CN113709773B - Method and device for determining transmitting power of AP - Google Patents
Method and device for determining transmitting power of AP Download PDFInfo
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- CN113709773B CN113709773B CN202111000472.3A CN202111000472A CN113709773B CN 113709773 B CN113709773 B CN 113709773B CN 202111000472 A CN202111000472 A CN 202111000472A CN 113709773 B CN113709773 B CN 113709773B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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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
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/143—Downlink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
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Abstract
The invention discloses a method and a device for determining the transmitting power of an AP (access point), which are used for improving the accuracy of AP transmitting power planning and improving the wireless communication quality. The method is applied to an Access Controller (AC), at least two APs access the AC, and comprises the following steps: acquiring initial received signal strength RSSI when the AP to be adjusted in the at least two APs receives wireless signals of other APs; determining each effective RSSI from each initial RSSI; and determining the actual transmitting power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmitting power of the AP to be adjusted and the maximum transmitting power of the AP to be adjusted.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for determining transmit power of an AP.
Background
WLAN (Wireless LAN) system based on 802.11 protocol expands traditional wired network, provides more convenient and flexible access service for users, and has been widely used in campus, hotel, market, hospital, office building and other fields. A WLAN system mainly comprises three parts, namely an Access Point (AP), an Access Controller (AC) Access Controller and a Station (STA). Due to the characteristic of wireless transmission, the whole network AP needs to design a reasonable transmitting power distribution scheme so as to avoid overlapping and coverage dead zones and influence user experience.
The current transmit power determination schemes mainly have two kinds, one is to locally adjust according to the RSSI (Received Signal Strength Indicator, received signal strength indication) of the STA, i.e. manually set a threshold value of the RSSI, and the AC determines to increase or decrease the transmit power of the AP according to the value and the threshold value of the RSSI of each STA associated under the AP. Such an adjustment is effective when the number of STAs is small, and if the number of STAs is large and the distances from the associated AP are not the same, it is difficult to determine an appropriate power adjustment value. And the other is to perform whole network adjustment according to an AP air interface scanning result, namely, the AC establishes a neighbor relation of the whole network AP based on air interface environment information reported by the AP, and determines the transmitting power of the AP according to a preset threshold value and adjustment amplitude. The adjustment mode is often dependent on practical experience of constructors to determine the threshold value and the adjustment amplitude, deviation is easy to generate, accuracy is not high enough, the adjustment mode can only be used in specific scenes (such as hotels and high education), and all practical networks are difficult to adapt. Therefore, the current transmission power determination scheme cannot reasonably determine the transmission power of the AP, resulting in degradation of wireless communication quality.
Disclosure of Invention
The invention provides a method and a device for determining the transmitting power of an AP, which are used for improving the planning precision of the transmitting power of the AP and improving the wireless communication quality.
In a first aspect, the present invention provides a method for determining a transmit power of an AP. The method can be applied to access to the AC, at least two APs access to the AC, and the method comprises the following steps:
acquiring initial RSSI when the AP to be adjusted in the at least two APs receives wireless signals of other APs; determining each effective RSSI from each initial RSSI; and determining the actual transmitting power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmitting power of the AP to be adjusted and the maximum transmitting power of the AP to be adjusted.
Based on the method, the AC determines the effective RSSI according to the initial RSSI when the AP to be adjusted receives wireless signals of other APs, and further determines the actual transmission power of the AP to be adjusted according to the effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmission power of the AP to be adjusted and the maximum transmission power of the AP to be adjusted, so that the transmission power of the AP can be reasonably planned, the accuracy of the transmission power planning is improved, and the wireless communication quality is further improved.
In one possible design, the determining each valid RSSI from each initial RSSI includes: comparing each initial RSSI with the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval respectively; and acquiring RSSIs which are larger than the upper limit of the power coverage overlapping interval or smaller than the lower limit of the power coverage overlapping interval in each initial RSSI, and obtaining each effective RSSI.
By adopting the design, the AC can screen the effective RSSI according to specific conditions, so that partial calculation is omitted, the calculation speed of the transmitting power is improved, and the waste of calculation resources is avoided.
In one possible design, the determining the actual transmission power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlap interval, the lower limit of the power coverage overlap interval, the current transmission power of the AP to be adjusted, and the maximum transmission power of the AP to be adjusted includes: determining the power variation of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmitting power of other APs corresponding to each effective RSSI; and determining the actual transmitting power of the AP to be adjusted according to the current transmitting power of the AP to be adjusted, the maximum transmitting power of the AP to be adjusted, the total number of each effective RSSI and the power variation.
In one possible design, the determining the power variation of the AP to be adjusted according to each valid RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, and the current transmission power of other APs corresponding to each valid RSSI includes: determining power change components of the to-be-adjusted AP relative to other APs corresponding to the effective RSSIs according to the effective RSSIs, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmission power of the other APs corresponding to the effective RSSIs; and adding the power variation components to obtain the power variation of the AP to be adjusted.
In one possible design, the determining the power variation component of the AP to be adjusted relative to other APs corresponding to each effective RSSI according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, and the current transmission power of other APs corresponding to each effective RSSI includes: and determining the power change components of the AP to be adjusted relative to other APs corresponding to each effective RSSI according to the following formula:
wherein A is i,j For the power variation component of the to-be-adjusted AP relative to other APs corresponding to each effective RSSI, i is the number of the to-be-adjusted AP, j is the number of the other APs corresponding to each effective RSSI, and P j For the current transmitting power of other APs corresponding to each effective RSSI, thresh avg R is the average value of the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval i,j For each valid RSSI.
In one possible design, the determining the actual transmission power of the AP to be adjusted according to the current transmission power of the AP to be adjusted, the maximum transmission power of the AP to be adjusted, the total number of each effective RSSI, and the power variation includes:
determining the actual transmitting power of the AP to be adjusted according to the following formula:
wherein P' i For the actual transmitting power of the AP to be adjusted, P i For the current transmitting power of the AP to be adjusted, count i Delta for the total number of each effective RSSI i P is the power variation of the AP to be adjusted i max And the maximum transmitting power of the AP to be adjusted is set.
In a second aspect, the present invention further provides a device for determining a transmitting power of an AP, where the device includes:
and the receiving and transmitting module is used for acquiring initial RSSI when the AP to be adjusted in the at least two APs receives wireless signals of other APs.
And the processing module is used for determining each effective RSSI from each initial RSSI, and determining the actual transmitting power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmitting power of the AP to be adjusted and the maximum transmitting power of the AP to be adjusted.
In one possible design, the processing module is specifically configured to: comparing each initial RSSI with the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval respectively; and acquiring RSSIs which are larger than the upper limit of the power coverage overlapping interval or smaller than the lower limit of the power coverage overlapping interval in each initial RSSI, and obtaining each effective RSSI.
In one possible design, the processing module is specifically configured to: determining the power variation of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmitting power of other APs corresponding to each effective RSSI; and determining the actual transmitting power of the AP to be adjusted according to the current transmitting power of the AP to be adjusted, the maximum transmitting power of the AP to be adjusted, the total number of each effective RSSI and the power variation.
In one possible design, the processing module is specifically configured to: determining power change components of the to-be-adjusted AP relative to other APs corresponding to the effective RSSIs according to the effective RSSIs, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmission power of the other APs corresponding to the effective RSSIs; and adding the power variation components to obtain the power variation of the AP to be adjusted.
In one possible design, the processing module is specifically configured to: and determining the power change components of the AP to be adjusted relative to other APs corresponding to each effective RSSI according to the following formula:
wherein A is i,j For the power variation component of the to-be-adjusted AP relative to other APs corresponding to each effective RSSI, i is the number of the to-be-adjusted AP, j is the number of the other APs corresponding to each effective RSSI, and P j For the current transmitting power of other APs corresponding to each effective RSSI, thresh avg R is the average value of the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval i,j For each valid RSSI.
In one possible design, the processing module is specifically configured to: determining the actual transmitting power of the AP to be adjusted according to the following formula:
wherein P' i For the actual transmitting power of the AP to be adjusted, P i For the current transmitting power of the AP to be adjusted, count i Delta for the total number of each effective RSSI i P is the power variation of the AP to be adjusted i max And the maximum transmitting power of the AP to be adjusted is set.
Optionally, the apparatus is in the form of an electronic device, a chip system, a circuit, or the like, and is not particularly limited.
In a third aspect, the present invention also provides a computer readable storage medium storing a computer program which when executed by a processor implements the steps of a transmit power determination method as described in the first aspect and any one of its possible designs.
In a fourth aspect, the invention also provides a computer program product which, when executed in a computer, enables the computer to implement the steps of a transmit power determination method as described in the first aspect and any one of its possible designs.
In addition, the advantages of the second aspect to the fourth aspect may be referred to as the advantages of the first aspect, and will not be described here.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for determining transmit power of an AP according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for determining a transmitting power of an AP according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for determining transmission power of an AP according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another apparatus for determining transmission power of an AP according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to improve accuracy of an AP transmitting power planning method, the embodiment of the invention provides a transmitting power determining method and a transmitting power determining device.
Fig. 1 is a flow chart of a method for determining transmission power of an AP according to an embodiment of the present invention, where the process includes the following steps:
s101: and acquiring initial RSSI of the at least two APs when the APs to be adjusted receive the wireless signals of the other APs.
Illustratively, one AC may manage n APs, which may be labeled as APs, respectively 1 、AP 2 …AP i …AP n . Wherein the AC managing AP may, but is not limited to, include that the AC may determine the actual transmit power of the individual APs.
In S101, the AC may use any one of the n APs as the AP to be adjusted, and acquire an initial RSSI when the AP to be adjusted receives the wireless signals of the other APs of the n APs. Wherein, AP i Receiving AP j The initial RSSI at the time of the wireless signal of (a) may be marked as r i,j I, j=1, 2 … … n, n being a positive integer.
It should be understood that the AC may determine the AP to be adjusted by using a polling method, for example, the n APs are respectively numbered, the AP to be adjusted is determined from the n APs in order of the numbers from small to large or from large to small, and the actual transmission power of the AP to be adjusted is determined according to the method provided in the present application.
In one possible implementation, the AC may send an instruction to the AP to be adjusted, where the instruction is used to instruct the AP to be adjusted to obtain the initial RSSI of each other AP. The AC may also receive the initial RSSI from the AP to be adjusted.
Exemplary, let the AP to be adjusted be an AP 1 The AC may send to the AP 1 And sending a first instruction. AP (Access Point) 1 After receiving the first instruction, performing air interface scanning to detect wireless signals sent by other APs to obtain a wireless signal scanning result, where the wireless signal scanning result may include the AP 1 RSSI of radio signals transmitted by other detected APs, i.e. APs 1 May also include a BSS ID (Basic Service Set Identifier, basic service set identification) of the wireless signal, etc. The AC may receive data from the AP 1 Wireless signal scan results of (a).
Similarly, the AP to be adjusted may be any AP of n APs i The AC may obtain the AP as follows 1 The initial RSSI of each other AP is obtained by way of the initial RSSI of each other AP.
Alternatively, the AC may establish a neighbor signal strength matrix according to the acquired initial RSSI of each AP.
Specifically, the AC establishes a neighbor signal strength matrix according to the acquired initial RSSIs reported by n APs to be adjusted, wherein the elements in the matrix are r i,j . When the AP is to be adjusted i When the RSSI of the wireless signal transmitted from a certain AP is not detected and/or when the AP to be adjusted i When receiving the wireless signal RSSI transmitted by the self, i.e. i=j, the element r in the matrix is formed i,j The value of (2) is recorded as 0. The matrix is established, so that the intensity of the received signal between the APs is more visual, and the accuracy of the transmission power planning can be improved by carrying out the transmission power planning of the whole network APs based on the information of the matrix.
S102: each valid RSSI is determined from each initial RSSI.
Alternatively to this, the method may comprise,the effective RSSI is the RSSI of the initial RSSI that satisfies conditions that may include: the value of the effective RSSI falls within a range that does not include, for example, 0 and a value within a power coverage overlap interval that may be used to indicate an acceptable power range for coverage overlap between APs. For example, in the neighbor signal strength matrix, the effective RSSI is r with a value other than 0 and less than the lower limit of the power coverage overlap interval or greater than the upper limit of the power coverage overlap interval i,j 。
Here still in AP 1 The implementation of S102 is described for example.
Specifically, the AC may respectively compare the APs 1 Comparing each initial RSSI of the (E) with the upper limit and the lower limit of the power coverage overlapping interval to obtain an AP 1 RSSI larger than the upper limit or smaller than the lower limit of the power coverage overlapping interval in each initial RSSI of the (a) to obtain the AP 1 Is included in the Received Signal Strength Indicator (RSSI). The upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval can be manually configured, can be obtained empirically or can be obtained through training according to an algorithm, and are not limited in the application. In actual use, a reasonable upper limit and a reasonable lower limit of the power coverage overlapping interval can be set according to different network environments and actual demands, so that the planning of the transmitting power is more flexible and reasonable.
Exemplary, set an AP 1 Is r 1,j ，thresh max Represents the upper limit of the power coverage overlap interval, thresh min Indicating the lower limit of the power coverage overlap interval, if r 1,j Is not zero, and r 1,j ＞thresh max Or r 1,j ＜thresh min Then r is as follows 1,j A valid RSSI is determined. Alternatively, for AP 1 ，r 1,1 Not belonging to a valid RSSI, or i+.j. In the present application, an AP may be i The total number of effective RSSIs of (1) is recorded as count i 。
S103: and determining the actual transmitting power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmitting power of the AP to be adjusted and the maximum transmitting power of the AP to be adjusted.
Specifically, the actual transmission power of the AP to be adjusted may be determined according to each effective RSSI, an upper limit of a power coverage overlap interval, a lower limit of a power coverage overlap interval, the current transmission power of the AP to be adjusted, and the maximum transmission power of the AP to be adjusted. The maximum transmit power of the AP to be adjusted is the maximum of the transmit powers supported by the AP to be adjusted, which may be considered a known amount for the AC.
Alternatively, the AC may send the calculated actual transmission power of the AP to be adjusted to the AP to be adjusted.
By adopting the method shown in fig. 1, the AC can determine the effective RSSI in the initial RSSI based on the initial RSSI when the AP to be adjusted receives the wireless signals of other APs, and further determine the actual transmission power of the AP to be adjusted according to the upper limit of the effective RSSI power coverage overlapping section, the lower limit of the power coverage overlapping section, the current transmission power of the AP to be adjusted and the maximum transmission power of the AP to be adjusted, so that the coverage overlapping between the AP to be adjusted and other APs can be controlled in a proper range more accurately, and the accuracy of the transmission power determining method is improved, and therefore, the wireless communication quality can be improved.
In one possible embodiment, the steps shown in S103 above may be implemented by the steps shown in fig. 2:
s201: and determining the power variation of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmitting power of other APs corresponding to each effective RSSI.
In one possible embodiment, the AC may determine, according to each effective RSSI, an upper limit of a power coverage overlap interval, a lower limit of the power coverage overlap interval, and current transmission powers of other APs corresponding to each effective RSSI, a power variation component of the AP to be adjusted relative to the other APs corresponding to each effective RSSI; and adding the power variation components to obtain the power variation of the AP to be adjusted.
Specifically, assume that the AP to be adjusted is an AP i ，AP i The current transmit power may be denoted as P i ，AP j The current transmit power may be denoted as P j . With AP i Receiving AP j The initial RSSI at the time of the wireless signal of (1) is denoted as r i,j For example, assuming that each initial RSSI is a valid RSSI, the AC may determine the power variation component of the AP to be adjusted relative to other APs corresponding to each valid RSSI according to the following formula:
wherein A is i,j For the power variation component of the AP to be adjusted relative to other APs corresponding to each effective RSSI, i is the number of the AP to be adjusted, j is the number of the other APs corresponding to each effective RSSI, and P j For the current transmitting power of other APs corresponding to each effective RSSI, thresh avg Is the average value between the power coverage areas.
In another possible implementation, the AP to be adjusted is still the AP i For example, AP i Receiving AP j The initial RSSI at the time of the wireless signal of (1) is denoted as r i,j For the convenience of calculation, assuming that each initial RSSI is a valid RSSI, the AC may determine the attenuation amplitude of the current transmission power of other APs corresponding to each valid RSSI according to the following formula:
wherein loss is i,j Represents the attenuation amplitude of the current transmission power of other APs corresponding to each effective RSSI, P j For the current transmitting power of other APs corresponding to each effective RSSI, i is the number of the AP to be adjusted, j is the number of other APs corresponding to each effective RSSI, and i is not equal to j.
Further, assuming that each initial RSSI is a valid RSSI, the AC may further determine a power variation component of the AP to be adjusted relative to other APs corresponding to each valid RSSI according to the following formula:
wherein, wherein A i,j For the power variation component of the AP to be adjusted relative to other APs corresponding to each effective RSSI, i is the number of the AP to be adjusted, j is the number of the other APs corresponding to each effective RSSI, and thresh avg I+.j is the average between power footprints.
Illustratively, the average value between power coverage areas, the upper limit of the power coverage overlap interval, and the lower limit of the power coverage overlap interval satisfy:
wherein thresh avg Representing the average value between power coverage areas, thresh max Represents the upper limit of the power coverage overlap interval, thresh min Indicating the lower limit of the power coverage overlap interval.
In obtaining A by any one of the possible implementations above i,j The AC may then add the power variation components to obtain the power variation of the AP to be adjusted.
Specifically, the power variation components of the to-be-adjusted AP relative to other APs corresponding to each effective RSSI and the power variation of the to-be-adjusted AP satisfy:
wherein delta is i Representing an AP to be adjusted i Power variation of A i,j Representing an AP to be adjusted i Other APs corresponding to respective effective RSSIs j I is the number of the AP to be adjusted, j is the number of the other AP corresponding to each effective RSSI, i not equal to j.
S202: and determining the actual transmitting power of the AP to be adjusted according to the current transmitting power of the AP to be adjusted, the maximum transmitting power of the AP to be adjusted, the total number of each effective RSSI and the power variation.
Specifically, the AC may determine the actual transmit power of the AP to be adjusted according to the following formula:
wherein P' i To adjust the actual transmitting power of the AP, P i To adjust the current transmit power of the AP, count i Delta for the total number of each effective RSSI i To adjust the power variation of AP, P i max For the maximum transmitting power of the AP to be adjusted, i is the number of the AP to be adjusted, j is the number of other APs corresponding to each effective RSSI, and i is not equal to j.
It should be understood that the flow shown in fig. 2 may also be implemented independently of the flow shown in fig. 1. For example, when the initial RSSI and the valid RSSI of the AP to be adjusted when receiving the wireless signals of the other APs are already stored in the AC, the AC may determine the actual transmission power of the AP to be adjusted according to the flow shown in fig. 2, where the AC is no longer required to obtain the initial RSSI of the AP to be adjusted when receiving the wireless signals of the other APs from the AP to be adjusted, and determine the valid RSSI.
Alternatively, the present solution may be applied to an ad hoc network environment. In the ad hoc network environment, the master AP may take the role of AC in this solution, that is, the master AP determines the actual transmitting power of the master AP and the slave AP, and the specifically performed actions and functions are not specifically developed herein, which may be referred to in the description of the foregoing method embodiment section. By adopting the method, the scheme is compatible with more network environments, and the scheme applicability is improved.
The embodiment of the application also provides a device for determining the transmitting power of the AP based on the same conception as the transmitting power determining method, which is used for realizing the method.
Fig. 3 is a schematic block diagram of a device for determining transmission power of an AP according to an embodiment of the present application. As shown in fig. 3, the processing module 301 may be configured to perform processing actions, and the transceiver module 302 may be configured to implement actions for determining transmit power. For example, when implementing the AC described in the above method embodiment through this structure, the transceiver module 302 may be configured to perform the step of acquiring initial RSSI of the AP to be adjusted among the at least two APs when the AP to be adjusted receives the wireless signal of each other AP in S101, and the processing module 301 may be configured to perform the step of determining each valid RSSI from each initial RSSI in S102 and/or perform the step of determining the actual transmit power of the AP to be adjusted in S103. The acts and functions that are specifically performed are not specifically expanded herein and reference is made to the description of the embodiments section of the method described above.
Optionally, in an embodiment of the present application, when implementing the AC described in the above method embodiment, the apparatus may further include a scanning module, a calculating module, and a configuring module. Wherein the scanning module may be used to perform S101 of the above method. The calculation module may be configured to perform the actions of determining the actual transmit power of the AP to be adjusted in S102 and/or S103 of the above method. Alternatively, the calculation module may be configured to perform S201 and/or S202 of the above method. The configuration module may be configured to perform the act of sending the actual transmit power of the AP to be adjusted to the AP to be adjusted in S103 of the above method.
Fig. 4 shows a schematic structural diagram of another AP transmit power determining apparatus according to an embodiment of the present application. As shown in fig. 4, the transmit power determining apparatus in the embodiment of the present application may include a processor 401. Processor 401 is a control center of the device and may connect the various parts of the device using various interfaces and lines by running or executing instructions stored in memory 402 and invoking data stored in memory 402. Alternatively, the processor 401 may include one or more processing units, and the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system and an application program, etc., and the modem processor mainly processes wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 401. In some embodiments, processor 401 and memory 402 may be implemented on the same chip, and in some embodiments they may be implemented separately on separate chips.
The processor 401 may be a general purpose processor such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, which may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps performed in connection with the AC disclosed in the embodiments of the present application may be performed directly by a hardware processor or may be performed by a combination of hardware and software modules in a processor.
In the embodiment of the present application, the memory 402 stores instructions executable by the at least one processor 401, and the at least one processor 401 may be configured to perform the foregoing transmit power determining process performed by the AC by executing the instructions stored in the memory 402.
Memory 402 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 402 may include at least one type of storage medium, which may include, for example, flash Memory, hard disk, multimedia card, card Memory, random access Memory (Random Access Memory, RAM), static random access Memory (Static Random Access Memory, SRAM), programmable Read-Only Memory (Programmable Read Only Memory, PROM), read-Only Memory (ROM), charged erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory), magnetic Memory, magnetic disk, optical disk, and the like. Memory 402 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 402 in the present embodiment may also be circuitry or any other device capable of implementing a memory function for storing program instructions and/or data.
In this embodiment of the present application, the apparatus may further include a communication interface 403, for implementing a wired and/or wireless transceiving function, and the apparatus may transmit data through the communication interface 403. For example, the transmit power determining device is an AC, and the communication interface 403 may be configured to send a first instruction to the AP to be adjusted and/or send an actual transmit power to the AP to be adjusted.
Optionally, the processing module 301 shown in fig. 3 may be implemented by the processor 401 (or the processor 401 and the memory 402) shown in fig. 4, and/or the transceiver module 302 shown in fig. 3 may be implemented by the communication interface 403.
Illustratively, when implementing the AC described in the above method embodiments through the structure shown in fig. 3 or fig. 4, the transceiver module 302 shown in fig. 3 and/or the communication interface 403 shown in fig. 4 may be used to obtain the initial RSSI when the AP to be adjusted of the at least two APs receives the wireless signals of each other AP. The processing module 301 shown in fig. 3, and/or the processor 401 (or the processor 401 and the memory 402) shown in fig. 4 may be configured to determine each valid RSSI from each initial RSSI, and determine the actual transmission power of the AP to be adjusted according to each valid RSSI, the upper limit of the power coverage overlap interval, the lower limit of the power coverage overlap interval, the current transmission power of the AP to be adjusted, and the maximum transmission power of the AP to be adjusted.
In one possible design, the processing module 301 shown in fig. 3, and/or the processor 401 (or the processor 401 and the memory 402) shown in fig. 4 are specifically configured to: comparing each initial RSSI with the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval respectively; and acquiring RSSIs which are larger than the upper limit of the power coverage overlapping interval or smaller than the lower limit of the power coverage overlapping interval in each initial RSSI, and obtaining each effective RSSI.
In one possible design, the processing module 301 shown in fig. 3, and/or the processor 401 (or the processor 401 and the memory 402) shown in fig. 4 are specifically configured to: determining the power variation of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmitting power of other APs corresponding to each effective RSSI; and determining the actual transmitting power of the AP to be adjusted according to the current transmitting power of the AP to be adjusted, the maximum transmitting power of the AP to be adjusted, the total number of each effective RSSI and the power variation.
In one possible design, the processing module 301 shown in fig. 3, and/or the processor 401 (or the processor 401 and the memory 402) shown in fig. 4 are specifically configured to: determining power change components of the to-be-adjusted AP relative to other APs corresponding to the effective RSSIs according to the effective RSSIs, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmission power of the other APs corresponding to the effective RSSIs; and adding the power variation components to obtain the power variation of the AP to be adjusted.
In one possible design, the processing module 301 shown in fig. 3, and/or the processor 401 (or the processor 401 and the memory 402) shown in fig. 4 are specifically configured to: and determining the power change components of the AP to be adjusted relative to other APs corresponding to each effective RSSI according to the following formula:
wherein A is i,j For the power variation component of the to-be-adjusted AP relative to other APs corresponding to each effective RSSI, i is the number of the to-be-adjusted AP, j is the number of the other APs corresponding to each effective RSSI, and P j For the current transmitting power of other APs corresponding to each effective RSSI, thresh avg R is the average value of the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval i,j For each valid RSSI.
In one possible design, the processing module 301 shown in fig. 3, and/or the processor 401 (or the processor 401 and the memory 402) shown in fig. 4 are specifically configured to: determining the actual transmitting power of the AP to be adjusted according to the following formula:
wherein P' i For the actual transmitting power of the AP to be adjusted, P i For the current transmitting power of the AP to be adjusted, count i Delta for the total number of each effective RSSI i P is the power variation of the AP to be adjusted i max And the maximum transmitting power of the AP to be adjusted is set.
Alternatively, the apparatus shown in fig. 3 and/or fig. 4 may be in the form of an electronic device, a chip, a system-on-chip, a circuit, or the like, and is not particularly limited.
Based on the same inventive concept, the present embodiments also provide a computer-readable storage medium in which instructions may be stored, which when run on a computer, cause the computer to perform the operational steps provided by the above-described method embodiments. The computer readable storage medium may be the memory 402 shown in fig. 4.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application 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, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (8)
1. A method for determining transmission power of Access Points (APs) applied to an Access Controller (AC), at least two APs accessing the AC, the method comprising:
acquiring initial received signal strength RSSI when the AP to be adjusted in the at least two APs receives wireless signals of other APs;
determining each effective RSSI from each initial RSSI;
determining the actual transmitting power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmitting power of the AP to be adjusted and the maximum transmitting power of the AP to be adjusted;
the actual transmitting power of the AP to be adjusted is determined, and the actual transmitting power of the AP to be adjusted is determined according to the following formula:
wherein P is i ' is the actual transmitting power of the AP to be adjusted, P i For the current transmitting power of the AP to be adjusted, count i Delta for the total number of each effective RSSI i P is the power variation of the AP to be adjusted i max The maximum transmitting power of the AP to be adjusted is set; and
the power variation of the AP to be adjusted is determined according to the following method:
determining power change components of the to-be-adjusted AP relative to other APs corresponding to the effective RSSIs according to the effective RSSIs, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmission power of the other APs corresponding to the effective RSSIs;
and adding the power variation components to obtain the power variation of the AP to be adjusted.
2. The method of claim 1, wherein determining each valid RSSI from each initial RSSI comprises:
comparing each initial RSSI with the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval respectively;
and acquiring RSSIs which are larger than the upper limit of the power coverage overlapping interval or smaller than the lower limit of the power coverage overlapping interval in each initial RSSI, and obtaining each effective RSSI.
3. The method of claim 1, wherein determining the power variation component of the AP to be adjusted relative to other APs corresponding to each valid RSSI based on each valid RSSI, the upper power coverage overlap interval limit, the lower power coverage overlap interval limit, and the current transmit power of other APs corresponding to each valid RSSI comprises:
and determining the power change components of the AP to be adjusted relative to other APs corresponding to each effective RSSI according to the following formula:
wherein A is i,j For the power variation components of the to-be-adjusted AP relative to other APs corresponding to each effective RSSI, i is the number of the to-be-adjusted AP, j is the number of the other APs corresponding to each effective RSSI，P j For the current transmitting power of other APs corresponding to each effective RSSI, thresh avg R is the average value of the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval i,j For each valid RSSI.
4. A device for determining transmission power of APs, applied in an AC, to which at least two APs access, the device comprising:
the receiving and transmitting module is used for acquiring initial received signal strength RSSI when the AP to be adjusted in the at least two APs receives wireless signals of other APs;
the processing module is used for determining each effective RSSI from each initial RSSI, and determining the actual transmitting power of the AP to be adjusted according to each effective RSSI, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval, the current transmitting power of the AP to be adjusted and the maximum transmitting power of the AP to be adjusted; the processing module is configured to determine an actual transmitting power of the AP to be adjusted according to the following formula:
wherein P is i ' is the actual transmitting power of the AP to be adjusted, P i For the current transmitting power of the AP to be adjusted, count i Delta for the total number of each effective RSSI i P is the power variation of the AP to be adjusted i max The maximum transmitting power of the AP to be adjusted is set; and
the processing module is used for determining power change components of the to-be-adjusted AP relative to other APs corresponding to the effective RSSIs according to the effective RSSIs, the upper limit of the power coverage overlapping interval, the lower limit of the power coverage overlapping interval and the current transmitting power of the other APs corresponding to the effective RSSIs; and adding the power variation components to obtain the power variation of the AP to be adjusted.
5. The apparatus of claim 4, wherein the processing module is specifically configured to:
comparing each initial RSSI with the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval respectively;
and acquiring RSSIs which are larger than the upper limit of the power coverage overlapping interval or smaller than the lower limit of the power coverage overlapping interval in each initial RSSI, and obtaining each effective RSSI.
6. The apparatus of claim 4, wherein the processing module is specifically configured to:
and determining the power change components of the AP to be adjusted relative to other APs corresponding to each effective RSSI according to the following formula:
wherein A is i,j For the power variation component of the to-be-adjusted AP relative to other APs corresponding to each effective RSSI, i is the number of the to-be-adjusted AP, j is the number of the other APs corresponding to each effective RSSI, and P j For the current transmitting power of other APs corresponding to each effective RSSI, thresh avg R is the average value of the upper limit of the power coverage overlapping interval and the lower limit of the power coverage overlapping interval i,j For each valid RSSI.
7. An electronic device comprising a processor for implementing the steps of the method according to any of claims 1-3 when executing a computer program stored in a memory.
8. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-3.
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