CN112291835A

CN112291835A - System bandwidth processing method, base station, device and medium

Info

Publication number: CN112291835A
Application number: CN201910675448.6A
Authority: CN
Inventors: 董海红
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2021-01-29

Abstract

The invention discloses a system bandwidth processing method, a base station, a device and a medium, comprising the following steps: acquiring the number of users in a long-term evolution base station cell and the utilization rate of a physical resource block; and triggering the long term evolution base station to enter a cell system bandwidth reduction process when the user number in the cell and the utilization rate of the physical resource block are determined to meet preset thresholds. By adopting the invention, the low-load time period can be effectively extracted, and the cell bandwidth is reduced, thereby realizing the energy saving of the long-term evolution cell under the condition of ensuring the coverage.

Description

System bandwidth processing method, base station, device and medium

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a system bandwidth processing method, a base station, an apparatus, and a medium.

Background

The 3GPP (third Generation Partnership Project) studied The energy saving technology in The SON (Self-Organized Networks) topic from The R9 (Release 9, Release-9) phase, and The whole SI (Study of technical feasibility) phase completed The freeze on The 48 th full session of RAN (Radio Access Network) in 5 months 2015. The 3GPP has passed the project report drafted by china mobile at R10, and thus discusses the end of energy saving as a single issue in RAN3, mainly analyzing potential energy saving schemes in EUTRAN (UMTS Terrestrial Radio Access Network). In some special application scenarios, such as shopping malls, office buildings, squares, student dormitory buildings, rural wide coverage, basements, and other scenarios with regular user activities, an LTE (Long Term Evolution) base station works normally no matter the user is used intensively or the user is not used. In these scenarios, the user traffic and the user usage traffic are different at different time intervals, for example, the daytime traffic is large, the night traffic is small, accordingly, the number of users using a certain LTE base station is large in a centralized manner during the daytime, and the number of users using the LTE base station is small at night, but in this case, the LTE base station is always in a normal working state, and in a scenario with regular user behaviors, the LTE base station continuously works 24 hours a day, which not only consumes electric energy, but also increases the operation cost of an operator. The existing carrier turn-off scheme requires multi-layer network coverage in a hot spot area, such as wide area coverage and basic capacity in an F frequency band, capacity expansion in a D frequency band in a dense urban area, and multi-layer network coverage such as double-layer network coverage in F1+ F2 in a same coverage scenario, a capacity cell may be turned off, and users of the capacity cell are switched to a basic coverage cell to achieve the purpose of energy saving, where the capacity cell refers to a capacity expansion cell that absorbs part of traffic in the range of the basic coverage cell to improve network coverage capacity and increases some pilot frequencies, for example, in the F + D network coverage scenario, D is used as the capacity cell.

But the defects of the prior art are as follows: in the case of single-layer networking, i.e., in the case of single-frequency coverage networking, this scheme cannot be applied.

Disclosure of Invention

The invention provides a system bandwidth processing method, a base station, a device and a medium, which are used for providing a base station energy-saving scheme capable of being used even under a single-layer network.

The embodiment of the invention provides a system bandwidth processing method, which comprises the following steps:

acquiring the number of users in an LTE base station cell and the PRB utilization rate;

and triggering the LTE base station to enter a cell system bandwidth reduction flow when the user number in the cell and the PRB utilization rate meet preset threshold values.

In implementation, determining that the number of users in a cell and the PRB utilization rate meet a preset threshold includes:

when the number of users in the cell is lower than a first threshold value, determining whether the PRB utilization rate of the cell is lower than a second threshold value;

and when the time that the PRB utilization rate of the cell is lower than the second threshold value is larger than a fourth threshold value, determining that the number of users in the cell and the PRB utilization rate meet preset threshold values.

In implementation, after the LTE base station enters a cell bandwidth reduction process, the method further includes:

and switching the user of the home cell to the adjacent cell.

In the implementation, after the user in the home cell is handed over to the neighboring cell, the method further includes:

performing launching down processing on a cell entering a system bandwidth reduction process;

and after the shutdown processing is finished, configuring the cell entering the system bandwidth reduction process as a cell bandwidth activation, and informing a high layer to establish the cell.

In an implementation, the method further comprises the following steps:

and triggering the LTE base station to enter a cell system bandwidth recovery flow when the user number in the cell and the PRB utilization rate are determined not to meet the preset threshold value.

In implementation, determining that the number of users in a cell and the PRB utilization rate do not satisfy a preset threshold includes:

when the number of users in a cell is determined to be larger than a first threshold value, determining that the number of users in the cell and the PRB utilization rate do not meet a preset threshold value; and/or the presence of a gas in the gas,

and when the number of users in the cell is determined to be lower than the first threshold value and the time when the PRB utilization rate of the cell is determined to be larger than the third threshold value is determined to be larger than the fourth threshold value, determining that the number of users in the cell and the PRB utilization rate do not meet the preset threshold value.

In implementation, after the LTE base station enters the cell system bandwidth recovery procedure, the method further includes:

and switching the user of the home cell to the adjacent cell.

performing shutdown processing on a cell entering system bandwidth recovery;

after the shutdown processing is completed, the cell entering the system bandwidth recovery is configured as the original system bandwidth configuration activation, and the high layer is informed to establish the cell.

The embodiment of the invention provides a base station, which comprises:

a processor for reading the program in the memory, performing the following processes:

when the number of users in a cell and the PRB utilization rate meet preset thresholds, triggering the LTE base station to enter a cell system bandwidth reduction flow;

a transceiver for receiving and transmitting data under the control of the processor.

and switching the user of the home cell to the adjacent cell.

In an implementation, the method further comprises the following steps:

and switching the user of the home cell to the adjacent cell.

performing shutdown processing on a cell entering system bandwidth recovery;

The embodiment of the invention provides a system bandwidth processing device, which comprises:

the parameter acquisition module is used for acquiring the number of users in the LTE base station cell and the PRB utilization rate;

and the bandwidth processing module is used for triggering the LTE base station to enter a cell system bandwidth reduction flow when the number of users in the cell and the PRB utilization rate meet preset thresholds.

The embodiment of the invention provides a computer readable storage medium, which stores a computer program for executing the system bandwidth processing method.

The invention has the following beneficial effects:

according to the technical scheme provided by the embodiment of the invention, the bandwidth change of the system is controlled by inquiring the number of users in the cell and the PRB utilization rate, and the LTE cell load can be intelligently judged through the number of users in the cell and the PRB utilization rate, so that a low-load time period can be effectively extracted, the cell bandwidth is reduced, and the energy saving of the LTE cell can be realized under the condition of ensuring the coverage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram illustrating an implementation flow of a system bandwidth processing method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a process flow of cell energy saving according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a post-processing procedure for reducing bandwidth of a cell according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a post-processing procedure for cell recovery according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a base station structure according to an embodiment of the present invention.

Detailed Description

With the deep construction of the LTE network, the number of LTE base stations is increasing, the number of users and network traffic are increasing rapidly, and the problem of network energy consumption is more and more prominent, because the energy consumption of the wireless access network accounts for more than 70% of the energy consumption of the mobile communication system, where the energy consumption of the base station accounts for the largest proportion, the power consumption cost of the base station becomes one of the most major operation expenditure costs of operators. In order to achieve the energy saving goal of mobile operators, research on energy saving and consumption reduction technology of a wireless base station is a very important aspect, when traffic is low, the load of a cell is generally low, wireless resources are not fully utilized, and high-power opening of the base station brings unnecessary energy consumption.

Based on this, the technical scheme provided by the embodiment of the invention can utilize the discontinuity and the imbalance of the wireless service requirement on time under a single-layer network, and the system can automatically judge and reduce the system bandwidth of the LTE cell during the period of low service load or no service load of the network according to the busy state of the network, thereby achieving the energy saving of the LTE cell and ensuring that the coverage is not influenced.

The following describes embodiments of the present invention with reference to the drawings.

Fig. 1 is a schematic flow chart of an implementation of a system bandwidth processing method, as shown in the figure, the method may include:

step 101, acquiring the number of users in an LTE base station cell and the PRB utilization rate;

step 102, when the number of users in the cell and the PRB utilization rate meet preset thresholds, triggering the LTE base station to enter a cell system bandwidth reduction flow.

In the specific implementation, the method for determining that the number of users in a cell and the PRB utilization rate meet a preset threshold includes:

In specific implementation, after the LTE base station enters the cell bandwidth reduction process, the method may further include:

and switching the user of the home cell to the adjacent cell.

In a specific implementation, after the user in the home cell is handed over to the neighboring cell, the method may further include:

performing shutdown processing on a cell entering a system bandwidth reduction process;

For the bandwidth recovery procedure, the implementation may further include:

In the specific implementation, determining that the number of users in the cell and the utilization rate of the PRB do not meet a preset threshold includes:

In a specific implementation, after the LTE base station enters the cell system bandwidth recovery procedure, the method may further include:

and switching the user of the home cell to the adjacent cell.

performing shutdown processing on a cell entering system bandwidth recovery;

Specifically, the LTE base station may determine whether the number of users in the cell is lower than a first threshold within a specified energy-saving time period;

if yes, judging whether the PRB (Physical Resource Block) utilization rate of the current cell is smaller than a second threshold value;

if so, judging whether the time that the PRB utilization rate of the current LTE cell is lower than a second threshold value is greater than a fourth threshold value;

and if so, triggering the LTE base station to enter a cell system bandwidth reduction process.

Further, the LTE base station can judge whether the number of users in the cell is greater than a first threshold within a specified energy-saving time period;

if so, triggering the LTE base station to perform a cell recovery process; otherwise, continuously judging whether the PRB utilization rate of the cell is greater than a third threshold value;

if so, judging whether the time of the PRB utilization rate of the current LTE base station is greater than a fourth threshold value; and if so, triggering the LTE base station to enter a cell recovery flow.

For ease of understanding and description, several thresholds are explained below:

the first threshold value: the number threshold of system bandwidth users is reduced in a cell;

the second threshold value: the cell reduces the low threshold of the system bandwidth PRB utilization rate;

the third threshold value: the cell reduces the high threshold of the system bandwidth PRB utilization rate;

the fourth threshold value: the cell drops the system bandwidth lag time.

In the implementation, the initiation of energy saving detection and the termination of energy saving detection can depend on the starting time and the ending time set by the base station according to the energy saving strategy of the LTE base station, and when the system time runs to the starting time or the ending time, the base station can start the initiation of energy saving detection or terminate energy saving detection and quit energy saving.

For the energy saving of the bandwidth reduction of the cell, when the energy saving is started and the energy saving detection is carried out, the base station can periodically detect the number of users and the PRB utilization rate of each cell, and judges whether the bandwidth reduction of the cell is carried out according to the number of the users and the PRB utilization rate.

Similarly, after entering energy saving, the base station can periodically detect the number of users entering the bandwidth-reduced energy-saving cell and the PRB utilization rate, and judge whether the cell recovers the cell bandwidth according to the number of users and the PRB utilization rate.

And when the energy conservation is finished and the energy conservation is exited, the base station recovers the cell bandwidth, the cell energy conservation is exited, and the energy conservation is finished.

The following is an example.

Fig. 2 is a schematic diagram of a cell energy saving process flow, which may include:

step 201, the base station OM sends a cell user number query request to the base station HL.

Step 202, the base station HL returns the cell user number query response to the base station OM.

Step 203, judging whether the number of the users in the cell is smaller than the threshold (first threshold) of the number of the users in the system bandwidth reduction system in the cell, if so, turning to step 204, otherwise, ending.

Specifically, in the energy-saving detection process, a base station OM (Operation Maintenance) may obtain the number of online users in a cell from a base station HL (High Layer) according to a configured period granularity period, the High Layer responds to the number of users in the current cell, and when the number of users in the cell satisfies a threshold greater than the number of users in the cell bandwidth reduction, the process is directly exited, otherwise, the process is continued.

And step 204, the base station OM sends a PRB utilization rate query request to the base station HL.

And step 205, the base station HL returns the PRB utilization rate inquiry response to the base station OM.

Step 206, determining whether the PRB utilization is smaller than a threshold (a second threshold) of the number of users for reducing the system bandwidth in the cell, if yes, going to step 207, otherwise, going to step 208.

And step 207, reducing the bandwidth counter +1 by the cell.

And step 208, clearing the cell bandwidth reduction counter.

Specifically, the base station OM sends a PRB utilization rate query request message to the HL according to the periodic granularity, and the response message of the high layer carries the uplink and downlink PRB utilization rates of all currently activated cells.

The base station OM maintains a set of counters and records the times that the utilization rate of the uplink PRB and the downlink PRB of each cell reaches the conditions of reducing the system bandwidth of the cell and recovering the cell.

And the base station OM judges whether the PRB occupancy rates of the uplink and downlink cell base stations of the cell are lower than the PRB utilization rate low threshold corresponding to the cell system bandwidth reduction strategy or not respectively, if so, the cell system bandwidth reduction counter is accumulated by 1, and otherwise, the cell system bandwidth reduction counter is reset.

Step 209, determining whether the PRB utilization is greater than a threshold (third threshold) of the number of users for reducing system bandwidth in the cell, if yes, going to step 210, otherwise, going to step 211.

Step 210, cell recovery counter + 1.

Step 211, the cell recovery counter is cleared.

Specifically, the base station OM respectively judges whether the uplink and downlink PRB utilization rates of the normal cell exceed the PRB utilization rate high threshold corresponding to the cell drop system bandwidth policy, if yes, increments the cell recovery counter by 1, and otherwise resets the cell recovery counter.

Step 212, determining whether the number of users in the cell is greater than a threshold (first threshold) of the number of users in the system bandwidth reduced by the cell, if yes, going to step 216, otherwise, going to step 213.

Step 213, determining whether the count of the cell bandwidth reduction counter is greater than or equal to the hysteresis time (fourth threshold), if yes, going to step 214, otherwise, going to step 215.

And step 214, performing cell bandwidth reduction post-processing.

Step 215, determining whether the count of the cell recovery counter is greater than or equal to the hysteresis time (fourth threshold), if yes, going to step 216, otherwise, ending.

And step 216, cell recovery post-processing.

Specifically, the base station OM judges whether the times of the system bandwidth reduction counters of the uplink cell and the downlink cell of the cell are both greater than or equal to the lag time, and if so, performs the post-processing of reducing the system bandwidth of the cell.

And the base station OM judges whether the times of the cell uplink or downlink cell recovery counter is greater than or equal to the lag time, and if so, the cell recovery post-processing is carried out.

And the base station OM judges whether the number of users in the cell is greater than the threshold of the number of users for reducing the bandwidth of the cell, and if so, the cell recovery post-processing is carried out.

Fig. 3 is a schematic diagram of a post-processing procedure of reducing bandwidth of a cell, which may include:

step 301, the base station OM receives the indication of the cell bandwidth reduction.

Step 302, the base station performs a puncturing down process on the cell whose system bandwidth is to be reduced.

Step 303, activating the cell to reconfigure to a small bandwidth.

Step 304, the base station OM sends a cell establishment notification to the base station HL.

Specifically, after entering the process flow of reducing the system bandwidth of the cell, the base station OM switches the user to other neighboring cells as much as possible in order to ensure the current perception of the user on the network, and the base station performs the reduction down process on the cell of which the system bandwidth is to be reduced.

After the switching-down is completed, the base station OM directly configures the cell as a small bandwidth (e.g. 5M) to be activated, and informs a high layer to establish the cell.

Fig. 4 is a schematic diagram of a post-processing procedure of cell recovery, which may include:

step 401, the base station OM receives the indication of cell bandwidth reduction recovery.

Step 402, the base station performs a puncturing down process on the cell to be recovered by the system bandwidth.

Step 403, activating the cell to recover the original bandwidth.

Step 404, the base station OM sends a cell establishment notification to the base station HL.

Specifically, after entering the cell recovery processing flow, the base station OM switches the user to other neighboring cells as much as possible in order to ensure the current on-network user perception, and the base station performs the switching down processing on the cell whose system bandwidth is to be reduced.

After the switching-down is completed, the base station OM directly configures the cell as the original system bandwidth configuration activation, and informs the high layer to establish the cell.

Based on the same inventive concept, the embodiment of the present invention further provides a base station, a system bandwidth processing apparatus, and a computer readable storage medium, and because the principle of solving the problem of these devices is similar to the system bandwidth processing method, the implementation of these devices may refer to the implementation of the method, and repeated details are not repeated.

When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.

Fig. 5 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

the processor 500, which is used to read the program in the memory 520, executes the following processes:

a transceiver 510 for receiving and transmitting data under the control of the processor 500.

and switching the user of the home cell to the adjacent cell.

In an implementation, the method further comprises the following steps:

and switching the user of the home cell to the adjacent cell.

performing shutdown processing on a cell entering system bandwidth recovery;

Wherein in fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 500, and various circuits, represented by memory 520, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

The embodiment of the invention also provides a system bandwidth processing device, which comprises:

The specific implementation can be seen in the implementation of the above system bandwidth processing method.

For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.

In summary, in the embodiments of the present invention, in the technical solution provided in the embodiments of the present invention, when the cell energy saving is determined within a specified time range and a first threshold (the number of users in a cell bandwidth reduction) is met, and a second threshold (a PRB utilization rate low threshold) is met and continues to a fourth threshold (a hysteresis time), the system bandwidth reduction is triggered.

And judging the energy conservation of the cell in a specified time range, and triggering the recovery of the system bandwidth when the third threshold (PRB utilization rate high threshold) is met and the fourth threshold (lag time) is continued.

And judging the energy conservation of the cell in a specified time range, and triggering and recovering the system bandwidth when the number of the online users of the cell is greater than a first threshold (the number of users of the cell with reduced bandwidth) after the energy conservation is started.

The technical scheme provided by the embodiment of the invention can intelligently judge the load of the LTE cell, effectively extract the low-load time period, reduce the bandwidth of the cell and achieve the energy saving of the LTE cell under the condition of ensuring the coverage. And the method can also be applied to a single-layer network, and has low requirement on a deployed network.

In specific practice, the network deployment is simple, direct software upgrading can be achieved, and LTE energy-saving scheme deployment of operators is powerfully supported.

Due to the characteristics, the technical scheme provided by the embodiment of the invention has a wide application prospect in the LTE energy saving.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for system bandwidth processing, comprising:

acquiring the number of users in an LTE base station cell and the utilization rate of a physical resource block PRB by long term evolution;

2. The method of claim 1, wherein determining that a number of users in a cell and a PRB utilization meet a preset threshold comprises:

3. The method of claim 1, wherein after the LTE base station enters a cell reduction system bandwidth procedure, further comprising:

and switching the user of the home cell to the adjacent cell.

4. The method of claim 3, wherein after handing over the user of the home cell to the neighbor cell, further comprising:

closing the launching down process for the cell entering the system bandwidth reduction process;

5. The method of any of claims 1 to 4, further comprising:

6. The method of claim 5, wherein determining that the number of users in the cell and the PRB utilization do not meet a preset threshold comprises:

7. The method of claim 5, wherein after the LTE base station enters a cell system bandwidth recovery procedure, further comprising:

and switching the user of the home cell to the adjacent cell.

8. The method of claim 7, wherein after handing over the user of the home cell to the neighbor cell, further comprising:

performing shutdown processing on a cell entering system bandwidth recovery;

9. A base station, comprising:

10. The base station of claim 9, wherein determining that the number of users in the cell and the PRB utilization satisfy preset thresholds comprises:

11. The base station of claim 9, wherein after entering a cell reduction system bandwidth procedure, the LTE base station further comprises:

and switching the user of the home cell to the adjacent cell.

12. The base station of claim 11, wherein after handing over a user of the home cell to the neighbor cell, further comprising:

13. The base station of any of claims 9 to 12, further comprising:

14. The base station of claim 13, wherein determining that the number of users in the cell and the PRB utilization do not meet preset thresholds comprises:

15. The base station of claim 13, wherein after entering a cell system bandwidth recovery procedure, the LTE base station further comprises:

and switching the user of the home cell to the adjacent cell.

16. The base station of claim 15, wherein after handing over the user of the home cell to the neighbor cell, further comprising:

performing shutdown processing on a cell entering system bandwidth recovery;

17. A system bandwidth processing apparatus, comprising:

18. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 8.