CN114978294A

CN114978294A - Power adjustment method and device, master station equipment and small station equipment

Info

Publication number: CN114978294A
Application number: CN202210902167.1A
Authority: CN
Inventors: 张强; 兰洋; 邹刚; 汪钰铭; 刘波
Original assignee: Wuxi Xinglian Xintong Technology Co ltd; Xinjiang Starlink Core Technology Co ltd; Chengdu Xinglian Xintong Technology Co ltd
Current assignee: Wuxi Xinglian Xintong Technology Co ltd; Xinjiang Starlink Core Technology Co ltd; Chengdu Xinglian Xintong Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-08-30
Anticipated expiration: 2042-07-29
Also published as: CN114978294B

Abstract

The embodiment of the invention provides a power adjustment method and device, master station equipment and small station equipment, and relates to the field of satellite communication. The method comprises the following steps: firstly, the master station equipment determines each first small station equipment group with carrier superposition according to a channel planning table; then, the master station equipment acquires a first target signal-to-noise ratio of a self sending channel, and sends a channel planning table, the first target signal-to-noise ratio and a first power adjustment instruction to each first small station equipment in each first small station equipment group; the first small station equipment establishes communication according to the channel planning table and the opposite end small station equipment, periodically acquires the signal-to-noise ratio of a transmission channel of the opposite end small station equipment according to the first power instruction, and transmits the signal-to-noise ratio to the opposite end small station equipment; and the first small station equipment receives the small station signal-to-noise ratio periodically sent by the opposite end small station equipment, and performs power adjustment according to the small station signal-to-noise ratio and the target signal-to-noise ratio.

Description

Power adjustment method and device, master station equipment and small station equipment

Technical Field

The invention relates to the field of satellite communication, in particular to a power adjusting method and device, master station equipment and small station equipment.

Background

In a satellite FDMA (Frequency Division Multiple Access) networking scenario, the master station device may perform channel planning and management on each of the small station devices, so that the small station devices communicate with each other through a satellite. The small station device has the advantage that the larger the transmission power of the transmission channel, the better the communication quality, but since the maximum power that the satellite can transmit is constant, the small station device needs to adjust the power of its own transmission channel, that is, perform uplink power adjustment, in order not to affect the communication quality of other small station devices.

In the prior art, a manual monitoring mode is often adopted to monitor a signal-to-noise ratio of a transmission channel of a small station device to determine a target signal-to-noise ratio, and uplink power adjustment is performed according to the target signal-to-noise ratio and the signal-to-noise ratio of the transmission channel. However, the above uplink power adjustment method is not accurate enough and has low efficiency.

Disclosure of Invention

The present invention provides a power adjustment method, a device, a master station device and a small station device, for example, which can send a signal-to-noise ratio of a transmission channel of the master station device as a target signal-to-noise ratio to the small station device in a carrier superposition scenario, and the small station device performs power adjustment according to the target signal-to-noise ratio and the signal-to-noise ratio of the transmission channel of the small station device, so as to implement automatic uplink power adjustment.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, an embodiment of the present invention provides a power adjustment method, which is applied to a master station device, where a channel planning table is stored in advance in the master station device, and the channel planning table includes channel information of each small station device communicating with the master station device; the method comprises the following steps:

determining each first small station equipment group with carrier superposition according to the channel planning table, wherein the small station equipment group comprises two first small station equipment;

acquiring a first target signal-to-noise ratio of a self sending channel;

for each first small station equipment group, sending the channel planning table, the first target signal-to-noise ratio and a first power adjustment instruction to each first small station equipment in the first small station equipment group, so that the first small station equipment performs power adjustment according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio;

the channel planning table is used for establishing communication between two first small station devices in the first small station device group; the signal-to-noise ratio of the first small station is the signal-to-noise ratio of a transmission channel of the first small station equipment, and the signal-to-noise ratio is periodically acquired by the opposite small station equipment according to the first power adjustment instruction.

In one possible embodiment, the method further comprises:

acquiring each second small station equipment group without carrier superposition, wherein the second small station equipment group comprises two second small station equipment;

for each second small station device group, sending the channel planning table and a second power adjustment instruction to each second small station device in the second small station device group, where the channel planning table is used for establishing communication between two second small station devices in the second small station device group, and the second power adjustment instruction is used for instructing the second small station device to periodically acquire a signal-to-noise ratio of a transmission channel of an opposite-end small station device and return the signal-to-noise ratio to the master station device;

and aiming at each second small station device in the second small station device group, calculating a second target signal-to-noise ratio according to a second small station signal-to-noise ratio of the second small station device, and sending the second target signal-to-noise ratio and the second small station signal-to-noise ratio to the second small station device so that the second small station device can carry out power adjustment according to the second target signal-to-noise ratio and the second small station signal-to-noise ratio, wherein the second small station signal-to-noise ratio is the signal-to-noise ratio of a sending channel of the second small station device, and is periodically acquired by the opposite small station device according to the second power adjustment instruction.

In a possible implementation manner, the channel information of two first small station devices in the first small station device group is consistent, and the frequency points of the transmission channel and the reception channel of each first small station device are consistent.

In a possible implementation manner, the step of adjusting uplink power by the first small station device according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio includes:

calculating a first absolute difference value between the signal-to-noise ratio of the first small station and the first target signal-to-noise ratio according to the signal-to-noise ratio of the first small station sent by the opposite-end small station equipment in the current period;

if the first absolute difference value is larger than or equal to a preset value, determining an adjustment power value according to the signal-to-noise ratio of the first small station and the first target signal-to-noise ratio;

and adjusting the sending power of a sending channel of the small station equipment according to the adjusting power value, the first small station signal-to-noise ratio and the first target signal-to-noise ratio.

In a possible implementation, the step of determining an adjustment power value according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio includes:

when the signal-to-noise ratio of the first small station belongs to a nonlinear area, taking a back-off power value as the adjusting power value;

if the signal-to-noise ratio of the first small station is the signal-to-noise ratio of the first small station acquired by the opposite end small station device in the first period, the backoff power value is a preset power value; if the signal-to-noise ratio of the first small station is not the signal-to-noise ratio of the first small station acquired by the opposite end small station device in the first period, the backoff power value is the corresponding adjustment power value of the previous period;

when the signal-to-noise ratio of the first cell station does not belong to the nonlinear area, judging whether the first absolute difference value is smaller than a first preset threshold value, wherein the first preset threshold value is larger than the preset value;

if so, taking a first preset power value as the adjustment power value;

and if not, taking a second preset power value as the adjusting power value, wherein the first preset power value is smaller than the second preset power value.

In a possible implementation manner, the step of determining an adjustment power value according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio further includes:

calculating a second absolute difference value of the signal-to-noise ratio of the first small station and the reference signal-to-noise ratio;

if the first small station signal-to-noise ratio is the first small station signal-to-noise ratio acquired by the opposite end small station device in the first period, the reference signal-to-noise ratio is obtained by multiplying the first small station signal-to-noise ratio by a coefficient smaller than 1; if the first small station signal-to-noise ratio is not the first small station signal-to-noise ratio acquired by the opposite end small station device in the first period, the reference signal-to-noise ratio is the small station signal-to-noise ratio acquired by the opposite end small station device in the previous period;

when the second absolute difference value is smaller than a second preset threshold value, determining that the signal-to-noise ratio of the first small station belongs to the nonlinear region;

when the second absolute difference value is larger than or equal to the second preset threshold value, determining that the signal-to-noise ratio of the first small station does not belong to the nonlinear region.

In a possible implementation manner, the step of adjusting the transmission power of the transmission channel of the first small station device according to the adjustment power value, the first small station signal-to-noise ratio, and the first target signal-to-noise ratio includes:

if the signal-to-noise ratio of the first small station is greater than the first target signal-to-noise ratio, reducing the adjustment power value on the basis of the transmission power of the transmission channel, and transmitting data with the adjusted transmission power;

and if the signal-to-noise ratio of the first small station is smaller than the first target signal-to-noise ratio, increasing the adjustment power value on the basis of the transmission power, and transmitting data with the adjusted transmission power.

In a second aspect, an embodiment of the present invention further provides a power adjustment method, which is applied to a first small station device, where the first small station device communicates with a master station device, and the master station device prestores an acquisition channel planning table, where the channel planning table includes channel information of each small station device communicating with the master station device; the method comprises the following steps:

receiving the channel planning table, a first target signal-to-noise ratio and a first power adjustment instruction sent by the master station device;

the first target signal-to-noise ratio is the signal-to-noise ratio of a self sending channel acquired by the master station equipment; the channel planning table is used for indicating the first small station equipment and opposite small station equipment to establish communication; the first small station equipment and the opposite-end small station equipment have carrier superposition and are determined by the master station equipment according to the channel planning table;

acquiring the signal-to-noise ratio of a transmission channel of the opposite terminal small station equipment according to the first power adjustment instruction, and transmitting the signal-to-noise ratio to the opposite terminal small station equipment;

receiving a first small station signal-to-noise ratio sent by the opposite-end small station device, wherein the first small station signal-to-noise ratio is the signal-to-noise ratio of a sending channel of the first small station device and is periodically acquired by the opposite-end small station device according to the first power adjustment instruction;

and adjusting power according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio.

In a third aspect, an embodiment of the present invention further provides a power adjustment method, which is applied to a second small-station device, where the second small-station device communicates with a master station device, and the master station device prestores an acquisition channel planning table, where the channel planning table includes channel information of each small-station device communicating with the master station device; the method comprises the following steps:

receiving the channel planning table and a second power adjustment instruction sent by the master station device;

the channel planning table is used for establishing communication between the second small station equipment and opposite small station equipment; the second small station equipment and the opposite small station equipment do not have carrier superposition and are determined by the master station equipment according to the channel planning table;

acquiring the signal-to-noise ratio of a transmission channel of the opposite terminal small station device periodically according to the second power adjustment instruction, and transmitting the signal-to-noise ratio to the master station device;

receiving a second target signal-to-noise ratio and a second small station signal-to-noise ratio which are sent by the master station device, wherein the second small station signal-to-noise ratio is the signal-to-noise ratio of a sending channel of the second small station device and is periodically acquired by the opposite end small station device according to the second power adjustment instruction; the second target signal-to-noise ratio is calculated by the master station device according to the second small station signal-to-noise ratio;

and adjusting power according to the second target signal-to-noise ratio and the second small station signal-to-noise ratio.

In a fourth aspect, an embodiment of the present invention further provides a power adjustment apparatus, which is applied to a master station device, where a channel planning table is stored in advance in the master station device, and the channel planning table includes channel information of each small station device communicating with the master station device; the power adjustment apparatus includes:

a determining module, configured to determine, according to the channel plan table, each first small station device group with carrier superposition, where the small station device group includes two first small station devices;

the acquisition module is used for acquiring a first target signal-to-noise ratio of a self sending channel;

a sending module, configured to send, for each first small station device group, the channel planning table, the first target snr, and a first power adjustment instruction to each first small station device in the first small station device group, so that the first small station device performs power adjustment according to the first target snr and the first small station snr;

In a fifth aspect, an embodiment of the present invention further provides a first power adjustment apparatus, which is applied to a first small station device, where the first small station device communicates with a master station device, and the master station device prestores an acquisition channel planning table, where the channel planning table includes channel information of each small station device communicating with the master station device; the first power adjusting device includes:

a first receiving module, configured to receive the channel planning table, a first target signal-to-noise ratio, and a first power adjustment instruction sent by the master station device;

the first acquisition module is used for acquiring the signal-to-noise ratio of a transmission channel of the opposite terminal small station equipment according to the first power adjustment instruction and transmitting the signal-to-noise ratio to the opposite terminal small station equipment;

a first receiving module, configured to receive a first small station signal-to-noise ratio sent by the opposite-end small station device, where the first small station signal-to-noise ratio is a signal-to-noise ratio of a sending channel of the first small station device, and is periodically acquired by the opposite-end small station device according to the first power adjustment instruction;

and the first power adjustment module is used for adjusting power according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio.

In a sixth aspect, an embodiment of the present invention further provides a second power adjustment apparatus, which is applied to a second small-station device, where the second small-station device communicates with a master station device, and the master station device prestores an acquisition channel planning table, where the channel planning table includes channel information of each small-station device communicating with the master station device; the second power adjusting device includes:

a second receiving module, configured to receive the channel plan and a second power adjustment instruction sent by the master device;

the second acquisition module is used for periodically acquiring the signal-to-noise ratio of a transmission channel of the opposite terminal small station equipment according to the second power adjustment instruction and transmitting the signal-to-noise ratio to the master station equipment;

a second receiving module, configured to receive a second target signal-to-noise ratio and the second small station signal-to-noise ratio that are sent by the master station device, where the second small station signal-to-noise ratio is a signal-to-noise ratio of a sending channel of the second small station device, and is periodically acquired by the opposite-end small station device according to the second power adjustment instruction; the second target signal-to-noise ratio is calculated by the master station device according to the second small station signal-to-noise ratio;

and the second power adjustment module is used for adjusting the power according to the second target signal-to-noise ratio and the second small station signal-to-noise ratio.

In a seventh aspect, an embodiment of the present invention further provides a master station device, configured to implement the power adjustment method as described above.

In an eighth aspect, an embodiment of the present invention further provides a small station device, configured to implement the power adjustment method as described above.

Compared with the prior art, the power adjustment method, the power adjustment device, the master station device and the small station device provided by the embodiment of the invention comprise the following steps: firstly, the master station equipment determines each first small station equipment group with carrier superposition according to a channel planning table; then, the master station equipment acquires a first target signal-to-noise ratio of a self sending channel, and sends a channel planning table, the first target signal-to-noise ratio and a first power adjustment instruction to each first small station equipment in each first small station equipment group; the first small station equipment establishes communication according to the channel planning table and the opposite end small station equipment, periodically acquires the signal-to-noise ratio of a transmission channel of the opposite end small station equipment according to the first power instruction, and transmits the signal-to-noise ratio to the opposite end small station equipment; and the first small station equipment receives the small station signal-to-noise ratio periodically sent by the opposite end small station equipment, and performs power adjustment according to the small station signal-to-noise ratio and the target signal-to-noise ratio.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an application scenario of a power adjustment method according to an embodiment of the present invention.

Fig. 2 is a second schematic view of an application scenario of the power adjustment method according to the embodiment of the present invention.

Fig. 3 is a third schematic view of an application scenario of the power adjustment method according to the embodiment of the present invention.

Fig. 4 is a flowchart illustrating a power adjustment method according to an embodiment of the present invention.

Fig. 5 is a second flowchart of a power adjustment method according to an embodiment of the invention.

Fig. 6 is a diagram illustrating a power adjustment method according to an embodiment of the invention.

Fig. 7 is a third schematic flow chart of a power adjustment method according to an embodiment of the present invention.

Fig. 8 is a fourth flowchart illustrating a power adjustment method according to an embodiment of the present invention.

Fig. 9 is a block diagram of a power adjustment apparatus according to an embodiment of the present invention.

Fig. 10 is a block diagram of a first power adjustment apparatus according to an embodiment of the present invention.

Fig. 11 is a block diagram illustrating a second power adjustment apparatus according to an embodiment of the present invention.

Icon: 10-a master station device; 20-a first small station device; 30-a second small station device; 200-a power adjustment device; 300-a first power adjustment device; 400-a second power adjustment device; 201-a determination module; 202-an acquisition module; 203-a sending module; 301-a first receiving module; 302-a first acquisition module; 303-a first power adjustment module; 401-a second receiving module; 402-a second acquisition module; 403-second power adjustment module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic view illustrating an application scenario of the power adjustment method according to the present embodiment. The method comprises the following steps: the system comprises main station side equipment and small station side equipment, wherein the main station side equipment comprises main station equipment, the small station side equipment comprises n small station equipment, and each small station equipment is communicated with the main station equipment.

The master station device is used for planning and managing communication of each small station device, and the small station devices are used for data transmission through satellites and can be routers and the like.

The master station device comprises a transmitting channel TX and a receiving channel RX, and each small station device comprises a transmitting channel TX1, a first receiving channel RX1 and a second receiving channel RX2, wherein the first receiving channel RX1 of the small station device is used for receiving signaling transmitted by the master station device, and the second receiving channel RX2 is used for receiving data transmitted by a peer small station device communicating with the small station device. The small station device can also transmit data to the receive channel RX of the master station device via the transmit channel TX 1.

When any two small-station devices need to establish communication, firstly, a technician plans channel information of the two small-station devices, so that channel information of a transmitting channel TX1 of the small-station device to establish communication is the same as that of a second receiving channel RX2 of an opposite-end small-station device, and configures the main station device to generate a channel information table, wherein the channel information includes frequency points, bandwidths, roll-off and modulation and coding modes of each transmitting channel TX1 and the second receiving channel RX 2. Then the master station device sends the channel information table to a first receiving channel RX1 of each small station device through a sending channel TX, and the small station device performs channel information planning according to the channel information table to establish communication with the opposite small station device.

The type of communication established between two small-station devices may be one of two communication types described below.

First, the carrier superposition type is that channel information of a transmission channel TX1 of the small station device is consistent with channel information of a second reception channel RX2 of the opposite-end small station device, channel information of a second reception channel RX2 of the small station device is consistent with channel information of a transmission channel TX1 of the opposite-end small station device, and frequency points of the transmission channel TX1 of the small station device are the same as frequency points of the second reception channel RX 2.

And secondly, the non-carrier superposition type is that the channel information of the transmission channel TX1 of the small station device is consistent with the channel information of the second receiving channel RX2 of the opposite small station device, the channel information of the second receiving channel RX2 of the small station device is consistent with the channel information of the transmission channel TX1 of the opposite small station device, and the frequency points of the transmission channel TX1 of the small station device and the second receiving channel RX2 of the small station device are different.

When two small station devices communicate in a carrier superposition mode, the small station devices transmit data to the opposite small station device through a transmission channel TX1, the transmitted data can carry physical layer information of the channel, and the opposite small station can filter redundant physical layer information according to the channel information of the opposite small station device to obtain communication data. Meanwhile, the master station device may monitor data sent by the small station device through the receiving channel RX, but the master station device cannot filter out physical layer information carried by the monitored data, so that communication data cannot be obtained.

When two small station devices communicate in a non-carrier superposition manner, the small station device transmits data to the opposite small station device through a transmission channel TX1, and the master station device can monitor through a reception channel RX and obtain communication data.

The power adjustment method provided in this embodiment is described below by taking an example of performing communication between the first small station device 20 and the opposite small station device in a carrier superposition manner. The first small station device 20 may be any one of the n small station devices in fig. 1, and the opposite small station device is a small station device communicating with the first small station device 20. For example, the first small station device 20 may be the small station device 1 in fig. 1, and the opposite small station device is the small station device 2. It is understood that the small station device 2 may also be used as the first small station device 20, and accordingly, the opposite-end small station device is the small station device 1.

Therefore, referring to fig. 2, fig. 2 is a schematic view illustrating another application scenario of the power adjustment method provided in the present embodiment. The power adjustment method may include the following steps S11-S17.

S11, the master device 10 collects the target snr of its own transmission channel.

In this embodiment, the master station device 10 needs to configure the channel information of its own transmit channel TX and receive channel RX in advance, so that the channel information of the transmit channel TX and the receive channel RX are consistent, and thus the receive channel RX can acquire the channel signal-to-noise ratio of the transmit channel TX and use the channel signal-to-noise ratio as a target signal-to-noise ratio.

The target signal-to-noise ratio can be adjusted and collected by the master station device 10 so that the communication quality of the transmission channel of the master station device 10 is in a relatively good state.

S12, the master station device 10 sends a channel planning table, a target snr, and a first power adjustment instruction to both the first small station device 20 and the peer small station device.

S13, the first small station device 20 and the opposite small station device both perform channel information configuration according to the channel planning table to establish communication.

In this embodiment, the channel planning table includes a channel information table and a resource allocation table, where the channel information table includes channel identifiers of each small-station device communicating with the master station device 10, frequency points, bandwidths, and roll-off corresponding to each channel identifier, and the resource allocation table includes small-station identifiers of each small-station device communicating with the master station device 10, channel identifiers of each small-station device, and modulation and coding modes corresponding to each channel identifier.

After the first small station device 20 and the opposite small station device complete channel information configuration, the communication establishment is successful.

S14, the first small station device 20 periodically acquires, according to the first power adjustment command, the signal-to-noise ratio of the TX1 of the transmission channel of the opposite small station device through the second reception channel RX 2.

S15, the first small station device 20 sends the snr of the TX1 of the opposite small station device to the opposite small station device, so that the opposite small station device performs power adjustment according to the snr of its TX1 and the target snr.

S16, the first small station device 20 receives the small station snr periodically transmitted by the opposite small station device, where the small station snr is the snr of the transmission channel TX1 of the first small station device 20 periodically acquired by the opposite small station device according to the first power command.

In this embodiment, it should be noted that steps S14-S15 and S16 may be executed sequentially or simultaneously, and are not limited herein.

S17, the first small station device 20 performs power adjustment according to the small station snr and the target snr.

In this embodiment, the first small station device 20 adjusts the transmission power of the transmission channel TX, so that the difference between the small station signal-to-noise ratio and the target signal-to-noise ratio is smaller than the preset value, thereby implementing self-uplink power adjustment of the first small station device 20.

Optionally, the power adjustment method provided in this embodiment is described below by taking an example that the second small station device 30 and the peer small station device communicate with each other in a non-carrier superposition manner. The second small station device 30 may be any one of the n small station devices in fig. 1 except for the first small station device 20 and an opposite small station device of the first small station device 20, where the opposite small station device is a small station device communicating with the second small station device 30. For example, the second small station device 30 may be the small station device 3, and the opposite small station device may be the small station device 4. It is understood that the small station device 4 may also be used as the first small station device 20, and accordingly, the opposite small station device is the small station device 3.

Referring to fig. 3, fig. 3 is a schematic view of another application scenario of the power adjustment method provided in the present embodiment. The power adjustment method may include the following steps S21-S27.

S21, the master device 10 sends a channel plan table and a second power adjustment instruction to the second small station device 30 and the peer small station device.

And S22, the second small station device 30 and the opposite small station device configure channel information according to the channel planning table to establish communication.

S23, the second small station device 30 periodically acquires the second small station snr of the TX1 of the opposite small station device according to the second power adjustment instruction.

S24, the second small station device 30 transmits the second small station signal-to-noise ratio to the master station device 10.

In this embodiment, since the communication type between the second small station device 30 and the peer small station device is non-carrier superposition, that is, frequency points of a transmission channel TX1 and a second reception channel RX2 of the second small station device 30 are different, the master station device 10 may listen to data transmitted by the second small station device 30 through the reception channel RX, that is, a second small station signal-to-noise ratio.

S25, the master station device 10 calculates a second target snr according to the second small station snr.

S26, the master device 10 sends the second small-station snr and the second target snr to the second small-station device 30.

S27, the second small station device 30 adjusts power according to the second small station snr and the second target snr.

It can be understood that, when the second small station device 30 periodically collects the second small station signal-to-noise ratio of the peer small station device, the peer small station device also periodically collects the second small station signal-to-noise ratio of the transmission channel TX1 of the second small station device 30 and transmits the second small station signal-to-noise ratio to the master station device 10. The master station device 10 calculates a second target snr of the second small station device 30 according to the second small station snr, and sends the second small station snr and the second target snr to the second small station device 30. The second small station device 30 performs power adjustment according to the second small station signal-to-noise ratio and the second target signal-to-noise ratio.

On the basis of the above content, please refer to fig. 4, and fig. 4 shows a schematic flow chart of a power adjustment method provided in this embodiment, where the power adjustment method is applied to the master station device 10, the master station device 10 stores a channel planning table in advance, and the channel planning table includes channel information of each small station device communicating with the master station device 10. The method comprises the following steps S110-S130.

And S110, determining each first small station equipment group with carrier superposition according to the channel planning table, wherein the first small station equipment group comprises two first small station equipments.

In this embodiment, the channel information of two first small station devices 20 in the first small station device group is consistent, and the frequency point of the transmission channel and the frequency point of the second reception channel of each first small station device 20 are the same.

And S120, acquiring a first target signal-to-noise ratio of a self sending channel.

S130, aiming at each first small station equipment group, sending a channel planning table, a first target signal-to-noise ratio and a first power adjustment instruction to each first small station equipment in the first small station equipment group, so that the first small station equipment adjusts power according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio.

In this embodiment, the channel planning table is used for establishing communication between the first small station device 20 in the first small station device group and the opposite small station device; the first small station signal-to-noise ratio is a signal-to-noise ratio of a transmission channel of the first small station device 20, and is periodically acquired by the opposite-end small station device according to the first power adjustment instruction.

On the basis of fig. 4, please refer to fig. 5, the power adjustment method may further include steps S140-S160, which are described below in parallel with steps S110-S130.

And S140, acquiring each second small station equipment group without carrier superposition, wherein the second small station equipment group comprises two second small station equipments.

In this embodiment, the channel information of the two second small station devices 30 is the same, and the frequency points of the transmission channel TX and the second reception channel RX2 of each second small station device 30 are different.

And S150, aiming at each second small station equipment group, sending a channel planning table and a second power adjustment instruction to each second small station equipment in the second small station equipment group.

The channel planning table is used for two second small station devices 30 in the second small station device group to establish communication, and the second power adjustment instruction is used for instructing the second small station devices 30 to periodically acquire the signal-to-noise ratio of the transmission channel of the opposite-end small station device and return the signal-to-noise ratio to the master station device 10.

And S160, aiming at each second small station device in the second small station device group, calculating a second target signal-to-noise ratio according to the second small station signal-to-noise ratio of the second small station device, and sending the second target signal-to-noise ratio and the second small station signal-to-noise ratio to the second small station device so that the second small station device can carry out power adjustment according to the second target signal-to-noise ratio and the second small station signal-to-noise ratio.

The second small station signal-to-noise ratio is the signal-to-noise ratio of the transmission channel of the second small station device 30, and is periodically acquired by the opposite small station device according to the second power adjustment instruction.

In this embodiment, the master station device 10 may calculate the second target snr according to the second small-station snr of the second small-station device 30 as follows:

the method comprises the following steps of firstly, calculating the difference value between the current second substation signal-to-noise ratio rcst _ cur _ tx _ snr acquired in the current period and the last second substation signal-to-noise ratio rcst _ last _ tx _ snr acquired in the last period.

And secondly, if the difference is smaller than 1db, adding 1 to the stable ratio count stable _ cnt of the small station to obtain an updated stable ratio count stable _ cn of the small station, and using (rcst _ last _ tx _ snr + rcst _ cur _ tx _ snr)/2 as an updated signal-to-noise ratio rcst _ last _ tx _ snr of the second small station.

The snr stable count stable _ cnt and the last stable snr rcst _ last _ stable _ tx _ snr of the second small station device 30 are obtained.

If stable _ cnt%10= =0 and abs (rcst _ last _ stable _ tx _ snr-rcst _ last _ tx _ snr) > 1db, the last second cell snr rcst _ last _ tx _ snr is used as the last updated stable snr rcst _ last _ stable _ tx _ snr.

And thirdly, if the difference value is larger than or equal to 1db, taking the current second small station signal-to-noise ratio rcst _ current _ tx _ snr as the updated last second small station signal-to-noise ratio rcst _ last _ tx _ snr, and setting the signal-to-noise ratio stable count stable _ cnt of the second small station equipment to be 0.

And step four, acquiring the current sending signal-to-noise ratio main _ tx _ snr of the master station device 10.

And fifthly, judging whether the last stable signal-to-noise ratio rcst _ last _ stable _ tx _ snr meets any one of the following conditions:

1. there is no rcst _ last _ stable _ tx _ snr.

2、rcst_last_stable_tx_snr < main_tx_snr - 7db

3、rcst_last_stable_tx_snr > main_tx_snr

If yes, taking the current sending signal-to-noise ratio main _ tx _ snr as a second target signal-to-noise ratio rcst _ target _ snr of the second small station equipment 30;

if not, the (main _ tx _ snr + rcst _ last _ stable _ tx _ snr)/2 is used as the second target snr rcst _ target _ snr of the second substation device 30.

When the master station device 10 is started and the current sending signal-to-noise ratio main _ tx _ snr of the master station device 10 or the last stable signal-to-noise ratio rcst _ last _ stable _ tx _ snr of the second cell station device 30 changes, the fifth step is executed in a return mode.

Optionally, the channel information of two first small station devices 20 in the first small station device group is consistent, and the frequency points of the sending channel and the receiving channel of each first small station device 20 are consistent.

Optionally, the step of the first small station device 20 performing uplink power adjustment according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio in step S130 may include the following substeps S1301-S1302.

S1301, calculating a first absolute difference value between the signal-to-noise ratio of the first small station and a first target signal-to-noise ratio according to the signal-to-noise ratio of the first small station sent by the opposite-end small station device in the current period.

S1302, if the first absolute difference is greater than or equal to a preset value, determining an adjustment power value according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio.

And S1303, adjusting the transmission power of the transmission channel of the first small station device according to the adjustment power value, the first small station signal-to-noise ratio and the first target signal-to-noise ratio.

In the present embodiment, the first small station signal-to-noise ratio may be denoted by S1, the first target signal-to-noise ratio may be denoted by OS1, the first absolute difference value may be denoted by D1, and the adjustment power value may be denoted by P. The preset value is set by the skilled person based on experience, for example, the preset value may be 0.5 db.

First, D1= abs is calculated (S1-OS 1), where abs is an absolute value operation.

Then, if D1 is greater than or equal to 0.5db, the adjustment power value is determined according to S1 and OS 1.

Finally, the transmission power of the transmission channel of the first cell device is adjusted according to P, S1 and OS 1.

Optionally, the sub-step S1302 may include the following detailed steps S10-S40.

And S10, when the signal-to-noise ratio of the first small station belongs to the non-linear region, taking the back-off power value as the adjusting power value.

In this embodiment, if the signal-to-noise ratio of the first small station is the signal-to-noise ratio of the first small station acquired by the opposite small station device in the first period, the backoff power value is a preset power value; the preset power value may be set to 3 db. And if the signal-to-noise ratio of the first small station is not the signal-to-noise ratio of the first small station acquired by the opposite small station equipment in the first period, the backoff power value is the corresponding adjustment power value of the previous period.

When the signal-to-noise ratio of the transmission channel TX of the small station apparatus belongs to the non-linear region, the signal-to-noise ratio of the transmission channel TX does not change significantly even if the transmission power of the transmission channel TX of the small station apparatus is increased.

S20, when the signal-to-noise ratio of the first small station does not belong to the nonlinear area, judging whether the first absolute difference value is smaller than a first preset threshold value, wherein the first preset threshold value is larger than a preset value.

In the present embodiment, the first preset threshold is set by a technician according to experience, for example, the first preset threshold may be 5 db.

S30, if the first absolute difference is smaller than the first preset threshold, the first preset power value is used as the adjustment power value.

S40, if the first absolute difference is greater than or equal to the first preset threshold, the second preset power value is used as the adjustment power value, where the first preset power value is smaller than the second preset power value.

In this embodiment, the first preset power value and the second preset power value are set by a technician according to experience, for example, the first preset power value may be 0.5db, and the second preset power value may be 3 db.

If D1<5db, P =0.5 db. If D1 is greater than or equal to 5db, P =3 db.

Optionally, before the steps S10-S40, the sub-step S1302 may further include the following detailed steps S1-S3.

And S1, calculating a second absolute difference value of the signal-to-noise ratio sum of the first small station.

If the signal-to-noise ratio of the first small station is the signal-to-noise ratio of the first small station acquired by the opposite-end small station device in the first period, the reference signal-to-noise ratio is obtained by multiplying the signal-to-noise ratio of the first small station by a coefficient smaller than 1, for example, the coefficient may be 0.8; and if the signal-to-noise ratio of the first small station is not the signal-to-noise ratio of the first small station acquired by the opposite-end small station device in the first period, the reference signal-to-noise ratio is the signal-to-noise ratio of the small station acquired by the opposite-end small station device in the previous period.

And S2, when the second absolute difference is smaller than a second preset threshold, determining that the signal-to-noise ratio of the first small station belongs to the nonlinear area.

And S3, when the second absolute difference is greater than or equal to a second preset threshold, determining that the signal-to-noise ratio of the first small station does not belong to the nonlinear area.

In this embodiment, the reference signal-to-noise ratio may be represented by S0, the second absolute difference may be represented by D2, and the second preset threshold may be set by a technician according to experience, for example, the second preset threshold may be 0.2 db.

First, D2= abs is calculated (S1-S0), and when D2<0.2db, it is determined that S1 belongs to the nonlinear region; when D2 ≧ 0.2db, it is determined that S1 does not belong to the nonlinear region.

Optionally, the sub-step S1303 may include the following detailed steps.

And if the signal-to-noise ratio of the first small station is greater than the first target signal-to-noise ratio, reducing the adjustment power value on the basis of the transmission power of the transmission channel, and transmitting data by using the adjusted transmission power.

And if the signal-to-noise ratio of the first small station is smaller than the first target signal-to-noise ratio, increasing the adjustment power value on the basis of the transmission power, and transmitting data by using the adjusted transmission power.

In the present embodiment, the transmission power of the transmission channel refers to the current transmission power of the transmission channel TX of the first small station device 20.

For ease of understanding, reference is now made to fig. 6, where the above-described process is described on the basis of fig. 6. The step of the first small station device performing uplink power adjustment according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio in step S130 may include the following substeps S301-S301.

And S301, calculating D1= abs (S1-OS 1) according to S1 sent by the opposite-end small station device in the current period.

S302, if D1 is not less than 0.5db, D2= abs is calculated (S1-S0).

S303, judging whether D2 is less than 0.2 db.

And S304, if the D2 is less than 0.2db, the back-off power value is used as a power adjustment value.

S305, if the D2 is more than or equal to 0.2db, judging whether the D1 is less than 5 db.

And S306, if the D1 is less than 5db, determining that the power adjustment value is 0.5 db.

S307, if the D1 is larger than or equal to 5db, the power adjustment value is determined to be 3 db.

S308, if S1> OS1, the adjustment power value is reduced based on the transmission power of the transmission channel, and the data is transmitted with the adjusted transmission power.

S309, if S1< OS1, the adjustment power value is increased in addition to the transmission power, and data is transmitted at the adjusted transmission power.

Compared with the prior art, the embodiment has the following beneficial effects:

first, the power adjustment method provided in this embodiment can determine, according to channel information of planned cell equipment, cell equipment with carrier superposition, and send a signal-to-noise ratio of a transmission channel of the cell equipment to the cell equipment as a target signal-to-noise ratio, so that after the cell equipment establishes communication with an opposite-end cell equipment, power adjustment is performed according to the cell signal-to-noise ratio of the transmission channel of the cell equipment, which is acquired by the opposite-end cell equipment, and a first target signal-to-noise ratio.

Secondly, for the small station equipment group without carrier superposition during channel planning, after the small station equipment and the opposite terminal small station equipment establish communication, the main station equipment periodically acquires the signal-to-noise ratio of the transmission channel of the small station equipment, calculates the target signal-to-noise ratio according to the signal-to-noise ratio of the transmission channel, and then transmits the signal-to-noise ratio of the transmission channel and the target signal-to-noise ratio to the small station equipment so as to adjust the power of the small station equipment.

Referring to fig. 7, this embodiment further provides a power adjustment method, which is applied to a first small-station device 20, where the first small-station device 20 communicates with a master station device 10, and the master station device 10 prestores an obtained channel planning table, where the channel planning table includes channel information of each small-station device communicating with the master station device; the power adjustment method includes the following steps S210 to S240.

S210, receiving a channel planning table, a first target signal-to-noise ratio and a first power adjustment instruction sent by the master station device.

Wherein, the first target signal-to-noise ratio is the signal-to-noise ratio of the own transmission channel acquired by the master station device 10; the channel planning table is used for indicating the first small station device 20 and the opposite small station device to establish communication; the first small station device 20 and the opposite small station device have carrier superposition, and are determined by the master station device 10 according to the channel planning table.

And S220, acquiring the signal-to-noise ratio of a transmission channel of the opposite terminal small station device according to the first power adjustment instruction, and transmitting the signal-to-noise ratio to the opposite terminal small station device.

And S230, receiving the signal-to-noise ratio of the first small station sent by the opposite-end small station equipment, wherein the signal-to-noise ratio of the first small station is the signal-to-noise ratio of a sending channel of the first small station equipment, and the signal-to-noise ratio is periodically acquired by the opposite-end small station equipment according to the first power adjustment instruction.

And S240, adjusting power according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio.

It should be noted that step S220 and step S230 may be executed sequentially or simultaneously, which is not limited herein.

Referring to fig. 8, the present embodiment further provides a power adjustment method, which is applied to a second small-station device, where the second small-station device communicates with a master station device, and the master station device prestores an acquisition channel planning table, where the channel planning table includes channel information of each small-station device communicating with the master station device. The power adjustment method includes the following steps S310 to S340.

And S310, receiving a channel planning table and a second power adjustment instruction sent by the master station device.

The channel planning table is used for establishing communication between the second small station device 30 and the opposite small station device; the second small station device 30 and the opposite small station device do not have carrier superposition, and are determined by the master station device 10 according to the channel planning table.

And S320, periodically acquiring the signal-to-noise ratio of the transmission channel of the opposite terminal small station device according to the second power adjustment instruction, and transmitting the signal-to-noise ratio to the main station device.

S330, receiving a second target signal-to-noise ratio and a second small station signal-to-noise ratio which are sent by the master station device, wherein the second small station signal-to-noise ratio is the signal-to-noise ratio of a sending channel of the second small station device and is periodically acquired by the opposite end small station device according to a second power adjustment instruction; the second target signal-to-noise ratio is calculated by the master station device according to the second small station signal-to-noise ratio.

And S340, adjusting power according to the second target signal-to-noise ratio and the second small station signal-to-noise ratio.

It should be noted that, step S320 and step S330 may be executed in sequence, or may be executed simultaneously, which is not limited herein.

Referring to fig. 9, the present embodiment further provides a power adjustment apparatus 200, which is applied to a master station device, where the master station device stores a channel planning table in advance, and the channel planning table includes channel information of each small station device communicating with the master station device; the power adjustment apparatus 200 includes:

a determining module 201, configured to determine, according to the channel planning table, each first small station device group with carrier superposition, where the small station device group includes two first small station devices.

The acquisition module 202 is configured to acquire a first target signal-to-noise ratio of a transmission channel of the acquisition module.

A sending module 203, configured to send, for each first small station device group, a channel planning table, a first target signal-to-noise ratio, and a first power adjustment instruction to each first small station device in the first small station device group, so that the first small station device performs power adjustment according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio.

The channel planning table is used for establishing communication between two first small station devices in the first small station device group; the signal-to-noise ratio of the first small station is the signal-to-noise ratio of a transmission channel of the first small station equipment, and is periodically acquired by the opposite small station equipment according to the first power adjustment instruction.

Referring to fig. 10, an embodiment of the present invention further provides a first power adjustment apparatus 300, which is applied to a first small-station device, where the first small-station device communicates with a master station device, and the master station device pre-stores an acquisition channel planning table, where the channel planning table includes channel information of each small-station device communicating with the master station device; the first power adjusting apparatus 300 includes:

the first receiving module 301 is configured to receive a channel planning table, a first target signal-to-noise ratio, and a first power adjustment instruction sent by the master station device.

The first target signal-to-noise ratio is the signal-to-noise ratio of a self sending channel acquired by the master station equipment; the channel planning table is used for indicating the first small station equipment and the opposite small station equipment to establish communication; the first small station equipment and the opposite end small station equipment are superposed by carriers, and the carriers are determined by the master station equipment according to the channel planning table.

A first acquiring module 302, configured to acquire a signal-to-noise ratio of a transmission channel of the peer station device according to the first power adjustment instruction, and send the signal-to-noise ratio to the peer station device.

The first receiving module 301 is further configured to receive a first small station signal-to-noise ratio sent by the opposite-end small station device, where the first small station signal-to-noise ratio is a signal-to-noise ratio of a sending channel of the first small station device, and is periodically acquired by the opposite-end small station device according to the first power adjustment instruction.

And the first power adjustment module 303 is configured to perform power adjustment according to the first target signal-to-noise ratio and the first small station signal-to-noise ratio.

Referring to fig. 11, an embodiment of the present invention further provides a second power adjustment apparatus 400, which is applied to a second small-station device, where the second small-station device communicates with a master station device, and the master station device pre-stores an acquisition channel planning table, where the channel planning table includes channel information of each small-station device communicating with the master station device; the second power adjusting apparatus 400 includes:

a second receiving module 401, configured to receive the channel planning table and the second power adjustment instruction sent by the master device.

The channel planning table is used for establishing communication between the second small station equipment and the opposite small station equipment; the second small station equipment and the opposite small station equipment do not have carrier superposition and are determined by the master station equipment according to the channel planning table.

A second acquiring module 402, configured to periodically acquire, according to the second power adjustment instruction, a signal-to-noise ratio of a transmission channel of the peer small station device, and send the signal-to-noise ratio to the master station device.

The second receiving module 401 is further configured to receive a second target signal-to-noise ratio and a second small-station signal-to-noise ratio, which are sent by the master station device, where the second small-station signal-to-noise ratio is a signal-to-noise ratio of a sending channel of the second small-station device, and is periodically acquired by the opposite-end small-station device according to the second power adjustment instruction; the second target signal-to-noise ratio is calculated by the master station device according to the second small station signal-to-noise ratio.

And a second power adjustment module 403, configured to perform power adjustment according to the second target signal-to-noise ratio and the second cell signal-to-noise ratio.

An embodiment of the present invention further provides a master station device, configured to implement steps S110 to S130 in the power adjustment method as described above.

The embodiment of the present invention further provides a small station device, configured to implement steps S210 to S240 in the power adjustment method as described above, or implement steps S310 to S340 in the power adjustment method as described above.

In summary, embodiments of the present invention provide a power adjustment method and apparatus, a master station device, and a small station device, where the method includes: firstly, the master station equipment determines each first small station equipment group with carrier superposition according to a channel planning table; then, the master station equipment acquires a first target signal-to-noise ratio of a self sending channel, and sends a channel planning table, the first target signal-to-noise ratio and a first power adjustment instruction to each first small station equipment in each first small station equipment group; the first small station equipment establishes communication according to the channel planning table and the opposite end small station equipment, periodically acquires the signal-to-noise ratio of a transmission channel of the opposite end small station equipment according to the first power instruction, and transmits the signal-to-noise ratio to the opposite end small station equipment; and the first small station equipment receives the small station signal-to-noise ratio periodically sent by the opposite end small station equipment, and performs power adjustment according to the small station signal-to-noise ratio and the target signal-to-noise ratio.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The power adjustment method is characterized by being applied to a master station device, wherein a channel planning table is prestored in the master station device, and the channel planning table comprises channel information of each small station device which is communicated with the master station device; the method comprises the following steps:

determining each first small station equipment group with carrier superposition according to the channel planning table, wherein the first small station equipment group comprises two first small station equipments;

acquiring a first target signal-to-noise ratio of a self sending channel;

the channel planning table is used for establishing communication between two first small station devices in the first small station device group; and the first small station signal-to-noise ratio is the signal-to-noise ratio of a sending channel of the first small station equipment, and is periodically acquired by the opposite end small station equipment according to the first power adjustment instruction.

2. The method of claim 1, further comprising:

and for each second small station device in the second small station device group, calculating a second target signal-to-noise ratio according to a second small station signal-to-noise ratio of the second small station device, and sending the second target signal-to-noise ratio and the second small station signal-to-noise ratio to the second small station device so that the second small station device performs power adjustment according to the second target signal-to-noise ratio and the second small station signal-to-noise ratio, wherein the second small station signal-to-noise ratio is the signal-to-noise ratio of a sending channel of the second small station device, and is periodically acquired by the opposite end small station device according to the second power adjustment instruction.

3. The method according to claim 1, wherein the channel information of two first small station devices in the first small station device group is identical, and the frequency points of the transmission channel and the reception channel of each first small station device are identical.

4. The method of claim 1, wherein the step of the first small station device performing uplink power adjustment according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio comprises:

if the first absolute difference value is larger than or equal to a preset value, determining an adjustment power value according to the first small station signal-to-noise ratio and the first target signal-to-noise ratio;

and adjusting the sending power of the sending channel of the first small station equipment according to the adjusting power value, the first small station signal-to-noise ratio and the first target signal-to-noise ratio.

5. The method of claim 4, wherein the step of determining an adjustment power value based on the first small station signal-to-noise ratio and the first target signal-to-noise ratio comprises:

if the first small station signal-to-noise ratio is the first small station signal-to-noise ratio acquired by the opposite end small station device in the first period, the backoff power value is a preset power value; if the first small station signal-to-noise ratio is not the first small station signal-to-noise ratio acquired by the opposite end small station device in the first period, the backoff power value is the corresponding adjustment power value of the previous period;

when the signal-to-noise ratio of the first small station does not belong to the nonlinear area, judging whether the first absolute difference value is smaller than a first preset threshold value or not, wherein the first preset threshold value is larger than the preset value;

if so, taking a first preset power value as the adjustment power value;

6. The method of claim 5, wherein the step of determining an adjustment power value based on the first cell signal-to-noise ratio and the first target signal-to-noise ratio further comprises:

7. The method of claim 4, wherein the step of adjusting the transmission power of the transmission channel of the first small station device according to the adjustment power value, the first small station signal-to-noise ratio and the first target signal-to-noise ratio comprises:

8. A power adjustment method is characterized in that the power adjustment method is applied to first small station equipment, the first small station equipment is communicated with main station equipment, the main station equipment is stored with a channel planning table in advance, and the channel planning table comprises channel information of each small station equipment communicated with the main station equipment; the method comprises the following steps:

the first target signal-to-noise ratio is the signal-to-noise ratio of a self sending channel acquired by the master station equipment; the channel planning table is used for indicating the first small station equipment and opposite small station equipment to establish communication; the first small station equipment and the opposite end small station equipment are superposed by carriers, and the carriers are determined by the master station equipment according to the channel planning table;

9. A power adjustment method is characterized in that the power adjustment method is applied to second small station equipment, the second small station equipment is communicated with main station equipment, the main station equipment is stored with a channel planning table in advance, and the channel planning table comprises channel information of each small station equipment communicated with the main station equipment; the method comprises the following steps:

10. A power adjusting device is characterized by being applied to a master station device, wherein a channel planning table is prestored in the master station device, and the channel planning table comprises channel information of each small station device which is communicated with the master station device; the power adjustment device includes:

a determining module, configured to determine, according to the channel plan table, each first small station device group with carrier superposition, where the first small station device group includes two first small station devices;

11. A first power adjusting device is applied to a first small station device, the first small station device communicates with a master station device, the master station device pre-stores a channel planning table, and the channel planning table includes channel information of each small station device communicating with the master station device; the first power adjusting device includes:

the first receiving module is further configured to receive a first small station signal-to-noise ratio sent by the opposite-end small station device, where the first small station signal-to-noise ratio is a signal-to-noise ratio of a sending channel of the first small station device, and is periodically acquired by the opposite-end small station device according to the first power adjustment instruction;

12. A second power adjustment device, which is applied to a second small station device, where the second small station device communicates with a master station device, and the master station device prestores a channel planning table, where the channel planning table includes channel information of each small station device communicating with the master station device; the second power adjusting device includes:

a second receiving module, configured to receive the channel planning table and a second power adjustment instruction sent by the master device;

the second receiving module is further configured to receive a second target signal-to-noise ratio and a second small station signal-to-noise ratio, where the second small station signal-to-noise ratio is a signal-to-noise ratio of a transmission channel of the second small station device and is periodically acquired by the opposite-end small station device according to the second power adjustment instruction; the second target signal-to-noise ratio is calculated by the master station device according to the second small station signal-to-noise ratio;

13. A primary station device, characterized by being arranged to implement the power adjustment method of any one of claims 1-7.

14. A small station device, characterized by being configured to implement the power adjustment method of claim 8 or to implement the power adjustment method of claim 9.