CN110891306B - Method, base station and storage medium for downlink coverage adaptive adjustment - Google Patents

Method, base station and storage medium for downlink coverage adaptive adjustment Download PDF

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CN110891306B
CN110891306B CN201811042253.XA CN201811042253A CN110891306B CN 110891306 B CN110891306 B CN 110891306B CN 201811042253 A CN201811042253 A CN 201811042253A CN 110891306 B CN110891306 B CN 110891306B
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crs power
downlink
rbs
preset
downlink channel
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CN110891306A (en
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黄伟
王梦茹
王亮
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Chengdu TD Tech Ltd
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Chengdu TD Tech Ltd
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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
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • 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
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • 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 provides a method, a base station and a storage medium for downlink coverage self-adaptive adjustment, wherein the method comprises the following steps: judging whether the number of downlink groups receiving the service in a preset period is within a preset threshold range; if so, acquiring the RB utilization rate of the resource blocks in the downlink channel in the preset period, wherein the RB utilization rate is the ratio of the number of the RBs actually used in the downlink channel to the number of the RBs available in the downlink channel in the preset period; judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not; if yes, determining that the downlink is low in load; and updating the CRS power of the cell according to the number of the RBs actually used in the downlink channel, the number of the RBs available in the downlink channel and the CRS power of a preset cell reference signal. The CRS power is updated by the number of downlink groups and the RB utilization rate acquired by the base station, and when the load is low, the downlink coverage strength of the base station is improved, and the RB resource utilization rate of the cell is improved.

Description

Method, base station and storage medium for downlink coverage adaptive adjustment
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method, a base station, and a storage medium for adaptively adjusting downlink coverage.
Background
In a Long Term Evolution (LTE) trunking system, point-to-multipoint group communication facing a cell is usually performed in a downlink direction from a base station to a user equipment, where communication quality of the group communication is affected by strength of downlink coverage of the base station. The power value of the cell reference signal CRS may be used to measure the strength of the downlink coverage.
In the prior art, a base station in an LTE trunking system performs fixed setting according to downlink coverage configured in advance, that is, the power of a CRS is set to a fixed value, for example, the base station sets the power of a cell reference signal CRS to a fixed value according to a cell resource block RB full allocation manner.
Under the conditions that the number of downlink groups of the current trunking system is reduced and the network load is low, the fixed setting mode of the CRS power in the prior art not only prevents the CRS power from being effectively improved, affects the downlink coverage strength of the base station, but also reduces the utilization rate of RB resources of a cell.
Disclosure of Invention
The invention provides a method for adaptively adjusting downlink coverage, a base station and a storage medium, which can improve the downlink coverage strength of the base station and improve the RB resource utilization rate of a cell under the condition of low load.
A first aspect of the present invention provides a method for adaptively adjusting downlink coverage, including:
judging whether the number of downlink groups receiving the service in a preset period is within a preset threshold range or not;
if so, acquiring the RB utilization rate of the resource blocks in the downlink channel in the preset period, wherein the RB utilization rate is the ratio of the number of the RBs actually used in the downlink channel to the number of the RBs available in the downlink channel in the preset period;
judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not;
if yes, determining that the downlink is low in load;
and updating the CRS power of the cell according to the number of practically used RBs in the downlink channel, the number of available RBs in the downlink channel and the CRS power of a preset cell reference signal, wherein the preset CRS power is the CRS power set by the base station according to the RRU power and the number of available RBs in the downlink channel.
Optionally, the updating the cell CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and the preset cell reference signal CRS power includes:
acquiring updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel and the preset cell reference signal CRS power;
and updating the CRS power of the cell from a preset CRS power to the updated CRS power.
Optionally, before determining whether the RB utilization is smaller than a first utilization threshold, the method further includes:
when the downlink group number is not in the threshold range, judging whether the downlink group number is 0 or not;
if yes, determining that a downlink is high-load, and the cell CRS power is the preset CRS power;
and if not, acquiring the utilization rate of the resource block RB in the downlink channel in the preset period.
Optionally, the method further includes: when the RB utilization rate is larger than a first utilization rate threshold value, judging whether the RB utilization rate is larger than a second utilization rate threshold value, wherein the second utilization rate threshold value is larger than the first utilization rate threshold value;
and if so, determining that the downlink is high-load, and the cell CRS power is the preset CRS power.
Optionally, the obtaining updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power includes:
acquiring the number of idle RBs in the downlink channel according to the number of the RBs actually used in the downlink channel and the number of the RBs available in the downlink channel;
and acquiring the updated CRS power according to the number of the idle RBs and the preset CRS power.
Optionally, the obtaining the updated CRS power according to the number of idle RBs in the downlink channel and the preset CRS power includes:
acquiring the number of idle subcarriers according to the number of the idle RBs;
and acquiring the updated CRS power according to the number of idle subcarriers and the preset CRS power.
Optionally, before obtaining the updated CRS power, the method further includes:
acquiring the number of available subcarriers according to the number of available RBs in the downlink channel;
and acquiring the preset CRS power according to the RRU power and the number of the usable subcarriers.
A second aspect of the present invention provides a base station, comprising:
the group number judging module is used for judging whether the number of downlink groups for receiving the service in a preset period is within a preset threshold range;
an RB utilization obtaining module, configured to obtain, when the number of downlink groups is within a preset threshold range, a resource block RB utilization in a downlink channel in the preset period, where the RB utilization is a ratio of an actually used number of RBs in the downlink channel to an available number of RBs in the downlink channel in the preset period;
the RB utilization rate judging module is used for judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not;
a determining module to determine that a downlink is low load when the RB utilization is less than the first utilization threshold;
and the updating module is used for updating the CRS power of the cell according to the number of the RBs actually used in the downlink channel, the number of the RBs available in the downlink channel and the CRS power of a preset cell reference signal, wherein the preset CRS power is the CRS power set by the base station according to the RRU power and the number of the RBs available in the downlink channel. .
Optionally, the updating module is specifically configured to obtain updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power;
and updating the CRS power of the cell from a preset CRS power to the updated CRS power.
Optionally, the group number determining module is further configured to determine whether the number of downlink groups is 0 when the number of downlink groups is not within the threshold range.
The determining module is further configured to determine that a downlink is a high load when the number of the downlink groups is 0, and the cell CRS power is the preset CRS power.
And the RB utilization rate acquisition module is further used for acquiring the RB utilization rate of the resource blocks in the downlink channel in the preset period when the number of the downlink groups is not 0.
Optionally, the RB utilization determining module is further configured to determine whether the RB utilization is greater than a second utilization threshold when the RB utilization is greater than a first utilization threshold, where the second utilization threshold is greater than the first utilization threshold.
A determining module, further configured to determine that a downlink is a high load and the cell CRS power is the preset CRS power when the RB utilization is greater than a second utilization threshold.
Optionally, the updating module is further specifically configured to obtain the number of idle RBs in the downlink channel according to the number of RBs actually used in the downlink channel and the number of RBs available in the downlink channel;
and acquiring the updated CRS power according to the number of the idle RBs and the preset CRS power.
Optionally, the updating module is further specifically configured to obtain the number of idle subcarriers according to the number of idle RBs;
and acquiring the updated CRS power according to the number of idle subcarriers and the preset CRS power.
Optionally, the base station further includes: presetting a CRS power acquisition module;
the preset CRS power acquisition module is used for acquiring the number of available subcarriers according to the number of available RBs in the downlink channel;
and acquiring the preset CRS power according to the RRU power and the number of the available subcarriers.
A third aspect of the present invention provides a base station, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory, so that the base station executes the method for adaptively adjusting the downlink coverage.
A fourth aspect of the present invention provides a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the method for adaptive downlink coverage adjustment is implemented.
The invention provides a method, a base station and a storage medium for downlink coverage self-adaptive adjustment, wherein the method comprises the following steps: judging whether the number of downlink groups receiving the service in a preset period is within a preset threshold range; if so, acquiring the RB utilization rate of the resource blocks in the downlink channel in the preset period, wherein the RB utilization rate is the ratio of the number of the RBs actually used in the downlink channel to the number of the RBs available in the downlink channel in the preset period; judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not; if yes, determining that the downlink is low in load; updating the CRS power of the cell according to the number of practically used RBs in the downlink channel, the number of available RBs in the downlink channel and the CRS power of a preset cell reference signal, wherein the preset CRS power is the CRS power set by the base station according to the RRU power and the number of available RBs in the downlink channel. The base station can adaptively update the CRS power according to the number of downlink groups and the RB utilization rate which are acquired periodically, and when the load is low, the downlink coverage strength of the base station is improved, and the RB resource utilization rate of a cell is improved.
Drawings
Fig. 1 is a first flowchart of a method for adaptively adjusting downlink coverage according to the present invention;
fig. 2 is a second flowchart of a method for adaptively adjusting downlink coverage according to the present invention;
fig. 3 is a third flowchart of a method for adaptively adjusting downlink coverage according to the present invention;
fig. 4 is a first schematic structural diagram of a base station according to the present invention;
fig. 5 is a schematic structural diagram of a base station according to the present invention;
fig. 6 is a schematic structural diagram of a base station according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms of the present invention are explained:
a cluster communication system: the system is a mobile communication system for group dispatching command communication, and the system has available channels which can be shared by all users of the system; for example, in a trunking communication system, a voice group call may be implemented, where the voice group call is a point-to-multipoint voice call initiated by one mobile station or dispatch station and involving a plurality of mobile stations.
Cell reference signal CRS: is a pilot signal, which is a known signal provided by a transmitting end to a receiving end for channel estimation or channel detection; in a long term evolution LTE network, an Evolved Node B (eNodeB) generally allocates a part of the system bandwidth to a specific user equipment UE. I.e., a specific frequency region resource is allocated to the UE at one specific time. If the eNodeB knows which specific frequency region has better quality, the eNodeB allocates the better specific frequency region to the UE preferentially, so that the service quality of the UE is better guaranteed. The cell reference signal may provide a reference for the scheduling resources of the eNodeB.
Number of downlink groups: the trunking communication system can provide service for a plurality of group users at the same time, one group comprises a plurality of users, and the number of downlink groups is the number of the established plurality of user groups.
Resource block RB: in the frame structure of LTE, there is a concept of resource blocks. One resource block has a bandwidth of 180kHz, is composed of 12 subcarriers with a bandwidth of 15kHz, and is a slot (0.5 ms) in the time domain, so that 1 RB is actually 1 carrier with a bandwidth of 180kHz in the time domain, and is used for carrying service data.
Downlink: in a mobile communication system, downlink refers to a physical channel from a base station to a mobile station.
Power of a Radio Remote Unit (RRU): the Radio remote unit is divided into a near-end machine, namely a wireless baseband control (Radio Server), and a far-end machine, namely a Radio Remote Unit (RRU), wherein the near-end machine, namely a wireless baseband control (Radio Server), and the far-end machine, namely the RRU, are connected through an optical fiber, and an interface of the remote unit is based on an open CPRI or IR interface and can be stably connected with equipment of a mainstream manufacturer.
And (3) subcarrier: in the process of signal transmission, the signal is not directly transmitted, but the signal interacts with a fixed frequency wave, which is called loading, and such a fixed frequency wave is called carrier frequency. The subcarriers are units for carrying traffic data.
In the related art, a base station in an LTE trunking system performs fixed setting according to downlink coverage configured in advance, that is, power of a CRS is set to a fixed value, for example, the base station sets power of a cell reference signal CRS to a fixed value according to a cell resource block RB full allocation mode, and specifically, the base station sets the CRS power according to RRU power and an RB full allocation mode in a downlink bandwidth.
Illustratively, if the RRU power is 20W and the downlink bandwidth is 20M, the CRS power is set in a manner of RB resource full allocation. The downlink bandwidth 20M includes 100 RBs, and one RB includes 12 subcarriers, that is, the downlink bandwidth may include 1200 subcarriers. Accordingly, the CRS power may be obtained as formula one as follows:
W CRS ＝W RRU -10logX formula one
Wherein, W CRS Denotes CRS Power, W RRU Denotes RRU power and X denotes the number of subcarriers.
According to the first formula, when the power of the RRU is 20W, the downlink bandwidth is 20M, and the CRS power set by adopting the RB resource full allocation mode is 15.2dm. In the prior art, a base station sets the CRS power as a fixed value, and when the number of downlink groups of a current trunking system is reduced and the network load is low, the fixed setting mode not only prevents the CRS power from being effectively improved, and affects the downlink coverage strength of the base station, but also reduces the RB resource utilization rate of a cell, that is, when the network load is low, the RB of the cell is not completely used, and at this time, the unused RBs cause waste, and the downlink coverage is still determined by the CRS power of 15.2dm, which is a fixed value.
Fig. 1 is a first flowchart of a method for adaptively adjusting downlink coverage according to the present invention, where an execution subject of the method flowchart shown in fig. 1 may be a base station. As shown in fig. 1, the method for adaptively adjusting downlink coverage provided in this embodiment may include:
s101, judging whether the number of downlink groups receiving the service in a preset period is within a preset threshold range.
In this embodiment, the base station periodically obtains the number of downlink groups for receiving a service in a preset period, and determines whether the number of downlink groups in the preset period is within a preset threshold range.
The threshold range may be pre-stored in the base station, and in this embodiment, the threshold range may be a first group threshold a, which is (0,A), where the threshold range is greater than 0 and smaller than the first group threshold a; specifically, the first group threshold a may be a value set by the base station according to a specific application, for example, the base station may be set according to the downlink bandwidth and the number of cells in the coverage area of the base station, and this embodiment does not limit how the base station sets the first group threshold and the specific manner of the threshold range.
The preset period in this embodiment may be set to 1s, that is, the base station may obtain the number of downlink groups for service reception in the preset period in real time to perform the determination, or the base station may periodically obtain the number of downlink groups for service reception in the preset period at the same time interval to perform the determination.
S102, when the number of downlink groups for receiving the service in the preset period is within the preset threshold range, acquiring the RB utilization rate of the resource blocks in the downlink channel in the preset period, wherein the RB utilization rate is the ratio of the number of the RBs actually used in the downlink channel to the number of the RBs available in the downlink channel in the preset period.
When the number of downlink groups for receiving services in a preset period is within a preset threshold range, a base station acquires the utilization rate of Resource Blocks (RBs) in a downlink channel in the preset period, specifically, the base station allocates corresponding downlink bandwidths for the downlink channel, and when the downlink groups for receiving services exist, the base station allocates corresponding bandwidths for each service according to the types of the services, that is, allocates corresponding Resource Blocks (RBs) for transmitting service data, so that the services in the groups can be smoothly performed.
When the bandwidth allocated to the downlink channel by the base station is fixed, the specific bandwidth allocated to the service channel is also fixed, that is, the number of RBs available in the downlink service channel is fixed, when service data is transmitted, the base station may obtain the number of RBs actually used in the downlink channel in a preset period, and further obtain the utilization rate of the block RBs in the downlink channel in the preset period according to the ratio of the number of RBs actually used in the downlink channel to the number of RBs available in the downlink channel.
S103, judging whether the RB utilization rate is smaller than a first utilization rate threshold value.
After acquiring the RB utilization rate in the preset period, the base station determines whether the RB utilization rate in the preset period is smaller than a first utilization rate threshold, where the first utilization rate threshold may be preset in the base station. Specifically, the first utilization threshold may also be a value set by the base station according to a specific application, for example, the base station may be set according to the downlink bandwidth, the number of cells in the coverage area of the base station, and the number of groups in common use, and this embodiment does not limit a specific manner how the base station sets the first utilization threshold.
And S104, when the RB utilization rate is less than a first utilization rate threshold value, determining that the downlink is low load.
When the base station determines whether the utilization rate of the RB is smaller than a first utilization rate threshold value, the service transmission data volume in the downlink service channel is determined to be smaller, the downlink is low-load, at the moment, the number of the available RBs distributed in the downlink channel is not completely used, namely, idle RBs exist in the downlink channel.
And S105, updating the CRS power of the cell according to the number of practically used RBs in the downlink channel, the number of available RBs in the downlink channel and the CRS power of a preset cell reference signal, wherein the preset CRS power is the CRS power set by the base station according to the RRU power and the number of available RBs in the downlink channel.
When the base station determines that the downlink is low-load, the cell CRS power can be updated according to the number of actually used RBs in the current preset period, the number of available RBs in the downlink channel and the preset cell reference signal CRS power.
One possible implementation is: before updating the cell CRS power, the cell CRS power is set as a preset CRS power, where the preset CRS power is set by the base station according to the power of the radio remote unit RRU and the CRS power set by the base station according to the number of RBs available in the downlink channel, and specifically, the way for the base station to set the preset CRS power may refer to the description related to the formula one.
When the base station determines that the downlink is low-load, the base station may obtain the number of idle RBs according to the number of actually used RBs in the current preset period and the number of available RBs in the downlink channel, and then obtain CRS power that the idle RBs may provide according to the calculation method in the formula one, and update the cell CRS power to the sum of the preset CRS power and the CRS power that the idle RB may provide. And further, idle RBs which are not used or allocated on a service channel can be converted into cell CRS power, and further, when a downlink is low in load, the downlink coverage strength can be improved.
Another possible implementation is: before updating the CRS power of the cell, setting the CRS power of the cell as the updated CRS power of a first cell, wherein the CRS power of the first cell can be the CRS power which can be provided by adding an idle RB on the basis of the preset CRS power; on this basis, when the number of downlink groups receiving services in the preset period is further reduced or the utilization rate of RBs is further reduced, the base station further obtains the number of idle RBs in the current preset period, and updates the CRS power of the first cell by adding the CRS power that the idle RBs can provide on the basis of the CRS power of the first cell. The method can periodically update the CRS power of the cell, periodically acquire the number of available RBs and further improve the utilization rate of the RBs.
The invention provides a method, a base station and a storage medium for downlink coverage self-adaptive adjustment, wherein the method comprises the following steps: judging whether the number of downlink groups receiving the service in a preset period is within a preset threshold range or not; if yes, acquiring the RB utilization rate of a resource block in a downlink channel in a preset period, wherein the RB utilization rate is the ratio of the number of RBs actually used in the downlink channel to the number of available RBs in the downlink channel in the preset period; judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not; if yes, determining that the downlink is low in load; updating the CRS power of the cell according to the number of practically used RBs in the downlink channel, the number of available RBs in the downlink channel and the CRS power of a preset cell reference signal, wherein the preset CRS power is the CRS power set by the base station according to the RRU power and the number of available RBs in the downlink channel. The base station can adaptively update the CRS power according to the number of downlink groups and the RB utilization rate which are acquired periodically, and when the load is low, the downlink coverage strength of the base station is improved, and the RB resource utilization rate of a cell is improved.
The method for adaptively adjusting downlink coverage provided by the present invention is described in detail with reference to fig. 2, where the angle at which the base station sets the cell CRS power as the preset CRS power before updating the cell CRS power is described, fig. 2 is a flowchart of a second method for adaptively adjusting downlink coverage provided by the present invention, and as shown in fig. 2, the method for adaptively adjusting downlink coverage provided by the present invention may include:
s201, determining whether the number of downlink groups receiving a service in a preset period is within a preset threshold range.
S202, when the number of downlink groups for receiving the service in the preset period is within the preset threshold range, the utilization rate of the Resource Block (RB) in the downlink channel in the preset period is obtained.
S203, judging whether the RB utilization rate is smaller than a first utilization rate threshold value.
And S204, when the RB utilization rate is less than the first utilization rate threshold value, determining that the downlink is low load.
And S205, acquiring updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel and the preset cell reference signal CRS power.
In this embodiment, before updating the CRS power of the cell, the CRS power of the cell is set to be a preset CRS power, where the preset CRS power is set by the base station according to the RRU power of the remote radio unit and the CRS power set by the number of RBs available in the downlink channel, and specifically, the base station obtains the number of available subcarriers according to the number of RBs available in the downlink channel, and obtains the preset CRS power according to the RRU power and the number of available subcarriers. Specifically, the method for setting the preset CRS power by the base station may refer to the description related to the formula one.
When the base station determines that the downlink is low-load, the base station can acquire the number of idle RBs in the downlink channel according to the number of actually used RBs in the downlink channel and the number of available RBs in the downlink channel in the current preset period, and acquire updated CRS power according to the number of idle RBs and preset CRS power; specifically, the base station acquires the number of idle subcarriers according to the number of idle RBs, and acquires updated CRS power according to the number of idle subcarriers and preset CRS power. Specifically, the specific manner of obtaining the updated CRS power may refer to the related description in the above embodiment, which is not described herein again. And updating the CRS power to be the sum of the preset CRS power and the CRS power which can be provided by the number of idle subcarriers.
And S206, updating the CRS power of the cell from the preset CRS power to the updated CRS power.
After acquiring the updated CRS power, the base station updates the CRS power of the cell from the preset CRS power to the updated CRS power, and specifically, the base station resets the CRS power of the cell to be set as the updated CRS power.
The specific implementation of S201 to S204 may refer to the related descriptions in S101 to S104 in the above embodiments, which are not described herein again.
In this embodiment, the base station may convert an unused or allocated idle RB on a traffic channel into cell CRS power, and may further improve the downlink coverage strength when the downlink is low-load; furthermore, before the CRS power of the cell is updated, the CRS power of the cell is set to be the preset CRS power, so that the phenomenon that the power of the CRS of the cell is frequently updated by a base station to cause heavy load of the base station and the power of the CRS of the cell is frequently updated to cause large power consumption of the base station is avoided.
On the basis of the foregoing embodiment, the following further describes the method for adaptively adjusting downlink coverage provided by the present invention with reference to fig. 3, where fig. 3 is a schematic flow chart of the method for adaptively adjusting downlink coverage provided by the present invention, and as shown in fig. 3, the method for adaptively adjusting downlink coverage provided by the present invention may include:
s301, determining whether the number of downlink groups receiving the service in the preset period is within a preset threshold range, if so, executing S302, and if not, executing S307.
S302, when the number of downlink groups receiving the service in the preset period is within the preset threshold range, the utilization rate of the Resource Block (RB) in the downlink channel in the preset period is obtained.
S303, determining whether the RB utilization is less than a first utilization threshold, if so, executing S304, otherwise, executing S309.
And S304, when the RB utilization rate is less than a first utilization rate threshold value, determining that the downlink is low load.
S305, acquiring updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel and the preset cell reference signal CRS power.
And S306, updating the CRS power of the cell from the preset CRS power to the updated CRS power.
S307, when the number of downlink groups is not within the threshold range, determine whether the number of downlink groups is 0, if yes, execute S308, otherwise execute S302.
When the base station determines that the number of downlink groups in the preset period is not within the threshold range, for example, when the number of downlink groups is not within the threshold range of (0,A), the base station determines whether the number of downlink groups is 0, that is, the base station determines whether the number of downlink groups is a cell initialization stage, where the cell initialization stage is a stage in which a group is not established in a cell when the cell is just established, and the number of downlink groups is 0 at this time.
And S308, when the number of the downlink groups is 0, determining that the downlink is in high load, and the CRS power of the cell is the preset CRS power.
When the base station judges that the number of the downlink groups is 0, the base station can determine that the downlink is in a cell initialization stage at the moment, so that the downlink is determined to be high-load, and the CRS power of the cell is set to be the preset CRS power. In a cell initialization stage, a base station sets the power of a cell CRS to a preset CRS power, mainly aiming at avoiding the problem that a service cannot be smoothly performed due to an excessively large number of group establishments. In the cell initialization stage, if too much power is allocated to the CRS power of the cell, the number of RBs available in the traffic channel of the group may be too small, and the quality of service acquisition cannot be smoothly performed.
S309, when the RB utilization rate is larger than the first utilization rate threshold, judging whether the RB utilization rate is larger than a second utilization rate threshold, wherein the second utilization rate threshold is larger than the first utilization rate threshold.
When the base station determines that the number of downlink groups in the preset period is within the preset threshold range, but the RB utilization is greater than the first utilization threshold, it is further determined whether the RB utilization is greater than a second utilization threshold, where the second utilization threshold is greater than the first utilization threshold, and the second utilization threshold is also stored in the base station in advance, and the setting mode may be the same as that of the first utilization threshold, which is not described herein again.
And S310, when the RB utilization rate is greater than the second utilization rate threshold value, determining that the downlink is high-load, and the CRS power of the cell is preset CRS power.
And when the base station judges that the RB utilization rate is greater than the second utilization rate threshold value, determining that the downlink is high-load, and at the moment, in order to ensure the smooth operation of the downlink service, the CRS power of the cell is the preset CRS power. Conceivably, if the power of the cell CRS is the preset CRS power before the base station determines that the downlink is high-load, the base station keeps the power of the cell CRS unchanged; before the base station determines that the downlink is in high load, when the CRS power of the cell is the updated CRS power, the CRS power of the cell of the base station is updated to the preset CRS power from the updated CRS power.
The specific implementation of S301 to S306 can refer to the related descriptions in S201 to S206 in the above embodiments, and will not be described herein again.
In this embodiment, when the base station determines that the number of downlink groups is not within the threshold range, it determines whether the number of downlink groups is 0 to determine whether the state of the cell is an initialized state, and when the RB utilization is greater than the first utilization threshold, it determines whether the RB utilization is greater than the second utilization threshold, and if the number of downlink groups is 0 or the RB utilization is greater than the second utilization threshold, it determines that the downlink is a high load, and in these two cases, the CRS power of the cell is set to be the preset CRS power, thereby ensuring smooth operation of the cell service.
Fig. 4 is a schematic structural diagram of a base station according to the present invention, as shown in fig. 4, the base station 400 includes: the RB information processing apparatus includes a group number judgment module 401, an RB utilization obtaining module 402, an RB utilization judgment module 403, a determination module 404, and an update module 405.
The group number determining module 401 is configured to determine whether the number of downlink groups receiving a service in a preset period is within a preset threshold range.
An RB utilization obtaining module 402, configured to obtain, when the number of downlink groups is within a preset threshold range, a utilization rate of a resource block RB in a downlink channel in a preset period, where the utilization rate of the RB is a ratio of an actually used number of RBs in the downlink channel to an available number of RBs in the downlink channel in the preset period.
An RB utilization determining module 403, configured to determine whether the RB utilization is smaller than a first utilization threshold.
A determining module 404 for determining that the downlink is low load when the RB utilization is less than a first utilization threshold.
An updating module 405, configured to update a cell CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power, where the preset CRS power is a CRS power set by the base station according to a radio remote unit RRU power and the number of RBs available in the downlink channel.
The base station provided in this embodiment is similar to the principle and technical effect of the implementation of the method for adaptively adjusting downlink coverage, and is not described herein again.
Optionally, fig. 5 is a schematic structural diagram of a base station provided in the present invention, and as shown in fig. 5, the base station 400 may further include: a preset CRS power acquisition module 406.
A preset CRS power obtaining module 406, configured to obtain the number of available subcarriers according to the number of available RBs in the downlink channel;
and acquiring preset CRS power according to the RRU power and the number of the available subcarriers.
Optionally, the updating module 405 is specifically configured to obtain updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power;
and updating the CRS power of the cell from the preset CRS power to the updated CRS power.
Optionally, the group number determining module 401 is further configured to determine whether the number of downlink groups is 0 when the number of downlink groups is not within the threshold range.
The determining module 404 is further configured to determine that the downlink is high-load and the cell CRS power is a preset CRS power when the number of downlink groups is 0.
The RB utilization obtaining module 402 is further configured to obtain a resource block RB utilization in a downlink channel in a preset period when the number of the downlink groups is not 0.
Optionally, the RB utilization determining module 403 is further configured to determine whether the RB utilization is greater than a second utilization threshold when the RB utilization is greater than the first utilization threshold, where the second utilization threshold is greater than the first utilization threshold.
The determining module 404 is further configured to determine that the downlink is high-load and the cell CRS power is the preset CRS power when the RB utilization is greater than the second utilization threshold.
Optionally, the updating module 405 is further specifically configured to obtain the number of idle RBs in the downlink channel according to the number of RBs actually used in the downlink channel and the number of RBs available in the downlink channel;
and acquiring updated CRS power according to the number of idle RBs and the preset CRS power.
Optionally, the updating module 405 is further configured to obtain the number of idle subcarriers according to the number of idle RBs;
and acquiring updated CRS power according to the number of idle subcarriers and the preset CRS power.
Fig. 6 is a schematic structural diagram of a base station provided in the present invention, where the base station may be, for example, a terminal device, such as a smart phone, a tablet computer, a computer, and the like. As shown in fig. 6, the base station 500 includes: a memory 501 and at least one processor 502.
A memory 501 for storing program instructions.
The processor 502 is configured to implement the method for adaptively adjusting downlink coverage in this embodiment when the program instruction is executed, and the specific implementation principle may refer to the foregoing embodiment, which is not described herein again.
The base station 500 may also include an input/output interface 503.
The input/output interface 503 may include a separate output interface and input interface, or may be an integrated interface that integrates input and output. The output interface is used for outputting data, the input interface is used for acquiring input data, the output data is a general name output in the method embodiment, and the input data is a general name input in the method embodiment.
The present invention also provides a readable storage medium, where an execution instruction is stored in the readable storage medium, and when the execution instruction is executed by at least one processor of a base station, and when the execution instruction is executed by the processor, the method for adaptively adjusting downlink coverage in the above embodiments is implemented.
The present invention also provides a program product comprising execution instructions stored in a readable storage medium. The at least one processor of the base station may read the execution instruction from the readable storage medium, and the execution of the execution instruction by the at least one processor causes the base station to implement the method for downlink coverage adaptive adjustment provided in the foregoing various embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the foregoing embodiments of the network device or the terminal device, it should be understood that the Processor may be a Central Processing Unit (CPU), or may be other general-purpose processors, digital Signal Processors (DSP), application Specific Integrated Circuits (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. A method for downlink coverage adaptive adjustment is characterized by comprising the following steps:
judging whether the number of downlink groups receiving the service in a preset period is within a preset threshold range;
if so, acquiring the RB utilization rate of the resource blocks in the downlink channel in the preset period, wherein the RB utilization rate is the ratio of the number of the RBs actually used in the downlink channel to the number of the RBs available in the downlink channel in the preset period;
judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not;
if yes, determining that the downlink is low in load;
updating the CRS power of the cell according to the number of RBs actually used in the downlink channel, the number of available RBs in the downlink channel and the CRS power of a preset cell reference signal, wherein the preset CRS power is the CRS power set by the base station according to the RRU power and the number of available RBs in the downlink channel;
the updating cell CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel and the preset cell reference signal CRS power includes:
acquiring updated CRS power according to the number of RBs actually used in the downlink channel, the number of available RBs in the downlink channel and the CRS power of a preset cell reference signal;
and updating the CRS power of the cell from a preset CRS power to the updated CRS power.
2. The method of claim 1, wherein before determining whether the RB utilization is less than a first utilization threshold, further comprising:
when the downlink group number is not in the threshold range, judging whether the downlink group number is 0 or not;
if yes, determining that a downlink is high-load, and the cell CRS power is the preset CRS power;
and if not, acquiring the utilization rate of the resource block RB in the downlink channel in the preset period.
3. The method of claim 2, further comprising: when the RB utilization rate is larger than a first utilization rate threshold value, judging whether the RB utilization rate is larger than a second utilization rate threshold value, wherein the second utilization rate threshold value is larger than the first utilization rate threshold value;
and if so, determining that the downlink is high-load, and the cell CRS power is the preset CRS power.
4. The method according to any one of claims 1 to 3, wherein the obtaining updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power comprises:
acquiring the number of idle RBs in the downlink channel according to the number of the RBs actually used in the downlink channel and the number of the available RBs in the downlink channel;
and acquiring the updated CRS power according to the number of the idle RBs and the preset CRS power.
5. The method of claim 4, wherein the obtaining the updated CRS power according to the number of idle RBs in the downlink channel and the preset CRS power comprises:
acquiring the number of idle subcarriers according to the number of the idle RBs;
and acquiring the updated CRS power according to the number of idle subcarriers and the preset CRS power.
6. The method of claim 5, wherein before obtaining updated CRS power, further comprising:
acquiring the number of available subcarriers according to the number of available RBs in the downlink channel;
and acquiring the preset CRS power according to the RRU power and the number of the available subcarriers.
7. A base station, comprising:
the group number judging module is used for judging whether the number of downlink groups for receiving the service in a preset period is within a preset threshold range;
an RB utilization obtaining module, configured to obtain, when the number of downlink groups is within a preset threshold range, a resource block RB utilization in a downlink channel in the preset period, where the RB utilization is a ratio of an actually used number of RBs in the downlink channel to an available number of RBs in the downlink channel in the preset period;
the RB utilization rate judging module is used for judging whether the RB utilization rate is smaller than a first utilization rate threshold value or not;
a determining module to determine that a downlink is low load when the RB utilization is less than the first utilization threshold;
an updating module, configured to update cell CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power, where the preset CRS power is a CRS power set by a base station according to a radio remote unit RRU power and the number of RBs available in the downlink channel;
the updating module is further configured to obtain updated CRS power according to the number of RBs actually used in the downlink channel, the number of RBs available in the downlink channel, and a preset cell reference signal CRS power; and updating the CRS power of the cell from a preset CRS power to the updated CRS power.
8. A base station, comprising: at least one processor and a memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the base station to perform the method of any of claims 1-6.
9. A computer-readable storage medium having computer-executable instructions stored thereon which, when executed by a processor, implement the method of any one of claims 1-6.
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