CN105704792A - Energy-saving method and apparatus for base station along railway - Google Patents

Abstract

The invention provides an energy-saving method and device for a base station along a railway, which solves the problem that when using a parameter threshold value to judge the shutdown and wake-up of a base station in a scene along a railway line, it is difficult to set a reasonable threshold value because the parameter change is not obvious, and the due energy saving cannot be achieved. The problem. The method includes: obtaining the increase or decrease of the first preset parameter of the decision-making cell, wherein the first preset parameter is affected by the first cell when the train enters the first cell The network performance parameters that become larger due to the influence of the second cell and become smaller due to the influence of the second cell when the train leaves the second cell, and the first cell, the decision-making cell, and the second cell are arranged adjacent to each other in a chain; When the amount reaches the preset first change value, send the first control command to the base station of the decision-making cell to deactivate the low power consumption mode of the base station; The base station sends a second control instruction for activating the low power consumption mode of the base station.

Description

Energy-saving method and device for base stations along railway lines

technical field

The invention relates to the field of access networks, in particular to an energy-saving method and device for base stations along railway lines.

Background technique

Nowadays, the high-speed railway covers most of the domestic areas, and its routes are selected in remote suburbs. In order to provide users on the high-speed railway with better network coverage, various mobile operators have set up corresponding supporting wireless base stations along the railway for Guaranteed user experience. At present, the huge challenges faced by high-speed mobile communication are:

(1). Penetration loss is large. The new train of high-speed railway adopts fully enclosed carriage structure, the carriage body is made of metal materials such as stainless steel or aluminum alloy, and the window glass is made of thicker glass material. Wireless coverage in the body poses greater difficulties. Due to the differences in material and speed of different trains, the penetration loss of wireless signals varies greatly. Different angles of incidence correspond to different penetration losses, and the penetration loss is the smallest when the signal is vertically incident. When the vertical position of the base station is close to the railway, the incident angle of the signal at the edge of the coverage area entering the carriage is small, and the penetration loss is large.

(2). Doppler frequency deviation. The high-speed movement of the train will cause Doppler frequency deviation, which will cause the frequency of the received signal at the receiving end to change, and the magnitude and speed of the frequency change are related to the speed of the train. The large frequency offset caused by high speed is a great challenge to the improvement of receiver demodulation performance.

(3). Frequent switching. Due to the limited coverage of a single station, the high-speed movement of the train will pass through the coverage of multiple cells in a short time, causing frequent inter-cell handovers, which will affect the overall performance of the network.

At present, RRU (abbreviation for Radioremoteunit, radio remote unit) common cell technology is generally used along the railway line. It is developed based on the distributed base station architecture. The cells belong to different sites physically, but logically belong to the same cell. When the coverage areas of multiple RRUs belonging to the same logic cell are partially overlapped and connected in a ring, a narrow strip with high signal strength is suitable for the cell coverage scheme along the railway line, which is conducive to increasing the coverage signal strength, as shown in Figure 1. For mobile services under the coverage of a shared cell, all sub-cells in the shared cell in the uplink direction maintain receiving status at all times, and broadcast channels in all sub-cells in the shared cell in the downlink direction keep in the transmitting state at all times, and only the sub-cell with the best quality is selected for transmission in other channels .

The advantages of sharing a cell with multiple RRUs are as follows: (1) Reduce the handover between cells and improve the success rate of handover. The RRU multi-site shared cell technology has greatly expanded the coverage of a single cell (calculated based on the coverage of a single sub-cell of 500 meters, and the configuration of 8 sub-cells, the coverage can reach nearly 4 kilometers), and the different sub-cells of the shared cell are no longer Handover is required, replaced by relay between different sub-cells. When the mobile station crosses the coverage area, only cell-entry handover and cell-exit handover occur, and service continuation is realized through the handover between sub-cells. (2) Improve carrier frequency utilization. Reduce the difficulty of frequency planning and reduce interference. The traffic distribution along the railway is special, and the distance between the trains is relatively long. For a section of railway line, although there are several consecutive residential areas, the main traffic is often concentrated in one residential area. The RRU multi-site shared cell lengthens the coverage length of the cell, improves the utilization rate of frequency points, and reduces the frequency point interference of adjacent cells at the same time.

But at the same time, in the multi-RRU common cell, the base station signal of the railway mobile communication network is continuously transmitted. No matter whether there is a train passing by, the base station will radiate the signal to ensure that the train can provide enough signals in time when the train passes by. In addition, the signals of the railway mobile communication network and the base stations deployed on the operator's public network have overlapping coverage, and the base stations along the high-speed rail adopt the method of increasing the transmission power for a long time to provide enough power for users on the high-speed train. For good service, when there is no high-speed train passing by, due to the frequency band configuration, sometimes it will cause serious interference to the public network near the high-speed rail.

Existing technical solutions generally adopt base station wake-up and shutdown based on parameters such as load. Applicable to the scenario of hierarchical coverage of compensation cells and energy-saving cells, when the load of the compensation cell exceeds the set threshold, a cell wake-up call command is sent to the energy-saving cell, and the energy-saving cell is activated to process user access requests; the latter is selectively closed when the load drops Energy-saving district. This solution is proposed for the tidal effect of users in the urban cellular network. When the load is higher than a certain threshold during the day, the energy-saving cell is turned on, and when the load is low at night and a certain threshold is turned off, the energy-saving cell is turned off to save power and improve The purpose of system energy efficiency.

However, the above-mentioned technical scheme of base station wake-up and shutdown based on load and other parameters requires a threshold value when making a decision. In a scenario where the number of users in a train along a railway line is not fixed, the threshold value of load and other parameters is difficult to configure. If it is set to a small threshold value, it will easily cause misjudgment and fail to achieve the purpose of energy saving.

The specific reason is that the base stations in low power consumption mode along the railway are different from the energy-saving small base stations in the layered network. The latter are covered by compensation base stations. When the overall load is low, the compensation base stations can also carry part of the load, and load judgment does not It is particularly accurate, but the base stations in low power mode along the railway are dedicated to train users, and generally there is no other base station coverage. When any train users arrive, even if there are very few train users, the base stations along the railway must also Achieve accurate early wake-up.

Therefore, the problem existing in the existing technical solution is that when using the parameter threshold value to judge the shutdown and wake-up of the base station in the scene along the railway, it is not easy to set a reasonable threshold value because the parameter change is not obvious, so the due energy saving cannot be achieved.

Contents of the invention

The purpose of the present invention is to provide an energy-saving method and device for a base station along a railway, to solve the problem that when using a parameter threshold value to judge the shutdown and wake-up of a base station in a scene along a railway line, it is not easy to set a reasonable threshold value because the parameter change is not obvious, so The problem of energy saving cannot be achieved.

In order to solve the above technical problems, the present invention provides an energy-saving method for a base station along a railway, which is applied to a decision-making cell, and the method includes:

Obtaining the increase or decrease of the first preset parameter of the decision-making cell, wherein the first preset parameter is affected by the first preset parameter when the train enters the first cell Network performance parameters that become larger due to the influence of the first cell and become smaller due to the influence of the second cell when the train leaves the second cell, and the first cell, the decision-making cell, and the second cell Arranged next to each other in a chain;

When the increase variation reaches a preset first variation value, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell;

When the decreasing variation reaches a preset second variation value, sending a second control instruction for activating a low power consumption mode of the base station to the base station of the decision-making cell.

Wherein, the energy-saving method of the base station along the railway also includes:

The decision-making cell receives the first control instruction from the serving cell in the chain adjacent cells of the decision-making cell, triggering the base station of the decision-making cell to enter the normal working mode from the low power consumption mode; or

The decision-making cell receives the second control instruction from the serving cell in the chain adjacent cells of the decision-making cell, triggering the base station of the decision-making cell to enter the low power consumption mode from the normal working mode.

Further, the first preset parameter is an average value of interference noise detected on each uplink PRB of the base station of the decision-making cell.

The present invention provides an energy-saving method for a base station along a railway, which is applied to a serving cell. The serving cell is a chain adjacent cell of a decision-making cell. The method includes:

Acquiring an increase or decrease of a second preset parameter of the serving cell, where the second preset parameter is a network performance parameter of the serving cell when a train enters/leaves the serving cell There are varying parameters;

When the increase variation of the second preset parameter is a preset third variation value, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell; or

When the decreasing variation of the second preset parameter is a preset fourth variation, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell;

After the base station of the decision-making cell is turned on for a preset time, a second control instruction for activating the low power consumption mode of the base station is sent to the base station of the decision-making cell.

Further, when the increase variation of the second preset parameter is a preset third variation value, sending the first control instruction of deactivating the low power consumption mode of the base station to the base station of the decision-making cell Steps, specifically:

When the increase variation of the second preset parameter is a preset third variation value, sending a first control instruction of deactivating the low power consumption mode of the base station to the base station of the decision-making cell via a preset interface.

Further, when the reduction variation of the second preset parameter is a preset fourth variation value, sending the first control instruction of deactivating the low power consumption mode of the base station to the base station of the decision-making cell Steps, specifically:

When the decrease variation of the second preset parameter is a preset fourth variation value, sending a first control instruction of deactivating the low power consumption mode of the base station to the base station of the decision-making cell via a preset interface.

Further, the second preset parameter is an average load reference signal received power (RSRP) value of users in the cell.

Correspondingly, the present invention provides an energy-saving device for a base station along a railway, which is applied to a decision-making cell, and the device includes:

The first acquisition module is used to acquire the increase or decrease of the first preset parameter of the decision-making cell, wherein the first preset parameter is when the train enters A network performance parameter that becomes larger due to the influence of the first cell in the first cell and becomes smaller due to the influence of the second cell when the train leaves the second cell, and the first cell, the decision The sub-district and the second sub-district are arranged adjacent to each other in a chain;

The first sending module is configured to send a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell when the increase variation reaches a preset first variation value;

The second sending module is configured to send a second control instruction for activating a low power consumption mode of the base station to the base station of the decision-making cell when the reduced variation reaches a preset second variation value.

Further, the energy-saving device of the base station along the railway also includes:

The first receiving module is used for the decision-making cell to receive the first control instruction from the serving cell in the chain adjacent cells of the decision-making cell to trigger the base station of the decision-making cell to enter the normal working mode from the low power consumption mode; or

The second receiving module is used for the decision-making cell to receive the second control instruction from the serving cell in the chain adjacent cells of the decision-making cell to trigger the base station of the decision-making cell to enter the low power consumption mode from the normal working mode.

Further, the first preset parameter is an average value of interference noise detected on each uplink PRB of the base station of the decision-making cell.

The present invention provides an energy-saving device for a base station along a railway, which is applied to a serving cell, where the serving cell is a chain adjacent cell of a decision-making cell, and the device includes:

The second obtaining module is used to obtain the increase or decrease of the second preset parameter of the serving cell, wherein the second preset parameter is that the train enters/exits the serving cell so that the The network performance parameters of the serving cell have changed parameters;

The third sending module is configured to send the first control of deactivating the low power consumption mode of the base station to the base station of the decision-making cell when the increase variation of the second preset parameter is a preset third variation value order; or

When the decreasing variation of the second preset parameter is a preset fourth variation, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell;

The fourth sending module is configured to send a second control instruction for activating the low power consumption mode of the base station to the base station of the decision-making cell after the base station of the decision-making cell is turned on for a preset time.

Further, the third sending module includes:

The first sending submodule is configured to send the low power consumption of the deactivated base station to the base station of the decision-making cell via a preset interface when the increase variation of the second preset parameter is a preset third variation value Mode's first control command.

Further, the third sending module includes:

The second sending submodule is configured to send the low power consumption of the deactivated base station to the base station of the decision-making cell via a preset interface when the decrease variation of the second preset parameter is a preset fourth variation value Mode's first control command.

Further, the second preset parameter is an average load reference signal received power (RSRP) value of users in the cell.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the solution of the present invention, when the increase and change of the first preset parameter of the decision-making cell affected by the first cell is the preset first change value, sending a low signal to the base station of the decision-making cell to activate the base station The first control instruction of the power consumption mode makes the base station of the decision-making cell change from the low power consumption mode to the normal operation mode; Change the value, send the second control instruction to activate the low power consumption mode of the base station to the base station of the decision-making cell, so that the base station of the decision-making cell changes from the normal operation mode to the low power consumption mode, so that the base station in the first preset parameter After the change meets the corresponding conditions, send a control command to the base station of the decision-making cell to trigger the change of the working state of the base station, so that it is generally in a low power consumption mode under normal circumstances, and activate or deactivate the low power consumption of the base station when the first preset parameter changes mode, so that parameter changes are easy to monitor and save energy without affecting user service quality, and accurately judge the arrival and departure of trains. The base station works to achieve more precise and efficient energy saving.

Description of drawings

Figure 1 is a schematic diagram of RRU multi-site common cell;

Fig. 2 is one of the step schematic diagrams of the energy saving method of the base station along the railway according to the embodiment of the present invention;

Fig. 3 is one of the schematic diagrams of the energy saving scheme along the railway according to the embodiment of the present invention;

Fig. 4 is the average value of the interference noise detected on each uplink PRB of the base station of the decision-making cell according to the embodiment of the present invention;

Fig. 5 is one of the step schematic diagrams of the energy saving method of the base station along the railway according to the embodiment of the present invention;

Fig. 6 is one of the schematic diagrams of the energy saving scheme along the railway according to the embodiment of the present invention;

Fig. 7 is one of the structural diagrams of the energy-saving device of the base station along the railway according to the embodiment of the present invention;

Fig. 8 is one of the structural diagrams of the energy-saving device of the base station along the railway according to the embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

For easy reference in the more detailed description below, it should be noted that the average value of the interference noise detected on each PRB of the system uplink is a value used to measure the interference of adjacent cells of the decision-making cell in the network. Specifically, each system uplink Table 1 shows the relationship between the average value of the interference noise detected on the PRB (Physical resource block, physical resource block) and the interference level.

According to the requirements of LTE (LongTermEvolution, long-term evolution) exceeding -120dBm, it is considered that there is interference from users in adjacent cells of the decision-making cell

The present invention aims at the problem in the prior art that when the parameter threshold value is used to judge the shutdown and wake-up of the base station in the scene along the railway line, it is not easy to set a reasonable threshold value because the parameter change is not obvious, so the due energy saving cannot be achieved, and a solution is provided. An energy-saving method and device for a base station along a railway line, which controls the base station in a decision-making cell through changes in preset parameters, and activates or deactivates the low power consumption mode of the base station when the parameter changes, so as to achieve more accurate and efficient energy-saving purposes.

As shown in Figure 2, the energy-saving method of the energy-saving method of the base station along the railway in the embodiment of the present invention is applied to the decision-making cell, and the method includes:

Step 201, obtaining the increase or decrease of the first preset parameter of the decision-making cell, wherein the first preset parameter is when the train enters the first cell A network performance parameter that becomes larger due to the influence of the first cell and becomes smaller due to the influence of the second cell when the train leaves the second cell, and the first cell, the decision-making cell, and the The second sub-districts are arranged adjacent to each other in a chain;

Wherein the increase or decrease of the first preset parameter means that when a train passes through any of the chain-shaped adjacent cells on both sides of the decision-making cell, the decision-making cell is affected by the train The change information of the network performance parameters of the cell can refer to the change of the load increase or decrease, or the change of the average value of the interference noise detected on each PRB of the system uplink of the decision-making cell. For any one of the adjacent cells on both sides, the first change information of the network performance parameters of the cell affected by the train and the type of the preset parameters all belong to the scope of protection of the present invention and will not be listed one by one here.

Step 202, when the increase variation reaches a preset first variation value, send a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell;

Sending the first control instruction of deactivating the low power consumption mode of the base station to the base station of the decision-making cell is to trigger the base station to change from the low power consumption mode to the normal working mode. Wherein, the first variation value can be set according to user requirements and network requirements, and any value that can reflect the variation of the first preset parameter belongs to the protection scope of the present invention.

Step 203, when the reduced variation reaches a preset second variation value, sending a second control instruction to activate the low power consumption mode of the base station to the base station of the decision-making cell;

Sending the second control instruction of deactivating the low power consumption mode of the base station to the base station of the decision-making cell is to trigger the base station to change from the normal working mode to the low power consumption mode. The second variation value can be set according to user needs and network requirements, and any value that can reflect the change of the first preset parameter belongs to the scope of protection of the present invention. The above-mentioned second variation value can be the same value, and the specific situation depends on the actual application.

After step 202 is executed, the base station of the decision-making cell is in a normal working state. When the decision-making cell comes out from the entered cell and the process of entering the next adjacent cell from the decision-making cell, the base station of the decision-making cell is all in operation. state, after leaving the next adjacent cell, when the first preset parameter becomes smaller and the amount of change is reduced through step 203, the base station of the decision-making cell is in a low power consumption state.

The processes of sending the first control instruction and the second control instruction in steps 201 to 203 are all automatically executed internally between the base stations belonging to the decision-making cell.

Both the first control signaling and the second control signaling for controlling the base station to the base station of the decision-making cell are for controlling the working status of the base station of the decision-making cell. The switching process of the working state of the base station in the decision cell requires a predetermined length of time to respond. The general response time includes but is not limited to: monitoring and judgment time, processing time for sending instructions, and wake-up time for the base station. Among them, the monitoring and judgment time can generally be set to 10s, and the processing time of sending instructions can be basically ignored. The base station activates or deactivates the low-power mode conversion time according to the degree of sleep. The startup time of each hardware is approximately: power amplifier and RF small signal It is at the level of us, generally no more than 15us; the start-up time of the intermediate frequency system is longer, depending on the level of hardware technology, the maximum is at the level of minutes. For a cell with a coverage length of 4km, the train speed is set to 300km/h. In a logical cell with a length of 4km, the train stays in the cell for 48s, which can be selected according to the overall duration of the response time. The depth of the base station's dormancy, the above steps are performed within the allowed time range, any dormancy length and response time that can be executed belong to the protection scope of the present invention, and no examples are given here.

Assume that a train runs every 30 minutes. In a logical community with a length of 4km (data from Anshan Company), the speed of the train is 300 kilometers per hour. It only takes 0.8 minutes to pass through the community, which is equal to 48 seconds. Assuming that there are 6 hours at night in a day Resting and running for 18 hours, the base station needs to be turned on at least: 36 train times times 48s times 2 equals 57.6 minutes, which is less than one hour, and the other 23 hours can be turned off. Even taking into account the time to turn on the base station, the waiting time to turn it off, and the time to turn it off, the potential for energy savings is substantial.

In the above steps 201 to 203, by obtaining the increase and decrease of the first preset parameter of the decision-making cell (step 201), the first preset parameter of the decision-making cell affected by the first cell When the amount of increase and change is the preset first change value, send a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell, so that the base station of the decision-making cell changes from the low power consumption mode to normal In the working mode (step 202), the reduction variation of the first preset parameter of the decision-making cell affected by the second cell is the preset second variation value, and the low power consumption of the activated base station is sent to the base station of the decision-making cell The second control instruction of the mode makes the base station of the decision-making cell change from the normal operation mode to the low power consumption mode (step 203). Therefore, after the change of the first preset parameter reaches the corresponding condition, a control instruction is sent to the base station of the decision-making cell to trigger the change of the working state of the base station, so that it is generally in a low power consumption mode under normal circumstances, and when the first preset parameter changes It will activate or deactivate the low power consumption mode of the base station, so that parameter changes are easy to monitor and save energy without affecting the quality of user service. It also accurately judges the arrival and departure of the train, only in the decision-making area where the train is along the railway The base station of the decision-making cell is only turned on in the neighboring cell to achieve more accurate and efficient energy saving.

In order not only to obtain information for self-monitoring to control the working state of the base station of the decision-making cell, but also to control the working state of the base station of the decision-making cell in other ways, so in the energy-saving method of the base station along the railway in the embodiment of the present invention, it also includes:

Step 11, the decision-making cell receives the first control instruction from the serving cell in the chain adjacent cells of the decision-making cell, triggering the base station of the decision-making cell to enter the normal working mode from the low power consumption mode; or

Step 12, the decision-making cell receives a second control instruction from the serving cell in the chain adjacent cells of the decision-making cell, triggering the base station of the decision-making cell to enter the low power consumption mode from the normal working mode.

Specifically, in the energy-saving method for base stations along the railway in the embodiment of the present invention, the first preset parameter is the average value of interference noise detected on each uplink PRB of the base station of the decision-making cell.

Only the fast movement of the train on the high-speed rail can cause the parameters to change significantly. Therefore, the decision-making of the average value of the interference noise detected on each PRB in the uplink of the decision-making cell system is taken as an example as follows.

In a cellular network environment, the average value of the interference noise detected on each uplink PRB of the decision-making cell system is related to the white noise of the surrounding environment, and there will be a difference of about 10dB in different environments; it is also related to the adjacent cell services of the decision-making cell It is related to the size of the traffic. When the traffic volume of the adjacent cell of the decision-making cell is large, the value will increase accordingly. In a fixed environment, the value is relatively stable because the traffic changes slowly. In the wireless environment along the high-speed rail, since the base station only serves train users, when the user accesses the adjacent cell of the decision-making cell, the value will increase significantly, so the base station of the decision-making cell can be used to detect on each PRB uplink The change of the average value of the interference noise is used to decide whether to turn on and off the base station of the cell.

Example 1:

When there is no user access in the two cells around the decision-making cell, there is only noise interference in this item. Due to the different environments of the base station, the noise interference value varies greatly. When the train accesses the cell A adjacent to the decision-making cell during running, as shown in Figure 3, if there is interference to the decision-making cell B, the average of the interference noise detected on each uplink PRB in the decision-making cell will be The value has a significant increase on the basis of the original noise. Figure 4 shows the change of the average value of the interference noise detected on each uplink PRB over time under two environments with different noise interference. It is generally believed that the average change exceeds -10dBm That is, there is interference from users in adjacent cells of the decision-making cell. Therefore, when the decision-making cell monitors that the average value of the interference noise detected on each uplink PRB has increased by -10dBm, it can be judged that there is user access in the adjacent cell of the decision-making cell, thereby triggering the base station to activate the low power consumption mode .

When the train leaves the adjacent cell of the next decision-making cell of decision-making cell B, the base station of the decision-making cell detects that the average value of the interference noise detected on each uplink PRB of the decision-making cell drops, so when the After the average value of the interference noise drops by 10dBm, it can be judged that the user in the adjacent cell of the decision-making cell has left, thereby triggering the self-base station to activate the low power consumption mode.

Example two:

When the train accesses the cell C adjacent to the decision-making cell during driving, if there is interference to the decision-making cell B, the average value of the interference noise detected on each uplink PRB in the decision-making cell will be greater than the original noise Figure 4 shows the change of the average value of the interference noise detected on each uplink PRB over time under two environments with different noise interference. It is generally believed that the average change exceeds -15dBm, which means that there is a noise from the decision-making cell. Interference from neighboring cell users. Therefore, when the decision-making cell monitors that the average value of the interference noise detected on each uplink PRB has increased by -15dBm, it can be judged that there is user access in the adjacent cell of the decision-making cell, thereby triggering the base station to activate the low power consumption mode .

When the train leaves the adjacent cell A of the next decision-making cell of decision-making cell B, the base station of the decision-making cell detects that the average value of the interference noise detected on each uplink PRB drops, so when the decision-making cell detects After the average value of the received interference noise drops by 15dBm, it can be judged that the user in the adjacent cell of the decision-making cell has left, thereby triggering the self-base station to activate the low power consumption mode.

As shown in Figure 5, another embodiment of the present invention is an energy-saving method for a base station along a railway line, which is applied to a serving cell, where the serving cell is a chain adjacent cell of a decision-making cell, and the method includes:

Step 501, obtaining the increase or decrease of the second preset parameter of the serving cell, wherein the second preset parameter is that the train enters/exits the serving cell so that the serving cell Parameters with changing network performance parameters;

Wherein the increase or decrease of the second preset parameter refers to the change of the average RSRP (abbreviation of Reference signal received power load, load reference signal received power) value of the adjacent serving cell users of the chain adjacent base stations, any When a train passes through any of the adjacent cells on both sides, the first change information of the network performance parameters of the cells affected by the train and the type of preset parameters all belong to the protection scope of the present invention. This is not an example.

Step 502, when the increase variation of the second preset parameter reaches a preset third variation value, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell; or

Step 503, when the reduction variation of the second preset parameter reaches a preset fourth variation value, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell;

Wherein, the third change value and the fourth change value can be set according to user requirements and network requirements, and any value that can reflect the change of the second preset parameter belongs to the scope of protection of the present invention. The third variation value and the fourth variation value may be the same value, and the specific situation depends on the actual application.

Step 504: After the base station of the decision-making cell is turned on for a preset time, send a second control instruction for activating the low power consumption mode of the base station to the base station of the decision-making cell.

Wherein the preset time can be set according to user needs and network requirements, and any time length that can make the base station of the decision-making cell enter the state of low power consumption mode from the normal working mode belongs to the protection scope of the present invention .

It is also possible to detect and obtain the increase or decrease of the second preset parameter in the base station of the decision-making cell by the decision-making base station, and then obtain the decrease in the change amount in the decision-making cell to reach the preset change amount When set to a value, activates the low power consumption mode of the base station of the decision cell.

In step 501 to step 504, the increase or decrease of the second preset parameter of the base station of the serving cell is obtained (step 501), and then the increase or decrease of the second preset parameter After reaching the corresponding conditions, the serving cell sends a control command to the base station of the decision-making cell to trigger the change of the working state of the base station (step 502 and step 503). Finally, in order to close the decision-making base station, the decision-making cell can be closed after setting a preset time Base station (step 504). In this way, the original mode remains unchanged when the parameters do not change. When the parameters change, other cells trigger instructions to decide whether the cell activates or deactivates the low power consumption mode of the base station. It is also convenient to detect parameter changes without affecting the quality of user service. At the same time, the energy consumed by the base station being started all the time is saved.

Specifically, in another embodiment of the present invention, in the energy-saving method for base stations along railway lines, step 502 is specifically:

Step 21, when the increase variation of the second preset parameter reaches a preset third variation value, send the first control to deactivate the low power consumption mode of the base station to the base station of the decision-making cell via a preset interface instruction.

Wherein the preset interface may refer to the X2 interface.

Specifically, in another embodiment of the present invention, in the energy-saving method for base stations along railway lines, step 503 is specifically:

Step 31: When the decrease variation of the second preset parameter reaches a preset fourth variation value, send the first control to deactivate the low power consumption mode of the base station to the base station of the decision-making cell via a preset interface instruction

Wherein the preset interface may refer to the X2 interface.

Send the first control instruction to control the working state of the base station to the base station of the decision-making cell through step 21 or step 31, and then the base station of the decision-making cell in steps 11 and 12 receives the first control instruction, so as to control the base station of the decision-making cell by other means The deactivation of the low power consumption mode achieves more precise and efficient energy saving.

Specifically, in another embodiment of the present invention, in the energy-saving method for base stations along railway lines, the second preset parameter is an average load reference signal received power (RSRP) value of users in a cell.

Only the fast movement of the train on the high-speed rail can cause the parameters to change significantly. Therefore, the decision-making of the average RSRP value of the users in the adjacent cells of the decision-making cell is taken as an example as follows.

Along the railway line, due to the regular chain distribution of cells, the RSRP signal strength of users also changes regularly. In the process of users accessing the adjacent cells of the decision-making cell, the RSRP value of the users accessing the adjacent cells of the decision-making cell increases significantly. Therefore, the change of the RSRP value monitored by the adjacent cells of the decision-making cell can be used to determine It is judged that the base station enters the activation or deactivation low power consumption mode. The scenario of the specific solution is shown in Figure 6.

Example 1: When the train enters the serving cell and the serving cell monitors that the RSRP value of its own access users has increased, it can send a signaling to deactivate the low power consumption mode to the decision-making cell B through the X2 port. The above response time mainly includes 3GPP (abbreviation for generation partnership project, 3rd Generation Partnership Project) recommends that the X2 signaling plane time be 10-20 ms for monitoring and judging time, command transmission time and base station wake-up time. Therefore, the supported configurable maximum monitoring time is 48s, 20ms, and 15us. In this solution, the base station has enough time to perform monitoring and wake-up, so the decision-making cell can enter a deeper low-power consumption mode.

Example 2: When the train is about to leave the serving cell and the serving cell monitors that the RSRP value of its own access users has decreased, it sends a signaling to deactivate the low power consumption mode to cell B. At this time, the maximum detection time supported is 6s , 20ms and 15us. In this solution, the time for the base station to perform monitoring and wake-up is relatively small, but the energy saving is also greater, and a specific solution can be selected according to the actual situation during implementation.

This proposal takes advantage of the characteristics of regular changes in parameters when the train passes through the chain-like cells along the railway, through the monitoring of the base station of the decision-making cell or the monitoring of the parameters of the adjacent base stations in the chain, and activates or deactivates the low power consumption of the base station when the parameters change. mode, which can judge the arrival and departure of train users more accurately and efficiently.

In addition, there are advantages such as simple process and wide market application prospects. With the further popularization of high-speed rail and the improvement of operators' requirements for service quality and cost reduction, the application range of this technology will become wider and wider.

Along the railway line, due to the regular chain-like distribution of cells, the movement of users also shows regular changes. In view of the characteristics of regular changes in parameters when train users pass through various chain-shaped cells along the railway line, this proposal uses decision-making cells to monitor local The base station or the chain adjacent base station monitors the change of parameters to control the wake-up and shutdown of the base station of the decision-making cell, and the change of the average value of the interference noise detected on each PRB uplink of the decision-making cell system or the adjacent cell users of the decision-making cell The change of the average RSRP value keeps the original mode unchanged when the parameters do not change, and activates or deactivates the low power consumption mode of the base station when the parameters change. Compared with the existing scheme, this proposal can judge the arrival and departure of train users more accurately and efficiently, and save energy without affecting the quality of user service.

As shown in Figure 7, correspondingly, another embodiment of the present invention is an energy-saving device for a base station along a railway line, which is applied to a decision-making cell, and the device includes:

The first acquisition module 701 is configured to acquire the increase or decrease of the first preset parameter of the decision-making cell, where the first preset parameter is A network performance parameter that becomes larger due to the influence of the first cell when entering the first cell and becomes smaller due to the influence of the second cell when the train leaves the second cell, and the first cell, the The decision-making cell and the second cell are arranged adjacent to each other in a chain;

The first sending module is configured to send a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell when the increase variation reaches a preset first variation value;

The second sending module 702 is configured to send a second control instruction for activating a low power consumption mode of the base station to the base station of the decision-making cell when the decreasing variation reaches a preset second variation value.

The increase and decrease of the first preset parameter of the decision-making cell are acquired through the first acquisition module 701, and then the increase and change of the first preset parameter of the decision-making cell affected by the first cell is the preset When the first change value is set, the first sending module sends a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell, so that the base station of the decision-making cell changes from a low power consumption mode to a normal working mode, Finally, the reduced variation of the first preset parameter of the decision-making cell affected by the second cell is the preset second variation value, and the second sending module 702 sends a low power consumption mode activation base station to the base station of the decision-making cell The second control instruction makes the base station of the decision-making cell change from the normal working mode to the low power consumption mode. Therefore, after the change of the first preset parameter reaches the corresponding condition, a control instruction is sent to the base station of the decision-making cell to trigger the change of the working state of the base station, so that it is generally in a low power consumption mode under normal circumstances, and when the first preset parameter changes It will activate or deactivate the low power consumption mode of the base station, so that parameter changes are easy to monitor and save energy without affecting the quality of user service. It also accurately judges the arrival and departure of the train, only in the decision-making area where the train is along the railway The base station of the decision-making cell is only turned on in the neighboring cell to achieve more accurate and efficient energy saving.

The energy-saving device of the base station along the railway in another embodiment of the present invention also includes:

The first receiving module is used for the decision-making cell to receive the first control instruction from the serving cell in the chain adjacent cells of the decision-making cell to trigger the base station of the decision-making cell to enter the normal working mode from the low power consumption mode; or

The second receiving module is used for the decision-making cell to receive the second control instruction from the serving cell in the chain adjacent cells of the decision-making cell to trigger the base station of the decision-making cell to enter the low power consumption mode from the normal working mode.

In another embodiment of the present invention, in the energy-saving device for base stations along railway lines, the first preset parameter is the average value of interference noise detected on each uplink PRB of the base station of the decision-making cell.

As shown in Figure 8, the present invention also provides an embodiment of an energy-saving device for a base station along a railway line, which is applied to a serving cell, where the serving cell is a chain adjacent cell of a decision-making cell, and the device includes:

The second acquisition module 801 is configured to acquire the increase or decrease of the second preset parameter of the serving cell, wherein the second preset parameter is that the train enters/exits the serving cell such that The network performance parameters of the serving cell have changed parameters;

The third sending module 802 is configured to send the first instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell when the increase variation of the second preset parameter is a preset third variation value control instructions; or

When the decreasing variation of the second preset parameter is a preset fourth variation, sending a first control instruction to deactivate the low power consumption mode of the base station to the base station of the decision-making cell;

The fourth sending module 803 is configured to send a second control instruction for activating the low power consumption mode of the base station to the base station of the decision-making cell after the base station of the decision-making cell is turned on for a preset time.

The increase or decrease of the second preset parameter of the serving cell is acquired through the second acquisition module 801, and then after the increase or decrease of the second preset parameter meets the corresponding conditions, the second The third sending module 802 serving cell sends a control instruction to the base station of the decision-making cell to trigger the change of the working state of the base station. Finally, in order to shut down the decision-making base station, a preset time can be set to turn off the base station of the decision-making cell through the fourth sending module 803 . In this way, the original mode remains unchanged when the parameters do not change. When the parameters change, other cells trigger instructions to decide whether the cell activates or deactivates the low power consumption mode of the base station. It is also convenient to detect parameter changes without affecting the quality of user service. At the same time, the energy consumed by the base station being started all the time is saved.

In the energy-saving device of the base station along the railway in another embodiment of the present invention, the third sending module 802 includes:

The first sending submodule is configured to send the low power consumption of the deactivated base station to the base station of the decision-making cell via a preset interface when the increase variation of the second preset parameter is a preset third variation value Mode's first control command.

In the energy-saving device of the base station along the railway in another embodiment of the present invention, the third sending module 802 includes:

The second sending submodule is configured to send the low power consumption of the deactivated base station to the base station of the decision-making cell via a preset interface when the decrease variation of the second preset parameter is a preset fourth variation value Mode's first control command.

In another embodiment of the present invention, in the energy-saving device of the base station along the railway line, the second preset parameter is the average load reference signal received power (RSRP) value of the users in the cell.

It should be noted that the device provided by the present invention is an energy-saving method for a base station along a railway, and all the embodiments of the energy-saving method for a base station along a railway are applicable to the device and can achieve the same or similar beneficial effects.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (14)

1. a power-economizing method for Along Railway base station, is applied to decision-making community, it is characterised in that described method includes:

Obtain the reduction variable quantity increasing variable quantity or described first parameter preset of the first parameter preset of described decision-making community, wherein said first parameter preset is become network performance parameter that is big and that diminished by the impact of described second community when train rolls the second community away from when train sails the first community into by the impact of described first community, and described first community, described decision-making community and described second community are adjacent in catenation successively；

When described increase variable quantity reaches to preset the first change value, send the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community；

When described reduction variable quantity reaches to preset the second change value, send the second control instruction of the low-power consumption mode activating base station to the base station of described decision-making community。

2. method according to claim 1, it is characterised in that also include:

Described decision-making community receives the first control instruction of Serving cell in the chain neighbor cell of self-decision community, and the base station triggering described decision-making community is entered normal mode of operation by low-power consumption mode；Or

Described decision-making community receives the second control instruction of Serving cell in the chain neighbor cell of self-decision community, and the base station triggering described decision-making community is entered low-power consumption mode by normal mode of operation。

3. method according to claim 1, it is characterised in that described first parameter preset is the meansigma methods of the interference noise detected on the up each Physical Resource Block PRB in base station of described decision-making community。

4. a power-economizing method for Along Railway base station, is applied to Serving cell, and described Serving cell is the chain neighbor cell of decision-making community, it is characterised in that described method includes:

Obtaining the increase variable quantity of the second parameter preset of described Serving cell or reduce variable quantity, wherein said second parameter preset is the parameter that train sailed/rolled away from that described Serving cell makes the network performance parameter of described Serving cell change into；

When increase variable quantity at described second parameter preset reaches to preset the 3rd change value, send the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community；Or

When reduction variable quantity at described second parameter preset reaches to preset the 4th change value, send the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community；

After Preset Time is opened in the base station of described decision-making community, send the second control instruction of the low-power consumption mode activating base station to the base station of described decision-making community。

5. method according to claim 4, it is characterized in that, when the described increase variable quantity at described second parameter preset reaches to preset the 3rd change value, send the step of the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community, particularly as follows:

When increase variable quantity at described second parameter preset reaches to preset the 3rd change value, send the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community via preset interface。

6. method according to claim 4, it is characterized in that, when the described reduction variable quantity at described second parameter preset reaches to preset the 4th change value, send the step of the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community, particularly as follows:

When reduction variable quantity at described second parameter preset reaches to preset the 4th change value, send the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community via preset interface。

7. method according to claim 4, it is characterised in that described second parameter preset is community user average load Reference Signal Received Power RSRP numerical value。

8. an energy saver for Along Railway base station, is applied to decision-making community, it is characterised in that described device includes:

First acquisition module, for obtaining the reduction variable quantity increasing variable quantity or described first parameter preset of the first parameter preset of described decision-making community, wherein said first parameter preset is become network performance parameter that is big and that diminished by the impact of described second community when train rolls the second community away from when train sails the first community into by the impact of described first community, and described first community, described decision-making community and described second community are adjacent in catenation successively；

First sending module, for when described increase variable quantity reaches to preset the first change value, sending the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community；

Second sending module, for when described reduction variable quantity reaches to preset the second change value, sending the second control instruction of the low-power consumption mode activating base station to the base station of described decision-making community。

9. device according to claim 8, it is characterised in that also include:

First receiver module, receives the first control instruction of Serving cell in the chain neighbor cell of self-decision community for described decision-making community, and the base station triggering described decision-making community is entered normal mode of operation by low-power consumption mode；Or

Second receiver module, receives the second control instruction of Serving cell in the chain neighbor cell of self-decision community for described decision-making community, and the base station triggering described decision-making community is entered low-power consumption mode by normal mode of operation。

10. device according to claim 8, it is characterised in that described first parameter preset is the meansigma methods of the interference noise detected on the up each Physical Resource Block PRB in base station of described decision-making community。

11. an energy saver for Along Railway base station, being applied to Serving cell, described Serving cell is the chain neighbor cell of decision-making community, it is characterised in that described device includes:

Second acquisition module, for obtaining the increase variable quantity of the second parameter preset of described Serving cell or reducing variable quantity, wherein said second parameter preset is the parameter that train sailed/rolled away from that described Serving cell makes the network performance parameter of described Serving cell change into；

3rd sending module, for when the increase variable quantity of described second parameter preset is for presetting the 3rd change value, sending the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community；Or

When the reduction variable quantity of described second parameter preset is for presetting the 4th change value, send the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community；

4th sending module, for, after Preset Time is opened in the base station of described decision-making community, sending the second control instruction of the low-power consumption mode activating base station to the base station of described decision-making community。

12. device according to claim 11, it is characterised in that described 3rd sending module includes:

First sends submodule, for when the increase variable quantity of described second parameter preset is for presetting the 3rd change value, sending the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community via preset interface。

13. device according to claim 11, it is characterised in that described 3rd sending module includes:

Second sends submodule, for when the reduction variable quantity of described second parameter preset is for presetting the 4th change value, sending the first control instruction of the low-power consumption mode of deexcitation base station to the base station of described decision-making community via preset interface。

14. device according to claim 11, it is characterised in that described second parameter preset is community user average load Reference Signal Received Power RSRP numerical value。