CN114521008A - Method for realizing energy conservation of 5G base station through dynamic hard shutdown of traffic - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a method for realizing energy conservation of a 5G base station by dynamic hard shutdown of traffic, which comprises the following steps: confirming the 4G/5G overlapping coverage; acquiring a performance index, namely acquiring the performance index of the 4G/5G base station through a northbound interface; identifying the number of 5G terminals accessed to the 4G base station; 5G cell operation action judgment (namely activation/deactivation); 5G cell operation action is issued (namely, activation/deactivation); 5G, judging power-on/power-off of the cell; the power-on/power-off command is transmitted to the Internet of things platform; the Internet of things platform forwards the command to the hard turn-off module; the hard turn-off module controls the 5G base station to be powered on/off in the idle state; maintaining an operation state; and circularly executing the operations from the step 2 to the step 10. According to the invention, the performance indexes of 4G/5G can be collected through the northbound interface, the use condition of the air interface resources of each pair of commonly covered 4G/5G cells is analyzed, and the operation action of the 5G cell is finally evaluated, so that the 5G cell enters/leaves a deep sleep state and is powered on/off, the energy consumption of a 5G network is reduced, and the network resources are utilized to the maximum extent.
Description
Technical Field
The invention relates to an energy-saving technology in the field of mobile communication, in particular to a method for realizing energy conservation of a 5G base station through dynamic hard switching-off of traffic.
Background
According to the test result of an operator, the power consumption of the 5G single station is about 2.5-3.5 times of that of the 4G single station. The power of 100% service load of the current 5G base station is about 3700W, and the full-load power of the 4G base station is about 1500W. The reason why 5G consumes more power than 4G is mainly because 5G uses a wider wireless bandwidth and 5G base stations are mainly 64T 64R. Wherein the AAU power consumption increase is a main cause of the 5G base station power consumption increase. The BBU power consumption is related to the plugged board, the influence of the service load is not large, and the power consumption under the S111 configuration is 293W-330W. The AAU power consumption is related to the service load, the power consumption under 100% service load is 1127W-1175W, and the no-load average power consumption is 663W. In addition, the coverage capability of the high frequency 5G base station is far less than that of the 4G base station, which means that the 5G network requires more base stations than the 4G base station.
Currently, the mainstream power saving technology on the communication base station side includes: 4 technologies of channel shutdown dormancy, carrier shutdown dormancy, symbol shutdown dormancy, deep dormancy and the like.
1) And (3) channel shutoff: when the load of a certain cell is light, part of transmitting channels of the cell are allowed to be closed so as to save power consumption, and when the increase of the service load is detected, the intelligent shutdown sleep mode is exited, and the original channel transmitting state is recovered.
2) And (3) carrier wave turning off: when a cell is under the scene of same coverage of different frequencies, the different frequency cell of the same coverage is divided into a basic cell and a capacity cell, when the load of the whole cell is less than a set threshold, a base station enters a carrier frequency intelligent turn-off sleep mode, a new user is forbidden to access and switch into the capacity cell, all users on the cell are switched to the basic cell of the same coverage of different frequencies, and the cell carrier frequency is dormant after no user exists.
3) Symbol off: and when no effective data is transmitted, the power amplifier is closed, so that the aim of saving energy is fulfilled. After the intelligent symbol turn-off function is started, the scheduler actively schedules downlink data to a specified symbol according to the busyness degree of the service and through service data volume prediction, and the power amplifier power supply is turned off in the rest symbol time without effective information transmission.
4) Deep dormancy: after entering the deep sleep state, the base station is still in a power-on state, and periodically performs signaling interaction with the core network to maintain the lowest power consumption value (200w), but does not provide services. The autonomous awakening cannot be carried out according to the change of the traffic volume, and manual awakening is needed.
At present, the following defects and deficiencies exist in the conventional power saving scheme, which mainly include:
1) The poor results are that: the symbol turn-off, radio frequency channel turn-off and deep sleep power-saving effects are poor;
2) the time interval is fixed: the deep sleep function is started at 0-6 points every day, the basic power consumption is reduced from 600 watts to 200 watts, and the method is rough;
3) not intelligent enough: the manufacturer equipment only provides a deep sleep function, and needs to manually judge when to turn on the base station to manually wake up.
The prior art has incomplete electricity saving performance, unsatisfactory electricity saving effect and best electricity saving effect only by hard turn-off. When the 4G/5G network is in a light load state or even an idle load state, only the 4G base station is needed to provide service, the 5G base station can enter deep sleep, and even the 5G base station is switched off hard, so that the energy consumption of the 5G base station is reduced. Since the 4G is in the light load state at this time, even if the user falls back to the 4G from the 5G, the user service is basically not influenced. Meanwhile, when the number of the 5G users is large, the 5G base station does not enter a deep sleep state or is turned off hard in consideration of the user perception problem. If the 5G base station is in a deep sleep state or a hard off state, when it is detected that 5G users increase and air interface resources of the 4G base station are in a high load, the 5G base station needs to be awakened from the deep sleep state, the 5G base station is powered on, and the 5G base station is enabled to provide services again.
The manufacturer provides basic power saving feature packs-deep sleep (i.e., essentially blocked sectors). The current setting is 0 o 'clock to 6 o' clock per day, and the background starts the deep sleep function, reducing the base power consumption (i.e., no user power consumption) from 600 watts to 200 watts. The disadvantage of this approach is that the deep sleep function is ready to wake up at any time and is not as energy efficient as powering down directly (i.e., base power consumption from 200 watts to 0 watts) if the fixed time period is not active. In the future, as the number of users increases, it is not feasible to switch off 5G at fixed 0 to 6 points every day in urban areas. Likewise, it is not feasible for the 5G base station of the urban and rural junction not to start deep sleep in the daytime.
The condition of entering deep sleep is met, and then observation is carried out for a plurality of cycles on the basis, the awakening action is not triggered, and at the moment, the hard turn-off action is triggered. In order to maximize the flexible power saving, a deep sleep method is used in the daytime to save power, and the hard turn-off is added at night to improve the power saving performance.
When the number of the 5G base stations is large, deep dormancy cannot be triggered, and hard shutdown cannot be triggered. After the 5G base station is switched off, 5G users accessed to the co-covered 4G base station are increased suddenly, and the 4G base station resources are higher, at this time, the 5G base station is triggered to be powered on and awakened from a deep sleep state.
The direct power-off operation of the AAU can influence the service life of the AAU, and the power-off operation of the 5G cell in a deep dormant state can greatly prolong the service life of the AAU. The 5G base station can not be remotely powered off/on a network manager, hard shutdown equipment needs to be added for realizing the remote control, and the remote power-off/power-on operation is realized by adding the remote control of the Internet of things module.
The hard-off power saving can be dynamically controlled according to the traffic of the 5G network, and the intellectualization is realized. But under what conditions power on/off needs to be judged according to historical data and real-time data, and finally a balance point between energy saving and user experience is found.
The performance indexes of the cells are stored in a performance index server, and the performance indexes are obtained through a northbound interface. The cell operation is that the power-saving platform sends an operation command to the network manager through the southbound interface, and the network manager operates the 5G cell. The power-on/power-off command is sent to the Internet of things platform, the Internet of things platform forwards the power-on/power-off command to the hard turn-off module, and the hard turn-off module controls the idle turn-on to realize the power-on/power-off operation.
At present, in the development period of a 5G network, the number of 5G users in a part of areas is small, the 5G network is basically under light load, and the part of areas are even under no load for a long time. Under the condition that the 5G base station is in light load, the 5G cell can be completely put into a dormant state or turned off hard, so that the power consumption is saved.
At present, to realize deep sleep and hard shutdown of an intelligent 5G base station, the following key problems need to be solved:
1) how to judge the overlapping coverage of the 4G/5G base station;
2) how to obtain the utilization rate of air interface resources of a 4G/5G base station;
3) how to judge the number of 5G terminals accessed under a 4G base station;
4) when the 5G base station triggers deep sleep? When to trigger a hard shutdown;
5) when a 5G base station wakes up from sleep? When to trigger power-up;
6) how to issue a command for entering/waking up deep sleep to a 5G base station;
7) how to remotely power up/down a 5G base station;
8) how to maintain the status of the 5G base station? (active, dormant, off).
At present, in the coverage area of the 4G anchor station, even if the 5G base station is in a dormant state, the mobile phone of the 5G user can still display the 5G icon, although the 5G service cannot be enjoyed at the moment. In the area covered by 4G/5G, the load of the 4G network is not high, the load of the 5G network is light, the 5G base station can be in a dormant state at the moment, the user is basically insensitive, the mobile phone still displays a 5G icon, and when the wireless resources are sufficient, the existing service mode of 4G/5G surfing on the internet is basically indistinguishable.
Disclosure of Invention
The invention aims to provide a method for realizing energy conservation of a 5G base station by means of dynamic hard turn-off of service volume by aiming at the defects of the prior art, the method can acquire the performance index of 4G/5G through a northbound interface, analyze the use condition of the air interface resources of the co-covered 4G/5G cell, finally evaluate the power-off or power-on of the 5G cell, reduce the energy consumption of a 5G network and maximally utilize the network resources.
The technical scheme adopted by the invention for solving the technical problem is as follows: a method for realizing energy conservation of a 5G base station by dynamic hard shutdown of traffic comprises the following steps:
step 1: confirming the 4G/5G overlapping coverage;
step 2: acquiring a performance index, namely acquiring the performance index of the 4G/5G base station through a northbound interface;
and step 3: identifying the number of 5G terminals accessed to the 4G base station;
and 4, step 4: 5G cell operation action judgment (namely activation/deactivation);
and 5: 5G cell operation action is issued (namely, activation/deactivation);
step 6: 5G, judging power-on/power-off of the cell;
and 7: the power-on/power-off command is transmitted to the Internet of things platform;
and 8: the Internet of things platform forwards the command to the hard turn-off module;
and step 9: the hard turn-off module controls the 5G base station to be powered on/off in the idle state;
step 10: maintaining an operation state;
step 11: and circularly executing the operations from the step 2 to the step 10.
Has the advantages that:
1. according to the invention, the performance indexes of 4G/5G can be collected through the northbound interface, the use condition of the air interface resources of each pair of commonly covered 4G/5G cells is analyzed, and the operation action of the 5G cell is finally evaluated, so that the 5G cell enters/leaves a deep sleep state and is powered on/off, the energy consumption of a 5G network is reduced, and the network resources are utilized to the maximum extent.
2. The invention can concern about network security, reduce the impact on the current network and control the flow of the operation cell in each period. Meanwhile, the total number of the cells in the dormant state is controlled, so that user complaints caused by multiple dormant cells are avoided.
3. The invention can dynamically carry out power-on/power-off operation on the 5G cell according to the load condition of the 4G/5G network, finds a balance point between power saving and user perception, and realizes intelligent power saving.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a state diagram of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings.
As shown in fig. 1 and fig. 2, the present invention provides a method for implementing energy saving of a 5G base station through dynamic hard traffic shutdown, which includes the following steps:
the first step is as follows: confirmation of 4G/5G overlay coverage
The 4G base station and the 5G base station are basically constructed in a common station site, and if the common station 4G/5G cells share the same physical antenna, the coverage can be considered to be consistent. The 4G/5G cells for the unshared antennas are evaluated by respective MRs, and if the overlapping coverage is more than 85%, the coverage is considered consistent. The corresponding relation of the 4G/5G co-coverage cell can be obtained through the judgment.
The second step: performance indicator acquisition
The performance index of the 4G/5G cell is obtained through the northbound interface, the performance index comprises the number of users of the 4G cell, the utilization rate of downlink resources of the 4G cell, the utilization rate of uplink resources of the 4G cell, the flow rate of the 4G cell, the number of users of the 5G cell, the utilization rate of downlink resources of the 5G cell, the utilization rate of uplink resources of the 5G cell, the flow rate of the 5G cell and the like, and the statistical period of the performance index is 15 min.
The third step: 4G cell access 5G terminal quantity statistics
When the UE is started and attached to a network or a TAU, the capability information of the UE is reported, and the MME stores the capability information of the UE. The S-TMSI is distributed by MME, and the same MME is not repeated, so that one UE can be uniquely identified. The 5G base station can count the S-TMSI of the current accessed UE, and can know whether the UE is a 5G terminal or not according to the S-TMSI, and can also count the number of 5G terminals accessed under the 4G cell.
At present, operators access 5G terminals under 4G cells in quantity basically according to the realization, and can directly extract the terminals through a northbound interface.
The fourth step: deactivation/activation operation action determination
The collected information enters the process judgment and outputs operation actions (namely entering dormancy, leaving dormancy and keeping). Fig. 1 shows a detailed operation action determination flow, where R/T/I is 3 key parameters involved in a determination process, I denotes a 5G user number threshold, T denotes a delay counter for entering a deactivated state from an activated state, the activated state can only enter a deactivated state from the activated state when T is 0, R denotes a delay counter for entering the activated state from the deactivated state, and the deactivated state can only enter the activated state when R is 0. The main role of R/T is to prevent frequent interoperation.
The fifth step: deactivation/activation operation execution
And operating the base station through the southbound interface and executing corresponding operation actions. Meanwhile, whether the action is executed successfully or not needs to be identified, and the result is written into a state table. The 5G cell is in a dormant state, the analysis result is that the cell enters the dormant state, and the operation action is none because the cell is in the dormant state at present. The 5G cell is in an awakening state, the analysis result is awakening, and the operation action is absent, because the cell is in the awakening state at present.
And a sixth step: power-up/power-down operation determination
As shown in fig. 2, only the cells in the deactivated state (i.e., deep sleep state) can perform a hard shutdown operation, i.e., a power down operation. To prevent frequent operation, the hard-off operation is triggered only if a number of consecutive cycles are dormant. Meanwhile, considering the influence on the perception of 5G users, the hard turn-off operation can be triggered only in 23: 00-06: 00 time periods at night. On the contrary, only when the number of the 5G users is increased suddenly and the 4G base station has high load, the 5G cell power-on operation is triggered. In order to prevent the frequent operation from affecting the life of the AAU, the power-off/power-on operation is performed only once per day in each 5G cell.
The seventh step: platform for transmitting power-on/power-off command to Internet of things
The power-saving platform and the Internet of things platform adopt RESTful interfaces, https is used for transmitting power-on/power-off commands, and the Internet of things platform feeds back whether the commands are executed successfully or not.
The eighth step: internet of things platform forwards command to hard turn-off module
The platform of the Internet of things forwards a power-on/power-off command to the hard turn-off module, and the hard turn-off module controls the 5G cell to be powered on/off in the air.
The ninth step: the hard turn-off module controls the 5G base station to be powered on/off in the idle state;
the hard turn-off module controls the 5G base station to power on/off in the idle state and feeds back the power-on/off result.
The tenth step: operational status maintenance
The current state (i.e., active state, dormant state, off state) of the 5G cell needs to be maintained, because state inconsistency may occur, and if the state inconsistency is found, correction needs to be performed in time.
When a plurality of persons in the 5G network are maintaining at the same time, the power saving platform may cause the 5G cell to enter a sleep state, but when other users wake up manually, the actual state of the 5G cell may be inconsistent with the cell state maintained by the power saving platform, and the state needs to be corrected. The method is the simplest and the most effective method for sending commands to the 5G cell through the southbound interface to inquire the state of the cell, but the scheme can increase the load of the southbound interface and has great influence on the existing network.
The eleventh step: the step of circulating for 15 minutes is the minimum performance index acquisition period, the platform takes 15 minutes as 1 period, and each period circularly executes the first step to the tenth step.
A twelfth step: presentation of results
The number of the participating power-saving cells is presented, and the number of the cells in a deep sleep state/off state is presented currently; the electricity-saving time of each cell per day, the whole electricity-saving time and the like are presented; the platform operation state is mainly the monitoring of various alarms.
The main core contents of the invention include 5G cell entering/leaving deep sleep state algorithm realization, 5G commercial network safety prevention mechanism realization, 5G cell state maintenance/correction, performance index extraction analysis realization and the like.
The invention has the advantages of safe network, reduced impact on the current network and flow control on the operation cells in each period. Meanwhile, the total number of the cells in the dormant state is controlled, so that the problem of complaints of users caused by multiple dormant cells is avoided.
The method comprises the steps of platform running state monitoring, northbound interface, southbound interface and core program running state monitoring, operation delay high alarm, state inconsistency alarm, block ratio alarm and the like.
It should be understood that the above description of specific embodiments is not intended to limit the invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for realizing energy saving of a 5G base station by traffic dynamic hard shutdown is characterized by comprising the following steps:
step 1: confirming the 4G/5G overlapping coverage;
and 2, step: acquiring a performance index, namely acquiring the performance index of the 4G/5G base station through a northbound interface;
and step 3: identifying the number of 5G terminals accessed to the 4G base station;
and 4, step 4: 5G, judging cell operation action;
and 5: 5G cell operation action is issued;
step 6: 5G, judging power-on/power-off of the cell;
and 7: the power-on/power-off command is transmitted to the Internet of things platform;
and 8: the Internet of things platform forwards the command to the hard turn-off module;
and step 9: the hard turn-off module controls the 5G base station to be powered on/off in the idle state;
step 10: maintaining an operation state;
step 11: and circularly executing the operations from the step 2 to the step 10.
2. The method of claim 1, wherein the step 2 comprises: the performance index of the 4G/5G cell is obtained through the northbound interface, the performance index comprises the number of users of the 4G cell, the utilization rate of downlink resources of the 4G cell, the utilization rate of uplink resources of the 4G cell, the flow rate of the 4G cell, the number of users of the 5G cell, the utilization rate of downlink resources of the 5G cell, the utilization rate of uplink resources of the 5G cell and the flow rate of the 5G cell, and the statistical period of the performance index is 15 min.
3. The method for implementing energy saving of 5G base station by traffic dynamic hard shutdown as claimed in claim 1, wherein the step 3 comprises: when the UE is started and attached to a network or a TAU, the UE capacity information can be reported, the MME can store the UE capacity information, the S-TMSI is distributed by the MME and is not repeated in the same MME, one UE can be uniquely identified, the 5G base station can count the S-TMSI of the currently accessed UE, and the 5G base station can know whether the UE is a 5G terminal or not according to the S-TMSI, namely count the number of 5G terminals accessed under a 4G cell.
4. The method for implementing energy saving of 5G base station by traffic dynamic hard shutdown as claimed in claim 1, wherein the step 4 comprises: the method comprises the steps of judging the entering of collected information into a process, and outputting operation actions (namely, entering sleep, leaving sleep and keeping), wherein R/T/I is 3 key parameters related in the judging process, I represents a 5G user number threshold, T represents a delay counter for entering a deactivation state from an activation state, the activation state can enter the deactivation state from the activation state when T is 0, R represents a delay counter for entering the activation state from the deactivation state, the deactivation state can enter the activation state from the deactivation state when R is 0, and the main function of R/T is to prevent frequent interoperation.
5. The method for implementing energy saving of 5G base station by traffic dynamic hard shutdown as claimed in claim 1, wherein the step 5 comprises: and operating the base station through the southbound interface, executing corresponding operation actions, identifying whether the actions are successfully executed or not, writing results into a state table, wherein the 5G cell is in a dormant state, the analysis result is to enter the dormant state, the operation action is absent because the cell is in the dormant state at present, the 5G cell is in an awakening state, the analysis result is to be awakened, and the operation action is absent because the cell is in the awakening state at present.
6. The method for implementing energy saving of 5G base station by traffic dynamic hard shutdown as claimed in claim 1, wherein the step 6 comprises: the method comprises the steps that only cells in a deactivation state (namely, a deep sleep state) can be subjected to hard turn-off operation, namely power-off operation, in order to prevent frequent operation, the hard turn-off operation is triggered only when a plurality of continuous periods are in the sleep state, meanwhile, the hard turn-off operation can be triggered only in 23: 00-06: 00 hours at night in consideration of the perception influence on 5G users, otherwise, the 5G cells can be triggered to be powered on only when the number of the 5G users is increased suddenly and high load occurs in a 4G base station, and in order to prevent the frequent operation from influencing the service life of an AAU, each 5G cell only carries out power-off/power-on operation once every day.
7. The method of claim 1, wherein the step 7 comprises: the power-saving platform and the Internet of things platform adopt RESTful interfaces, https is used for transmitting power-on/power-off commands, and the Internet of things platform feeds back whether the commands are executed successfully or not.
8. The method of claim 1, wherein the step 8 comprises: the platform of the Internet of things forwards a power-on/power-off command to the hard turn-off module, and the hard turn-off module controls the 5G cell to be powered on/off in the air.
9. The method of claim 1, wherein the step 9 comprises: the hard turn-off module controls the 5G base station to power on/off in the idle state and feeds back the power-on/off result.
10. The method of claim 1, wherein the step 10 comprises: the current state (i.e., active state, dormant state, off state) of the 5G cell needs to be maintained, because state inconsistency may occur, and if the state inconsistency is found, correction needs to be performed in time.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115190569A (en) * | 2022-06-13 | 2022-10-14 | 浪潮通信信息系统有限公司 | Cell turn-off power-saving method and system based on same-coverage learning |
| CN115361668A (en) * | 2022-10-17 | 2022-11-18 | 合肥本源物联网科技有限公司 | 4G and 5G mixed unloading method based on edge calculation under scene of Internet of vehicles |
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