CN115190569A - Cell turn-off power-saving method and system based on same-coverage learning - Google Patents
Cell turn-off power-saving method and system based on same-coverage learning Download PDFInfo
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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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- 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 cell turn-off power-saving method and system based on same-coverage learning, belongs to the technical field of base station energy conservation, and aims to solve the technical problem of how to realize the turn-off energy conservation of a cell under the condition of avoiding the congestion of an adjacent cell. The method comprises the following steps: in the pilot frequency same-coverage networking, a cell corresponding to a frequency point serving as a basic coverage purpose is defined as a basic cell, a cell corresponding to a frequency point serving as a cell capacity improving purpose is defined as a capacity cell, and the basic cell is configured as a basic adjacent cell of the capacity cell; performing same-coverage learning on the capacity cell and the basic adjacent cell thereof, and identifying the same-coverage adjacent cell of the capacity cell; judging whether the capacity cell meets the same-coverage shutdown entry condition, if so, executing a shutdown process on the capacity cell, and shutting down the same-coverage carrier frequency; judging whether the capacity cell meets the same-coverage shutdown exit condition, if so, exiting the capacity cell from the shutdown mode, turning on the shutdown carrier frequency, and informing the adjacent base station and the adjacent cell.
Description
Technical Field
The invention relates to the technical field of base station energy conservation, in particular to a cell turn-off electricity-saving method and system based on same-coverage learning.
Background
With the rapid development of the communication industry in recent years, the network scale of communication operators is gradually enlarged, the number of various communication devices is also increased year by year, and the demand of electric power energy required by the network devices is also increased. The base station is bound to save energy and reduce consumption. The main parts of the base station energy consumption are a radio frequency unit and a baseband unit, wherein the radio frequency unit consumes the most energy. At present, two advanced energy-saving schemes with small influence on network quality are symbol turn-off and intelligent turn-off of a radio frequency channel respectively.
The intelligent turn-off of the radio frequency channel means that no service exists in a certain cell or the service load is low, and when the current cell enters a certain set time period, part of transmitting channels of the cell are turned off so as to save energy consumption. The symbol turn-off energy saving means that the eNodeB turns off the power amplifier in a symbol period without data transmission, thereby reducing the power consumption of the system. In a sub-frame of a cell, an eNodeB dynamically detects which symbols have no data to transmit, and closes a power amplifier in a Symbol period in which no data is transmitted.
The current scheme does not consider the load condition of the adjacent cell after symbol switching-off and radio frequency switching-off, which is easy to cause the congestion of the adjacent cell.
How to achieve the energy saving of the switch-off of the cell under the condition of avoiding the congestion of the adjacent cell.
Disclosure of Invention
The technical task of the invention is to provide a cell turn-off power-saving method and system based on same-coverage learning to solve the technical problem of how to realize the turn-off power saving of cells under the condition of avoiding the congestion of adjacent cells.
In a first aspect, the invention provides a cell turn-off power saving method based on same coverage learning, which comprises the following steps:
in the pilot frequency same-coverage networking, a cell corresponding to a frequency point serving as a basic coverage purpose is defined as a basic cell, a cell corresponding to a frequency point serving as a cell capacity improving purpose is defined as a capacity cell, and the basic cell is configured as a basic adjacent cell of the capacity cell;
performing same-coverage learning on the capacity cell and the basic neighbor cell thereof in a mode of periodically performing different-frequency MR measurement on the capacity cell and the basic neighbor cell thereof, and identifying the same-coverage neighbor cell of the capacity cell;
when the same-coverage neighbor cell exists in the capacity cell, judging whether the capacity cell meets the same-coverage shutdown entry condition, if so, executing a shutdown process on the capacity cell, and enabling the capacity cell to enter a shutdown mode and shutdown the same-coverage carrier frequency;
and for the switched-off capacity cell, judging whether the capacity cell meets the same-coverage switch-off exit condition, if so, exiting the capacity cell from the switch-off mode, opening the switched-off carrier frequency, and informing the adjacent base station and the adjacent cell.
Preferably, the inter-frequency MR measurement is periodically performed on the capacity cell and the basic neighboring cell, the same-coverage neighboring cells of the capacity cell are identified, and for each period, the following operations are performed:
randomly selecting users in the capacity cell, and issuing measurement control to the pilot frequency points of all basic cells and non-carrier frequency off cells of the capacity cell;
judging whether the effective measurement report received by the base station in the period is larger than or equal to a preset value,
if so, stopping the different-frequency MR measurement, calculating the overlapping coverage proportion of the capacity cell and each basic adjacent cell and the coverage hole proportion caused by switching off the capacity cell, and taking the basic cell with the overlapping coverage proportion meeting a threshold value with the capacity cell as the same-coverage basic adjacent cell of the capacity cell;
if not, the effective measurement report received in the current period is discarded, and the next period is executed.
Preferably, the overlapping coverage ratio of the capacity cell to the basic neighboring cell = the number of times of measurement to the basic neighboring cell/the number of times of measurement control distribution of the frequency point to which the basic neighboring cell belongs;
the coverage hole ratio = the number of times that no neighbor cell is detected in any basic cell and non-carrier frequency turn-off cell/the total effective measurement control issuing number of times of the capacity cell.
Preferably, the same coverage shutdown entry condition includes the following conditions:
the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start uplink threshold of the same-coverage carrier of the cell, and the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start downlink threshold of the same-coverage carrier of the cell;
the coverage hole ratio possibly caused by switching off the capacity cell is less than or equal to a threshold value;
for LTE FDD, the cell is not in a trigger state of a low power consumption mode and a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
at least one same-coverage basic adjacent cell is provided, and all the same-coverage basic adjacent cells can be used;
and if the capacity cell simultaneously meets the conditions, judging that the capacity cell meets the same-coverage shutdown entry condition.
Preferably, the shutdown procedure is executed for the capacity cell, and includes the following operations:
after the capacity cell meets the same-coverage shutdown entry condition, if the number of the current connected state users of the capacity cell is 0, directly blocking the cell, and informing an adjacent base station and an adjacent cell; if the current connected-state user number of the capacity cell is not 0, the base station executes the following actions:
and broadcasting the cell in a Barred access (Barred) state through an SIB1 message. Meanwhile, the adjacent base station is informed through an X2 port, so that other cells are prevented from initiating switching to the cell, and a new user is forbidden to access after Barred indication takes effect;
prohibiting configuring the cell as an auxiliary cell, and deleting the configuration of the auxiliary cell by a CA user taking the cell as the auxiliary cell;
trying to switch all users on the cell to the same-coverage basic neighboring cell within a preset time T, if the users cannot be switched away completely and cannot enter forced turn-off, removing the access prohibition state, informing all neighboring base stations that the cell exits the energy-saving state through an X2 port, and re-detecting the trigger condition after the punishment time is over;
and during the preset time T, checking the number of users of the cell once per period T, and after the preset time T is finished, if the number of connected users of the cell is less than or equal to a forced turn-off user number threshold and no user with QCI of 1 exists, closing the carrier frequency of the cell and blocking the cell.
Preferably, the same coverage shutdown exit condition includes the following conditions:
the uplink PRB utilization rate of the same-coverage basic adjacent cell is higher than the intelligent turn-off exit uplink threshold of the same-coverage carrier of the capacity cell;
the utilization rate of the same-coverage basic adjacent cell downlink PRB is higher than the intelligent shutdown exit downlink threshold of the same-coverage carrier of the capacity cell;
ending a time period of same covering carrier frequency switching-off, wherein the time period comprises a starting time to an ending time;
the same-coverage basic adjacent cell is unavailable;
resetting a capacity cell;
and for the switched-off capacity cell, if the capacity cell meets any one of the above conditions, judging that the capacity cell meets the same-coverage switch-off exit condition.
In a second aspect, the present invention provides a cell turn-off power saving system based on same coverage learning, configured to perform turn-off power saving control on a cell by using a cell turn-off power saving method based on same coverage learning as described in any one of the first aspects, where the system includes:
a cell configuration module, configured to define, in a pilot frequency same coverage network, a cell corresponding to a frequency point serving as a basic coverage target as a basic cell, define a cell corresponding to a frequency point serving as a cell capacity increasing target as a capacity cell, and configure the basic cell as a basic neighboring cell of the capacity cell;
the same-coverage learning module is used for performing same-coverage learning on the capacity cell and the basic neighboring cell thereof in a mode of periodically performing different-frequency MR measurement on the capacity cell and the basic neighboring cell thereof, and identifying the same-coverage neighboring cell of the capacity cell;
the cell switching-off and starting module is used for judging whether the capacity cell meets the same-coverage switching-off entering condition or not when the capacity cell has the same-coverage neighbor cell, and if the capacity cell meets the same-coverage switching-off entering condition, the cell switching-off and starting module is used for executing a switching-off process on the capacity cell, and the capacity cell enters a switching-off mode and switches off the same-coverage carrier frequency; and for the switched-off capacity cell, the cell switching-off and starting module is used for judging whether the capacity cell meets the same-coverage switching-off exit condition, and if so, the cell switching-off and starting module is used for exiting the capacity cell from the switching-off mode, switching on the switched-off carrier frequency and informing the adjacent base station and the adjacent cell.
Preferably, the same-coverage learning module is configured to periodically perform inter-frequency MR measurement on the capacity cell and the basic neighboring cell, identify a same-coverage neighboring cell of the capacity cell, and for each period, the same-coverage learning module is configured to perform the following operations:
randomly selecting users in the capacity cell, and issuing measurement control to the pilot frequency points of all basic cells and non-carrier frequency off cells of the capacity cell;
judging whether the effective measurement report received by the base station in the period is larger than or equal to a preset value,
if so, stopping the different-frequency MR measurement, calculating the overlapping coverage proportion of the capacity cell and each basic adjacent cell and the coverage hole proportion caused by switching off the capacity cell, and taking the basic cell with the overlapping coverage proportion meeting a threshold value with the capacity cell as the same-coverage basic adjacent cell of the capacity cell;
if not, discarding the effective measurement report received in the current period, and executing the next period;
the overlapping coverage ratio of the capacity cell and the basic adjacent cell = the number of times of measuring to the basic adjacent cell/the number of times of measurement control distribution of the frequency point to which the basic adjacent cell belongs
The coverage hole ratio = the number of times that no neighbor cell is detected in any basic cell and non-carrier frequency turn-off cell/the total effective measurement control issuing number of times of the capacity cell.
Preferably, the same coverage shutdown entry condition includes the following conditions:
the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start uplink threshold of the same-coverage carrier of the cell, and the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start downlink threshold of the same-coverage carrier of the cell;
the coverage hole ratio possibly caused by switching off the capacity cell is less than or equal to a threshold value;
for LTE FDD, the cell is not in a trigger state of a low power consumption mode and a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
at least one same-coverage basic adjacent cell is available;
if the capacity cell meets the above conditions at the same time, judging that the capacity cell meets the same-coverage turn-off entry condition;
the cell switching-off and starting module is used for executing a switching-off process on the capacity cell by executing the following operations:
after the capacity cell meets the same-coverage shutdown entry condition, if the number of the current connected state users of the capacity cell is 0, directly blocking the cell, and informing an adjacent base station and an adjacent cell; if the current connected-state user number of the capacity cell is not 0, the base station executes the following actions:
and broadcasting the cell in a Barred access (Barred) state through an SIB1 message. Meanwhile, the adjacent base station is informed through the X2 port, so that other cells are prevented from initiating switching to the cell, and a new user is forbidden to access after Barred indication takes effect;
prohibiting configuring the cell as an auxiliary cell, and deleting the configuration of the auxiliary cell by a CA user taking the cell as the auxiliary cell;
trying to switch all users on the cell to the same-coverage basic neighboring cell within a preset time T, if the users cannot be switched away completely and cannot enter forced turn-off, removing the access prohibition state, informing all neighboring base stations that the cell exits the energy-saving state through an X2 port, and re-detecting the trigger condition after the punishment time is over;
and during the preset time T, checking the number of users of the cell once per period T, and after the preset time T is finished, if the number of connected users of the cell is less than or equal to a forced turn-off user number threshold and no user with QCI of 1 exists, closing the carrier frequency of the cell and blocking the cell.
Preferably, the same coverage shutdown entry condition includes the following conditions:
the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start uplink threshold of the same-coverage carrier of the cell, and the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start downlink threshold of the same-coverage carrier of the cell;
the coverage hole ratio possibly caused by switching off the capacity cell is less than or equal to a threshold value;
for LTE FDD, the cell is not in a trigger state of a low power consumption mode and a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
at least one same-coverage basic adjacent cell is available;
and if the capacity cell simultaneously meets the conditions, judging that the capacity cell meets the same-coverage shutdown entry condition.
The cell power-off and saving method and the system based on same-coverage learning have the following advantages that:
1. identifying the same-coverage basic neighbor cells by utilizing the common-coverage cell identification, and executing and shutting down cell shutdown based on a preset same-coverage shutdown entry condition and a preset same-coverage shutdown exit condition, so that the condition that the neighbor cells are congested due to capacity cell shutdown is avoided;
2. in the same-coverage shutdown entry condition and the same-coverage shutdown exit condition, the execution and shutdown of cell shutdown are carried out in an all-around manner by associating the multi-dimensional data with the PRB utilization rate, the coverage hole proportion and other conditions, so that the influence on the network is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a cell power-off method based on same coverage learning in embodiment 1.
Detailed Description
The present invention is further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not intended to limit the present invention, and the embodiments and technical features of the embodiments can be combined with each other without conflict.
The embodiment of the invention provides a cell power-off and saving method and a cell power-off and saving system based on same-coverage learning, which are used for solving the technical problem of realizing the power-off and saving of cells under the condition of avoiding congestion of adjacent cells.
Example 1:
the invention relates to a cell turn-off power-saving method based on same-coverage learning, which comprises the following steps:
s100, in the pilot frequency same-coverage networking, defining a cell corresponding to a frequency point serving as a basic coverage purpose as a basic cell, defining a cell corresponding to a frequency point serving as a cell capacity improving purpose as a capacity cell, and configuring the basic cell as a basic adjacent cell of the capacity cell;
s200, performing same coverage learning on the capacity cell and the basic adjacent cell thereof in a mode of periodically performing different-frequency MR measurement on the capacity cell and the basic adjacent cell thereof, and identifying the same coverage adjacent cell of the capacity cell;
s300, when the same-coverage adjacent area exists in the capacity cell, judging whether the capacity cell meets the same-coverage shutdown entry condition, if so, executing a shutdown process on the capacity cell, and enabling the capacity cell to enter a shutdown mode and shutdown the same-coverage carrier frequency;
and for the switched-off capacity cell, judging whether the capacity cell meets the same-coverage switch-off exit condition, if so, exiting the capacity cell from the switch-off mode, opening the switched-off carrier frequency, and informing the adjacent base station and the adjacent cell.
In this embodiment, the capacity cell is generally a high frequency band cell, and may be turned off when the network is under low load. In order to enable users of the capacity cell to be smoothly switched to the basic cell, the basic cell needs to be configured as an adjacent cell of the capacity cell.
Step S200, carrying out different frequency MR measurement on the capacity cell and the basic adjacent cell periodically, identifying the same-coverage adjacent cell of the capacity cell, and executing the following operations for each period:
(1) Randomly selecting users in a capacity cell, issuing measurement control to pilot frequency points where all basic cells and non-carrier frequency turn-off cells of the capacity cell are located, selecting one user every 30s, and avoiding high-priority users when selecting the users;
(2) Performing same coverage learning, if the number of effective measurement reports received by the base station is more than or equal to 1000 in the period (one week), stopping different-frequency MR measurement, calculating the overlapping coverage proportion of the capacity cell and each basic adjacent cell and the coverage hole proportion caused by turning off the capacity cell, and taking the basic cell of which the overlapping coverage proportion with the capacity cell meets a threshold value as the same-coverage basic adjacent cell of the capacity cell;
and if the number of the received effective measurement reports is less than 1000, the base station considers that the learning fails, when the next learning period starts, the learning is restarted, and the measurement report samples collected in the previous learning period are discarded.
And after the calculation of the overlapping coverage proportion of all the basic adjacent cells is finished, considering that the same-coverage learning is successful, and starting the learning when the next learning period comes.
In this embodiment, the overlapping coverage ratio of the capacity cell and the basic neighboring cell = the number of times of measurement to the basic neighboring cell/the number of times of measurement control distribution of the frequency point to which the basic neighboring cell belongs
The coverage hole ratio caused by switching off the capacity cell = the number of times that no neighbor cell is detected in any basic cell and non-carrier frequency switching off cell/the total effective measurement control issuing number of times of the capacity cell.
Step S300, when the same coverage basic neighboring cell exists in the capacity cell, determines whether the same coverage shutdown entry condition is satisfied, and if the same coverage basic neighboring cell satisfies the entry condition, performs a shutdown procedure on the capacity cell. And for the switched-off capacity cell, judging whether the same-coverage switching-off exit condition is met, and exiting the cell switching-off process when the exit condition is met.
As a specific implementation, if the learning result is that there is a same-coverage basic neighboring cell, the base station periodically determines whether the capacity cell simultaneously satisfies the following same-coverage entry condition within the time period of same-coverage carrier frequency turn-off, and enters a same-coverage carrier frequency turn-off mode when the following conditions are satisfied:
(1) The cell and all the same-coverage basic adjacent cells thereof simultaneously meet the following conditions: the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell is less than an intelligent turn-off and start uplink threshold (the uplink PRB threshold is 70 percent) of the same-coverage carrier of the cell; the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell is less than an intelligent turn-off and start-up downlink threshold (the downlink PRB threshold is 70%) of the same-coverage carrier of the cell; the number of connected users in the cell is less than 10;
(2) The coverage hole proportion < =10% which may be caused by switching off the capacity cell;
(3) For LTE FDD, the cell is not in a trigger state of a low power consumption mode and a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
(4) There is at least one same-coverage basic neighboring cell, and all the same-coverage basic neighboring cells are available.
The turn-off process comprises the following steps: and after the base station detects that the common coverage shutdown entry condition is met, if the number of the current connection state users of the capacity cell is 0, directly blocking the cell and informing the adjacent base station and the adjacent cell. If the current connected-state user number of the capacity cell is not 0, the base station executes the following actions:
(1) And broadcasting the cell in a Barred access (Barred) state through an SIB1 message. Meanwhile, the adjacent base station is informed through an X2 port, so that other cells are prevented from initiating switching to the cell, and a new user is forbidden to access after Barred indication takes effect;
(2) Prohibiting configuring the cell as an auxiliary cell, and deleting the configuration of the auxiliary cell by a CA user taking the cell as the auxiliary cell;
(3) And trying to switch all users on the cell to the same-coverage basic neighboring cell within 60s, if all users cannot be switched away and cannot enter forced turn-off, removing a Barred access (Barred) state, and informing all neighboring base stations that the cell exits an energy-saving state through an X2 port. Detecting the trigger condition again after the punishment time is over;
(4) The number of users of the own cell is checked every 5s during 60 s. After 60s, if the number of connected users in the cell is less than or equal to the number threshold of forced turn-off users and no user with a QCI of 1 exists, closing the carrier frequency of the cell and blocking the cell.
The same-coverage shutdown exit condition comprises the following conditions:
(1) The uplink PRB utilization rate of the same-coverage basic adjacent cell is higher than the intelligent shutdown exit uplink threshold (the uplink PRB threshold is 70% + the uplink PRB offset) of the same-coverage carrier of the capacity cell;
(2) The utilization rate of the downlink PRB of the same-coverage basic adjacent cell is higher than the intelligent shutdown exit downlink threshold (70% of the downlink PRB threshold + the downlink PRB offset) of the same-coverage carrier of the capacity cell;
(3) The time period (starting time and ending time) for turning off the same covering carrier frequency is ended;
(4) The same-coverage basic adjacent cell is unavailable;
(5) And resetting the capacity cell.
When any one of the conditions is met, the base station exits the common coverage automatic identification cell turn-off mode, turns on the turned-off carrier frequency, and informs the adjacent base station and the adjacent cell:
according to the method, in a pilot frequency and same coverage scene, the pilot frequency and same coverage relation between the capacity layer cell and the basic cell is automatically identified through pilot frequency MR-based same coverage deep learning and training. And at low load, the capacity cell is moved to a same-coverage basic cell allowed by the load, and then the capacity cell is switched off so as to save the power consumption of the base station.
Example 2:
the invention discloses a community turn-off electricity-saving system based on same-coverage learning, which comprises a community configuration module, a same-coverage learning module and a community turn-off and start module, and the system performs turn-off electricity-saving control on a community through a community turn-off electricity-saving method based on same-coverage learning disclosed by embodiment 1.
The cell configuration module is used for defining a cell corresponding to a frequency point serving as a basic coverage purpose as a basic cell, defining a cell corresponding to a frequency point serving as a cell capacity improving purpose as a capacity cell and configuring the basic cell as a basic adjacent cell of the capacity cell in the pilot frequency same-coverage networking.
The same-coverage learning module is used for performing same-coverage learning on the capacity cell and the basic adjacent cell thereof in a mode of periodically performing different-frequency MR measurement on the capacity cell and the basic adjacent cell thereof, and identifying the same-coverage adjacent cell of the capacity cell.
When the same-coverage neighbor cell exists in the capacity cell, the cell switching-off and starting module is used for judging whether the capacity cell meets the same-coverage switching-off entering condition or not, if so, the cell switching-off and starting module is used for executing a switching-off process on the capacity cell, and the capacity cell enters a switching-off mode and switches off the same-coverage carrier frequency; and for the switched-off capacity cell, the cell switching-off and starting module is used for judging whether the capacity cell meets the same-coverage switching-off exit condition, and if so, the cell switching-off and starting module is used for exiting the capacity cell from the switching-off mode, switching on the switched-off carrier frequency and informing the adjacent base station and the adjacent cell.
The capacity cell is typically a high band cell and may be turned off when the network is under low load. In order to enable users of the capacity cell to be smoothly switched to the basic cell, the basic cell needs to be configured as a neighboring cell of the capacity cell.
The same-coverage learning module is used for periodically performing different-frequency MR measurement on the capacity cell and the basic adjacent cell, identifying the same-coverage adjacent cell of the capacity cell, and for each period, the same-coverage school module is used for executing the following operations:
(1) Randomly selecting users in a capacity cell, sending measurement control to pilot frequency points where all basic cells and non-carrier frequency turn-off cells of the capacity cell are located, selecting one user every 30s, and avoiding high-priority users when selecting the users;
(2) Executing same-coverage learning, if the number of effective measurement reports received by the base station is more than or equal to 1000 in the learning period (one week), stopping different-frequency MR measurement, calculating the overlapping coverage proportion of the capacity cell and each basic adjacent cell and the coverage hole proportion caused by turning off the capacity cell, and taking the basic cell of which the overlapping coverage proportion with the capacity cell meets a threshold value as the same-coverage basic adjacent cell of the capacity cell;
and if the number of the effective measurement reports received by the base station is less than 1000, the learning is considered to be failed, when the next learning period starts, the learning is restarted, and the measurement report samples collected in the previous learning period are discarded.
For the same-coverage school module, after the calculation of the overlapping coverage proportion of all the basic adjacent cells is completed, the same-coverage learning is considered to be successful, and the learning is started when the next learning period comes.
The overlapping coverage proportion of the capacity cell and the basic adjacent cell = the number of times of measuring the basic adjacent cell/the number of times of measuring and controlling the distribution of the frequency point to which the basic adjacent cell belongs;
the coverage hole ratio = the number of times that no neighbor cell is detected in any basic cell and non-carrier frequency turn-off cell/the total effective measurement control issuing number of times of the capacity cell.
When the same coverage basic neighbor cell exists in the capacity cell, the cell turn-off and start module is used for judging whether the cell meets the same coverage turn-off entering condition or not, and if so, the cell turn-off and start module is used for executing a turn-off process; and for the switched-off capacity cell, the cell switching-off and starting module is used for judging whether the capacity cell meets the same-coverage switching-off exit condition, and when the exit condition is met, the cell switching-off and starting module is used for exiting the cell switching-off process.
In the cell shutdown and start module, the same coverage shutdown entry condition includes the following conditions:
(1) The cell and all the same-coverage basic neighbor cells simultaneously meet the following conditions that the uplink PRB utilization rate of the cell and the uplink PRB utilization rate of the same-coverage basic neighbor cells are less than the intelligent turn-off and turn-on uplink threshold (uplink PRB threshold: 70%) of the same-coverage carrier of the cell; the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell is less than the intelligent turn-off and start-up downlink threshold (the downlink PRB threshold is 70%) of the same-coverage carrier of the cell; the number of connected state users in the cell is less than 10;
(2) The coverage hole proportion < =10% which can be caused by switching off the capacity cell;
(3) For LTE FDD, the cell is not in a trigger state of a low power consumption mode and a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
(4) There is at least one same-coverage basic neighboring cell, and all the same-coverage basic neighboring cells are available.
If the same-coverage basic neighboring cell exists in the capacity cell, the cell turn-off and start module is used for executing the following steps: the base station periodically judges whether the capacity cell meets the entry conditions at the same time in the time period of same-coverage carrier frequency turn-off, and when all the entry conditions are met at the same time, the cell turn-off and start module is used for executing a turn-off process.
The turn-off process comprises the following steps: after detecting that the common coverage shutdown entry condition is met, if the number of the current connected state users of the capacity cell is 0, the base station directly blocks the cell and informs an adjacent base station and an adjacent cell; if the current connected-state user number of the capacity cell is not 0, the base station executes the following actions:
(1) And broadcasting the cell in a Barred access (Barred) state through an SIB1 message. Meanwhile, the adjacent base station is informed through an X2 port, so that other cells are prevented from initiating switching to the cell, and a new user is forbidden to access after Barred indication takes effect;
(2) Prohibiting configuring the cell as an auxiliary cell, and deleting the configuration of the auxiliary cell by a CA user taking the cell as the auxiliary cell;
(3) And trying to switch all users on the cell to the same-coverage basic neighboring cell within 60s, if all users cannot be switched away and cannot enter forced turn-off, removing a Barred access (Barred) state, and informing all neighboring base stations that the cell exits an energy-saving state through an X2 port. Detecting the trigger condition again after the punishment time is over;
(4) The number of users of the own cell is checked every 5s during 60 s. And after 60s, if the number of connected users in the cell is less than or equal to the number threshold of forced turn-off users and no user with QCI of 1 exists, closing the carrier frequency of the cell and blocking the cell.
In the cell shutdown and startup module, the same-coverage shutdown exit condition includes the following conditions:
(1) The uplink PRB utilization rate of the same-coverage basic neighbor cell is higher than the intelligent shutdown exit uplink threshold (the uplink PRB threshold is 70% + the uplink PRB offset) of the same-coverage carrier of the capacity cell;
(2) The utilization rate of the downlink PRB of the same-coverage basic adjacent cell is higher than the intelligent shutdown exit downlink threshold (70% of the downlink PRB threshold + the downlink PRB offset) of the same-coverage carrier of the capacity cell;
(3) The time period (starting time and ending time) for turning off the same covering carrier frequency is ended;
(4) The same-coverage basic adjacent cell is unavailable;
(5) And resetting the capacity cell.
For a capacity cell that is turned off, the cell turn-off and start-up module is configured to perform the following: and judging whether the same-coverage shutdown exit condition is met or not, and when any condition is met, the base station exits the shutdown process, turns on the closed carrier frequency and informs the adjacent base station and the adjacent cell.
By the system of the embodiment, in a pilot frequency same-coverage scene, the pilot frequency same-coverage relation between the capacity layer cell and the basic cell is automatically identified through pilot frequency MR-based same-coverage deep learning and training. And at low load, the capacity cell is migrated to the same coverage basic cell allowed by the load, and then the capacity cell is switched off so as to save the power consumption of the base station.
While the invention has been particularly shown and described with reference to the preferred embodiments and drawings, it will be understood by those skilled in the art that the present invention is not limited to the embodiments disclosed, but rather that various other embodiments may be devised in combination with the embodiments and examples set forth herein and within the scope of the invention.
Claims (10)
1. A cell power-off and power-saving method based on same-coverage learning is characterized by comprising the following steps:
in the pilot frequency same-coverage networking, a cell corresponding to a frequency point serving as a basic coverage purpose is defined as a basic cell, a cell corresponding to a frequency point serving as a cell capacity improving purpose is defined as a capacity cell, and the basic cell is configured as a basic adjacent cell of the capacity cell;
performing same-coverage learning on the capacity cell and the basic neighbor cell thereof in a mode of periodically performing different-frequency MR measurement on the capacity cell and the basic neighbor cell thereof, and identifying the same-coverage neighbor cell of the capacity cell;
when the same-coverage neighbor cell exists in the capacity cell, judging whether the capacity cell meets the same-coverage shutdown entry condition, if so, executing a shutdown process on the capacity cell, and enabling the capacity cell to enter a shutdown mode and shutdown the same-coverage carrier frequency;
and for the switched-off capacity cell, judging whether the capacity cell meets the same-coverage switch-off exit condition, if so, exiting the capacity cell from the switch-off mode, turning on the switched-off carrier frequency, and informing the adjacent base station and the adjacent cell.
2. The cell turn-off power saving method based on same-coverage learning of claim 1, wherein the inter-frequency MR measurement is periodically performed on the capacity cell and the basic neighboring cell, the same-coverage neighboring cell of the capacity cell is identified, and for each period, the following operations are performed:
randomly selecting users in the capacity cell, and issuing measurement control to the pilot frequency points of all basic cells and non-carrier frequency off cells of the capacity cell;
judging whether the effective measurement report received by the base station in the period is larger than or equal to a preset value,
if so, stopping the different-frequency MR measurement, calculating the overlapping coverage proportion of the capacity cell and each basic adjacent cell and the coverage hole proportion caused by switching off the capacity cell, and taking the basic cell with the overlapping coverage proportion meeting a threshold value with the capacity cell as the same-coverage basic adjacent cell of the capacity cell;
if not, the effective measurement report received in the current period is discarded, and the next period is executed.
3. The cell turn-off power saving method based on same coverage learning of claim 2, wherein the overlapping coverage ratio of the capacity cell and the basic neighboring cell = number of times of measuring to the basic neighboring cell/number of times of measurement control issue of frequency point to which the basic neighboring cell belongs;
the coverage hole ratio caused by switching off the capacity cell = the number of times that no neighbor cell is detected in any basic cell and non-carrier frequency switching off cell/the total effective measurement control issuing number of times of the capacity cell.
4. The cell power-off method based on same-coverage learning according to claim 2 or 3, wherein the same-coverage power-off entering condition comprises the following conditions:
the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start uplink threshold of the same-coverage carrier of the cell, and the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start downlink threshold of the same-coverage carrier of the cell;
the coverage hole ratio possibly caused by switching off the capacity cell is less than or equal to a threshold value;
for LTE FDD, the cell is not in a trigger state of a low power consumption mode and a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
at least one same-coverage basic adjacent cell is provided, and all the same-coverage basic adjacent cells can be used;
and if the capacity cell simultaneously meets the conditions, judging that the capacity cell meets the same-coverage shutdown entry condition.
5. The cell turn-off power saving method based on co-coverage learning of claim 2 or 3, wherein the turn-off process is performed on the capacity cell, and comprises the following operations:
after the capacity cell meets the same-coverage shutdown entry condition, if the number of the current connected state users of the capacity cell is 0, directly blocking the cell, and informing an adjacent base station and an adjacent cell; if the current connected-state user number of the capacity cell is not 0, the base station executes the following actions:
and broadcasting the cell in a Barred access (Barred) state through an SIB1 message. Meanwhile, the adjacent base station is informed through an X2 port, so that other cells are prevented from initiating switching to the cell, and a new user is forbidden to access after Barred indication takes effect;
prohibiting configuring the cell as an auxiliary cell, and deleting the configuration of the auxiliary cell by a CA user taking the cell as the auxiliary cell;
trying to switch all users on the cell to the same-coverage basic adjacent cell within a preset time T, if all users cannot be switched away and cannot enter forced turn-off, removing the access prohibition state, informing all adjacent base stations that the cell exits the energy-saving state through an X2 port, and re-detecting the trigger condition after the punishment time is over;
and during the preset time T, checking the number of users of the cell once per period T, and after the preset time T is finished, if the number of connected users of the cell is less than or equal to a forced turn-off user number threshold and no user with QCI of 1 exists, closing the carrier frequency of the cell and blocking the cell.
6. The cell turn-off power saving method based on co-coverage learning of claim 2 or 3, wherein the co-coverage turn-off exit condition comprises the following conditions:
the uplink PRB utilization rate of the same-coverage basic neighboring cell is higher than the intelligent turn-off exit uplink threshold of the same-coverage carrier of the capacity cell;
the utilization rate of the same-coverage basic neighbor cell downlink PRB is higher than the intelligent shutdown exit downlink threshold of the same-coverage carrier of the capacity cell;
ending a time period of same coverage carrier frequency turn-off, wherein the time period comprises starting time to ending time;
the same-coverage basic adjacent cell is unavailable;
resetting a capacity cell;
and for the switched-off capacity cell, if the capacity cell meets any one of the above conditions, judging that the capacity cell meets the same-coverage switch-off exit condition.
7. A cell turn-off power saving system based on same-coverage learning, which is used for performing turn-off power saving control on cells through a cell turn-off power saving method based on same-coverage learning according to any one of claims 1-6, and the system comprises:
a cell configuration module, configured to define, in a pilot frequency same coverage network, a cell corresponding to a frequency point serving as a basic coverage target as a basic cell, define a cell corresponding to a frequency point serving as a cell capacity increasing target as a capacity cell, and configure the basic cell as a basic neighboring cell of the capacity cell;
the same-coverage learning module is used for performing same-coverage learning on the capacity cell and the basic adjacent cell thereof in a mode of periodically performing different-frequency MR measurement on the capacity cell and the basic adjacent cell thereof, and identifying the same-coverage adjacent cell of the capacity cell;
the system comprises a cell switching-off and starting module, a cell switching-off and starting module and a capacity cell switching-off and starting module, wherein when a capacity cell has a same-coverage adjacent region, the cell switching-off and starting module is used for judging whether the capacity cell meets a same-coverage switching-off entering condition or not, if so, the cell switching-off and starting module is used for executing a switching-off process on the capacity cell, and the capacity cell enters a switching-off mode and switches off a same-coverage carrier frequency; and for the switched-off capacity cell, the cell switching-off and starting module is used for judging whether the capacity cell meets the same-coverage switching-off exit condition, and if so, the cell switching-off and starting module is used for exiting the capacity cell from the switching-off mode, turning on the switched-off carrier frequency and informing the adjacent base station and the adjacent cell.
8. The system of claim 7, wherein the co-coverage learning module is configured to periodically perform inter-frequency MR measurement on the capacity cell and the basic neighboring cell, identify a co-coverage neighboring cell of the capacity cell, and for each period, the co-coverage learning module is configured to perform the following operations:
randomly selecting users in the capacity cell, and issuing measurement control to the pilot frequency points of all basic cells and non-carrier frequency off cells of the capacity cell;
judging whether the effective measurement report received by the base station in the period is larger than or equal to a preset value,
if so, stopping the different-frequency MR measurement, calculating the overlapping coverage proportion of the capacity cell and each basic adjacent cell and the coverage hole proportion caused by switching off the capacity cell, and taking the basic cell with the overlapping coverage proportion meeting a threshold value with the capacity cell as the same-coverage basic adjacent cell of the capacity cell;
if not, discarding the effective measurement report received in the current period, and executing the next period;
the overlapping coverage ratio of the capacity cell and the basic adjacent cell = the number of times of measuring to the basic adjacent cell/the number of times of measurement control distribution of the frequency point to which the basic adjacent cell belongs
The coverage hole ratio = the number of times that no neighbor cell is detected in any basic cell and non-carrier frequency turn-off cell/the total effective measurement control issuing number of times of the capacity cell.
9. The co-coverage learning based cell outage power saving system according to claim 8, wherein the co-coverage outage entry condition comprises the following conditions:
the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start uplink threshold of the same-coverage carrier of the cell, and the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start downlink threshold of the same-coverage carrier of the cell;
the coverage hole ratio possibly caused by switching off the capacity cell is less than or equal to a threshold value;
for LTE FDD, the cell is not in a low power consumption mode or a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
at least one same-coverage basic adjacent cell is provided, and all the same-coverage basic adjacent cells can be used;
if the capacity cells simultaneously meet the conditions, judging that the capacity cells meet the same-coverage turn-off entry conditions;
the cell switching-off and starting module is used for executing a switching-off process on the capacity cell by executing the following operations:
after the capacity cell meets the same-coverage shutdown entry condition, if the number of the current connected state users of the capacity cell is 0, directly blocking the cell, and informing an adjacent base station and an adjacent cell; if the current connected-state user number of the capacity cell is not 0, the base station executes the following actions:
and broadcasting the cell in a Barred (Barred) state through an SIB1 message. Meanwhile, the adjacent base station is informed through an X2 port, so that other cells are prevented from initiating switching to the cell, and a new user is forbidden to access after Barred indication takes effect;
prohibiting configuring the cell as an auxiliary cell, and enabling a CA (subscriber access center) user taking the cell as the auxiliary cell to delete the configuration of the auxiliary cell;
trying to switch all users on the cell to the same-coverage basic neighboring cell within a preset time T, if the users cannot be switched away completely and cannot enter forced turn-off, removing the access prohibition state, informing all neighboring base stations that the cell exits the energy-saving state through an X2 port, and re-detecting the trigger condition after the punishment time is over;
and during the preset time T, checking the number of users of the cell once per period T, and after the preset time T is finished, if the number of connected users of the cell is less than or equal to the number threshold of forced turn-off users and no user with QCI (quaternary ammonium chloride) of 1, closing the carrier frequency of the cell and blocking the cell.
10. The co-coverage learning based cell shutdown power saving system according to claim 8 or 9, wherein the co-coverage shutdown entry condition comprises the following conditions:
the uplink PRB utilization rate of the cell + the uplink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start uplink threshold of the same-coverage carrier of the cell, and the downlink PRB utilization rate of the cell + the downlink PRB utilization rate of the same-coverage basic neighbor cell < the intelligent turn-off start downlink threshold of the same-coverage carrier of the cell;
the coverage hole ratio possibly caused by switching off the capacity cell is less than or equal to a threshold value;
for LTE FDD, the cell is not in a low power consumption mode or a switching-off mode of a different system cell; for LTE TDD, the cell is not in a low power consumption mode triggering state;
at least one same-coverage basic adjacent cell is provided, and all the same-coverage basic adjacent cells can be used;
and if the capacity cells simultaneously meet the conditions, judging that the capacity cells meet the same-coverage turn-off entry conditions.
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