Policy adjustment method and device, network equipment and medium

Abstract

The invention provides a policy adjustment method and device, network equipment and a medium, and is applied to the technical field of wireless. The method comprises the following steps: executing network strategy adjustment under the condition that a first condition is met; the network strategy adjustment comprises network resource configuration adjustment and / or terminal service adjustment; wherein the first condition comprises one or more of the following items: determining that a first cell corresponding to the first network equipment is about to enter a target network state; obtaining an early warning notification sent by the second network equipment; the second network device is a network device corresponding to an adjacent cell of the first cell. By adopting the method, under the condition that the first network equipment judges that the corresponding first cell is about to enter the target network state and / or obtains the early warning notification sent by the second network equipment corresponding to the adjacent cell, the network strategy adjustment is executed, so that the network strategy adjustment can be executed before the cell enters the target network state, and the network strategy adjustment is executed before the cell enters the target network state. And the problems of network performance reduction and unstable communication quality during meeting are avoided.

Description

Technical Field

[0001] The present invention relates to the field of wireless technology, and in particular to a policy adjustment method, device, network equipment and medium. Background Art

[0002] With the continued construction of high-speed rail lines, passenger traffic continues to increase, and the proportion of high-speed rail passengers using 5G continues to rise, the capacity issues of high-speed rail networks are becoming increasingly prominent. This is especially true in scenarios where two trains are passing each other, and passengers on both trains are simultaneously connected to the 5G network. This doubles the number of connected users in the cell, resulting in extremely high instantaneous capacity, further increasing network load, leading to network congestion and performance degradation, resulting in dropped calls, lags, and other issues.

[0003] Furthermore, because high-speed trains travel at high speeds, the relative speed of the two trains in passing scenarios is high, exacerbating multipath and Doppler effects in signal transmission. If two trains are traveling toward each other, users within the same cell will experience both positive and negative frequency deviations. This can lead to errors in the base station's pre-correction of user frequencies, resulting in signal attenuation, jitter, and frequency drift, impacting user demodulation performance, communication quality, and stability. Summary of the Invention

[0004] The technical solution of the present invention aims to provide a strategy adjustment method and device for solving the problems of network performance degradation and unstable communication quality in the high-speed rail network line in the oncoming train scenario.

[0005] One embodiment of the present invention provides a policy adjustment method, wherein the method is performed by a first network device, and the method includes:

[0006] When the first condition is met, performing network policy adjustment; the network policy adjustment includes network resource configuration adjustment and / or terminal service adjustment;

[0007] The first condition includes one or more of the following:

[0008] determining that a first cell corresponding to the first network device is about to enter a target network state;

[0009] Obtain an early warning notification sent by a second network device to remind entering the target network state; wherein the second network device is a network device corresponding to a neighboring cell of the first cell.

[0010] Optionally, the policy adjustment method further includes:

[0011] Determine whether the first cell is about to enter the target network state based on one or more of the following information:

[0012] first user status information of the first cell;

[0013] Second user status information of a second cell sent by a third network device; the second cell is a neighboring cell of the first cell;

[0014] Historical meeting information.

[0015] Optionally, in the policy adjustment method, the first user status information includes one or more of the following:

[0016] The number of users to which multiple sending and receiving devices are connected;

[0017] The variation of the number of users per unit time;

[0018] The total number of users in the cell;

[0019] The variation of the total number of users per unit time;

[0020] A variation pattern of user frequency deviation of the user connected to the transmitting and receiving device;

[0021] The switching pattern of users switching between multiple sending and receiving devices.

[0022] Optionally, in the policy adjustment method, the second user status information includes one or more of the following:

[0023] The speed of the moving train;

[0024] First indication information, used to indicate that the number of users in the cell is greater than a first threshold;

[0025] The total number of users in the cell;

[0026] The switching pattern of users switching between multiple sending and receiving devices.

[0027] Optionally, the policy adjustment method, wherein judging whether the first cell is about to enter a target network state according to the first user state information, includes:

[0028] When it is determined, based on the first user status information, that one of the following conditions is met, it is determined that the first cell is about to enter the target network state:

[0029] The number of users connected to the first transmitting / receiving device and the number of users connected to the second transmitting / receiving device in the first cell are both greater than a second threshold, and a frequency deviation change pattern of the users connected to the first transmitting / receiving device is the same as a frequency deviation change pattern of the users connected to the second transmitting / receiving device; wherein the first transmitting / receiving device and the second transmitting / receiving device are respectively located at two boundaries of the first cell;

[0030] The total number of users in the first cell is greater than a third threshold, the variation of the total number of users per unit time is greater than a fourth threshold, and the user frequency deviation variation patterns of multiple users connected to the third transmitting and receiving device in the first cell are the same.

[0031] Optionally, in the policy adjustment method, determining whether the first cell is about to enter a target network state according to the second user state information includes one or more of the following:

[0032] The total number of users in the first cell and the total number of users in the second cell are both greater than a fifth threshold, and a switching rule for users in the first cell switching between multiple transmitting and receiving devices is the same as a switching rule for users in the second cell switching between multiple transmitting and receiving devices;

[0033] The total number of users in the first cell is less than the fifth threshold, but the total number of users in at least two second cells adjacent to the first cell is respectively greater than the fifth threshold, and a switching rule for users in one of the second cells to switch between multiple transmitting and receiving devices is opposite to a switching rule for users in another second cell to switch between multiple transmitting and receiving devices.

[0034] Optionally, the policy adjustment method further includes:

[0035] When it is determined that the first cell corresponding to the first network device is about to enter the target network state, an early warning notification is sent to the second network device.

[0036] Optionally, the policy adjustment method further includes:

[0037] Send second user status information of the first cell to the second network device.

[0038] Optionally, in the policy adjustment method, the warning notification includes one or more of the following information:

[0039] a cell identifier of a cell receiving the early warning notification;

[0040] The cell identifier of the cell from which the early warning notification is sent;

[0041] The second indication information is used to indicate entering the warning state;

[0042] Resource occupancy information when the train passes through each transmitting and receiving device.

[0043] Optionally, in the policy adjustment method, when the network policy adjustment includes adjusting network resource configuration, performing the network policy adjustment includes one or more of the following:

[0044] Implement access assurance strategies;

[0045] Implementing minimum demand protection strategy;

[0046] Implement differentiated demand assurance strategies;

[0047] Perform a network posture assessment.

[0048] Optionally, in the policy adjustment method, the network policy adjustment includes terminal service adjustment, and the performing of the network policy adjustment includes:

[0049] A service adjustment notification message is sent to the terminal to notify the terminal to restrict the sending of request messages other than voice and data service packet requests.

[0050] Optionally, the policy adjustment method further includes:

[0051] Determining a strategy for executing the network resource configuration adjustment according to a quantity level corresponding to the number of users in the target network state and a state level corresponding to the network utilization rate;

[0052] Therein, a plurality of combinations of different levels of the number of users and different levels of the network utilization have a predetermined corresponding relationship with different strategies for adjusting the network resource configuration.

[0053] Optionally, the policy adjustment method further includes:

[0054] If the second condition is met, exit the network policy adjustment; wherein the second condition includes one or more of the following:

[0055] The oncoming train is detected to leave the first cell;

[0056] Determine whether the predetermined predicted duration of the meeting has arrived.

[0057] One embodiment of the present invention further provides a policy adjustment device, which is applied to a first network device and includes:

[0058] A first policy execution module is configured to execute a network policy adjustment when a first condition is met; the network policy adjustment includes a network resource configuration adjustment and / or a terminal service adjustment;

[0059] The first condition includes one or more of the following:

[0060] determining that a first cell corresponding to the first network device is about to enter a target network state;

[0061] Obtain an early warning notification sent by a second network device to remind entering the target network state; wherein the second network device is a network device corresponding to a neighboring cell of the first cell.

[0062] One embodiment of the present invention further provides a network device, which includes a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the policy adjustment method as described in any one of the above items.

[0063] One embodiment of the present invention further provides a readable storage medium, wherein the readable storage medium stores a program, and when the program is executed by a processor, the steps in any of the above-mentioned policy adjustment methods are implemented.

[0064] One embodiment of the present invention further provides a computer program product, which includes computer instructions, and when the computer instructions are executed by a processor, the steps in any of the above-mentioned policy adjustment methods are implemented.

[0065] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0066] By adopting the policy adjustment method described in the embodiment of the present invention, when the first network device determines that the corresponding first cell is about to enter the target network state, and / or obtains the early warning notification sent by the second network device corresponding to the adjacent cell to remind the user to enter the target network state, the network policy adjustment is performed, so that the network policy adjustment can be performed before the cell enters the target network state, thereby avoiding the problems of network performance degradation and unstable communication quality in the oncoming vehicle scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 A schematic diagram of a process for adjusting a policy according to an embodiment of the present invention;

[0068] Figure 2 A flowchart of a specific implementation method of the strategy adjustment method according to an embodiment of the present invention;

[0069] Figure 3 This is a schematic diagram of the structure of the strategy adjustment device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0070] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0071] To reduce frequent user handoffs within high-speed trains, current private network cells utilize a cell-merging solution, combining 6-12 Remote Radio Units (RRUs) into a single cell. The average inter-RRU spacing in high-speed rail networks is approximately 500 meters, and the coverage range of a single private network cell is approximately 3-6 km. In a train-meeting scenario, passengers on both trains simultaneously connect to the 5G network, doubling the number of connected users within the cell. This further increases network load, leading to network congestion and performance degradation, and user experience of dropped calls and lag. Furthermore, at high speeds, the relative speed of the two trains when meeting is high, exacerbating multipath and Doppler effects in signal transmission. If two trains travel toward each other, users within the same cell will experience both positive and negative frequency deviations. This can cause errors in the base station's pre-correction of user signals, resulting in signal attenuation, jitter, and frequency drift, impacting user demodulation performance, communication quality, and stability.

[0072] To solve the above technical problems, an embodiment of the present invention provides a policy adjustment method, which performs network policy adjustment when a first network device determines that the corresponding first cell is about to enter a target network state, and / or obtains a warning notification sent by a second network device corresponding to an adjacent cell to remind it to enter the target network state, so as to be able to perform network policy adjustment before the cell enters the target network state, thereby avoiding the problems of network performance degradation and unstable communication quality in oncoming traffic scenarios.

[0073] One embodiment of the present invention provides a policy adjustment method, which is executed by a first network device, such as Figure 1 As shown, the method includes:

[0074] S110, when the first condition is met, performing network policy adjustment; the network policy adjustment includes network resource configuration adjustment and / or terminal service adjustment;

[0075] The first condition includes one or more of the following:

[0076] determining that a first cell corresponding to the first network device is about to enter a target network state;

[0077] Obtain an early warning notification sent by a second network device to remind entering the target network state; wherein the second network device is a network device corresponding to a neighboring cell of the first cell.

[0078] It should be noted that in the embodiments of the present invention, the target network state mentioned is a network state with a short-term surge in user volume. The target network state can also be described as a meeting state, but is not limited to a meeting state. The meeting state includes the meeting of two trains traveling in the same direction and the meeting of two trains traveling in opposite directions.

[0079] The strategy adjustment method described in the embodiment of the present invention can be optionally applied to a high-speed rail network, where each cell (which can be called a private network cell) is typically a cell merged with 6-12 remote radio units (RRU) / transmission and receiving points (TRP) cells.

[0080] In addition, optionally, in the network line of the high-speed rail network, each cell numbers each RRU / TRP according to the topological relationship, and each cell follows the same numbering rule. For example, along one direction of the network line, the RRU / TRP in each cell are numbered in order from small to large. Of course, the numbering rule is not limited to this, but the numbering rule followed by each cell is the same.

[0081] In this implementation, optionally, the early warning notification sent by the second network device obtained by the first network device is sent to the first network device by the second network device when it is determined that the adjacent cell of the first cell is about to enter the target network state. That is, using this implementation, the first network device can obtain a vehicle oncoming warning in the neighboring cell, and determine that the corresponding first cell is about to enter the target network state based on the vehicle oncoming warning in the neighboring cell, so as to perform network policy adjustment before the cell enters the target network state.

[0082] For example, for two trains traveling in the same direction, due to the high speed of the trains, the second network device can determine that the trains are entering the first cell from the second cell in the target network state, or the second network device can determine that the two trains enter the target network state after entering the adjacent cell (the first cell). In this case, the second network device can send an early warning notification to the first network device to notify the first network device to perform network policy adjustments before the two trains enter the target network state.

[0083] In another embodiment, the first network device itself can predict the target network state in the corresponding first cell, and when it is determined that the first cell is about to enter the target network state, perform network policy adjustment to avoid network performance degradation and unstable communication quality in the oncoming vehicle scenario.

[0084] In addition, by adopting the policy adjustment method described in the embodiment of the present invention, the first network device can perform network policy adjustment before the first cell is about to enter the target network state, which can avoid the problems of instantaneous signaling storms, untimely adjustments and aggravated network congestion caused by the high train speed and short transit time, and the network policy adjustment within a short time after entering the target network state.

[0085] In one embodiment of the present invention, optionally, the method further includes:

[0086] Determine whether the first cell is about to enter the target network state based on one or more of the following information:

[0087] first user status information of the first cell;

[0088] Second user status information of a second cell sent by a third network device; the second cell is a neighboring cell of the first cell;

[0089] Historical meeting information.

[0090] In one embodiment of this embodiment, optionally, the first network device may determine a vehicle meeting scenario in the cell based on real-time first user status information in the cell.

[0091] In one embodiment, optionally, the first user status information includes one or more of the following:

[0092] The number of users to which multiple sending and receiving devices are connected;

[0093] The variation of the number of users per unit time;

[0094] The total number of users in the cell;

[0095] The variation of the total number of users per unit time;

[0096] A variation pattern of user frequency deviation of the user connected to the transmitting and receiving device;

[0097] The switching pattern of users switching between multiple sending and receiving devices.

[0098] Optionally, the sending and receiving device is a transmission point used for sending and receiving within a cell. In one embodiment, the sending and receiving device can also be called a TRP.

[0099] Optionally, determining, according to the first user status information, whether the first cell is about to enter a target network state includes:

[0100] When it is determined, based on the first user status information, that one of the following conditions is met, it is determined that the first cell is about to enter the target network state:

[0101] The number of users connected to the first transmitting / receiving device and the number of users connected to the second transmitting / receiving device in the first cell are both greater than a second threshold, and a frequency deviation change pattern of the users connected to the first transmitting / receiving device is the same as a frequency deviation change pattern of the users connected to the second transmitting / receiving device; wherein the first transmitting / receiving device and the second transmitting / receiving device are respectively located at two boundaries of the first cell;

[0102] The total number of users in the first cell is greater than a third threshold, the variation of the total number of users per unit time is greater than a fourth threshold, and the user frequency deviation variation patterns of multiple users connected to the third transmitting and receiving device in the first cell are the same.

[0103] Specifically, for the case where two trains traveling in opposite directions meet in the same cell (first cell), if the first transmitting and receiving device and the second transmitting and receiving device in the same cell (first cell) simultaneously meet the following conditions, it is determined to be a meeting:

[0104] 1) The number of users connected to the first transmitting and receiving device and the number of users connected to the second transmitting and receiving device in the first cell are both greater than a second threshold;

[0105] 2) The user frequency deviation change pattern of the user connected to the first transmitting and receiving device is the same as the user frequency deviation change pattern of the user connected to the second transmitting and receiving device.

[0106] The user frequency deviation variation rule is that the user frequency deviations of the user connected to the first transmitting and receiving device and the user connected to the second transmitting and receiving device satisfy the following conditions: the positive frequency deviation gradually decreases and the negative frequency deviation gradually increases.

[0107] In addition, optionally, for a scenario where two trains traveling in opposite directions meet in the same cell (first cell), in addition to meeting the above conditions, the following conditions may also be met:

[0108] A user is connected to the fourth transceiver device adjacent to the first transceiver device or the second transceiver device in the first cell, and the positive frequency deviation of the user gradually decreases.

[0109] The first transceiver device and the second transceiver device are transceiver devices located at the boundary of the first cell respectively, and the fourth transceiver device is a transceiver device adjacent to the first transceiver device or the second transceiver device.

[0110] It should be noted that the number of the first sending and receiving device, the second sending and receiving device, and the fourth sending and receiving device can be one or more respectively.

[0111] When two trains traveling in the same direction meet in the same zone (first zone), they are considered to be meeting if the following conditions are met:

[0112] 1) The total number of users in the first cell is greater than a third threshold, and a variation in the total number of users per unit time is greater than a fourth threshold;

[0113] 2) The user frequency deviation variation patterns of multiple users connected to the third transmitting and receiving device in the first cell are the same.

[0114] The variation range of the total number of users within a unit time can be defined as: the variation value of the total number of users within a unit time.

[0115] The user frequency deviation variation patterns of the multiple users connected to the third transmitting and receiving device may be the same: the positive frequency deviation gradually decreases, and the negative frequency deviation gradually increases.

[0116] Optionally, for a scenario where two trains traveling in the same direction meet in the same cell (first cell), in addition to the above conditions, the following conditions may also be met:

[0117] While the frequency deviation change patterns of multiple users connected to the third transmitting and receiving device in the first cell are the same, the frequency deviation change speeds of the third transmitting and receiving device are inconsistent.

[0118] Optionally, the third sending and receiving device includes any one or more sending and receiving devices in the first cell.

[0119] Another implementation of the strategy adjustment method described in the embodiment of the present invention can determine the meeting situation of adjacent cells based on real-time information between cells.

[0120] Specifically, network equipment (cells) can calculate the train speed and entry information through information such as high-speed user frequency deviation and historical cell ID. Based on the calculated train speed and entry information, the dedicated network cells along the high-speed railway line conduct relevant data collection, analysis and judgment based on the meeting judgment principle, and at the same time collect information from adjacent cells (second user status information) as a common analysis basis to determine whether to enter the target network state.

[0121] Combine Figure 2 As shown, the first network device (current base station) and the third network device (target base station) collect cell user status information, and the first network device and the third network device exchange cell user status information, and further judge the target network status based on the exchanged user status information (second user status information).

[0122] It should be noted that in the embodiments of the present invention, the first network device and the third network device mentioned are respectively represented as two adjacent network devices, and do not specifically refer to two network devices. The third network device may include any network device or multiple network devices adjacent to the first network device. In one embodiment, the third network device and the second network device mentioned in the embodiments of the present invention may optionally be the same network device.

[0123] In one embodiment, optionally, the cell user status information (second user status information) exchanged between the first network device and the third network device may include one or more of the following information:

[0124] The speed of the moving train;

[0125] First indication information, used to indicate that the number of users in the cell is greater than a first threshold;

[0126] The total number of users in the cell;

[0127] The switching pattern of users switching between multiple sending and receiving devices.

[0128] Optionally, the second user status information is transmitted between the first network device and the third network device via an IE message, and the IE message may further include a message type, a target cell ID of a target cell receiving the second user status information, and a cell ID of a current cell transmitting the second user status information.

[0129] Specifically, the second user status information transmitted between the first network device and the third network device may be as shown in the following table:

[0130]

[0131] In the embodiment of the present invention, optionally, judging, according to the second user status information, whether the first cell is about to enter the target network state includes one or more of the following:

[0132] The total number of users in the first cell and the total number of users in the second cell are both greater than a fifth threshold, and a switching rule for users in the first cell switching between multiple transmitting and receiving devices is the same as a switching rule for users in the second cell switching between multiple transmitting and receiving devices;

[0133] The total number of users in the first cell is less than the fifth threshold, but the total number of users in at least two second cells adjacent to the first cell is respectively greater than the fifth threshold, and a switching rule for users in one of the second cells to switch between multiple transmitting and receiving devices is opposite to a switching rule for users in another second cell to switch between multiple transmitting and receiving devices.

[0134] Specifically, in one embodiment, when the total number of users in a first cell (this cell) exceeds the fifth threshold value and the total number of users in an adjacent second cell also exceeds the fifth threshold value, it is determined whether the switching rules of users in the two cells switching between multiple transmitting and receiving devices are the same. If the switching rules are the same, it is determined that two trains are about to meet, and an early warning notification is sent to the neighboring cell; that is, in this case, it can be determined that two trains traveling in opposite directions are about to meet in the same cell.

[0135] In another embodiment, when the total number of users in the first cell (this cell) does not exceed the fifth threshold, but the total number of users in at least two adjacent cells exceeds the fifth threshold, the switching rules of users switching between multiple sending and receiving devices in the at least two adjacent cells are judged. If the switching rules are opposite, it is judged that a train is about to meet, and an early warning notification is sent to the neighboring cell; that is, in this case, it can be judged that two trains traveling in the same direction are about to meet in the same cell.

[0136] By adopting the policy adjustment method described in this embodiment, the target network status is judged by utilizing the interaction of user status information between adjacent cells. Compared with judging the target network status based on user status information within the cell, the target network status can be predicted earlier to ensure that network policy adjustment can be performed before the cell enters the target network state, thereby avoiding network performance degradation and unstable communication quality in oncoming vehicle scenarios.

[0137] For example, using this implementation, the current line cells all follow the Transmitting and Receiving Equipment (TRP) topology structure sorting rule, and the TRP sorting is 1-N.

[0138] Suppose a 16-carriage train passes through TRP1 of Cell1 and switches to TRP2. Cell1 transmits information such as the train's speed, switching pattern, and user threshold exceeded to adjacent Cell2 via its Xn port. Another 16-carriage train passes through TRP12 of Cell3 and switches to TRP11. Cell3 transmits information such as the train's speed, switching pattern, and user threshold exceeded to adjacent Cell12 via its Xn port.

[0139] Cell2 receives information from both Cell1 and Cell3 and determines that the user count threshold is currently within its own cell, but both neighboring Cell1 and Cell3 exceed it. It also determines the handover pattern is: Cell1 switches from a lower number to a higher number, while Cell3 switches from a higher number to a lower number, with the reverse pattern. Based on this comprehensive assessment, it determines that two trains are about to meet within its own cell, and immediately issues a warning notification to neighboring cells.

[0140] In another embodiment of the present invention, optionally, the method further includes:

[0141] When it is determined that the first cell corresponding to the first network device is about to enter the target network state, an early warning notification is sent to the second network device.

[0142] Optionally, the oncoming vehicle warning notification includes one or more of the following information:

[0143] a cell identifier of a cell receiving the early warning notification;

[0144] The cell identifier of the cell from which the early warning notification is sent;

[0145] The second indication information is used to indicate entering the oncoming vehicle warning state;

[0146] Resource occupancy information when the train passes through each TRP.

[0147] Specifically, as shown in the following table, the warning notifications sent between adjacent network devices include the following IE messages:

[0148]

[0149] In the embodiment of the present invention, according to Figure 2 As shown, in addition to being able to obtain the user status information (second user status information) of the cell sent by the network device (second network device) of the adjacent cell, the current network device (first network device) can also send the user status information (second user status information) of the current cell (first cell) to the network device of the adjacent cell.

[0150] Additionally, optionally, in combination Figure 2 As shown, the user status information of the cell and the above-mentioned warning notification can be transmitted between network devices through the Xn interface.

[0151] In another implementation manner in the embodiment of the present invention, optionally, the first network device may further determine whether the first cell is about to enter the target network state based on historical vehicle meeting information.

[0152] Specifically, the first network device obtains historical meeting information on the train line within a period of time, confirms the ID of the cell with a high incidence of meeting on the current line, and sets the meeting time for the cell with a high incidence of meeting according to the train timetable, and determines whether the corresponding first cell is about to enter the target network state, so that the network policy adjustment before the meeting can be started according to the meeting time setting, and an early warning notification can be sent.

[0153] It should be noted that, in the embodiment of the present invention, the above-mentioned multiple methods for determining whether the first cell is about to enter the target network state may be determined by using only one method or by combining multiple methods.

[0154] When the network policy adjustment includes adjusting the network resource configuration, the performing of the network policy adjustment includes one or more of the following:

[0155] Implement access assurance strategies;

[0156] Implementing minimum demand protection strategy;

[0157] Implement differentiated demand assurance strategies;

[0158] Perform a network posture assessment.

[0159] Optionally, the method further includes:

[0160] Determining a strategy for executing the network resource configuration adjustment according to a quantity level corresponding to the number of users in the target network state and a state level corresponding to the network utilization rate;

[0161] Therein, a plurality of combinations of different levels of the number of users and different levels of the network utilization have a predetermined corresponding relationship with different strategies for adjusting the network resource configuration.

[0162] By adopting this implementation mode, parameter thresholds for the number of users and network utilization can be set according to multiple levels based on their impact on the tightness of network resources. Different levels of user numbers correspond to different user number thresholds. Similarly, different levels of network utilization correspond to different utilization thresholds. Among them, based on the total number of users in the cell in the second user status information transmitted between adjacent network devices, the number of users when trains meet can be calculated and determined. By comparing the determined number of users with the user number thresholds of different levels, the number level corresponding to the number of users when trains meet can be determined.

[0163] For example, according to several scenarios of train meeting, including two trains of 8 carriages meeting, 8 carriages and 16 carriages meeting, and two trains of 16 carriages meeting, the number of users corresponding to the number of users can be divided into three levels: L1, L2, and L3, among which L1 represents the highest level, L2 represents a higher level, and L3 represents a normal level.

[0164] In addition, based on the resource occupancy information of the train when passing each sending and receiving device in the early warning notification transmitted between adjacent network devices, the network utilization in the target network state can be determined. By comparing the determined network utilization with the utilization thresholds corresponding to different levels, the different state levels corresponding to the network utilization when meeting can be determined.

[0165] On this basis, by presetting the number of users to different levels and the network utilization to different status levels for multiple combinations, the corresponding strategies for adjusting the network resource configuration can be determined to determine the strategies for adjusting the network resource configuration that need to be executed.

[0166] For example, when the number of users is divided into three levels, L1, L2, and L3, and the different status levels corresponding to network utilization are divided into three levels, L1, L2, and L3, where L1 represents the highest level, L2 represents a relatively high level, and L3 represents a normal level, the determined network resource configuration adjustment strategies are as follows: Case 1: The number of users is L1 and the network utilization is L1, indicating that the number of connected users is extremely large and network resources are extremely scarce. The network side performs access protection to ensure that most users do not lose connection;

[0167] Case 2: The number of users is L1, but the network utilization is L2 / L3. This indicates that there are a large number of connected users and network resource utilization is high or normal. The network needs to ensure access and minimum demand, and notify the terminal to adjust its policy.

[0168] Case 3: The number of users is L2 but the network utilization is L1. This indicates that there are many connected users but network resources are extremely scarce. The network needs to ensure the minimum demand and notify the terminal to adjust the policy.

[0169] Case 4: The number of users is L2 and the network utilization is L2 / L3. This indicates that there are many connected users and network resource utilization is high or normal. The network needs to provide differentiated guarantees for high-priority services and latency-sensitive services.

[0170] Case 5: The number of users is L3 but the network utilization is L1. This indicates that the number of connected users is normal but the network resource utilization is high. The network needs to provide differentiated guarantees for high-priority services and latency-sensitive services.

[0171] Case 6: The number of users is L3 and the network utilization is L2 / L3. This indicates that the number of connected users is normal and network resource utilization is high or normal. No special protection strategy is required, but real-time network status assessment and adjustment are required.

[0172] It should be noted that the above-mentioned strategies for adjusting the corresponding network resource configurations for different levels of user numbers and different levels of network utilization are merely examples and are not limited thereto. Specific examples for each implementation method will not be given separately here.

[0173] In the embodiment of the present invention, optionally, the network policy adjustment includes terminal service adjustment, and the performing of the network policy adjustment includes:

[0174] A service adjustment notification message is sent to the terminal to notify the terminal to restrict the sending of request messages other than voice and data service packet requests.

[0175] Optionally, using this embodiment, when the network policy adjustment performed based on the number of users and the level of network utilization includes executing a minimum requirement guarantee policy, the first network device notifies the terminal of the current network situation and requires the terminal to only send voice and data service packet requests, that is, restricts the terminal from sending request messages other than voice and data service packet requests.

[0176] In one embodiment, optionally, the first network device may send the service adjustment notification message to the terminal through DCI signaling in PDCCH, such as the service adjustment notification message is defined as format DCI2_8 in DCI, which is used to indicate the requirements of the high-capacity scenario for the terminal service request; in another embodiment, optionally, the first network device may send the service adjustment notification message through a MAC layer control unit, and optionally, the service adjustment notification message may be defined as a high-capacity service request MAC CE.

[0177] It should be noted that the above-mentioned manner in which the first network device sends the service adjustment notification message is only an example and is not limited thereto.

[0178] In one embodiment of the present invention, optionally, the method further includes:

[0179] If the second condition is met, exit the network policy adjustment; wherein the second condition includes one or more of the following:

[0180] The oncoming train is detected to leave the first cell;

[0181] Determine whether the predetermined predicted duration of the meeting has arrived.

[0182] With this implementation, when the meeting is over, the network device needs to roll back the adopted network configuration adjustment.

[0183] In one embodiment, when a first network device detects that a train has left the current cell, it exits the network policy adjustment and sends a policy fallback message to an adjacent second network device. Optionally, the policy fallback message includes IEs as shown in the following table:

[0184]

[0185] In another embodiment, the network device (including the first network device and / or the second network device) may determine a predicted duration of the oncoming vehicle, and exit the execution of the network policy adjustment when monitoring that the predicted duration of the oncoming vehicle has been reached.

[0186] Optionally, the network device can determine the predicted duration of the meeting based on the received meeting warning time, station spacing and train approaching speed, and then determine the execution time for exiting the network policy adjustment. In this way, when it is monitored that the execution time has arrived, the network policy adjustment is exited.

[0187] Alternatively, the train's dwell time T in each TRP can be determined according to the following formula:

[0188] T = L / v + δ;

[0189] Where L is the station spacing between cell TRPs, v is the train entry speed, and δ is the preset adjustment amount.

[0190] On this basis, based on the residence time T within each TRP, the train's residence time in the cell can be estimated (number of TRPs * T). When one of the two trains leaves the cell (taking the minimum estimated time), that is, the predicted duration of the meeting is obtained, the network and terminal policies can be rolled back and scheduled according to the normal network policy without the need to continue to implement network policy adjustments.

[0191] By adopting the policy adjustment method described in the embodiment of the present invention, the policy configuration on the network side and the terminal side is adjusted after early judgment of the oncoming vehicle situation and evaluation of network resource usage, thereby solving the problem of large-scale user disconnection and poor network experience in oncoming vehicle scenarios.

[0192] One embodiment of the present invention further provides a policy adjustment device, which is applied to a first network device, such as Figure 3 As shown, the device includes:

[0193] A first policy execution module 310 is configured to execute a network policy adjustment when a first condition is met; the network policy adjustment includes a network resource configuration adjustment and / or a terminal service adjustment;

[0194] The first condition includes one or more of the following:

[0195] determining that a first cell corresponding to the first network device is about to enter a target network state;

[0196] Obtain an early warning notification sent by a second network device to remind entering the target network state; wherein the second network device is a network device corresponding to a neighboring cell of the first cell.

[0197] Optionally, the policy adjustment device further comprises:

[0198] The determination module 320 is configured to determine whether the first cell is about to enter the target network state based on one or more of the following information:

[0199] first user status information of the first cell;

[0200] Second user status information of a second cell sent by a third network device; the second cell is a neighboring cell of the first cell;

[0201] Historical meeting information.

[0202] Optionally, in the policy adjustment device, the first user status information includes one or more of the following:

[0203] The number of users to which multiple sending and receiving devices are connected;

[0204] The variation of the number of users per unit time;

[0205] The total number of users in the cell;

[0206] The variation of the total number of users per unit time;

[0207] A variation pattern of user frequency deviation of the user connected to the transmitting and receiving device;

[0208] The switching pattern of users switching between multiple sending and receiving devices.

[0209] Optionally, in the policy adjustment device, the second user status information includes one or more of the following:

[0210] The speed of the moving train;

[0211] First indication information, used to indicate that the number of users in the cell is greater than a first threshold;

[0212] The total number of users in the cell;

[0213] The switching pattern of users switching between multiple sending and receiving devices.

[0214] Optionally, in the policy adjustment device, the determining module 320 determines whether the first cell is about to enter a target network state according to the first user state information, including:

[0215] When it is determined, based on the first user status information, that one of the following conditions is met, it is determined that the first cell is about to enter the target network state:

[0216] The number of users connected to the first transmitting / receiving device and the number of users connected to the second transmitting / receiving device in the first cell are both greater than a second threshold, and a frequency deviation change pattern of the users connected to the first transmitting / receiving device is the same as a frequency deviation change pattern of the users connected to the second transmitting / receiving device; wherein the first transmitting / receiving device and the second transmitting / receiving device are respectively located at two boundaries of the first cell;

[0217] The total number of users in the first cell is greater than a third threshold, the variation of the total number of users per unit time is greater than a fourth threshold, and the user frequency deviation variation patterns of multiple users connected to the third transmitting and receiving device in the first cell are the same.

[0218] Optionally, in the policy adjustment device, the determining module 320 determines whether the first cell is about to enter the target network state based on the second user state information, including one or more of the following:

[0219] The total number of users in the first cell and the total number of users in the second cell are both greater than a fifth threshold, and a switching rule for users in the first cell switching between multiple transmitting and receiving devices is the same as a switching rule for users in the second cell switching between multiple transmitting and receiving devices;

[0220] The total number of users in the first cell is less than the fifth threshold, but the total number of users in at least two second cells adjacent to the first cell is respectively greater than the fifth threshold, and a switching rule for users in one of the second cells to switch between multiple transmitting and receiving devices is opposite to a switching rule for users in another second cell to switch between multiple transmitting and receiving devices.

[0221] Optionally, the policy adjustment device further comprises:

[0222] The first sending module 330 is configured to send an early warning notification to the second network device when it is determined that the first cell corresponding to the first network device is about to enter a target network state.

[0223] Optionally, the policy adjustment device further comprises:

[0224] The second sending module 340 is configured to send the second user status information of the first cell to the second network device.

[0225] Optionally, in the policy adjustment device, the warning notification includes one or more of the following information:

[0226] a cell identifier of a cell receiving the early warning notification;

[0227] The cell identifier of the cell from which the early warning notification is sent;

[0228] The second indication information is used to indicate entering the oncoming vehicle warning state;

[0229] Resource occupancy information when the train passes through each transmitting and receiving device.

[0230] Optionally, in the policy adjustment device, when the network policy adjustment includes adjusting network resource configuration, the first policy execution module 310 performs the network policy adjustment, including one or more of the following:

[0231] Implement access assurance strategies;

[0232] Implementing minimum demand protection strategy;

[0233] Implement differentiated demand assurance strategies;

[0234] Perform a network posture assessment.

[0235] Optionally, in the policy adjustment device, the network policy adjustment includes terminal service adjustment, and the first policy execution module 310 executes the network policy adjustment, including:

[0236] A service adjustment notification message is sent to the terminal to notify the terminal to restrict the sending of request messages other than voice and data service packet requests.

[0237] Optionally, in the policy adjustment device, the first policy execution module 310 is further configured to:

[0238] Determining a strategy for executing the network resource configuration adjustment according to a quantity level corresponding to the number of users in the target network state and a state level corresponding to the network utilization rate;

[0239] Therein, a plurality of combinations of different levels of the number of users and different levels of the network utilization have a predetermined corresponding relationship with different strategies for adjusting the network resource configuration.

[0240] Optionally, in the policy adjustment device, the first policy execution module 310 is further configured to:

[0241] If the second condition is met, exit the network policy adjustment; wherein the second condition includes one or more of the following:

[0242] The oncoming train is detected to leave the first cell;

[0243] Determine whether the predetermined predicted duration of the meeting has arrived.

[0244] One embodiment of the present invention further provides a network device, which includes a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the policy adjustment method as described in any one of the above items.

[0245] The specific implementation method of executing the policy adjustment method by the program running on the processor of the network device can refer to the detailed description of the policy adjustment method when it is applied to the first network device, and will not be repeated here.

[0246] In addition, a specific embodiment of the present invention further provides a readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps in any of the above-mentioned policy adjustment methods.

[0247] Specifically, the readable storage medium is applied to the first network device mentioned above. When applied to the first network device, the execution steps in the corresponding policy adjustment method are as described in detail above and will not be repeated here.

[0248] One embodiment of the present invention further provides a computer program product, which includes computer instructions, and when the computer instructions are executed by a processor, the steps in any one of the above policy adjustment methods are implemented.

[0249] Optionally, the embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0250] The computer program product described in the embodiment of the present invention includes computer instructions that implement the various processes of the method embodiment shown above when executed by a processor, and can achieve the same technical effect. To avoid repetition, they are not described here.

[0251] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection of some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0252] In addition, the functional units in various embodiments of the present invention may be integrated into a single processing unit, each unit may be physically included separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or hardware plus software functional units.

[0253] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to perform some of the steps of the sending and receiving methods described in various embodiments of the present invention. The aforementioned storage medium includes: a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, and other media that can store program code.

[0254] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A strategy adjustment method, characterized in that: Executed by a first network device, the method includes: When the first condition is met, performing network policy adjustment; the network policy adjustment includes network resource configuration adjustment and / or terminal service adjustment; The first condition includes one or more of the following: determining that a first cell corresponding to the first network device is about to enter a target network state; Obtain an early warning notification sent by a second network device to remind entering the target network state; wherein the second network device is a network device corresponding to a neighboring cell of the first cell.

2. The strategy adjustment method according to claim 1, characterized in that: The method further comprises: Determine whether the first cell is about to enter the target network state based on one or more of the following information: first user status information of the first cell; Second user status information of a second cell sent by a third network device; the second cell is a neighboring cell of the first cell; Historical meeting information.

3. The strategy adjustment method according to claim 2, characterized in that: The first user status information includes one or more of the following: The number of users to which multiple sending and receiving devices are connected; The variation of the number of users per unit time; The total number of users in the cell; The variation of the total number of users per unit time; A variation pattern of user frequency deviation of the user connected to the transmitting and receiving device; The switching pattern of users switching between multiple sending and receiving devices.

4. The strategy adjustment method according to claim 2, characterized in that: The second user status information includes one or more of the following: The speed of the moving train; First indication information, used to indicate that the number of users in the cell is greater than a first threshold; The total number of users in the cell; The switching pattern of users switching between multiple sending and receiving devices.

5. The strategy adjustment method according to claim 2 or 3, characterized in that: Determining, according to the first user status information, whether the first cell is about to enter a target network state includes: When it is determined, based on the first user status information, that one of the following conditions is met, it is determined that the first cell is about to enter the target network state: The number of users connected to the first transmitting / receiving device and the number of users connected to the second transmitting / receiving device in the first cell are both greater than a second threshold, and a frequency deviation change pattern of the users connected to the first transmitting / receiving device is the same as a frequency deviation change pattern of the users connected to the second transmitting / receiving device; wherein the first transmitting / receiving device and the second transmitting / receiving device are respectively located at two boundaries of the first cell; The total number of users in the first cell is greater than a third threshold, the variation of the total number of users per unit time is greater than a fourth threshold, and the user frequency deviation variation patterns of multiple users connected to the third transmitting and receiving device in the first cell are the same.

6. The strategy adjustment method according to claim 2 or 4, characterized in that: Determining, according to the second user status information, whether the first cell is about to enter a target network state may include one or more of the following: The total number of users in the first cell and the total number of users in the second cell are both greater than a fifth threshold, and a switching rule for users in the first cell switching between multiple transmitting and receiving devices is the same as a switching rule for users in the second cell switching between multiple transmitting and receiving devices; The total number of users in the first cell is less than the fifth threshold, but the total number of users in at least two second cells adjacent to the first cell is respectively greater than the fifth threshold, and a switching rule for users in one of the second cells to switch between multiple transmitting and receiving devices is opposite to a switching rule for users in another second cell to switch between multiple transmitting and receiving devices.

7. The strategy adjustment method according to claim 1, characterized in that: The method further comprises: When it is determined that the first cell corresponding to the first network device is about to enter the target network state, an early warning notification is sent to the second network device.

8. The strategy adjustment method according to claim 1, characterized in that: The method further comprises: Send second user status information of the first cell to the second network device.

9. The strategy adjustment method according to claim 1 or 7, characterized in that: The warning notice includes one or more of the following information: a cell identifier of a cell receiving the early warning notification; The cell identifier of the cell from which the early warning notification is sent; The second indication information is used to indicate entering the warning state; Resource occupancy information when the train passes through each transmitting and receiving device.

10. The strategy adjustment method according to claim 1, characterized in that: When the network policy adjustment includes adjusting the network resource configuration, the performing of the network policy adjustment includes one or more of the following: Implement access assurance strategies; Implementing minimum demand protection strategy; Implement differentiated demand assurance strategies; Perform a network posture assessment.

11. The strategy adjustment method according to claim 1, characterized in that: The network policy adjustment includes terminal service adjustment, and the executing network policy adjustment includes: A service adjustment notification message is sent to the terminal to notify the terminal to restrict the sending of request messages other than voice and data service packet requests.

12. The strategy adjustment method according to claim 10, characterized in that: The method further comprises: Determining a strategy for executing the network resource configuration adjustment according to a quantity level corresponding to the number of users in the target network state and a state level corresponding to the network utilization rate; Therein, a plurality of combinations of different levels of the number of users and different levels of the network utilization have a predetermined corresponding relationship with different strategies for adjusting the network resource configuration.

13. The strategy adjustment method according to claim 1, characterized in that: The method further comprises: If the second condition is met, exit the network policy adjustment; wherein the second condition includes one or more of the following: The oncoming train is detected to leave the first cell; Determine whether the predetermined predicted duration of the meeting has arrived.

14. A strategy adjustment device, characterized in that: Applied to a first network device, the apparatus includes: A first policy execution module is configured to execute a network policy adjustment when a first condition is met; the network policy adjustment includes a network resource configuration adjustment and / or a terminal service adjustment; The first condition includes one or more of the following: determining that a first cell corresponding to the first network device is about to enter a target network state; Obtain an early warning notification sent by a second network device to remind entering the target network state; wherein the second network device is a network device corresponding to a neighboring cell of the first cell.

15. A network device, characterized in that: The method comprises a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the policy adjustment method according to any one of claims 1 to 13.

16. A readable storage medium, characterized in that The readable storage medium stores a program, and when the program is executed by the processor, the steps in the policy adjustment method according to any one of claims 1 to 13 are implemented.

17. A computer program product, characterized in that The method comprises computer instructions, which, when executed by a processor, implement the steps in the policy adjustment method according to any one of claims 1 to 13.

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