WO2016154908A1 - 一种无线通信控制方法和装置 - Google Patents

一种无线通信控制方法和装置 Download PDF

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Publication number
WO2016154908A1
WO2016154908A1 PCT/CN2015/075546 CN2015075546W WO2016154908A1 WO 2016154908 A1 WO2016154908 A1 WO 2016154908A1 CN 2015075546 W CN2015075546 W CN 2015075546W WO 2016154908 A1 WO2016154908 A1 WO 2016154908A1
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Prior art keywords
channel
coding mode
modulation
level
current service
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English (en)
French (fr)
Inventor
邓任钦
袁德生
尤中乾
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SZ DJI Technology Co Ltd
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SZ DJI Technology Co Ltd
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Priority to PCT/CN2015/075546 priority Critical patent/WO2016154908A1/zh
Priority to CN201580060909.9A priority patent/CN107005343B/zh
Publication of WO2016154908A1 publication Critical patent/WO2016154908A1/zh
Anticipated expiration legal-status Critical
Priority to US15/722,520 priority patent/US10686551B2/en
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    • 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
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • 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
    • 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
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H04B2001/7154—Interference-related aspects with means for preventing interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • 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
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a wireless communication control method and apparatus.
  • a high-order MCS Modulation Coding Scheme
  • MCS Modulation Coding Scheme
  • the currently used adaptive modulation and coding method adjusts the modulation and coding method using only the signal-to-noise ratio information, this method has hysteresis, and the ISM unlicensed frequency band with many burst interferences, especially in some guarantees ultra-low delay and error retransmission.
  • the traditional AMC method does not react quickly enough, which can easily cause a drop in throughput and data errors.
  • the embodiment of the invention provides a wireless communication control method and device, which can accurately control the wireless communication mode and is suitable for an ISM unlicensed frequency band with many bursts of interference.
  • the present invention provides a wireless communication control method, including:
  • the wireless communication control mode is determined in conjunction with the signal to noise ratio of the current channel and the transmission error ratio.
  • determining the wireless communication control mode by combining the signal to noise ratio of the current channel and the transmission error ratio, including coordinating the use of channel frequency hopping and modulation coding mode level switching to determine wireless communication control System.
  • the cooperatively uses a channel hopping and a modulation coding mode level to determine a wireless communication control manner including:
  • the transmission error ratio of the current service is greater than a preset threshold, obtain a modulation and coding mode level corresponding to a signal to noise ratio mapping interval in which the current channel's signal to noise ratio is located, and obtain a modulation and coding mode level that the current service should adopt;
  • the level of the modulation and coding mode that the current service should adopt is smaller than the level of the modulation and coding mode actually used by the current service, the level of the modulation and coding mode actually used by the current service is reduced to the level of the modulation and coding mode that the current service should use.
  • the cooperatively uses a channel hopping and a modulation coding mode level to determine a wireless communication control manner including:
  • the handover modulation coding mode level or the handover channel is selected according to the number of times of channel switching in the predetermined time.
  • the selecting a switching modulation coding mode level or a switching channel according to the number of times of channel switching in a predetermined time includes:
  • the optimal channel in the currently available channel is acquired, and the channel is switched to the optimal channel.
  • the acquiring the optimal channel in the currently available channel includes:
  • the channel with the least background interference among all available channels is determined according to the background interference average.
  • the acquiring the optimal channel in the currently available channel further includes:
  • the culling the channel corresponding to the partial scan peak according to the preset condition including:
  • the selecting a switching modulation coding mode level or a switching channel according to the number of times of channel switching in a predetermined time further includes:
  • the modulation coding mode level is lowered to a preset modulation coding mode level.
  • the cooperatively uses a channel hopping and a modulation coding mode level to determine a wireless communication control manner including:
  • the modulation coding mode level is adjusted if the transmission error ratio is less than or equal to a preset threshold.
  • the adjusting the modulation and coding mode level includes:
  • the modulation coding mode corresponding to the mapping interval reduces the level of the modulation coding mode actually used by the current service to a preset modulation coding mode level.
  • the adjusting the modulation and coding mode level includes:
  • the modulation coding mode level actually used by the current service is less than or equal to the signal to noise ratio of the current channel
  • the modulation coding mode corresponding to the mapping interval keeps the level of the modulation coding mode actually used by the current service unchanged.
  • the adjusting the modulation and coding mode level includes:
  • the level of the modulation and coding mode actually used by the current service is adjusted to the level of the modulation and coding mode that the current service should adopt, including:
  • the modulation coding mode level actually used by the current service is raised, the modulation coding mode level is adjusted according to a preset hysteresis value.
  • the method further includes:
  • the signal to noise ratio mapping intervals corresponding to the modulation coding modes of the respective levels are corrected.
  • the calculating the interference estimation result of the channel by using the channel scan result includes:
  • the weighted average estimated weight is a forgetting factor, and the forgetting factor takes a larger value as it is closer to the current time.
  • the transmission error ratio includes at least one of the following: a packet error rate, a bit error rate, a block error rate, and a frame error rate.
  • the present invention also provides a wireless communication control apparatus, including:
  • An estimation module configured to estimate a signal to noise ratio of the current channel according to a historical measurement result of the signal to noise ratio
  • the obtaining module is configured to obtain a transmission error ratio of the current service
  • a control module configured to determine a wireless communication control mode by combining a signal to noise ratio of the current channel and the transmission error ratio.
  • control module includes a control submodule for cooperatively using channel frequency hopping and tuning
  • the switching of the coding mode level determines the wireless communication control mode.
  • control submodule includes:
  • An obtaining unit configured to obtain a modulation coding mode level corresponding to a signal to noise ratio mapping interval of a signal to noise ratio of the current channel, if a transmission error ratio of the current service is greater than a preset threshold, and obtain a modulation code that should be used by the current service.
  • Mode level a modulation coding mode level corresponding to a signal to noise ratio mapping interval of a signal to noise ratio of the current channel, if a transmission error ratio of the current service is greater than a preset threshold, and obtain a modulation code that should be used by the current service.
  • a first control unit configured to reduce a modulation coding mode level actually used by the current service to the current service if the modulation coding mode level that the current service should adopt is smaller than a modulation coding mode level actually used by the current service Modulation coding mode level.
  • control sub-module further includes: a second control unit, configured to: if a modulation coding mode level that should be adopted by the current service is greater than or equal to a modulation coding mode level actually used by the current service, according to a predetermined time The number of channel switchings selects the switching modulation coding mode level or the switching channel.
  • the second control unit is specifically configured to: if the channel is switched within a predetermined time If it is less than the predetermined threshold, the optimal channel in the currently available channel is acquired, and the channel is switched to the optimal channel.
  • the second control unit is specifically configured to separately obtain background environment noise scan results of all available channels, and perform weighted average estimation on scan results of a predetermined number of time points of background environment noise of each available channel, respectively.
  • the background interference average of the available channels; the channel with the least background interference among all available channels is determined according to the background interference average.
  • the second control unit is further configured to acquire a scan peak in a scan result of each available channel at a predetermined number of time points, and cull the channel corresponding to the partial scan peak according to a preset condition, and from the remaining available channels The channel with the smallest background interference average is selected as the optimal channel.
  • the second control unit is specifically configured to remove a channel corresponding to a preset number of large scan peaks in the scan peak of the scan result, or remove a scan peak of the scan result that is greater than a preset value The channel corresponding to the scan peak.
  • the second control unit is further configured to reduce the modulation and coding mode level to a preset modulation and coding mode level if the number of times of channel switching is greater than or equal to a predetermined threshold within a predetermined time.
  • control submodule includes a third control unit, configured to adjust the modulation and coding mode level if the transmission error ratio is less than or equal to a preset threshold.
  • the third control unit is specifically configured to: if the transmission error ratio of the current service or the transmission error ratio of the service in the predetermined time period before the current time is greater than 0, and if the current service actually adopts a modulation coding mode level
  • the modulation coding mode corresponding to the SNR mapping interval in which the SNR of the current channel is located is reduced to a preset modulation coding mode level.
  • the third control unit is specifically configured to: if a transmission error ratio of the current service or a transmission error ratio of a service in a predetermined time period before the current time is greater than 0, and a modulation coding mode level actually used by the current service
  • the modulation and coding mode corresponding to the signal-to-noise ratio mapping interval in which the signal-to-noise ratio of the current channel is less than or equal to the level of the modulation and coding mode actually used by the current service is unchanged.
  • the third control unit is specifically configured to: if a transmission error ratio of the current service and a transmission error ratio of a service in a predetermined time period before the current time are both equal to 0, obtain a signal to noise ratio of the current channel.
  • the third control unit is specifically configured to: when the modulation coding mode level actually used by the current service is raised, adjust the modulation coding mode level according to a preset hysteresis value.
  • the device further includes: an adjustment module, configured to acquire a channel scan result, and calculate an interference estimation result of the channel according to the channel scan result; and respectively corresponding to each level of the modulation and coding mode according to the interference estimation result The SNR mapping interval is corrected.
  • an adjustment module configured to acquire a channel scan result, and calculate an interference estimation result of the channel according to the channel scan result; and respectively corresponding to each level of the modulation and coding mode according to the interference estimation result The SNR mapping interval is corrected.
  • the adjusting module is configured to obtain a background average noise scan result of the channel and perform a weighted average estimation to obtain an interference estimation result of the channel.
  • the weighted average estimated weight is a forgetting factor, and the forgetting factor takes a larger value as it is closer to the current time.
  • the transmission error ratio includes at least one of the following: a packet error rate, a bit error rate, a block error rate, and a frame error rate.
  • the signal to noise ratio of the current channel is estimated according to the historical measurement result of the signal to noise ratio, and the transmission error ratio of the current service is obtained, and the wireless communication control mode is determined according to the signal to noise ratio of the current channel and the transmission error ratio, because Combining the transmission error ratio of the current service with the signal-to-noise ratio of the current channel to jointly determine the wireless communication control mode, the transmission error ratio of the current service can directly reflect the data transmission condition, making the wireless communication control more accurate and sensitive. It can be applied to ISM unlicensed bands with many bursts of interference.
  • FIG. 1 is a schematic block diagram of a wireless communication control method according to an embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of another wireless communication control method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a principle of service data processing in a wireless communication control method according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an application scenario of a wireless communication control method according to an embodiment of the present disclosure
  • FIG. 5-a is a schematic structural diagram of a wireless communication control apparatus according to an embodiment of the present invention.
  • FIG. 5-b is a schematic structural diagram of a control module according to an embodiment of the present disclosure.
  • FIG. 5-c is a schematic structural diagram of a control submodule according to an embodiment of the present disclosure.
  • FIG. 5-d is a schematic structural diagram of another control submodule according to an embodiment of the present disclosure.
  • FIG. 5-e is a schematic structural diagram of another control submodule according to an embodiment of the present invention.
  • FIG. 5-f is a schematic structural diagram of another wireless communication control apparatus according to an embodiment of the present invention.
  • the embodiment of the invention provides a wireless communication control method and device, which can accurately control the wireless communication mode and is suitable for an ISM unlicensed frequency band with many bursts of interference.
  • the wireless communication method may include the following steps:
  • the signal to noise ratio measurement recorded by the current channel before the current time is obtained. That is, the historical measurement result of the signal to noise ratio is obtained, and the signal to noise ratio of the current channel is estimated according to the historical measurement result of the signal to noise ratio.
  • a plurality of SINRs before this are obtained according to the channel estimator, and the prediction of the SINR is performed based on the measurement results of the past p SINRs.
  • a k is the coefficient of the prediction filter, and the coefficient can be adjusted in real time using a fixed coefficient or using an adaptive filter.
  • P is the number of sampling points of the signal-to-noise ratio, and the value of P can be determined according to the period of the frequency sweep and the frequency of the interference.
  • the transmission error ratio generated by the current service transmission may be acquired, that is, the current ongoing service transmission is counted to obtain the error condition of the service transmission.
  • the basis for measuring the error condition of the service transmission may be a transmission error ratio, which may be obtained by calculating a ratio of the service data being accurately transmitted over a period of time, and the transmission error ratio may include at least one of the following: Packet error rate, bit error rate, block error rate, and frame error rate.
  • a specific parameter description of the transmission error ratio can be made in combination with the division unit of the data.
  • the wireless communication control mode may be determined according to the signal-to-noise ratio and the transmission error ratio of the current channel, and the wireless communication control mode may include multiple control contents in the wireless communication, for example, may include channel switching and modulation coding selection, etc., and specifically need to be combined Apply the scene to set.
  • the description of the present invention by the above embodiment shows that the signal-to-noise ratio of the current channel is estimated according to the historical measurement result of the signal-to-noise ratio, and the transmission error ratio of the current service is obtained, and the wireless communication is determined according to the signal-to-noise ratio of the current channel and the transmission error ratio.
  • the control mode since the wireless communication control mode is jointly determined by combining the transmission error ratio of the current service and the signal-to-noise ratio of the current channel, the transmission error ratio of the current service can directly reflect the data transmission condition, so that the wireless communication control is more accurate. It has high sensitivity and can be applied to ISM unlicensed bands with many bursts of interference.
  • FIG. 2 Please refer to another embodiment of the present invention, as shown in FIG. 2, which may specifically include the following steps:
  • Step 201 and step 202 are similar to steps 101 and 102 in the foregoing embodiment.
  • step 203 the foregoing acquires a signal-to-noise ratio of the current channel and a transmission error ratio of the current service, and uses a channel hopping frequency hopping and a modulation coding mode level to determine a wireless communication control mode, where
  • the channel hopping is determined according to the signal-to-noise ratio of the current channel and the transmission error ratio of the current service, whether to perform the frequency hopping operation on the current channel and the target channel to be switched to, and specifically, the application scenario is used to determine the signal noise in the current channel.
  • Channel hopping is performed when what kind of threshold relationship is satisfied than what conditions and transmission error ratios are satisfied.
  • the switching of the modulation coding mode level can also determine which level of modulation coding mode can be used in combination with the signal to noise ratio of the current channel and the transmission error ratio of the current service. Since the transmission error ratio of the current service can directly reflect the transmission condition of the data, it is more accurate and highly sensitive when performing channel frequency hopping and modulation coding mode switching, and can be applied to an ISM unlicensed frequency band with many burst interferences.
  • the step 203 determines the wireless communication control mode by using the switching of the channel frequency hopping and the modulation coding mode, and may specifically include the following steps:
  • A1 If the transmission error ratio of the current service is greater than a preset threshold, obtain a modulation coding mode level corresponding to a signal to noise ratio mapping interval in which the signal to noise ratio of the current channel is located, and obtain a modulation coding mode level that the current service should adopt;
  • the level of the modulation and coding mode that the current service should use is smaller than the level of the modulation and coding mode actually used by the current service, the level of the modulation and coding mode actually used by the current service is reduced to the level of the modulation and coding mode that the current service should use.
  • the transmission error ratio of each service may be set to a threshold, and it is determined whether the transmission error ratio of the current service is greater than a preset threshold.
  • Step A1 may be performed when the transmission error ratio of the current service is greater than a preset threshold.
  • the noise ratio mapping interval is a size interval of the signal-to-noise ratio. The interval includes two endpoint values. According to the endpoint value, all values of the signal-to-noise ratio can be divided into multiple intervals, and each signal-to-noise ratio is used.
  • the mapping interval corresponds to a modulation coding mode level, that is, MCS.
  • the SINR has three endpoint values, namely: SINR 1 and SINR 2 , SINR 3 , then SINR 1 , SINR 2 , and SINR 3 can divide the entire SINR mapping interval into four parts, each part corresponding to one MCS level.
  • the MCS can be divided into four corresponding levels, respectively :MCS 0 , MCS 1 , MCS 2 , MCS 3 , please refer to the table corresponding to the MCS level and SINR mapping interval as shown in Table 1 below:
  • Each MCS level in Table 1 corresponds to an MCS interval.
  • Each MCS interval includes two left and right endpoint values.
  • the corresponding relationship between the SINR mapping interval and the MCS level can be used to obtain the MCS level that the current service should use.
  • the SINR is exactly the critical value between the two intervals, the lower MCS level of the two MCS levels corresponding to the SINR is selected.
  • a higher MCS level can also be selected.
  • step A1 if the transmission error ratio of the current service is greater than the preset threshold, the current service transmission condition is poor, and more error transmission occurs.
  • the preset threshold may be set in combination with the specific situation, and the current channel is adopted.
  • the signal-to-noise ratio can determine the signal-to-noise ratio mapping interval in which the signal-to-noise ratio falls. Then, through the correspondence between the signal-to-noise ratio mapping interval and the modulation coding mode level, the modulation coding mode level that should be adopted for the current service can be obtained. .
  • the modulation coding mode level that should be used in the current service refers to the theoretical value of the modulation coding mode determined according to the signal-to-noise ratio of the current channel.
  • the modulation coding mode level actually used by the current service refers to the actual modulation coding mode level actually used in the current industry. Value, these two values may be different. Before performing step A2, it is still necessary to determine the size relationship between the modulation coding mode level that the current service should adopt and the modulation coding mode level actually used by the current service. The modulation coding mode level that should be adopted in the current service is smaller than the modulation coding actually used by the current service. In the case of the mode level, step A2 is performed. The level of the modulation and coding mode actually used by the current service is switched.
  • the level of the modulation and coding mode that the current service should use is smaller than the level of the modulation and coding mode actually used by the current service, indicating that the current modulation mode of the service is too large, and needs to be lowered. Therefore, the level of the modulation and coding mode actually used by the current service is lowered to the level of the modulation and coding mode that the current service should use.
  • the threshold size is determined according to the type of transmission service, such as transmitting a video message. No. If the transmission error ratio (such as the bit error rate) is too high and exceeds the preset threshold, then the video will be spent or stuck. At this time, it is necessary to reduce the modulation coding mode used by the current service.
  • the transmission error ratio such as the bit error rate
  • the step 203 determines the wireless communication control mode by using the channel hopping and the modulation coding mode level switching, which may include the following steps:
  • the handover modulation coding mode level or the handover channel is selected according to the number of channel switching times in the predetermined time.
  • the transmission error ratio of each service may be set to a threshold, and it is determined whether the current service transmission error ratio is greater than a preset threshold. Further, when the transmission error ratio of the current service is greater than a preset threshold, the current service needs to be further determined.
  • the relationship between the level of the modulation and coding mode that should be used and the level of the modulation and coding mode actually used by the current service If the level of the modulation and coding mode that the current service should use is greater than or equal to the level of the modulation and coding mode actually used by the current service, the predetermined time is obtained.
  • the number of times of intra-channel switching determines whether to switch the modulation coding mode level or the current channel according to the number of times of channel switching, that is, whether to select the debugging mode or select the frequency hopping. For example, if the number of channel switching times that the system has completed in a time period (for example, 2 seconds) between the current time has reached more than 2 times, it indicates that the modulation coding mode level actually used by the current service needs to be adjusted, if one before the current time In the time period (for example, 2 seconds), the number of channel switchings that have been completed by the system is not more than 2 times, and the switching channel can be performed.
  • the predetermined time may be 1 second, 3 seconds, 4 seconds, etc., and the number of times of switching may also be 1, 3, 4, and the like.
  • step B1 selects a handover modulation coding mode level or a handover channel according to the number of times of channel switching in a predetermined time, and specifically includes the following steps:
  • the optimal channel in the currently available channel refers to the channel with the best channel quality among all currently available channels, and the channel used in the current service is switched to the optimal channel, so that the current service can be transmitted in the optimal channel. Improve the throughput of business processing.
  • obtaining the optimal channel in the currently available channel in step B11 may specifically include the following steps:
  • B111 Obtain background environment noise scan results of all available channels respectively, perform weighted average estimation on scan results of a predetermined number of time points of background environment noise of each available channel, and obtain an average background interference of each available channel;
  • B112. Determine, according to the background interference average, a channel with the smallest background interference among all available channels.
  • step B111 channel scanning is performed on all available channels, the background power of each channel is scanned, the background environment noise scanning result of each channel is obtained, and then a predetermined number of time points are selected for each available channel.
  • the background interference average can directly measure the background interference of each available channel, and then performing step B112, and selecting the channel with the least background interference is the most determined. Excellent channel.
  • the weighting factor is used as the forgetting factor when calculating the background interference average by the weighted average estimation, that is, the weight value closer to the current time is larger.
  • step B11 acquires an optimal channel in the currently available channel, and may further include the following steps:
  • B113 Obtain a scan peak in a scan result of each available channel at a predetermined number of time points, remove a channel corresponding to a partial scan peak according to a preset condition, and select a channel with a minimum background interference average from the remaining available channels as an optimal channel.
  • the predetermined number may be 5 times, 4 times, or a number thereof.
  • the scan peak needs to be eliminated to ensure the reliability of the scrambled average estimation, and the scan peak can be eliminated according to preset conditions.
  • the culled scan value participates in the calculation of the weighted average estimate, and then selects the channel with the smallest background interference, that is, the smallest interference channel, as the optimal channel.
  • step B113 the channel corresponding to the partial scan peak is removed according to the preset condition, including:
  • the preset culling condition may be set to cull the channel corresponding to the preset number of scan values, or to cull the channel corresponding to the scan value whose scan value exceeds the preset value.
  • the preset number can be 2
  • the channel corresponding to the 2 scan peaks with the largest scan peak value needs to be eliminated, and if an upper limit is set, the channel corresponding to the scan peak exceeding the upper limit is removed.
  • the specific culling conditions can be set in combination with specific application scenarios. As a limitation of the invention.
  • the step B1 selects a switching modulation coding mode level or a switching channel according to the number of times of channel switching in a predetermined time, and specifically includes the following steps:
  • the modulation coding mode level is lowered to a preset modulation coding mode level.
  • the level of the modulation and coding mode actually used by the current service needs to be reduced to a preset modulation and coding mode level.
  • the level of the modulation coding mode actually used by the current service can be forcibly reduced by one or two preset levels.
  • the step 203 determines the wireless communication control mode by using the channel hopping and the modulation coding mode level switching, which may include the following steps:
  • the specific manner of adjusting the modulation coding mode level may be various, and then an example is illustrated:
  • the step C1 adjusts the level of the modulation and coding mode, and specifically includes the following steps:
  • the modulation coding mode corresponding to the interval reduces the level of the modulation coding mode actually used by the current service to a preset modulation coding mode level.
  • the transmission error ratio of the current service or the transmission error ratio of the service in the predetermined time period before the current time is greater than 0, indicating that the current service transmission still has an error condition, and further needs to determine the modulation coding mode level actually used by the current service. Whether it is greater than the modulation and coding mode corresponding to the signal-to-noise ratio mapping interval in which the signal-to-noise ratio of the current channel is located, and the modulation and coding mode corresponding to the signal-to-noise ratio mapping interval in which the current channel's signal-to-noise ratio is located is the modulation coding mode level that the current service should use.
  • the level of the modulation and coding mode actually used by the current service is larger than the level of the modulation and coding mode that the current service should use, it indicates that the level of the modulation and coding mode actually used by the current service can be reduced, for example, the level of the modulation and coding mode that should be adopted by the current service or Lower the preset level.
  • the step C1 adjusts the level of the modulation and coding mode, and specifically includes the following steps:
  • the modulation coding mode level actually used by the pre-service is less than or equal to the signal-to-noise ratio of the current channel.
  • the modulation and coding mode corresponding to the mapping interval keeps the level of the modulation and coding mode actually used by the current service unchanged.
  • the modulation coding mode level actually used by the current service is greater than the modulation coding mode corresponding to the signal to noise ratio mapping interval in which the current channel signal to noise ratio is located, if the former service actually adopts The modulation coding mode is less than or equal to the modulation coding mode corresponding to the signal to noise ratio mapping interval of the current channel, that is, the modulation coding mode level actually used by the current service is smaller than the modulation coding mode level that the current service should use.
  • the level of the modulation and coding mode used by the current service is suitable.
  • the level of the modulation and coding mode actually used by the current service can be kept unchanged without excessive adjustment.
  • the step C1 adjusts the level of the modulation and coding mode, and specifically includes the following steps:
  • the transmission error ratio of the current service when the transmission error ratio of the current service is less than or equal to the preset threshold, further determination is made on whether the transmission error ratio of the current service and the transmission error ratio of the service in the predetermined time period before the current time are equal to zero. If the transmission error ratio of the current service and the transmission error ratio of the service within the predetermined time period before the current time are both equal to 0, the current service transmission is ideal, and there is no transmission error, according to the signal to noise ratio mapping interval and the modulation coding mode level. Correspondence relationship, obtain the modulation coding mode level that should be adopted by the current service, and adjust the modulation coding mode level value actually used by the current service to the modulation coding mode level that the current service should adopt.
  • the step C14 adjusts the level of the modulation and coding mode actually used by the current service to the level of the modulation and coding mode that the current service should use, and specifically includes the following steps:
  • the modulation coding mode level actually used by the current service is raised, the modulation coding mode level is adjusted according to the preset hysteresis value.
  • the hysteresis value may be preset, that is, after the signal to noise ratio of the current channel is stabilized for a period of time in the signal to noise ratio mapping interval corresponding to the new modulation coding mode level, The level of the modulation coding method. This hysteresis value can be determined based on stability and throughput. Using the hysteresis value avoids frequent switching of the modulation coding mode level when the signal-to-noise ratio is at a critical value.
  • the wireless communication control method of the present invention may further include the following steps:
  • D1 Obtain a channel scan result, and calculate a channel interference estimation result by using a channel scan result
  • D2 Correct the signal to noise ratio mapping interval corresponding to each level of modulation and coding mode according to the interference estimation result.
  • channel scanning is performed on the available channels to obtain channel scanning results of available channels, and channel interference results are estimated based on channel scanning results of available channels, such as noise, to calculate channel interference estimation results. Adjusting the interval end point value of the signal to noise ratio mapping interval according to the interference estimation result of the channel, so that the signal to noise ratio mapping interval corresponding to each level of the modulation and coding mode can better conform to the actual interference situation of the current channel, thereby being more accurate.
  • Modulation coding mode level For example, if the background noise is large, the level of the modulation and coding mode corresponding to the corresponding SNR interval can be appropriately lowered to ensure better communication effect and stability.
  • step of calculating the interference estimation result of the channel by using the channel scan result in step D1 may specifically include the following steps:
  • the weight used may be a forgetting factor, and the forgetting factor takes a larger value as it is closer to the current time.
  • the description of the present invention by the above embodiment shows that the signal-to-noise ratio of the current channel is estimated according to the historical measurement result of the signal-to-noise ratio, and the transmission error ratio of the current service is obtained, and the wireless communication is determined according to the signal-to-noise ratio of the current channel and the transmission error ratio.
  • the control mode since the wireless communication control mode is jointly determined by combining the transmission error ratio of the current service and the signal-to-noise ratio of the current channel, the transmission error ratio of the current service can directly reflect the data transmission condition, so that the wireless communication control is more accurate. It has high sensitivity and can be applied to ISM unlicensed bands with many bursts of interference.
  • FIG. 3 is a schematic diagram of the principle of service data processing in the wireless communication control method according to an embodiment of the present invention.
  • the front-end antenna After receiving the signal, the front-end antenna performs frequency conversion to obtain a baseband signal, and extracts to a modulation mode to perform demodulation and decoding. Obtain output data, perform packet error rate (PER) statistics on the decoded data, select the modulation coding mode and frequency selection, and refer to channel estimation and channel scanning. If the modulation coding mode level needs to be adjusted, the adjustment result will be adjusted.
  • Input to the adaptive modulation module to adjust the modulation and coding mode level. For the input data, the data can be transmitted according to the adjusted modulation and coding mode level. After the data is beamformed and frequency-converted, the RF is amplified and output through the antenna.
  • PER packet error rate
  • FIG. 4 is a schematic diagram of an application scenario of a method for controlling a wireless communication according to an embodiment of the present invention.
  • the application scenario may include the following content.
  • the SINR is predicted: Where a k is the coefficient of the prediction filter, the coefficient can be fixed coefficient or the real-time adjustment of the coefficient can be realized using an adaptive filter.
  • the minimum SINR x requirement for different MCS x at a defined PERmax is obtained from the baseband performance simulation.
  • x is a value of 0 to m-1 according to the number of modulation coding types of the actual system, and the smaller the value of x, the smaller the corresponding SINR x .
  • the requirements corresponding to MCS 0 , MCS 1 , ..., MCS 3 satisfy the relationship SINR 0 ⁇ SINR 1 ⁇ SINR 2 ⁇ SINR 3 , then at a fixed SINR, MCS x
  • the demodulation performance of -1 is better than MCS x .
  • the throughput of MCS x-1 is less than MCS x .
  • the above simulation results constitute a basic SINR-MCS mapping table.
  • 3db is the hysteresis value of the MCS handover, which avoids the frequent switching of the MCS when the SINR is slightly oscillated at the boundary of the working interval, and reduces the data bandwidth loss caused by the coding mode switching.
  • the background interference average of the working environment of the current channel is obtained according to the channel scanning module.
  • the channel scanning module periodically scans all available channels and stores measurements for n times for each channel.
  • the channel is first culled. First, the maximum value of the scan results of the past n times of each channel is obtained, and then the maximum values are sorted, and the channel corresponding to the peak with the largest value is eliminated according to the peak sorting result. A weighted average estimate of the remaining scan values is then made. First, each available channel is weighted and summed by the forgetting factor according to the time sequence of the interference, and the weighted average estimation of the (n-1) scan values of the yth channel is taken as an example, and the following formula can be adopted. Calculate the background average estimate for the yth channel:
  • Noise y Noise y (n)+ ⁇ Noise y (n-1)+ ⁇ 2 ⁇ Noise y (n-2)+...+ ⁇ k ⁇ Noise y (nk)+...+ ⁇ n- 1 ⁇ Noise y
  • the channel interference degree is more accurate. Thereby more efficient selection of the optimal working channel.
  • the optimal SINR operating interval of the MCS x is corrected by using the background interference average of the current channel, for example, the following method can be used:
  • the interference weighting results of the remaining channels are sorted to obtain the channel with the least interference, for example, by the following formula:
  • step 4 If the PER of the current service exceeds the set threshold, go to step 4, otherwise go to step 5.
  • the MCS level is adjusted according to the SINR-MCS mapping interval, and the algorithm loop ends.
  • the present invention can integrate adaptive frequency hopping and adaptive modulation, reference channel scanning and PER for integrated physical layer adaptive modulation and frequency hopping, so that the ISM burst interference is severely unlicensed.
  • Working wireless communication equipment the adjustment of the MCS is more accurate, and the avoidance of interference is more timely.
  • the combined effect is to enable the device to achieve optimal communication quality with maximum throughput in a noisy environment.
  • the MCS can be adjusted according to the SINR in time and the working channel can be modulated according to the PER in time.
  • the fusion mode can quickly avoid the interference and quickly switch when the SINR decreases.
  • MCS enables the link to quickly recover to a stable transmission state. This eliminates the need for constant retransmission to improve anti-jamming capability and reduce system latency.
  • a wireless communication control apparatus 500 may include: an estimation module 501, an obtaining module 502, and a control module 503, where
  • the estimating module 501 is configured to estimate a signal to noise ratio of the current channel according to a historical measurement result of the signal to noise ratio;
  • the obtaining module 502 is configured to obtain a transmission error ratio of the current service.
  • the control module 503 is configured to determine a wireless communication control mode according to a signal to noise ratio of the current channel and the transmission error ratio.
  • control module 503, as shown in FIG. 5-b includes:
  • the control sub-module 5031 is configured to determine the wireless communication control mode in cooperation using the channel hopping and modulation coding mode level switching.
  • control submodule 5031 includes:
  • the obtaining unit 50311 is configured to obtain, if the transmission error ratio of the current service is greater than a preset threshold, a modulation coding mode level corresponding to a signal to noise ratio mapping interval where the signal to noise ratio of the current channel is located, to obtain a modulation that should be used by the current service. Coding mode level;
  • the first control unit 50312 is configured to reduce the modulation coding mode level actually used by the current service to the current service if the modulation coding mode level that the current service should adopt is smaller than the modulation coding mode level actually used by the current service.
  • control submodule 5031 includes:
  • the second control unit 50313 is configured to: if the modulation coding mode level that the current service should adopt is greater than or equal to the modulation coding mode level actually used by the current service, select a handover modulation coding mode level according to the number of times of channel switching in a predetermined time or Switch channels.
  • the second control unit 50313 is configured to acquire an optimal channel in the currently available channel and switch the channel to the optimal channel if the number of times of channel switching is less than a predetermined threshold within a predetermined time.
  • the second control unit 50313 is specifically configured to separately obtain background environment noise scan results of all available channels, and prepare background noise for each available channel.
  • the scan results of the number of time points are respectively weighted average estimation, and the background interference average of each available channel is obtained; and the channel with the smallest background interference among all available channels is determined according to the background interference average.
  • the weighted average estimated weight is a forgetting factor, and the forgotten factor has a larger value when it is closer to the current time.
  • the second control unit 50313 is further configured to acquire a scan peak in a scan result of each available channel at a predetermined number of time points, and cull the channel corresponding to the partial scan peak according to a preset condition. And select the channel with the smallest background interference average from the remaining available channels as the optimal channel.
  • the second control unit 50313 is configured to: cull the channel corresponding to the preset number of larger scan peaks in the scan peak of the scan result, or reject the scan result A channel corresponding to a scan peak whose peak value is greater than a preset value is scanned.
  • the second control unit 50313 is further configured to: if the number of times of channel switching is greater than or equal to a predetermined threshold within a predetermined time, reduce the modulation and coding mode level to a preset modulation code. Mode level.
  • control submodule 5031 includes;
  • the third control unit 50314 is configured to adjust the modulation and coding mode level if the transmission error ratio is less than or equal to a preset threshold.
  • the third control unit 50314 is specifically configured to: if a transmission error ratio of the current service or a transmission error ratio of a service in a predetermined time period before the current time is greater than 0, and the current service
  • the modulation coding mode level actually used is greater than the modulation coding mode corresponding to the SNR mapping interval of the current channel, and the modulation coding mode level actually used by the current service is reduced to a preset modulation coding mode level.
  • the third control unit 50314 is specifically configured to: if the transmission error ratio of the current service or the transmission error ratio of the service in the predetermined time period before the current time is greater than 0, and the pre-service
  • the modulation coding mode level actually used is less than or equal to the modulation coding mode corresponding to the signal to noise ratio mapping interval of the current channel, and the level of the modulation coding mode actually used by the current service is kept unchanged.
  • the third control unit 50314 is specifically configured to: if a transmission error ratio of the current service and a transmission error ratio of a service within a predetermined time period before the current time If the value is 0, the level of the modulation and coding mode corresponding to the signal to noise ratio mapping interval of the current channel is obtained, and the level of the modulation and coding mode that the current service should use is obtained; and the level of the modulation and coding mode actually used by the current service is obtained. Adjust to the level of modulation and coding mode that the current service should use.
  • the third control unit 50314 is specifically configured to: when the modulation coding mode level actually used by the current service is raised, adjust the modulation coding mode level according to a preset hysteresis value. .
  • the apparatus 500 further includes: an adjustment module 504, configured to acquire a channel scan result, and calculate a channel interference estimation according to the channel scan result. As a result, according to the interference estimation result, the signal to noise ratio mapping intervals corresponding to the modulation coding modes of the respective levels are corrected.
  • the adjusting module 504 is specifically configured to obtain a background environmental noise scan result of the channel and perform a weighted average estimation to obtain an interference estimation result of the channel.
  • the weighted average estimated weight is a forgetting factor, the forgetting factor taking a larger value as it is closer to the current time.
  • the transmission error ratio includes at least one of the following: a packet error rate, a bit error rate, a block error rate, and a frame error rate.
  • the wireless communication control apparatus estimates the signal to noise ratio of the current channel according to the historical measurement result of the signal to noise ratio, and obtains the transmission error ratio of the current service, combined with the signal to noise ratio of the current channel and the transmission error. The ratio determines the wireless communication control mode. Since the transmission error ratio of the current service and the signal-to-noise ratio of the current channel are combined to determine the wireless communication control mode, the transmission error ratio of the current service can directly reflect the data transmission condition, so that the wireless communication mode Communication control is more accurate and sensitive, and it can be applied to ISM unlicensed bands with many bursts of interference.
  • the device embodiments described above are merely illustrative, wherein 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 can be located in one place or distributed to multiple network elements. Some or all of the modules can be selected according to actual needs. The purpose of the solution of this embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, and specifically, one or more communication buses or signal lines can be realized.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, dedicated hardware, dedicated CPU, dedicated memory, dedicated memory, Special components and so on.
  • functions performed by computer programs can be easily implemented with the corresponding hardware, and the specific hardware structure used to implement the same function can be various, such as analog circuits, digital circuits, or dedicated circuits. Circuits, etc.
  • software program implementation is a better implementation in more cases.
  • the technical solution of the present invention which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • U disk mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.
  • a computer device may be A personal computer, server, or network device, etc.

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Abstract

一种无线通信控制方法和装置。其中方法可包括：根据信噪比的历史测量结果估计出当前信道的信噪比；获取当前业务的传输错误比率；结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式。

Description

一种无线通信控制方法和装置 技术领域
本发明实施例涉及通信领域，尤其涉及一种无线通信控制方法和装置。
背景技术
在无线通信系统中，高阶的MCS(Modulation Coding Scheme，调制编码方式)能获得较高的吞吐率及数据带宽，但需要较好的信道条件。若信道条件变差，则需要降低调制编码方式，否则接收机完全无法正常解调，会不断出错而需要重传，此时吞吐率反而会非常低。因此根据信道的变化选择合适的调制编码方式，这对最大程度的利用通信资源非常重要，否则会造成通信资源的浪费。
在进行无线通信控制时，特别在使用工业科学医疗(Industrial ScientificMedical，ISM)非授权频段进行通信时，频谱资源相当的拥挤，有各种类型的设备在此频段上进行无线数据传输，导致干扰信号非常多，并具有突发和不可预测的特性，干扰的突发性造成对信道和信噪比的预测非常不准确。
由于目前常用的自适应调制编码方法调整调制编码方式只采用信噪比信息，这种方法具有滞后性，在突发干扰很多的ISM非授权频段，特别在一些保证超低延时、出错重传次数限制的通信系统中，传统的AMC方法反应不够迅速，会很容易造成吞吐率下降并产生数据错误。
发明内容
本发明实施例提供了一种无线通信控制方法和装置，能够准确进行无线通信方式的控制，适用于突发干扰很多的ISM非授权频段。
一方面，本发明提供一种无线通信控制方法，包括：
根据信噪比的历史测量结果估计出当前信道的信噪比；
获取当前业务的传输错误比率；
结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式。
进一步地，所述结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式，包括协同使用信道跳频和调制编码方式等级的切换确定无线通信控 制方式。
进一步地，所述协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，包括：
若当前业务的传输错误比率大于预设的阈值，获取与所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
当所述当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级时，将所述当前业务实际采用的调制编码方式等级降低到所述当前业务应该采用的调制编码方式等级。
进一步地，所述协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，包括：
当所述当前业务应该采用的调制编码方式等级大于或等于所述当前业务实际采用的调制编码方式等级时，根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道。
进一步地，所述根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道，包括：
若在预定时间内信道切换的次数小于预定阈值，则获取当前可用信道中的最优信道，切换信道至最优信道。
进一步地，所述获取当前可用信道中的最优信道，包括：
分别获取所有可用信道的背景环境噪声扫描结果，对每个可用信道的背景环境噪声预定数目的时刻点的扫描结果分别进行加权平均估计，得到每个可用信道的背景干扰平均值；
根据所述背景干扰平均值确定出所有可用信道中背景干扰最小的信道。
进一步地，所述获取当前可用信道中的最优信道，还包括：
获取每个可用信道在预定数目的时刻点的扫描结果中的扫描峰值，根据预设条件剔除部分扫描峰值对应的信道，并从其余可用信道中选取背景干扰平均值最小的信道作为最优信道。
进一步地，所述根据预设条件剔除部分扫描峰值对应的信道，包括：
剔除所述扫描结果的扫描峰值中预设数量的较大的扫描峰值所对应的信道，或剔除所述扫描结果的扫描峰值中大于预设值的扫描峰值所对应的信道。
进一步地，所述根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道，还包括：
若在预定时间内信道切换的次数大于或等于预定阈值，则将所述调制编码方式等级降低到预设的调制编码方式等级。
进一步地，所述协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，包括：
若所述传输错误比率小于或等于预设的阈值，调整所述调制编码方式等级。
进一步地，所述调整所述调制编码方式等级，包括：
若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且若当前业务实际采用的调制编码方式等级大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，将所述当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级。
进一步地，所述调整所述调制编码方式等级，包括：
若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且当前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，保持所述当前业务实际采用的调制编码方式等级不变。
进一步地，所述调整所述调制编码方式等级，包括：
若所述当前业务的传输错误比率及当前时刻之前的预定时间段内业务的传输错误比率均等于0，
获取所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
将所述当前业务实际采用的调制编码方式等级调整到所述当前业务应该采用的调制编码方式等级。
进一步地，所述将所述当前业务实际采用的调制编码方式等级调整到所述当前业务应该采用的调制编码方式等级，包括：
当将所述当前业务实际采用的调制编码方式等级上调时，根据预设的回滞值上调所述调制编码方式等级。
进一步地，所述方法还包括：
获取信道扫描结果，并结合所述信道扫描结果计算信道的干扰估计结果；
根据所述干扰估计结果，对各个等级的调制编码方式分别对应的信噪比映射区间进行修正。
进一步地，其特征在于，所述结合所述信道扫描结果计算信道的干扰估计结果，包括：
获取所述信道的背景环境噪声扫描结果进行加权平均估计，得到所述信道的干扰估计结果。
进一步地，所述加权平均估计的权重为遗忘因子，所述遗忘因子在越靠近当前时间时取值越大。
进一步地，所述传输错误比率，包括以下内容中的至少一种：误包率、误码率、误块率、误帧率。
另，本发明还提供一种无线通信控制装置，包括：
估计模块，用于根据信噪比的历史测量结果估计出当前信道的信噪比；
获取模块，用于获取当前业务的传输错误比率；
控制模块，用于结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式。
进一步地，所述控制模块，包括控制子模块，用于协同使用信道跳频和调
制编码方式等级的切换确定无线通信控制方式。
进一步地，所述控制子模块，包括：
获取单元，用于若当前业务的传输错误比率大于预设的阈值，获取与所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
第一控制单元，用于若所述当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级，将所述当前业务实际采用的调制编码方式等级降低到所述当前业务应该采用的调制编码方式等级。
进一步地，所述控制子模块，还包括：第二控制单元，用于若所述当前业务应该采用的调制编码方式等级大于或等于所述当前业务实际采用的调制编码方式等级，根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道。
进一步地，所述第二控制单元，具体用于若在预定时间内信道切换的次数 小于预定阈值，则获取当前可用信道中的最优信道，切换信道至最优信道。
进一步地，所述第二控制单元，具体用于分别获取所有可用信道的背景环境噪声扫描结果，对每个可用信道的背景环境噪声预定数目的时刻点的扫描结果分别进行加权平均估计，得到每个可用信道的背景干扰平均值；根据所述背景干扰平均值确定出所有可用信道中背景干扰最小的信道。
进一步地，所述第二控制单元，还用于获取每个可用信道在预定数目的时刻点的扫描结果中的扫描峰值，根据预设条件剔除部分扫描峰值对应的信道，并从其余可用信道中选取背景干扰平均值最小的信道作为最优信道。
进一步地，所述第二控制单元，具体用于剔除所述扫描结果的扫描峰值中预设数量的较大的扫描峰值所对应的信道，或剔除所述扫描结果的扫描峰值中大于预设值的扫描峰值所对应的信道。
进一步地，所述第二控制单元，还用于若在预定时间内信道切换的次数大于或等于预定阈值，则将所述调制编码方式等级降低到预设的调制编码方式等级。
进一步地，所述控制子模块，包括第三控制单元，用于若所述传输错误比率小于或等于预设的阈值，调整所述调制编码方式等级。
进一步地，所述第三控制单元，具体用于若所述当前业务的传输错误比率或当前时刻之前的预定时间段内业务的传输错误比率大于0，且若当前业务实际采用的调制编码方式等级大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，将所述当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级。
进一步地，所述第三控制单元，具体用于若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且当前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，保持所述当前业务实际采用的调制编码方式等级不变。
进一步地，所述第三控制单元，具体用于若所述当前业务的传输错误比率及当前时刻之前的预定时间段内业务的传输错误比率均等于0，获取所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；将所述当前业务实际采用的调制编码方式等级 调整到所述当前业务应该采用的调制编码方式等级。
进一步地，所述第三控制单元，具体用于当将所述当前业务实际采用的调制编码方式等级上调时，根据预设的回滞值上调所述调制编码方式等级。
进一步地，所述装置还包括：调整模块，用于获取信道扫描结果，并结合所述信道扫描结果计算信道的干扰估计结果；根据所述干扰估计结果，对各个等级的调制编码方式分别对应的信噪比映射区间进行修正。
进一步地，所述调整模块，具体用于获取所述信道的背景环境噪声扫描结果进行加权平均估计，得到所述信道的干扰估计结果。
进一步地，所述加权平均估计的权重为遗忘因子，所述遗忘因子在越靠近当前时间时取值越大。
进一步地，所述传输错误比率，包括以下内容中的至少一种：误包率、误码率、误块率、误帧率。
从以上技术方案可以看出，本发明实施例具有以下优点：
本发明实施例中，根据信噪比的历史测量结果估计出当前信道的信噪比，以及获取当前业务的传输错误比率，结合当前信道的信噪比及传输错误比率确定无线通信控制方式，由于将当前业务的传输错误比率和当前信道的信噪比相结合来共同确定无线通信控制方式，当前业务的传输错误比率可直观反映出数据的传输情况，使得对无线通信控制更加精确，灵敏度很高，能够适用于突发干扰很多的ISM非授权频段。
附图说明
图1为本发明实施例提供的一种无线通信控制方法的流程方框示意图；
图2为本发明实施例提供的另一种无线通信控制方法的流程方框示意图；
图3为本发明实施例中无线通信控制方法中业务数据处理的原理示意图；
图4为本发明实施例提供的无线通信控制方法的一个应用场景示意图；
图5-a为本发明实施例提供的一种无线通信控制装置的组成结构示意图；
图5-b为本发明实施例提供的一种控制模块的组成结构示意图；
图5-c为本发明实施例提供的一种控制子模块的组成结构示意图；
图5-d为本发明实施例提供的另一种控制子模块的组成结构示意图；
图5-e为本发明实施例提供的另一种控制子模块的组成结构示意图；
图5-f为本发明实施例提供的另一种无线通信控制装置的组成结构示意图。
具体实施方式
本发明实施例提供了一种无线通信控制方法和装置，能够准确进行无线通信方式的控制，适用于突发干扰很多的ISM非授权频段。
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，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，下面所描述的实施例仅仅是本发明一部分实施例，而非全部实施例。基于本发明中的实施例，本领域的技术人员所获得的所有其他实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本发明的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。
以下分别进行详细说明。
本发明无线通信控制方法的一个实施例，可应用于无线通信中，请参阅图1所示，无线通信方法，可以包括如下步骤：
101、根据信噪比的历史测量结果估计出当前信道的信噪比。
在本发明实施例中，为了能够对信道的数据传输情况做出预测，以对所有可用信道中的一个信道进行控制为例，首先获取到当前信道在当前时刻之前记录的信噪比测量情况，即获取到信噪比的历史测量结果，根据信噪比的历史测量结果估计出当前信道的信噪比。
例如，根据信道估计器得到在此之前的多个SINR，并根据过去p个SINR的测量结果进行SINR的预测。通过如下公式：
Figure PCTCN2015075546-appb-000001
来计算。其中，ak为预测滤波器的系数，该系数可采用固定系数或者使用自适应滤波器实现系数的实时调整。P为信噪比的采样点个数，P的取值可根据扫频的周期和干扰 的频度来确定。
102、获取当前业务的传输错误比率。
在进行无线通信控制之前，除了需要获取到当前信道的信噪比，还可以获取到当前业务传输产生的传输错误比率，即对当前正在进行的业务传输进行统计，以得到其业务传输的错误情况，其中，衡量业务传输的错误情况的依据可采用传输错误比率，该传输错误比率可通过计算一段时间内业务数据被精确传输的比率得到，传输错误比率，可包括以下内容中的至少一种：误包率、误码率、误块率、误帧率。当然在实际的无线通信系统中还可以结合数据的划分单位对传输错误比率做出具体的参数描述。
103、结合当前信道的信噪比及传输错误比率确定无线通信控制方式。
在前述步骤中分别获取到当前信道的信噪比和当前业务的传输错误比率之后，可以结合当前信道的信噪比以及传输错误比率对当前信道和当前业务的各项性能有精确的判断，从而可结合当前信道的信噪比及传输错误比率确定无线通信控制方式，无线通信控制方式可包括在无线通信中的多种控制内容，例如可包括信道的切换和调制编码的选择等，具体需要结合应用场景来设定。
通过以上实施例对本发明的描述可知，根据信噪比的历史测量结果估计出当前信道的信噪比，以及获取当前业务的传输错误比率，结合当前信道的信噪比及传输错误比率确定无线通信控制方式，由于将当前业务的传输错误比率和当前信道的信噪比相结合来共同确定无线通信控制方式，当前业务的传输错误比率可直观反映出数据的传输情况，使得对无线通信控制更加精确，灵敏度很高，能够适用于突发干扰很多的ISM非授权频段。
接下来请参阅本发明的另一个实施例，请参阅如图2所示，具体可包括如下步骤：
201、根据信噪比的历史测量结果估计出当前信道的信噪比。
202、获取当前业务的传输错误比率。
203、结合当前信道的信噪比及所述传输错误比率，协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式。
其中步骤201和步骤202与前述实施例中步骤101、102相类似。
步骤203中，前述获取到当前信道的信噪比和当前业务的传输错误比率，使用信道跳频跳频和调制编码方式等级的切换来确定无线通信控制方式，其中 信道跳频是根据当前信道的信噪比和当前业务的传输错误比率来确定是否执行对当前信道的跳频操作以及需要切换到的目标信道，具体可以结合应用场景来确定在当前信道的信噪比满足什么样的条件和传输错误比率满足的什么样的阈值关系时执行信道跳频。调制编码方式等级的切换也可以结合当前信道的信噪比和当前业务的传输错误比率来确定可采用哪个等级的调制编码方式。由于当前业务的传输错误比率可直观反映出数据的传输情况，使得在执行信道跳频和调制编码方式等级切换时更加精确，灵敏度很高，能够适用于突发干扰很多的ISM非授权频段。
在本发明的一些实施例中，步骤203协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，具体可包括如下步骤：
A1、若当前业务的传输错误比率大于预设的阈值，获取与当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
A2、若当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级，将当前业务实际采用的调制编码方式等级降低到当前业务应该采用的调制编码方式等级。
具体的，针对各个业务的传输错误比率可设定阈值，判断出当前业务的传输错误比率是否大于预设的阈值，在满足当前业务的传输错误比率大于预设的阈值时可执行步骤A1，信噪比映射区间为信噪比取值的一个大小区间，该区间包括两个端点值，依据端点值的不同可以将信噪比的所有取值划分到多个区间内，并且每个信噪比映射区间分别对应有一个调制编码方式等级，即MCS，可以理解的是，不同的信噪比映射区间对应到的是不同的MCS等级，调制编码方式的每个等级可以对应一个信噪比映射区间。通过信噪比映射区间和MCS等级的对应关系，可直观确定在当前信道的信噪比情况下可采用的MCS等级，举例说明，SINR共有3个端点值，分别为：SINR1、SINR2、SINR3，则SINR1、SINR2、SINR3可以将整个SINR映射区间划分为4个部分，每个部分都对应有一个MCS等级，对应地，MCS可被划分为4个相应的等级，分别为：MCS0、MCS1、MCS2、MCS3，请参阅如图下表1所示，为MCS等级与SINR映射区间的对应关系表格：
表1
Figure PCTCN2015075546-appb-000002
表1中每个MCS等级都对应有一个MCS区间，每个MCS区间都包括左右两个端点值，通过SINR映射区间和MCS等级的对应关系，可以获取到当前业务应该采用的MCS等级。在本实施方式中，若SINR正好为两个区间之间的临界值，则选取所述SINR对应的两个MCS等级中较低的MCS等级。当然，在其他事实方式中，根据设定条件，也可以选取较高的MCS等级。
步骤A1中，若当前业务的传输错误比率大于预设阈值，说明当前业务的传输情况较差，产生了较多错误传输的情况，该预设的阈值可结合具体情况来设定，通过当前信道的信噪比可以判断出该信噪比落入的信噪比映射区间，再通过信噪比映射区间和调制编码方式等级的对应关系，可以得到对当前业务而言应该采用的调制编码方式等级。这个当前业务应该采用的调制编码方式等级是指根据当前信道的信噪比来确定的调制编码方式等级理论值，当前业务实际采用的调制编码方式等级是指当前业真实使用的调制编码方式等级实际值，这两个值可能不同。执行步骤A2之前仍需判断当前业务应该采用的调制编码方式等级与当前业务实际采用的调制编码方式等级之间的大小关系，在当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级的情况下，执行步骤A2。对当前业务真实采用的调制编码方式等级进行切换，当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级，则说明当前业务真实采用的调制编码方式等级过大，需要调低，故将当前业务实际采用的调制编码方式等级调低到当前业务应该采用的调制编码方式等级。
举例说明如下，根据传输业务类型决定设定的阈值大小，比如传输视频信 号，如果传输错误比率(例如误码率)太高，超过了预设的阈值，此时视频会花或者卡得厉害，这时候就需要降低当前业务采用的调制编码方式等级。
通过步骤A1和A2中的说明可知，传输错误比率自适应的MCS切换，可实现在制定最大误码率的限制下最大化系统吞吐率。
在本发明的另一些实施例中，步骤203协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，具体可包括如下步骤：
B1、若当前业务应该采用的调制编码方式等级大于或等于当前业务实际采用的调制编码方式等级，根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道。
具体的，针对各个业务的传输错误比率可设定阈值，判断出当前业务的传输错误比率是否大于预设的阈值，在满足当前业务的传输错误比率大于预设的阈值时还需要进一步判断当前业务应该采用的调制编码方式等级与当前业务实际采用的调制编码方式等级的大小关系，在当前业务应该采用的调制编码方式等级大于或等于当前业务实际采用的调制编码方式等级的情况下，获取预定时间内信道切换的次数，根据这个信道切换的次数来确定需要做调制编码方式等级的切换还是对当前信道进行切换，即是否要选择调试方式还是选择跳频。例如在当前时刻之间的一个时间段(例如2秒)内系统已经完成的信道切换次数达到了2次以上，则说明当前业务实际采用的调制编码方式等级需要调整，若在当前时刻之前的一个时间段(例如2秒)内系统已经完成的信道切换次数没有超过2次，则可以进行切换信道。可以理解，所述预定时间可以为1秒、3秒、4秒等，且所述切换次数也可以为1、3、4等其他次数。
在本发明的一些实施例中，步骤B1根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道，具体可以包括如下步骤：
B11、若在预定时间内信道切换的次数小于预定阈值，则获取当前可用信道中的最优信道，切换信道至最优信道。
也就是说，在预定时间内信道切换的次数很少，则可以对当前信道进行信道切换，从当前可用的所有信道中选择出最优信道，然后将当前信道切换到最优信道。其中，当前可用信道中的最优信道指的是当前可用的所有信道中信道质量最好的信道，将当前业务采用的信道切换到最优信道，可以保证当前业务在最优信道中进行传输，提高业务处理的吞吐率。
进一步的，步骤B11中获取当前可用信道中的最优信道，具体可以包括如下步骤：
B111、分别获取所有可用信道的背景环境噪声扫描结果，对每个可用信道的背景环境噪声预定数目的时刻点的扫描结果分别进行加权平均估计，得到每个可用信道的背景干扰平均值；
B112、根据背景干扰平均值确定出所有可用信道中背景干扰最小的信道。
其中，步骤B111中对所有可用信道都进行信道扫描，对每个信道的背景功率进行扫描，得到每个信道的背景环境噪声扫描结果，然后对每个可用信道选取预定数目的时刻点的扫描结果进行加权平均估计，得到每个可用信道的背景干扰平均值，该背景干扰平均值可以直接衡量出每个可用信道的背景干扰情况，然后执行步骤B112，选择背景干扰最小的信道就是确定出的最优信道。
其中，通过加权平均估计计算背景干扰平均值时使用权重因子为遗忘因子，即越靠近当前时间的权重值越大。
在本发明的另一些实施例中，步骤B11除了执行步骤B111和步骤B112之外，步骤B11获取当前可用信道中的最优信道，还可以包括如下步骤：
B113、获取每个可用信道在预定数目的时刻点的扫描结果中的扫描峰值，根据预设条件剔除部分扫描峰值对应的信道，并从其余可用信道中选取背景干扰平均值最小的信道作为最优信道。所述预定数目可以为5次、4次或其数目。
也就是说，为了更准确的衡量每个可用信道的背景干扰情况，还需要对扫描峰值进行剔除，以保证加扰平均估计的可靠性，剔除扫描峰值可根据预设条件来进行剔除，没有被剔除到的扫描值参与到加权平均估计的计算，然后选择出背景干扰最小的信道，即最小干扰信道，作为最优信道。
具体的，步骤B113中根据预设条件剔除部分扫描峰值对应的信道，包括：
剔除所述扫描结果的扫描峰值中预设数量的较大的扫描峰值所对应的信道，或剔除所述扫描结果的扫描峰值中大于预设值的扫描峰值所对应的信道。
也就是说，预设的剔除条件可以设置为剔除预设数量的扫描值对应的信道，或者剔除扫描值超过预设值的扫描值对应的信道。例如预设数量可以2，那么就需要剔除扫描峰值最大的2个扫描峰值对应的信道，又如设置一个上限，只要超过这个上限的扫描峰值对应的信道都进行剔除。可以理解的是，设置的具体剔除条件还可以结合具体的应用场景来设定，此处只做举例说明，不 作为对本发明的限制。
在本发明的另一些实施例中，步骤B1根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道，具体可以包括如下步骤：
B12、若在预定时间内信道切换的次数大于或等于预定阈值，则将调制编码方式等级降低到预设的调制编码方式等级。
也就是说，在预定时间内信道切换的次数很多，那么则无需再进行信道切换，以减少频繁切换信道，此时需要将当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级，例如可以强制将当前业务实际采用的调制编码方式等级降低一个或两个等预设等级。
在本发明的另一些实施例中，步骤203协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，具体可包括如下步骤：
C1、若传输错误比率小于或等于预设的阈值，调整调制编码方式等级。
具体的，在实际应用中，传输错误比率小于或等于预设的阈值时调整调制编码方式等级的具体方式可以有多种，接下来进行举例说明：
在本发明的一些实施例中，步骤C1调整调制编码方式等级，具体可以包括如下步骤：
C11、若当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且当前业务实际采用的调制编码方式等级大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，将当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级。
具体的，当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，说明当前业务的传输仍存在错误情况，进一步的需要判断当前业务实际采用的调制编码方式等级是否大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，当前信道的信噪比所在的信噪比映射区间对应的调制编码方式即当前业务应该采用的调制编码方式等级，若当前业务实际采用的调制编码方式等级比当前业务应该采用的调制编码方式等级要大，说明可以降低当前业务实际采用的调制编码方式等级，如可以降低至当前业务应该采用的调制编码方式等级或降低预设等级数。
在本发明的一些实施例中，步骤C1调整调制编码方式等级，具体可以包括如下步骤：
C12、若当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，保持当前业务实际采用的调制编码方式等级不变。
同样的，在此处的实施例中，也需要判断当前业务实际采用的调制编码方式等级是否大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，若前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，即当前业务实际采用的调制编码方式等级比当前业务应该采用的调制编码方式等级要小，说明此时当前业务采用的调制编码方式等级是合适的，此时就可以保持当前业务实际采用的调制编码方式等级不变，而无需做过度调整。
在本发明的一些实施例中，步骤C1调整调制编码方式等级，具体可以包括如下步骤：
C13、若当前业务的传输错误比率及当前时刻之前的预定时间段内业务的传输错误比率均等于0，获取当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
C14、将当前业务实际采用的调制编码方式等级调整到当前业务应该采用的调制编码方式等级。
其中，在当前业务的传输错误比率小于或等于预设的阈值时，对当前业务的传输错误比率和在当前时刻之前的预定时间段内业务的传输错误比率是否等于0做出进一步的判断。若当前业务的传输错误比率和当前时刻之前的预定时间段内业务的传输错误比率均等于0，说明当前业务的传输很理想，没有传输错误的情况，根据信噪比映射区间与调制编码方式等级的对应关系，获取到当前业务应该采用的调制编码方式等级，从而将当前业务实际采用的调制编码方式等级值调整到当前业务应该采用的调制编码方式等级。
在本发明的另一些实施例中，步骤C14将当前业务实际采用的调制编码方式等级调整到当前业务应该采用的调制编码方式等级，具体可包括如下步骤：
当将当前业务实际采用的调制编码方式等级上调时，根据预设的回滞值上调调制编码方式等级。
其中，为了避免对调制编码方式等级的频繁调整，可预先设定回滞值，即在当前信道的信噪比在新的调制编码方式等级对应的信噪比映射区间稳定一段时间后，再上调调制编码方式的等级。该回滞值可以根据稳定性和吞吐率确定。使用回滞值可避免当信噪比处于临界值时造成对调制编码方式等级的频繁切换。
接下来请参阅本发明的另一个实施例，在本发明无线通信控制方法执行前述任一实施例中记载的步骤之外，还可以包括如下步骤：
D1、获取信道扫描结果，并结合信道扫描结果计算信道的干扰估计结果；
D2、根据干扰估计结果，对各个等级的调制编码方式分别对应的信噪比映射区间进行修正。
首先对可用信道进行信道扫描，得到可用信道的信道扫描结果，基于可用信道的信道扫描结果，如噪声，对信道的干扰情况进行估计，从而计算出信道的干扰估计结果。根据信道的干扰估计结果对信噪比映射区间进行区间端点值的调整，使得各个等级的调制编码方式对应的信噪比映射区间能够更贴合当前信道的实际干扰情况，从而可以对应出更加准确的调制编码方式等级。如，若背景噪声较大，可以适当将相应信噪比区间对应的调制编码方式等级调低，以保证较好的通信效果及稳定性。
进一步的，步骤D1中结合信道扫描结果计算信道的干扰估计结果，具体可以包括如下步骤：
获取信道的背景环境噪声扫描结果进行加权平均估计，得到信道的干扰估计结果。
优选的，在对信道的背景环境噪声扫描结果进行加权平均估计时，采用的权重可以是遗忘因子，遗忘因子在越靠近当前时间时取值越大。
通过以上实施例对本发明的描述可知，根据信噪比的历史测量结果估计出当前信道的信噪比，以及获取当前业务的传输错误比率，结合当前信道的信噪比及传输错误比率确定无线通信控制方式，由于将当前业务的传输错误比率和当前信道的信噪比相结合来共同确定无线通信控制方式，当前业务的传输错误比率可直观反映出数据的传输情况，使得对无线通信控制更加精确，灵敏度很高，能够适用于突发干扰很多的ISM非授权频段。
为便于更好的理解和实施本发明实施例的上述方案，下面举例相应的应用场景来进行具体说明。
请参阅如图3所示，为本发明实施例中无线通信控制方法中业务数据处理的原理示意图，前端天线接收到信号之后先进行变频，得到基带信号，提取到调制方式后进行解调、解码，得到输出数据，对解码后的数据进行误包率(Packet Error Rate，PER)统计，调制编码方式的选择和频率选择可参考信道估计和信道扫描，若需要调整调制编码方式等级，将调整结果输入到自适应调制模块进行调制编码方式等级的调整，对于输入数据就可以按照调整后的调制编码方式等级来传输数据，数据经过波束成形和变频后进行射频放大，通过天线输出。
由图3可知，自适应调制编码的决策不仅依赖信道估计的结果，同时依赖信道扫描结果、出错重传融合前后的PER，综合以上输入进行逻辑判断得到当前应当使用的MCS，以及同时根据信道扫描结果对信道进行排序，结合自适应调制编码方式进行自适应跳频或者动态频率选择。请参阅图4，为本发明实施例提供的无线通信控制方法的一个应用场景示意图，该应用场景下可包括如下内容。
自适应调制与跳频的算法执行分为如下步骤：
1、从信道估计模块中得到当前信道的信噪比的历史测量结果，并估计得到当前信道的信噪比，从PER统计模块中得到当前业务的PER；从信道扫描模块中获取各个可用信道在过去的n个时刻的背景干扰扫描结果，并计算得到各通道的干扰估计结果。
根据信道估计器得到的SINR，并根据过去p个SINR的测量结果进行SINR的预测：
Figure PCTCN2015075546-appb-000003
其中ak为预测滤波器的系数，系数可采用固定系数或者使用自适应滤波器实现系数的实时调整。
根据基带性能仿真得到在限定PERmax下不同MCSx的最小SINRx要求。其中，x根据实际系统的调制编码种类数m取值0～m-1，同时x取值越小，对应的SINRx越小。例如在一个m＝4的通信系统系统中，MCS0,MCS1,...,MCS3对应的要求满足关系SINR0<SINR1<SINR2<SINR3,那么在固定的SINR下，MCSx-1的解调性能优于MCSx。但是，MCSx-1的吞吐率小于MCSx。上述仿真结果构成基本的SINR-MCS 映射表。对该表按照如下映射得到MCSx对应的SINR映射区间，MCS和SINR的对应关系可满足：(MCSx_L,MCSx_H)＝(SINRx,SINRx+1+3)。其中3db为MCS切换的回滞值，避免SINR在工作区间边界小幅度摆动时MCS的频繁切换，减少编码方式切换期间带来的数据带宽损失。MCS对应的工作SINR区间还存在边界情况：(MCS0_L,MCS0_H)＝(-∞,SINR1+3)，(MCSm-1_L,MCSm-1_H)＝(SINRm-1,+∞)。MCS根据SINR的切换逻辑为：假设当前工作在MCSx，估计得到的信噪比为SINR，如果SINR+回滞值≥MCSχ_H，切换到MCSx+1；如果SINR<MCSx_L，切换到MCSx-1；否则保持MCSx不变。通过自适应的MCS切换，可实现在制定最大误码率的限制下最大化的系统吞吐率。
根据信道扫描模块得到当前信道的工作环境的背景干扰平均值。信道扫描模块周期性对所有可用信道进行扫描，对每个信道都存贮n个时刻的测量值。先对信道进行峰值剔除。首先获取每个通道过去n个时刻的扫描结果的最大值，然后对这些最大值进行排序，根据峰值排序结果剔除值最大的峰值所对应的信道。之后对余下的扫描值进行加权平均估计。首先对每个可用信道按照干扰的时间顺序，采用遗忘因子对历史扫描结果进行加权求和，以对第y个信道的(n-1)个扫描值进行加权平均估计为例，可通过如下公式计算第y个信道的背景平均估计值：
Noisey＝Noisey(n)+ρ·Noisey(n-1)+ρ2·Noisey(n-2)+...+ρk·Noisey(n-k)+...+ρn-1·Noisey
其中，y＝0,1,2,...,k，y的取值取不同表示不同的信道，ρ为遗忘因子。采用该算法得到所有可用信道的的背景干扰平均值。
采用峰值结合加权均值排序的方法，对信道的干扰度评估更为准确。从而更有效的选取最优工作通道。
2、根据当前信道的背景干扰平均值，对各MCS的SINR映射区间进行修正。
利用当前信道的背景干扰平均值对MCSx的最佳SINR工作区间进行修正，例如可采用如下方式：
(MCSx_L,MCSx_H)→(MCSx_L+(Noisey-(-95)),MCSx_H+(Noisey-(-95)))
假设修正的背景能量起点为-95dBm。若扫描得到的背景干扰的平均值为-90dBm，则修正量为(-90-(-95))dB＝5dB。那么MCS和SINR映射区间修正后存在如下关系：(MCSx_L,MCSx_H)＝(SINRx+5,SINRx+1+3+5)。若背景干扰 平均值小于等于起始点-95dBm，则不做区间修正。
获取到每个可用信道的背景干扰平均值之后，对上述剩余信道的干扰加权结果进行排序，得到干扰最小的信道，例如可通过如下公式：
Noisemin＝Min(Noisey),y＝0,1,2,...,k
则，Noisemin所在的信道作为下一个备选的最优信道。
3、如果当前业务的PER超过设定阈值，则执行步骤4，否则执行步骤5。
4、根据SINR-MCS映射区间，结合当前信道的信噪比计算当前业务应当工作的MCSc。如果当前正在使用MCS>MCSc,那么降低MCS到MCSc。否则，判断过去时刻的信道切换次数。如果当前时刻之前2秒内有小于2次(例如只有0次或1次)的信道切换，则根据背景干扰平均值将当前信道切换到Noisemin对应的信道；如果当前时刻之前2秒内有两次及以上的信道切换，则强制将MCS降低一个等级。至此，算法循环结束。
5、如果当前的PER大于0，那么根据SINR-MCS区间映射，当SINR要求MCS等级下降时，下降MCS等级；当SINR要求MCS上升时，保持MCS等级不变。如果当前PER等于0，且过去一段时间的PER为0，则根据SINR-MCS映射区间调整MCS等级，至此算法循环结束。
通过以上举例对本发明的描述可知，本发明可融合自适应跳频和自适应调制，参考信道扫描及PER进行综合的物理层自适应调制及跳频，使得在ISM突发干扰严重的非授权频段工作的无线通信设备，对MCS的调整更为准确，对干扰的回避更为及时。综合的效果是使得设备在干扰的环境获得最大吞吐率的最优通信质量。在突发干扰出现时，能根据SINR及时的调整MCS和根据PER及时调制工作通道，特别在当前通道干扰没有被检测到时，融合的方式能快速的避开干扰，同时在SINR下降时快速切换MCS，使链路快速得以快速恢复至稳定传输状态。如此使得不需要不断的通过重传来提高抗干扰能力，降低系统延时。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
为便于更好的实施本发明实施例的上述方案，下面还提供用于实施上述方案的相关装置。
请参阅图5-a所示，本发明实施例提供的一种无线通信控制装置500，可以包括：估计模块501、获取模块502、控制模块503，其中，
估计模块501，用于根据信噪比的历史测量结果估计出当前信道的信噪比；
获取模块502，用于获取当前业务的传输错误比率；
控制模块503，用于结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式。
在本发明的一些实施例中，所述控制模块503，如图5-b所示，包括：
控制子模块5031，用于协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式。
在本发明的一些实施例中，所述控制子模块5031，请参阅如图5-c所示，包括：
获取单元50311，用于若当前业务的传输错误比率大于预设的阈值，获取与所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
第一控制单元50312，用于若所述当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级，将所述当前业务实际采用的调制编码方式等级降低到所述当前业务应该采用的调制编码方式等级。
在本发明的一些实施例中，所述控制子模块5031，请参阅如图5-d所示，包括：
第二控制单元50313，用于若所述当前业务应该采用的调制编码方式等级大于或等于所述当前业务实际采用的调制编码方式等级，根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道。
在本发明的一些实施例中，所述第二控制单元50313，具体用于若在预定时间内信道切换的次数小于预定阈值，则获取当前可用信道中的最优信道，切换信道至最优信道。
在本发明的一些实施例中，所述第二控制单元50313，具体用于分别获取所有可用信道的背景环境噪声扫描结果，对每个可用信道的背景环境噪声预定 数目的时刻点的扫描结果分别进行加权平均估计，得到每个可用信道的背景干扰平均值；根据所述背景干扰平均值确定出所有可用信道中背景干扰最小的信道。其中，所述加权平均估计的权重为遗忘因子，所述遗忘因子在越靠近当前时间时取值越大。
在本发明的一些实施例中，所述第二控制单元50313，还用于获取每个可用信道在预定数目的时刻点的扫描结果中的扫描峰值，根据预设条件剔除部分扫描峰值对应的信道，并从其余可用信道中选取背景干扰平均值最小的信道作为最优信道。
在本发明的一些实施例中，所述第二控制单元50313，具体用于剔除所述扫描结果的扫描峰值中预设数量的较大的扫描峰值所对应的信道，或剔除所述扫描结果的扫描峰值中大于预设值的扫描峰值所对应的信道。
在本发明的一些实施例中，所述第二控制单元50313，还用于若在预定时间内信道切换的次数大于或等于预定阈值，则将所述调制编码方式等级降低到预设的调制编码方式等级。
在本发明的一些实施例中，所述控制子模块5031，请参参阅如图5-e所示，包括；
第三控制单元50314，用于若所述传输错误比率小于或等于预设的阈值，调整所述调制编码方式等级。
在本发明的一些实施例中，所述第三控制单元50314，具体用于若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且当前业务实际采用的调制编码方式等级大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，将所述当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级。
在本发明的一些实施例中，所述第三控制单元50314，具体用于若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，保持所述当前业务实际采用的调制编码方式等级不变。
在本发明的一些实施例中，所述第三控制单元50314，具体用于若所述当前业务的传输错误比率及当前时刻之前的预定时间段内业务的传输错误比率 均等于0，获取所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；将所述当前业务实际采用的调制编码方式等级调整到所述当前业务应该采用的调制编码方式等级。
在本发明的一些实施例中，所述第三控制单元50314，具体用于当将所述当前业务实际采用的调制编码方式等级上调时，根据预设的回滞值上调所述调制编码方式等级。
在本发明的一些实施例中，所述装置500，请参阅如图5-f所示，还包括：调整模块504，用于获取信道扫描结果，并结合所述信道扫描结果计算信道的干扰估计结果；根据所述干扰估计结果，对各个等级的调制编码方式分别对应的信噪比映射区间进行修正。
在本发明的一些实施例中，所述调整模块504，具体用于获取所述信道的背景环境噪声扫描结果进行加权平均估计，得到所述信道的干扰估计结果。
在本发明的一些实施例中，所述加权平均估计的权重为遗忘因子，所述遗忘因子在越靠近当前时间时取值越大。
在本发明的一些实施例中，所述传输错误比率，包括以下内容中的至少一种：误包率、误码率、误块率、误帧率。
需要说明的是，上述装置各模块/单元之间的信息交互、执行过程等内容，由于与本发明方法实施例基于同一构思，其带来的技术效果与本发明方法实施例相同，具体内容可参见本发明前述所示的方法实施例中的叙述，此处不再赘述。
综上可知，本发明实施例提供的无线通信控制装置根据信噪比的历史测量结果估计出当前信道的信噪比，以及获取当前业务的传输错误比率，结合当前信道的信噪比及传输错误比率确定无线通信控制方式，由于将当前业务的传输错误比率和当前信道的信噪比相结合来共同确定无线通信控制方式，当前业务的传输错误比率可直观反映出数据的传输情况，使得对无线通信控制更加精确，灵敏度很高，能够适用于突发干扰很多的ISM非授权频段。
另外需说明的是，以上所描述的装置实施例仅仅是示意性的，其中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模块来实现 本实施例方案的目的。另外，本发明提供的装置实施例附图中，模块之间的连接关系表示它们之间具有通信连接，具体可以实现为一条或多条通信总线或信号线。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本发明可借助软件加必需的通用硬件的方式来实现，当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现。一般情况下，凡由计算机程序完成的功能都可以很容易地用相应的硬件来实现，而且，用来实现同一功能的具体硬件结构也可以是多种多样的，例如模拟电路、数字电路或专用电路等。但是，对本发明而言更多情况下软件程序实现是更佳的实施方式。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可读取的存储介质中，如计算机的软盘，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，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的方法。
综上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照上述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对上述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (36)

  1. 一种无线通信控制方法，其特征在于，包括：
    根据信噪比的历史测量结果估计出当前信道的信噪比；
    获取当前业务的传输错误比率；
    结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式。
  2. 根据权利要求1所述的方法，其特征在于，所述结合当前信道的信噪比及所述传输错误比率确定无线通信控制方式，包括：
    协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式。
  3. 根据权利要求2所述的方法，其特征在于，所述协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，包括：
    若当前业务的传输错误比率大于预设的阈值，获取与所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
    当所述当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级时，将所述当前业务实际采用的调制编码方式等级降低到所述当前业务应该采用的调制编码方式等级。
  4. 根据权利要求3所述的方法，其特征在于，所述协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，包括：
    当所述当前业务应该采用的调制编码方式等级大于或等于所述当前业务实际采用的调制编码方式等级时，根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道。
  5. 根据权利要求4所述的方法，其特征在于，所述根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道，包括：
    若在预定时间内信道切换的次数小于预定阈值，则获取当前可用信道中的最优信道，切换信道至最优信道。
  6. 根据权利要求5所述的方法，其特征在于，所述获取当前可用信道中的最优信道，包括：
    分别获取所有可用信道的背景环境噪声扫描结果，对每个可用信道的背景环境噪声预定数目的时刻点的扫描结果分别进行加权平均估计，得到每个可用信道的背景干扰平均值；
    根据所述背景干扰平均值确定出所有可用信道中背景干扰最小的信道。
  7. 根据权利要求6所述的方法，其特征在于，所述获取当前可用信道中的最优信道，还包括：
    获取每个可用信道在预定数目的时刻点的扫描结果中的扫描峰值，根据预设条件剔除部分扫描峰值对应的信道，并从其余可用信道中选取背景干扰平均值最小的信道作为最优信道。
  8. 根据权利要求7所述的方法，其特征在于，所述根据预设条件剔除部分扫描峰值对应的信道，包括：
    剔除所述扫描结果的扫描峰值中预设数量的较大的扫描峰值所对应的信道，或剔除所述扫描结果的扫描峰值中大于预设值的扫描峰值所对应的信道。
  9. 根据权利要求4所述的自适应调制编码方法，其特征在于，所述根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道，还包括：
    若在预定时间内信道切换的次数大于或等于预定阈值，则将所述调制编码方式等级降低到预设的调制编码方式等级。
  10. 根据权利要求2所述的方法，其特征在于，所述协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式，包括：
    若所述传输错误比率小于或等于预设的阈值，调整所述调制编码方式等级。
  11. 根据权利要求10所述的方法，其特征在于，所述调整所述调制编码方式等级，包括：
    若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且若当前业务实际采用的调制编码方式等级大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，将所述当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级。
  12. 根据权利要求10所述的方法，其特征在于，所述调整所述调制编码方式等级，包括：
    若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且当前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，保持所述当前业务实际采用的调制编码方式等级不变。
  13. 根据权利要求10所述的方法，其特征在于，所述调整所述调制编码方式等级，包括：
    若所述当前业务的传输错误比率及当前时刻之前的预定时间段内业务的传输错误比率均等于0，
    获取所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
    将所述当前业务实际采用的调制编码方式等级调整到所述当前业务应该采用的调制编码方式等级。
  14. 根据权利要求13所述的方法，其特征在于，所述将所述当前业务实际采用的调制编码方式等级调整到所述当前业务应该采用的调制编码方式等级，包括：
    当将所述当前业务实际采用的调制编码方式等级上调时，根据预设的回滞值上调所述调制编码方式等级。
  15. 根据权利要求1-14中任意一项所述的方法，其特征在于，所述方法还包括：
    获取信道扫描结果，并结合所述信道扫描结果计算信道的干扰估计结果；
    根据所述干扰估计结果，对各个等级的调制编码方式分别对应的信噪比映射区间进行修正。
  16. 根据权利要求15所述的方法，其特征在于，所述结合所述信道扫描结果计算信道的干扰估计结果，包括：
    获取所述信道的背景环境噪声扫描结果进行加权平均估计，得到所述信道的干扰估计结果。
  17. 根据权利要求6或16所述的方法，其特征在于，所述加权平均估计的权重为遗忘因子，所述遗忘因子在越靠近当前时间时取值越大。
  18. 根据权利要求1所述的方法，其特征在于，所述传输错误比率，包括以下内容中的至少一种：误包率、误码率、误块率、误帧率。
  19. 一种无线通信控制装置，其特征在于，包括：
    估计模块，用于根据信噪比的历史测量结果估计出当前信道的信噪比；
    获取模块，用于获取当前业务的传输错误比率；
    控制模块，用于结合当前信道的信噪比及所述传输错误比率确定无线通信 控制方式。
  20. 根据权利要求19所述的装置，其特征在于，所述控制模块，包括：
    控制子模块，用于协同使用信道跳频和调制编码方式等级的切换确定无线通信控制方式。
  21. 根据权利要求20所述的装置，其特征在于，所述控制子模块，包括：
    获取单元，用于若当前业务的传输错误比率大于预设的阈值，获取与所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；
    第一控制单元，用于若所述当前业务应该采用的调制编码方式等级小于当前业务实际采用的调制编码方式等级，将所述当前业务实际采用的调制编码方式等级降低到所述当前业务应该采用的调制编码方式等级。
  22. 根据权利要求21所述的装置，其特征在于，所述控制子模块，还包括：
    第二控制单元，用于若所述当前业务应该采用的调制编码方式等级大于或等于所述当前业务实际采用的调制编码方式等级，根据预定时间内信道切换的次数选择切换调制编码方式等级或切换信道。
  23. 根据权利要求22所述的装置，其特征在于，
    所述第二控制单元，具体用于若在预定时间内信道切换的次数小于预定阈值，则获取当前可用信道中的最优信道，切换信道至最优信道。
  24. 根据权利要求23所述的装置，其特征在于，
    所述第二控制单元，具体用于分别获取所有可用信道的背景环境噪声扫描结果，对每个可用信道的背景环境噪声预定数目的时刻点的扫描结果分别进行加权平均估计，得到每个可用信道的背景干扰平均值；根据所述背景干扰平均值确定出所有可用信道中背景干扰最小的信道。
  25. 根据权利要求24所述的装置，其特征在于，
    所述第二控制单元，还用于获取每个可用信道在预定数目的时刻点的扫描结果中的扫描峰值，根据预设条件剔除部分扫描峰值对应的信道，并从其余可用信道中选取背景干扰平均值最小的信道作为最优信道。
  26. 根据权利要求25所述的装置，其特征在于，
    所述第二控制单元，具体用于剔除所述扫描结果的扫描峰值中预设数量的 较大的扫描峰值所对应的信道，或剔除所述扫描结果的扫描峰值中大于预设值的扫描峰值所对应的信道。
  27. 根据权利要求22所述的自适应调制编码装置，其特征在于，
    所述第二控制单元，还用于若在预定时间内信道切换的次数大于或等于预定阈值，则将所述调制编码方式等级降低到预设的调制编码方式等级。
  28. 根据权利要求20所述的装置，其特征在于，所述控制子模块，包括；
    第三控制单元，用于若所述传输错误比率小于或等于预设的阈值，调整所述调制编码方式等级。
  29. 根据权利要求28所述的装置，其特征在于，
    所述第三控制单元，具体用于若所述当前业务的传输错误比率或当前时刻之前的预定时间段内业务的传输错误比率大于0，且若当前业务实际采用的调制编码方式等级大于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，将所述当前业务实际采用的调制编码方式等级降低到预设的调制编码方式等级。
  30. 根据权利要求28所述的装置，其特征在于，
    所述第三控制单元，具体用于若所述当前业务的传输错误比率或若当前时刻之前的预定时间段内业务的传输错误比率大于0，且当前业务实际采用的调制编码方式等级小于或等于当前信道的信噪比所在的信噪比映射区间对应的调制编码方式，保持所述当前业务实际采用的调制编码方式等级不变。
  31. 根据权利要求28所述的装置，其特征在于，
    所述第三控制单元，具体用于若所述当前业务的传输错误比率及当前时刻之前的预定时间段内业务的传输错误比率均等于0，获取所述当前信道的信噪比所在的信噪比映射区间对应的调制编码方式等级，得到当前业务应该采用的调制编码方式等级；将所述当前业务实际采用的调制编码方式等级调整到所述当前业务应该采用的调制编码方式等级。
  32. 根据权利要求31所述的装置，其特征在于，
    所述第三控制单元，具体用于当将所述当前业务实际采用的调制编码方式等级上调时，根据预设的回滞值上调所述调制编码方式等级。
  33. 根据权利要求19-32中任意一项所述的装置，其特征在于，所述装置还包括：调整模块，用于获取信道扫描结果，并结合所述信道扫描结果计算信 道的干扰估计结果；根据所述干扰估计结果，对各个等级的调制编码方式分别对应的信噪比映射区间进行修正。
  34. 根据权利要求33所述的装置，其特征在于，所述调整模块，具体用于获取所述信道的背景环境噪声扫描结果进行加权平均估计，得到所述信道的干扰估计结果。
  35. 根据权利要求24或34所述的装置，其特征在于，所述加权平均估计的权重为遗忘因子，所述遗忘因子在越靠近当前时间时取值越大。
  36. 根据权利要求19所述的装置，其特征在于，所述传输错误比率，包括以下内容中的至少一种：误包率、误码率、误块率、误帧率。
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