A high-speed rail scene switching process optimization method and system

Abstract

The present invention belongs to the field of mobile communication technology, and specifically relates to a method and system for optimizing the switching process in a high-speed rail scenario. The main idea is that the base station sends neighboring cell information and an optimized version of measurement and control information to the terminal in advance; when the terminal meets the switching trigger condition, the optimized version of the switching process is triggered; the target base station, the core network, and the source base station batch process the multi-terminal switching process. By allowing the high-speed rail base station to send neighboring cell information and optimized version of measurement and control information to the terminal in advance, the measurement report content on the terminal side is simplified, and the optimized version of the switching process is directly triggered when the conditions are met, thereby greatly reducing the time and signaling overhead required for switching. In addition, by batch processing of multi-terminal switching processes, the system's ability to handle multiple simultaneous switching requests is further improved, ensuring efficient and stable switching even under extreme conditions such as high-speed rail, significantly improving the user's communication experience.

Description

Technical Field

[0001] The present invention belongs to the field of mobile communication technology, and specifically relates to a high-speed rail scene switching process optimization method and system. Background Art

[0002] In the network coverage of mobile communications, the high-speed rail scenario has always been a particularly complex scenario. Due to the characteristics of high-speed rail trains, such as good enclosure, very high speed, high concentration of users, and diverse network coverage scenarios along the high-speed rail, this has brought many challenges to 5G network coverage. Especially during the switching process, due to the fast movement speed of the terminal, it is easy to have problems with untimely switching, which may lead to call interruption or data connection loss. The existing technology usually adopts the following solutions:

[0003] The current handover process mainly relies on the terminal to actively scan the surrounding frequency points to find a suitable neighboring cell when it detects that the signal quality of the serving cell has deteriorated, and report the measurement results to the source base station. After receiving the report, the source base station evaluates whether a handover is needed and coordinates with the target base station and the core network to complete the handover process. However, in a fast-moving environment such as high-speed rail, such a handover mechanism may be inefficient due to the following reasons:

[0004] High signaling load: The terminal needs to frequently send a large amount of measurement report information to the source base station, which increases the signaling traffic on the wireless interface.

[0005] Long switching delay: The process from the terminal detecting the neighboring cell, reporting the measurement report to the final completion of the switching takes a long time, which cannot well adapt to the fast switching requirements in high-speed mobile environments.

[0006] The main problem of the above-mentioned prior art is that in the high-speed rail scenario, due to the fast terminal movement speed, the existing switching process cannot respond in time, which easily causes switching failure or switching delay, affecting the user experience. Summary of the invention

[0007] The purpose of the present invention is to provide a high-speed rail scene switching process optimization method and system, which can speed up the switching process and effectively improve the user perception of the high-speed rail scene to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides a method for optimizing a high-speed rail scene switching process, comprising the following steps:

[0009] The high-speed railway base station sends neighboring cell information and optimized measurement and control information to the terminal in advance through reconfiguration signaling. The neighboring cell information includes the neighboring cell list of itself and the N consecutive sites before and after;

[0010] After receiving the optimized measurement and control information, the terminal directly detects the RSRP value of the neighboring cell. If the preset conditions are met, the optimized switching process is triggered, and the optimized measurement report is reported to the source base station in the optimized format. The optimized measurement report simplifies the measurement information and only needs to report the RSRP of the serving cell and the relative value of RSRP between the serving cell and the neighboring cell.

[0011] After receiving the optimized measurement report measurement information, the source base station directly sends the optimized handover reconfiguration signaling, and the optimized handover reconfiguration signaling omits the information of adding the target cell measurement configuration;

[0012] After receiving the handover reconfiguration signaling, the terminal directly initiates an access request to the target base station and reuses the existing handover process to complete the handover process.

[0013] Preferably, the optimized version of the measurement information is sent via 3GPP standard signaling, and the information carried includes but is not limited to: measurement ID, serving cell RSRP, neighbor cell PCI, and neighbor cell RSRP relative value.

[0014] Preferably, it also includes: batch processing of multi-terminal switching process, that is, for NG switching or XN switching, the core network, the target base station and the source base station use signaling with information fields identifying multiple terminals to communicate when processing the switching of multiple terminals.

[0015] Preferably, the NG switching includes: after receiving the switching notification signaling from the target base station, the core network determines that the terminal switching requests exceed a specified number within a period of time, and then sends a text release command to the source base station to realize batch processing of multiple terminals.

[0016] Preferably, the XN switching includes: after receiving the path switching request signaling from the target base station, the core network determines that the terminal switching requests exceed a specified number within a period of time, and then sends a path switching request confirmation to the target base station to achieve batch processing of multiple terminals.

[0017] Preferably, the high-speed railway base station includes a high-speed railway platform base station and a base station along the high-speed railway line, and the neighboring area information of the N sites is set according to demand.

[0018] Preferably, after receiving the terminal, the target base station will again send new neighboring cell information and optimized measurement and control information to the terminal through reconfiguration signaling.

[0019] On the other hand, the present invention provides a high-speed rail scene switching process optimization system, comprising:

[0020] At least one high-speed railway base station, used to send neighboring cell information and optimized measurement and control information to the terminal in advance;

[0021] A plurality of terminal devices, for executing an optimized version of the switching process according to the received information;

[0022] The core network is used to coordinate and batch process switching requests from multiple terminals.

[0023] Preferably, a switching management module is also included, which is used to implement switching management of terminals in high-speed rail scenarios within the base station.

[0024] Preferably, the high-speed railway base station is also used to send down the optimized measurement and control information immediately when the terminal is connected, so that the terminal can start the neighboring area measurement, thus shortening the time of the whole switching process.

[0025] Technical effects and advantages of the present invention: Compared with the prior art, the high-speed rail scene switching process optimization method and system proposed by the present invention have the following advantages:

[0026] This method simplifies the measurement report content on the terminal side by allowing the high-speed rail base station to send neighboring cell information and optimized measurement and control information to the terminal in advance, and directly triggers the optimized switching process when the conditions are met, thereby greatly reducing the time and signaling overhead required for switching. In addition, by batch processing of multi-terminal switching processes, the system's ability to handle multiple simultaneous switching requests is further improved, ensuring efficient and stable switching even under extreme conditions such as high-speed rail, significantly improving the user's communication experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a flow chart of a high-speed rail scene switching process optimization method of the present invention;

[0028] Figure 2 A block diagram of a high-speed rail scene switching process optimization system of the present invention;

[0029] Figure 3 This is a flow chart of NG switching of the present invention;

[0030] Figure 4 FIG. 4 is a flow chart of XN switching of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] The present invention provides a method for optimizing the high-speed rail scene switching process. Figure 1 As shown, the following steps are included:

[0033] Step 1: The high-speed rail base station sends neighboring cell information and optimized measurement and control information to the terminal in advance through reconfiguration signaling. The neighboring cell information includes a list of neighboring cells of itself and N consecutive sites before and after it; further, the high-speed rail base station includes a high-speed rail platform base station and a base station along the high-speed rail line, and the neighboring cell information of the N sites is set according to demand.

[0034] In the high-speed rail scenario, in order to ensure that the terminal can complete the handover between base stations in a timely and efficient manner, the present invention proposes a method for sending neighboring cell information and optimized measurement and control information to the terminal in advance through reconfiguration signaling. Specifically:

[0035] Classification of high-speed rail base stations: The high-speed rail base stations in this solution are not limited to traditional base stations along the high-speed rail, but also include high-speed rail platform base stations. These base stations are distributed according to geographical locations to provide continuous wireless network coverage for high-speed mobile users.

[0036] Neighboring cell information delivery: When a terminal connects to a high-speed railway base station for the first time, the base station sends neighboring cell information to the terminal through RRC (radio resource control) measurement configuration signaling. The neighboring cell information here includes not only the service cell of the current base station, but also the neighboring cell list of N consecutive sites before and after it.

[0037] The N value can be flexibly set according to actual needs, such as 1 or 2 base stations before and after, to ensure that neither handover failure will occur due to missed neighboring cells nor unnecessary air interface transmission burden will be increased due to multiple neighboring cells.

[0038] Optimized measurement and control information content: The measurement and control information content has been specially optimized to simplify the amount of information that the terminal traditionally needs to report. Under normal circumstances, the terminal needs to report detailed parameters such as the serving cell PCI, RSRP, RSRQ and SINR, as well as the neighboring cell PCI, RSRP, RSRQ and SINR. In this solution, the terminal only needs to report the RSRP of the serving cell and the relative value of RSRP between the serving cell and the neighboring cell.

[0039] This design takes the following points into consideration:

[0040] The PCI information of the serving cell is omitted because since the terminal has occupied the cell and reported the measurement report, the base station naturally knows the PCI;

[0041] Reduce the reporting of RSRQ and SINR to reduce the air interface transmission load;

[0042] Report the relative value of neighboring cell RSRP instead of the absolute value, minimize the amount of reported information, and reduce the load of air interface reporting information. For example, in the A3 event, if the serving cell is 55 (-101dbm) and the neighboring cell is 62 (-94dbm), only the relative difference of 7 needs to be reported instead of the complete neighboring cell RSRP value.

[0043] Example Case

[0044] Suppose there is a high-speed train from Beijing to Shanghai, passing through multiple base station coverage areas along the way. When the passenger device (such as a mobile phone) on the train first accesses the high-speed railway base station A located near Beijing South Railway Station, base station A will immediately send neighboring cell information and optimized measurement and control information to all connected terminals through reconfiguration signaling. Here, N is set to 1 base station before and after, which means that base station A will provide neighboring cell information for itself and its previous base station (B) and the next base station (C) at the same time.

[0045] For each terminal, the information it receives contains simplified measurement requirements - it only needs to pay attention to the RSRP of the serving cell and the RSRP changes of the neighboring cells relative to the serving cell. This allows the terminal to detect potential target cells more quickly and quickly trigger the handover process when certain conditions (such as signal strength thresholds) are met, without the need for time-consuming full-band scanning.

[0046] After adopting the above method, the number and time of signaling interactions required in the switching process are significantly reduced, and the switching efficiency is improved. Especially in a fast-moving environment such as a high-speed rail, this method can effectively avoid service interruptions caused by untimely switching and improve the quality of user experience. In addition, by reducing unnecessary measurement information reporting, the signaling load of the wireless interface is reduced, further enhancing the stability and reliability of the system. In summary, this solution not only solves the switching problem in the high-speed rail scenario, but also provides a valuable reference for future high-speed mobile communications.

[0047] Step 2: After receiving the optimized measurement and control information, the terminal directly detects the RSRP value of the neighboring cell. If the preset conditions are met, the optimized switching process is triggered, and the optimized measurement report is reported to the source base station in the optimized format;

[0048] The optimized measurement report simplifies the measurement information and only needs to report the serving cell RSRP and the relative RSRP value between the serving cell and the neighboring cell; further, the optimized measurement information is sent through 3GPP standard signaling, and the information carried includes but is not limited to: measurement ID, serving cell RSRP, neighboring cell PCI and neighboring cell RSRP relative value;

[0049] In the high-speed rail scenario, in order to ensure that the terminal can quickly and accurately switch between base stations, the present invention proposes an optimized terminal side processing method. Specifically:

[0050] Receiving optimized measurement and control information: When a terminal device (such as a smartphone, tablet, etc.) is connected to a high-speed railway base station for the first time, it will immediately receive the optimized measurement and control information sent by the base station through RRC measurement configuration signaling. This information includes but is not limited to neighbor cell lists, measurement frequencies, and specific measurement event requirements.

[0051] Directly detect the RSRP value of neighboring cells: After receiving the optimized measurement and control information, the terminal no longer needs to perform a comprehensive scan of all frequency points according to the conventional scheme, but directly detects the RSRP (reference signal received power) value of the limited number of neighboring cells received. This method significantly speeds up the speed of neighboring cell detection because it reduces unnecessary frequency band search time.

[0052] Triggering the optimized handover process: When the terminal detects that the RSRP value of a neighboring cell meets the preset conditions (for example, the RSRP of the serving cell is lower than a certain threshold, and the relative RSRP value of the neighboring cell exceeds the set threshold), the optimized handover process is automatically triggered. This judgment process is based on the optimized measurement information, that is, it mainly considers the relative RSRP value between the serving cell and the neighboring cell, rather than the absolute RSRP value.

[0053] Submit optimized measurement report: Once the handover process is triggered, the terminal will generate and report the measurement report to the source base station according to the optimized format. The optimized measurement report greatly simplifies the amount of information required to be reported and only needs to include the following key elements:

[0054] Measurement ID: used to identify a specific measurement task;

[0055] Serving cell RSRP: RSRP value of the currently occupied serving cell;

[0056] Neighboring cell PCI: Physical cell identifier (PhysicalCellID) of the potential target neighboring cell;

[0057] Relative neighboring cell RSRP value: the RSRP difference between the serving cell and the neighboring cell.

[0058] The above information is sent via 3GPP standard signaling, ensuring compatibility with the existing network architecture and ensuring the security and reliability of information transmission.

[0059] Example Case

[0060] Assume that there is a high-speed train from Beijing to Shanghai. When passing through a certain section of expressway, the passenger devices (such as mobile phones) on the train are using the services provided by high-speed railway base station A located near Beijing South Railway Station. When the terminal receives the optimized measurement and control information sent by base station A, it starts to directly detect the RSRP values ​​of neighboring cells in the neighboring cell list pre-specified by base station A.

[0061] For example, the terminal finds that the relative RSRP value of a neighboring cell (neighboring cell D) of the front base station B has reached the preset condition (for example, the RSRP of the service cell A is -95dBm, and the RSRP of the neighboring cell D is -88dBm, that is, the relative value is 7dB). At this time, the terminal immediately triggers the optimized handover process and constructs a measurement report in the optimized format, which carries the following information:

[0062] Measurement ID: 0x1234

[0063] Serving cell RSRP: -95dBm

[0064] Neighboring area PCI: 123 (assumed value)

[0065] Neighboring cell RSRP relative value: 7dB

[0066] Subsequently, the terminal sends the optimized measurement report to the source base station A through 3GPP standard signaling to request switching to a new serving cell (neighboring cell D).

[0067] By adopting the above method, the detection time and signaling interaction times required by the terminal during the switching process can be significantly reduced, thereby improving the switching efficiency. Especially in a fast-moving environment such as a high-speed rail, this method can effectively avoid service interruptions caused by untimely switching and improve the quality of user experience. In addition, by reducing unnecessary measurement information reporting, the signaling load of the wireless interface is reduced, further enhancing the stability and reliability of the system.

[0068] Step 3: After receiving the optimized measurement report measurement information, the source base station directly sends the optimized handover reconfiguration signaling, which omits the information of adding the target cell measurement configuration; in the high-speed rail scenario, in order to further improve the handover efficiency and user experience, the present invention proposes an optimized source base station processing method. Specifically:

[0069] Receiving an optimized measurement report: The source base station (for example, base station A currently serving the terminal) receives an optimized measurement report sent by the terminal through 3GPP standard signaling. The report contains simplified information such as measurement ID, serving cell RSRP, neighbor cell PCI, and neighbor cell RSRP relative value.

[0070] Evaluate the need for handover: The source base station quickly determines whether a handover is needed based on the key information in the received optimized measurement report (especially the relative RSRP value of the neighboring cells). If the preset conditions are met (for example, the relative RSRP value of the neighboring cells exceeds a certain threshold), it is confirmed that a handover operation is needed.

[0071] Sending optimized handover reconfiguration signaling: Once it is determined that handover is required, the source base station immediately sends an optimized handover reconfiguration signaling to the terminal. Compared with the traditional handover reconfiguration signaling, the optimized signaling omits the information of "adding target cell measurement configuration" and only contains the following necessary content:

[0072] Radio bearer configuration: ensures that the terminal can continue to maintain its ongoing data session.

[0073] Cell group configuration: specify new service cells and their related parameters.

[0074] Delete source cell measurement configuration: notify the terminal to stop measuring the current serving cell.

[0075] This design aims to reduce the number of signaling interactions, speed up the switching process, and reduce network load.

[0076] Faster switching response: By omitting unnecessary configuration steps, the entire switching process becomes more concise and efficient, reducing switching delays.

[0077] Reduced signaling load: The simplified signaling format reduces the amount of data transmitted, helping to improve network performance, especially in high-density user environments.

[0078] Improve user perception: Faster and smoother switching experience reduces the possibility of call interruption or data loss, significantly improving the user's communication quality.

[0079] Example Case

[0080] Assume that there is a high-speed train from Beijing to Shanghai. When passing a certain section of expressway, the passenger devices (such as mobile phones) on the train are using the services provided by the high-speed railway base station A located near Beijing South Railway Station. When the terminal detects that the relative RSRP value of a neighboring cell (neighboring cell D) of the front base station B reaches the preset condition, the optimized switching process is triggered, and a measurement report is constructed in the optimized format, carrying information including measurement ID, serving cell RSRP, neighboring cell PCI, and neighboring cell RSRP relative value.

[0081] Measurement ID: 0x1234

[0082] Serving cell RSRP: -95dBm

[0083] Neighboring area PCI: 123 (assumed value)

[0084] Neighboring cell RSRP relative value: 7dB

[0085] Subsequently, the terminal sends the optimized measurement report to the source base station A through 3GPP standard signaling. After receiving the report, the source base station A quickly decides to switch to the neighboring cell D based on the key information (especially the relative value of the neighboring cell RSRP is 7dB, which exceeds the set threshold), and immediately prepares to send the optimized version of the handover reconfiguration signaling.

[0086] The content of the optimized switching reconfiguration signaling is as follows:

[0087] Radio bearer configuration: keep existing data sessions unchanged;

[0088] Cell group configuration: specify neighboring cell D as the new serving cell and provide necessary access parameters;

[0089] Delete source cell measurement configuration: instruct the terminal to no longer monitor the current serving cell A.

[0090] After receiving the optimized handover reconfiguration signaling, the terminal directly initiates an access request to the target base station D, and reuses the existing handover process to complete the handover process without waiting for additional configuration instructions.

[0091] By adopting the above method, the number and time of signaling interactions required during the switching process can be significantly reduced, thereby improving the switching efficiency. Especially in a fast-moving environment such as a high-speed rail, this method can effectively avoid service interruptions caused by untimely switching and improve the quality of user experience. In addition, by reducing unnecessary configuration information, the signaling load of the wireless interface is reduced, further enhancing the stability and reliability of the system.

[0092] Step 4: After receiving the handover reconfiguration signaling, the terminal directly initiates an access request to the target base station and reuses the existing handover process to complete the handover process. In the high-speed rail scenario, in order to ensure that the terminal can quickly and seamlessly complete the handover from the source base station to the target base station, the present invention proposes an optimized terminal access method. Specifically:

[0093] Receiving handover reconfiguration signaling: The terminal receives the optimized handover reconfiguration signaling sent by the source base station. The signaling contains simplified information, such as radio bearer configuration, cell group configuration, and deletion of source cell measurement configuration, omitting the step of "adding target cell measurement configuration".

[0094] Directly initiate an access request to the target base station: After receiving the handover reconfiguration signaling, the terminal immediately initiates an access request to the target base station (e.g., neighboring cell D) according to the instructions in the signaling. This process is instant and does not require additional waiting or processing time, thus greatly shortening the handover time window.

[0095] Reuse the existing handover process: When initiating an access request, the terminal reuses the existing handover process, which means that it follows the established standard protocol to complete the entire handover process. This approach not only ensures compatibility, but also simplifies implementation difficulty and reduces possible error points.

[0096] Complete the handover process: After receiving the access request from the terminal, the target base station confirms the connection and establishes a new service relationship. The terminal successfully switches to the target base station and continues to enjoy stable services, while stopping monitoring and communication with the original service base station.

[0097] By adopting the above method, the number and time of signaling interactions required during the switching process can be significantly reduced, thereby improving the switching efficiency. Especially in a fast-moving environment such as a high-speed rail, this method can effectively avoid service interruptions caused by untimely switching and improve the quality of user experience.

[0098] Step 5: Batch processing of multi-terminal handover process, that is, for NG handover or XN handover, the core network, the target base station and the source base station use signaling with a field for identifying multiple terminal information to communicate when processing the handover of multiple terminals.

[0099] Exemplarily, NG switching includes: after receiving the switching notification signaling from the target base station, the core network determines that the terminal switching requests exceed a specified number within a period of time, and then sends a text release command to the source base station to realize batch processing of multiple terminals.

[0100] Specifically, Figure 3 As shown, the NG switching process is optimized:

[0101] 1) Add a field to the handover notification signaling (handvoernotify), UE context release command (UEcontextreleasecommand), and UE context release complete (UEcontextreleasecomplete) to identify each terminal by carrying the IMSI (International Mobile Identity);

[0102] 2) After the core network receives the handover notification signaling (handvoernotify), it determines that the number of terminals exceeds the specified number within a certain period of time, and then sends a UE context release command (UEcontextreleasecommand) to the source base station. The above time can be flexibly set, such as 200ms, 500ms. The above number of terminals can also be flexibly set, such as 20, 50, etc.

[0103] 3) After the source base station releases the above-mentioned multiple terminal resources, it replies to the core network with the UE context release complete (UEContextReleaseComplete).

[0104] Exemplarily, XN switching includes: after receiving the path switching request signaling from the target base station, the core network determines that the number of terminal switching requests exceeds a specified number within a period of time, and then sends a path switching request confirmation to the target base station to achieve batch processing of multiple terminals.

[0105] Specifically, Figure 4 As shown, the XN switching process is optimized:

[0106] 1) Add a field to the path switch request signaling (pathswitchrequest), path switch request confirmation (pathswitchrequestack), and ue context release (uecontextrelease) to identify each terminal by carrying IMSI (International Mobile Identity);

[0107] 2) After the core network receives the path switch request signaling (pathswitchrequest), it determines that the number of terminals exceeds the specified number within a certain period of time, and then sends a path switch request confirmation (pathswitchrequestack) to the target base station. The above time can be flexibly set, such as 200ms, 500ms. The above number of terminals can also be flexibly set, such as 20, 50, etc.

[0108] 3) The target base station sends a UE context release (UEContextRelease) to the source base station, notifying the source base station to release multiple terminal resources.

[0109] For XN switching: the path switching request signaling, path switching request confirmation signaling, and text release signaling of the XN switching process are reused. A new field is added to the above signaling to identify multiple terminal information, so that the core network, target base station, and source base station can batch process multiple terminal switching processes. After the terminal switches to the target base station, the target base station sends the neighboring cell information of itself and the N consecutive sites before and after, as well as the optimized measurement and control information through reconfiguration signaling. The terminal quantity information carried by the target base station when sending the path switching request signaling can be flexibly configured according to actual needs, taking into account the timeliness and efficiency of switching.

[0110] In addition, after receiving the terminal, the target base station will again send new neighboring cell information and optimized measurement and control information to the terminal through reconfiguration signaling. After receiving the optimized handover reconfiguration signaling, the terminal immediately initiates an access request to the target base station. Since the existing handover process is reused, the terminal can quickly complete the handover process without waiting for additional configuration instructions or performing a complex handshake process. After receiving the access request, the target base station confirms the connection and establishes a new service relationship. The terminal smoothly switches to the neighboring cell and continues to enjoy stable communication services.

[0111] In this embodiment, a high-speed rail scene switching process optimization system is also provided. Figure 2 As shown, including:

[0112] At least one high-speed railway base station is used to send neighboring cell information and optimized measurement and control information to the terminal in advance; the high-speed railway base station is also used to send the optimized measurement and control information immediately when the terminal is connected, so that the terminal can start neighboring cell measurement, thereby shortening the time of the entire switching process;

[0113] A plurality of terminal devices, for executing an optimized version of the switching process according to the received information;

[0114] The core network is used to coordinate and batch process handover requests from multiple terminals;

[0115] The switching management module is used to implement switching management of terminals in high-speed rail scenarios within the base station.

[0116] In addition, the above-mentioned high-speed rail base station, terminal equipment, core network and switching management module are also used to implement the other steps of the above-mentioned high-speed rail scene switching process optimization method during execution, which will not be repeated here one by one.

[0117] In summary, this method simplifies the measurement report content on the terminal side by allowing the high-speed rail base station to send neighboring cell information and optimized measurement and control information to the terminal in advance, and directly triggers the optimized switching process when the conditions are met, thereby greatly reducing the time and signaling overhead required for switching. In addition, by batch processing of multi-terminal switching processes, the system's ability to handle multiple simultaneous switching requests is further improved, ensuring efficient and stable switching even under extreme conditions such as high-speed rail, significantly improving the user's communication experience.

[0118] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed rail scene switching process optimization method, characterized in that: The following steps are involved: The high-speed railway base station sends neighboring cell information and optimized measurement and control information to the terminal in advance through reconfiguration signaling. The neighboring cell information includes a list of neighboring cells of itself and N consecutive sites before and after. After receiving the optimized measurement and control information, the terminal directly detects the RSRP value of the neighboring cell. If the preset conditions are met, the optimized switching process is triggered, and the optimized measurement report is reported to the source base station in the optimized format. The optimized measurement report simplifies the measurement information and only needs to report the RSRP of the serving cell and the relative value of RSRP between the serving cell and the neighboring cell. After receiving the optimized measurement report, the source base station directly sends the optimized handover reconfiguration signaling, which omits the information of adding the target cell measurement configuration; After receiving the handover reconfiguration signaling, the terminal directly initiates an access request to the target base station and reuses the existing handover process to complete the handover process; The optimized measurement report is sent via 3GPP standard signaling, and the information carried by the optimized measurement report includes: measurement ID, serving cell RSRP, neighboring cell PCI, and neighboring cell RSRP relative value; Also includes: Batch processing of multi-terminal handover process, that is, for NG handover or XN handover, the core network, target base station and source base station use signaling with multiple terminal information fields to communicate when processing the handover of multiple terminals; The NG switching includes: After receiving the handover notification signaling from the target base station, the core network determines that the number of terminal handover requests exceeds the specified number within a period of time, and then sends a text release command to the source base station to achieve batch processing of multiple terminals; The XN switching includes: After receiving the path switching request signaling from the target base station, the core network determines that the number of terminal switching requests exceeds the specified number within a period of time, and then sends a path switching request confirmation to the target base station to achieve batch processing of multiple terminals.

2. A high-speed rail scene switching process optimization method according to claim 1, characterized in that: The high-speed railway base stations include high-speed railway platform base stations and base stations along the high-speed railway line, and the neighboring area information of N sites is set according to demand.

3. A high-speed rail scene switching process optimization method according to claim 1, characterized in that: After the terminal accesses the target base station, the target base station will again send new neighboring cell information and optimized measurement and control information to the terminal through reconfiguration signaling.

4. A high-speed rail scene switching process optimization system for implementing the method according to any one of claims 1 to 3, characterized in that: include: At least one high-speed railway base station, used to send neighboring cell information and optimized measurement and control information to the terminal in advance; Multiple terminals, used for executing an optimized version of the handover process according to the received neighboring cell information and the optimized version of the measurement and control information; The core network is used to coordinate and batch process switching requests from multiple terminals.

5. A high-speed rail scene switching process optimization system according to claim 4, characterized in that: It also includes a switching management module, which is used to implement switching management of terminals in high-speed rail scenarios within the high-speed rail base station.

6. A high-speed rail scene switching process optimization system according to claim 4, characterized in that: The high-speed railway base station is also used to send optimized measurement and control information immediately when the terminal is connected, so that the terminal can start neighboring area measurement and shorten the time of the entire switching process.

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