WO2014198088A1 - 减少邻频段网络间共设备互扰的方法及装置 - Google Patents

减少邻频段网络间共设备互扰的方法及装置 Download PDF

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Publication number
WO2014198088A1
WO2014198088A1 PCT/CN2013/083256 CN2013083256W WO2014198088A1 WO 2014198088 A1 WO2014198088 A1 WO 2014198088A1 CN 2013083256 W CN2013083256 W CN 2013083256W WO 2014198088 A1 WO2014198088 A1 WO 2014198088A1
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Prior art keywords
signal
wlan
lte
mutual interference
working channel
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PCT/CN2013/083256
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English (en)
French (fr)
Inventor
杨皎皎
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/370,002 priority Critical patent/US20150195844A1/en
Priority to EP13882623.5A priority patent/EP2852216B1/en
Publication of WO2014198088A1 publication Critical patent/WO2014198088A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • the present invention relates to the field of wireless communication, and in particular to a method and apparatus for reducing mutual interference between adjacent bands of networks. Background technique
  • ACLR adjacent channel leakage ratio
  • AdjacentChannelLeakageRatio AdjacentChannelLeakageRatio
  • the LTE system operating in the frequency band adjacent to the WLAN working band is monitored; the channel quality information (CQI, Channel Quality Indicator) reported by the user equipment (UE, User Equipment) farthest from the interference source and
  • CQI Channel Quality Indicator
  • UE User Equipment
  • the interference avoidance strategy is executed when the difference between the CQIs reported by the UE closest to the interference source is greater than a predefined threshold.
  • the LTE base station needs to detect the signal quality reported by the terminal, and re-allocate the sub-band occupied by the UE according to the detection result. Due to the introduction of the base station, the real implementation is difficult and the versatility is poor.
  • the embodiment of the invention provides a method and a device for reducing mutual interference between devices in a neighboring frequency band, so as to solve the problem that the prior art does not have a simple and universal method for solving mutual interference between adjacent bands of networks. .
  • an embodiment of the present invention provides a method for reducing mutual interference between devices in a neighboring frequency band network, including: monitoring signal quality of a first signal; wherein the signal quality is lower than a preset quality In the case of the threshold value, the working state of the second signal is adjusted to reduce the mutual interference of the device, wherein the first signal and the second signal are adjacent frequency bands and signals that interfere with each other.
  • the first signal includes at least one of the following: an LTE signal, a WIMax signal; and the second signal includes at least: a WLAN signal.
  • the method includes: monitoring a signal quality of the LTE signal; where the signal quality is lower than a preset quality threshold In this case, adjust the WLAN working state to reduce device mutual interference.
  • monitoring the signal quality of the LTE signal includes: determining whether the signal to interference power ratio (SINR, Signal to Interference plus Noise Ratio) of the LTE signal is inconsistent Presetting the SINR threshold, and/or determining whether the reference signal received power (RSRP, Reference Signal Receiving Power) of the LTE signal is lower than a preset RSRP threshold.
  • SINR signal to interference power ratio
  • RSRP Reference Signal Receiving Power
  • adjusting the working state of the WLAN includes: acquiring a working channel of the WLAN in the current state, and reallocating the working channel of the WLAN according to the signal quality, where the working channel with the least interference with the working channel of the LTE signal is selected data transmission.
  • the working frequency is LTE BAND40 (2300-2400MHz), and the working channel is the highest channel 2380MHZ (bandwidth 20MHz), then WIFI
  • the working channel (2400-2483MHz) can select 13 channels (intermediate frequency point 2472MHZ, 20MHz bandwidth), which can ensure the maximum working channel distance between the two, and the minimum mutual interference. Under this adjustment, it can usually ensure that it is in WIFI interference.
  • the SINR of the LTE working channel is increased by 2-4 dB.
  • adjusting the WLAN working state includes: acquiring a WLAN transmit power and an accessed WIFI user state, and adjusting the WLAN transmit power according to the WIFI user state to reduce mutual interference between the LTE and WLAN bands, where The WIFI user status is used to indicate that the device used by the WIFI user can establish a limit parameter value of the connection.
  • adjusting the working state of the WLAN includes: acquiring a working channel of the WLAN in the current state, and reallocating the working channel of the WLAN according to the signal quality, where the working channel with the least interference with the working channel of the LTE signal is selected Data transmission; if the current working channel of the WLAN has been adjusted to the highest or lowest channel, but the signal quality is still lower than the preset quality threshold, obtaining the transmit power of the WLAN and the WIFI user state of the access, The WLAN transmit power is adjusted according to the WIFI user state to reduce mutual interference between the LTE and the WLAN frequency band, where the WIFI user state is used to indicate that the device used by the WIFI user can establish a limit parameter value of the connection.
  • the WIFI power control command may be used to increase the WIFI transmit power from the original maximum value (usually about 13 dBm). Adjust to 50% transmit power (About lOdBm), so that the interference of WIFI out-of-band spurious power falling in the LTE frequency band is effectively reduced, so as to reduce WIFI to LTE.
  • the embodiment of the present invention further provides a device for reducing mutual interference between devices in a neighboring band network, including:
  • the monitoring and determining module is configured to monitor the signal quality of the first signal; and the adjusting module is configured to adjust the working state of the second signal to reduce the mutual interference of the device when the signal quality is lower than the preset quality threshold
  • the first signal and the second signal are signals in the same frequency band and interfere with each other.
  • the monitoring and determining module is implemented by using a central processing unit (CPU), a digital signal processor (DSP), or a Field-Programmable Gate Array (FPGA).
  • CPU central processing unit
  • DSP digital signal processor
  • FPGA Field-Programmable Gate Array
  • the monitoring determination module is configured to monitor the signal quality of the LTE signal when the first signal is an LTE signal; and the adjusting module is configured to: the second signal is a WLAN signal, and When the signal quality is lower than the preset quality threshold, adjust the WLAN working state to reduce device mutual interference.
  • the monitoring and determining module is further configured to determine whether a signal to interference plus noise ratio SINR of the LTE signal is lower than a preset SINR threshold, and/or determine whether the reference signal received power RSRP of the LTE signal is Below the preset RSRP threshold.
  • the adjustment module includes: an obtaining unit configured to acquire a working channel of the WLAN in a current state; and an adjusting unit configured to reallocate the working channel of the WLAN according to the signal quality, where the LTE signal is selected
  • the working channel has the least interference working channel for data transmission.
  • the adjustment module is implemented by a central processing unit (CPU), a digital signal processor (DSP), or a Field-Programmable Gate Array (FPGA).
  • the adjusting module includes: an acquiring unit configured to acquire a transmit power of the WLAN and an accessed WIFI user state; and an adjusting unit configured to adjust the WLAN transmit power according to the WIFI user state to reduce LTE and The mutual interference between the WLAN bands, wherein the WIFI user status is used to indicate that the device used by the WIFI user can establish a limit parameter value of the connection.
  • the adjustment module includes: an obtaining unit configured to acquire a working channel of the WLAN in a current state, and/or obtain a transmit power of the WLAN and a WIFI user state of the access; and an adjusting unit configured to perform according to the signal quality Redistributing the working channel of the WLAN, wherein the working channel with the least interference with the working channel of the LTE signal is selected for data transmission; and the working channel of the current WLAN is adjusted to the highest or lowest channel, but If the signal quality is still lower than the preset quality threshold, the WLAN transmit power is adjusted according to the WIFI user state to reduce mutual interference between the LTE and WLAN bands, where the WIFI user The status is used to indicate that the device used by the WIFI user is able to establish a limit parameter value for the connection.
  • the signal quality of the first signal is monitored.
  • the signal quality does not reach the preset quality threshold
  • the mutual interference between the adjacent frequency bands is reduced by reasonably adjusting the working state of the second signal.
  • the method is simple. It is easy to implement, and can effectively reduce the impact of mutual interference after use. It solves the problem that the prior art does not have a simple and universal method to solve the mutual interference between devices in the adjacent band network.
  • FIG. 1 is a flowchart of a method for reducing mutual interference between devices in a neighboring band network according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of an apparatus for reducing mutual interference between devices in a neighboring band network according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing a preferred structure of a device for reducing mutual interference between devices in a neighboring band network according to an embodiment of the present invention
  • FIG. 4 is a system block diagram of a device for reducing inter-device interference between LTE and WLAN in a preferred embodiment 2 of the present invention
  • FIG. 5 is a flow chart showing the operation of reducing a mutual interference device between LTE and WLAN devices in a preferred embodiment 2 of the present invention
  • FIG. 6 is a schematic diagram of a state of an emission spectrum after using a method for reducing inter-device interference between LTE and WLAN in a preferred embodiment 2 of the present invention
  • FIG. 7 is a schematic diagram of another state of an emission spectrum after a method for reducing inter-device interference between LTE and WLAN is used in another preferred embodiment 2 of the present invention. detailed description
  • the present invention provides a method and apparatus for reducing mutual interference between networks in a neighboring band network, The invention will be further described in detail in conjunction with the drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • the embodiment of the present invention provides a method for reducing mutual interference between devices in a network in the same frequency band.
  • the process of the method is as shown in FIG. 1 and includes steps S102 to S104.
  • Step S102 monitoring signal quality of the first signal
  • Step S104 Adjust the working state of the second signal to reduce the mutual interference of the device, where the signal quality is lower than the preset quality threshold, where the first signal and the second signal are adjacent frequency bands and mutually interfered signals.
  • the signal quality of the first signal when the signal quality of the first signal is already lower than a preset quality threshold, it indicates that the signal of the first signal is seriously interfered by the second signal, and at this time, the work of adjusting the second signal is performed.
  • the state reduces interference with the first signal, for example, adjusting the working channel of the second signal to keep the working channel away from the operating band of the first signal, thereby reducing interference with the first signal.
  • the types of the first signal and the second signal are very wide. The two types of signals that are most easily seen by the common device are WLAN and LTE signals. Of course, there are other signals with similar conditions, such as WIMax signals and WLAN. . The following is to reduce the mutual interference of devices in the network between adjacent bands.
  • the signal quality of the LTE signal is monitored.
  • the WLAN working state is adjusted to reduce the mutual interference of the device.
  • the embodiment of the present invention monitors the signal quality of the LTE.
  • the WLAN and the WLAN device interference are reduced by reasonably adjusting the WLAN working state.
  • the method is simple and easy to use. After that, the impact of the mutual interference can be effectively reduced, and there is no simple and universal method in the prior art to solve the problem of mutual interference between the LTE and the WLAN.
  • the signal quality of the LTE signal may be a value or a combination of any one of the SINR and the RSRP.
  • the combination is used to monitor whether the SINR of the LTE signal is lower than a preset SINR threshold.
  • the obtained information may be a working channel of the WLAN, and/or a transmit power of the WLAN and a WIFI user state of the access.
  • the working channel of the WLAN may be reallocated according to the signal quality, wherein the working channel with the least interference with the working channel of the LTE signal is selected for data transmission.
  • the WLAN transmit power can be adjusted according to the WIFI user state to reduce the mutual interference between the LTE and the WLAN frequency band.
  • the WLAN transmit power of the terminal may be adjusted according to the WIFI user state. Reduce mutual interference between LTE and WLAN bands.
  • the embodiment of the present invention further provides a device for reducing mutual interference between devices in a neighboring band network, and the structure thereof is as shown in FIG. 2, including: a monitoring and determining module 10 configured to monitor a signal quality of the first signal; 20, coupled with the monitoring and determining module 10, configured to adjust an operating state of the second signal to reduce device mutual interference if the signal quality is lower than a preset quality threshold, where the first signal and the The second signal is a signal in the adjacent frequency band and mutual interference.
  • the monitoring determining module 10 is configured to monitor a signal quality of the LTE signal; and the adjusting module 20 is configured to have a signal quality lower than a preset quality. In the case of thresholds, adjust the WLAN operating state to reduce device mutual interference.
  • the monitoring and determining module 10 may be configured to determine whether the SINR of the LTE signal is lower than a preset SINR threshold, and/or determine whether the RSRP of the LTE signal is lower than a preset RSRP threshold.
  • the adjustment module 20 further includes: an acquisition unit 202, and an adjustment unit 204 coupled to the acquisition unit 202.
  • the obtaining unit 202 can obtain a variety of information, and the adjusting unit 204 can implement different functions according to different information acquired by the obtaining unit 202.
  • the obtaining unit 202 can obtain the working channel of the WLAN in the current state, and/or the transmit power of the WLAN and the WIFI user state of the access.
  • the adjusting unit 204 is configured to reallocate the working channel of the WLAN according to the signal quality. Wherein, the working channel with the least interference with the working channel of the LTE signal is selected for data transmission.
  • the adjusting unit 204 is configured to adjust the WLAN transmit power according to the WIFI user state to reduce mutual interference between the LTE and WLAN bands.
  • the WIFI user status is used to indicate the device used by the WIFI user.
  • the adjusting unit 204 can work according to the actual situation, for example, the signal quality can be redistributed first.
  • the working channel of the WLAN after the current working channel of the WLAN has been adjusted to the highest or lowest channel, but the signal quality is still lower than the preset quality threshold, the WLAN transmit power is adjusted according to the WIFI user state to reduce 'J, Mutual interference between LTE and WLAN bands.
  • the first signal in the preferred embodiment is an LTE signal
  • the second signal is a WLAN. Therefore, a method and a device for reducing mutual interference between LTE and WLAN devices are provided, which are used to solve the problem of mutual interference between LTE and WLAN devices. .
  • the method for reducing LTE and WLAN common device mutual interference includes: reducing a LTE and WLAN common device mutual interference device to monitor a received signal quality of an LTE terminal operating in a frequency band adjacent to a WLAN working frequency band
  • the signal quality is represented by a combination of the SINR and the RSRP.
  • the interference avoidance strategy is performed.
  • RSRP refers to the received power of the reference signal measured based on the reference signal of the cell, which is a linear average of the received power of each RSRE of the corresponding cell reference signal in the two slots in the system receiving bandwidth
  • SINR refers to the received The ratio of the strength of the wanted signal to the intensity of the received interfering signal (noise and interference).
  • the monitoring of the received signal quality includes: after accessing the LTE network, determining the acquired base station (eNB) signal strength, reporting the RSRP value and the SINR value; performing the WLAN working state by analyzing the RSRP and the SINR Adjustment.
  • eNB acquired base station
  • the process of performing the interference avoidance policy is as follows, including: reporting the working channel, the transmit power, and the WIFI user status of the WLAN in the current state, and reallocating according to the RSRP and SINR states during the LTE key work.
  • WLAN working channel Select a working channel with less interference with the LTE working channel for data transmission. If the WLAN channel has been adjusted to the highest or lowest channel, adjust the WLAN transmit power of the device according to the WIFI user status of the device to reduce LTE and Mutual interference between WLAN bands.
  • the method for reducing mutual interference between the LTE and the WLAN device in this embodiment can effectively avoid the occurrence of mutual interference.
  • the embodiment further provides a device for reducing mutual interference between LTE and WLAN devices, and the device includes an adjustment module and a monitoring determination module.
  • Each module of the device can work with the terminal during operation.
  • the internal structure of the terminal with mutual interference includes: LTE module, WLAN module, baseband data processing module, LTE antenna, WLAN antenna, and the like.
  • the LTE module mainly converts the data transmitted by the baseband data processing module to its digital baseband signal, and modulates the digital baseband signal to meet the radio frequency index required by the LTE transmission to facilitate transmission in space;
  • the LTE frequency band radio frequency signal is demodulated, so that the corresponding digital baseband signal is transmitted to the baseband data processing module, and the baseband data processing module performs related data operations, and records the RSRP value of the received base station signal and the acquired SINR value.
  • the WLAN module mainly converts the data transmitted by the baseband data processing module to its digital baseband signal, and modulates the digital baseband signal to meet the radio frequency index required for WLAN transmission to facilitate transmission in space;
  • the WLAN band RF signal is demodulated, so that the corresponding digital baseband signal is transmitted to the baseband data processing module, and the baseband data processing module performs related data operations. Record the working channel, transmit power, and WIFI user status of the WLAN in the current state.
  • the baseband data processing module mainly completes the processing of LTE and WLAN baseband signals and the work of the protocol layer, completes the transmission and interaction of the two digital signals, realizes the wireless transmission of data, and ensures the correctness and standardization of wireless access.
  • the LTE antenna is mainly responsible for the transmission of the LTE radio frequency signal, including the transmitted signal and the received signal.
  • the WLAN antenna is mainly responsible for the transmission of WLAN RF signals, including transmitting signals and receiving signals.
  • the monitoring and determining module of the device for reducing inter-device interference between the LTE and the WLAN is configured to receive the RSRP value and the SINR value reported by the LTE radio module, and the acquiring unit of the adjusting module is configured to obtain the WLAN working channel recorded by the WLAN radio module.
  • the working transmit power and the WIFI user status of the device are accessed, and the above information is reported to the monitoring decision module.
  • an instruction is sent to the adjustment module to call the adjustment unit to adjust the WLAN working state.
  • the baseband data processing module is used to process the two-band baseband digital signals and implement information interaction and feedback.
  • the LTE radio frequency module After receiving the signal sent by the baseband data processing module, the LTE radio frequency module amplifies the signal in an analog amplification manner and radiates through the antenna corresponding thereto, and simultaneously receives the LTE signal from the base station; the WLAN radio frequency module also transmits information through the antenna of the WLAN. Propagating out and receiving WLAN signals from other mobile terminals.
  • the LTE radio module radiates the energy out, and feeds back the RSRP value of the base station signal and the SINR value of the current environment to the monitoring decision module.
  • the WLAN radio module transmits the frequency information used by the radio frequency module to communicate with other mobile terminals.
  • the power information and the WIFI user status of the device are fed back to the acquisition unit of the adjustment module.
  • the monitoring and determining module After receiving the RSRP value and the SINR value reported by the LTE radio module, the monitoring and determining module sends an instruction to call the adjustment unit of the adjustment module to configure the working state of the WLAN according to an algorithm stored in the determination module.
  • the LTE and WLAN antennas are responsible for the radio frequency signal transmission of LTE and WLAN, respectively, including the transmitted signal and the received signal.
  • FIG. 5 is a flow chart showing the operation of the LTE and WLAN common device mutual interference device shown in FIG.
  • the workflow includes the following steps (step S502 to step S520).
  • Step S502 the device is powered on and starts to perform data transmission;
  • Step S504 the LTE radio frequency module reports the current RSRP and the SINR to the monitoring and determining module.
  • Step S506 The WLAN radio module reports the channel, the transmitting power, and the WIFI user status of the WLAN working to the acquiring unit to the acquiring unit.
  • the acquisition unit further transmits the above information to the monitoring decision module.
  • Step S508 the monitoring determination module determines, according to an algorithm stored therein, whether the current device is in a mutual interference state. If there is no mutual interference state, step S520 is performed; if it is in the interference state, step S510 is performed.
  • Step S510 determining a channel value that the WLAN needs to adjust, and adjusting the WLAN working channel by the adjusting unit.
  • Step S512 after the adjustment is completed, the LTE radio module reports the current RSRP and SINR to the monitoring and determining module again.
  • Step S514 the monitoring determination module determines, according to the received data, whether the current device is in a mutual interference state. If there is no mutual interference state, step S520 is performed, and if mutual interference still exists, then step S516 is performed.
  • Step S516 the adjusting unit checks whether the configured WLAN channel is the highest or lowest channel. If it is not the highest or lowest channel, then returning to step S504, the above process is repeated, and if it is the highest or lowest channel, then step S518 is reached.
  • Step S518, the adjusting unit reduces the WIFI transmission signal to reduce the WLAN to the LTE, according to the current working state of the WLAN radio module and the WIFI user state of the device, without affecting the use of the WIFI user accessing the device. Interference.
  • steps S514-S518 are repeated until the mutual interference condition satisfies the preset signal quality threshold set in the monitoring determination module, and the adjustment is completed, thereby finally minimizing the occurrence of mutual interference between the LTE and WLAN devices.
  • Step S520 the process ends.
  • the LTE working channel is B7 low channel and the working bandwidth is 10 MHz; the WLAN working channel is 13 channels, working bandwidth is 20MHz.
  • the monitoring and determining module obtains the information about the signal quality reported by the LTE radio module
  • the acquiring unit obtains the information reported by the WLAN radio module, and sends the information to the monitoring and determining module, and then determines that the current inter-disturbing state is performed, and issues an instruction to adjust the WLAN operation.
  • the channel is 8 channels. It can be seen that the interference of the LTE B7 transmission signal before and after the adjustment to the WIFI is greatly reduced, and the situation that the data transmission rate of the device is decreased due to the interference is avoided.
  • FIG. 7 is a schematic diagram of a transmission spectrum adjustment after the LTE band 40 and a WLAN common device are used as an example, wherein the LTE working channel is a B40 high channel and the working bandwidth is 10 MHz; the WLAN working channel is 1 channel, working bandwidth is 20MHz.
  • the monitoring and determining module obtains the information reported by the LTE radio module
  • the acquiring unit obtains the information reported by the WLAN radio module, and sends the information to the monitoring and determining module, determines that the current inter-disturbance state, and issues an instruction to adjust the WLAN working channel to 13 channels. It can be seen that the LTEB40 transmission signal before and after the adjustment has greatly reduced the interference of WIFI and WIFI to LTE B40.
  • the LTE radio module reports the current RSRP and SINR status to the monitoring and determination module again, and the monitoring and determination module analyzes that there is still some mutual interference. Phenomenon, and the monitoring and determining module monitors that the channel working by the current WLAN radio module is 13 channels (the highest channel), and therefore, according to the WIFI user state that accesses the device, the command is appropriately issued to reduce the transmit power during WLAN operation, which is better. It solves the mutual interference between LTE BAND40 and WLAN devices.
  • the embodiment of the invention monitors the signal quality of the first signal, and the signal quality is not reached.
  • the quality threshold is preset, the mutual interference of the devices in the adjacent band network is reduced by reasonably adjusting the working state of the second signal.
  • the method is simple and easy to implement, and can effectively reduce the influence of mutual interference after use, and solves the problem. There is no simple and versatile method in the prior art to solve the problem of mutual interference between devices in adjacent frequency bands.

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

Abstract

本发明公开了一种减少邻频段网络间共设备互扰的方法及装置，其中，该方法包括：对第一信号的信号质量进行监测；在信号质量低于预设质量门限值的情况下，调整第二信号的工作状态以降低设备互扰，其中，第一信号和第二信号为邻频段、相互存在干扰的信号。该方法简单、易行，使用后能够有效地减小互扰造成的影响，解决了现有技术中并没有一种简单、通用的方法来解邻频段网络间共设备互扰的问题。

Description

减少邻频段网络间共设备互扰的方法及装置 技术领域
本发明涉及无线通信领领域， 尤其是涉及一种减少邻频段网络间共设 备互扰的方法及装置。 背景技术
近年来， 随着移动通信技术的迅猛发展， 终端设备的功能也越来越呈 现多样化和复杂化， 特别是随着第三代移动通信技术（3G， 3rd-generation ) 和第四代移动通信技术（4G， 4rd-generation )技术的发展， 市场对智能终 端的需求与日倶增。 像智能机这些终端设备， 通常会要求在一个设备中同 时支持多种无线接入技术， 如： 长期演进（LTE， LongTermEvolution )网络 和无线局域网络（WLAN， Wireless Local Area Networks )等。 由于这些接 入技术是在相同或相近频段上， 一旦一起工作时， 处于发射状态的接入技 术由于功放和混频器等非线性器件的作用， 会在相邻信道产生泄漏， 通信 中通常用相邻频道泄漏比（ACLR， AdjacentChannelLeakageRatio )来衡量。 如果此时共设备的其它接入技术正处在接收状态， 将会受到的严重干扰。 这种干扰现象通常称为共设备互扰（或共存互扰）。 通常， 能避免共设备互 扰的方案大致分为硬件与软件两方面。
硬件方面， 一般是使用提高相邻频段隔离度的方法。 这种方法需要使 用带有高抑制度的滤波器以及高隔离度的天线系统， 其用于滤除 LTE与 WLAN临近信道的干扰信号。 但是在实际设计中， 使用高抑制度的滤波器 势必会引入一定得通路损耗， 影响产品的收发性能， 并给产品带来功耗， 设计一款高隔离度同时又拥有超宽带特性的天线系统并非一件容易的事 软件方面，通过对工作在与 WLAN工作频带相邻的频带上的 LTE系统进 行监测； 当距离干扰源最远的用户设备（ UE， User Equipment )上报的信道 质量信息（ CQI， Channel Quality Indicator )和距离干扰源最近的 UE上报的 CQI之间的差值大于预定义的门限值时， 执行干扰回避策略。 此方案需要 LTE基站对终端上报的信号质量进行检测， 并根据检测结果重新分配 UE所 占用的子频段， 由于引入了基站的判定， 真正实现起来难度很大， 且通用 性较差。
因此， 相关技术中并没有一种简单、 通用的方法来解决邻频段网络间 共设备互扰的问题。 发明内容
本发明实施例提供了一种减少邻频段网络间共设备互扰的方法及装 置， 用以解决现有技术中并没有一种简单、 通用的方法来解决邻频段网络 间共设备互扰的问题。
为解决上述技术问题， 一方面， 本发明实施例提供一种减少邻频段网 络间共设备互扰的方法， 包括： 对第一信号的信号质量进行监测； 在所述 信号质量低于预设质量门限值的情况下， 调整第二信号的工作状态以降低 设备互扰， 其中， 所述第一信号和所述第二信号为邻频段、 相互存在干扰 的信号。
优选地， 所述第一信号至少包括以下之一： LTE信号， WIMax信号； 所 述第二信号至少包括： WLAN信号。
优选地， 当所述第一信号为 LTE信号， 所述第二信号为 WLAN信号时， 所述方法包括： 对 LTE信号的信号质量进行监测； 在所述信号质量低于预设 质量门限值的情况下， 调整 WLAN工作状态以降低设备互扰。
优选地， 对 LTE信号的信号质量进行监测包括： 判断所述 LTE信号的信 号与干扰力 σ噪声比（ SINR， Signal to Interference plus Noise Ratio )是否氐于 预设 SINR门限值， 和 /或判断所述 LTE信号的参考信号接收功率 （RSRP， Reference Signal Receiving Power )是否低于预设 RSRP门限值。
优选地， 调整 WLAN工作状态包括： 获取当前状态下 WLAN的工作信 道， 根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所 述 LTE信号的工作信道互扰最小的工作信道进行数据传输。
针对选取与所述 LTE信号的工作信道互扰最小的工作信道进行数据传 输举例说明： 如 LTE的工作频段为 LTE BAND40 ( 2300-2400MHz )， 工作信 道为最高信道 2380MHZ(带宽 20MHz )，则 WIFI的工作信道（ 2400-2483MHz ) 可以选取 13信道（中间频点 2472MHZ, 20MHz带宽）， 这样可以保证两者的 工作信道距离最大， 互扰最小， 在这种调整情况下， 通常可以确保在处于 WIFI干扰中的 LTE工作信道的 SINR提高 2-4dB。
优选地， 调整 WLAN工作状态包括： 获取 WLAN的发射功率及接入的 WIFI用户状态， 根据所述 WIFI用户状态调整所述 WLAN发射功率， 以减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI用户状态用于指示 WIFI用户 使用的设备能够建立连接的极限参数值。
优选地， 调整 WLAN工作状态包括： 获取当前状态下 WLAN的工作信 道， 根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所 述 LTE信号的工作信道互扰最小的工作信道进行数据传输； 如果当前所述 WLAN的工作信道已经调整至最高或最低信道， 但所述信号质量仍低于所 述预设质量门限值时， 获取 WLAN的发射功率及接入的 WIFI用户状态， 根 据所述 WIFI用户状态调整所述 WLAN发射功率， 以减小 LTE与 WLAN频段 间的互扰， 其中， 所述 WIFI用户状态用于指示 WIFI用户使用的设备能够建 立连接的极限参数值。 针对根据所述 WIFI用户状态调整所述 WLAN发射功 率， 以减小 LTE与 WLAN频段间的互扰而言， 可采用 WIFI功控指令将 WIFI 发射功率由原本的最大值 （通常为 13dBm左右）， 调整至 50%发射功率 ( lOdBm左右）， 使 WIFI带外杂散功率落在 LTE频段内的干扰有效降低， 以 减少 WIFI对 LTE的干 4尤。
另一方面， 本发明实施例还提供一种减少邻频段网络间共设备互扰的 装置， 包括：
监测判定模块， 配置为对第一信号的信号质量进行监测； 调整模块， 配置为在所述信号质量低于预设质量门限值的情况下， 调整第二信号的工 作状态以降低设备互扰， 其中， 所述第一信号和所述第二信号为同频段、 相互存在干扰的信号。
所述监测判定模块， 在执行处理时， 采用中央处理器 （CPU， Central Processing Unit )、 数字信号处理器（DSP， Digital Signal Processor )或可编 程逻辑阵列 （FPGA， Field - Programmable Gate Array ) 实现。
优选地， 监测判定模块， 配置为在所述第一信号为 LTE信号的情况下， 对所述 LTE信号的信号质量进行监测； 调整模块， 配置为在所述第二信号为 WLAN信号， 且所述信号质量低于预设质量门限值的情况下， 调整 WLAN 工作状态以降低设备互扰。
优选地， 所述监测判定模块，还配置为判断所述 LTE信号的信号与干扰 加噪声比 SINR是否低于预设 SINR门限值， 和 /或判断所述 LTE信号的参考信 号接收功率 RSRP是否低于预设 RSRP门限值。
优选地， 所述调整模块包括： 获取单元， 配置为获取当前状态下 WLAN 的工作信道； 调整单元， 配置为根据所述信号质量重新分配所述 WLAN的 工作信道， 其中， 选取与所述 LTE信号的工作信道互扰最小的工作信道进行 数据传输。
所述调整模块， 在执行处理时， 采用中央处理器 （CPU， Central Processing Unit )、 数字信号处理器（DSP， Digital Signal Processor )或可编 程逻辑阵列 （FPGA， Field - Programmable Gate Array ) 实现。 优选地， 所述调整模块包括： 获取单元， 配置为获取 WLAN的发射功 率及接入的 WIFI用户状态； 调整单元， 配置为根据所述 WIFI用户状态调整 所述 WLAN发射功率， 以减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI 用户状态用于指示 WIFI用户使用的设备能够建立连接的极限参数值。
优选地， 所述调整模块包括： 获取单元， 配置为获取当前状态下 WLAN 的工作信道， 和 /或， 获取 WLAN的发射功率及接入的 WIFI用户状态； 调整 单元， 配置为根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所述 LTE信号的工作信道互扰最小的工作信道进行数据传输；还配置 为在当前所述 WLAN的工作信道已经调整至最高或最低信道， 但所述信号 质量仍低于所述预设质量门限值的情况下， 根据所述 WIFI用户状态调整所 述 WLAN发射功率， 以减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI 用户状态用于指示 WIFI用户使用的设备能够建立连接的极限参数值。
本发明实施例对第一信号的信号质量进行监测， 在信号质量没有达到 预设质量门限值时， 通过合理调整第二信号工作状态来减小邻频段网络间 共设备互扰， 该方法简单、 易行， 使用后能够有效地减小互扰造成的影响， 解决了现有技术中并没有一种简单、 通用的方法来解决邻频段网络间共设 备互扰的问题。 附图说明
图 1是本发明实施例中减少邻频段网络间共设备互扰的方法的流程图； 图 2是本发明实施例中一种减少邻频段网络间共设备互扰的装置的结 构框图；
图 3是本发明实施例中一种减少邻频段网络间共设备互扰的装置的优 选结构框图；
图 4是本发明优选实施例二中减小 LTE与 WLAN共设备互扰装置的系统 框图； 图 5是本发明优选实施例二中减小 LTE与 WLAN共设备互扰装置的工作 流程图；
图 6是本发明优选实施例二中一种使用了减小 LTE与 WLAN共设备互扰 方法后的发射频谱状态示意图；
图 7是本发明优选实施例二中另一种使用了减小 LTE与 WLAN共设备互 扰方法后的发射频谱状态示意图。 具体实施方式
为了解决现有技术中并没有一种简单、 通用的方法来解邻频段网络间 共设备互扰的问题， 本发明提供了一种减少邻频段网络间网络共设备互扰 的方法及装置， 以下结合附图以及实施例， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用以解释本发明， 并不限定本发 明。
目前经常会遇到同一系统中相邻频段信号同时工作而带来的互相干扰 (后文简称 "互扰"） 问题。 针对上述问题， 本发明实施例提供了一种减少 同频段网络间网络共设备互扰的方法， 该方法的流程如图 1所示， 包括步骤 S102至步骤 S104。
步骤 S102， 对第一信号的信号质量进行监测；
步骤 S104， 在信号质量低于预设质量门限值的情况下， 调整第二信号 的工作状态以降低设备互扰， 其中， 第一信号和第二信号为邻频段、 相互 存在干扰的信号。
实现过程中， 当第一信号的信号质量已经低于一个预设质量门限值， 则说明此时第一信号的信号受到第二信号的干扰较为严重， 此时， 通过调 整第二信号的工作状态来减少对第一信号的干扰， 例如调整第二信号的工 作信道， 使其工作信道远离第一信号的工作频带， 进而降低对第一信号的 干扰。 上述第一信号和第二信号的种类非常广泛， 当前最容易见到的共设备 互扰的两种信号为 WLAN与 LTE信号，当然，还有其他具备相似情况的信号， 例如 WIMax信号和 WLAN等。 下面对减少邻频段网络间网络共设备互扰的
LTE信号的信号质量进行监测； 在信号质量低于预设质量门限值的情况下， 调整 WLAN工作状态以降低设备互扰。
本发明实施例对 LTE的信号质量进行监测，在信号质量没有达到预设质 量门限值时， 通过合理调整 WLAN工作状态来减小 LTE与 WLAN共设备互 扰， 该方法简单、 易行， 使用后能够有效地减小互扰造成的影响， 解决了 现有技术中并没有一种简单、通用的方法来解决 LTE与 WLAN共设备互扰的 问题。
LTE信号的信号质量可以是 SINR和 RSRP中的任意一种的值或组合值， 本实施例中采用监测上述组合值来， 其监测的过程为判断 LTE信号的 SINR 是否低于预设 SINR门限值， 和 /或判断 LTE信号的 RSRP是否低于预设 RSRP 门限值。
在调整 WLAN工作状态时， 可以根据获取到的信息的不同来进行不同 的调整。 其中， 获取的信息可以是 WLAN的工作信道， 和 /或， WLAN的发 射功率及接入的 WIFI用户状态。
在获取到的信息为 WLAN的工作信道时， 可以根据信号质量重新分配 WLAN的工作信道， 其中， 选取与 LTE信号的工作信道互扰最小的工作信道 进行数据传输。
在获取到的信息为 WLAN的发射功率及接入的 WIFI用户状态时， 可以 根据 WIFI用户状态调整 WLAN发射功率， 以减小 LTE与 WLAN频段间的互 扰。
实现过程中， 如果通过某一种方法都无法达到一个理想的效果， 可以 将上述两种方法结合使用， 例如， 当前 WLAN的工作信道已经调整至最高 或最低信道， 但信号质量仍低于预设质量门限值时， 可以根据 WIFI用户状 态调整终端的 WLAN发射功率， 以减小 LTE与 WLAN频段间的互扰。
本发明实施例还提供了一种减少邻频段网络间共设备互扰的装置， 其 结构如图 2所示， 包括： 监测判定模块 10， 配置为对第一信号的信号质量进 行监测； 调整模块 20， 与监测判定模块 10耦合， 配置为在所述信号质量低 于预设质量门限值的情况下， 调整第二信号的工作状态以降低设备互扰， 其中， 所述第一信号和所述第二信号为邻频段、 相互存在干扰的信号。
当第一信号为 LTE信号， 所述第二信号为 WLAN信号的情况下， 监测判 定模块 10， 配置为对 LTE信号的信号质量进行监测； 调整模块 20， 配置为在 信号质量低于预设质量门限值的情况下， 调整 WLAN工作状态以降低设备 互扰。
上述的监测判定模块 10， 还可以配置为判断 LTE信号的 SINR是否低于 预设 SINR门限值， 和 /或判断 LTE信号的 RSRP是否低于预设 RSRP门限值。
图 3示出了上述装置的优选结构框图， 在图 3中， 其调整模块 20还包括： 获取单元 202， 和与获取单元 202耦合的调整单元 204。 获取单元 202可以获 取多种信息， 调整单元 204可以根据获取单元 202获取信息的不同而实现不 同方面的功能。其中，获取单元 202可以获取当前状态下 WLAN的工作信道， 和 /或， WLAN的发射功率及接入的 WIFI用户状态。
当获取单元 202获取到当前状态下 WLAN的工作信道时， 调整单元 204， 配置为根据信号质量重新分配 WLAN的工作信道。 其中， 选取与 LTE信号的 工作信道互扰最小的工作信道进行数据传输。
当获取单元 202获取到 WLAN的发射功率及接入的 WIFI用户状态时，调 整单元 204， 配置为根据 WIFI用户状态调整 WLAN发射功率， 以减小 LTE与 WLAN频段间的互扰。 其中， WIFI用户状态用于指示 WIFI用户使用的设备 能够建立连接的极限参数值。
当获取单元 202既获取到当前状态下 WLAN的工作信道， 又获取到 WLAN的发射功率及接入的 WIFI用户状态时，调整单元 204可以根据实际情 况进行工作， 例如， 可以先 居信号质量重新分配 WLAN的工作信道， 在 当前 WLAN的工作信道已经调整至最高或最低信道， 但信号质量仍低于预 设质量门限值的情况下， 再根据 WIFI用户状态调整 WLAN发射功率， 以减 'J、 LTE与 WLAN频段间的互扰。
优选实施例一
本优选实施例中的第一信号为 LTE信号， 第二信号为 WLAN， 因此， 提 供了一种减小 LTE与 WLAN共设备互扰的方法及装置， 用于解决 LTE与 WLAN共设备互扰问题。
本实施例提供的减小 LTE与 WLAN共设备互扰的方法包括： 减小 LTE与 WLAN共设备互扰的装置对工作在与 WLAN工作频带相邻的频带上的 LTE 终端的接收信号质量进行监测， 其中， 该信号质量通过 SINR与 RSRP组合值 体现； 当接收到 LTE信号的 SINR与 RSRP组合值低于一定门限时， 执行干扰 回避策略。 其中， RSRP是指基于小区的参考信号测量得到参考信号的接收 功率， 为在系统接收带宽内， 两个时隙上相应的小区参考信号的每个 RSRE 接收功率的线性平均； SINR是指接收到的有用信号的强度与接收到的干扰 信号 （噪声和干扰） 的强度比值。
进一步地， 对接收信号质量进行监测包括： 在接入 LTE网络后， 判定获 取的基站 （eNB )信号强度， 将 RSRP值与 SINR值进行上报； 通过对 RSRP 与 SINR的分析， 进行 WLAN工作状态的调整。
进一步地， 上述执行干扰回避策略的过程具体如下， 包括： 将当前状 态下 WLAN的工作信道， 发射功率以及接入该设备的 WIFI用户状态进行上 报， 根据 LTE重点工作时的 RSRP与 SINR状态重新分配 WLAN的工作信道， 选取与 LTE工作信道互扰较小的工作信道进行数据传输，如 WLAN信道已经 调整至最高或最低信道， 则根据接入该设备的 WIFI用户状态， 调整设备的 WLAN发射功率， 以减小 LTE与 WLAN频段间的互扰。
Band40、 Band41频段或 FDD-LTE Band7频段。本实施例的减小 LTE与 WLAN 共设备互扰的方法， 可以有效地避免互扰现象的产生。
本实施例还提供了一种减小 LTE与 WLAN共设备互扰的装置，改装置包 括调整模块和监测判定模块。 该装置的各个模块在工作时可以与终端进行 配合工作， 具备相互干扰的终端的内部构造包括： LTE模块， WLAN模块， 基带数据处理模块， LTE天线， WLAN天线等。
LTE模块主要将基带数据处理模块传输给它的数据转换为发射数字基 带信号， 并将此数字基带信号进行调制，使其满足 LTE发射所需求的射频指 标以便于在空间传输； 对空间接收到的 LTE频段射频信号进行解调，使之变 成对应的数字基带信号传输给基带数据处理模块， 由基带数据处理模块来 完成相关的数据操作， 记录接收到基站信号的 RSRP值以及获取的 SINR值。
WLAN模块主要将基带数据处理模块传输给它的数据转换为发射数字 基带信号， 并将此数字基带信号进行调制， 使其满足 WLAN发射所需求的 射频指标以便于在空间传输； 对空间接收到的 WLAN频段射频信号进行解 调， 使之变成对应的数字基带信号传输给基带数据处理模块， 由基带数据 处理模块来完成相关的数据操作。 记录当前状态下 WLAN的工作信道、 发 射功率以及接入该设备的 WIFI用户状态。
基带数据处理模块主要完成 LTE以及 WLAN基带信号的处理以及协议 层的工作， 完成两个制式数字信号的传输以及交互， 实现数据的无线传输 工作， 确保无线接入的正确性与规范性。
LTE天线主要负责 LTE射频信号的传输， 包括发射信号与接收信号。 WLAN天线主要负责 WLAN射频信号的传输， 包括发射信号与接收信 号。
本实施例提供的减小 LTE与 WLAN共设备互扰的装置的监测判定模块 负责接收 LTE射频模块上报的 RSRP值与 SINR值， 调整模块的获取单元配置 为获取 WLAN射频模块记录的 WLAN工作信道， 工作发射功率以及接入该 设备的 WIFI用户状态， 并将上述信息上报至监测判定模块。 根据监测判定 模块内部的调度算法， 发出指令至调整模块， 以调用调整单元调整 WLAN 工作状态。
优选实施例二
图 4是减小 LTE与 WLAN共设备的互扰装置的系统框图。 基带数据处理 模块用来处理两频段的基带数字信号， 并实现信息的交互与反馈。 LTE射频 模块在接到基带数据处理模块发出的信号之后， 以模拟放大的方式将信号 放大并通过与其对应的天线辐射出去， 同时接收来自基站的 LTE信号； WLAN射频模块也通过 WLAN的天线将信息传播出去， 并接收来自其他移 动终端的 WLAN信号。 LTE射频模块将能量辐射出去的同时， 向监测判定模 块反馈接收到基站信号的 RSRP值与当前环境的 SINR值； 同时， WLAN射频 模块将自身与其他移动终端通信时所使用的频点信息， 发射功率信息以及 接入该设备的 WIFI用户状态反馈给调整模块的获取单元。 监测判定模块接 收到 LTE射频模块上报的 RSRP值与 SINR值后， 根据存储在判定模块内部的 算法， 发出指令调用调整模块的调整单元以配置 WLAN的工作状态。 LTE 与 WLAN天线分别负责 LTE与 WLAN的射频信号传输，包括发射信号与接收 信号。
图 5是图 4中示出的减小 LTE与 WLAN共设备互扰装置的工作流程图。其 工作流程包括如下步骤（步骤 S502至步骤 S520 )。
步骤 S502， 此设备开机联网并开始进行数据传输； 步骤 S504， LTE射频模块向监测判定模块上报当前 RSRP与 SINR。
步骤 S506， WLAN射频模块向获取单元上报 WLAN工作的信道， 发射 功率以及接入该设备的 WIFI用户状态。 获取单元进一步将上述信息传输至 监测判定模块。
步骤 S508， 监测判定模块根据其内部存储的算法判别当前设备是否处 于互扰状态。 如果处于无互扰状态， 则执行步骤 S520; 如果处于干扰状态， 则执行步骤 S510。
步骤 S510，确定 WLAN需要调整到的信道值，并由调整单元调整 WLAN 工作信道。
步骤 S512， 调整完毕后， LTE射频模块再次向监测判定模块上报当前 RSRP与 SINR。
步骤 S514， 监测判定模块根据收到的数据， 再次判别当前设备是否处 于互扰状态。 如果处于无互扰状态， 则执行步骤 S520， 如果仍然存在互扰， 则进入步骤 S516。
步骤 S516， 调整单元检查其配置的 WLAN信道是否为最高或最低信道。 如果不是最高或最低信道， 则返回步骤 S504， 重复执行上述过程， 如果是 最高或最低信道， 则进入步骤 S518。
步骤 S518， 调整单元根据当前 WLAN射频模块工作的状态以及接入该 设备的 WIFI用户状态， 在不影响接入该设备的 WIFI用户使用的情况下， 降 低 WIFI的发射信号， 以减小 WLAN对 LTE的干扰。
完成之后重复执行步骤 S514-S518， 直到互扰情况满足监测判定模块中 设定的预设信号质量门限值， 调整完成， 最终达到最大程度上减小 LTE与 WLAN共设备的互扰出现。
步骤 S520， 流程结束。
下面根据具体的 LTE频带下使用上述装置后的示意图说明本实施例达 到的效果。
图 6是以 LTE band7与 WLAN共设备为例，使用该减小 LTE与 WLAN共设 备干扰的方法后的发射频谱调整示意图， 其中 LTE工作信道为 B7低信道， 工作带宽为 10MHz; WLAN工作信道为 13信道， 工作带宽为 20MHz。 当监 测判定模块获取到 LTE射频模块上报的信号质量的信息后，获取单元获取到 WLAN射频模块上报的信息， 并发送给监测判定模块后， 可以判断当前处 于互扰状态， 并发出指令调整 WLAN工作信道为 8信道， 可以看到调整前后 的 LTE B7发射信号对于 WIFI的干扰大幅度下降， 避免了由于干扰导致设备 传输数据速率下降的情况。
图 7是以 LTE band40与 WLAN共设备为例， 使用该减小 LTE与 WLAN共 设备干扰的方法后的发射频谱调整示意图， 其中 LTE工作信道为 B40高信 道， 工作带宽为 10MHz; WLAN工作信道为 1信道， 工作带宽为 20MHz。 当 监测判定模块获取到 LTE射频模块上报的信息后，获取单元获取到 WLAN射 频模块上报的信息， 并发送给监测判定模块后， 判断当前处于互扰状态， 并发出指令调整 WLAN工作信道为 13信道， 可以看到调整前后的 LTEB40发 射信号对于 WIFI以及 WIFI对 LTE B40的干扰均有大幅度下降， LTE射频模块 再次向监测判定模块上报当前 RSRP与 SINR状态，监测判定模块分析当前仍 存在一定互扰现象， 并监测判定模块通过获取单元监测到当前 WLAN射频 模块工作的信道为 13信道 (最高信道）， 因此根据接入该设备的 WIFI用户状 态发出指令适当降低 WLAN工作时的发射功率，更好的解决了 LTE BAND40 与 WLAN共设备的互扰情况。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。 工业实用性
本发明实施例对第一信号的信号质量进行监测， 在信号质量没有达到 预设质量门限值时， 通过合理调整第二信号工作状态来减小邻频段网络间 共设备互扰， 该方法简单、 易行， 使用后能够有效地减小互扰造成的影响， 解决了现有技术中并没有一种简单、 通用的方法来解决邻频段网络间共设 备互扰的问题。

Claims

权利要求书
1、 一种减少邻频段网络间共设备互扰的方法， 该方法包括：
对第一信号的信号质量进行监测；
在所述信号质量低于预设质量门限值的情况下， 调整第二信号的工作 状态， 其中， 所述第一信号和所述第二信号为邻频段、 相互存在干扰的信 号。
2、 如权利要求 1所述的方法， 其中， 所述第一信号至少包括以下之一： LTE信号， WIMax信号； 所述第二信号至少包括： WLAN信号。
3、 如权利要求 1所述的方法， 其中， 当所述第一信号为 LTE信号， 所述 第二信号为 WLAN信号时， 所述方法包括：
对 LTE信号的信号质量进行监测；
在所述信号质量低于预设质量门限值的情况下， 调整 WLAN工作状态。
4、 如权利要求 3所述的方法， 其中， 对 LTE信号的信号质量进行监测包 括：
判断所述 LTE信号的信号与干扰加噪声比 SINR是否低于预设 SINR门限 值， 和 /或判断所述 LTE信号的参考信号接收功率 RSRP是否低于预设 RSRP 门限值。
5、 如权利要求 3或 4所述的方法， 其中， 调整 WLAN工作状态包括： 获取当前状态下 WLAN的工作信道， 根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所述 LTE信号的工作信道互扰最小的工作 信道进行数据传输。
6、 如权利要求 3或 4所述的方法， 其中， 调整 WLAN工作状态包括： 获取 WLAN的发射功率及接入的 WIFI用户状态， 根据所述 WIFI用户状 态调整所述 WLAN发射功率来减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI用户状态用于指示 WIFI用户使用的设备能够建立连接的极限参数值。
7、 如权利要求 3或 4所述的方法， 其中， 调整 WLAN工作状态包括： 获取当前状态下 WLAN的工作信道， 根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所述 LTE信号的工作信道互扰最小的工作 信道进行数据传输；
如果当前所述 WLAN的工作信道已经调整至最高或最低信道， 但所述 信号质量仍低于所述预设质量门限值时， 获取 WLAN的发射功率及接入的 WIFI用户状态， 根据所述 WIFI用户状态调整所述 WLAN发射功率来减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI用户状态用于指示 WIFI用户 使用的设备能够建立连接的极限参数值。
8、 一种减少邻频段网络间共设备互扰的装置， 该装置包括： 监测判定模块， 配置为对第一信号的信号质量进行监测；
调整模块， 配置为在所述信号质量低于预设质量门限值的情况下， 调 整第二信号的工作状态， 其中， 所述第一信号和所述第二信号为同频段、 相互存在干扰的信号。
9、 如权利要求 8所述的装置， 其中，
所述监测判定模块， 配置为在所述第一信号为 LTE信号的情况下，对所 述 LTE信号的信号质量进行监测；
所述调整模块， 配置为在所述第二信号为 WLAN信号， 且所述信号质 量低于预设质量门限值的情况下， 调整 WLAN工作状态。
10、 如权利要求 9所述的装置， 其中，
所述监测判定模块，还配置为判断所述 LTE信号的信号与干扰加噪声比 SINR是否低于预设 SINR门限值， 和 /或判断所述 LTE信号的参考信号接收功 率 RSRP是否低于预设 RSRP门限值。
11、 如权利要求 9或 10所述的装置， 其中， 所述调整模块包括： 获取单元， 配置为获取当前状态下 WLAN的工作信道； 调整单元， 配置为根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所述 LTE信号的工作信道互扰最小的工作信道进行数据传输。
12、 如权利要求 9或 10所述的装置， 其中， 所述调整模块包括： 获取单元， 配置为获取 WLAN的发射功率及接入的 WIFI用户状态； 调整单元， 配置为根据所述 WIFI用户状态调整所述 WLAN发射功率来 减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI用户状态用于指示 WIFI 用户使用的设备能够建立连接的极限参数值。
13、 如权利要求 9或 10所述的装置， 其中， 所述调整模块包括： 获取单元， 配置为获取当前状态下 WLAN的工作信道， 和 /或， 获取 WLAN的发射功率及接入的 WIFI用户状态；
调整单元， 配置为根据所述信号质量重新分配所述 WLAN的工作信道， 其中， 选取与所述 LTE信号的工作信道互扰最小的工作信道进行数据传输； 还配置为在当前所述 WLAN的工作信道已经调整至最高或最低信道， 但所 述信号质量仍低于所述预设质量门限值的情况下， 根据所述 WIFI用户状态 调整所述 WLAN发射功率来减小 LTE与 WLAN频段间的互扰， 其中， 所述 WIFI用户状态用于指示 WIFI用户使用的设备能够建立连接的极限参数值。
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CN104244354A (zh) 2014-12-24

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