communication with the ground mobile terminal by adjusting the orientation of the antenna. The aerial base station antenna is a rotary antenna, the conical opening angle of the antenna covered downwards is gamma, the height from the ground is z (the higher the coverage area is, the larger the lower the coverage area is, the smaller the coverage area is). The azimuth angle of the aerial base station antenna is the included angle zeta between the antenna horizontal plane and the Y-axis direction in the three-dimensional coordinate system (the Y-axis can be any direction, and the south-right direction is taken as an example for the sake of clarity of description). The directional offset of the antenna to the ground can affect the coverage area of the ground terminal, and the directional offset angle of the antenna is determined by an included angle lambda between the gamma/2 direction of the central line of the conical opening angle and the Z-axis direction in the three-dimensional coordinate system. The lambda value is 0 when the aerial base station antenna is perpendicular to the ground in the coverage cone centerline. The ground fixed terminal performs pushing of the credible maintenance state information to the connectable air flight base station.

Fig. 11 is a flow chart of a method for trusted keeping intelligent prediction of mobile communication in a ground fixed terminal and air mobile base station scenario provided by an embodiment of the present invention, as shown in fig. 11, the method includes:

step 0 (measurement configuration information transmission): the source air base station transmits measurement configuration information to the ground fixed terminal to request the ground fixed terminal to transmit a signal measurement report. Optionally, the source air base station transmits the trusted holding state configuration information to the ground fixed terminal to request the ground fixed terminal to transmit the trusted holding state information.

It will be appreciated that the source aerial base station refers to a base station on board an aerial vehicle to which a ground fixed terminal is being connected. Because the ground fixed terminal does not have the road directivity principle of land-sea terminal movement relative to the air mobile base station, the distinction between the same-side base station and the opposite-side base station does not exist.

Step 1 (measurement report, trusted hold status information transmission): the ground fixed terminal generates a signal measurement report according to measurement configuration information sent by the source air base station, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the source air base station. Meanwhile, the ground fixed terminal can generate the credible holding state information according to the credible holding state configuration information sent by the source aerial base station and send the credible holding state information to the source base station, or the ground fixed terminal can actively push the credible holding state information to the source aerial base station according to the configuration information of the ground fixed terminal.

Step 2 (switch path prediction): and the source air base station decides whether to initiate base station switching according to the signal measurement report, the radio resource management information, the credible holding state information and the like, and performs switching path prediction based on the credible holding state information to obtain a switching path prediction information set.

Here, the specific steps of the source air base station for performing handover path prediction based on the trusted holding state information are as follows:

s2, determining a propagation path based on a base station selection range and base station information in the base station selection range; or determining a propagation path based on at least one of route information, a base station movement rate, terminal navigation information, base station azimuth information, and base station information within a base station selection range and a base station selection range;

s3, determining a forward pushing multi-hop information set based on the base station azimuth information and/or the base station motion rate and the propagation path; or determining a forward push multi-hop information set based on at least one of terminal navigation information, current connection base station information and route information, base station azimuth information and/or base station movement rate, and a propagation path;

Specifically, the terminal motion state is static, the terminal motion rate is zero, and the terminal azimuth is the sameThe information is absent, and the motion state of the air mobile base station is flying. The propagation path is limited by the coverage angle gamma of the aerial base station antenna, the azimuth zeta of the aerial base station antenna, the pointing offset angle lambda of the aerial base station antenna and the ground clearance z of the aerial base station. Assume that the next hop base station set which can be communicated with the air base station in any direction of the three-dimensional space is χ ₁ Covering the coverage opening angle gamma of the aerial base station antenna at the current moment ₁ Azimuth zeta of aerial base station antenna ₁ Aerial base station antenna pointing offset angle lambda ₁ Height z from ground of air base station ₁ （γ ₁ ，ζ ₁ ，λ ₁ ，z ₁ ) Inputting a propagation path prediction function to obtain an air base station set χ of a forward push next hop determined by a source air base station based on air base station azimuth angle information ₁ （γ ₁ ，ζ ₁ ，λ ₁ ，z ₁ ). The propagation path prediction function can be used in the scene to limit the selection range of pushing forward a certain jump of air base station, and inputs include but are not limited to current terminal azimuth angle information; outputs include, but are not limited to pushing a set of certain hop base stations forward. Similarly, the next i-hop air base station set that the air base station can communicate in any direction is χ _i The current angle parameter (gamma of the air base station _i ，ζ _i ，λ _i ，z _i ) Inputting the propagation path prediction function to obtain a predicted air base station set χ for forward pushing next i hops _i （γ _i ，ζ _i ，λ _i ，z _i ) The method comprises the steps of carrying out a first treatment on the surface of the Air base station set χ pushing next N hops forward _N （γ _N ，ζ _N ，λ _N ，z _N ). Then forward push multi-hop air base station set { χ } ₁ ，χ _i ，……，χ _N Together with the trusted holding state information and the algorithms in the set of prediction algorithms, the propagation path prediction function is input to obtain a predicted propagation path, and each air base station in the propagation path is selected from the corresponding set of forward push air base stations. Inputting the propagation path, the azimuth information, the motion rate, the navigation information and the information of the base stations along the way into a forward push hop count function, and outputting a forward push multi-hop information setAnd (5) combining. The forward multi-hop information set can be a subset of the generated propagation paths, can also contain the first elements in the propagation paths, and is added with other transition base stations for pushing information.

Step 3 (handover request and information push): the source aerial base station initiates a switching request to each target base station, and pushes a switching path prediction information set and trusted holding state information to each target base station.

The target base station refers to the next air base station providing communication service for the ground fixed terminal, and the air base station can cover the ground fixed terminal with the air base station antenna coverage opening angle gamma, the azimuth angle zeta of the air base station antenna, the air base station antenna pointing deviation angle lambda and the air base station ground clearance z to send a switching request, and meanwhile, the credible holding state information and the switching path predicted by the source air base station are pushed to the target air base station.

Step 4-1 (deciding whether the terminal is admitted): and the target base station decides whether the terminal is admitted or not after receiving a switching request sent by the source aerial base station and/or the ground fixed terminal, reserves wireless resources for providing services for the ground fixed terminal, generates a ground fixed terminal application switching configuration, wherein the application switching configuration comprises the generation of a new session key with the ground fixed terminal, and the target base station is ready to execute switching.

Step 4-2 to step 4-N (next N hop information push): after receiving the switching path prediction information set and the credible holding state information sent by the source aerial base station, the target base station pushes the credible holding state information and the switching path prediction information set to the 1-N hop base stations according to the forward pushed multi-hop information set and a push elimination algorithm.

Step 5 (handover request acknowledgement): the target base station sends a switching request confirmation message to the source aerial base station and starts to execute the switching of the physical layer L1/link layer L2.

Step 6 (RRC reset): the source aerial base station sends RRC reset information to the ground fixed terminal to trigger the pedestrian terminal to switch to the target base station.

Step 7 (RRC reset complete): after receiving the RRC reset message, the ground fixed terminal reconfigures the L1 and L2 layers thereof to complete the switching configuration of the target base station, wherein the switching configuration comprises the steps of generating a new session key between the ground fixed terminal and the target base station, synchronizing to the target base station by executing random access, and then successfully executing the random access, and the ground fixed terminal sends the RRC reset confirmation message to the target base station to complete the RRC switching process.

Step 8 (data transmission): the ground fixed terminal and the target base station can use the original session key or the new session key to start data security transmission.

Based on any of the above embodiments, fig. 12 is a schematic diagram of a scenario of trusted keeping intelligent prediction of mobile communication provided by the embodiment of the present invention, as shown in fig. 12, in a case where a terminal is a ground mobile terminal and a source base station is an air mobile base station, the terminal azimuth information includes a terminal traveling azimuth angle, and the base station azimuth information includes at least one of a coverage angle of a base station antenna, an azimuth angle of the base station antenna, a directional offset angle of the base station antenna, and a base station ground clearance, where the terminal traveling azimuth angle is a traveling azimuth angle η of the ground mobile terminal in a horizontal plane, and an included angle (a metering direction may be arbitrarily set, for example, a clockwise direction) between a traveling direction of the ground mobile terminal and a reference direction (a reference direction may be arbitrarily set, for example, a north direction may be arbitrarily set) in a clockwise direction, for determining a traveling direction of the ground mobile terminal.

It will be appreciated that in the scenario where the mobile terminal is located on the ground and the base station is carried in an aircraft such as an unmanned aerial vehicle or airship moving in the air, the air base station maintains continuous communication with the ground mobile terminal by adjusting the orientation of the antenna. The advancing direction of the ground mobile terminal is determined by the included angle eta between the north direction and the advancing direction. The aerial base station antenna is a rotary antenna, and the angle is described by adopting the same parameter marks. The antenna covers downward with a conical opening angle gamma and a height z from the ground (higher coverage, larger, lower coverageThe smaller the range). The directional offset of the antenna to the ground can affect the coverage area of the ground terminal, and the directional offset angle of the antenna is determined by an included angle lambda between the gamma/2 direction of the central line of the conical opening angle and the Z-axis direction in the three-dimensional coordinate system. Selecting time t experienced in the advancing process of the ground mobile terminal ₁ 、t ₂ 、t ₃ （t ₁ <t ₂ <t ₃ ) Three states were analyzed. The ground mobile terminal performs pushing of the credible maintenance state information to the connectable air flight base station.

Fig. 13 is a flow chart of a method for trusted keeping intelligent prediction of mobile communication in a ground mobile terminal and air mobile base station scenario provided by an embodiment of the present invention, as shown in fig. 13, the method includes:

Step 0 (measurement configuration information transmission): the source air base station transmits measurement configuration information to the ground mobile terminal to request the ground mobile terminal to transmit a signal measurement report. Optionally, the source air base station transmits the trusted holding state configuration information to the ground mobile terminal to request the ground mobile terminal to transmit the trusted holding state information.

It will be appreciated that the source aerial base station refers to a base station on board an aerial vehicle to which a ground mobile terminal is being connected. Because the ground mobile terminal has no road directivity principle of land-sea terminal motion relative to the air base station, the distinction between the same-side base station and the opposite-side base station does not exist.

Step 1 (measurement report, trusted hold status information transmission): the ground mobile terminal generates a signal measurement report according to measurement configuration information sent by the source air base station, and uploads the signal measurement report according to a trigger mode of reporting the signal measurement report set by the source air base station. Meanwhile, the ground mobile terminal can generate the credible holding state information according to the credible holding state configuration information sent by the source aerial base station and send the credible holding state information to the source aerial base station, or the ground mobile terminal can actively push the credible holding state information to the source aerial base station according to the configuration information of the ground mobile terminal.

s2, determining a propagation path based on at least one of route information, terminal movement rate, base station movement rate, terminal navigation information, terminal azimuth information and base station azimuth information, and base station selection range and base station information in the base station selection range;

s3, determining a forward pushing multi-hop information set based on at least one of terminal azimuth information, terminal motion rate, base station azimuth information and base station motion rate and a propagation path; or determining a forward pushing multi-hop information set based on at least one of terminal navigation information, current connection base station information and route information, and at least one of terminal azimuth information, terminal movement rate, base station azimuth information and base station movement rate, and a propagation path;

Specifically, the motion state of the terminal includes walking, bicycle, car, etc., and the motion state of the air mobile base station is flying. The propagation path is limited by the coverage of the ground mobile terminal traveling azimuth angle eta, the aerial base station antenna coverage opening angle gamma, the azimuth angle zeta of the aerial base station antenna, the aerial base station antenna pointing offset angle lambda and the aerial base station ground clearance height z. Specifically, assume that the next-hop air base station set of the ground mobile terminal capable of being communicated in any direction of the air is χ ₁ Faceted mobile terminal travel azimuth at presentη ₁ Aerial base station antenna coverage opening angle gamma ₁ Azimuth zeta of aerial base station antenna ₁ Aerial base station antenna pointing offset angle lambda ₁ Height z from ground of air base station ₁ （η ₁ ，γ ₁ ，ζ ₁ ，λ ₁ ，z ₁ ) Inputting a propagation path prediction function to obtain a base station set χ of forward pushing next hop determined by a source aerial base station based on the azimuth angle information of the ground mobile terminal ₁ （η ₁ ，γ ₁ ，ζ ₁ ，λ ₁ ，z ₁ ). The propagation path prediction function can be used in the scene to limit the selection range of pushing forward a certain jump of air base station, and inputs include but are not limited to current terminal azimuth angle information; outputs include, but are not limited to pushing a set of certain hop base stations forward. Similarly, the ground mobile terminal is x in the set of the next i-hop air base stations which can be communicated in any direction of the air _i The current angle parameter (eta) of the ground mobile terminal _i ，γ _i ，ζ _i ，λ _i ，z _i ) Inputting the propagation path prediction function to obtain a predicted air base station set χ for forward pushing next i hops _i （η _i ，γ _i ，ζ _i ，λ _i ，z _i ) The method comprises the steps of carrying out a first treatment on the surface of the Air base station set χ pushing next N hops forward _N （η _N ，γ _N ，ζ _N ，λ _N ，z _N ). Then forward push multi-hop air base station set { χ } ₁ ，χ _i ，……，χ _N Together with the trusted holding state information and the algorithms in the set of prediction algorithms, the propagation path prediction function is input to obtain a predicted propagation path, and each air base station in the propagation path is selected from the corresponding set of forward push air base stations. And inputting the direction information, the movement rate, the navigation information and the along-the-way base station information of the propagation path, the ground mobile terminal and the air base station into a forward push hop count function, and outputting a forward push multi-hop information set. The forward multi-hop information set can be a subset of the generated propagation paths, can also contain the first elements in the propagation paths, and is added with other transition base stations for pushing information.

The target base station refers to the next air base station providing communication service for the ground mobile terminal, and the target air base station which can cover the ground mobile terminal with the coverage opening angle gamma of the air base station antenna, the azimuth angle zeta of the air base station antenna, the pointing deviation angle lambda of the air base station antenna and the ground clearance z of the air base station (the travelling azimuth angle eta) sends a switching request, and meanwhile, the reliable holding state information and the switching path predicted by the source air base station are pushed to the target air base station.

Step 4-1 (deciding whether the terminal is admitted): and the target base station decides whether the terminal is admitted or not after receiving a switching request sent by the source aerial base station and/or the ground mobile terminal, reserves wireless resources for providing services for the ground mobile terminal, generates a ground mobile terminal application switching configuration, wherein the application switching configuration comprises the generation of a new session key with the ground mobile terminal, and the target base station is ready to execute switching.

Step 6 (RRC reset): the source aerial base station sends RRC reset information to the ground mobile terminal to trigger the pedestrian terminal to switch to the target base station.

Step 7 (RRC reset complete): after receiving the RRC reset message, the ground mobile terminal reconfigures the L1 and L2 layers thereof to complete the switching configuration of the target base station, wherein the switching configuration comprises the steps of generating a new session key between the ground mobile terminal and the target base station, synchronizing to the target base station by executing random access, and then successfully executing the random access, and sending the RRC reset confirmation message to the target base station by the ground mobile terminal to complete the RRC switching process.

Step 8 (data transmission): the ground mobile terminal and the target base station can use the original session key or the new session key to start data security transmission.

Based on any of the above embodiments, fig. 14 is a schematic structural diagram of a trusted-keeping intelligent prediction apparatus for mobile communication according to the present invention, as shown in fig. 14, the apparatus includes:

A prediction unit 1410, configured to, in a case where it is determined to perform base station handover, perform handover path prediction based on trusted holding state information, which is communication state information for supporting handover of communications between base stations, to obtain a handover path prediction information set;

a pushing unit 1420, configured to determine a set of target base stations of different propagation paths from the set of handover path prediction information, and push the set of handover path prediction information and the trusted holding state information to each target base station in the set of target base stations of different propagation paths, so that each target base station performs handover preparation, and push the set of handover path prediction information and the trusted holding state information to a multi-hop base station in the set of handover path prediction information;

and a handover unit 1430 for, when receiving the handover request acknowledgement information returned by the terminal or the target base station based on the handover request, switching to the target base station.

The mobile communication credible maintenance intelligent prediction device provided by the embodiment of the invention obtains the switching path prediction information set by carrying out switching path prediction based on the credible maintenance state information, and pushes the credible maintenance state information and the switching path prediction information set to each target base station of different propagation paths in the switching path prediction information set and the subsequent multi-hop base station in advance, so that the mobile communication terminal can realize intelligent and efficient seamless safe switching, thereby providing continuous high-quality communication service for users.

Other embodiments or specific implementation manners of the mobile communication trust-maintaining intelligent prediction device provided by the present invention may refer to the above method embodiments, and are not described herein.

Fig. 15 illustrates a physical structure diagram of an electronic device, as shown in fig. 15, which may include: a processor 1510, a communication interface (Communications Interface) 1520, a memory 1530, and a communication bus 1540, wherein the processor 1510, the communication interface 1520, and the memory 1530 communicate with each other via the communication bus 1540. The processor 1510 may invoke logic instructions in the memory 1530 to perform a trusted remain intelligent prediction method for mobile communications, the method comprising: under the condition that the base station is determined to be switched, switching path prediction is carried out based on trusted holding state information, so as to obtain a switching path prediction information set, wherein the trusted holding state information is communication state information used for supporting communication switching between base stations; determining target base station sets of different propagation paths from the switching path prediction information sets, pushing the switching path prediction information sets and the credible holding state information to each target base station in the target base station sets of different propagation paths so that each target base station executes switching preparation, and pushing the switching path prediction information sets and the credible holding state information to multi-hop base stations in the switching path prediction information sets; and switching to the target base station under the condition that the terminal or the target base station receives the switching request confirmation information returned by the switching request.

Further, the logic instructions in the memory 1530 described above may be implemented in the form of software functional units and may be stored on a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of performing a method of trusted preserving intelligent prediction of mobile communication provided by the methods described above, the method comprising: under the condition that the base station is determined to be switched, switching path prediction is carried out based on trusted holding state information, so as to obtain a switching path prediction information set, wherein the trusted holding state information is communication state information used for supporting communication switching between base stations; determining target base station sets of different propagation paths from the switching path prediction information sets, pushing the switching path prediction information sets and the credible holding state information to each target base station in the target base station sets of different propagation paths so that each target base station executes switching preparation, and pushing the switching path prediction information sets and the credible holding state information to multi-hop base stations in the switching path prediction information sets; and switching to the target base station under the condition that the terminal or the target base station receives the switching request confirmation information returned by the switching request.

In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform a method of trusted remain intelligent prediction of mobile communications provided by the above methods, the method comprising: under the condition that the base station is determined to be switched, switching path prediction is carried out based on trusted holding state information, so as to obtain a switching path prediction information set, wherein the trusted holding state information is communication state information used for supporting communication switching between base stations; determining target base station sets of different propagation paths from the switching path prediction information sets, pushing the switching path prediction information sets and the credible holding state information to each target base station in the target base station sets of different propagation paths so that each target base station executes switching preparation, and pushing the switching path prediction information sets and the credible holding state information to multi-hop base stations in the switching path prediction information sets; and switching to the target base station under the condition that the terminal or the target base station receives the switching request confirmation information returned by the switching request.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for trusted maintenance intelligent prediction of mobile communications, comprising:

2. The method for intelligent prediction of mobile communication according to claim 1, wherein the method is applied to a source base station, and the determining to perform base station handover comprises:

and/or the number of the groups of groups,

3. The method for intelligent prediction of the trust maintenance of mobile communication according to claim 1, wherein the method is applied to a terminal, and the determining of base station handover comprises:

4. The method for intelligently predicting the trust maintenance of mobile communication according to claim 1, wherein the method is applied to other base stations except the source base station, the other base stations comprise at least one target base station, and the determining for base station switching comprises:

And/or the number of the groups of groups,

5. The method according to any one of claims 1 to 4, wherein the trusted holding state information includes generating an air interface session key parameter, a key negotiation algorithm identification of a terminal, and a forward push multi-hop information set;

6. The method for intelligently predicting the trusted holding of mobile communication according to claim 5, wherein said performing handover path prediction based on said trusted holding state information to obtain a set of handover path prediction information comprises:

7. The method for intelligent prediction of the trust maintenance of mobile communication according to claim 6, wherein in the case that the terminal is a land-sea terminal, the terminal azimuth information includes a terminal traveling azimuth;

8. The method according to claim 6, wherein in the case that the terminal is a pedestrian terminal, the terminal azimuth information includes a terminal travel azimuth and/or a terminal travel opening angle;

9. The method according to claim 6, wherein in the case that the terminal is an air terminal, the terminal azimuth information includes at least one of a terminal traveling azimuth, a terminal opening angle to ground, a terminal projection offset plumb angle, a terminal projection offset azimuth, and a terminal ground clearance;

10. The method according to claim 6, wherein in the case that the terminal is a ground fixed terminal and the source base station is an air mobile base station, the base station azimuth information includes at least one of a base station antenna coverage angle, an azimuth angle of the base station antenna, a base station antenna pointing offset angle, and a base station ground clearance;

11. The method according to claim 6, wherein in the case where the terminal is a ground mobile terminal and the source base station is an air mobile base station, the terminal azimuth information includes a terminal traveling azimuth angle, and the base station azimuth information includes at least one of a base station antenna coverage angle, an azimuth angle of a base station antenna, a base station antenna pointing offset angle, and a base station ground clearance;

12. The method for intelligently predicting the trusted holding of mobile communication according to claim 2 or 4, wherein the acquiring trusted holding status information comprises:

And/or the number of the groups of groups,

13. The method according to claim 12, wherein the trusted holding state configuration information is used for generating the trusted holding state information, and the setting manner of the trusted holding state configuration information includes any one of setting through a display interface of the terminal and/or the source base station, setting through a remote device, setting through an application program, and setting through a sensing device mounted on the terminal and/or the base station.

14. The method according to any one of claims 1 to 4, wherein in case the terminal is a land-sea terminal, the source base station comprises a same-side base station and/or a contralateral base station, the same-side base station being a base station which is on the same side as the movement direction of the land-sea terminal and is being connected to the land-sea terminal, and the contralateral base station being a base station which is on the opposite side to the movement direction of the land-sea terminal and is within the coverage of a cell in which the land-sea terminal is located;

15. The method according to any one of claims 1 to 4, wherein the handover path prediction information set includes a forward push multi-hop information set including a propagation path and a forward push hop count, or wherein the forward push multi-hop information set includes at least one of a base station identification, a terminal motion state, route information, base station coverage information, and a propagation path and a forward push hop count.

16. The method according to any of claims 1 to 4, wherein the handover request comprises at least one of a session key and/or a new session key of a source base station, a cell radio network temporary identity of the terminal, radio link configuration information, and identity information of the target base station.

17. A trusted preserving intelligent predictive device for mobile communications, said device comprising:

18. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of trusted maintenance intelligent prediction of mobile communications as claimed in any one of claims 1 to 16 when the program is executed by the processor.

19. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the method of trusted remain intelligent prediction of mobile communication according to any of claims 1 to 16.