WO2019153223A1 - 一种无线mesh网络功率调整方法、装置及设备 - Google Patents

一种无线mesh网络功率调整方法、装置及设备 Download PDF

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Publication number
WO2019153223A1
WO2019153223A1 PCT/CN2018/075932 CN2018075932W WO2019153223A1 WO 2019153223 A1 WO2019153223 A1 WO 2019153223A1 CN 2018075932 W CN2018075932 W CN 2018075932W WO 2019153223 A1 WO2019153223 A1 WO 2019153223A1
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value
target
channel quality
preset
power
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PCT/CN2018/075932
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English (en)
French (fr)
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郜旭凯
安林峰
管鲍
马树锋
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海能达通信股份有限公司
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Priority to PCT/CN2018/075932 priority Critical patent/WO2019153223A1/zh
Publication of WO2019153223A1 publication Critical patent/WO2019153223A1/zh

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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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/46—TPC being performed in particular situations in multi hop networks, e.g. wireless relay networks

Definitions

  • the present invention relates to the field of wireless MESH networks, and in particular, to a method, device and device for adjusting power of a wireless MESH network.
  • a wireless mesh network is a multi-hop network composed of wireless routers. It mainly consists of wireless routing nodes, access points and user nodes. Due to its ease of deployment and low cost, the wireless Mesh network was originally developed for use in scenarios such as war and natural disasters that require rapid deployment of communication networks, and is also used to solve the "last mile" network problem.
  • the transmission power is often unadjustable, so that when a small power is required for signal transmission, a lot of useless power is generated, which not only increases the power consumption, but also Excessive power can also interfere with signal transmission between multiple devices.
  • an embodiment of the present invention provides a device and a device for adjusting a power of a wireless MESH network, which realizes that when transmitting data through a wireless MESH network, the transmission power is minimized while satisfying the current throughput requirement. It reduces the interference of the transmit power to other nodes, saving power and extending the working time.
  • the sending node sends a preset reference signal to the receiving node;
  • the sending node calculates a power adjustment value according to the channel quality measurement value and a preset power control target value
  • the channel quality measurement value includes:
  • Reference signal received power single stream channel quality indicator value, dual stream channel quality indicator value, and channel matrix rank.
  • the sending node calculates the power adjustment value according to the channel quality measurement value and the preset power control target value, including:
  • the target power control value includes: a first target channel quality indicator value, and a target signal interference noise ratio;
  • a second target channel quality indicator value Determining, according to the channel matrix, a second target channel quality indicator value, where the second target channel indicator value is a single stream channel quality indicator value or a dual stream channel quality indicator value;
  • the power adjustment value is 0;
  • the second target channel quality indicator value is greater than the first target channel quality indicator value, calculating according to a difference between the average signal interference noise ratio and a maximum value of the target signal interference noise ratio and a preset first threshold value Power adjustment value;
  • the second target channel quality indicator value is smaller than the first channel quality indicator value, according to a difference between the average signal interference noise ratio and a minimum value of the target signal interference noise ratio and a preset second threshold Relationship, calculate the power adjustment value.
  • it also includes:
  • the method further includes:
  • the receiving node calculates a target automatic gain control value according to the reference signal
  • the target automatic gain control value is valid for the next time slot.
  • the sending node sends a preset reference signal to the receiving node;
  • a first calculating unit configured to receive, by the receiving node, a channel quality measurement value of the receiving node according to the received reference signal and a preset reference signal;
  • a feedback unit configured to feed back the channel quality measurement value to the sending node within a preset time
  • a second calculating unit configured to calculate, by the sending node, a power adjustment value according to the channel quality measurement value and a preset power control target value
  • an adjusting unit configured to adjust a current transmit power of the sending node according to the power adjustment value.
  • it also includes:
  • a configuration unit configured to configure a target throughput of the system during initialization
  • a determining unit configured to determine, according to the target throughput, a power control target value of the sending node in a preset relationship table.
  • it also includes:
  • a third calculating unit configured to receive, by the receiving node, a target automatic gain control value according to the reference signal
  • the memory is connected to the processor for storing a program and data generated during a running of the program
  • the processor is configured to implement the following functions by running a program stored in the memory:
  • the sending node sends a preset reference signal to the receiving node; the receiving node calculates a channel quality measurement value of the receiving node according to the received reference signal and the preset reference signal; The receiving node feeds back the channel quality measurement value to the sending node, and the sending node calculates a power adjustment value according to the channel quality measurement value and a preset power control target value; The adjustment value adjusts the current transmit power of the sending node.
  • the processor is further configured to:
  • the processor is further configured to:
  • the receiving node calculates a target automatic gain control value according to the reference signal
  • the target automatic gain control value is valid for the next time slot.
  • a method for adjusting a power of a wireless MESH network determines a power control target value by using a throughput.
  • the sending node sends a preset reference signal to the receiving node; the receiving node is received according to the received Calculating, by the reference signal and the preset reference signal, a channel quality measurement value of the receiving node; the receiving node feeds back the channel quality measurement value to the sending node in a preset time; the sending node is based on The channel quality measurement value and the preset power control target value are used to calculate a power adjustment value; and the current transmission power of the sending node is adjusted according to the power adjustment value.
  • the transmission power is minimized, thereby reducing the interference of the transmission power to other nodes, and saving the power to extend the working time. And at the same time of power adjustment, the adjustment of the AGC of the receiving node is realized.
  • FIG. 1 is a schematic flowchart diagram of a method for adjusting power of a wireless MESH network according to an embodiment of the present invention
  • FIG. 2 is a flow chart showing a method of calculating a power adjustment value
  • FIG. 3 is a schematic structural diagram showing a wireless MESH network power adjustment apparatus according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a wireless MESH network power adjustment apparatus according to an embodiment of the present invention.
  • Figure 5 shows a schematic diagram of transmit power and AGC joint adjustment power.
  • FIG. 1 a schematic flowchart of a method for adjusting a power of a wireless MESH network according to an embodiment of the present invention is shown.
  • the method includes:
  • the transmitting node sends a preset reference signal to the receiving node in the preset measurement subframe.
  • the preset measurement subframe is set at system initialization, where the measurement subframe can be understood as a fixed time slot of the system frame, and each time the fixed time slot is sent, the sending node needs to send to the receiving node. Reference signal.
  • the reference signal is preset, and both the transmitting node and the receiving node know what the reference signal is to be transmitted.
  • the power control target value includes: a first target CQI tar (English full name: Channel Quality Indicator, Chinese full name: channel quality indicator) And the target SINR (English full name: Signal Interference to Noise Rate, Chinese full name: signal interference noise ratio), specifically, also includes:
  • the target power is the most energy-saving power in the case of ensuring system throughput.
  • the CQI, SINR, and throughput have a one-to-one correspondence, in which the throughput corresponds to the CQI, and the CQI and the SINR value are in one-to-one correspondence.
  • the throughput can directly correspond to the SINR; where the SINR value is a range value.
  • the receiving node calculates a channel quality measurement value of the receiving node according to the received reference signal and a preset reference signal.
  • the preset reference signal is preset, but after the preset reference signal is sent from the sending node, the reference signal received by the receiving node may be different from the preset reference because the channel quality of the receiving node is different. signal.
  • the channel quality measurement value includes: reference signal received power (English name: Reference Signal Received Power, English abbreviation: RSRP), single stream channel quality indicator value CQI singleTB , dual stream channel quality indicator value CQI doubleTB and channel matrix rank (English full name :Rank Indicator, English abbreviation: RI).
  • S103 The receiving node feeds back the channel quality measurement value to the sending node within a preset time
  • the transmitting node is guaranteed to decode before the next measurement subframe arrives, and then the power is adjusted according to the feedback information
  • the receiving node needs to advance at least four subframes to the transmitting node before the next measurement subframe. Feedback channel quality measurements.
  • the sending node calculates a power adjustment value according to the channel quality measurement value and a preset power control target value.
  • the transmission mode adopted by the sending node may be a single stream or a dual stream, different transmission modes, corresponding to different CQI values, different CQI values corresponding to different SINRs, and adjustment for power. It is also necessary to ensure that the SINR is within the range of the target SINR.
  • S104 includes:
  • S201 Determine a second target channel quality indicator value according to the channel matrix, where the second target channel indicator value is a single stream channel quality indicator value or a dual stream channel quality indicator value;
  • S202 Calculate a compensation value of a signal interference noise ratio according to a difference between a current transmit power and a transmit power when the reference sequence is transmitted, and a signal interference noise ratio corresponding to the second target channel quality indicator value;
  • the power since the current transmit power is relative to the transmit reference sequence, the power may have been adjusted, that is, the current transmit power and the transmit power when the reference sequence is transmitted are different, and the signal interference noise ratio is compensated.
  • the value is relative to the current power.
  • the channel quality indicator value CQI and the signal to interference and noise ratio SINR are in one-to-one correspondence. Therefore, the signal interference can be determined according to the second target channel quality indicator value CQI choose sent by the receiving node.
  • the noise ratio is SINR.
  • the compensation value of the signal to interference and noise ratio can be calculated by the following formula 1):
  • the compensation value compensation -SINR A_B signal to interference noise ratio, SINR A_B CQL choose a second target signal to interference noise ratio corresponding
  • P t is the current transmit power
  • P tn transmit power when the reference signal is transmitted
  • a For the sending node, B is the receiving node.
  • S203 Perform smoothing processing on the interference signal to noise ratio of the compensation signal to obtain an average signal interference noise ratio
  • the average signal to interference and noise ratio can be calculated by the following formula 2):
  • SINR avg c * SINR avg + (1-c) * compensation - SINR A_B ;
  • the SINR avg is an average signal to interference and noise ratio obtained by performing time domain smoothing filtering on the compensated SINR, and c is a filter coefficient and a compensation-SINR A_B is a compensation signal interference noise ratio.
  • S204 Determine a relationship between the second target channel quality indicator value and a first target channel quality indicator value.
  • the power adjustment value can be calculated by the following formula 3):
  • the CQI choose is the second target channel quality indicator value
  • the CQI tar is the first target channel quality indicator value
  • the DeltaP is the power adjustment value
  • the SINR avg is the average signal interference noise ratio
  • the SINR tar_up is the target signal interference noise ratio maximum. value.
  • the power adjustment value should be less than zero, but in order to prevent the adjustment from being too large, the adjustment value needs to be limited to a certain range. It can be set to -6 dB in the embodiment. Therefore, the first threshold can be understood as 0 and -6 dB.
  • the power adjustment value can be calculated by the following formula 4.
  • DeltaP is the power adjustment value
  • SINR avg is the average signal to interference and noise ratio
  • SINR tar_up is the maximum value of the target signal interference noise ratio.
  • the power adjustment value should be greater than zero, but in order to prevent the adjustment from being too large, the adjustment value needs to be limited to a certain range. It can be set to 6 dB in the embodiment. Therefore, the second threshold can be understood as 0 and 6 dB.
  • the adjustment of the power should also be guaranteed to be less than the preset maximum value. Therefore, it also includes:
  • the adjusted power P adjust max ⁇ P t +DeltaP, P min ⁇ , that is, the adjusted power cannot be less than the minimum value of the preset power;
  • the adjusted power P adjust min ⁇ P t +DeltaP, P max ⁇ , that is, the adjusted amount of power cannot be greater than the preset power maximum.
  • the automatic gain control AGC of the receiving node needs to adapt to the power adjustment, and thus includes:
  • the receiving node calculates a target automatic gain control value according to the reference signal
  • the target automatic gain control value is valid for the next time slot.
  • FIG. 5 shows a schematic diagram of transmit power and AGC joint adjustment power.
  • the power control target value is determined by the throughput, and the reference signal is sent to the receiving node in the measurement subframe, and the channel quality of the receiving node is calculated according to the reference signal, and the power control target value and the channel quality of the receiving node are adopted.
  • the transmit power of the transmitting node is adjusted. Therefore, under the premise of meeting the current throughput requirements, the interference of the transmission power to other nodes is minimized, and the power is saved to extend the working time. In addition to this, the adjustment of the AGC of the receiving node is also realized while the power is being adjusted.
  • a wireless MESH network power adjustment apparatus including:
  • the sending node sends a preset reference signal to the receiving node;
  • the first calculating unit 302 is configured to calculate, by the receiving node, a channel quality measurement value of the receiving node according to the received reference signal and the preset reference signal;
  • the feedback unit 303 is configured to feed back, by the receiving node, the channel quality measurement value to the sending node, in a preset time;
  • the second calculating unit 304 is configured to calculate, by the sending node, a power adjustment value according to the channel quality measurement value and a preset power control target value;
  • the adjusting unit 305 is configured to adjust, according to the power adjustment value, a current transmit power of the sending node.
  • it also includes:
  • a configuration unit configured to configure a target throughput of the system during initialization
  • a determining unit configured to determine, according to the target throughput, a power control target value of the sending node in a preset relationship table.
  • it also includes:
  • a third calculating unit configured to receive, by the receiving node, a target automatic gain control value according to the reference signal
  • the second calculating unit is specifically configured to:
  • the target power control value includes: a first target channel quality indicator value, and a target signal interference noise ratio;
  • a second target channel quality indicator value Determining, according to the channel matrix, a second target channel quality indicator value, where the second target channel indicator value is a single stream channel quality indicator value or a dual stream channel quality indicator value;
  • the power adjustment value is 0;
  • the second target channel quality indicator value is greater than the first target channel quality indicator value, calculating according to a difference between the average signal interference noise ratio and a maximum value of the target signal interference noise ratio and a preset first threshold value Power adjustment value;
  • the second target channel quality indicator value is smaller than the first channel quality indicator value, according to a difference between the average signal interference noise ratio and a minimum value of the target signal interference noise ratio and a preset second threshold Relationship, calculate the power adjustment value.
  • the interference of the transmission power to other nodes is minimized, and the power saving is extended to extend the working time.
  • the adjustment of the AGC of the receiving node is also realized while the power is being adjusted.
  • FIG. 4 a structural diagram of a wireless MESH network power adjustment apparatus according to an embodiment of the present invention is shown, including:
  • the memory is connected to the processor for storing a program and data generated during a running of the program
  • the processor is configured to implement the following functions by running a program stored in the memory:
  • the sending node sends a preset reference signal to the receiving node; the receiving node calculates a channel quality measurement value of the receiving node according to the received reference signal and the preset reference signal; The receiving node feeds back the channel quality measurement value to the sending node, and the sending node calculates a power adjustment value according to the channel quality measurement value and a preset power control target value; The adjustment value adjusts the current transmit power of the sending node.
  • the processor is further configured to:
  • the processor is further configured to:
  • the receiving node calculates a target automatic gain control value according to the reference signal
  • the target automatic gain control value is valid for the next time slot.
  • the interference of the transmit power to other nodes is minimized under the premise of satisfying the current throughput requirement, and the power is saved to extend the working time.
  • the adjustment of the AGC of the receiving node is also realized while the power is being adjusted.

Abstract

一种无线MESH网络功率调整方法、装置及设备，该方法包括：通过吞吐量确定功控目标值，并在测量子帧向接收节点发送参考信号，依据参考信号计算接收节点的信道质量，并通过该功控目标值和接收节点的信道质量对发送节点的发送功率进行调整。因此，在满足当前吞吐量需求的前提下，尽量减少了发射功率对其它节点的干扰，并节省了电量延长了工作时长。除此之外，在功率调整的同时，还实现了对接收节点的AGC的调整。

Description

一种无线MESH网络功率调整方法、装置及设备 技术领域
本发明涉及无线MESH网络领域，尤其涉及一种无线MESH网络功率调整方法、装置及设备。
背景技术
无线Mesh网络是由无线路由器组成的多跳网络。主要由无线路由节点、接入点和用户节点组成。因其易于部署，成本较低等特性，无线Mesh网络最初被开发应用于战争和自然灾害等需要快速部署通信网络的情景，又被应用于解决“最后一公里”网络问题。
但是在进行无线MESH网络传输时，发射功率经常是不可调节的，这样，在需要很小的功率即可进行信号传输时，就会产生很多无用的功率，这样不仅增加了电能的消耗，而且，功率过高还会对多个设备之间的信号传输产生干扰。
发明内容
有鉴于此，本发明实施例提供了一种无线MESH网络功率调整方法装置及设备，实现了通过无线MESH网络进行数据传输时，在满足当前吞吐量需求的前提下，尽量减少了发射功率，进而减少了发射功率对其它节点的干扰，节省了电量延长了工作时长。
本发明实施例提供的一种无线MESH网络功率调整方法，包括：
在预设的测量子帧，发送节点向接收节点发送预设的参考信号；
接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；
在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；
所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；
依据所述功率调整值调整发送节点当前的发射功率。
可选的，所述信道质量测量值包括：
参考信号接收功率、单流信道质量指示值、双流信道质量指示值和信道矩阵秩。
可选的，所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值，包括：
所述目标功控值包括：第一目标信道质量指示值、目标信号干扰噪声比；
依据所述信道矩阵确定第二目标信道质量指示值；其中，所述第二目标信道指示值为单流信道质量指示值或者双流信道质量指示值；
根据当前的发射功率和发送参考序列时的发射功率的差值，以及第二目标信道质量指示值对应的信号干扰噪声比,计算补偿信号干扰噪声比；
对所述补偿信号干扰噪声比进行平滑滤波处理，得到平均信号干扰噪声比；
判断所述第二目标信道质量指示值和第一目标信道质量指示值的关系；
若第二目标信道质量指示值等于第一信道质量指示值，功率调整值为0；
若第二目标信道质量指示值大于第一目标信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最大值的差值以及预设的第一阈值的关系，计算功率调整值；
若所述第二目标信道质量指示值小于所述第一信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最小值的差值以及预设的第二阈值的关系，计算功率调整值。
可选的，还包括：
在初始化时，配置系统的目标吞吐量；
依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
可选的，在预设的测量子帧，发送节点向接收节点发送参考信号之后，还包括：
接收节点根据参考信号，计算目标自动增益控制值；
下一时隙生效所述目标自动增益控制值。
本发明实施例提供的一种无线MESH网络功率调整装置，包括：
在预设的测量子帧，发送节点向接收节点发送预设的参考信号；
第一计算单元，用于接收节点依据接收到的参考信号和预设的参考信号， 计算所述接收节点的信道质量测量值；
反馈单元，用于在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；
第二计算单元，用于所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；
调整单元，用于依据所述功率调整值调整发送节点当前的发射功率。
可选的，还包括：
配置单元，用于在初始化时，配置系统的目标吞吐量；
确定单元，用于依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
可选的，还包括：
第三计算单元，用于接收节点根据参考信号，计算目标自动增益控制值；
生效单元，用于下一时隙生效所述目标自动增益控制值。
本发明实施例提供的一种无线MESH网络功率调整设备，包括：
存储器和处理器；
其中，所述存储器与所述处理器连接，用于存储程序，以及程序运行过程中产生的数据；
所述处理器，用于通过运行所述存储器中存储的程序，实现以下功能：
在预设的测量子帧，发送节点向接收节点发送预设的参考信号；接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；依据所述功率调整值调整发送节点当前的发射功率。
可选的，所述处理器还用于：
在初始化时，配置系统的目标吞吐量；
依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
可选的，所述处理器还用于：
接收节点根据参考信号，计算目标自动增益控制值；
下一时隙生效所述目标自动增益控制值。
本发明实施例提供的一种无线MESH网络功率调整方法，通过吞吐量确定功控目标值，在预设的测量子帧，发送节点向接收节点发送预设的参考信号；接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；依据所述功率调整值调整发送节点当前的发射功率。因此，在满足当前吞吐量需求的前提下，尽量减少了发射功率，进而减少了发射功率对其它节点的干扰，节省了电量延长了工作时长。并在功率调整的同时，实现了对接收节点的AGC的调整。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1示出了本发明实施例提供的一种无线MESH网络功率调整方法的流程示意图；
图2示出了计算功率调整值的方法的流程示意图；
图3示出了示出了本发明实施例提供的一种无线MESH网络功率调整装置的结构示意图；
图4示出了本发明实施例提供的一种无线MESH网络功率调整设备的结构图；
图5示出了发射功率和AGC联合调整功率示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参考图1，示出了本发明实施例提供的一种无线MESH网络功率调整方法的流程示意图，在本实施例中，该方法包括：
S101：在预设的测量子帧，发送节点向接收节点发送预设的参考信号；
本实施例中，预设的测量子帧是在系统初始化时设置的，其中测量子帧可以理解为，系统帧的某个固定时隙，每到该固定时隙，发送节点需要向接收节点发送参考信号。
其中，参考信号是预先设置好的，发送节点和接收节点均知道要发送的参考信号是什么。
除此之外，在执行S101之前，还需要确定出发送节点的功控目标值，其中该功控目标值包括：第一目标CQI tar(英文全称：Channel Quality Indicator，中文全称:信道质量指示)、和目标SINR(英文全称：Signal Interference to Noise Rate，中文全称:信号干扰噪声比)，具体的，还包括：
在初始化时，配置系统的目标吞吐量；
依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
本实施例中，该目标功率为在保证系统吞吐量的情况下，最节能的功率。如下表一所示，CQI、SINR和吞吐量具有一一对应关系，其中吞吐量与CQI一一对应，CQI与SINR值一一对应。除此之外，吞吐量可以直接对应SINR；其中SINR值为一个范围值。
表一
Figure PCTCN2018075932-appb-000001
Figure PCTCN2018075932-appb-000002
S102：接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；
本实施例中，预设的参考信号是预先设置的，但是从发送节点将预设的参考信号发出后，由于接收节点的信道质量不同，接收节点接收到的参考信号可能不同于预设的参考信号。
其中，信道质量测量值包括：参考信号接收功率(英文全称：Reference Signal Received Power，英文简称：RSRP)、单流信道质量指示值CQI singleTB、双流信道质量指示值CQI doubleTB和信道矩阵秩(英文全称：Rank Indicator，英文简称：RI)。
S103：在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；
举例说明：由于存在空口时延，并且在下一测量子帧到来之前得保证发送节点来得及解码，进而根据反馈的信息调整功率，接收节点需要在下一测量子 帧之前，至少提前四个子帧向发送节点反馈信道质量测量值。
需要说明的是，接收节点提前多少个子帧向发送节点进行反馈，可以根据实际情况进行确定。
S104：所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；
本实施例中，发送节点采用的发射模式可能是单流也可能是双流，不同的发射模式，对应于不同的CQI的值，不同的CQI的值对应于不同的SINR，并且，对于功率的调整还需要保证SINR在目标SINR的范围内，具体的，参考图2，S104包括：
S201:依据所述信道矩阵确定第二目标信道质量指示值；其中，所述第二目标信道指示值为单流信道质量指示值或者双流信道质量指示值；
S202:根据当前的发射功率和发送参考序列时的发射功率的差值，以及第二目标信道质量指示值对应的信号干扰噪声比,计算信号干扰噪声比的补偿值；
本实施例中，由于当前发射功率相对于发送参考序列时，可能已经进行了功率的调整，也就是说当前的发射功率和发送参考序列时的发射功率是不同的，而信号干扰噪声比的补偿值是相对于当前功率的。并且，本实施例中，如上述表1所示，信道质量指示值CQI与信号干扰噪声比SINR一一对应，因此，根据接收节点发送的第二目标系信道质量指示值CQI choose可以确定信号干扰噪声比SINR，具体的，可以通过如下的公式1)计算信号干扰噪声比的补偿值：
1)补偿-SINR A_B＝SINR A_B+(P t-P t-n)；
其中，补偿-SINR A_B为信号干扰噪声比的补偿值，SINR A_B为第二目标CQL choose对应的信号干扰噪声比，P t为当前的发射功率，P t-n为发送参考信号时的发射功率，A为发送节点，B为接收节点。
S203:对所述补偿信号干扰噪声比进行平滑滤波处理，得到平均信号干扰噪声比；
举例说明：可以通过如下的公式2)计算平均信号干扰噪声比：
2)SINR avg＝c*SINR avg+(1-c)*补偿-SINR A_B；
其中，SINR avg为在补偿SINR进行时域平滑滤波后得到的平均信号干扰噪 声比，c为滤波系数、补偿-SINR A_B为补偿信号干扰噪声比。
S204:判断所述第二目标信道质量指示值和第一目标信道质量指示值的关系；
S205:若第二目标信道质量指示值等于第一信道质量指示值，功率调整值为0；
本实施例中，若是第二目标CQL choose等于第一目标信道质量指示值CQL sar，则无需对功率再进行调整。
S206:若第二目标信道质量指示值大于第一目标信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最大值的差值以及预设的第一阈值的关系，计算功率调整值；
本实施例中，若是CQI choose>CQI tar，可以通过以下公式3)计算功率的调整值：
3)DeltaP＝max{min[(SINR avg-SINR tar_up),0],-6dB}；
其中，CQI choose为第二目标信道质量指示值，CQI tar为第一目标信道质量指示值，DeltaP为功率的调整值，SINR avg为平均信号干扰噪声比，SINR tar_up为目标信号干扰噪声比的最大值。
本实施例中，由于CQI choose>CQI tar时，需要将功率调低，因此功率调整值应该为小于零的值，但是为了防止调整过大，调整值还需要限制在一定的范围内，在本实施例中可以设置为-6dB。因此，第一阈值可以理解为0和-6dB。
S207:若所述第二目标信道质量指示值小于所述第一信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最小值的差值以及预设的第二阈值的关系，计算功率调整值。
本实施例中，若是CQI choose<CQI tar，可以通过以下公式4)计算功率的调整值，
4)DeltaP＝min{max[(SINR tar_low-SINR avg),0],6dB}；
DeltaP为功率的调整值，SINR avg为平均信号干扰噪声比，SINR tar_up为目标信号干扰噪声比的最大值。
本实施例中，由于CQI choose<CQI tar时，需要将功率调高，因此功率调整值应该为大于零的值，但是为了防止调整过大，调整值还需要限制在一定的范围内，在本实施例中可以设置为6dB。因此，第二阈值可以理解为0和6dB。
除此之外，对于功率的调整还应该保证小于预设的最大值，因此，还包括：
根据当前的发射功率和发送参考序列时的发射功率的差值，以及参考信号接收功率,计算发射功率补偿值；
对所述发射功率补偿值进行平滑滤波处理，得到平均功率；
判断平均功率是否大于预设的功率最大值；
若大于，则将所述平均功率和目标功率进行比对，获取功率调整值；
若不大于，执行S201～S206的步骤。
S105：依据所述功率调整值调整发送节点当前的发射功率。
本实施例中，当CQI choose>CQI tar时，调整后的功率P adjust＝max{P t+DeltaP,P min}，即调整后的功率不能小于预设的功率的最小值；当CQI choose<CQI tar，调整后的功率P adjust＝min{P t+DeltaP,P max}，即调整后的额功率不能大于预设的功率的最大值。
本实施例中，由于功率的调整，接收节点的自动增益控制AGC需要适应功率的调整，因此还包括：
接收节点根据参考信号，计算目标自动增益控制值；
下一时隙生效所述目标自动增益控制值。
举例说明：如图5示出了发射功率和AGC联合调整功率示意图。
本实施例中，通过吞吐量确定功控目标值，并在测量子帧向接收节点发送参考信号，依据参考信号计算接收节点的信道质量，并通过该功控目标值和接收节点的信道质量对发送节点的发送功率进行调整。因此，在满足当前吞吐量需求的前提下，尽量减少了发射功率对其它节点的干扰，并节省了电量延长了工作时长。除此之外，在功率调整的同时，还实现了对接收节点的AGC的调整。
参考图3，示出了本发明实施例提供的一种无线MESH网络功率调整装置，包括：
在预设的测量子帧301，发送节点向接收节点发送预设的参考信号；
第一计算单元302，用于接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；
反馈单元303，用于在预设的时间内，所述接收节点将所述信道质量测量 值反馈给所述发送节点；
第二计算单元304，用于所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；
调整单元305，用于依据所述功率调整值调整发送节点当前的发射功率。
可选的，还包括：
配置单元，用于在初始化时，配置系统的目标吞吐量；
确定单元，用于依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
可选的，还包括：
第三计算单元，用于接收节点根据参考信号，计算目标自动增益控制值；
生效单元，用于下一时隙生效所述目标自动增益控制值。
可选的，所述第二计算单元具体用于：
所述目标功控值包括：第一目标信道质量指示值、目标信号干扰噪声比；
依据所述信道矩阵确定第二目标信道质量指示值；其中，所述第二目标信道指示值为单流信道质量指示值或者双流信道质量指示值；
根据当前的发射功率和发送参考序列时的发射功率的差值，以及第二目标信道质量指示值对应的信号干扰噪声比,计算补偿信号干扰噪声比；
对所述补偿信号干扰噪声比进行平滑滤波处理，得到平均信号干扰噪声比；
判断所述第二目标信道质量指示值和第一目标信道质量指示值的关系；
若第二目标信道质量指示值等于第一信道质量指示值，功率调整值为0；
若第二目标信道质量指示值大于第一目标信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最大值的差值以及预设的第一阈值的关系，计算功率调整值；
若所述第二目标信道质量指示值小于所述第一信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最小值的差值以及预设的第二阈值的关系，计算功率调整值。
通过本实施例的装置，实现了在满足当前吞吐量需求的前提下，尽量减少了发射功率对其它节点的干扰，并节省了电量延长了工作时长。除此之外，在功率调整的同时，还实现了对接收节点的AGC的调整。
参考图4，示出了本发明实施例提供的一种无线MESH网络功率调整设备的结构图，包括：
存储器401和处理器402；
其中，所述存储器与所述处理器连接，用于存储程序，以及程序运行过程中产生的数据；
所述处理器，用于通过运行所述存储器中存储的程序，实现以下功能：
在预设的测量子帧，发送节点向接收节点发送预设的参考信号；接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；依据所述功率调整值调整发送节点当前的发射功率。
可选的，所述处理器还用于：
在初始化时，配置系统的目标吞吐量；
依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
可选的，所述处理器还用于：
接收节点根据参考信号，计算目标自动增益控制值；
下一时隙生效所述目标自动增益控制值。
通过本实施例的设备，实现了在满足当前吞吐量需求的前提下，尽量减少了发射功率对其它节点的干扰，并节省了电量延长了工作时长。除此之外，在功率调整的同时，还实现了对接收节点的AGC的调整。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (11)

  1. 一种无线MESH网络功率调整方法，其特征在于，包括：
    在预设的测量子帧，发送节点向接收节点发送预设的参考信号；
    接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；
    在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；
    所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；
    依据所述功率调整值调整发送节点当前的发射功率。
  2. 根据权利要求1所述的方法，其特征在于，所述信道质量测量值包括：
    参考信号接收功率、单流信道质量指示值、双流信道质量指示值和信道矩阵秩。
  3. 根据权利要求2所述的方法，其特征在于，所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值，包括：
    所述目标功控值包括：第一目标信道质量指示值、目标信号干扰噪声比；
    依据所述信道矩阵确定第二目标信道质量指示值；其中，所述第二目标信道指示值为单流信道质量指示值或者双流信道质量指示值；
    根据当前的发射功率和发送参考序列时的发射功率的差值，以及第二目标信道质量指示值对应的信号干扰噪声比,计算补偿信号干扰噪声比；
    对所述补偿信号干扰噪声比进行平滑滤波处理，得到平均信号干扰噪声比；
    判断所述第二目标信道质量指示值和第一目标信道质量指示值的关系；
    若第二目标信道质量指示值等于第一信道质量指示值，功率调整值为0；
    若第二目标信道质量指示值大于第一目标信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最大值的差值以及预设的第一阈值的关系，计算功率调整值；
    若所述第二目标信道质量指示值小于所述第一信道质量指示值，根据所述平均信号干扰噪声比和所述目标信号干扰噪声比的最小值的差值以及预设的第二阈值的关系，计算功率调整值。
  4. 根据权利要求1所述的方法，其特征在于，还包括：
    在初始化时，配置系统的目标吞吐量；
    依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
  5. 根据权利要求1所述的方法，其特征在于，在预设的测量子帧，发送节点向接收节点发送参考信号之后，还包括：
    接收节点根据参考信号，计算目标自动增益控制值；
    下一时隙生效所述目标自动增益控制值。
  6. 一种无线MESH网络功率调整装置，其特征在于，包括：
    在预设的测量子帧，发送节点向接收节点发送预设的参考信号；
    第一计算单元，用于接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量值；
    反馈单元，用于在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；
    第二计算单元，用于所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；
    调整单元，用于依据所述功率调整值调整发送节点当前的发射功率。
  7. 根据权利要求6所述的装置，其特征在于，还包括：
    配置单元，用于在初始化时，配置系统的目标吞吐量；
    确定单元，用于依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
  8. 根据权利要求6所述的装置，其特征在于，还包括：
    第三计算单元，用于接收节点根据参考信号，计算目标自动增益控制值；
    生效单元，用于下一时隙生效所述目标自动增益控制值。
  9. 一种无线MESH网络功率调整设备，其特征在于，包括：
    存储器和处理器；
    其中，所述存储器与所述处理器连接，用于存储程序，以及程序运行过程中产生的数据；
    所述处理器，用于通过运行所述存储器中存储的程序，实现以下功能：
    在预设的测量子帧，发送节点向接收节点发送预设的参考信号；接收节点依据接收到的参考信号和预设的参考信号，计算所述接收节点的信道质量测量 值；在预设的时间内，所述接收节点将所述信道质量测量值反馈给所述发送节点；所述发送节点依据所述信道质量测量值和预设的功控目标值，计算功率调整值；依据所述功率调整值调整发送节点当前的发射功率。
  10. 根据权利要求9所述的设备，其特征在于，所述处理器还用于：
    在初始化时，配置系统的目标吞吐量；
    依据所述目标吞吐量，在预设的关系表中确定出发送节点的功控目标值。
  11. 根据权利要求9所述的设备，其特征在于，所述处理器还用于：
    接收节点根据参考信号，计算目标自动增益控制值；
    下一时隙生效所述目标自动增益控制值。
PCT/CN2018/075932 2018-02-09 2018-02-09 一种无线mesh网络功率调整方法、装置及设备 WO2019153223A1 (zh)

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CN101043236A (zh) * 2006-05-10 2007-09-26 华为技术有限公司 控制网状网络节点发射功率的方法及网状网络节点
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