WO2016165141A1 - 无线通信中调整功率的方法和无线接入点 - Google Patents

无线通信中调整功率的方法和无线接入点 Download PDF

Info

Publication number
WO2016165141A1
WO2016165141A1 PCT/CN2015/076915 CN2015076915W WO2016165141A1 WO 2016165141 A1 WO2016165141 A1 WO 2016165141A1 CN 2015076915 W CN2015076915 W CN 2015076915W WO 2016165141 A1 WO2016165141 A1 WO 2016165141A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
load
access point
wireless access
energy
Prior art date
Application number
PCT/CN2015/076915
Other languages
English (en)
French (fr)
Inventor
庄宏成
张洁涛
别列茨基安德里安
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/076915 priority Critical patent/WO2016165141A1/zh
Priority to CN201580078900.0A priority patent/CN107925961B/zh
Publication of WO2016165141A1 publication Critical patent/WO2016165141A1/zh

Links

Images

Classifications

    • 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
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present invention relate to the field of communications technologies, and, more particularly, to a method and a wireless access point for adjusting power in wireless communications.
  • network energy saving is based on the distribution of users and services, and the wireless access point is dynamically turned off. Improve energy efficiency through dynamic network topology control.
  • this method needs to collect information of users and neighboring cells, and the signaling overhead is large, and is generally applicable to large-time granularity control, often based on centralized control.
  • the embodiment of the invention provides a method for adjusting power and a wireless access point in wireless communication, which can adjust the transmission power of each cell in a distributed manner, and is beneficial to reducing power consumption and interference of each network device.
  • a method for adjusting power in wireless communication comprising: determining, by a wireless access point, a power saving load threshold of a first cell controlled by the wireless access point;
  • the energy-saving load threshold controls the transmit power of the first cell, and the transmit power of the first cell includes the transmit power of the data channel.
  • the determining, by the wireless access point, the energy-saving load threshold of the first cell controlled by the wireless access point includes: acquiring, by the wireless access point The load information of the first cell in the current period; the wireless access point determines the energy-saving load threshold of the first cell in the next period according to the load information of the first cell in the current period.
  • the wireless access point determines, according to load information of the first cell in a current period, The energy-saving load threshold of a cell in the next period includes: the wireless access point acquires load information of the second cell in the current period, and determines that the first cell and the second cell are in the current period The load average value; the wireless access point acquires a network load balancing target value; the wireless access point determines an energy-saving load threshold of the first cell according to the load average of the current period and the network load balancing target value.
  • the wireless access point determines, according to load information of the first cell in a current period,
  • the energy-saving load threshold of a cell in the next period includes: the wireless access point reporting, to the controller, load information of the first cell in a current period, where load information of the first cell in the current period is controlled
  • the device is configured to determine an energy-saving load threshold of the first cell in a next period; and receive an energy-saving load threshold of the first cell that is sent by the controller in a next period.
  • the wireless access point determines, according to load information of the first cell in a current period,
  • the energy-saving load threshold of a cell in the next period includes: determining, by the wireless access point, the first information according to the load information of the first cell in the previous period and the load information of the first cell in the current period. a current load change amount of the cell; the wireless access point acquires a network load balancing target value; and the wireless access point determines the first cell according to the load change amount of the first cell and the load balancing target value Energy-saving load threshold.
  • the wireless access point controls, according to the energy saving load threshold, The transmit power of the cell includes: the wireless access point determines a current load of the first cell; if the current load of the first cell is less than the energy-saving load threshold, the wireless access point is according to the first cell The current transmit power is used to determine a decrease in the transmit power of the first cell; and the wireless access point performs a decrease operation of the transmit power of the first cell according to a decrease in the transmit power of the first cell.
  • the wireless access point performs the foregoing manner according to a reduction degree of a transmit power of the first cell
  • the current transmit power reduction operation of a cell includes: the wireless access point sets a sum of a current transmit power of the first cell and the reduced amplitude as the adjusted The transmit power, the adjusted transmit power of the first cell is greater than a power minimum threshold.
  • the transmit power of the first cell includes a transmit power of a control channel.
  • the method further includes: reducing, by the wireless access point, a transmit power of the first cell The amplitude is determined as an offset parameter of the first cell, and the offset parameter of the cell is sent to the user equipment, where the user equipment performs a cell reselection operation according to the offset parameter.
  • a second aspect provides a wireless access point device, including: a first determining unit, where the first determining unit is configured to determine a power saving load threshold of a first cell controlled by the wireless access point; and a control unit The control unit is configured to control, according to the energy-saving load threshold determined by the determining unit, a transmit power of the first cell, where a transmit power of the first cell includes a transmit power of a data channel.
  • the wireless access point further includes an acquiring unit, where the acquiring unit is configured to: acquire load information of the first cell in a current period Obtaining, according to the load information of the first cell in the current period, the energy-saving load threshold of the first cell in the next period.
  • the acquiring unit is specifically configured to: acquire load information of the second cell in the current period, and Determining a load average of the first cell and the second cell in the current period; acquiring a network load balancing target value; determining the first cell according to the load average of the current period and the network load balancing target value Energy-saving load threshold.
  • the acquiring unit further includes: a first sending unit, where the first sending unit is used to the controller And reporting, by the controller, the load information of the first cell in the current period, where the controller is used by the controller according to the load information of the first cell in the current period to determine the energy-saving load of the first cell in the next period.
  • a receiving unit configured to receive an energy-saving load threshold of the first cell sent by the controller in a next period.
  • the acquiring unit is specifically configured to: acquire load information of the first cell in a previous period, and And the load information of the first cell in the current period, and determining, according to the load information of the first cell in the previous period and the load information of the first cell in the current period.
  • the current load change amount of the first cell; the network load balancing target value is obtained; and the energy saving load threshold of the first cell is determined according to the load change amount of the first cell and the load balancing target value.
  • the control unit includes a second determining unit, the second determining unit For determining: a current load of the first cell, where the second determining unit is configured to determine, according to a current transmit power of the first cell, when a current load of the first cell is less than the energy-saving load threshold The reduction of the transmit power of the first cell; the control unit is specifically configured to: perform a lowering operation of the transmit power of the first cell according to a decrease in the transmit power of the first cell.
  • control unit is specifically configured to: transmit a current transmit power of the first cell and the decrease And the first set is the adjusted transmit power of the first cell, and the adjusted transmit power of the first cell is greater than a power minimum threshold.
  • the transmit power of the first cell includes a transmit power of a control channel.
  • the wireless access point further includes: a third determining unit, where the third determining unit is configured to: The amplitude of the reduction of the transmit power of the first cell is determined as an offset parameter of the first cell, and the second sending unit is configured to send an offset parameter of the cell, for the user equipment. Performing a cell reselection operation according to the offset parameter.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • FIG. 1 is a schematic flowchart of a method for adjusting power in wireless communication according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for adjusting power in wireless communication according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for adjusting power in wireless communication according to another embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a wireless access point in accordance with an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a wireless access point according to another embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • a user equipment may be referred to as a terminal (Mobile), a mobile station ("MS” for short) or a mobile terminal (Mobile Terminal).
  • the user equipment can communicate with one or more core networks via a Radio Access Network (“RAN"), for example, the user equipment can be a mobile phone (or “cellular” phone) Or a computer with a mobile terminal, etc., for example, the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • RAN Radio Access Network
  • the wireless access point may be used to communicate with the terminal device
  • the network device may be a Global System of Mobile communication (“GSM”) system or a base station in a Code Division Multiple Access (“CDMA”) (Base Transceiver Station, abbreviated as “BTS” ”), may also be a base station (NodeB, referred to as “NB”) in a Wideband Code Division Multiple Access (WCDMA) system, or may be a Long Term Evolution (Long Term Evolution, referred to as An evolved base station (Evolutional Node B, referred to as "eNB” or “eNodeB”) in the "LTE” system, or an access point (AP) in the WLAN, the wireless access point may be a relay station, a WLAN AP, In-vehicle devices, wearable devices, and base station devices in future 5G networks.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • NB Wideband Code Division Multiple Access
  • AP access point
  • the wireless access point may be a relay station
  • FIG. 1 is a schematic flowchart of a method 100 for adjusting power in wireless communication according to an embodiment of the present invention. As shown in FIG. 1, the method 100 includes:
  • Step 110 The wireless access point determines an energy-saving load threshold of the first cell controlled by the wireless access point.
  • Step 120 The wireless access point controls the transmit power of the first cell according to the energy-saving load threshold, where the transmit power of the first cell includes the transmit power of the data channel.
  • a wireless wireless access point may have only one cell or multiple cells, so the first cell may represent one or more cells controlled by the foregoing wireless access point, and the load of a certain cell.
  • the ratio of the radio resources required by the user equipment in the cell to the total radio resources of the cell may be represented.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • the determining, by the wireless access point, the energy-saving load threshold of the first cell controlled by the wireless access point includes: acquiring, by the wireless access point, load information of the first cell in a current period; The ingress determines the energy-saving load threshold of the first cell in the next period according to the load information of the first cell in the current period.
  • the adjustment of the transmit power of the first cell is based on the adjustment of the energy-saving load threshold of the first cell. If the energy-saving load threshold is set too high, the access of the user equipment is affected, and the energy-saving load threshold is set. Too low will affect the effect of energy saving. Therefore, it is necessary to set the energy-saving load threshold according to the user's service distribution, that is, set the energy-saving load threshold based on the load condition of the cell. It should be understood that The cell load is defined as the ratio between the radio resources required by the serving user equipment and all radio resources.
  • the current period of the first cell loading information or the length of the next period may be determined according to the load change of the first cell, and the load information of the first cell may be the first cell in the period.
  • the average load the invention is not limited thereto.
  • the current period or the length of the next period in which the wireless access point acquires the first cell load information may be determined according to the load change condition of the first cell, for example, the current period or the next period may be set as the cell load change period.
  • the next period refers to a period of time after the current period, and the length may be the same as or different from the current period.
  • the load information of the first cell may be the average load of the first cell in the period, and the present invention is not limited thereto. this.
  • the energy-saving load threshold of the first cell in the next cycle may be determined according to the load threshold of the current cycle, so that the energy-saving control of the small-time granularity corresponding to the dynamic change of the system load can be performed, and the distributed control is further implemented. Efficient control.
  • the determining, by the wireless access point, the energy-saving load threshold of the first cell in the next period according to the load information of the first cell in the current period includes: acquiring, by the wireless access point, the second cell at the current The load information in the period, and determining the load average of the first cell and the second cell in the current period; the wireless access point acquiring the network load balancing target value; the wireless access point determining according to the current period load average and the network load balancing target value The energy-saving load threshold of the first cell.
  • the second cell refers to one or more cells in the entire network except the first cell.
  • the second cell may be a cell controlled by a neighboring access point of the foregoing wireless access point, and the present invention does not Limited to this.
  • the wireless access point may determine the load average value in the current period according to the load information of the first cell and the second cell in the current period.
  • the wireless access point may acquire the network load balancing target value according to the operator policy or the access control threshold of the wireless access point.
  • the wireless access point determines the energy-saving load threshold of the first cell according to the load average of the current period and the network load balancing target value, and calculates the energy-saving load threshold of each cell according to formula (1), and formula (1) is as follows: :
  • ⁇ is a smoothing coefficient, for example, it can be set to 0.5
  • ⁇ thr is the energy-saving load threshold of the cell
  • ⁇ avg is the target value of the network load balancing.
  • the wireless access point may set the energy-saving load threshold of the first cell, or may The energy-saving load threshold of one cell is sent to other wireless access points in the network, so that other wireless access points are set according to the energy-saving load threshold, so that the control of the cell transmission power can be performed according to the energy-saving load threshold.
  • the determining, by the wireless access point, the energy-saving load threshold of the first cell in the next period according to the load information of the first cell in the current period includes: the wireless access point reporting the first to the controller The load information of the cell in the current period, the load information of the first cell in the current period is used by the controller to determine the energy-saving load threshold of the first cell in the next cycle; and the energy saving of the first cell sent by the receiving controller in the next cycle Load threshold.
  • controller may be located at a wireless access point or as a separate network device independent of any one of the wireless access points.
  • the controller can uniformly configure the energy-saving load threshold of each wireless access point, that is, the energy-saving load threshold of each cell can be uniformly configured, and the specific steps are as follows: the controller acquires all the cells in the first period. The controller obtains the target value of the network load balancing, and the target value may be obtained based on the operator policy, or may be set based on the access control threshold of the wireless access point, and the present invention is not limited thereto; The smoothed average of the load balancing value and the load balancing target value is determined as the energy saving load threshold of each wireless access point, and the energy saving load threshold is sent to each wireless access point, so that each wireless access point is based on the energy saving load. Make a unified configuration.
  • the controller determines the energy-saving load threshold according to the load average value of the current period of each cell and the network load balancing target value, and can calculate the energy-saving load threshold according to formula (1), and formula (1) is as follows:
  • ⁇ is a smoothing coefficient, for example, it can be set to 0.5
  • ⁇ thr is the energy-saving load threshold of the cell
  • ⁇ avg is the target value of the network load balancing.
  • the determining, by the wireless access point, the energy-saving load threshold of the first cell in the next period according to the load information of the first cell in the current period includes: the wireless access point is according to the first cell.
  • the load information in one cycle and the load information of the first cell in the current period determine the current load change amount of the first cell; the wireless access point acquires the network load balancing target value; and the wireless access point changes according to the load of the first cell And the load balancing target value determines an energy saving load threshold of the first cell.
  • the wireless access point may separately configure the energy-saving load threshold of the first cell, specifically,
  • the specific steps are as follows: collecting the load and load change trend in the first cycle of the first cell; obtaining the target value of the load balancing of the entire network, and obtaining the target value of the load balancing of the entire network. It can be obtained through the network management system, or obtained through the controller or by looking up the table.
  • Equation (2) is as follows:
  • ⁇ thr,i ⁇ tar - ⁇ tar sign( ⁇ i ) ⁇ tar (2)
  • ⁇ tar is the preset threshold of the system and can be set to 10%.
  • Sign( ⁇ i ) is the trend of the load change of the cell i. When the load becomes small, the value is -1. When it becomes larger, the value is +1. Otherwise, the value is 0.
  • the energy-saving load threshold is above the target value of the load balancing of the whole network, and the amplitude is a preset threshold; otherwise, the energy-saving load threshold is below the target value of the load balancing of the whole network, and the amplitude is a preset threshold.
  • the wireless access point controls the transmit power of the cell according to the energy-saving load threshold, where the wireless access point determines the current load of the first cell, and the current load of the first cell is less than the energy-saving load threshold. And determining, by the wireless access point, the reduction of the transmit power of the first cell according to the current transmit power of the first cell; and performing, by the wireless access point, the decrease of the transmit power of the first cell according to the decrease of the transmit power of the first cell .
  • the wireless access point may select the current time of the first cell according to the actual situation, and if the current load measured by the first cell at the first time is less than the energy-saving load threshold, the wireless access point may be based on the wireless access point.
  • the current transmit power of the first cell determines the magnitude of the decrease of the transmit power of the first cell.
  • the magnitude of the power adjustment may be determined according to formula (3). Equation (3) is as follows:
  • p n,i is the current transmit power of the i-th cell
  • ⁇ n,i and ⁇ thr,i are the current measurement load and the energy-saving load threshold of the i-th cell , respectively.
  • the performing, by the radio access point, the performing the lowering of the transmit power of the first cell according to the reduced amplitude of the transmit power of the first cell includes: if the current transmit power of the first cell is the same as the first The difference between the reduction amplitudes of the transmit power of a cell is greater than the minimum power threshold, and the transmit power of the first cell is updated to be the difference between the current transmit power of the first cell and the reduced amplitude.
  • the radio access point performs the operation of reducing the transmit power of the first cell according to the reduced amplitude of the transmit power of the first cell, including: the transmit power of the wireless access point according to the first cell Reduction amplitude and power threshold, performing the transmit power of the first cell Reduce the operation.
  • the wireless access point reduces the current transmit power, otherwise, does not reduce the transmit. power.
  • the wireless access point continues to measure the current load of the first cell at the second moment.
  • the current load of the first cell at the second time is less than the energy-saving load threshold, the continuation of the reduction according to the transmit power of the first cell is performed.
  • the adjusted transmission power can be determined according to the formula (4), and the formula (4) is as follows:
  • the method provided by the embodiment of the present invention can dynamically adjust the transmit power, and can adapt to the dynamic change of the load. After the transmit power of the low-load cell is reduced, the energy consumption can be reduced, and the interference to other cells or wireless access points can be reduced. It can reduce the load of other high-load wireless access points, and the load on the whole network tends to be balanced.
  • the transmit power of the first cell further includes a transmit power of a control channel.
  • adjusting the power of the data channel is also an adjustment of the control channel, that is, the embodiment of the present invention is also used to save the power of the control channel.
  • the method further includes: determining, by the wireless access point, the offset parameter of the first cell according to the reduced amplitude of the transmit power of the first cell; and transmitting the offset parameter of the cell to the user equipment. For the user equipment to perform a cell reselection operation according to the offset parameter.
  • the offset of the first cell may be determined according to the formula (5), and the formula (5) is as follows:
  • Offset n+1,i is the adjusted cell offset
  • ⁇ p n+1, i is the current power reduction range of the wireless access point i.
  • the method provided by the embodiment of the present invention may send the cell offset parameter to the user equipment, so that the user equipment maintains the same user association, and reduces unnecessary handover.
  • the cell reselection operation needs to be performed according to the cell offset parameter.
  • the user equipment when the user equipment selects, reselects, or camps on the cell, the user equipment is generally selected to receive the cell with the strongest channel strength.
  • the control channel power of the serving cell When the control channel power of the serving cell is adjusted, the user equipment in the cell will perform the following adjustment according to the received cell offset parameter, as shown in formula (6):
  • the RSRP is the reference signal receiving strength (English: Reference Signal Receiving Power, short: RSRP). That is to say, the user equipment selects the cell with the largest sum of the reference signal receiving strength and the cell offset parameter as the serving cell.
  • the user equipment when the user equipment performs the handover decision, it also depends on the received signal changes of the serving cell and the neighboring cell.
  • the cell offset parameter also needs to be considered, and the present invention is not limited thereto.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • FIG. 2 is a schematic flowchart of a method for adjusting power in wireless communication according to an embodiment of the present invention. As shown in Figure 2, the method includes:
  • Step 210 Determine an energy-saving load threshold of each wireless access point based on distribution statistics of user services.
  • Step 220 The wireless access point whose current load is lower than the energy-saving load threshold adjusts the transmit power of the wireless access point.
  • Step 230 The wireless access point whose current load is lower than the energy-saving load threshold determines a cell offset parameter according to the transmit power of the wireless access point, and sends the offset parameter to the user equipment.
  • Step 240 The user equipment performs cell selection, camping, or handover based on the offset parameter of the cell.
  • each wireless access point may separately configure an energy-saving load threshold, or may be A wireless access point or controller performs unified configuration, and the present invention is not limited thereto.
  • the steps of uniformly setting the energy-saving load threshold of each wireless access point by the controller are as follows:
  • Each wireless access point periodically counts its load and reports it to the controller
  • the controller calculates the mean ⁇ avg of the load of all wireless access points
  • the controller obtains a target value ⁇ tar of the network load balancing, and the target value may be set based on an operator's policy, or may be set based on an access control threshold of the wireless access point;
  • the controller determines a smooth average of the statistical load mean and load balancing target values as the energy-saving load threshold for each wireless access point:
  • ⁇ thr ⁇ avg +(1- ⁇ ) ⁇ tar
  • ⁇ is a smoothing coefficient, which can be set to 0.5
  • ⁇ thr is the energy-saving load threshold of the wireless access point, and all the wireless access points under the controller are uniformly set.
  • the steps of separately configuring the energy-saving load threshold by each wireless access point are as follows:
  • ⁇ cur,i and ⁇ prv,i are the current load of the wireless access point i and the load of the last statistics
  • ⁇ thr,i ⁇ tar - ⁇ tar sign( ⁇ i ) ⁇ tar
  • ⁇ tar is the preset threshold of the system and can be set to 10%.
  • Sign( ⁇ i ) is the trend of the load change of the wireless access point i. When the load becomes small, the value is -1. When it becomes larger, the value is +1. Otherwise, the value is 0.
  • the energy-saving load threshold is above the target value of the load balancing of the entire network, and the amplitude is a preset threshold; otherwise, the energy-saving load threshold is below the target value of the network-wide load balancing, and the amplitude is preset. Threshold.
  • each wireless access point adjusts the transmit power as follows:
  • the minimum power threshold is to ensure a certain network coverage and quality of service (English: Quality of Service shorthand: QoS) requirements. In a dense network scenario, the minimum threshold can be set small;
  • the wireless access point sends the new cell offset parameters to the user to maintain the same user association and reduce unnecessary handovers.
  • step 240 when the user receives the cell offset parameter sent by the wireless access point, it needs to be applied in time.
  • operations related to the power domain such as cell reselection, handover decision, etc., need to be adjusted accordingly.
  • the user can perform the following operations:
  • the cell When the user selects/reselects/residents, the cell usually receives the cell with the highest signal strength. When the pilot power of the serving cell is adjusted, the user in the cell receives the cell offset parameter. At this time, the cell selection is as follows:
  • the handover decision is also an operation involving the power domain, depending on the received signal changes of the serving cell and the neighboring cell, in which case a cell offset is also required.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • FIG. 3 is a schematic flowchart of a method for saving energy of a dense radio access network according to an embodiment of the present invention.
  • the method 300 can be performed by a wireless access point device, as shown in FIG. 3, the method includes:
  • step 301 the current load is measured.
  • Step 302 Determine whether the current load is less than the energy-saving load threshold. If the current load is not less than the energy-saving load threshold, end the power adjustment; if the current load is less than the energy-saving load threshold, continue to participate in the adjustment of the transmit power.
  • step 303 the magnitude of the power adjustment is determined.
  • Step 304 performing power adjustment based on the power adjustment amplitude.
  • Step 305 Determine whether the adjusted transmit power is greater than a minimum threshold power. If the adjusted transmit power is not higher than the minimum threshold power, the power adjustment is ended; if the adjusted transmit power is higher than the minimum threshold power, it is further determined whether the current load is still less than the energy-saving load threshold, and if the current load is less than the energy-saving load threshold at this time Then, the transmission power adjustment is continued.
  • step 303 the magnitude of each power adjustment needs to be determined.
  • the magnitude of the power adjustment can be determined according to formula (3), and equation (3) is as follows:
  • p n,i is the current transmit power of the i-th cell
  • ⁇ n,i and ⁇ thr,i are the current measurement load and the energy-saving load threshold of the i-th cell , respectively.
  • step 304 power adjustment is performed based on the power adjustment amplitude.
  • the adjusted transmission power can be determined according to the formula (4), and the formula (4) is as follows:
  • the method provided by the embodiment of the present invention can dynamically adjust the transmit power, and can adapt to the dynamic change of the load. After the transmit power of the low-load cell is reduced, the energy consumption can be reduced, and the interference to other cells or wireless access points can be reduced. It can reduce the load of other high-load wireless access points, and the load on the whole network tends to be balanced.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • a wireless access point device 400 includes:
  • the first determining unit 410 is configured to determine a power saving load threshold of the first cell controlled by the wireless access point.
  • the control unit 420 is configured to control, according to the energy-saving load threshold determined by the determining unit, a transmit power of the first cell, where the transmit power of the first cell includes a transmit power of the data channel.
  • a wireless wireless access point may have only one cell, or may have multiple cells. Therefore, the first cell may represent one or more cells controlled by the foregoing wireless access point, and the load of a certain cell may be used in the cell. The ratio of the radio resources required by the user equipment to the total radio resources of the cell.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing
  • the distributed control of the transmit power of each cell helps to reduce the power consumption of the entire access network and the interference between the various network devices.
  • the wireless access point further includes an acquiring unit, configured to: acquire load information of the first cell in a current period; and obtain, according to load information of the first cell in a current period.
  • the energy-saving load threshold of the first cell in the next cycle is an acquiring unit, configured to: acquire load information of the first cell in a current period; and obtain, according to load information of the first cell in a current period. The energy-saving load threshold of the first cell in the next cycle.
  • the adjustment of the transmit power of the first cell is based on the adjustment of the energy-saving load threshold of the first cell. If the energy-saving load threshold is set too high, the access of the user equipment is affected, and the energy-saving load threshold is set. Too low will affect the effect of energy saving. Therefore, it is necessary to set the energy-saving load threshold according to the user's service distribution, that is, set the energy-saving load threshold based on the load condition of the cell. It should be understood that the cell load is defined as the ratio between the radio resources required by the serving user equipment and all radio resources.
  • the current period of the first cell loading information or the length of the next period may be determined according to the load change of the first cell, and the load information of the first cell may be the first cell in the period.
  • the average load the invention is not limited thereto.
  • the current period or the length of the next period in which the wireless access point acquires the first cell load information may be determined according to the load change condition of the first cell, for example, the current period or the next period may be set as the cell load change period.
  • the next period refers to a period of time after the current period, and the length may be the same as or different from the current period.
  • the load information of the first cell may be the average load of the first cell in the period, and the present invention is not limited thereto. this.
  • the energy-saving load threshold of the first cell in the next cycle may be determined according to the load threshold of the current cycle, so that the energy-saving control of the small-time granularity corresponding to the dynamic change of the system load can be performed, and the distributed control is further implemented. Efficient control.
  • the acquiring unit may be located at a certain wireless access point, or may be used as a single device to uniformly control each wireless access point in the network, and the present invention is not limited thereto.
  • the acquiring unit is specifically configured to: acquire load information of the second cell in the current period, and determine a load average value of the first cell and the second cell in the current period; and obtain a network load balancing target. Value; determining the energy-saving load threshold of the first cell according to the load average of the current period and the network load balancing target value.
  • the second cell refers to one or more cells in the entire network except the first cell.
  • the second cell may be a cell controlled by a neighboring access point of the foregoing wireless access point, and the present invention does not Limited to this.
  • the wireless access point may be based on the load of the first cell and the second cell in the current cycle. The information determines the load average over the current period.
  • the wireless access point may acquire the network load balancing target value according to the operator policy or the access control threshold of the wireless access point.
  • the wireless access point determines the energy-saving load threshold of the first cell according to the load average of the current period and the network load balancing target value, and calculates the energy-saving load threshold of each cell according to formula (1), and formula (1) is as follows: :
  • ⁇ is a smoothing coefficient, for example, it can be set to 0.5
  • ⁇ thr is the energy-saving load threshold of the cell
  • ⁇ avg is the target value of the network load balancing.
  • the wireless access point may set the energy-saving load threshold of the first cell, or may send the energy-saving load threshold of the first cell to other wireless access points in the network, so that other wireless access points can be used according to the energy-saving load.
  • the threshold is set so that the control of the cell transmission power can be performed according to the energy-saving load threshold.
  • the acquiring unit further includes: a first sending unit, where the first sending unit is configured to report, to the controller, load information of the first cell in a current period, where the first cell is in the current period.
  • the load information is used by the controller to determine the energy-saving load threshold of the first cell in the next period; and the receiving unit is configured to receive the energy-saving load threshold of the first cell sent by the controller in the next period.
  • controller may be located at a wireless access point or as a separate network device independent of any one of the wireless access points.
  • the controller can uniformly configure the energy-saving load threshold of each wireless access point, that is, the energy-saving load threshold of each cell can be uniformly configured, and the specific steps are as follows: the controller acquires all the cells in the first period. The controller obtains the target value of the network load balancing, and the target value may be obtained based on the operator policy, or may be set based on the access control threshold of the wireless access point, and the present invention is not limited thereto; The smoothed average of the load balancing value and the load balancing target value is determined as the energy saving load threshold of each wireless access point, and the energy saving load threshold is sent to each wireless access point, so that each wireless access point is based on the energy saving load. Make a unified configuration.
  • the controller determines the energy-saving load threshold according to the load average value of the current period of each cell and the network load balancing target value, and can calculate the energy-saving load threshold according to formula (1), and formula (1) is as follows:
  • ⁇ is a smoothing coefficient, for example, it can be set to 0.5
  • ⁇ thr is the energy-saving load threshold of the cell
  • ⁇ avg is the target value of the network load balancing.
  • the acquiring unit is specifically configured to: acquire load information of the first cell in the previous period and load information of the first cell in the current period, and according to the first cell in the previous cycle, The load information in the current cell and the load information in the current period of the first cell determine the current load change amount of the first cell; acquire the network load balancing target value; determine the first cell according to the load change amount of the first cell and the load balancing target value Energy-saving load threshold.
  • the wireless access point may separately configure the energy-saving load threshold of the first cell.
  • the specific steps are as follows: collecting the load and load change trend in the first cycle of the first cell.
  • Obtaining the target value of the load balancing of the entire network, and obtaining the target value of the load balancing of the entire network may be obtained through the network management system, or obtained by the controller or by looking up the table.
  • ⁇ thr,i ⁇ tar - ⁇ tar sign( ⁇ i ) ⁇ tar (2)
  • ⁇ tar is the preset threshold of the system and can be set to 10%.
  • Sign( ⁇ i ) is the trend of the load change of the cell i. When the load becomes small, the value is -1. When it becomes larger, the value is +1. Otherwise, the value is 0.
  • the energy-saving load threshold is above the target value of the load balancing of the whole network, and the amplitude is a preset threshold; otherwise, the energy-saving load threshold is below the target value of the load balancing of the whole network, and the amplitude is a preset threshold.
  • control unit includes a second determining unit, where the second determining unit is configured to: determine a current load of the cell; and when the current cell load energy threshold of the first cell is used, according to the first cell The current transmit power is used to determine a decrease in the transmit power of the first cell.
  • the control unit is specifically configured to: perform a lowering operation of the transmit power of the first cell according to the decrease of the transmit power of the first cell.
  • the wireless access point may measure the current load condition of the first cell according to the actual situation. If the current load of the first cell is less than the energy-saving load threshold, the wireless access point may determine according to the current transmit power of the first cell.
  • the magnitude of the reduction of the transmission power of the first cell, specifically, the magnitude of the power adjustment can be determined according to formula (3), and equation (3) is as follows:
  • p n,i is the current transmit power of the i-th cell
  • ⁇ n,i and ⁇ thr,i are the current measurement load and energy-saving load threshold of the i-th cell , respectively.
  • control unit is specifically configured to: if the difference between the current transmit power of the first cell and the transmit power of the first cell is greater than a minimum power threshold, the first cell is transmitted.
  • the power update is the difference between the current transmit power and the reduced amplitude of the first cell.
  • the adjusted transmission power can be determined according to the formula (4), and the formula (4) is as follows:
  • the method provided by the embodiment of the present invention can dynamically adjust the transmit power, and can adapt to the dynamic change of the load. After the transmit power of the low-load cell is reduced, the energy consumption can be reduced, and the interference to other cells or wireless access points can be reduced. It can reduce the load of other high-load wireless access points, and the load on the whole network tends to be balanced.
  • the transmit power of the first cell further includes a transmit power of a control channel.
  • adjusting the power of the data channel is also an adjustment of the control channel, that is, the embodiment of the present invention is also used to save the power of the control channel.
  • the wireless access point further includes: a third determining unit, configured to determine an offset parameter of the first cell according to a reduced amplitude of the transmit power of the first cell. a second sending unit, configured to send an offset parameter of the cell, for the user equipment to perform a cell reselecting operation according to the offset parameter.
  • the offset of the first cell may be determined according to the formula (5), and the formula (5) is as follows:
  • Offset n+1,i is the adjusted cell offset
  • ⁇ p n+1, i is the current power reduction range of the wireless access point i.
  • the method provided by the embodiment of the present invention may send the cell offset parameter to the user equipment, so that the user equipment maintains the same user association, and reduces unnecessary handover.
  • the cell reselection operation needs to be performed according to the cell offset parameter.
  • the user equipment when the user equipment selects, reselects, or camps on the cell, the user equipment is generally selected to receive the cell with the strongest channel strength.
  • the control channel power of the serving cell When the control channel power of the serving cell is adjusted, the user equipment in the cell will perform the following adjustment according to the received cell offset parameter, as shown in formula (6):
  • the RSRP is the reference signal receiving strength (English: Reference Signal Receiving Power, short: RSRP). That is to say, the user equipment selects the cell with the largest sum of the reference signal receiving strength and the cell offset parameter as the serving cell.
  • the user equipment when the user equipment performs the handover decision, it also depends on the received signal changes of the serving cell and the neighboring cell.
  • the cell offset parameter also needs to be considered, and the present invention is not limited thereto.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • a wireless access point device 400 in accordance with an embodiment of the present invention may correspond to performing the method 100 of adjusting power in wireless communication in an embodiment of the present invention, and the above and other operations of various units in the wireless access point device 400.
  • the details of the respective processes in FIG. 1 to FIG. 3 are not described here.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • an embodiment of the present invention further provides a wireless access point device 500, which includes a processor 510, a memory 520, and a bus system 530.
  • the processor 510 and the memory 520 are connected to each other by a bus system 530 for storing instructions for executing instructions stored in the memory 520.
  • the processor 510 is configured to: determine an energy-saving load threshold of the first cell controlled by the wireless access point; and control, according to the energy-saving load threshold determined by the determining unit, a transmit power of the first cell, where the transmit power of the first cell includes a data channel Transmit power.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing
  • the distributed control of the transmit power of each cell helps to reduce the power consumption of the entire access network and the interference between the various network devices.
  • the processor 510 may be a central processing unit (“CPU"), and the processor 510 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 520 can include read only memory and random access memory and provides instructions and data to the processor 510. A portion of the memory 520 may also include a non-volatile random access memory. For example, the memory 520 can also store information of the device type.
  • the bus system 530 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 530 in the figure.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 510 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 520, and the processor 510 reads the information in the memory 520 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor 510 may invoke the program code stored in the memory 520 to perform the following operations: acquiring load information of the first cell in the current period; and loading information according to the first cell in the current period. Obtain the energy-saving load threshold of the first cell in the next cycle.
  • the processor 510 may invoke the program code stored in the memory 520 to perform the following operations: acquiring load information of the second cell in the current period, and determining that the first cell and the second cell are currently The average load of the period; obtain the network load balancing target value; determine the energy-saving load threshold of the first cell according to the load average of the current period and the network load balancing target value.
  • the device 500 further includes: a transmitter 540, configured to report, to the controller, load information of the first cell in a current period, the load signal The information is used by the controller to determine, according to the load information of the first cell in the current period, the energy-saving load threshold of the first cell in the next cycle, and the receiver 550, where the receiver 550 is configured to receive the first cell sent by the controller in the next cycle. Energy-saving load threshold.
  • the processor 510 may invoke the program code stored in the memory 520 to perform the following operations: acquiring load information of the first cell in the previous period and load information of the first cell in the current period. And determining, according to the load information of the first cell in the previous week and the load information of the first cell in the current period, the current load change amount of the first cell; acquiring the network load balancing target value; and according to the load variation of the first cell And the load balancing target value determines the energy saving load threshold of the first cell.
  • the processor 510 may invoke the program code stored in the memory 520 to perform the following operations: determining a current load of the first cell; when the current load cell of the first cell is smaller than the energy-saving load threshold, according to The current transmit power of the first cell determines a decrease rate of the transmit power of the first cell; and performs a decrease operation of the transmit power of the first cell according to the decrease of the transmit power of the first cell.
  • the processor 510 may invoke the program code stored in the memory 520 to perform the following operations: if the difference between the current transmit power of the first cell and the transmit power of the first cell is greater than the minimum power The threshold value is used to update the transmit power of the first cell to the difference between the current transmit power of the first cell and the decrease.
  • the transmit power of the first cell includes a transmit power of the control channel.
  • the processor 510 may invoke the program code stored in the memory 520 to perform the following operations: determining an offset parameter of the first cell according to a decrease in the transmit power of the first cell; the transmitter 540 And an offset parameter used by the first cell to perform a cell reselection operation according to the offset parameter.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • the wireless access point device 500 may correspond to the wireless access point 200 in the embodiment of the present invention, and may correspond to performing a corresponding body in the method 100 according to an embodiment of the present invention, and wirelessly
  • the above and other operations of the various modules in the access point device 500 and/or For the sake of brevity, the functions of the respective methods in FIG. 1 to FIG. 4 are not described here.
  • the method for adjusting power and the wireless access point in the wireless communication may adjust the transmit power of the cell according to the energy-saving load threshold of the cell, thereby implementing distributed control of the transmit power of each cell. It is beneficial to reduce the power consumption of the entire access network and the interference between various network devices.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art or a part of the technical solution.
  • the points may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform various embodiments of the present invention All or part of the steps of the method.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种无线通信中调整功率的方法和无线接入点设备，该无线通信中调整功率的方法包括：无线接入点确定该无线接入点控制的第一小区的节能负载门限（110）；无线接入点根据该节能负载门限控制该第一小区的发射功率，该第一小区的发射功率包括数据信道的发射功率（120）。本发明实施例的无线通信中调整功率的方法和无线接入点设备可以根据小区的负载动态变化调整该小区的发射功率，从而实现分布式控制各个小区的发射功率，有利于降低整个网络功率消耗和各网络设备之间的干扰。

Description

无线通信中调整功率的方法和无线接入点 技术领域
本发明实施例涉及通信技术领域，并且更具体地，涉及一种无线通信中调整功率的方法和无线接入点。
背景技术
为提高网络容量，无线网络的接入点小型化和密集化是无线网络的发展趋势，密集无线接入网(英文：Ultra-dense Network，简写：UDN)通过尽可能的增加短距离的用户接入，提升系统的区域吞吐量。
用户的移动性和业务的时变性，导致网络的系统容量需求是动态变化的，并且这种变化在密集网络下会具有更高的动态性。在充分发挥网络的使用效率下，需要有效的提升能耗效率。
传统方法中，网络节能基于用户和业务的分布，动态关断无线接入点。通过动态的网络拓扑控制，提升能耗效率。然而，这种方法需要收集用户和相邻小区的信息，信令开销很大，一般适用于大时间粒度的控制，常常基于集中式控制。
发明内容
本发明实施例提供了一种无线通信中调整功率的方法和无线接入点，能够分布式调整各小区的发射功率，有利于降低各网络设备的功率消耗和干扰。
第一方面，提供了一种无线通信中调整功率的方法，该方法包括：无线接入点确定所述无线接入点控制的第一小区的节能负载门限；所述无线接入点根据所述节能负载门限控制所述第一小区的发射功率，所述第一小区的发射功率包括数据信道的发射功率。
结合第一方面，在第一方面的第一种可能的实现方式中，所述无线接入点确定所述无线接入点控制的第一小区的节能负载门限包括：所述无线接入点获取所述第一小区在当前周期内的负载信息；所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限包括：所述无线接入点获取第二小区在所述当前周期内的负载信息，并确定所述第一小区和所述第二小区在所述当前周期的负载均值；所述无线接入点获取网络负载均衡目标值；所述无线接入点根据所述当前周期的负载均值和所述网络负载均衡目标值确定所述第一小区的节能负载门限。
结合第一方面的第一种可能的实现方式，在第一方面的第三种可能的实现方式中，所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限包括：所述无线接入点向控制器上报所述第一小区在当前周期内的负载信息，所述第一小区在当前周期的负载信息被所述控制器用于确定所述第一小区在下一周期内的节能负载门限；；接收所述控制器发送的所述第一小区在下一周期内的节能负载门限。
结合第一方面的第一种可能的实现方式，在第一方面的第四种可能的实现方式中，所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限包括：所述无线接入点根据所述第一小区在上一周期内的负载信息以及所述第一小区在当前周期的负载信息，确定所述第一小区的当前负载变化量；所述无线接入点获取网络负载均衡目标值；所述无线接入点根据所述第一小区的负载变化量和所述负载均衡目标值确定所述第一小区的节能负载门限。
结合第一方面或第一方面的第一至第四种可能的实现方式，在第一方面的第五种可能的实现方式中，所述无线接入点根据所述节能负载门限，控制所述小区的发射功率包括：所述无线接入点确定所述第一小区的当前负载；若所述第一小区的当前负载小于所述节能负载门限，所述无线接入点根据所述第一小区当前的发射功率，确定所述第一小区的发射功率的降低幅度；所述无线接入点根据所述第一小区的发射功率的降低幅度，执行所述第一小区的发射功率的降低操作。
结合第一方面的第五种可能的实现方式，在第一方面的第六种可能的实现方式中，所述无线接入点根据所述第一小区的发射功率的降低幅度，执行所述第一小区的当前发射功率的降低操作包括：所述无线接入点将所述第一小区当前的发射功率与所述降低幅度之和设置为所述第一小区调整后的发 射功率，所述第一小区调整后的发射功率大于功率最低门限值。
结合第一方面或第一方面的第一至第六种可能的实现方式，在第一方面的第七种可能的实现方式中，所述第一小区的发射功率包括控制信道的发射功率。
结合第一方面的第七种可能的实现方式，在第一方面的第八种可能的实现方式中，所述方法还包括：所述无线接入点将所述第一小区的发射功率的降低幅度确定为所述第一小区的偏移参数；向用户设备发送所述小区的偏移参数，以用于用户设备根据所述偏移参数进行小区重选操作。
第二方面，提供了一种无线接入点设备，包括：第一确定单元，所述第一确定单元用于确定所述无线接入点控制的第一小区的节能负载门限；控制单元，所述控制单元用于根据所述确定单元确定的节能负载门限，控制所述第一小区的发射功率，所述第一小区的发射功率包括数据信道的发射功率。
结合第二方面，在第二方面的第一种可能的实现方式中，所述无线接入点还包括获取单元，所述获取单元用于：获取所述第一小区在当前周期内的负载信息；根据所述第一小区在当前周期内的负载信息获取所述第一小区在下一周期内的节能负载门限。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述获取单元具体用于：获取第二小区在所述当前周期内的负载信息，并确定所述第一小区和所述第二小区在所述当前周期的负载均值；获取网络负载均衡目标值；根据所述当前周期的负载均值和所述网络负载均衡目标值确定所述第一小区的节能负载门限。
结合第二方面的第一种可能的实现方式，在第二方面的第三种可能的实现方式中，所述获取单元还包括：第一发送单元，所述第一发送单元用于向控制器上报所述第一小区在当前周期内的负载信息，所述控制器根据所述第一小区在当前周期的负载信息被用于所述控制器确定所述第一小区在下一周期内的节能负载门限；接收单元，所述接收单元用于接收所述控制器发送的所述第一小区在下一周期内的节能负载门限。
结合第二方面的第一种可能的实现方式，在第二方面的第四种可能的实现方式中，所述获取单元具体用于：获取所述第一小区在上一周期内的负载信息以及所述第一小区在当前周期内的负载信息，并根据所述第一小区在上一周期内的负载信息以及所述第一小区在当前周期内的负载信息确定所述 第一小区的当前负载变化量；获取网络负载均衡目标值；根据所述第一小区的负载变化量和所述负载均衡目标值确定所述第一小区的节能负载门限。
结合第二方面或第二方面的第一至第四种可能的实现方式，在第一方面的第五种可能的实现方式中，所述控制单元包括第二确定单元，所述第二确定单元用于：确定所述第一小区的当前负载；所述第二确定单元用于在所述第一小区的当前负载小于所述节能负载门限时，根据所述第一小区当前的发射功率，确定所述第一小区的发射功率的降低幅度；所述控制单元具体用于：根据所述第一小区的发射功率的降低幅度，执行所述第一小区的发射功率的降低操作。
结合第二方面的第五种可能的实现方式，在第二方面的第六种可能的实现方式中，所述控制单元具体用于：将所述第一小区当前的发射功率与所述降低幅度之和第一置为所述第一小区调整后的发射功率，所述第一小区调整后的发射功率大于功率最低门限值。
结合第二方面或第二方面的第一至第六种可能的实现方式，在第二方面的第七种可能的实现方式中，所述第一小区的发射功率包括控制信道的发射功率。
结合第二方面的第七种可能的实现方式，在第二方面的第八种可能的实现方式中，所述无线接入点还包括：第三确定单元，所述第三确定单元用于将所述第一小区的发射功率的降低幅度确定为所述第一小区的偏移参数；第二发送单元，所述第二发送单元用于发送所述小区的偏移参数，以用于用户设备根据所述偏移参数进行小区重选操作。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，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，还可以根据这些附图获得其他的附图。
图1是本发明实施例的无线通信中调整功率的方法的示意性流程图。
图2是本发明实施例提供的无线通信中调整功率的方法的示意性流程图。
图3是本发明另一实施例提供的无线通信中调整功率的方法的示意性流程图。
图4是本发明实施例无线接入点的示意性框图。
图5是本发明另一实施例的无线接入点的示意性框图。
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，所描述的实施例是本发明的一部分实施例，而不是全部实施例。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的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
应理解，本发明实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，简称为“GSM”)系统、码分多址(Code Division Multiple Access，简称为“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access，简称为“WCDMA”)系统、通用分组无线业务(General Packet Radio Service，简称为“GPRS”)、长期演进(Long Term Evolution，简称为“LTE”)系统、LTE频分双工(Frequency Division Duplex，简称为“FDD”)系统、LTE时分双工(Time Division Duplex，简称为“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System，简称为“UMTS”)或全球互联微波接入(Worldwide Interoperability for Microwave Access，简称为“WiMAX”)通信系统等。
还应理解，在本发明实施例中，用户设备(User Equipment，简称为“UE”)可称之为终端(Terminal)、移动台(Mobile Station，简称为“MS”)或移动终端(Mobile Terminal)等，该用户设备可以经无线接入网(Radio Access Network，简称为“RAN”)与一个或多个核心网进行通信，例如，用户设备可以是移动电话(或称为“蜂窝”电话)或具有移动终端的计算机等，例如，用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语音和/或数据。
还应理解，在本发明实施例中，无线接入点可用于与终端设备通信，该 网络设备可以是全球移动通讯(Global System of Mobile communication，简称为“GSM”)系统或码分多址(Code Division Multiple Access，简称为“CDMA”)中的基站(Base Transceiver Station，简称为“BTS”)，也可以是宽带码分多址(Wideband Code Division Multiple Access，简称为“WCDMA”)系统中的基站(NodeB，简称为“NB”)，还可以是长期演进(Long Term Evolution，简称为“LTE”)系统中的演进型基站(Evolutional Node B，简称为“eNB”或“eNodeB”)，或者为WLAN中的接入点(AP)，该无线接入点可以为中继站、WLAN AP、车载设备、可穿戴设备以及未来5G网络中的基站设备等。
图1示出了本发明实施例的无线通信中调整功率的方法100的示意性流程图。如图1所示，该方法100包括：
步骤110，无线接入点确定该无线接入点控制的第一小区的节能负载门限。
步骤120，无线接入点根据该节能负载门限控制第一小区的发射功率，该第一小区的发射功率包括数据信道的发射功率。
具体地，在步骤110中，一个无线无线接入点可以只有一个小区，也可以有多个小区，因此第一小区可以表示一个或多个上述无线接入点控制的小区，某个小区的负载可以用该小区内的用户设备所需的无线资源与该小区所有无线资源的比例表示。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
可选地，作为本发明一个实施例，无线接入点确定该无线接入点控制的第一小区的节能负载门限包括：无线接入点获取第一小区在当前周期内的负载信息；无线接入点根据第一小区在当前周期内的负载信息确定第一小区在下一周期内的节能负载门限。
具体地，第一小区发射功率的调整是基于第一小区的节能负载门限进行的调整，如果节能负载门限值设置的过高，会影响用户设备的接入，而节能负载门限值设置的过低，将会影响节能的效果。因此需要根据用户的业务分布来设置节能负载门限，即基于小区的负载情况设置节能负载门限。应理解， 小区负载的定义为服务用户设备所需的无线资源与所有无线资源之间的比例。
应理解，无线接入点获取第一小区负载信息的当前周期或下一周期的长度可以根据该第一小区的负载变化情况确定，第一小区的负载信息可以是第一小区在该周期内的平均负载，本发明不限于此。
还应理解，无线接入点获取第一小区负载信息的当前周期或下一周期的长度可以根据该第一小区的负载变化情况确定，例如可以将当前周期或下一周期设置为小区负载变化周期，上述下一周期是指在当前周期之后的一段时长，其长度可以跟当前周期相同也可以不相同，第一小区的负载信息可以是第一小区在该周期内的平均负载，本发明不限于此。具体而言，第一小区在下一周期的节能负载门限可以根据当前周期的负载门限进行确定，从而能够根据系统负载的动态变化，进行与之对应的小时间粒度的节能控制，进一步地实现分布式高效控制。
可选地，作为本发明一个实施例，无线接入点根据第一小区在当前周期内的负载信息确定第一小区在下一周期内的节能负载门限包括：无线接入点获取第二小区在当前周期内的负载信息，并确定第一小区和第二小区在当前周期的负载均值；无线接入点获取网络负载均衡目标值；无线接入点根据当前周期的负载均值和网络负载均衡目标值确定第一小区的节能负载门限。
具体地，第二小区是指整个网络中的除了第一小区之外的一个或多个小区，例如，第二小区可以是上述无线接入点的邻居接入点所控制的小区，本发明不限于此。无线接入点可以根据第一小区和第二小区在当前周期的负载信息确定在当前周期的负载均值。
具体地，无线接入点可以根据运营商策略或无线接入点的接入控制门限获取网络负载均衡目标值。
具体地，无线接入点根据当前周期的负载均值和网络负载均衡目标值确定第一小区的节能负载门限，可以根据公式(1)计算每个小区的节能负载门限值，公式(1)如下：
ρthr＝αρavg+(1-α)ρtar   (1)
其中，α为平滑系数，例如，可以设为0.5，ρthr为小区的节能负载门限，ρavg为网络负载均衡的目标值。
应理解，无线接入点可以设置第一小区的节能负载门限，也可以将该第 一小区的节能负载门限发送给网络中的其它无线接入点，以便于其它无线接入点根据该节能负载门限进行设置，从而能够根据该节能负载门限进行小区发射功率的控制。
可选地，作为本发明一个实施例，无线接入点根据第一小区在当前周期内的负载信息确定第一小区在下一周期内的节能负载门限包括：无线接入点向控制器上报第一小区在当前周期内的负载信息，第一小区在当前周期的负载信息被用于控制器确定第一小区在下一周期内的节能负载门限；接收控制器发送的第一小区在下一周期内的节能负载门限。
应理解，该控制器可以位于某个无线接入点，也可以独立于任何一个无线接入点之外作为一个独立的网络设备。
可选地，该控制器可以统一配置各个无线接入点的节能负载门限值，也就是说可以统一配置各个小区的节能负载门限值，具体步骤如下：控制器获取第一周期内所有小区的负载的均衡值；控制器获取网络负载均衡的目标值，该目标值可以基于运营商策略得到，也可以基于无线接入点的接入控制门限来设置，本发明不限于此；控制器根据负载均衡值和负载均衡目标值的平滑平均值确定为每个无线接入点的节能负载门限，并该将节能负载门限发送给各个无线接入点，以便于各个无线接入点根据该节能负载进行统一配置。
具体地，控制器根据各个小区当前周期的负载均值和网络负载均衡目标值确定节能负载门限，可以根据公式(1)计算该节能负载门限值，公式(1)如下：
ρthr＝αρavg+(1-α)ρtar   (1)
其中，α为平滑系数，例如，可以设为0.5，ρthr为小区的节能负载门限，ρavg为网络负载均衡的目标值。
可选地，作为本发明一个实施例，无线接入点根据第一小区在当前周期内的负载信息确定第一小区在下一周期内的节能负载门限包括：无线接入点根据第一小区在上一周期内的负载信息以及第一小区在当前周期的负载信息，确定第一小区的当前负载变化量；无线接入点获取网络负载均衡目标值；无线接入点根据第一小区的负载变化量和负载均衡目标值确定所述第一小区的节能负载门限。
具体地，无线接入点可以单独配置第一小区的节能负载门限，具体地， 例如单独配置第一小区的节能负载门限时，具体步骤如下：统计第一小区第一周期内负载和负载变化趋势；获取全网负载均衡的目标值，具体获取全网负载均衡的目标值的方式可以为通过网络管理系统获取，或通过控制器获取或查表获取。负载小于全网负载均衡的目标值的无线接入点，根据公式(2)确定节能负载门限值，公式(2)如下：
ρthr,i＝ρtar-ρtarsign(Δρi)Δρtar   (2)
Δρtar为系统预设的门限，可以设为10％。sign(Δρi)为小区i的负载变化的趋势，当负载变小时，取值为-1，变大时取值为+1，否则取值为0。当小区的负载变小时，节能负载门限在全网负载均衡的目标值之上，幅度为预设门限；反之，节能负载门限在全网负载均衡的目标值之下，幅度为预设门限。
可选地，作为本发明一个实施例，无线接入点根据节能负载门限，控制小区的发射功率包括：无线接入点确定第一小区的当前负载；若第一小区的当前负载小于节能负载门限，无线接入点根据第一小区当前的发射功率，确定第一小区的发射功率的降低幅度；无线接入点根据第一小区的发射功率的降低幅度，执行第一小区的发射功率的降低操作。
具体地，无线接入点可以根据实际情况选择不同时刻测量第一小区当前的负载情况，若第一小区在第一时刻测得的当前负载小于节能负载门限时，则该无线接入点可以根据第一小区的当前发射功率，确定第一小区的发射功率的降低幅度，具体地，可以根据公式(3)确定功率调整的幅度，公式(3)如下所示：
Figure PCTCN2015076915-appb-000001
其中，pn,i为第i个小区当前的发射功率，ρn,i和ρthr,i分别为第i个小区当前的测量负载和节能负载门限。
可选地，作为本发明一个实施例，无线接入点根据第一小区的发射功率的降低幅度，执行第一小区的发射功率的降低操作包括：若第一小区当前的发射功率与所述第一小区的发射功率的降低幅度之差大于功率最低门限值，将第一小区的发射功率更新为第一小区当前的发射功率与所述降低幅度之差。
可选地，作为本发明一个实施例，无线接入点根据第一小区的发射功率的降低幅度，执行第一小区的发射功率的降低操作，包括：无线接入点根据第一小区的发射功率的降低幅度以及功率门限值，执行第一小区的发射功率 的降低操作。
可选地，作为本发明一个实施例，若第一小区当前的发射功率与第一小区的降低幅度的之差大于功率门限值时，无线接入点降低当前发射功率，否则，不降低发射功率。
应理解，无线接入点继续测量第二时刻第一小区的当前负载，当第一小区在第二时刻的当前负载小于节能负载门限时，继续根据第一小区的发射功率的降低幅度，执行第一小区当前的发射功率的降低操作，其中，第二时刻发生在第一时刻之后。
应理解，当第一小区的当前发射功率与第一小区的发射功率的降低幅度之和大于功率最低门限值时，才执行第一小区的发射功率的降低操作。
具体地，可以根据公式(4)确定调整后的发射功率，公式(4)如下式所示：
pn+1,i＝Δpn+1,i+pn,i   (4)
本发明实施例提供的方法可以动态调整发射功率，能够适应负载的动态变化，低负载的小区的发射功率降低后，能够降低能耗，同时减小对其它小区或无线接入点的干扰，同时能够降低其它高负载的无线接入点的负载，全网负载趋于均衡。
可选地，作为本发明一个实施例，上述第一小区的发射功率还包括控制信道的发射功率。
具体地，当控制信道和数据信道分开的情况下，仅仅调整数据信道的发射功率不会对控制信道有影响，因此不会改变用户设备与各个小区之间的关联关系；当对于数据信道和控制信道相统一的情况下，例如无线局域网中，调整数据信道的功率同时也是对控制信道的调整，也就是说本发明实施例还用于对控制信道发射功率节能的情况。
可选地，作为本发明一个实施例，上述方法还包括：无线接入点将根据第一小区的发射功率的降低幅度，确定第一小区的偏移参数；向用户设备发送小区的偏移参数，以用于用户设备根据该偏移参数进行小区重选操作。
具体地，可以根据公式(5)确定第一小区的偏移量，公式(5)如下式所示：
Offsetn+1,i＝-Δpn+1,i   (5)
其中，Offsetn+1,i为本次调整后的小区偏移量，Δpn+1,i为无线接入点i当前的功率降低幅度。
本发明实施例提供的方法可以把小区偏移参数发送给用户设备，以使得用户设备保持同样的用户关联，减少没有必要的切换。
可选地，作为本发明一个实施例，当用户设备收到无线接入点发送的小区偏移参数时，需要根据小区偏移参数进行小区重选操作。
具体地，用户设备在小区的选择、重选或驻留时，通常选择接收信道强度最大的小区。当服务小区的控制信道功率调整时，在该小区内的用户设备将根据收到的小区偏移参数进行如下的调整，如公式(6)所示：
Figure PCTCN2015076915-appb-000002
其中，RSRP为参考信号接收强度(英文：Reference Signal Receiving Power，简写：RSRP)，也就是说用户设备将选取参考信号接收强度与小区偏移参数的和最大的小区为服务小区。
具体地，用户设备在进行切换决策时，也依赖于接收到的服务小区和邻区的信号的变化，这时也需要在考虑小区偏移参数，本发明不限于此。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
图2是本发明实施例提供的无线通信中调整功率的方法的示意性流程图。如图2所示，该方法包括：
步骤210，基于用户业务的分布统计，确定每个无线接入点的节能负载门限。
步骤220，当前负载低于节能负载门限的无线接入点，调整无线接入点的发射功率。
步骤230，当前负载低于节能负载门限的无线接入点，根据无线接入点的发射功率确定小区偏移参数，并将该偏移参数发送给用户设备。
步骤240，用户设备基于该小区的偏移参数进行小区的选择、驻留或者切换。
在步骤210中，每个无线接入点可以单独配置节能负载门限，也可以由 某个无线接入点或者控制器进行统一配置，本发明不限于此。
具体地，由控制器统一设置各无线接入点的节能负载门限的步骤如下：
1)每个无线接入点周期统计其负载，并向控制器上报；
2)控制器计算所有无线接入点的负载的均值ρavg；
3)控制器获取网络负载均衡的目标值ρtar，该目标值可以基于运营商的策略，也可以基于无线接入点的接入控制门限来设置；
4)控制器确定统计负载均值和负载均衡目标值的平滑平均值为每个无线接入点的节能负载门限：
ρthr＝αρavg+(1-α)ρtar
其中，α为平滑系数，可以设为0.5，ρthr为无线接入点的节能负载门限，在该控制器下的所有无线接入点统一设置。
具体地，由各无线接入点单独配置节能负载门限的步骤如下：
1)每个无线接入点周期统计其负载和负载变化趋势：
Δρi＝ρcur,i-ρprv,i
其中，ρcur,i和ρprv,i分别为无线接入点i当前的负载和上次统计的负载；
2)获取全网负载均衡的目标值ρtar；
3)负载小于全网负载均衡的目标值的无线接入点，确定其节能负载门限：
ρthr,i＝ρtar-ρtarsign(Δρi)Δρtar
其中，Δρtar为系统预设的门限，可以设为10％。sign(Δρi)为无线接入点i的负载变化的趋势，当负载变小时，取值为-1，变大时取值为+1，否则取值为0。当无线接入点的负载变小时，节能负载门限在全网负载均衡的目标值之上，幅度为预设门限；反之，节能负载门限在全网负载均衡的目标值之下，幅度为预设门限。
在步骤220，具体地，每个无线接入点调整发射功率的步骤如下：
1)每个无线接入点测量其负载；
2)如果测量负载小于节能负载门限，则继续参与功率调整，否则不再调整；
3)确定功率调整的幅度；
4)基于幅度进行功率调整，其中，若调整后的功率大于功率最低门限，并且测量负载小于节能负载门限，则继续调整，否则不再调整；
功率最低门限是为了保证一定的网络覆盖和服务质量(英文：Quality of Service简写：QoS)要求，在密集网场景下，最低门限可以设置很小；
5)无线接入点把新的小区偏移参数发给用户，以保持同样的用户关联，减少没必要的切换。
在步骤240中，当用户收到无线接入点发送的小区偏移参数时，需要及时应用。一般来说，涉及到功率域的操作，如小区重选，切换决策等，都需要做相应的调整，具体而言，用户可以进行以下操作：
1)小区重选
用户在小区选择/重选/驻留时，通常选择接收信号强度最大的小区。当服务小区的导频功率调整时，在该小区的用户会收到小区偏移参数，这时，小区选择如下：
Figure PCTCN2015076915-appb-000003
2)切换决策
切换决策也是涉及功率域的操作，依赖于接收到的服务小区和邻区的信号的变化，这时同样需要加上小区偏移量。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
图3是本发明实施例提供的密集无线接入网节能的方法的示意性流程图。该方法300可以由无线接入点设备执行，如图3所示，该方法包括：
步骤301，测量当前负载。
步骤302，判断当前负载是否小于节能负载门限，如果当前负载不小于节能负载门限，则结束功率调整；如果当前负载小于节能负载门限，则继续参与发射功率的调整。
步骤303，确定功率调整的幅度。
步骤304，基于功率调整幅度进行功率调整。
步骤305，判断调整后的发射功率是否大于最低门限功率。如果调整后的发射功率不高于最低门限功率则结束功率调整；如果调整后的发射功率高于最低门限功率，则进一步判断当前负载是否还小于节能负载门限，如果此时当前负载小于节能负载门限，则继续进行发射功率的调整。
在步骤303中，需要确定每次功率调整的幅度。具体地，可以根据公式(3)确定功率调整的幅度，公式(3)如下所示：
Figure PCTCN2015076915-appb-000004
其中，pn,i为第i个小区当前的发射功率，ρn,i和ρthr,i分别为第i个小区当前的测量负载和节能负载门限。
在步骤304中，基于功率调整幅度进行功率调整。具体地，可以根据公式(4)确定调整后的发射功率，公式(4)如下式所示：
pn+1,i＝Δpn+1,i+pn,i   (4)
本发明实施例提供的方法可以动态调整发射功率，能够适应负载的动态变化，低负载的小区的发射功率降低后，能够降低能耗，同时减小对其它小区或无线接入点的干扰，同时能够降低其它高负载的无线接入点的负载，全网负载趋于均衡。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
上文中结合图1至图3，详细描述了根据本发明实施例的密集无线接入网节能的方法，下面将结合图4至图5，描述根据本发明实施例的密集无线接入网节能的装置。
如图4所示，根据本发明实施例的无线接入点设备400包括：
第一确定单元410，用于确定无线接入点控制的第一小区的节能负载门限。
控制单元420，用于根据确定单元确定的节能负载门限，控制第一小区的发射功率，该第一小区的发射功率包括数据信道的发射功率。
具体地，一个无线无线接入点可以只有一个小区，也可以有多个小区，因此第一小区可以表示一个或多个上述无线接入点控制的小区，某个小区的负载可以用该小区内的用户设备所需的无线资源与该小区所有无线资源的比例表示。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现 各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
可选地，作为本发明一个实施例，无线接入点还包括获取单元，该获取单元用于：获取第一小区在当前周期内的负载信息；根据第一小区在当前周期内的负载信息获取第一小区在下一周期内的节能负载门限。
具体地，第一小区发射功率的调整是基于第一小区的节能负载门限进行的调整，如果节能负载门限值设置的过高，会影响用户设备的接入，而节能负载门限值设置的过低，将会影响节能的效果。因此需要根据用户的业务分布来设置节能负载门限，即基于小区的负载情况设置节能负载门限。应理解，小区负载的定义为服务用户设备所需的无线资源与所有无线资源之间的比例。
应理解，无线接入点获取第一小区负载信息的当前周期或下一周期的长度可以根据该第一小区的负载变化情况确定，第一小区的负载信息可以是第一小区在该周期内的平均负载，本发明不限于此。
还应理解，无线接入点获取第一小区负载信息的当前周期或下一周期的长度可以根据该第一小区的负载变化情况确定，例如可以将当前周期或下一周期设置为小区负载变化周期，上述下一周期是指在当前周期之后的一段时长，其长度可以跟当前周期相同也可以不相同，第一小区的负载信息可以是第一小区在该周期内的平均负载，本发明不限于此。具体而言，第一小区在下一周期的节能负载门限可以根据当前周期的负载门限进行确定，从而能够根据系统负载的动态变化，进行与之对应的小时间粒度的节能控制，进一步地实现分布式高效控制。
还应理解，该获取单元可以位于某一个无线接入点，也可以作为一个单独的设备统一控制网络中的每个无线接入点，本发明不限于此。
可选地，作为本发明一个实施例，获取单元具体用于：获取第二小区在当前周期内的负载信息，并确定第一小区和第二小区在当前周期的负载均值；获取网络负载均衡目标值；根据当前周期的负载均值和网络负载均衡目标值确定第一小区的节能负载门限。
具体地，第二小区是指整个网络中的除了第一小区之外的一个或多个小区，例如，第二小区可以是上述无线接入点的邻居接入点所控制的小区，本发明不限于此。无线接入点可以根据第一小区和第二小区在当前周期的负载 信息确定在当前周期的负载均值。
具体地，无线接入点可以根据运营商策略或无线接入点的接入控制门限获取网络负载均衡目标值。
具体地，无线接入点根据当前周期的负载均值和网络负载均衡目标值确定第一小区的节能负载门限，可以根据公式(1)计算每个小区的节能负载门限值，公式(1)如下：
ρthr＝αρavg+(1-α)ρtar   (1)
其中，α为平滑系数，例如，可以设为0.5，ρthr为小区的节能负载门限，ρavg为网络负载均衡的目标值。
应理解，无线接入点可以设置第一小区的节能负载门限，也可以将该第一小区的节能负载门限发送给网络中的其它无线接入点，以便于其它无线接入点根据该节能负载门限进行设置，从而能够根据该节能负载门限进行小区发射功率的控制。
可选地，作为本发明一个实施例，上述获取单元还包括：第一发送单元，第一发送单元用于向控制器上报第一小区在当前周期内的负载信息，第一小区在当前周期的负载信息被用于控制器确定第一小区在下一周期内的节能负载门限；接收单元，接收单元用于接收控制器发送的第一小区在下一周期内的节能负载门限。
应理解，该控制器可以位于某个无线接入点，也可以独立于任何一个无线接入点之外作为一个独立的网络设备。
可选地，该控制器可以统一配置各个无线接入点的节能负载门限值，也就是说可以统一配置各个小区的节能负载门限值，具体步骤如下：控制器获取第一周期内所有小区的负载的均衡值；控制器获取网络负载均衡的目标值，该目标值可以基于运营商策略得到，也可以基于无线接入点的接入控制门限来设置，本发明不限于此；控制器根据负载均衡值和负载均衡目标值的平滑平均值确定为每个无线接入点的节能负载门限，并该将节能负载门限发送给各个无线接入点，以便于各个无线接入点根据该节能负载进行统一配置。
具体地，控制器根据各个小区当前周期的负载均值和网络负载均衡目标值确定节能负载门限，可以根据公式(1)计算该节能负载门限值，公式(1)如下：
ρthr＝αρavg+(1-α)ρtar   (1)
其中，α为平滑系数，例如，可以设为0.5，ρthr为小区的节能负载门限，ρavg为网络负载均衡的目标值。
可选地，作为本发明一个实施例，获取单元具体用于：获取第一小区在上一周期内的负载信息以及第一小区在当前周期内的负载信息，并根据第一小区在上一周期内的负载信息以及第一小区在当前周期内的负载信息确定第一小区的当前负载变化量；获取网络负载均衡目标值；根据第一小区的负载变化量和负载均衡目标值确定第一小区的节能负载门限。
具体地，无线接入点可以单独配置第一小区的节能负载门限，具体地，例如单独配置第一小区的节能负载门限时，具体步骤如下：统计第一小区第一周期内负载和负载变化趋势；获取全网负载均衡的目标值，具体获取全网负载均衡的目标值的方式可以为通过网络管理系统获取，或通过控制器获取或查表获取。负载小于全网负载均衡的目标值的无线接入点，根据公式(2)确定节能负载门限值，公式(2)如下：
ρthr,i＝ρtar-ρtarsign(Δρi)Δρtar   (2)
Δρtar为系统预设的门限，可以设为10％。sign(Δρi)为小区i的负载变化的趋势，当负载变小时，取值为-1，变大时取值为+1，否则取值为0。当小区的负载变小时，节能负载门限在全网负载均衡的目标值之上，幅度为预设门限；反之，节能负载门限在全网负载均衡的目标值之下，幅度为预设门限。
可选地，作为本发明一个实施例，控制单元包括第二确定单元，该第二确定单元用于：确定小区的当前负载；在第一小区的当前负载小区节能负载门限时，根据第一小区当前的发射功率，确定第一小区的发射功率的降低幅度；控制单元具体用于：根据第一小区的发射功率的降低幅度，执行第一小区的发射功率的降低操作。
具体地，无线接入点可以根据实际情况测量第一小区当前的负载情况，若第一小区的当前负载小于节能负载门限时，则该无线接入点可以根据第一小区的当前发射功率，确定第一小区的发射功率的降低幅度，具体地，可以根据公式(3)确定功率调整的幅度，公式(3)如下所示：
Figure PCTCN2015076915-appb-000005
其中，pn,i为第i个小区当前的发射功率，ρn,i和ρthr,i分别为第i个小区当 前的测量负载和节能负载门限。
可选地，作为本发明一个实施例，控制单元具体用于：若第一小区当前的发射功率与第一小区的发射功率的降低幅度之差大于功率最低门限值，将第一小区的发射功率更新为第一小区当前的发射功率与降低幅度之差。
应理解，当第一小区的当前发射功率与第一小区的发射功率的降低幅度之和大于功率最低门限值时，才执行第一小区的发射功率的降低操作。
具体地，可以根据公式(4)确定调整后的发射功率，公式(4)如下式所示：
pn+1,i＝Δpn+1,i+pn,i   (4)
本发明实施例提供的方法可以动态调整发射功率，能够适应负载的动态变化，低负载的小区的发射功率降低后，能够降低能耗，同时减小对其它小区或无线接入点的干扰，同时能够降低其它高负载的无线接入点的负载，全网负载趋于均衡。
可选地，作为本发明一个实施例，上述第一小区的发射功率还包括控制信道的发射功率。
具体地，当控制信道和数据信道分开的情况下，仅仅调整数据信道的发射功率不会对控制信道有影响，因此不会改变用户设备与各个小区之间的关联关系；当对于数据信道和控制信道相统一的情况下，例如无线局域网中，调整数据信道的功率同时也是对控制信道的调整，也就是说本发明实施例还用于对控制信道发射功率节能的情况。
可选地，作为本发明一个实施例，该无线接入点还包括：第三确定单元，该第三确定单元用于根据第一小区的发射功率的降低幅度，确定第一小区的偏移参数；第二发送单元，第二发送单元用于发送小区的偏移参数，以用于用户设备根据偏移参数进行小区重选操作。
具体地，可以根据公式(5)确定第一小区的偏移量，公式(5)如下式所示：
Offsetn+1,i＝-Δpn+1,i   (5)
其中，Offsetn+1,i为本次调整后的小区偏移量，Δpn+1,i为无线接入点i当前的功率降低幅度。
本发明实施例提供的方法可以把小区偏移参数发送给用户设备，以使得用户设备保持同样的用户关联，减少没有必要的切换。
可选地，作为本发明一个实施例，当用户设备收到无线接入点发送的小区偏移参数时，需要根据小区偏移参数进行小区重选操作。
具体地，用户设备在小区的选择、重选或驻留时，通常选择接收信道强度最大的小区。当服务小区的控制信道功率调整时，在该小区内的用户设备将根据收到的小区偏移参数进行如下的调整，如公式(6)所示：
Figure PCTCN2015076915-appb-000006
其中，RSRP为参考信号接收强度(英文：Reference Signal Receiving Power，简写：RSRP)，也就是说用户设备将选取参考信号接收强度与小区偏移参数的和最大的小区为服务小区。
具体地，用户设备在进行切换决策时，也依赖于接收到的服务小区和邻区的信号的变化，这时也需要在考虑小区偏移参数，本发明不限于此。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
应理解，根据本发明实施例的无线接入点设备400可对应于执行本发明实施例中的无线通信中调整功率的方法100，并且无线接入点设备400中的各个单元的上述和其它操作和/或功能分别为了实现图1至图3中的各个方法的相应流程，为了简洁，在此不再赘述。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
如图5所示，本发明实施例还提供了一种无线接入点设备500，，该设备500包括处理器510、存储器520、总线系统530。其中，处理器510、存储器520和通过总线系统530相连，该存储器520用于存储指令，该处理器510用于执行该存储器520存储的指令。其中，处理器510用于：确定无线接入点控制的第一小区的节能负载门限；根据确定单元确定的节能负载门限，控制第一小区的发射功率，该第一小区的发射功率包括数据信道的发射功率。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现 各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
应理解，在本发明实施例中，该处理器510可以是中央处理单元(Central Processing Unit，简称为“CPU”)，该处理器510还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器520可以包括只读存储器和随机存取存储器，并向处理器510提供指令和数据。存储器520的一部分还可以包括非易失性随机存取存储器。例如，存储器520还可以存储设备类型的信息。
该总线系统530除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统530。
在实现过程中，上述方法的各步骤可以通过处理器510中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器520，处理器510读取存储器520中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
可选地，作为本发明一个实施例，处理器510可以调用存储器520中存储的程序代码执行以下操作：获取第一小区在当前周期内的负载信息；根据第一小区在当前周期内的负载信息获取第一小区在下一周期内的节能负载门限。
可选地，作为本发明一个实施例，处理器510可以调用存储器520中存储的程序代码执行以下操作：获取第二小区在当前周期内的负载信息，并确定第一小区和第二小区在当前周期的负载均值；获取网络负载均衡目标值；根据当前周期的负载均值和网络负载均衡目标值确定第一小区的节能负载门限。
可选地，作为本发明一个实施例，该设备500还包括：发射器540，该发射器510用于向控制器上报第一小区在当前周期内的负载信息，该负载信 息用于控制器根据第一小区在当前周期的负载信息确定第一小区在下一周期内的节能负载门限；接收器550，该接收器550用于接收控制器发送的第一小区在下一周期内的节能负载门限。
可选地，作为本发明一个实施例，处理器510可以调用存储器520中存储的程序代码执行以下操作：获取第一小区在上一周期内的负载信息以及第一小区在当前周期内的负载信息，并根据第一小区在上一周期内的负载信息以及第一小区在当前周期内的负载信息确定第一小区的当前负载变化量；获取网络负载均衡目标值；根据第一小区的负载变化量和负载均衡目标值确定第一小区的节能负载门限。
可选地，作为本发明一个实施例，处理器510可以调用存储器520中存储的程序代码执行以下操作：确定第一小区的当前负载；在第一小区的当前负载小区小于节能负载门限时，根据第一小区当前的发射功率，确定第一小区的发射功率的降低幅度；根据第一小区的发射功率的降低幅度，执行第一小区的发射功率的降低操作。
可选地，作为本发明一个实施例，处理器510可以调用存储器520中存储的程序代码执行以下操作：若第一小区当前的发射功率与第一小区的发射功率的降低幅度之差大于功率最低门限值，将第一小区的发射功率更新为第一小区当前的发射功率与所述降低幅度之差。
可选地，作为本发明一个实施例，第一小区的发射功率包括控制信道的发射功率。
可选地，作为本发明一个实施例，处理器510可以调用存储器520中存储的程序代码执行以下操作根据第一小区的发射功率的降低幅度，确定第一小区的偏移参数；该发射器540用于发送第一小区的偏移参数，以用于用户设备根据该偏移参数进行小区重选操作。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
应理解，根据本发明实施例的无线接入点设备500可对应于本发明实施例中的无线接入点200，并可以对应于执行根据本发明实施例的方法100中的相应主体，并且无线接入点设备500中的各个模块的上述和其它操作和/ 或功能分别为了实现图1至图4中的各个方法的相应流程，为了简洁，在此不再赘述。
基于上述技术方案，本发明实施例的无线通信中功率调整的方法和无线接入点，可以根据小区的节能负载门限，调整该小区的发射功率，从而实现各小区的发射功率的分布式控制，有利于降低整个接入网的功率消耗和各个网络设备之间的干扰。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (18)

  1. 一种无线通信中调整功率的方法，其特征在于，包括：
    无线接入点确定所述无线接入点控制的第一小区的节能负载门限；
    所述无线接入点根据所述节能负载门限控制所述第一小区的发射功率，所述第一小区的发射功率包括数据信道的发射功率。
  2. 根据权利要求1所述的方法，其特征在于，所述无线接入点确定所述无线接入点控制的第一小区的节能负载门限包括：
    所述无线接入点获取所述第一小区在当前周期内的负载信息；
    所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限。
  3. 根据权利要求2所述的方法，其特征在于，所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限包括：
    所述无线接入点获取第二小区在所述当前周期内的负载信息，并确定所述第一小区和所述第二小区在所述当前周期的负载均值；
    所述无线接入点获取网络负载均衡目标值；
    所述无线接入点根据所述当前周期的负载均值和所述网络负载均衡目标值确定所述第一小区的节能负载门限。
  4. 根据权利要求2所述的方法，其特征在于，所述无线接入点根据所述第一小区在当前周期内的负载信息确定所述第一小区在下一周期内的节能负载门限包括：
    所述无线接入点向控制器上报所述第一小区在当前周期内的负载信息，所述第一小区在当前周期的负载信息被所述控制器用于确定所述第一小区在下一周期内的节能负载门限；
    接收所述控制器发送的所述第一小区在下一周期内的节能负载门限。
  5. 根据权利2所述的方法，其特征在于，所述无线接入点根据所述第一小区在当前周期内的负载信息，确定所述第一小区在下一周期内的节能负载门限包括：
    所述无线接入点根据所述第一小区在上一周期内的负载信息以及所述第一小区在当前周期的负载信息，确定所述第一小区的当前负载变化量；
    所述无线接入点获取网络负载均衡目标值；
    所述无线接入点根据所述第一小区的负载变化量和所述负载均衡目标值确定所述第一小区的节能负载门限。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述无线接入点根据所述节能负载门限，控制所述第一小区的发射功率包括：
    所述无线接入点确定所述第一小区的当前负载；
    若所述第一小区的当前负载小于所述节能负载门限，所述无线接入点根据所述第一小区当前的发射功率，确定所述第一小区的发射功率的降低幅度；
    所述无线接入点根据所述第一小区的发射功率的降低幅度，执行所述第一小区的发射功率的降低操作。
  7. 根据权利要求6所述的方法，其特征在于，所述无线接入点根据所述第一小区的发射功率的降低幅度，执行所述第一小区的当前发射功率的降低操作包括：
    若所述第一小区当前的发射功率与所述第一小区的发射功率的降低幅度之差大于功率最低门限值，将所述第一小区的发射功率更新为所述第一小区当前的发射功率与所述降低幅度之差。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述第一小区的发射功率包括控制信道的发射功率。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述无线接入点将所述第一小区的发射功率的降低幅度确定为所述第一小区的偏移参数；
    向用户设备发送所述小区的偏移参数，以用于用户设备根据所述偏移参数进行小区重选操作。
  10. 一种无线接入点设备，其特征在于，包括：
    第一确定单元，所述第一确定单元用于确定所述无线接入点控制的第一小区的节能负载门限；
    控制单元，所述控制单元用于根据所述确定单元确定的节能负载门限，控制所述第一小区的发射功率，所述第一小区的发射功率包括数据信道的发射功率。
  11. 根据权利要求10所述的接入点设备，其特征在于，所述无线接入点还包括获取单元，所述获取单元用于：
    获取所述第一小区在当前周期内的负载信息；
    根据所述第一小区在当前周期内的负载信息获取所述第一小区在下一周期内的节能负载门限。
  12. 根据权利要求11所述的接入点设备，其特征在于，所述获取单元具体用于：
    获取第二小区在所述当前周期内的负载信息，并确定所述第一小区和所述第二小区在所述当前周期的负载均值；
    获取网络负载均衡目标值；
    根据所述当前周期的负载均值和所述网络负载均衡目标值确定所述第一小区的节能负载门限。
  13. 根据权利要求11所述的接入点设备，其特征在于，所述获取单元还包括：
    第一发送单元，所述第一发送单元用于向控制器上报所述第一小区在当前周期内的负载信息，所述第一小区在当前周期的负载信息被用于所述控制器确定所述第一小区在下一周期内的节能负载门限；
    接收单元，所述接收单元用于接收所述控制器发送的所述第一小区在下一周期内的节能负载门限。
  14. 根据权利要求11所述的接入点设备，其特征在于，所述获取单元具体用于：
    获取所述第一小区在上一周期内的负载信息以及所述第一小区在当前周期内的负载信息，并根据所述第一小区在上一周期内的负载信息以及所述第一小区在当前周期内的负载信息确定所述第一小区的当前负载变化量；
    获取网络负载均衡目标值；
    根据所述第一小区的负载变化量和所述负载均衡目标值确定所述第一小区的节能负载门限。
  15. 根据权利要求10至14中任一项所述的方法，其特征在于，所述控制单元包括第二确定单元，所述第二确定单元用于：确定所述第一小区的当前负载；所述第二确定单元用于在所述第一小区的当前负载低于所述节能负载门限时，根据所述第一小区当前的发射功率，确定所述第一小区的发射功率的降低幅度；
    所述控制单元具体用于：根据所述第一小区的发射功率的降低幅度，执 行所述第一小区的发射功率的降低操作。
  16. 根据权利要求15所述的无线接入点，其特征在于，所述控制单元具体用于：
    若所述第一小区当前的发射功率与所述第一小区的发射功率的降低幅度之差大于功率最低门限值，将所述第一小区的发射功率更新为所述第一小区当前的发射功率与所述降低幅度之差。
  17. 根据权利要求10至16中任一项所述的无线接入点，其特征在于，所述第一小区的发射功率包括控制信道的发射功率。
  18. 根据权利要求17所述的无线接入点，其特征在于，所述无线接入点还包括：
    第三确定单元，所述第三确定单元用于将所述第一小区的发射功率的降低幅度确定为所述第一小区的偏移参数；
    第二发送单元，所述第二发送单元用于发送所述小区的偏移参数，以用于用户设备根据所述偏移参数进行小区重选操作。
PCT/CN2015/076915 2015-04-17 2015-04-17 无线通信中调整功率的方法和无线接入点 WO2016165141A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/076915 WO2016165141A1 (zh) 2015-04-17 2015-04-17 无线通信中调整功率的方法和无线接入点
CN201580078900.0A CN107925961B (zh) 2015-04-17 2015-04-17 无线通信中调整功率的方法和无线接入点

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/076915 WO2016165141A1 (zh) 2015-04-17 2015-04-17 无线通信中调整功率的方法和无线接入点

Publications (1)

Publication Number Publication Date
WO2016165141A1 true WO2016165141A1 (zh) 2016-10-20

Family

ID=57125666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/076915 WO2016165141A1 (zh) 2015-04-17 2015-04-17 无线通信中调整功率的方法和无线接入点

Country Status (2)

Country Link
CN (1) CN107925961B (zh)
WO (1) WO2016165141A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112153654B (zh) * 2019-06-26 2022-03-25 大唐移动通信设备有限公司 一种小区的资源控制方法及装置
CN114980282B (zh) * 2021-02-24 2024-04-09 上海华为技术有限公司 一种功率调整方法以及网络管理服务器
CN117528725A (zh) * 2022-07-30 2024-02-06 上海华为技术有限公司 一种节能方法以及相关装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050152320A1 (en) * 2004-01-08 2005-07-14 Interdigital Technology Corporation Wireless communication method and apparatus for balancing the loads of access points by controlling access point transmission power levels
CN101925167A (zh) * 2009-06-09 2010-12-22 中兴通讯股份有限公司 一种无线局域网接入点设备的功率控制方法和装置
US20130329619A1 (en) * 2008-07-03 2013-12-12 Cisco Technology, Inc. Multiple density configurations and algorithms for intelligent power savings infrastructure in wireless lans
US8611268B1 (en) * 2011-04-15 2013-12-17 Qualcomm Incorporated Access point power save mechanism for wireless communication systems
CN103517389A (zh) * 2013-10-24 2014-01-15 北京交通大学 一种wlan设备自适应节能方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100411491C (zh) * 2006-03-29 2008-08-13 华为技术有限公司 一种负载控制方法
US8488562B2 (en) * 2009-12-18 2013-07-16 Qualcomm Incorporated Transmission power control in multi-hop networks
CN103068019B (zh) * 2013-01-08 2015-12-09 杭州华三通信技术有限公司 一种无线局域网络节能的方法及装置
CN104023357B (zh) * 2014-05-06 2017-11-14 京信通信系统（中国）有限公司 集中式无线局域网的负载均衡方法及接入控制器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050152320A1 (en) * 2004-01-08 2005-07-14 Interdigital Technology Corporation Wireless communication method and apparatus for balancing the loads of access points by controlling access point transmission power levels
US20130329619A1 (en) * 2008-07-03 2013-12-12 Cisco Technology, Inc. Multiple density configurations and algorithms for intelligent power savings infrastructure in wireless lans
CN101925167A (zh) * 2009-06-09 2010-12-22 中兴通讯股份有限公司 一种无线局域网接入点设备的功率控制方法和装置
US8611268B1 (en) * 2011-04-15 2013-12-17 Qualcomm Incorporated Access point power save mechanism for wireless communication systems
CN103517389A (zh) * 2013-10-24 2014-01-15 北京交通大学 一种wlan设备自适应节能方法

Also Published As

Publication number Publication date
CN107925961B (zh) 2020-09-29
CN107925961A (zh) 2018-04-17

Similar Documents

Publication Publication Date Title
US10979960B2 (en) Communication method, network device, and terminal device supporting multimode communication links
US11317336B2 (en) Communication method, communications apparatus, and system
US20150304889A1 (en) Load balancing method and network control node
EP3072333B1 (en) Dynamically adjusting roaming parameters
US11882494B2 (en) Mobile devices, network nodes and methods of operating the same
US8737222B2 (en) Method and apparatus for providing increased small cell resource utilization
EP3340698B1 (en) User device, base station, communication method, and instruction method
US11751236B2 (en) BWP allocation method and apparatus
WO2012103746A1 (zh) 一种移动通信网络的接入方法、装置和系统
WO2018153152A1 (zh) 一种上行功率控制方法及基站
US20180192345A1 (en) Backhaul aware cell range optimization of small cells in heterogenous networks
WO2020211094A1 (zh) 一种测量处理方法、网络设备、终端设备
US20160242090A1 (en) Service handover method, network device and user equipment
WO2016033736A1 (zh) 无线网络中小区选择的方法、基站和用户设备
WO2018126448A1 (zh) 基于动态时分双工的传输装置、方法以及通信系统
WO2020097813A1 (zh) 一种移动性测量的方法、装置和系统
WO2016165141A1 (zh) 无线通信中调整功率的方法和无线接入点
WO2016183776A1 (zh) 通信方法和设备
CN109982395B (zh) 一种配置切换参数的方法及装置
WO2017177662A1 (zh) 基站底噪值获取方法和装置
EP2747472A1 (en) Wireless communication system and method for controlling communication
WO2013056624A1 (zh) 多频网络中功率降额的方法和装置
WO2020042959A1 (zh) 一种ui显示方法、装置、终端设备和存储介质
US10021639B2 (en) Network node and method performed thereby for controlling operation of a low power node
WO2015013968A1 (zh) 一种下行发射功率的调整方法及相关装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15888845

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15888845

Country of ref document: EP

Kind code of ref document: A1