A fast switching method based on FTTR networking

Abstract

The present application relates to a fast switching method based on FTTR networking, and relates to the technical field of FTTR networking. The method comprises: a master optical network terminal establishes a connection relationship with a plurality of slave optical network terminals to form an FTTR network, and the master optical network terminal is connected to an external network; each slave optical network terminal monitors the wireless signal strength between the terminal and a mobile terminal in real time, and transmits the monitored wireless signal strength monitoring data to the master optical network terminal according to a preset period; the master optical network terminal determines the location information of the mobile terminal according to the wireless signal strength monitoring data transmitted by each slave optical network terminal; when the location of the mobile terminal changes and meets the preset switching condition, the master optical network terminal sends a switching instruction to the target slave optical network terminal; after receiving the switching instruction, the target slave optical network terminal performs access authentication with the mobile terminal, and after the access authentication is passed, a data transmission channel is established to complete the switching.

Description

Technical Field

[0001] The present application relates to the technical field of FTTR networking, and in particular to a fast switching method based on FTTR networking. Background Art

[0002] With the rapid development of Internet technology and the popularization of smart devices, users' demand for wireless networks is not limited to the expansion of coverage and network speed. Fiber to the Room (FTTR) networking is a new type of high-speed broadband access method. By laying optical fiber directly to each room and combining it with the Optical Network Terminal (ONT), it realizes full optical fiber network coverage within the home or enterprise, providing extremely high bandwidth and stable network connection.

[0003] However, realizing fast switching of mobile terminals in FTTR networks is still a technical problem that needs to be overcome by those skilled in the art. Summary of the invention

[0004] In order to at least partially solve the above technical problems, the present application provides a fast switching method based on FTTR networking.

[0005] In a first aspect, the present application provides a fast switching method based on FTTR networking, which adopts the following technical solution.

[0006] A fast switching method based on FTTR networking, comprising:

[0007] A master optical network terminal establishes a connection relationship with a plurality of slave optical network terminals to form an FTTR network, and the master optical network terminal is connected to an external network;

[0008] Each slave optical network terminal monitors the wireless signal strength between the slave optical network terminal and the mobile terminal in real time, and transmits the monitored wireless signal strength monitoring data to the master optical network terminal according to a preset period;

[0009] The master optical network terminal determines the location information of the mobile terminal according to the wireless signal strength monitoring data transmitted by each of the slave optical network terminals;

[0010] When the position of the mobile terminal changes and meets the preset switching conditions, the master optical network terminal sends a switching instruction to the target slave optical network terminal, and the target slave optical network terminal is the slave optical network terminal with the strongest signal at the current position of the mobile terminal; wherein the preset switching conditions include at least one of the following: the wireless signal strength between the mobile terminal and the currently connected slave optical network terminal is lower than a preset threshold, the wireless signal strength between the mobile terminal and the target slave optical network terminal is higher than the wireless signal strength of the currently connected slave optical network terminal and the difference between the two is greater than a preset difference, and the position change of the mobile terminal exceeds a preset distance range within a preset time period;

[0011] After receiving the switching instruction from the optical network terminal, the target performs access authentication with the mobile terminal, and after the access authentication is passed, a data transmission channel is established to complete the switching.

[0012] Optionally, the master optical network terminal determines the location information of the mobile terminal according to the wireless signal strength monitoring data transmitted by each of the slave optical network terminals, including:

[0013] The optical network terminal receives the wireless signal strength data between the mobile terminal and each slave optical network terminal, and converts the wireless signal strength data into the estimated value of the distance between the mobile terminal and each slave optical network terminal according to a preset wireless signal propagation model;

[0014] The master optical network terminal obtains the predetermined position information of each slave optical network terminal in the FTTR network;

[0015] Taking the position of each slave optical network terminal as the center and taking the estimated distance between the mobile terminal and each slave optical network terminal as the radius, construct a plurality of circles;

[0016] The coordinates of the intersection of any three circles among the multiple circles are solved, and the coordinates of the intersection are used as the position coordinates of the mobile terminal.

[0017] Optionally, before the primary optical network terminal sends the switching instruction, the method further includes:

[0018] The master optical network terminal sends a pre-switching notification to the target slave optical network terminal, and after receiving the pre-switching notification, the target slave optical network terminal performs preparation steps related to mobile terminal access authentication; the preparation steps include pre-loading identity authentication information and related encryption algorithm modules of the mobile terminal;

[0019] If the target slave optical network terminal completes the preparation steps within the preset preparation time, the master optical network terminal formally sends a switching instruction; if not completed, the master optical network terminal re-evaluates the status of the target slave optical network terminal or selects another slave optical network terminal as the new target slave optical network terminal and repeats the above pre-switching notification.

[0020] Optionally, the method further includes:

[0021] The master optical network terminal obtains connection information of the mobile terminals connected thereto reported by each slave optical network terminal, wherein the connection information includes the MAC address, signal strength and location information of the mobile terminal;

[0022] Calculate the location coordinates of all mobile terminals in the current FTTR network based on the connection information;

[0023] Draw a circular area with each slave optical network terminal as the center and a preset radius as the radius, and count the number of mobile terminals in the area;

[0024] When the number of mobile terminals exceeds a preset threshold, it is determined that there are multiple mobile terminals moving in a nearby area in the current area, and the transmission power of the slave optical network terminal is adjusted according to the distribution of mobile terminals and signal interference conditions in the coverage area of ​​each slave optical network terminal.

[0025] Optionally, adjusting the transmission power of the slave optical network terminal according to the distribution of mobile terminals and signal interference conditions in the coverage area of ​​each slave optical network terminal includes:

[0026] Based on the real-time signal strength feedback between each slave optical network terminal and the mobile terminal and the signal interference measurement value between adjacent slave optical network terminals, a power adjustment model is constructed, and the power adjustment model calculates the first transmission power value of the slave optical network terminal in the current area based on the signal propagation loss and the multipath effect, and the first transmission power value is used to minimize interference and ensure signal coverage;

[0027] When it is detected that the user density in a certain area is too high and the interference is aggravated, the master optical network terminal starts the adaptive power adjustment mode, gradually reduces the transmission power of the slave optical network terminals in the area, and simultaneously monitors the signal reception quality of the mobile terminals until the balance threshold between interference and signal strength is reached.

[0028] Optionally, the method further includes:

[0029] The main optical network terminal records the switching events of each mobile terminal and counts the number of switching times of each mobile terminal within a unit time;

[0030] When the number of handovers of a mobile terminal exceeds a set handover threshold, the mobile terminal is marked as a frequently handover terminal;

[0031] For the frequently switched terminals marked, the master optical network terminal obtains the signal strength, noise level, occupancy rate and interference source information of the channels where the slave optical network terminals covering the frequently switched terminals are located to filter out the optical network terminal list;

[0032] The master optical network terminal analyzes the load conditions of each slave optical network terminal and selects slave optical network terminals whose loads meet the requirements to form a candidate set of slave optical network terminals, wherein the load conditions include the number of currently connected mobile terminals and the data traffic load;

[0033] The master optical network terminal sends a scanning instruction to the frequently switched terminal, instructing the frequently switched terminal to scan the signal of the slave optical network terminal in the candidate set and feed back signal quality information, wherein the signal quality information includes a received signal strength indication and a bit error rate;

[0034] According to the signal quality information fed back by the mobile terminal, the master optical network terminal sorts the candidate slave optical network terminals based on signal strength, bit error rate and channel load, and selects the slave optical network terminal with the highest score;

[0035] The master optical network terminal sends a connection establishment instruction to the selected slave optical network terminal and the frequent switching terminal to establish a connection between the two.

[0036] Optionally, the method further includes:

[0037] Multiple transmission paths are constructed between the mobile terminal and the slave optical network terminal and between the slave optical network terminal and the master optical network terminal; wherein the multiple wireless transmission paths are constructed using wireless links of different frequency bands, wherein the same frequency band includes 2.4 GHz and 5 GHz frequency bands; multiple optical fiber transmission paths are constructed using the master optical network terminal and the slave optical network terminals connected with different optical fiber interfaces;

[0038] Assign a unique path identifier to each transmission path, and establish a path management module in the mobile terminal, the slave optical network terminal and the master optical network terminal, wherein the path management module is used for path identification, monitoring and switching control;

[0039] The path management module monitors the real-time status information of each transmission path at fixed time intervals, and classifies and stores the monitored path status information according to the path identifier;

[0040] Upload the path status information to the path status database of the main optical network terminal for summary analysis;

[0041] The main optical network terminal calculates the allocation weight of each path using a dynamic traffic allocation algorithm based on the data in the path state database, wherein the dynamic traffic allocation algorithm takes maximizing the overall transmission efficiency and minimizing the transmission delay as the objective function;

[0042] The main optical network terminal dynamically distributes the data traffic of the mobile terminal to each transmission path in units of data packets according to the calculated distribution weights, and distributes the data packets to different paths for transmission according to the weights of each path;

[0043] When the status monitoring module of a transmission path detects that the path is faulty or congested, it sends a path abnormality report to the main optical network terminal;

[0044] After receiving the report, the main optical network terminal reallocates the data traffic originally allocated to the current path to other available paths.

[0045] Optionally, the main optical network terminal is electrically connected to a temperature and humidity sensor; the temperature and humidity sensor is used to detect the temperature and humidity of the area where the FTTR network is located;

[0046] When determining the location information of the mobile terminal from the wireless signal strength monitoring data transmitted by the optical network terminal, the method further comprises:

[0047] The main optical network terminal obtains the environmental data collected by the temperature and humidity sensor;

[0048] The master optical network terminal corrects the estimated value of the distance between the mobile terminal and each slave optical network terminal obtained by converting the wireless signal strength data according to the influence of different environmental data on the wireless signal propagation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a flow chart of a fast switching method based on FTTR networking in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1 The present application is further described with specific embodiments:

[0051] The present application embodiment discloses a fast switching method based on FTTR networking, comprising the following steps:

[0052] Step 101, the master optical network terminal establishes a connection relationship with multiple slave optical network terminals to form an FTTR network, and the master optical network terminal is connected to the external network. Specifically, the master optical network terminal is responsible for establishing a connection with the external network in the FTTR network, and coordinating and managing multiple slave optical network terminals, and is responsible for processing network traffic, managing network configuration, and deciding when to switch according to signal strength. The slave optical network terminals are distributed in different locations of a house or building, connected to the master optical network terminal through optical fiber, and provide wireless network services for nearby mobile terminals.

[0053] Step 102: Each slave optical network terminal monitors the wireless signal strength between the slave optical network terminal and the mobile terminal in real time, and transmits the monitored wireless signal strength monitoring data to the master optical network terminal according to a preset period. Specifically, the mobile terminal is a mobile electronic device carried by the user, such as a smart phone, a tablet computer or other device that can connect to a wireless network.

[0054] Step 103: The master optical network terminal determines the location information of the mobile terminal based on the wireless signal strength monitoring data transmitted by each slave optical network terminal. Specifically, the wireless signal strength is the signal strength received by the mobile terminal from the wireless access point (i.e., the slave optical network terminal), which is usually expressed in dBm. The higher the wireless signal strength value, the stronger the signal.

[0055] Step 104: When the position of the mobile terminal changes and meets the preset switching conditions, the master optical network terminal sends a switching instruction to the target slave optical network terminal, and the target slave optical network terminal is the slave optical network terminal with the strongest signal at the current position of the mobile terminal; wherein the preset switching conditions include at least one of the following: the wireless signal strength between the mobile terminal and the currently connected slave optical network terminal is lower than a preset threshold, the wireless signal strength between the mobile terminal and the target slave optical network terminal is higher than the wireless signal strength of the currently connected slave optical network terminal and the difference between the two is greater than a preset difference, and the position change of the mobile terminal exceeds a preset distance range within a preset time period.

[0056] Step 105: After receiving the switching instruction from the optical network terminal, the target performs access authentication with the mobile terminal, and after the access authentication is passed, a data transmission channel is established to complete the switching. Specifically, during the network switching process, in order to ensure security and service quality, before establishing a new data transmission channel, the target optical network terminal will verify the identity of the mobile terminal.

[0057] Specifically, the master optical network terminal serves as the "brain" of the entire system. It receives signal strength data from each slave optical network terminal, analyzes this data to accurately locate the position of the mobile terminal, and determines whether network switching is required and determines the best target slave optical network terminal based on preset switching conditions, such as signal strength threshold, signal strength difference, and position change distance. Once the switching condition is triggered, the master optical network terminal immediately sends a command to the selected target slave optical network terminal, which then starts the access authentication process with the mobile terminal and quickly establishes a new data transmission channel after successful authentication, thereby completing a smooth and fast network switch. This method reduces connection interruptions or delays caused by unstable signals, improves the continuity and stability of data transmission when users move between multiple rooms or multiple areas, and provides better quality wireless network services.

[0058] As a specific implementation of a fast switching method based on FTTR networking, the master optical network terminal determines the location information of the mobile terminal based on the wireless signal strength monitoring data transmitted by each of the slave optical network terminals, including:

[0059] The optical network terminal receives the wireless signal strength data between the mobile terminal and each slave optical network terminal, and converts the wireless signal strength data into the estimated value of the distance between the mobile terminal and each slave optical network terminal according to a preset wireless signal propagation model;

[0060] The master optical network terminal obtains the predetermined position information of each slave optical network terminal in the FTTR network;

[0061] Taking the position of each slave optical network terminal as the center and taking the estimated distance between the mobile terminal and each slave optical network terminal as the radius, construct a plurality of circles;

[0062] The coordinates of the intersection of any three circles among the multiple circles are solved, and the coordinates of the intersection are used as the position coordinates of the mobile terminal.

[0063] Specifically, the wireless signal strength data transmitted by the slave optical network terminal and the mobile terminal is received by the master optical network terminal, and converted into a distance estimation value according to a preset wireless signal propagation model. Combined with the established position information of each slave optical network terminal in the FTTR network, multiple circles are constructed with the slave optical network terminal position as the center and the distance estimation value as the radius, and the coordinates of the intersection of any three circles are solved to determine the position coordinates of the mobile terminal. The positioning model is constructed by using the distance relationship reflected by the signal strength correlation between the slave optical network terminals at multiple known positions and the mobile terminal, and the two-dimensional plane positioning of the mobile terminal is realized within the coverage of the FTTR network, reducing problems such as resource misallocation and switching delay caused by inaccurate positioning.

[0064] As a specific implementation of a fast switching method based on FTTR networking, before the main optical network terminal sends a switching instruction, the method also includes:

[0065] The master optical network terminal sends a pre-switching notification to the target slave optical network terminal, and after receiving the pre-switching notification, the target slave optical network terminal performs preparation steps related to mobile terminal access authentication; the preparation steps include pre-loading identity authentication information and related encryption algorithm modules of the mobile terminal;

[0066] If the target slave optical network terminal completes the preparation steps within the preset preparation time, the master optical network terminal formally sends a switching instruction; if not completed, the master optical network terminal re-evaluates the status of the target slave optical network terminal or selects another slave optical network terminal as the new target slave optical network terminal and repeats the above pre-switching notification.

[0067] Specifically, the master optical network terminal sends a pre-switching notification to the target slave optical network terminal before sending the switching instruction, so that the target slave optical network terminal can carry out preparations related to mobile terminal access authentication in advance, such as loading identity authentication information and encryption algorithm modules, effectively shortening the authentication link in the switching process. If the target slave optical network terminal successfully completes the preparation within the preset time, the overall switching time is reduced, the service interruption time caused by the authentication process is reduced, and the network switching efficiency and service continuity are improved. If the preparation is not completed on time, the master optical network terminal re-evaluates or replaces the target slave optical network terminal and repeats the pre-switching notification process to avoid switching failures caused by failures of a single slave optical network terminal or insufficient resources.

[0068] As a specific implementation of a fast switching method based on FTTR networking, the method further includes:

[0069] The master optical network terminal obtains connection information of the mobile terminals connected thereto reported by each slave optical network terminal, wherein the connection information includes the MAC address, signal strength and location information of the mobile terminal;

[0070] Calculate the location coordinates of all mobile terminals in the current FTTR network based on the connection information;

[0071] Draw a circular area with each slave optical network terminal as the center and a preset radius as the radius, and count the number of mobile terminals in the area;

[0072] When the number of mobile terminals exceeds a preset threshold, it is determined that there are multiple mobile terminals moving in a nearby area in the current area, and the transmission power of the slave optical network terminal is adjusted according to the distribution of mobile terminals and signal interference conditions in the coverage area of ​​each slave optical network terminal.

[0073] Specifically, the master optical network terminal collects the connection information including the MAC address of the mobile terminal, signal strength and the location information of the slave optical network terminal reported by each slave optical network terminal, calculates the location coordinates of all mobile terminals based on this, and then demarcates the area with the slave optical network terminal as the center and the preset radius and counts the number of mobile terminals therein. When the number of mobile terminals in a certain area exceeds the threshold, it is determined to be a situation of multiple terminals moving in a similar area. The transmission power is adjusted according to the terminal distribution and signal interference conditions in the coverage area of ​​the slave optical network terminal, and the correlation characteristics of power, signal coverage and interference are used to dynamically balance the signal coverage range and interference level in the multi-terminal dense area, which can not only ensure that each mobile terminal obtains appropriate signal strength to maintain a stable connection, avoid communication interruption or rate reduction due to weak signal, but also effectively suppress the same-frequency interference caused by excessive power, reduce the increase in bit error rate and data retransmission caused by interference, thereby optimizing the spectrum resource utilization efficiency of the entire FTTR network in a complex environment with multiple terminals, and improving the overall network performance and service quality.

[0074] As one implementation method of a fast switching method based on FTTR networking, adjusting the transmission power of the slave optical network terminal according to the distribution of mobile terminals and signal interference conditions in the coverage area of ​​each slave optical network terminal includes:

[0075] Based on the real-time signal strength feedback between each slave optical network terminal and the mobile terminal and the signal interference measurement value between adjacent slave optical network terminals, a power adjustment model is constructed, and the power adjustment model calculates the first transmission power value of the slave optical network terminal in the current area based on the signal propagation loss and the multipath effect, and the first transmission power value is used to minimize interference and ensure signal coverage;

[0076] When it is detected that the user density in a certain area is too high and the interference is aggravated, the master optical network terminal starts the adaptive power adjustment mode, gradually reduces the transmission power of the slave optical network terminals in the area, and simultaneously monitors the signal reception quality of the mobile terminals until the balance threshold between interference and signal strength is reached.

[0077] Specifically, a power adjustment model is constructed based on the real-time signal strength feedback between each slave optical network terminal and the mobile terminal and the signal interference measurement value between adjacent slave optical network terminals. The model comprehensively considers the signal propagation loss and multipath effect to calculate the initial first transmission power value, so that at the beginning of network operation, the appropriate transmission power is set for each slave optical network terminal based on the combination of theoretical and actual measurement data, so as to achieve the goal of controlling the interference at a low level while ensuring the effective coverage of the signal for the mobile terminals in the area, and optimizing the overall signal quality and spectrum utilization efficiency of the network. When the user density in a certain area is too high and the interference is aggravated, the master optical network terminal starts the adaptive power adjustment mode, and gradually reduces the transmission power of the slave optical network terminal in the area according to the signal reception quality monitoring results until the interference and signal strength balance threshold is reached. It effectively reduces the spread of co-frequency interference caused by excessive transmission power, avoids negative impact on the network performance in the surrounding area, and ensures that the mobile terminals in the area can still maintain acceptable signal reception quality, ensures the stability and accuracy of data transmission, and maintains the robust operation of the network in a complex and changeable multi-user environment.

[0078] As one implementation of a fast switching method based on FTTR networking, the method further includes:

[0079] The main optical network terminal records the switching events of each mobile terminal and counts the number of switching times of each mobile terminal within a unit time;

[0080] When the number of handovers of a mobile terminal exceeds a set handover threshold, the mobile terminal is marked as a frequently handover terminal;

[0081] For the frequently switched terminals marked, the master optical network terminal obtains the signal strength, noise level, occupancy rate and interference source information of the channels where the slave optical network terminals covering the frequently switched terminals are located to filter out the optical network terminal list;

[0082] The master optical network terminal analyzes the load conditions of each slave optical network terminal and selects slave optical network terminals whose loads meet the requirements to form a candidate set of slave optical network terminals, wherein the load conditions include the number of currently connected mobile terminals and the data traffic load;

[0083] The master optical network terminal sends a scanning instruction to the frequently switched terminal, instructing the frequently switched terminal to scan the signal of the slave optical network terminal in the candidate set and feed back signal quality information, wherein the signal quality information includes a received signal strength indication and a bit error rate;

[0084] According to the signal quality information fed back by the mobile terminal, the master optical network terminal sorts the candidate slave optical network terminals based on signal strength, bit error rate and channel load, and selects the slave optical network terminal with the highest score;

[0085] The master optical network terminal sends a connection establishment instruction to the selected slave optical network terminal and the frequent switching terminal to establish a connection between the two.

[0086] Specifically, the master optical network terminal identifies frequently switched terminals by recording mobile terminal switching events and counting the number of switching times. Subsequently, the channel information and load conditions of the slave optical network terminals covering the frequently switched terminals are obtained, and a candidate set is selected based on this. The frequently switched terminals are instructed to scan the slave optical network terminal signals in the candidate set and feedback the quality information, and then the ones with the highest scores are selected through comprehensive sorting based on signal strength, bit error rate and channel load. This effectively reduces the possibility of frequently switched terminals switching again, and reduces the risk of service interruption and data loss caused by frequent switching.

[0087] As one implementation of a fast switching method based on FTTR networking, the method further includes:

[0088] Multiple transmission paths are constructed between the mobile terminal and the slave optical network terminal and between the slave optical network terminal and the master optical network terminal; wherein the multiple wireless transmission paths are constructed using wireless links of different frequency bands, wherein the same frequency band includes 2.4 GHz and 5 GHz frequency bands; multiple optical fiber transmission paths are constructed using the master optical network terminal and the slave optical network terminals connected with different optical fiber interfaces;

[0089] Assign a unique path identifier to each transmission path, and establish a path management module in the mobile terminal, the slave optical network terminal and the master optical network terminal, wherein the path management module is used for path identification, monitoring and switching control;

[0090] The path management module monitors the real-time status information of each transmission path at fixed time intervals, and classifies and stores the monitored path status information according to the path identifier;

[0091] Upload the path status information to the path status database of the main optical network terminal for summary analysis;

[0092] The main optical network terminal calculates the allocation weight of each path using a dynamic traffic allocation algorithm based on the data in the path state database, wherein the dynamic traffic allocation algorithm takes maximizing the overall transmission efficiency and minimizing the transmission delay as the objective function;

[0093] The main optical network terminal dynamically distributes the data traffic of the mobile terminal to each transmission path in units of data packets according to the calculated distribution weights, and distributes the data packets to different paths for transmission according to the weights of each path;

[0094] When the status monitoring module of a transmission path detects that the path is faulty or congested, it sends a path abnormality report to the main optical network terminal;

[0095] After receiving the report, the main optical network terminal reallocates the data traffic originally allocated to the current path to other available paths.

[0096] Specifically, multiple transmission paths formed by wireless links of different frequency bands and different optical fiber interface connections are constructed between the mobile terminal and the slave optical network terminal and the master optical network terminal, and are equipped with corresponding path management modules. The master optical network terminal uses a dynamic traffic allocation algorithm with the goal of maximizing overall transmission efficiency and minimizing transmission delay to calculate the path allocation weight, and then dynamically allocates data packets to each path for transmission according to the weight, realizing intelligent allocation of traffic based on the real-time status of each path, making full use of the bandwidth resources of each path, effectively improving the transmission bandwidth utilization and data transmission efficiency of the overall network, and avoiding the situation where some paths are idle and some paths are overloaded. When a path fails or is congested, the data traffic can be quickly switched to other available paths through timely feedback from the status monitoring module and the rapid reallocation mechanism of the master optical network terminal, reducing the data transmission interruption time caused by path problems, and providing users with a more reliable and efficient network service experience.

[0097] As one implementation of a fast switching method based on FTTR networking, the main optical network terminal is electrically connected to a temperature and humidity sensor; the temperature and humidity sensor is used to detect the temperature and humidity of the area where the FTTR network is located;

[0098] When determining the location information of the mobile terminal from the wireless signal strength monitoring data transmitted by the optical network terminal, the method further comprises:

[0099] The main optical network terminal obtains the environmental data collected by the temperature and humidity sensor;

[0100] The master optical network terminal corrects the estimated value of the distance between the mobile terminal and each slave optical network terminal obtained by converting the wireless signal strength data according to the influence of different environmental data on the wireless signal propagation.

[0101] Specifically, the main optical network terminal is electrically connected to the temperature and humidity sensor to detect the temperature and humidity of the area where the FTTR network is located. When determining the location information of the mobile terminal based on the wireless signal strength monitoring data transmitted from the optical network terminal, the environmental data is introduced to participate in the calculation. Since environmental factors such as temperature and humidity will have a substantial impact on the propagation characteristics of wireless signals, for example, signal attenuation may be aggravated in a high temperature and high humidity environment, while the signal propagation loss in a low temperature and dry environment is relatively small, by obtaining the data collected by the temperature and humidity sensor, the main optical network terminal can accurately correct the distance estimation value converted based on the wireless signal strength data according to the quantitative relationship between the environment and signal propagation, making up for the deviation caused by the failure to incorporate environmental factors when traditional positioning relies only on signal strength, thereby greatly improving the accuracy of the mobile terminal position determination, making the positioning result more in line with the actual situation, reducing a series of network performance problems caused by inaccurate positioning, and improving the user experience of using the network in different environments.

[0102] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A fast switching method based on FTTR networking, characterized in that: include: A master optical network terminal establishes a connection relationship with a plurality of slave optical network terminals to form an FTTR network, and the master optical network terminal is connected to an external network; Each slave optical network terminal monitors the wireless signal strength between the slave optical network terminal and the mobile terminal in real time, and transmits the monitored wireless signal strength monitoring data to the master optical network terminal according to a preset period; The master optical network terminal determines the location information of the mobile terminal according to the wireless signal strength monitoring data transmitted by each of the slave optical network terminals; When the position of the mobile terminal changes and meets the preset switching conditions, the master optical network terminal sends a switching instruction to the target slave optical network terminal, and the target slave optical network terminal is the slave optical network terminal with the strongest signal at the current position of the mobile terminal; wherein the preset switching conditions include at least one of the following: the wireless signal strength between the mobile terminal and the currently connected slave optical network terminal is lower than a preset threshold, the wireless signal strength between the mobile terminal and the target slave optical network terminal is higher than the wireless signal strength of the currently connected slave optical network terminal and the difference between the two is greater than a preset difference, and the position change of the mobile terminal exceeds a preset distance range within a preset time period; After receiving the switching instruction from the optical network terminal, the target performs access authentication with the mobile terminal, and after the access authentication is passed, a data transmission channel is established to complete the switching; The master optical network terminal determines the location information of the mobile terminal according to the wireless signal strength monitoring data transmitted by each of the slave optical network terminals, including: The optical network terminal receives the wireless signal strength data between the mobile terminal and each slave optical network terminal, and converts the wireless signal strength data into the estimated value of the distance between the mobile terminal and each slave optical network terminal according to a preset wireless signal propagation model; The master optical network terminal obtains the predetermined position information of each slave optical network terminal in the FTTR network; Taking the position of each slave optical network terminal as the center and taking the estimated distance between the mobile terminal and each slave optical network terminal as the radius, construct a plurality of circles; Solving the coordinates of the intersection of any three circles among the multiple circles, and using the coordinates of the intersection as the position coordinates of the mobile terminal; Before the main optical network terminal sends the switching instruction, the method further includes: The master optical network terminal sends a pre-switching notification to the target slave optical network terminal, and after receiving the pre-switching notification, the target slave optical network terminal performs preparation steps related to mobile terminal access authentication; the preparation steps include pre-loading identity authentication information and related encryption algorithm modules of the mobile terminal; If the target slave optical network terminal completes the preparation steps within the preset preparation time, the master optical network terminal formally sends a switching instruction; if not completed, the master optical network terminal re-evaluates the state of the target slave optical network terminal or selects another slave optical network terminal as a new target slave optical network terminal and repeats the above pre-switching notification; The method further comprises: The master optical network terminal obtains connection information of the mobile terminals connected thereto reported by each slave optical network terminal, wherein the connection information includes the MAC address, signal strength and location information of the mobile terminal; Calculate the location coordinates of all mobile terminals in the current FTTR network based on the connection information; Draw a circular area with each slave optical network terminal as the center and a preset radius as the radius, and count the number of mobile terminals in the area; When the number of mobile terminals exceeds a preset threshold, it is determined that there are multiple mobile terminals moving in a nearby area in the current area, and the transmission power of the slave optical network terminal is adjusted according to the distribution of mobile terminals and signal interference conditions in the coverage area of ​​each slave optical network terminal; According to the distribution of mobile terminals and signal interference conditions in the coverage area of ​​each slave optical network terminal, the transmission power of the slave optical network terminal is adjusted, including: Based on the real-time signal strength feedback between each slave optical network terminal and the mobile terminal and the signal interference measurement value between adjacent slave optical network terminals, a power adjustment model is constructed, and the power adjustment model calculates the first transmission power value of the slave optical network terminal in the current area based on the signal propagation loss and the multipath effect, and the first transmission power value is used to minimize interference and ensure signal coverage; When it is detected that the user density in a certain area is too high and the interference is aggravated, the master optical network terminal starts the adaptive power adjustment mode, gradually reduces the transmission power of the slave optical network terminals in the area, and simultaneously monitors the signal reception quality of the mobile terminals until the balance threshold between interference and signal strength is reached.

2. A fast switching method based on FTTR networking according to claim 1, characterized in that: The method further comprises: The main optical network terminal records the switching events of each mobile terminal and counts the number of switching times of each mobile terminal within a unit time; When the number of handovers of a mobile terminal exceeds a set handover threshold, the mobile terminal is marked as a frequently handover terminal; For the frequently switched terminals marked, the master optical network terminal obtains the signal strength, noise level, occupancy rate and interference source information of the channels where the slave optical network terminals covering the frequently switched terminals are located to filter out the optical network terminal list; The master optical network terminal analyzes the load conditions of each slave optical network terminal and selects slave optical network terminals whose loads meet the requirements to form a candidate set of slave optical network terminals, wherein the load conditions include the number of currently connected mobile terminals and the data traffic load; The master optical network terminal sends a scanning instruction to the frequently switched terminal, instructing the frequently switched terminal to scan the signal of the slave optical network terminal in the candidate set and feed back signal quality information, wherein the signal quality information includes a received signal strength indication and a bit error rate; According to the signal quality information fed back by the mobile terminal, the master optical network terminal sorts the candidate slave optical network terminals based on signal strength, bit error rate and channel load, and selects the slave optical network terminal with the highest score; The master optical network terminal sends a connection establishment instruction to the selected slave optical network terminal and the frequent switching terminal to establish a connection between the two.

3. A fast switching method based on FTTR networking according to claim 2, characterized in that: The method further comprises: Multiple transmission paths are constructed between the mobile terminal and the slave optical network terminal and between the slave optical network terminal and the master optical network terminal; wherein the multiple wireless transmission paths are constructed using wireless links of different frequency bands, wherein the same frequency band includes 2.4 GHz and 5 GHz frequency bands; multiple optical fiber transmission paths are constructed using the master optical network terminal and the slave optical network terminals connected with different optical fiber interfaces; Assign a unique path identifier to each transmission path, and establish a path management module in the mobile terminal, the slave optical network terminal and the master optical network terminal, wherein the path management module is used for path identification, monitoring and switching control; The path management module monitors the real-time status information of each transmission path at fixed time intervals, and classifies and stores the monitored path status information according to the path identifier; Upload the path status information to the path status database of the main optical network terminal for summary analysis; The main optical network terminal calculates the allocation weight of each path using a dynamic traffic allocation algorithm based on the data in the path state database, wherein the dynamic traffic allocation algorithm takes maximizing the overall transmission efficiency and minimizing the transmission delay as the objective function; The main optical network terminal dynamically distributes the data traffic of the mobile terminal to each transmission path in units of data packets according to the calculated distribution weights, and distributes the data packets to different paths for transmission according to the weights of each path; When the status monitoring module of a transmission path detects that the path is faulty or congested, it sends a path abnormality report to the main optical network terminal; After receiving the report, the main optical network terminal reallocates the data traffic originally allocated to the current path to other available paths.

4. A fast switching method based on FTTR networking according to claim 3, characterized in that: The main optical network terminal is electrically connected to a temperature and humidity sensor; the temperature and humidity sensor is used to detect the temperature and humidity of the area where the FTTR network is located; When determining the location information of the mobile terminal from the wireless signal strength monitoring data transmitted by the optical network terminal, the method further comprises: The main optical network terminal obtains the environmental data collected by the temperature and humidity sensor; The master optical network terminal corrects the estimated value of the distance between the mobile terminal and each slave optical network terminal obtained by converting the wireless signal strength data according to the influence of different environmental data on the wireless signal propagation.

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