WO2015035927A1 - 一种信道配置方法及系统、接入控制器 - Google Patents

一种信道配置方法及系统、接入控制器 Download PDF

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Publication number
WO2015035927A1
WO2015035927A1 PCT/CN2014/086339 CN2014086339W WO2015035927A1 WO 2015035927 A1 WO2015035927 A1 WO 2015035927A1 CN 2014086339 W CN2014086339 W CN 2014086339W WO 2015035927 A1 WO2015035927 A1 WO 2015035927A1
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sub
channel configuration
managed
configuration scheme
areas
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PCT/CN2014/086339
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English (en)
French (fr)
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庄宏成
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华为技术有限公司
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    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel configuration method and system, and an access controller (English full name: Access Controller, abbreviated as AC).
  • AC Access Controller
  • Spectrum planning and optimization is an important topic of the network. Its main purpose is to maximize the utilization and efficiency of the spectrum while ensuring the experience of the edge cell.
  • the basic method is to make adjacent cells use different frequency bands as much as possible, that is, orthogonal channels.
  • orthogonal channels are limited.
  • the neighboring area will have more or less co-channel interference, and the WLAN-specific carrier monitoring mechanism will result in poor user experience at the cell edge.
  • WLAN uses industrial, scientific and medical (English: Industrial, Scientific and Medical, abbreviated as ISM) frequency band, which is vulnerable to external interference, plus the dynamics of user terminal load, access point (English full name: Access Point, abbreviated as: AP), is increasingly required for spectrum optimization.
  • ISM Industrial, Scientific and Medical
  • AP Access Point
  • Traditional spectrum optimization is based on a specific target, such as maximizing system capacity, and channel allocation to the cell according to the load condition of the cell can adapt to the dynamics of the service.
  • this method does not adapt to the WLAN network because the maximum capacity is easy to preferentially allocate channels to user terminals that are closer to the access point, and does not take into account the experience of the cell edge users in the WLAN.
  • the system can greatly improve the capacity of the cell center by channel reuse, thereby increasing the capacity of the network.
  • the service demand of the user terminal and the time variation of the mobile will cause the network to be divided into services.
  • the method is not uniform, and the simple channel reuse method cannot adapt to the change of the network service.
  • the channel allocation method in the prior art is difficult to adapt to changes in network services and to satisfy the experience of users at the edge of the cell.
  • the embodiment of the invention provides a channel configuration method and system, and an access controller, which is used for accessing a controller for channel configuration, and the obtained channel configuration scheme can balance the time variation of the network service and improve the experience of the cell edge user.
  • a first aspect of the present invention provides a channel configuration method, including:
  • the access controller AC receives the satisfaction of the service demand sent by each access point AP managed by the AC;
  • the AC determines, according to the satisfaction of the service requirement, whether channel optimization is required
  • the network performance indicator corresponding to each channel configuration scheme in the set of optional channel configuration schemes is calculated according to the estimated load of all the APs managed by the AC, where the estimated load is a value obtained by estimating the load of the AP. ;
  • the determining, according to the estimated load of all the APs that are managed by the AC, the network performance indicators corresponding to each channel configuration scheme in the set of the selected channel configuration schemes includes:
  • the selecting a channel configuration scheme that is the optimal for the network performance indicator from the set of channel configuration schemes includes:
  • a channel configuration scheme in which the AC service demand dissatisfaction, the service interruption rate, and the average load are the smallest are selected from the channel configuration scheme set.
  • the method further includes:
  • the access controller AC receives the service demand satisfaction sent by each AP managed by the AC, including:
  • the service requirement is a value obtained based on the satisfaction of the guaranteed bit rate service and the satisfaction of the non-guaranteed bit rate service in all sub-areas of the AP.
  • calculating according to the estimated load of all APs managed by the AC, each channel configuration scheme in the set of optional channel configuration schemes.
  • the total transmission duration required for all sub-areas of the AP according to the required transmission duration of each sub-area of the AP, and the required transmission duration of the sub-area is according to the rate requirement of the user terminal in the sub-area.
  • the average value and the average value of the actual available rate of the user terminal, the load increase parameter of the interference domain and the transmission domain, and the actual transmission duration required for all sub-areas of the neighboring APs of the AP are obtained;
  • the calculating, according to the estimated load of all APs managed by the AC, each channel configuration scheme in an optional channel configuration scheme set The corresponding AC business demand dissatisfaction includes:
  • f UDB (B, M) is the dissatisfaction of the AC service demand corresponding to the channel configuration scheme B
  • C is the AC AP management based on the estimated load in all sub-regions
  • the total number of sub-regions of the AC M c is managed by the AP C
  • a p is the AC managed AP set
  • M being the AC The total number of sub-regions of all managed APs.
  • Calculating, according to the estimated load of all the APs managed by the AC, the service interruption rate corresponding to each channel configuration scheme in the set of optional channel configuration schemes includes:
  • f SI (B, B pre , M) is the service interruption rate corresponding to the channel configuration scheme B
  • b c is the channel allocated for the AP c in the channel configuration scheme B
  • the channel currently used by AP c , C is the AC AP management based on the estimated load in all sub-regions
  • the total number of sub-regions of the AC M c is managed by the AP C
  • a p is the AC managed AP set
  • M being the AC The total number of sub-regions of all managed APs.
  • the average load includes:
  • f m-load (B, M) is the average load corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas
  • a p is a set of APs managed by the AC
  • is the number of APs managed by the AC
  • M is the AC-managed The total number of sub-areas for all APs.
  • the method further includes:
  • the service requirement satisfaction that the access controller AC receives for each AP managed by the AC includes:
  • the service demand satisfaction is based on the satisfaction of the guaranteed bit rate service and the non-guaranteed bit rate service in all the sub-areas belonging to the outer zone of the AP
  • the value obtained by the satisfaction is that the sub-area belonging to the outer area refers to a sub-area whose average value of the access signals of the user terminals in the sub-area is smaller than a second value set in advance.
  • the calculating, according to the estimated load of all APs managed by the AC, each channel configuration scheme in an optional channel configuration scheme set The corresponding network performance indicators previously include:
  • the total transmission duration required for all sub-areas belonging to the outer area of the AP is obtained according to the transmission duration required for each sub-area belonging to the outer area of the AP, and the transmission duration of the sub-area belonging to the outer area is according to the The average of the rate requirements of the user terminals in the sub-areas belonging to the outer zone and the average of the available rates of the user terminals, the load increase parameters of the interference domain and the transmission domain, and all the sub-areas of the adjacent APs of the AP.
  • the actual transmission time required for the area is obtained;
  • the calculating, according to the estimated load of all APs managed by the AC, each channel configuration scheme in an optional channel configuration scheme set The corresponding AC business demand dissatisfaction includes:
  • f' UDB (B, M') is an unsatisfied AC service requirement corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • M' c is the number of sub-areas belonging to the outer zone of the AP-managed AP c
  • a p is managed by the AC
  • the set of APs, M' is the total number of sub-areas belonging to the outer zone of all APs managed by the AC.
  • the corresponding business interruption rate includes:
  • f' SI (B, B pre , M') is the service interruption rate corresponding to the channel configuration scheme B
  • b c is the channel allocated for the AP c in the channel configuration scheme B
  • the channel currently used by AP c The AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • M' c is the number of sub-areas belonging to the outer zone of the AP-managed AP c
  • a p is managed by the AC
  • the set of APs, M' is the total number of sub-areas belonging to the outer zone of all APs managed by the AC.
  • the corresponding average load includes:
  • f' m-load (B, M') is the average load corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on an estimated load of all sub-areas belonging to the outer zone
  • a p is a set of APs managed by the AC
  • is the number of APs managed by the AC
  • M' is The total number of sub-areas belonging to the outer zone of all APs managed by the AC.
  • the method further includes:
  • the sub-area belonging to the inner zone is The sub-region in which the average value of the access signals of the user terminals in the finger region is greater than or equal to the second value set in advance.
  • the method further includes:
  • Determining whether the channel needs to be optimized according to the satisfaction of the service requirement includes:
  • the AC calculates an average value of the obtained service demand satisfaction
  • the AC is full according to the service requirement
  • the intention to determine whether channel optimization is required includes:
  • the AC compares the acquired service demand satisfaction with a preset fourth value, and determines the number of the service demand satisfactions that are greater than or equal to the preset fourth value;
  • a second aspect of the present invention provides an access controller AC, including:
  • a receiving module configured to receive a service demand satisfaction sent by each access point AP managed by the AC;
  • a first determining module configured to determine, according to the service demand satisfaction, whether channel optimization is required after the receiving module receives the service demand satisfaction sent by each AP managed by the AC;
  • a calculation module configured to calculate, according to an estimated load of all APs managed by the AC, a network performance indicator corresponding to each channel configuration scheme in the set of channel configuration schemes when the first determining module determines that channel optimization is required.
  • the estimated load is a value obtained by estimating a load of the AP;
  • a selection module configured to select, according to the network performance indicator corresponding to each channel configuration scheme in the channel configuration scheme, the channel configuration scheme that is the network performance indicator optimal from the channel configuration scheme set.
  • the calculation module is specifically configured to calculate, according to the estimated load of all the APs managed by the AC, an AC service demand dissatisfaction, a service interruption rate, and an average load corresponding to each channel configuration scheme in the set of the selected channel configuration schemes;
  • the selecting module is specifically configured to select, from the set of channel configuration schemes, a channel configuration scheme in which an AC service demand dissatisfaction, a service interruption rate, and an average load are the smallest.
  • the AC further includes:
  • a second determining module configured to determine whether the number of orthogonal channels currently available to the AC is less than or equal to a preset first value
  • the receiving module is specifically configured to: if the second determining module determines that the AC is currently available The number of orthogonal channels is less than or equal to a preset first value, and receives a service requirement satisfaction sent by each AP managed by the AC, where the service requirement satisfaction is based on the guarantee bits in all sub-areas of the AP. The value of the satisfaction of the business and the satisfaction of the non-guaranteed bit rate business.
  • the AC further includes:
  • a first load calculation module configured to calculate an estimated load of each AP based on all sub-areas before the calculation module calculates a network performance indicator corresponding to each channel configuration scheme in the channel configuration scheme;
  • the first load calculation module includes:
  • a first calculation module configured to obtain a total transmission duration required for all sub-areas of the AP according to a transmission duration required for each sub-area of the AP, where a required transmission duration is according to the sub-area
  • the average of the rate requirements of the user terminals and the average of the actual available rates of the user terminals, the load increase parameters of the interference domain and the transmission domain, and the actual transmission duration required for all sub-areas of the neighboring APs of the AP;
  • a second calculating module configured to obtain the AP according to a nominal rate of the AP, a protocol efficiency factor of a media access control MAC layer, and an average of actual available rates of user terminals in all sub-areas of the AP Total transmission time available for all sub-areas;
  • a third calculation module configured to: after the first calculation module obtains a total transmission duration required for all sub-areas of the AP, and after the second calculation module obtains a total transmission duration available for all sub-areas of the AP, A ratio between a total transmission duration required for all sub-regions of the AP and a total transmission duration available to all sub-regions of the AP, the ratio being an estimated load of the AP based on all sub-regions.
  • the AC further includes:
  • the calculation module includes:
  • the fourth calculation module is configured to calculate the dissatisfaction of the AC service requirement corresponding to the channel configuration scheme B according to the following manner:
  • f UDB (B, M) is the dissatisfaction of the AC service demand corresponding to the channel configuration scheme B
  • C is the AC AP management based on the estimated load in all sub-regions
  • the total number of sub-regions of the AC M c is managed by the AP C
  • a p is the AC managed AP set
  • M being the AC The total number of sub-areas of all managed APs
  • the fifth calculating module is configured to calculate a service interruption rate corresponding to the channel configuration scheme B as follows:
  • f SI (B, B pre , M) is the service interruption rate corresponding to the channel configuration scheme B
  • b c is the channel allocated for the AP c in the channel configuration scheme B
  • the channel currently used by AP c , C is the AC AP management based on the estimated load in all sub-regions, the total number of sub-regions of the AC M c is managed by the AP C,
  • a p is the AC managed AP set, M being the AC The total number of sub-areas of all managed APs;
  • the sixth calculating module is configured to calculate an average load corresponding to the channel configuration scheme B as follows:
  • f m-load (B, M) is the average load corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas
  • a p is a set of APs managed by the AC
  • is the number of APs managed by the AC
  • M is the AC-managed The total number of sub-areas for all APs.
  • the receiving module is further configured to: if the second determining module determines that the number of orthogonal channels currently available to the AC is greater than Receiving a preset first value, receiving a service demand satisfaction sent by each AP managed by the AC, the service demand satisfaction being satisfactory based on a guaranteed bit rate service in all sub-areas belonging to the AP The value obtained by the degree of satisfaction of the non-guaranteed bit rate service, wherein the sub-area belonging to the outer area refers to a sub-area whose average value of the access signals of the user terminals in the sub-area is smaller than a preset second value.
  • the AC further includes:
  • a second load calculation module configured to calculate, before the calculation module calculates a network performance indicator corresponding to each channel configuration scheme in the channel configuration scheme, an estimated load of each AP based on all sub-regions belonging to the outer zone;
  • the second load calculation module includes:
  • a seventh calculation module configured to obtain, according to a transmission duration required for each sub-area belonging to the outer area of the AP, a total transmission duration required for all sub-areas belonging to the outer area of the AP, and the sub-area belonging to the outer area
  • the transmission duration is an average of the rate requirements of the user terminals in the sub-areas belonging to the outer zone and an average of the available rates of the user terminals, load increase parameters of the interference domain and the transmission domain, and neighboring APs of the AP.
  • An eighth calculating module configured to obtain the AP according to an average value of a nominal rate of the AP, a protocol efficiency factor of a MAC layer, and an actual available rate of user terminals in a sub-area of the AP that belongs to the outer zone. Total transmission time available for all sub-areas belonging to the outer zone;
  • a ninth calculating module configured to obtain, in the seventh calculating module and the eighth calculating module, total transmission durations required for all sub-areas belonging to the outer zone of the AP, and all the APs belonging to the outer zone After calculating the total transmission duration of the sub-area, calculating a ratio between a total transmission duration required for all sub-areas belonging to the outer area of the AP and a total transmission duration available to all sub-areas belonging to the outer area of the AP, The ratio is the estimated load of all sub-areas belonging to the outer zone of the AP.
  • the calculating module further includes:
  • the tenth calculation module is configured to calculate the dissatisfaction of the AC service requirement corresponding to the channel configuration scheme B according to the following manner:
  • f' UDB (B, M') is an unsatisfied AC service requirement corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone, and M' c is the number of sub-areas belonging to the outer zone of the AP-managed AP c , and A p is managed by the AC a set of APs, where M' is the total number of sub-areas belonging to the outer zone of all APs managed by the AC;
  • the eleventh calculation module is configured to calculate a service interruption rate corresponding to the channel configuration scheme B as follows:
  • the channel currently used by AP c The AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone, and M' c is the number of sub-areas belonging to the outer zone of the AP-managed AP c , and A p is managed by the AC a set of APs, where M' is the total number of sub-areas belonging to the outer zone of all APs managed by the AC;
  • the twelfth computing module is configured to calculate an average load corresponding to the channel configuration scheme B as follows:
  • f' m-load (B, M') is the average load corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on an estimated load of all sub-areas belonging to the outer zone
  • a p is a set of APs managed by the AC
  • is the number of APs managed by the AC
  • M' is The total number of sub-areas belonging to the outer zone of all APs managed by the AC.
  • the AC further includes:
  • An allocation module configured to allocate, according to the currently available orthogonal channel of the AC, an orthogonal channel obtained by removing the selected channel configuration scheme to all sub-areas belonging to the inner zone of the AP managed by the AP, where the intra-area belongs to
  • the sub-area of the area refers to a sub-area whose average value of the access signals of the user terminals in the sub-area is greater than or equal to a second value set in advance.
  • the AC further includes:
  • a third determining module configured to determine, after the selecting module selects a channel configuration scheme, whether a network performance indicator of the selected channel configuration scheme that is optimal for the network performance indicator is better than a channel configuration scheme currently used by the AC Network performance indicators;
  • An execution module configured to use the selected network performance after the third determining module determines that a network performance indicator of the selected channel configuration scheme is better than a network performance indicator of a channel configuration scheme currently used by the AC The optimal channel configuration scheme for the indicator.
  • a third aspect of the present invention provides a channel configuration system, including the access controller AC provided by the second aspect of the present invention, and all access points AP managed by the AC.
  • the AC After the AC obtains the satisfaction of the service requirements of each AP managed by the AC, it will judge whether the channel optimization is needed according to the acquired service demand satisfaction, and if the channel optimization is needed, the AC estimates the AP according to the AC.
  • the load calculates a network performance indicator corresponding to each channel configuration scheme in the set of optional channel configuration schemes, and selects a channel configuration scheme with the best network performance index from the channel configuration scheme set, which can comprehensively consider the time variation of the network service and the cell
  • the edge user experience can effectively realize the time-varying of network services and the optimization of the user experience at the edge of the cell, improving the performance of the system.
  • FIG. 1 is a schematic diagram of a channel configuration method according to an embodiment of the present invention.
  • FIG. 2 is another schematic diagram of a channel configuration method according to an embodiment of the present invention.
  • FIG. 3 is another schematic diagram of a channel configuration method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing the structure of an AC in an embodiment of the present invention.
  • FIG. 5 is another schematic diagram of a structure of an AC according to an embodiment of the present invention.
  • FIG. 6 is another schematic diagram of a structure of an AC according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a channel configuration system according to an embodiment of the present invention.
  • the embodiment of the invention provides a channel configuration method and system, and an access controller, which is used for accessing a controller for channel configuration, and the obtained channel configuration scheme can take into account the time variation of the network service and improve the experience of the user at the edge of the cell. Improve system performance.
  • an embodiment of a channel configuration method according to an embodiment of the present invention includes:
  • the AC receives the service demand satisfaction sent by each AP managed by the AC.
  • the AC is responsible for access control, forwarding, and statistics of the wireless network, management of the AP, and the like, and can perform channel configuration on the AP.
  • the AP periodically performs the calculation of the satisfaction of the service requirement, and sends the calculated satisfaction of the service requirement to the AC that manages the AP. Therefore, the AC will receive the service requirement of each AP managed by the AP. Satisfaction, for example, if the AC manages 5 APs, the AC will receive the corresponding service demand satisfaction sent by the 5 APs.
  • the AC determines whether channel optimization is required according to service satisfaction
  • the AC will satisfy the service demand according to the AP received by the AC. Determine if channel optimization is required.
  • channel optimization calculate a network performance indicator corresponding to each channel configuration scheme in the selected channel configuration scheme set according to the estimated load of all APs managed by the AC, and estimate the load as a value obtained by estimating the load of the AP. ;
  • each channel in the set of optional channel configuration schemes is calculated according to the estimated load of all APs managed by the AC.
  • the network performance indicator corresponding to the configuration scheme, where the estimated load is a value obtained by estimating the load of the AP, and the set of the optional channel configuration scheme is related to the number of currently available orthogonal channels, and the number of currently available orthogonal channels is determined.
  • the set of the channel configuration schemes can be determined, and the method for determining the set of the channel configuration schemes is the prior art, and is not described here.
  • the network performance indicators may be: AC service demand dissatisfaction, The service interruption rate and the average load.
  • the network performance indicator can also be other performance parameters, which are not limited herein.
  • the AC after calculating the network performance indicator corresponding to each channel configuration scheme in the optional channel configuration scheme set, the AC selects the network performance index from the optional channel configuration scheme set.
  • a channel configuration scheme for example, using a genetic algorithm to select a channel configuration scheme in which an AC service demand dissatisfaction, a service interruption rate, and an average load are minimized from the set of optional channel configuration schemes, the AC service demand dissatisfaction, service
  • the channel configuration scheme with the smallest interrupt rate and average load is the channel configuration scheme with the best network performance index.
  • the AC after receiving the service demand satisfaction of the AP managed by the AC, the AC determines whether the channel optimization needs to be performed according to the satisfaction of the service demand of the received AP, and in the case that channel optimization is required, the AC Calculating network performance indicators corresponding to each channel configuration scheme in the selected channel configuration scheme set according to the estimated load of all APs managed by the AC, and selecting a channel configuration scheme with the best network performance indicator from the channel configuration scheme set, which can effectively Realizing the time-varying of network services and optimizing the user experience at the edge of the cell improves the performance of the system.
  • FIG. 2 is an embodiment of a channel configuration method according to an embodiment of the present invention, including:
  • the AC will determine whether the number of currently available orthogonal channels is less than or It is equal to the preset first value. For example, if the preset first value is 3, the AC determines whether the number of currently available orthogonal channels is less than or equal to 3.
  • the AC receives the service requirement satisfaction sent by each AP managed by the AC, and the service requirement satisfaction is all sub-areas based on the AP.
  • the AC receives the service demand satisfaction sent by each AP managed by the AC, and the service demand satisfaction is based on The value of the satisfaction of the guaranteed bit rate service and the satisfaction of the non-guaranteed bit rate service in all sub-areas of the AP.
  • each AP divides the area range managed by the AP into multiple sub-areas, and the AC can use the AP if the number of orthogonal channels currently available to the AC is less than or equal to a preset first value. Satisfaction with the service demand of the AP is obtained based on the satisfaction of the guaranteed bit rate service in all of its sub-areas and the satisfaction of the non-guaranteed bit rate service.
  • the AP may obtain the service demand satisfaction based on the service requirements of all its sub-areas as follows:
  • S c is the service demand satisfaction of AP c based on the service requirements of all sub-areas
  • S GBR, c is the guaranteed bit rate service in all sub-areas of AP c (English full name: Guaranteed the Bit Rate, abbreviated as: GBR) satisfaction
  • V i is the average of the actual rate guaranteed bit rate service in the sub-region of i
  • V i, 0 is the theoretical average rate guaranteed bit rate service in the i-th region
  • S non -GBR,c is the satisfaction of the non-guaranteed bit rate service in all sub-areas of AP c
  • the service of the WLAN may be divided into a guaranteed bit rate service and a non-guaranteed bit rate service.
  • the guaranteed bit rate service and the non-guaranteed bit in each sub-area may be The rate service is statistically obtained to obtain the satisfaction of the guaranteed bit rate service and the satisfaction of the non-guaranteed bit rate service in all the sub-areas of the above-mentioned AP, thereby obtaining the service demand satisfaction of the AP.
  • the AC receives the satisfaction of the service demand sent by each AP managed by the AC, and the satisfaction of the service requirement is based on the AP.
  • the AC performs channel configuration periodically, and the AP may send the service demand satisfaction and/or the service demand based on the service requirements of all the sub-areas to the AC according to the period in which the AC performs the channel configuration. It is based on the service demand satisfaction of all the sub-areas of the sub-areas, or the AC can send a feedback trigger message to all the APs it manages when the AP needs to send the service demand satisfaction to the AP.
  • the type of service demand satisfaction that needs to be fed back by the AP may be the service demand satisfaction based on the service requirements of all the sub-areas of the AP, or may be the service based on the service requirements of all the APs belonging to the outer zone of the AP. Demand satisfaction.
  • the AC determines whether the channel optimization is required according to the service demand satisfaction, and if yes, proceeds to step 204;
  • the AC determines whether the channel needs to be optimized according to the service demand satisfaction obtained by the received AP based on the service requirements of all the sub-areas of the AP, wherein the AC determines that there are multiple ways to optimize the channel. For example, the AC may calculate an average value of the service demand satisfaction obtained by the received APs based on the service requirements of all the sub-areas; and determine whether the average value of the calculated service demand satisfaction is greater than or equal to the preset. The first value; if the average value is greater than or equal to the preset first value, the AC may determine that channel optimization is not required; if the average value is less than the preset first value, the AC may determine that channel optimization is required.
  • the service demand satisfaction sent by the five APs is 0.7, 0.8, 0.75, 0.85, and 0.7, respectively, and the average value of the service demand satisfaction of the five APs is calculated, and the average value is 0.76, if the first value is set in advance. If it is 0.7, it can be determined that the average value 0.76 of the service demand satisfaction calculated by the AC is greater than the preset first value of 0.7, and channel optimization is not required.
  • the AC compares the satisfaction of the service requirements obtained by the received APs based on the service requirements of all the sub-areas with the fourth value set in advance, and determines the service sent by the AP that is greater than or equal to the fourth value set in advance.
  • the number of satisfactions of the demand; and determining whether the ratio of the number of service demand satisfactions of the APs greater than or equal to the fourth value set in advance to the number of service satisfactions received by the AC is greater than or equal to the preset number Five values; if greater than or equal to the fifth value, the AC may determine that channel optimization is not required; if less than the fifth value, the AC may determine that channel optimization is required. For example, if the AC receives the satisfaction of the service demand sent by the five APs it manages, it is 0.6, 0.7, 0.75, 0.8, and 0.85 respectively. If the fourth value set in advance is 0.75, it can be determined that it is greater than or equal to the preset. The fourth value of 0.75 of the business demand satisfaction is 3, then the ratio of 3 to 5 is 0.6. If the preset fifth value is 0.7, the ratio 0.6 is less than the preset fifth value of 0.7, and the AC determines the need. Perform channel optimization.
  • the AC will calculate each AP of the AC management based on the estimated load of all sub-areas, and if the AC determines that channel optimization is not required, the current channel configuration will continue to be used. Program.
  • the AC may calculate an estimated load of each AP based on all sub-areas according to the following steps, including the total transmission required by the AC to obtain all sub-areas of the AP according to the required transmission duration of each sub-area of the AP.
  • the length of time required for the sub-area is based on the average of the rate requirements of the user terminals in the sub-area and the average of the actual available rates of the user terminals, the load-increasing parameters of the interference domain and the transmission domain, and the AP's Obtained by the actual transmission duration required for all sub-areas of neighboring APs; then, the AC is based on the nominal rate of the AP, the protocol efficiency factor of the MAC layer, and the actually available rate of user terminals in all sub-areas of the AP. The average value of the total transmission time available for all sub-areas of the AP; finally, the total transmission duration required for all sub-areas of the AP and the AP's location
  • the AC calculates the estimated load of AP c as an example.
  • the AC can obtain the total transmission duration T c required for all sub-areas of AP c as follows:
  • ANR c is a collection of APs adjacent to AP c ,
  • the actual transmission duration required for all sub-areas of AP d adjacent to AP c , a i, d and x c, d are the load increase parameters of the interference domain and the transmission domain.
  • the average rate of the actual available rate of the user terminal in the i-th sub-area of the AP c is:
  • Scheduler to AP c ⁇ BW is the channel bandwidth AP c, ⁇ SINR signal to noise ratio of the coefficients AP c, W is the channel bandwidth, SINR i is the SNR of the i th region.
  • the signal to noise ratio SINR i of the i th subregion in AP c is:
  • P c is the transmit power of AP c
  • P d is the transmit power of AP d
  • ANR c is the set of APs adjacent to AP c
  • P noise is the noise power of AP c ;
  • the average power of the i-th area AP c is the AP d channel gain, wherein, p i, c to users in the AP c in the i-th terminal in the received useful signal, p i, d to AP c The average power of the interference signal received by the user terminal in the i-th sub-area.
  • CCA i is the detection threshold of the i-th sub-region; if the value of a i,d is 0, it indicates that the load brought by the interference domain increases. If the value of a i,d is 1, the load caused by the transmission domain increases. .
  • the first item of the calculation formula of the T c used in calculating the total transmission duration required for all sub-areas of the AP considers signal interference between adjacent cells
  • second The term considers the interference of the transmission domain of the adjacent cell. Therefore, the AC can comprehensively consider the load increase caused by the interference domain and the transmission domain, so that a more accurate estimation load is obtained, so that the AC can effectively optimize the channel configuration.
  • the AC can obtain the total transmission duration available for all sub-areas of the AP c as follows:
  • T total, c is the total transmission of all sub-regions AP c available length
  • C c is the AP c nominal rate
  • ⁇ c is the AP c
  • R avg,c is the average of the actually available rates of user terminals in all sub-areas in AP c .
  • the average value of the actually available rates of user terminals in all sub-areas in AP c Where M c is the total number of sub-areas of AP c , and R i is the average of the rates actually available to the user terminals in the i-th sub-area.
  • the ratio of the total transmission duration required by the AP to the total transmission duration available to the AP is the estimated load of the AP, and the calculation formula is:
  • the estimated load takes into account the carrier sensing characteristics of the WLAN and the same-frequency interference, which greatly improves the accuracy of the load estimation, and can effectively reflect the relationship with the channel, so that the AC can effectively perform channel configuration.
  • the AC after calculating the estimated load obtained by each AP based on the rate of all its sub-areas, the AC calculates each channel configuration in the set of optional channel configuration schemes according to each calculated estimated load.
  • the set of optional channel configuration schemes is related to the number of currently available orthogonal channels. After the number of currently available orthogonal channels is determined, the set of optional channel configuration schemes may be determined and optionally The method for determining the set of channel configuration schemes is prior art, and details are not described herein again.
  • the AC service demand dissatisfaction, service interruption rate, and average load of the channel configuration scheme B are used as an example to describe the AC service demand dissatisfaction, service interruption rate, and average load calculation method, including :
  • f UDB (B, M) is the dissatisfaction of the AC service demand corresponding to the channel configuration scheme B
  • M c is the AC managed AP C a
  • a p is set AC managed by the AP
  • M being AC management sub-area of all the AP total.
  • f SI (B, B pre , M) is the service interruption rate corresponding to channel configuration scheme B
  • b c is the channel allocated for AP c in channel configuration scheme B
  • the channel currently used by AP c The total number of AC managed AP C sub-regions based on the estimated load in all sub-regions
  • M c is the AC managed AP C a
  • a p is set AC managed by the AP
  • M being the sub-areas of all the AP AC managed total.
  • f m-load (B, M) is the average load corresponding to channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas
  • a p is the set of APs managed by the AC
  • is the number of APs managed by the AC
  • M is the total number of sub-areas of all APs managed by the AC.
  • the AC uses a genetic algorithm to select a channel configuration scheme in which the AC service demand dissatisfaction, the service interruption rate, and the average load are the smallest from the channel configuration scheme set, as the selected channel configuration scheme.
  • the selected channel configuration scheme can effectively optimize the dissatisfaction of the AC service demand, the service interruption rate, and the average load, and the optimization of the AC service demand dissatisfaction can effectively improve the experience of the cell edge user.
  • the optimization of the service interruption rate can effectively reduce the cost of spectrum configuration, further improve the user experience, and the optimization of the average load can effectively improve the network capacity.
  • the AC may determine a utility function for performing the genetic algorithm. If the utility function is minmize ⁇ f UDB , f m-load , f SI ⁇ , the genetic function may be used to find an AC service demand according to the utility function. The channel configuration scheme with the least satisfaction, the service interruption rate and the average load; if the utility function is minmize ⁇ f UDB , f m-load ⁇ , the AC can find the optimized channel configuration scheme through the genetic algorithm according to the utility function. And calculating a service interruption rate of each channel configuration scheme in the optimized channel configuration scheme set, and selecting a channel configuration scheme with the smallest service interruption rate from the set of the optimized channel configuration schemes.
  • the AC further determines whether the selected channel configuration scheme is better than the channel configuration scheme currently used by the AC, and if it is determined that the selected channel configuration scheme is better than AC.
  • the channel configuration scheme currently used will use the selected channel configuration scheme. If it is determined that the selected channel configuration scheme is not superior to the channel configuration scheme currently used by the AC, the currently used channel configuration scheme continues to be used.
  • the AC performs channel configuration based on all sub-areas of the AP
  • the selected channel configuration scheme is a channel configuration scheme obtained based on all sub-areas of the AC-managed AP
  • the channel configuration scheme currently used by the AC for comparing the selected channel configuration schemes also refers to the channel configuration scheme currently used by all sub-regions of the AC-managed AP.
  • the method for determining whether the selected channel configuration scheme is better than the channel configuration scheme currently used by the AC may be: the AC determines the AC service demand dissatisfaction, the service interruption rate, and the average of the selected channel configuration scheme. Whether the load is smaller than the AC service demand dissatisfaction, service interruption rate, and average load of the channel configuration scheme currently used by the AC. It should be noted that the AC may use other methods to determine whether the selected channel configuration scheme is better than AC. The channel configuration scheme currently used will not be described here.
  • the AC after determining that the number of currently available orthogonal channels is less than or equal to a preset first value, the AC satisfies the service demand after receiving the service demand satisfaction sent by the AP managed by the AC.
  • the degree is the value obtained based on the service requirements of all sub-areas of the AP, and the AC will judge whether channel optimization is needed according to the satisfaction of the service demand, and if so, calculate the total transmission required for all sub-areas of each AP managed by the AC.
  • the ratio is the estimated load of the corresponding AP and is based on the obtained Estimating the AC service demand dissatisfaction, service interruption rate, and average load of each channel configuration scheme in the optional channel configuration scheme, and using the genetic algorithm to select the AC service demand dissatisfaction from the set of optional channel configuration schemes a channel configuration scheme in which the service interruption rate and the average load are the smallest, and in the case where the selected minimum configuration scheme is superior to the channel configuration scheme currently used by the AC, the selected channel configuration scheme is used, and the network service is comprehensively considered.
  • Denatured and user experience at the edge of the cell can effectively realize the time-varying of network services and the optimization of the user experience at the edge of the cell, improving the performance of the system.
  • the method includes:
  • the AC determines whether the number of currently available orthogonal channels is less than or equal to a preset first value. For example, if the preset first value is 3, the AC determines the currently available orthogonal channel. Whether the number is less than or equal to 3.
  • the AC receives the satisfaction of the service requirement sent by each AP managed by the AC, and the satisfaction of the service requirement is all AP-based belonging to the outer zone.
  • the AC may receive the service demand satisfaction sent by each AP managed by the AC, and the service demand satisfaction is based on the AP.
  • the AP obtains the service demand satisfaction of the AP based on the service requirements of all the sub-areas belonging to the outer zone as follows:
  • S'c to AP c based on business requirements satisfaction of all to the partial region of the outer regions of the business needs
  • S' GBR, c is the satisfaction guaranteed bit rate services in all sub-regions belonging to the outer region of the AP c of
  • V' i is the average of the actual rate of the guaranteed bit rate service in the i-th sub-area belonging to the outer zone
  • V' i, 0 is the theory of the guaranteed bit rate service in the i-th sub-area belonging to the outer zone Average of the rates
  • S' non-GBR, c is the satisfaction of non-guaranteed bit rate services in all sub-areas belonging to the outer zone of AP c
  • AMBR average non-guaranteed bit rate services in all sub-regions belonging to the outer region is non-guaranteed bit rate average actual traffic rate in all sub-regions outside the region belonging to the AP c, V 'AMBR of the AP c .
  • the AC determines whether the channel optimization is required according to the satisfaction of the service demand, and if yes, proceeds to step 304;
  • the AC determines whether the channel needs to be optimized according to the service demand satisfaction obtained by the AP based on the service requirements of all the sub-areas belonging to the outer zone, wherein the AC determines how many channels need to be optimized. For example, the AC may calculate an average value of the service demand satisfaction obtained by the received service request of all AP-based sub-areas of the AP sent by the AP that it manages; determine whether the calculated average value is greater than or equal to a preset first value; if the average value is greater than or equal to a preset first value, the AC may determine that channel optimization is not required; if the average value is less than a preset first value, the AC may determine that a channel needs to be performed optimization.
  • the AC compares the service demand satisfaction obtained by the received AP with all the service requirements of the sub-areas belonging to the outer zone by the AP, and compares with the preset fourth value, and determines that the fourth is greater than or equal to the preset fourth value.
  • each AP that is managed by the AC is calculated based on the estimated load of all the sub-areas belonging to the outer zone, which may be: according to each sub-area of the AP.
  • the required transmission duration of the area obtains the total transmission duration required for all sub-areas belonging to the outer area of the AP, wherein the transmission duration of the sub-area belonging to the outer area is based on the rate of the user terminal in the sub-area belonging to the outer area.
  • the average value of the demand and the average value of the available rate of the user terminal, the load increase parameter of the interference domain and the transmission domain, and the actual transmission duration required for all the sub-areas belonging to the outer zone of the adjacent AP of the AP are obtained;
  • the average rate of the AP, the protocol efficiency factor of the MAC layer, and the average of the actual available rates of the user terminals in the sub-areas belonging to the outer zone of the AP obtain the available transmission duration of all sub-areas belonging to the outer zone of the AP.
  • the AC calculates the estimated load of the AP c as an example.
  • the AC can obtain the total transmission duration T' c of all sub-areas belonging to the outer zone of the AP c as follows:
  • 'i is the average rate of the user terminal within the AP c in the region belonging to the i-th sub-outer zone demand, R' D i to the AP c belonging to the i-th user in the region outside the sub-region
  • ANR c is the set of APs adjacent to AP c
  • the actual transmission duration required for all sub-areas belonging to the outer zone of AP d adjacent to AP c , a i, d and x c, d are load increase parameters of the interference domain and the transmission domain.
  • the average of the rates actually available to the user terminals in the sub-area of the i-th sub-area in the AP c is:
  • Scheduler to AP c is the channel bandwidth AP c, ⁇ SINR signal to noise ratio of the coefficients AP c, W is the channel bandwidth, SINR i belonging to the i-th subregion of the outer region of the signal to noise ratio.
  • the signal-to-noise ratio SINR i of the i-th sub-area belonging to the outer zone in the AP c is:
  • P c is the transmit power of AP c
  • P d is the transmit power of AP d
  • ANR c is the set of APs adjacent to AP c
  • P noise is the noise power of AP c ;
  • AP c is the sub-areas belonging to the i-th AP c outer region of the channel gain, Is the channel gain of the i-th sub-area belonging to the outer zone in AP c to AP d ,
  • p i,c is a useful signal received by the user terminal in the sub-area belonging to the i-th sub-area in AP c
  • the average power, p i,d is the average power of the interference signal received by the user terminal in the sub-area of the i-th sub-area in AP c .
  • P' i,d is the average value of the power of the AP d adjacent to the AP c received by the user terminal in the i-th sub-area belonging to the outer zone
  • CCA' i is the i-th sub-area belonging to the outer zone Detection threshold of the area
  • the total transmission duration T' total, c of all the sub-areas belonging to the outer zone of the AP is:
  • C c is the nominal rate of AP c, ⁇ c Control (MAC) layer to a media access protocol efficiency factor AP c, R 'avg, c is the actual user terminal in all sub-regions outside the region belonging to the AP c The average of the available rates.
  • MAC media access protocol efficiency factor
  • the AC calculates the AC service demand dissatisfaction, the service interruption rate, and the average load of each channel configuration scheme in the optional channel configuration scheme set according to the calculated estimated load of the AP that is managed.
  • the estimated load of the AP is the estimated load of the AP based on all sub-areas belonging to the outer zone.
  • the following is an example of calculating the service demand satisfaction, the service interruption rate, and the average load by calculating the AC service demand dissatisfaction, service interruption rate, and average load of the channel configuration scheme B, including:
  • f' UDB (B, M') is the dissatisfaction of the AC service demand corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • M' c is the number of sub-areas belonging to the outer zone of the AP c managed by the AC
  • a p is the set of APs managed by the AC
  • M' The total number of sub-areas belonging to the outer zone of all APs managed by the AC.
  • f' SI (B, B pre , M') is the service interruption rate corresponding to channel configuration scheme B
  • b c is the channel allocated for AP c in channel configuration scheme B
  • the channel currently used by AP c The AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • M' c is the number of sub-areas belonging to the outer zone of the AP c managed by the AC
  • a p is the set of APs managed by the AC
  • M' The total number of sub-areas belonging to the outer zone of all APs managed by the AC.
  • f' m-load (B, M') is the average load corresponding to channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • a p is the set of APs managed by the AC
  • is the number of APs managed by the AC
  • M' is the number of all APs managed by the AC. The total number of sub-areas belonging to the outer zone.
  • the set of optional channel configuration schemes is related to the number of currently available orthogonal channels. After the number of currently available orthogonal channels is determined, the set of optional channel configuration schemes may be determined and optionally The method for determining the set of channel configuration schemes is prior art, and details are not described herein again.
  • the AC uses a genetic algorithm to select a channel configuration scheme in which the AC service demand dissatisfaction, the service interruption rate, and the average load are the smallest from the channel configuration scheme set, as the selected channel configuration scheme.
  • the selected configuration scheme can effectively achieve the optimization of the AC service demand dissatisfaction, the service interruption rate, and the average load, and the optimization of the AC service demand dissatisfaction It can effectively improve the experience of users at the edge of the cell.
  • the optimization of the service interruption rate can effectively reduce the cost of spectrum configuration, further improve the user experience, and the optimization of the average load can effectively improve the network capacity.
  • the AC may determine a utility function for performing the genetic algorithm, if the utility function is minmize ⁇ f' UDB (B, M'), f' m-load (B, M'), f' SI (B , B pre , M ') ⁇ , according to the utility function, the channel configuration scheme capable of making the AC service demand dissatisfaction, the service interruption rate and the average load are minimized by the genetic algorithm; if the utility function is minmize ⁇ f' UDB (B, M'), f' m-load (B, M') ⁇ , then the AC can find a set of optimized channel configuration schemes by genetic algorithm according to the utility function, and calculate the optimized channel configuration scheme set The service interruption rate of each channel configuration scheme selects a channel configuration scheme with the smallest service interruption rate from the set of optimized channel configuration schemes.
  • the AC further determines whether the selected channel configuration scheme is superior to the channel configuration scheme currently used by the AC, where the selected channel configuration scheme is AC management.
  • the channel configuration scheme determined by all the sub-areas belonging to the outer zone of the AP therefore, when judging whether the channel configuration scheme in which the selected network performance index is optimal is superior to the channel configuration scheme currently used by the AC, determining the selected channel Whether the configuration scheme is better than the channel configuration method currently used by all sub-areas belonging to the outer zone of the AP managed by the AC.
  • the channel configuration scheme with the selected network performance indicator is used, and if the The selected channel configuration scheme is not superior to the channel configuration method currently used by all sub-regions of the AP managed by the AC, and continues to use the currently used channel configuration scheme.
  • the selected channel configuration scheme is better than the current channel configuration scheme of all the sub-areas belonging to the outer zone of the AP managed by the AC.
  • the service interruption rate and the average load are respectively smaller than the AC service demand dissatisfaction, the service interruption rate, and the average load of the channel configuration scheme currently used by all the sub-areas belonging to the outer zone of the AP managed by the AC.
  • the channel configuration scheme for determining the selection is There are many other ways in which the channel configuration schemes currently used by the sub-areas belonging to the outer zone of the AP managed by the AC may be different, and details are not described herein again.
  • the AC further removes the currently available orthogonal channel of the AC from the selected channel configuration scheme.
  • the obtained orthogonal channel is allocated to all sub-areas belonging to the inner zone of the AP managed by the AC, wherein the sub-area belonging to the inner zone means that the average value of the access signals of the user terminals in the sub-area is greater than or equal to a preset A sub-region of the second value.
  • the AC in the case that the number of orthogonal channels currently available to the AC is greater than a preset first value, the AC receives the service requirements of all the sub-areas belonging to the outer zone that are sent by the AP managed by the AP. Satisfying the obtained business demand, and judging whether channel optimization is required according to the satisfaction of the business demand. In the case of determining that channel optimization is required, the AC calculates all the sub-areas belonging to the outer zone of each AP managed by the AC.
  • Each channel configuration scheme corresponds to the AC service demand dissatisfaction, the service interruption rate, and the average load, and uses the genetic algorithm to select the channel configuration scheme in which the AC service demand satisfaction, the service interruption rate, and the average load are the smallest, if the channel configuration
  • the scheme is superior to the channel configuration scheme currently used by the AC, and the channel configuration scheme is used to comprehensively consider the network service.
  • the time-varying and the experience of the users at the edge of the cell can effectively realize the time-varying of the network service and the optimization of the user experience at the edge of the cell, and improve the performance of the system.
  • an embodiment of an AC structure according to an embodiment of the present invention includes:
  • the receiving module 401 is configured to receive a service requirement satisfaction sent by each AP managed by the AC;
  • the first determining module 402 is configured to determine, after the receiving module 401 receives the service demand satisfaction sent by each AP managed by the AC, whether the channel optimization needs to be performed according to the service requirement satisfaction;
  • the calculation module 403 is configured to: when the first determining module 402 determines that channel optimization is required, calculate a network performance indicator corresponding to each channel configuration scheme in the set of optional channel configuration schemes according to an estimated load of all APs managed by the AC;
  • the selection module 404 is configured to select, after the calculation module 403 obtains the network performance indicator corresponding to each channel configuration scheme in the channel configuration scheme, the channel configuration scheme with the optimal network performance indicator from the channel configuration scheme set.
  • the receiving module 401 in the AC receives the service demand satisfaction sent by each AP managed by the AC; then the first determining module 402 determines whether the channel optimization needs to be performed according to the service demand satisfaction; and if the first judgment is The module 402 determines that the channel optimization needs to be performed, and the calculation module 403 calculates the network performance indicator corresponding to each channel configuration scheme in the optional channel configuration scheme set according to the estimated load of all APs managed by the AC; finally, the selection module 404 from the channel Select the channel configuration scheme with the best network performance indicators in the configuration scheme set.
  • the AC after receiving the service demand satisfaction of the AP managed by the AC, the AC determines whether the channel optimization needs to be performed according to the satisfaction of the service demand of the received AP, and in the case that channel optimization is required, the AC Calculating network performance indicators corresponding to each channel configuration scheme in the selected channel configuration scheme set according to the estimated load of all APs managed by the AC, and selecting a channel configuration scheme with the best network performance indicator from the channel configuration scheme set, which can effectively Realizing the time-varying of network services and optimizing the user experience at the edge of the cell improves the performance of the system.
  • FIG. 5 is another embodiment of the structure of the AC in the embodiment of the present invention, including:
  • the receiving module 401, the first determining module 402, the calculating module 403, and the selecting module 404 are similar to the technical content described in the embodiment shown in FIG. 3, and are not described herein again.
  • the calculation module 403 is specifically configured to calculate an AC service demand dissatisfaction, a service interruption rate, and an AC service demand rate corresponding to each channel configuration scheme in the selected channel configuration scheme set according to the estimated load of all APs managed by the AC. Average load
  • the selecting module 404 is specifically configured to select a channel configuration scheme in which the AC service demand dissatisfaction, the service interruption rate, and the average load are the smallest from the channel configuration scheme set.
  • the AC further includes:
  • the second determining module 501 is configured to determine whether the number of orthogonal channels currently available to the AC is less than or equal to a preset first value
  • the receiving module 401 is specifically configured to: if the second determining module 501 determines that the number of orthogonal channels currently available to the AC is less than or equal to a preset first value, and receives the service demand satisfaction sent by each AP managed by the AC, and the service requirement is satisfactory.
  • the degree is a value obtained by the satisfaction of the guaranteed bit rate service and the satisfaction of the non-guaranteed bit rate service in all sub-areas of the AP.
  • the AC further includes:
  • the first load calculation module 502 is configured to calculate, in the calculation module 403, each channel configuration scheme Calculate the estimated load of each AP based on all sub-areas before the network performance indicators corresponding to the channel configuration schemes;
  • the first load calculation module 502 includes:
  • the first calculation module 5021 is configured to obtain a total transmission duration required for all sub-areas of the AP according to a transmission duration required for each sub-area of the AP, and a transmission duration required for the sub-area is based on a rate of the user terminal in the sub-area.
  • the average value of the demand and the average value of the actual available rate of the user terminal, the load increase parameter of the interference domain and the transmission domain, and the actual transmission duration required for all sub-areas of the neighboring APs of the AP;
  • the second calculating module 5022 is configured to obtain, according to the nominal rate of the AP, the protocol efficiency factor of the media access control MAC layer, and the average of the actually available rates of the user terminals in all sub-areas in the AP, all sub-areas of the AP are available. Total transmission time;
  • the third calculating module 5023 is configured to calculate all the sub-APs after the first computing module 5021 obtains the total transmission duration required for all sub-areas of the AP and the total transmission duration that the second computing module 5022 obtains for all sub-areas of the AP.
  • the calculating module 403 includes:
  • the fourth calculating module 503 is configured to calculate the dissatisfaction of the AC service requirement corresponding to the channel configuration scheme B according to the following manner:
  • f UDB (B, M) is the dissatisfaction of the AC service demand corresponding to the channel configuration scheme B
  • M c is the AC managed AP C a
  • a p is set AC managed by the AP, M being AC management sub-area of all the AP total;
  • the fifth calculating module 504 is configured to calculate a service interruption rate corresponding to the channel configuration scheme B as follows:
  • f SI (B, B pre , M) is the service interruption rate corresponding to channel configuration scheme B
  • b c is the channel allocated for AP c in channel configuration scheme B
  • the channel currently used by AP c The total number of sub-regions of the AC managed AP C based on the estimated load in all sub-regions
  • M c is the AC managed AP C a
  • a p is set AC managed by the AP, M being AC management sub-area of all the AP total;
  • the sixth calculating module 505 is configured to calculate an average load corresponding to the channel configuration scheme B as follows:
  • f m-load (B, M) is the average load corresponding to channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas
  • a p is the set of APs managed by the AC
  • is the number of APs managed by the AC
  • M is the total number of sub-areas of all APs managed by the AC.
  • the receiving module 401 is further configured to: if the second determining module 501 determines that the number of orthogonal channels currently available to the AC is greater than a preset first value, and receives the service demand satisfaction sent by each AP managed by the AC.
  • the service demand satisfaction is a value obtained based on the satisfaction of the guaranteed bit rate service and the satisfaction of the non-guaranteed bit rate service in all the sub-areas belonging to the outer zone of the AP, and the sub-area belonging to the outer zone refers to the user in the sub-area.
  • the average value of the access signal of the terminal is smaller than the sub-area of the second value set in advance.
  • the AC further includes:
  • the second load calculation module 506 is configured to calculate an estimated load of each AP based on all sub-areas belonging to the outer zone before the calculation module 403 calculates the network performance indicator corresponding to each channel configuration scheme in the channel configuration scheme;
  • the second load calculation module 506 includes:
  • the seventh calculation module 5061 is configured to obtain a total transmission duration required for all sub-areas belonging to the outer area of the AP according to a transmission duration required for each sub-area belonging to the outer area of the AP, and a transmission duration of the sub-area belonging to the outer area. Is based on the average of the rate requirements of the user terminals in the sub-areas belonging to the outer zone and the average of the available rates of the user terminals, the load increase parameters of the interference domain and the transmission domain, and all the sub-areas of the adjacent APs of the AP. The actual transmission time required for the area is obtained;
  • the eighth calculating module 5062 is configured to obtain all the APs belonging to the outer zone according to the average rate of the AP, the protocol efficiency factor of the MAC layer, and the average of the actual available rates of the user terminals in the sub-areas belonging to the outer zone of the AP. Total transmission time available for the sub-area;
  • the ninth calculation module 5063 is configured to be in the seventh calculation module 5061 and the eighth calculation module 5062. After obtaining the total transmission duration required for all the sub-areas belonging to the outer area of the AP and the total transmission duration of all the sub-areas belonging to the outer area of the AP, the total transmission duration required for all sub-areas belonging to the outer area of the AP is calculated. The ratio between the total transmission duration available to all sub-areas of the AP belonging to the outer zone, and the ratio is the estimated load of all sub-areas belonging to the outer zone of the AP.
  • the calculating module 403 further includes:
  • the tenth calculation module 507 is configured to calculate the dissatisfaction of the AC service requirement corresponding to the channel configuration scheme B according to the following manner:
  • f' UDB (B, M') is the dissatisfaction of the AC service demand corresponding to the channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • M' c is the number of sub-areas belonging to the outer zone of the AP c managed by the AC
  • a p is the set of APs managed by the AC
  • M' The total number of sub-areas belonging to the outer zone of all APs managed by the AC;
  • the eleventh calculation module 508 is configured to calculate a service interruption rate corresponding to the channel configuration scheme B as follows:
  • f' SI (B, B pre , M') is the service interruption rate corresponding to channel configuration scheme B
  • b c is the channel allocated for AP c in channel configuration scheme B
  • the channel currently used by AP c The AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • M' c is the number of sub-areas belonging to the outer zone of the AP c managed by the AC
  • a p is the set of APs managed by the AC
  • M' The total number of sub-areas belonging to the outer zone of all APs managed by the AC;
  • the twelfth calculating module 509 is configured to calculate an average load corresponding to the channel configuration scheme B as follows:
  • f' m-load (B, M') is the average load corresponding to channel configuration scheme B
  • the AP c managed by the AC is based on the estimated load of all sub-areas belonging to the outer zone
  • a p is the set of APs managed by the AC
  • is the number of APs managed by the AC
  • M' is the number of all APs managed by the AC. The total number of sub-areas belonging to the outer zone.
  • the AC further includes:
  • the allocation module 510 is configured to allocate an orthogonal channel obtained by removing the selected channel configuration scheme from the currently available orthogonal channel of the AC to all the sub-areas belonging to the inner area of the AP managed by the AC, and the sub-area belonging to the inner area is a sub-area
  • the average value of the access signals of the user terminals in the area is greater than or equal to the sub-area of the second value set in advance.
  • the AC further includes:
  • the third determining module 511 is configured to determine, after the selecting module 404 selects the channel configuration scheme, whether the network performance indicator of the selected channel configuration scheme that is optimal for the network performance indicator is better than the network performance of the channel configuration scheme currently used by the AC. index;
  • the executing module 512 is configured to use the selected channel configuration scheme after the third determining module 511 determines that the network performance indicator of the selected channel configuration scheme is better than the network performance indicator of the channel configuration scheme currently used by the AC.
  • the second determining module 501 in the AC determines whether the number of orthogonal channels currently available to the AC is less than or equal to a preset first value; if the second determining module 501 determines the orthogonal channel currently available to the AC.
  • the number of the first value is less than or equal to the preset value, and the receiving module 401 receives the satisfaction of the service demand sent by each AP managed by the AC, and the satisfaction of the service requirement is the satisfaction of the guaranteed bit rate service in all sub-areas of the AP.
  • the first determining module 402 determines whether channel optimization is required according to the service demand satisfaction; if channel optimization is required, the first load calculation module 502 calculates each AP based on The estimated load of all the sub-areas is calculated by: the first calculation module 5021 obtains the total transmission duration required for all sub-areas of the AP according to the transmission duration required for each sub-area of the AP, and the required transmission duration of the sub-areas Is based on the average of the rate requirements of the user terminals in the sub-area and the average value of the actual available rate of the user terminal, the interference domain.
  • the second calculation module 5022 controls the MAC layer protocol efficiency factor and the AP according to the AP's nominal rate, media access control, and the AP.
  • the average of the actually available rates of user terminals in all sub-areas is obtained from the total transmission duration available for all sub-areas of the AP; the third calculation module 5023 obtains the total transmission required for all sub-areas of the AP in the first calculation module 5021.
  • the duration and the second calculation module 5022 obtain the total transmission duration available for all sub-areas of the AP, calculate the ratio between the total transmission duration required for all sub-areas of the AP and the total transmission duration available for all sub-areas of the AP, the ratio is AP based on estimates of all sub-areas load.
  • the calculation module 403 calculates the AC service corresponding to each channel configuration scheme in the optional channel configuration scheme set according to the estimated load of all the sub-areas for all APs managed by the AC.
  • the demand dissatisfaction, the service interruption rate, and the average load are calculated by the fourth calculation module 503 to calculate the AC service demand dissatisfaction of the channel configuration scheme, and the fifth calculation module 504 calculates the service interruption rate, and the sixth calculation module 505 calculates the average.
  • the selection module 404 selects a channel configuration scheme in which the AC service demand dissatisfaction, the service interruption rate, and the average load are the smallest from the channel configuration scheme set, and the third judging module 511 judges that the selected network performance index is optimal.
  • execution module 512 uses the selected channel configuration scheme.
  • the AC after determining that the number of currently available orthogonal channels is less than or equal to a preset first value, the AC satisfies the service demand after receiving the service demand satisfaction sent by the AP managed by the AC.
  • the degree is the value obtained based on the service requirements of all sub-areas of the AP, and the AC will judge whether channel optimization is needed according to the satisfaction of the service demand, and if so, calculate the total transmission required for all sub-areas of each AP managed by the AC.
  • the ratio of the duration to the total transmission duration available to all sub-areas of the AP the ratio being the estimated load of the corresponding AP, and calculating the AC service requirement of each channel configuration scheme in the optional channel configuration scheme according to the obtained estimated load.
  • Dissatisfaction, service interruption rate and average load use the genetic algorithm to select the channel configuration scheme with the smallest AC service demand dissatisfaction, service interruption rate and average load from the set of optional channel configuration schemes, and the minimum in the selection
  • the configuration scheme is superior to the channel configuration scheme currently used by the AC, and the selected channel configuration scheme is used for comprehensive consideration. Optimization edge user experience when degeneration and cell degeneration and cell edge when the user's experience of network services, network traffic can be effectively achieved to improve the performance of the system.
  • the receiving module 401 receives the service demand satisfaction sent by each AP managed by the AC, and the service The demand satisfaction is a value obtained based on the satisfaction of the guaranteed bit rate service and the satisfaction of the non-guaranteed bit rate service in all the sub-areas belonging to the outer zone of the AP, wherein the sub-area belonging to the outer zone refers to the user in the sub-area
  • the average value of the access signal of the terminal is smaller than the sub-region of the second value set in advance, and then the first determining module 402 determines whether channel optimization is required according to the service demand satisfaction; if channel optimization is required, the second load calculation module 506 Calculating an estimated load of each AP based on all the sub-areas belonging to the outer zone; specifically: the seventh calculating module 5061 obtains all the sub-areas of the AP according to the transmission duration required by each sub-area
  • the load increase parameter and the actual transmission duration required for all the sub-areas belonging to the outer zone of the adjacent AP of the AP are obtained;
  • the eighth calculation module 5062 is based on the nominal rate of the AP, the protocol efficiency factor of the MAC layer, and all of the APs.
  • the average of the actual available rates of the user terminals in the sub-areas of the outer zone is obtained from the total transmission time available for all sub-areas belonging to the outer zone of the AP;
  • the ninth calculation module 5063 is in the seventh calculation module 5061 and the eighth calculation module 5062.
  • the calculation module 403 calculates the AC service corresponding to each channel configuration scheme in the optional channel configuration scheme set according to the estimated load of all APs managed by the AC.
  • the demand dissatisfaction, the service interruption rate, and the average load are specifically calculated by the tenth calculation module 507 to calculate the service demand dissatisfaction of the AC, and the eleventh calculation module 508 calculates the service interruption rate of the AC, and the twelfth calculation module 509 Calculate the average load of the AC. And determining, by the third determining module 511, whether the network performance indicator of the channel configuration scheme in which the selected network performance indicator is optimal is better than the network performance indicator of the channel configuration scheme currently used by the AC; and determining, by the third determining module 511, the selected channel. After the network performance indicator of the configuration scheme is superior to the network performance indicator of the channel configuration scheme currently used by the AC, the execution module 512 uses the selected channel configuration scheme.
  • the orthogonal channel obtained by the distribution module 510 removing the currently available orthogonal channel from the selected channel configuration scheme is allocated to all the sub-areas belonging to the inner area of the AP managed by the AC, and the sub-area belonging to the inner area refers to the sub-area.
  • the average value of the access signal of the user terminal within is greater than or equal to the sub-region of the second value set in advance.
  • the AC in the case that the number of orthogonal channels currently available to the AC is greater than a preset first value, the AC receives the service requirements of all the sub-areas belonging to the outer zone that are sent by the AP managed by the AP. Satisfying the obtained business demand, and judging whether channel optimization is required according to the satisfaction of the business demand. In the case of determining that channel optimization is required, the AC calculates all the sub-areas belonging to the outer zone of each AP managed by the AC.
  • Total transmission duration and all genus of AP a ratio between total transmission durations available in the sub-areas of the outer zone, the ratio is an estimated load of the corresponding AP, and calculating, according to the calculated estimated load, each channel configuration scheme corresponding to the selected channel configuration scheme set AC service demand dissatisfaction, service interruption rate and average load, and use the genetic algorithm to select the channel configuration scheme with the minimum service demand satisfaction, service interruption rate and average load of the AC. If the channel configuration scheme is better than the AC currently used.
  • the channel configuration scheme uses the channel configuration scheme to comprehensively consider the time variation of the network service and the experience of the user at the edge of the cell, and can effectively realize the time variation of the network service and the optimization of the user experience at the edge of the cell, thereby improving the performance of the system.
  • an embodiment of an AC structure according to an embodiment of the present invention includes:
  • the receiving device 602 receives the service demand satisfaction sent by each AP managed by the AC; and after the receiving device 602 receives the service demand satisfaction sent by the AP, the processor 601 determines whether it is needed according to the service demand satisfaction degree. Performing channel optimization; and if channel optimization is required, calculating network performance indicators corresponding to each channel configuration scheme in the selected channel configuration scheme set according to the estimated load of all APs managed by the AC; and from the channel configuration scheme The channel configuration scheme in which the network performance indicator is optimal is selected in the set.
  • an embodiment of a structure of a channel configuration system includes:

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Abstract

本发明实施例公开了一种信道配置方法及系统、接入控制器。本发明实施例方法包括：接入控制器AC接收AC管理的每一个接入点AP发送的业务需求满意度；AC根据业务需求满意度判断是否需要进行信道优化；若是，根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标；从信道配置方案集合中选择网络性能指标最优的信道配置方案，可综合考虑网络业务的时变性及小区边缘用户的体验，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。

Description

一种信道配置方法及系统、接入控制器 技术领域
本发明涉及通信技术领域，尤其涉及一种信道配置方法及系统、接入控制器(英文全称为：Access Controller，缩写为：AC)。
背景技术
频谱规划和优化是网络的一个重要课题，其主要目的是最大化频谱的使用率和效率，同时保证边缘小区的体验。基本的方法是尽可能使相邻的小区使用不同的频段，即正交的信道，然而，在无线局域网(英文全称为：Wireless Local Access Network，缩写为：WLAN)中，可用的正交信道有限，邻区将或多或少存在同频干扰，且加上WLAN特有的载波监听机制，将导致小区边缘的用户体验较差。
目前，WLAN使用的是工业、科学和医学(英文全称为：Industrial,Scientific and Medical，缩写为ISM)频段，容易受到外部干扰，加上用户终端负载的动态性，接入点(英文全称为：Access Point，缩写为：AP)的频谱优化的需求日益频繁，传统的频谱优化基于某一特定目标，如最大化系统容量，根据小区的负载情况对小区进行信道分配，可以适应业务的动态性。但这种方法不适应WLAN网络，因为最大化容量容易优先分配信道给离接入点较近的用户终端，没有考虑到WLAN中的小区边缘用户的体验。
在现有的技术中，系统可通过信道重用的方式，可极大的提高小区中心的容量，从而提高网络的容量，然而，用户终端的业务需求和移动的时变性，将使得网络的业务分步并不均价，简单的信道重用的方式并不能适应网络业务的变化，且由于WLAN使用的ISM频段，难以保证小区有所需要的正交信道，将进一步降低小区边缘用户的体验。因此，现有技术中的信道分配方式难以适应网络业务变化及满足小区边缘用户的体验。
发明内容
本发明实施例提供了一种信道配置方法及系统、接入控制器，用于接入控制器进行信道配置，且得到的信道配置方案能够兼顾网络业务的时变性及提高小区边缘用户的体验。
本发明第一方面提供了一种信道配置方法，包括：
接入控制器AC接收所述AC管理的每一个接入点AP发送的业务需求满意度；
所述AC根据所述业务需求满意度判断是否需要进行信道优化；
若是，根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，所述估计负载为对所述AP的负载进行估计得到的值；
从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案。
在第一方面第一种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标包括：
根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载。
结合第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案包括：
从所述信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案。
结合第一方面第一种可能的实现方式或者第一方面第二种可能的实现方式，在第三种可能的实现方式中，所述方法还包括：
判断所述AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
若是，则所述接入控制器AC接收所述AC管理的每一个AP发送的业务需求满意度包括：
接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求 满意度为基于所述AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值。
结合第一方面第三种可能的实现方式，在第四种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网路性能指标之前包括：
按照如下步骤计算每个AP基于所有子区域的估计负载：
根据AP的每一个子区域所需的传输时长得到所述AP的所有子区域所需的总传输时长，所述子区域所需的传输时长是根据所述子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有子区域所需的实际传输时长得到的；
根据所述AP的标称速率、媒体访问控制MAC层的协议效率因子及所述AP中所有子区域内的用户终端的实际可获得的速率的平均值得到所述AP的所有子区域可用的总传输时长；
计算所述AP的所有子区域所需的总传输时长与所述AP的所有子区域可用的总传输时长之间的比值，所述比值为所述AP基于所有子区域的估计负载。
结合第一方面第四种可能的实现方式，在第五种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度包括：
按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000001
其中，fUDB(B,M)为所述信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000002
为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数。
结合第一方面第四种可能的实现方式，在第六种可能的实现方式中，
所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的业务中断率包括：
按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000003
其中，fSI(B,Bpre,M)为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000004
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000005
为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数。
结合第一方面第四种可能的实现方式，在第七种可能的实现方式中，所述根据所述AC管理的所有AP估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的平均负载包括：
按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000006
其中，fm-load(B,M)为所述信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000007
为所述AC管理的APc基于所有子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M为所述AC管理的所有AP的子区域的总数。
结合第一方面第三种可能的实现方式，在第八种可能的实现方式中，所述方法还包括：
若所述AC当前可用的正交信道的数目大于所述预先设置的第一数值，则所述接入控制器AC接收所述AC管理的每一个AP发送的业务需求满意度包括：
接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP所有属于外区的子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值，所述属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域。
结合第一方面第八种可能的实现方式，在第九种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标之前包括：
按照如下步骤计算每个AP基于所有属于外区的子区域的估计负载：
根据AP的每一个属于外区的子区域所需的传输时长得到所述AP的所有属于外区的子区域所需的总传输时长，所述属于外区的子区域的传输时长是根据所述属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；
根据所述AP的标称速率、MAC层的协议效率因子及所述AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到所述AP的所有属于外区的子区域可用的总传输时长；
计算所述AP的所有属于外区的子区域所需的总传输时长与所述AP所有属于外区的子区域可用的总传输时长之间的比值，所述比值为所述AP的所有属于外区的子区域的估计负载。
结合第一方面第九种可能的实现方式，在第十种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度包括：
按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000008
其中，f'UDB(B,M')为所述信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000009
为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数。
结合第一方面第九种可能的实现方式，在第十一种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的业务中断率包括：
按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000010
其中，f'SI(B,Bpre,M')为所述信道配置方案B对应的业务中断率，bc为所 述信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000011
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000012
为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数。
结合第一方面第九种可能的实现方式，在第十二种可能的实现方式中，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的平均负载包括：
按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000013
其中，f'm-load(B,M')为所述信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000014
为所述AC管理的APc基于所有属于外区的子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M'为所述AC管理的所有AP的属于外区的子区域的总数。
结合第一方面第八种可能的实现方式或者第一方面第九种可能的实现方式，在第十三种可能的实现方式中，所述方法还包括：
将所述AC当前可用的正交信道除去选择的所述信道配置方案后得到的正交信道分配给所述AC管理的AP的所有属于内区的子区域，所述属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
在第一方面第十四种可能的实现方式中，所述方法还包括：
判断选择的所述网络性能指标最优的信道配置方案的网络性能指标是否优于所述AC当前所使用的信道配置方案的网络性能指标；
若是，则使用所述选择的所述网络性能指标最优的信道配置方案。
结合第一方面第一种可能的实现方式，在第十五种可能的实现方式中，
所述AC根据所述业务需求满意度判断是否需要进行信道优化包括：
所述AC计算获取到的所述业务需求满意度的平均值；
判断所述平均值是否大于或等于预先设置的第一数值；
若否，则确定需要进行信道优化。
在第一方面第十六种可能的实现方式中，所述AC根据所述业务需求满 意度判断是否需要进行信道优化包括：
所述AC将获取到的所述业务需求满意度分别与预先设置的第四数值进行比较，确定大于或等于所述预先设置的第四数值的所述业务需求满意度的个数；
判断所述个数与AC接收的业务需求满意度的个数的比值是否大于或等于预先设置的第五数值；
若否，则确定需要进行信道优化。
本发明第二方面提供了一种接入控制器AC，包括：
接收模块，用于接收所述AC管理的每一个接入点AP发送的业务需求满意度；
第一判断模块，用于在所述接收模块接收所述AC管理的每一个AP发送的业务需求满意度之后，根据所述业务需求满意度判断是否需要进行信道优化；
计算模块，用于在所述第一判断模块确定需要进行信道优化时，根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，所述估计负载为对所述AP的负载进行估计得到的值；
选择模块，用于在所述计算模块得到所述信道配置方案中每一个信道配置方案对应的网络性能指标之后，从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案。
结合第二方面第一种可能的实现方式，在第二种可能的实现方式中，
所述计算模块具体用于根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载；
所述选择模块具体用于从所述信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案。
结合第二方面第二种可能的实现方式，在第三种可能的实现方式中，所述AC还包括：
第二判断模块，用于判断所述AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
则所述接收模块具体用于若所述第二判断模块确定所述AC当前可用的 正交信道的数目小于或等于预先设置的第一数值，接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值。
结合第二方面第三种可能的实现方式，在第四种可能的实现方式中，所述AC还包括：
第一负载计算模块，用于在所述计算模块计算所述信道配置方案中每一个信道配置方案对应的网络性能指标之前，计算每个AP基于所有子区域的估计负载；
所述第一负载计算模块包括：
第一计算模块，用于根据AP的每一个子区域所需的传输时长得到所述AP的所有子区域所需的总传输时长，所述子区域所需的传输时长是根据所述子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有子区域所需的实际传输时长得到的；
第二计算模块，用于根据所述AP的标称速率、媒体访问控制MAC层的协议效率因子及所述AP中所有子区域内的用户终端的实际可获得的速率的平均值得到所述AP的所有子区域可用的总传输时长；
第三计算模块，用于在所述第一计算模块得到所述AP的所有子区域所需的总传输时长及所述第二计算模块得到所述AP的所有子区域可用的总传输时长之后，计算所述AP的所有子区域所需的总传输时长与所述AP的所有子区域可用的总传输时长之间的比值，所述比值为所述AP基于所有子区域的估计负载。
结合第二方面第四种可能的实现方式，在第五种可能的实现方式中，所述AC还包括：
所述计算模块包括：
第四计算模块，用于按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000015
其中，fUDB(B,M)为所述信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000016
为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数；
第五计算模块，用于按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000017
其中，fSI(B,Bpre,M)为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000018
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000019
为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数；
第六计算模块，用于按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000020
其中，fm-load(B,M)为所述信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000021
为所述AC管理的APc基于所有子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M为所述AC管理的所有AP的子区域的总数。
结合第二方面第一种可能的实现方式，在第六种可能的实现方式中，所述接收模块还用于若所述第二判断模块确定所述AC当前可用的正交信道的数目大于所述预先设置的第一数值，接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP所有属于外区的子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值，所述属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域。
结合第二方面第六种可能的实现方式，在第七种可能的实现方式中，所述AC还包括：
第二负载计算模块，用于在所述计算模块计算所述信道配置方案中每一个信道配置方案对应的网络性能指标之前，计算每个AP基于所有属于外区的子区域的估计负载；
所述第二负载计算模块包括：
第七计算模块，用于根据AP的每一个属于外区的子区域所需的传输时长得到所述AP的所有属于外区的子区域所需的总传输时长，所述属于外区的子区域的传输时长是根据所述属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；
第八计算模块，用于根据所述AP的标称速率、MAC层的协议效率因子及所述AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到所述AP的所有属于外区的子区域可用的总传输时长；
第九计算模块，用于在所述第七计算模块和所述第八计算模块分别得到所述AP的所有属于外区的子区域所需的总传输时长及所述AP的所有属于外区的子区域可用的总传输时长之后，计算所述AP的所有属于外区的子区域所需的总传输时长与所述AP所有属于外区的子区域可用的总传输时长之间的比值，所述比值为所述AP的所有属于外区的子区域的估计负载。
结合第二方面第七种可能的实现方式，在第八种可能的实现方式中，所述计算模块还包括：
第十计算模块，用于按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000022
其中，f'UDB(B,M')为所述信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000023
为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数；
第十一计算模块，用于按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000024
其中，f'SI(B,Bpre,M')为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000025
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000026
为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数；
第十二计算模块，用于按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000027
其中，f'm-load(B,M')为所述信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000028
为所述AC管理的APc基于所有属于外区的子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M'为所述AC管理的所有AP的属于外区的子区域的总数。
结合第二方面第七种可能的实现方式或者第二方面第八种可能的实现方式，在第九种可能的实现方式中，所述AC还包括：
分配模块，用于将所述AC当前可用的正交信道除去选择的所述信道配置方案后得到的正交信道分配给所述AC管理的AP的所有属于内区的子区域，所述属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
在第二方面第十种可能的实现方式中，所述AC还包括：
第三判断模块，用于在所述选择模块选择信道配置方案之后，判断选择的所述网络性能指标最优的信道配置方案的网络性能指标是否优于所述AC当前所使用的信道配置方案的网络性能指标；
执行模块，用于在所述第三判断模块确定所述选择的信道配置方案的网络性能指标优于所述AC当前使用的信道配置方案的网络性能指标之后，使用所述选择的所述网络性能指标最优的信道配置方案。
本发明第三方面提供了一种信道配置系统，包括本发明第二方面提供的接入控制器AC，及该AC管理的所有的接入点AP。
从以上技术方案可以看出，本发明实施例具有以下优点：
AC获取其管理的每一个AP的业务需求满意度之后，将根据获取到的业务需求满意度判断是否需要进行信道优化，且在需要进行信道优化的情况下，AC根据该AC管理的AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，并从信道配置方案集合中选择网络性能指标最优的信道配置方案，可综合考虑网络业务的时变性及小区边缘用户的体验，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
附图说明
图1为本发明实施例中信道配置方法的一个示意图；
图2为本发明实施例中信道配置方法的另一示意图；
图3为本发明实施例中信道配置方法的另一示意图；
图4为本发明实施例中AC的结构的一个示意图；
图5为本发明实施例中AC的结构的另一示意图；
图6为本发明实施例中AC的结构的另一示意图；
图7为本发明实施例中信道配置系统的结构图。
具体实施方式
本发明实施例提供了一种信道配置方法及系统、接入控制器，用于接入控制器进行信道配置，且得到的信道配置方案能够兼顾网络业务的时变性及提高小区边缘用户的体验，提高系统的性能。
请参阅图1，为本发明实施例中一种信道配置方法的实施例，包括：
101、AC接收AC管理的每一个AP发送的业务需求满意度；
在本发明实施例中，AC负责无线网络的接入控制、转发和统计、AP的管理等等，且可对AP进行信道配置。
在本发明实施例中，AP将周期性进行业务需求满意度的计算，并将计算得到的业务需求满意度发送给管理该AP的AC，因此，AC将接收其管理的每一个AP的业务需求满意度，例如：若AC管理5个AP，则AC将接收到该5个AP发送的对应的业务需求满意度。
102、AC根据业务需求满意度判断是否需要进行信道优化；
在本发明实施例中，AC将根据其接收到的AP发送的业务需求满意度 判断是否需要进行信道优化。
103、若需要进行信道优化，根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，估计负载为对AP的负载进行估计得到的值；
在本发明实施例中，若AC根据接收到的其管理的AP的业务需求满意度确定需要进行信道优化，则根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的网络性能指标，其中，估计负载为对AP的负载进行估计得到的值，可选的信道配置方案集合与当前可用的正交信道的数目有关，当前可用的正交信道的数目确定之后，可选的信道配置方案集合即可确定，且可选的信道配置方案集合的确定方式为现有技术，此处不再赘述，其中，网络性能指标可以为：AC业务需求不满意度、业务中断率及平均负载，此外，网络性能指标还可以是其他性能参数，此处不做限定。
104、从信道配置方案集合中选择网络性能指标最优的信道配置方案。
在本发明实施例中，AC在计算得到可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标之后，将从该可选的信道配置方案集合中选择网络性能指标最优的信道配置方案，例如：利用遗传算法从该可选的信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案，则该AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案即为网络性能指标最优的信道配置方案。
在本发明实施例中，AC接收到其管理的AP的业务需求满意度之后，将根据接收到的AP的业务需求满意度判断是否需要进行信道优化，且在需要进行信道优化的情况下，AC根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，并从信道配置方案集合中选择网络性能指标最优的信道配置方案，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
为了更好的理解本发明实施例中的技术方案，请参阅图2，为本发明实施例中，一种信道配置方法的实施例，包括：
201、判断AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
在本发明实施例中，AC将判断当前可用的正交信道的数目是否小于或 等于预先设置的第一数值，例如：若预先设置的第一数值为3，则AC判断当前可用的正交信道的数目是否小于或等于3。
202、若AC当前可用的正交信道的数目小于或等于预先设置的第一数值，则AC接收AC管理的每一个AP发送的业务需求满意度，该业务需求满意度为基于AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值；
在本发明实施例中，若AC当前可用的正交信道的数目小于或等于预先设置的第一数值，则AC接收AC管理的每一个AP发送的业务需求满意度，该业务需求满意度为基于AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值。
在本发明实施例中，每一个AP都将其管理的区域范围划分为多个子区域，在AC当前可用的正交信道的数目小于或等于预先设置的第一数值的情况下，AC可利用AP基于其所有子区域的中的保证比特率业务的满意度及非保证比特率业务的满意度得到该AP的业务需求满意度。
在本发明实施例中，AP可按照如下方式得到基于其所有子区域的业务需求的业务需求满意度：
Sc＝k·SGBR,c+(1-k)Snon-GBR,c,0<k<1
其中，
Figure PCTCN2014086339-appb-000029
其中，Sc为APc基于所有子区域的业务需求的业务需求满意度，SGBR,c为APc的所有子区域内的保证比特率业务(英文全称为：Guarantee the Bit Rate，缩写为：GBR)的满意度，Vi为第i个子区域内的保证比特率业务的实际速率的平均值，Vi,0为第i个子区域内的保证比特率业务的理论速率的平均值；Snon-GBR,c为APc的所有子区域内的非保证比特率业务的满意度，
Figure PCTCN2014086339-appb-000030
为APc的所有子区域内的非保证比特率业务的实际速率的平均值，VAMBR为APc的所有子区域内的非保证比特率业务的累计最大比特率(英文全称为：Aggregated Maximum Bit Rate，缩写为：AMBR)平均值；该AMBR平均值一般为常数，其中，保证比特率业务的实际平均速度为在该统计周期内，AP统计得到的数值，保证比特率业务的理论速率的平均值是同步的常数，取决于该子区域内保证比特率业务的速率需求的平均值。
在本发明实施例中，WLAN的业务可划分为保证比特率业务和非保证比特率业务，AP将其管理范围划分为子区域之后，可对每个子区域内的保证比特率业务和非保证比特率业务进行统计得到上述的AP的所有子区域内的保证比特率业务的满意度和非保证比特率业务的满意度，进而得到AP的业务需求满意度。
在本发明实施例中，若AC当前可用的正交信道的数目大于预先设置的第一数值，则AC接收AC管理的每一个AP发送的业务需求满意度，该业务需求满意度为基于AP的所有属于外区的子区域的业务需求得到的值，其中，属于外区的子区域是指子区域内的用户终端的接入信号的平均值小于预先设置的第二数值的子区域，需要说明的是，在AC当前可用的正交信道的数目大于预先设置的第一数值的情况下进行信道配置的方法将在下一个实施例中进行详细描述，此处不再赘述。
需要说明的是，在本发明实施例中，AC将周期性的进行信道配置，AP可按照AC进行信道配置的周期向AC发送其基于所有子区域的业务需求得到的业务需求满意度和/或其基于所有属于外区的子区域的业务需求得到的业务需求满意度，或者，AC可在需要AP向其发送业务需求满意度时，向其管理的所有AP发送反馈触发消息，该消息中携带需要AP反馈的业务需求满意度的类型，例如：该类型可以是基于AP所有子区域的业务需求得到的业务需求满意度，或者可以是基于AP所有属于外区的子区域的业务需求得到的业务需求满意度。
203、AC根据业务需求满意度判断是否需要进行信道优化，若是，则继续执行步骤204；
在本发明实施例中，AC根据接收到的AP发送的基于AP的所有子区域的业务需求得到的业务需求满意度判断是否需要进行信道优化，其中，AC判断需要进行信道优化的方式有多种，例如：AC可计算接收到的其管理的AP发送的基于所有子区域的业务需求得到的业务需求满意度的平均值；判断该计算得到的业务需求满意度的平均值是否大于或等于预先设置的第一数值；若该平均值大于或等于预先设置的第一数值，则AC可确定不需要进行信道优化；若该平均值小于预先设置的第一数值，则AC可确定需要进行信道优化。举例为：若AC接收到其管理的 5个AP发送的业务需求满意度，分别为0.7、0.8、0.75、0.85、0.7，则计算该5个AP的业务需求满意度的平均值，该平均值为0.76，若预先设置的第一数值为0.7，则可确定AC计算得到的业务需求满意度的平均值0.76大于预先设置的第一数值0.7，则不需要进行信道优化。又例如：AC将接收到的AP发送的基于所有子区域的业务需求得到的业务需求满意度分别与预先设置的第四数值进行比较，确定大于或等于预先设置的第四数值的AP发送的业务需求满意度的个数；并判断大于或等于预先设置的第四数值的AP的业务需求满意度的个数与AC接收到的业务需求满意度的个数的比值是否大于或等于预先设置的第五数值；若大于或等于第五数值，则AC可确定不需要进行信道优化；若小于该第五数值，则AC可确定需要进行信道优化。举例为：若AC接收到其管理的5个AP发送的业务需求满意度，分别为0.6、0.7、0.75、0.8、0.85，若预先设置的第四数值为0.75，则可确定大于或等于预先设置的第四数值0.75的业务需求满意度的个数为3，则3与5的比值为0.6，若预先设置的第五数值为0.7，则比值0.6小于预先设置的第五数值0.7，AC确定需要进行信道优化。
204、若确定需要进行信道优化，则计算AC管理的每一个AP基于所有子区域的估计负载；
在本发明实施例中，若AC确定需要进行信道优化，则AC将统计AC管理的每一个AP基于所有子区域的估计负载，若AC确定不需要进行信道优化，则将继续使用当前的信道配置方案。
在本发明实施例中，AC可按照如下步骤计算每个AP基于所有子区域的估计负载，包括AC根据AP的每一个子区域所需的传输时长得到该AP的所有子区域所需的总传输时长，其中，子区域所需的传输时长是根据该子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及该AP的相邻AP的所有子区域所需的实际传输时长得到的；接着，AC根据该AP的标称速率、MAC层的协议效率因子及该AP中所有子区域内的用户终端的实际可获得的速率的平均值得到该AP的所有子区域可用的总传输时长；最后，计算该AP的所有子区域所需的总传输时长与该AP的所
有子区域可用的总传输时长之间的比值，该比值为该AP的估计负载。
为了更好的理解，以AC计算APc的估计负载为例进行说明，AC可按照如下方式得到APc的所有子区域所需的总传输时长Tc：
Figure PCTCN2014086339-appb-000031
其中，Di为APc中的第i个子区域内的用户终端的速率需求的平均值，Ri为APc中的第i个子区域内的用户终端实际可获得速率的平均值；ANRc为与APc相邻的AP的集合，
Figure PCTCN2014086339-appb-000032
为与APc相邻的APd的所有子区域所需的实际传输时长，ai,d和xc,d为干扰域和传输域的负载增加参数。
其中，APc中的第i个子区域内的用户终端实际可获得的速率的平均值为：
Figure PCTCN2014086339-appb-000033
其中，
Figure PCTCN2014086339-appb-000034
为APc的调度器，ηBW为APc的信道带宽，ηSINR为APc的信噪比系数，W为信道带宽，SINRi为第i个子区域的信噪比。
在本发明实施例中，APc中的第i个子区域的信噪比SINRi为：
Figure PCTCN2014086339-appb-000035
其中，Pc为APc的发射功率，Pd为APd的发射功率，ANRc为与APc相邻的AP的集合，Pnoise为APc的噪声功率；
其中，
Figure PCTCN2014086339-appb-000036
为APc中的第i个子区域到APc的信道增益，
Figure PCTCN2014086339-appb-000037
为APc中的第i个子区域到APd的信道增益，其中，pi,c为APc中第i个子区域内的用户终端接收到的有用信号的平均功率，pi,d为APc中第i个子区域内的用户终端接收到的干扰信号的平均功率。
其中，
Figure PCTCN2014086339-appb-000038
CCAi为第i个子区域的检测门限值；若ai,d的值为0则表示干扰域带来的负载增加，若ai,d的值为1则表示传输域带来的负载增加。
其中，
Figure PCTCN2014086339-appb-000039
需要说明的是，在本发明实施例中的，在计算AP所有子区域所需的总传输时长所使用的Tc的计算公式的第一项考虑了相邻小区之间的信号干扰，第二项考虑了相邻小区传输域的干扰，因此，AC可综合考虑干扰域和传输 域带来的负载增加，使得得到更加准确的估计负载，以便于AC能够有效的进行信道配置的优化。
在本发明实施例中，AC可按照如下方式得到APc的所有子区域可用的总传输时长：
Figure PCTCN2014086339-appb-000040
其中，Ttotal,c为APc的所有子区域可用的总传输时长，Cc为APc的标称速率，ηc为APc的媒体访问控制(英文全称为：Media Access Control，缩写为：MAC)层的协议效率因子，Ravg,c为APc中所有子区域内的用户终端的实际可获得的速率的平均值。
在本发明实施例中，APc中的所有子区域内的用户终端的实际可获得的速率的平均值
Figure PCTCN2014086339-appb-000041
其中，Mc为APc的子区域的总数，Ri为第i个子区域内的用户终端实际可获得的速率的平均值。
在本发明实施例中，AP所需的总传输时长与AP可用的总传输时长的比值即为该AP的估计负载，计算公式为：
Figure PCTCN2014086339-appb-000042
该估计负载考虑了WLAN的载波监听特性和同频干扰，极大的提高了负载估计的准确性，能够有效的反应与信道之间的关系，使得AC能够有效的进行信道配置。
205、根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载；
在本发明实施例中，AC在计算得到每一个AP基于其所有子区域的速率得到的估计负载之后，将根据计算得到的每一个估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载。
在本发明实施例中，可选的信道配置方案集合与当前可用的正交信道的数目有关，当前可用的正交信道的数目确定之后，可选的信道配置方案集合即可确定，且可选的信道配置方案集合的确定方式为现有技术，此处不再赘述。
为了更好的理解，下面将以计算信道配置方案B的AC业务需求不满意度、业务中断率及平均负载的为例说明AC业务需求不满意度、业务中断率及平均负载的计算方法，包括：
按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000043
其中，fUDB(B,M)为信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000044
为AC管理的APc基于所有子区域的估计负载，Mc为AC管理的APc的子区域的总数，Ap为AC所管理的AP的集合，M为AC管理的所有AP的子区域的总数。
按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000045
其中，fSI(B,Bpre,M)为信道配置方案B对应的业务中断率，bc为信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000046
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000047
为AC管理APc的基于所有子区域的估计负载，Mc为AC管理的APc的子区域的总数，Ap为AC所管理的AP的集合，M为AC管理的所有AP的子区域的总数。
按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000048
其中，fm-load(B,M)为信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000049
为AC管理的APc基于所有子区域的估计负载，Ap为AC所管理的AP的集合，|Ap|为AC管理的AP的数目，M为AC管理的所有AP的子区域的总数。
206、利用遗传算法从信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案；
在本发明实施例中，AC将利用遗传算法从信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案，作为选择的信道配置方案。
在本发明实施例中，该选择的信道配置方案能够有效实现对AC业务需求不满意度、业务中断率及平均负载的优化，且AC业务需求不满意度的优化能够有效提升小区边缘用户的体验，业务中断率的优化能够有效减少频谱配置的代价，进一步改善用户体验，且平均负载的优化能够有效提升网络容量。
在本发明实施例中，AC可确定进行遗传算法的效用函数，若效用函数为minmize{fUDB，fm-load，fSI}，则可根据该效用函数通过遗传算法找到能够 使得AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案；若效用函数为minmize{fUDB，fm-load}，则AC可根据该效用函数通过遗传算法找到优化的信道配置方案的集合，并计算该优化的信道配置方案集合中的每一个信道配置方案的业务中断率，从该优化的信道配置方案的集合中选择业务中断率最小的信道配置方案。
需要说明的是，在本发明实施例中，利用遗传算法选择满足条件的信道配置方案的方法为现有技术，此处不再赘述。
207、判断选择的信道配置方案是否优于AC当前所使用的信道配置方案；
208、若是，则使用选择的信道配置方案。
在本发明实施例中，AC在确定选择的信道配置方案之后，还将判断该选择的信道配置方案是否优于AC当前所使用的信道配置方案，且若确定该选择的信道配置方案优于AC当前所使用的信道配置方案，则将使用该选择的信道配置方案，若确定该选择的信道配置方案并未优于AC当前所使用的信道配置方案，则继续使用当前使用的信道配置方案。需要说明的是，在本发明实施例中，AC是基于AP的所有子区域进行信道配置的，因此，该选择的信道配置方案是基于AC管理的AP的所有子区域得到的信道配置方案，与该选择的信道配置方案进行比较的AC当前所使用的信道配置方案也是指的是AC管理的AP的所有子区域当前使用的信道配置方案。
在本发明实施例中，AC判断选择的信道配置方案是否优于AC当前所使用的信道配置方案的方法可以为：AC判断选的信道配置方案的AC业务需求不满意度、业务中断率及平均负载是否均分别小于AC当前所使用的信道配置方案的AC业务需求不满意度、业务中断率及平均负载，需要说明的是，AC还可使用其他的方式确定选择的信道配置方案是否优于AC当前所使用的信道配置方案，此处不再赘述。
在本发明实施例中，AC在确定当前可用的正交信道的数目小于或等于预先设置的第一数值的情况下，AC接收到其管理的AP发送的业务需求满意度之后，该业务需求满意度为基于AP的所有子区域的业务需求得到的值，且AC将根据该业务需求满意度判断是否需要进行信道优化，若是，则计算AC管理的每一个AP的所有子区域所需的总传输时长与AP的所有子区域可用的总传输时长之间的比值，该比值为对应AP的估计负载，并根据得到的 估计负载计算可选的信道配置方案中的每一个信道配置方案的AC业务需求不满意度、业务中断率及平均负载，利用遗传算法从可选的信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案，且在该选择的最小配置方案优于AC当前使用的信道配置方案的情况下，使用该选择的信道配置方案，综合考虑了网络业务的时变性及小区边缘用户的体验，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
在图2所示实施例中，描述了在AC当前可使用的正交信道的数目小于或等于预先设置的第一数值的情况下，AC进行信道配置的方法，下面将详细描述在AC当前可使用的正交信道的数目大于该预先设置的第一数值的情况下，AC进行信道配置的方法，请参阅图3，包括：
301、判断AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
在本发明实施例中，AC将判断当前可用的正交信道的数目是否小于或等于预先设置的第一数值，例如：若预先设置的第一数值为3，则AC判断当前可用的正交信道的数目是否小于或等于3。
302、若AC当前可用的正交信道的数目大于预先设置的第一数值，则AC接收AC管理的每一个AP发送的业务需求满意度，该业务需求满意度为基于AP的所有属于外区的子区域中的保证比特率月的满意度及非保证比特率月的满意度得到的值；
在本发明实施例中，若AC当前可用的正交信道的数目大于预先设置的第一数值，则AC可接收AC管理的每一个AP发送的业务需求满意度，该业务需求满意度为基于AP所有属于外区的子区域的业务需求得到的值，其中，属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域。
在本发明实施例中，AP按照如下方式得到AP基于所有属于外区的子区域的业务需求的业务需求满意度：
S'c＝k·S'GBR,c+(1-k)S'non-GBR,c,0<k<1
其中，
Figure PCTCN2014086339-appb-000050
其中，S'c为APc基于所有属于外区的子区域的业务需求的业务需求满意 度，S'GBR,c为APc的所有属于外区的子区域内的保证比特率业务的满意度，V′i为第i个属于外区的子区域内的保证比特率业务的实际速率的平均值，V'i,0为第i个属于外区的子区域内的保证比特率业务的理论速率的平均值；S'non-GBR,c为APc的所有属于外区的子区域内的非保证比特率业务的满意度，
Figure PCTCN2014086339-appb-000051
为APc的所有属于外区的子区域内的非保证比特率业务的实际速率的平均值，V'AMBR为APc的所有属于外区的子区域内的非保证比特率业务的AMBR平均值。
303、AC根据业务需求满意度判断是否需要进行信道优化，若是，则继续执行步骤304；
在本发明实施例中，AC根据AP发送的基于AP的所有属于外区的子区域的业务需求得到的业务需求满意度判断是否需要进行信道优化，其中，AC判断需要进行信道优化的方式有多种，例如：AC可计算接收到的其管理的AP发送的基于AP的所有属于外区的子区域的业务需求得到的业务需求满意度的平均值；判断该计算得到的平均值是否大于或等于预先设置的第一数值；若该平均值大于或等于预先设置的第一数值，则AC可确定不需要进行信道优化；若该平均值小于预先设置的第一数值，则AC可确定需要进行信道优化。举例为：若AC接收到其管理的5个AP发送的业务需求满意度，分别为0.7、0.8、0.75、0.85、0.7，则计算该5个AP的业务需求满意度的平均值，该平均值为0.76，若预先设置的第一数值为0.7，则可确定AC计算得到的业务需求满意度的平均值0.76大于预先设置的第一数值0.7，则不需要进行信道优化。又例如：AC将接收到的AP发送的基于AP的所有属于外区的子区域的业务需求得到的业务需求满意度分别与预先设置的第四数值进行比较，确定大于或等于预先设置的第四数值的AP发送的业务需求满意度的个数；并判断大于或等于预先设置的第四数值的AP的业务需求满意度的个数与AC接收到的业务需求满意度的个数的比值是否大于或等于预先设置的第五数值；若大于或等于第五数值，则AC可确定不需要进行信道优化；若小于该第五数值，则AC可确定需要进行信道优化。举例为：若AC接收到其管理的5个AP发送的业务需求满意度，分别为0.6、0.7、0.75、0.8、0.85，若预先设置的第四数值为0.75，则可确定大于或等于预先设置的第四数值0.75的业务需求满意度的个数为3，则3与5的比值为0.6，若预先设置的第五数值为0.7，则比值0.6小于预先设置的第五数值0.7，AC确定需要进行信道优化。
304、若确定需要进行信道优化，则计算AC管理的每一个AP基于所有属于外区的子区域的估计负载；
在本发明实施例中，若AC确定需要进行信道优化，则将计算AC管理的每一个AP基于所有属于外区的子区域的估计负载，具体可以为：根据AP的每一个属于外区的子区域所需的传输时长得到该AP的所有属于外区的子区域所需的总传输时长，其中，属于外区的子区域的传输时长是根据该属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及该AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；并根据该AP的标称速率、MAC层的协议效率因子及该AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到该AP的所有属于外区的子区域可用的传输时长；计算该AP的所有属于外区的子区域所需的总传输时长与该AP所有属于外区的子区域可用的总传输时长之间的比值，该比值即为该AP基于所有属于外区的子区域的估计负载。
以AC计算APc的估计负载为例进行说明，AC可按照如下方式得到APc的所有属于外区的子区域所需的总传输时长T'c为：
Figure PCTCN2014086339-appb-000052
其中，D'i为APc中的第i个属于外区的子区域内的用户终端的速率需求的平均值，R'i为APc中的第i个属于外区的子区域内的用户终端实际可获得的速率的平均值；ANRc为与APc相邻的AP的集合，
Figure PCTCN2014086339-appb-000053
为与APc相邻的APd的所有属于外区的子区域所需的实际传输时长，ai,d和xc,d为干扰域和传输域的负载增加参数。
其中，APc中的第i个属于外区的子区域内的用户终端实际可获得的速率的平均值为：
Figure PCTCN2014086339-appb-000054
其中，
Figure PCTCN2014086339-appb-000055
为APc的调度器，ηBW为APc的信道带宽，ηSINR为APc的信噪比系数，W为信道带宽，SINRi为第i个属于外区的子区域的信噪比。
在本发明实施例中，APc中的第i个属于外区的子区域的信噪比SINRi为：
Figure PCTCN2014086339-appb-000056
其中，Pc为APc的发射功率，Pd为APd的发射功率，ANRc为与APc相邻的 AP的集合，Pnoise为APc的噪声功率；
其中，
Figure PCTCN2014086339-appb-000057
为APc中的第i个属于外区的子区域到APc的信道增益，
Figure PCTCN2014086339-appb-000058
为APc中的第i个属于外区的子区域到APd的信道增益，其中，pi,c为APc中的第i个属于外区的子区域内的用户终端接收到的有用信号的平均功率，pi,d为APc中的第i个属于外区的子区域内的用户终端接收到的干扰信号的平均功率。
其中，
Figure PCTCN2014086339-appb-000059
其中，P'i,d为第i个属于外区的子区域内的用户终端接收到的与APc相邻的APd的功率的平均值，CCA'i为第i个属于外区的子区域的检测门限值；
其中，
Figure PCTCN2014086339-appb-000060
其中，AP的所有属于外区的子区域可用的总传输时长T'total,c为：
Figure PCTCN2014086339-appb-000061
其中，Cc为APc的标称速率，ηc为APc的媒体访问控制MAC层的协议效率因子，R'avg,c为APc中所有属于外区的子区域内的用户终端的实际可获得的速率的平均值。
305、根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载；
在本发明实施例中，AC将根据计算得到的其管理的AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案的AC业务需求不满意度、业务中断率及平均负载，该AP的估计负载为该AP基于所有属于外区的子区域的估计负载。
为了更好的理解，下面将以计算信道配置方案B的AC业务需求不满意度、业务中断率及平均负载的为例说明业务需求满意度、业务中断率及平均负载的计算方法，包括：
按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000062
其中，f'UDB(B,M')为信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000063
为AC管理的APc基于所有属于外区的子区域的估计负载，M'c为AC管理的APc的属于外区的子区域的数目，Ap为AC所管理的AP的集合，M'为AC管理的所有AP的属于外区的子区域的总数。
按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000064
其中，f'SI(B,Bpre,M')为信道配置方案B对应的业务中断率，bc为信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000065
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000066
为AC管理的APc基于所有属于外区的子区域的估计负载，M'c为AC管理的APc的属于外区的子区域的数目，Ap为AC所管理的AP的集合，M'为AC管理的所有AP的属于外区的子区域的总数。
按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000067
其中，f'm-load(B,M')为信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000068
为AC管理的APc基于所有属于外区的子区域的估计负载，Ap为AC所管理的AP的集合，|Ap|为AC管理的AP的数目，M'为AC管理的所有AP的属于外区的子区域的总数。
在本发明实施例中，可选的信道配置方案集合与当前可用的正交信道的数目有关，当前可用的正交信道的数目确定之后，可选的信道配置方案集合即可确定，且可选的信道配置方案集合的确定方式为现有技术，此处不再赘述。
306、利用遗传算法从信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案；
在本发明实施例中，AC将利用遗传算法从信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案，作为选择的信道配置方案。
在本发明实施例中，该选择的配置方案能够有效实现对AC业务需求不满意度、业务中断率及平均负载的优化，且AC业务需求不满意度的优化能 够有效提升小区边缘用户的体验，业务中断率的优化能够有效减少频谱配置的代价，进一步改善用户体验，且平均负载的优化能够有效提升网络容量。
在本发明实施例中，AC可确定进行遗传算法的效用函数，若效用函数为minmize{f'UDB(B,M')，f'm-load(B,M')，f'SI(B,Bpre,M')}，则可根据该效用函数通过遗传算法找到能够使得AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案；若效用函数为minmize{f'UDB(B,M')，f'm-load(B,M')}，则AC可根据该效用函数通过遗传算法找到优化的信道配置方案的集合，并计算该优化的信道配置方案集合中的每一个信道配置方案的业务中断率，从该优化的信道配置方案的集合中选择业务中断率最小的信道配置方案。
需要说明的是，在本发明实施例中，利用遗传算法选择满足条件的信道配置方案的方法为现有技术，此处不再赘述。
307、判断选择的信道配置方案是否优于AC当前所使用的信道配置方案；
308、若是，则使用选择的信道配置方案。
在本发明实施例中，AC在确定选择的信道配置方案之后，还将判断该选择的信道配置方案是否优于AC当前所使用的信道配置方案，其中，该选择的信道配置方案为为AC管理的AP的所有属于外区的子区域确定的信道配置方案，因此，在判断选择的网络性能指标最优的信道配置方案是否优于AC当前所使用的信道配置方案时，是判断该选择的信道配置方案是否优于该AC管理的AP的所有属于外区的子区域当前使用的信道配置方法。且若确定该选择的信道配置方案优于该AC管理的AP的所有属于外区的子区域当前使用的信道配置方案，则将使用该选择的网络性能指标最优的信道配置方案，若确定该选择的信道配置方案并未优于该AC管理的AP的所有属于外区的子区域当前使用的信道配置方法，则继续使用当前使用的信道配置方案。
在本发明实施例中，该选择的信道配置方案优于该AC管理的AP的所有属于外区的子区域当前使用的信道配置方案是指：该选择的信道配置方案AC业务需求不满意度、业务中断率及平均负载是均分别小于AC管理的AP的所有属于外区的子区域当前使用的信道配置方案的AC业务需求不满意度、业务中断率及平均负载。需要说明的是，确定该选择的信道配置方案是 否优于该AC管理的AP的所有属于外区的子区域当前使用的信道配置方案的方式还可以有其他很多种，此处不再赘述。
需要说明的是，在确定AC管理的AP的所有属于外区的子区域的信道配置方案即选择的信道配置方案之后，AC还将该AC当前可用的正交信道除去该选择的信道配置方案后得到的正交信道分配给该AC管理的AP的所有属于内区的子区域，其中，属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
在本发明实施例中，在AC当前可用的正交信道的数目大于预先设置的第一数值的情况下，AC接收其管理的AP发送的基于该AP的所有属于外区的子区域的业务需求得到的业务需求满意度，并根据该业务需求满意度判断是否需要进行信道优化，在确定需要进行信道优化的情况下，AC计算其管理的每一个AP的所有属于外区的子区域所需的总传输时长与AP的所有属于外区的子区域可用的总传输时长之间的比值，该比值为对应的AP的估计负载，且根据计算得到的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载，并利用遗传算法选择AC的业务需求满意度、业务中断率及平均负载均最小的信道配置方案，若该信道配置方案优于AC当前使用的信道配置方案，则使用该信道配置方案，能够综合考虑了网络业务的时变性及小区边缘用户的体验，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
请参阅图4，为本发明实施例中AC的结构的实施例，包括：
接收模块401，用于接收AC管理的每一个AP发送的业务需求满意度；
第一判断模块402，用于在接收模块401接收AC管理的每一个AP发送的业务需求满意度之后，根据业务需求满意度判断是否需要进行信道优化；
计算模块403，用于在第一判断模块402确定需要进行信道优化时，根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标；
选择模块404，用于在计算模块403得到信道配置方案中每一个信道配置方案对应的网络性能指标之后，从信道配置方案集合中选择网络性能指标最优的信道配置方案。
在本发明实施例中，AC中的接收模块401接收AC管理的每一个AP发送的业务需求满意度；接着第一判断模块402根据业务需求满意度判断是否需要进行信道优化；且若第一判断模块402确定需要进行信道优化，则由计算模块403根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标；最后，选择模块404从信道配置方案集合中选择网络性能指标最优的信道配置方案。
在本发明实施例中，AC接收到其管理的AP的业务需求满意度之后，将根据接收到的AP的业务需求满意度判断是否需要进行信道优化，且在需要进行信道优化的情况下，AC根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，并从信道配置方案集合中选择网络性能指标最优的信道配置方案，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
为了更好的理解本发明实施例中的AC，请参阅图5，为本发明实施例中的AC的结构的另一实施例，包括：
如图4所示实施例中描述的接收模块401，第一判断模块402、计算模块403、选择模块404，且与图3所示实施例中描述的技术内容相似，此处不再赘述。
在本发明实施例中，计算模块403具体用于根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载；
选择模块404具体用于从信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案。
在本发明实施例中，AC还包括：
第二判断模块501，用于判断AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
则接收模块401具体用于若第二判断模块501确定AC当前可用的正交信道的数目小于或等于预先设置的第一数值，接收AC管理的每一个AP发送的业务需求满意度，业务需求满意度为基于AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值。
在本发明实施例中，AC还包括：
第一负载计算模块502，用于在计算模块403计算信道配置方案中每一 个信道配置方案对应的网络性能指标之前，计算每个AP基于所有子区域的估计负载；
第一负载计算模块502包括：
第一计算模块5021，用于根据AP的每一个子区域所需的传输时长得到AP的所有子区域所需的总传输时长，子区域所需的传输时长是根据子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及AP的相邻AP的所有子区域所需的实际传输时长得到的；
第二计算模块5022，用于根据AP的标称速率、媒体访问控制MAC层的协议效率因子及AP中所有子区域内的用户终端的实际可获得的速率的平均值得到AP的所有子区域可用的总传输时长；
第三计算模块5023，用于在第一计算模块5021得到AP的所有子区域所需的总传输时长及第二计算模块5022得到AP的所有子区域可用的总传输时长之后，计算AP的所有子区域所需的总传输时长与AP的所有子区域可用的总传输时长之间的比值，比值为AP基于所有子区域的估计负载。
在本发明实施例中，计算模块403包括：
第四计算模块503，用于按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000069
其中，fUDB(B,M)为信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000070
为AC管理的APc基于所有子区域的估计负载，Mc为AC管理的APc的子区域的总数，Ap为AC所管理的AP的集合，M为AC管理的所有AP的子区域的总数；
第五计算模块504，用于按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000071
其中，fSI(B,Bpre,M)为信道配置方案B对应的业务中断率，bc为信道配 置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000072
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000073
为AC管理的APc基于所有子区域的估计负载，Mc为AC管理的APc的子区域的总数，Ap为AC所管理的AP的集合，M为AC管理的所有AP的子区域的总数；
第六计算模块505，用于按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000074
其中，fm-load(B,M)为信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000075
为AC管理的APc基于所有子区域的估计负载，Ap为AC所管理的AP的集合，|Ap|为AC管理的AP的数目，M为AC管理的所有AP的子区域的总数。
在本发明实施例中，接收模块401还用于若第二判断模块501确定AC当前可用的正交信道的数目大于预先设置的第一数值，接收AC管理的每一个AP发送的业务需求满意度，业务需求满意度为基于AP所有属于外区的子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值，属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域。
在本发明实施例中，AC还包括：
第二负载计算模块506，用于在计算模块403计算信道配置方案中每一个信道配置方案对应的网络性能指标之前，计算每个AP基于所有属于外区的子区域的估计负载；
第二负载计算模块506包括：
第七计算模块5061，用于根据AP的每一个属于外区的子区域所需的传输时长得到AP的所有属于外区的子区域所需的总传输时长，属于外区的子区域的传输时长是根据属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；
第八计算模块5062，用于根据AP的标称速率、MAC层的协议效率因子及AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到AP的所有属于外区的子区域可用的总传输时长；
第九计算模块5063，用于在第七计算模块5061和第八计算模块5062 分别得到AP的所有属于外区的子区域所需的总传输时长及AP的所有属于外区的子区域可用的总传输时长之后，计算AP的所有属于外区的子区域所需的总传输时长与AP所有属于外区的子区域可用的总传输时长之间的比值，比值为AP的所有属于外区的子区域的估计负载。
在本发明实施例中，计算模块403还包括：
第十计算模块507，用于按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
Figure PCTCN2014086339-appb-000076
其中，f'UDB(B,M')为信道配置方案B对应的AC业务需求不满意度，
Figure PCTCN2014086339-appb-000077
为AC管理的APc基于所有属于外区的子区域的估计负载，M'c为AC管理的APc的属于外区的子区域的数目，Ap为AC所管理的AP的集合，M'为AC管理的所有AP的属于外区的子区域的总数；
第十一计算模块508，用于按照如下方式计算信道配置方案B对应的业务中断率：
Figure PCTCN2014086339-appb-000078
其中，f'SI(B,Bpre,M')为信道配置方案B对应的业务中断率，bc为信道配置方案B中为APc分配的信道，
Figure PCTCN2014086339-appb-000079
为APc当前使用的信道，
Figure PCTCN2014086339-appb-000080
为AC管理的APc基于所有属于外区的子区域的估计负载，M'c为AC管理的APc的属于外区的子区域的数目，Ap为AC所管理的AP的集合，M'为AC管理的所有AP的属于外区的子区域的总数；
第十二计算模块509，用于按照如下方式计算信道配置方案B对应的平均负载：
Figure PCTCN2014086339-appb-000081
其中，f'm-load(B,M')为信道配置方案B对应的平均负载，
Figure PCTCN2014086339-appb-000082
为AC管理的APc基于所有属于外区的子区域的估计负载，Ap为AC所管理的AP的集合，|Ap|为AC管理的AP的数目，M'为AC管理的所有AP的属于外区的子 区域的总数。
在本发明实施例中，AC还包括：
分配模块510，用于将AC当前可用的正交信道除去选择的信道配置方案后得到的正交信道分配给AC管理的AP的所有属于内区的子区域，属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
在本发明实施例中，AC还包括：
第三判断模块511，用于在选择模块404选择信道配置方案之后，判断选择的所述网络性能指标最优的信道配置方案的网络性能指标是否优于AC当前所使用的信道配置方案的网络性能指标；
执行模块512，用于在第三判断模块511确定选择的信道配置方案的网络性能指标优于AC当前使用的信道配置方案的网络性能指标之后，使用选择的信道配置方案。
在本发明实施例中，AC中的第二判断模块501判断AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；若第二判断模块501确定AC当前可用的正交信道的数目小于或等于预先设置的第一数值，则接收模块401接收AC管理的每一个AP发送的业务需求满意度，该业务需求满意度为基于AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值；接着第一判断模块402根据业务需求满意度判断是否需要进行信道优化；若需要进行信道优化，则第一负载计算模块502计算每个AP基于所有子区域的估计负载，具体的计算方式为：第一计算模块5021根据AP的每一个子区域所需的传输时长得到AP的所有子区域所需的总传输时长，子区域所需的传输时长是根据子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及AP的相邻AP的所有子区域所需的实际传输时长得到的；第二计算模块5022根据AP的标称速率、媒体访问控制MAC层的协议效率因子及AP中所有子区域内的用户终端的实际可获得的速率的平均值得到AP的所有子区域可用的总传输时长；第三计算模块5023在第一计算模块5021得到AP的所有子区域所需的总传输时长及第二计算模块5022得到AP的所有子区域可用的总传输时长之后，计算AP的所有子区域所需的总传输时长与AP的所有子区域可用的总传输时长之间的比值，比值为AP基于所有子区域的估计 负载。AC在计算得到AC管理的每一个AP的估计负载之后，计算模块403根据AC管理的所有AP基于所有子区域的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载，具体由第四计算模块503计算信道配置方案的AC业务需求不满意度，由第五计算模块504计算业务中断率，由第六计算模块505计算平均负载，接着，选择模块404从信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案，并由第三判断模块511判断选择的网络性能指标最优的信道配置方案的网络性能指标是否优于AC当前所使用的信道配置方案的网络性能指标；且在第三判断模块511确定选择的信道配置方案的网络性能指标优于AC当前使用的信道配置方案的网络性能指标之后，执行模块512使用选择的信道配置方案。
在本发明实施例中，AC在确定当前可用的正交信道的数目小于或等于预先设置的第一数值的情况下，AC接收到其管理的AP发送的业务需求满意度之后，该业务需求满意度为基于AP的所有子区域的业务需求得到的值，且AC将根据该业务需求满意度判断是否需要进行信道优化，若是，则计算AC管理的每一个AP的所有子区域所需的总传输时长与AP的所有子区域可用的总传输时长之间的比值，该比值为对应AP的估计负载，并根据得到的估计负载计算可选的信道配置方案中的每一个信道配置方案的AC业务需求不满意度、业务中断率及平均负载，利用遗传算法从可选的信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案，且在该选择的最小配置方案优于AC当前使用的信道配置方案的情况下，使用该选择的信道配置方案，综合考虑了网络业务的时变性及小区边缘用户的体验，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
在本发明实施例中，若第二判断模块501确定AC当前可用的正交信道的数目大于预先设置的第一数值，则接收模块401接收AC管理的每一个AP发送的业务需求满意度，业务需求满意度为基于AP所有属于外区的子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值，其中，属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域，接着第一判断模块402根据业务需求满意度判断是否需要进行信道优化；若需要进行信道优化，第二负载计算模块506 计算每个AP基于所有属于外区的子区域的估计负载；具体的：第七计算模块5061，根据AP的每一个属于外区的子区域所需的传输时长得到AP的所有属于外区的子区域所需的总传输时长，属于外区的子区域的传输时长是根据属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；第八计算模块5062根据AP的标称速率、MAC层的协议效率因子及AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到AP的所有属于外区的子区域可用的总传输时长；第九计算模块5063在第七计算模块5061和第八计算模块5062分别得到AP的所有属于外区的子区域所需的总传输时长及AP的所有属于外区的子区域可用的总传输时长之后，计算AP的所有属于外区的子区域所需的总传输时长与AP所有属于外区的子区域可用的总传输时长之间的比值，比值为AP的所有属于外区的子区域的估计负载。AC在得到基于AP的所有属于外区的子区域的估计负载之后，由计算模块403根据AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载，具体的由第十计算模块507计算AC的业务需求不满意度，由第十一计算模块508计算AC的业务中断率，由第十二计算模块509计算AC的平均负载。并由第三判断模块511判断选择的网络性能指标最优的信道配置方案的网络性能指标是否优于AC当前所使用的信道配置方案的网络性能指标；且在第三判断模块511确定选择的信道配置方案的网络性能指标优于AC当前使用的信道配置方案的网络性能指标之后，执行模块512使用选择的信道配置方案。且由分配模块510将AC当前可用的正交信道除去选择的信道配置方案后得到的正交信道分配给AC管理的AP的所有属于内区的子区域，属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
在本发明实施例中，在AC当前可用的正交信道的数目大于预先设置的第一数值的情况下，AC接收其管理的AP发送的基于该AP的所有属于外区的子区域的业务需求得到的业务需求满意度，并根据该业务需求满意度判断是否需要进行信道优化，在确定需要进行信道优化的情况下，AC计算其管理的每一个AP的所有属于外区的子区域所需的总传输时长与AP的所有属 于外区的子区域可用的总传输时长之间的比值，该比值为对应的AP的估计负载，且根据计算得到的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度、业务中断率及平均负载，并利用遗传算法选择AC的业务需求满意度、业务中断率及平均负载均最小的信道配置方案，若该信道配置方案优于AC当前使用的信道配置方案，则使用该信道配置方案，能够综合考虑了网络业务的时变性及小区边缘用户的体验，能够有效实现网络业务的时变性及小区边缘用户体验的优化，提高了系统的性能。
请参阅图6，为本发明实施例中AC的结构的一个实施例，包括：
处理器601、接收装置602、发送装置603、存储器604；
其中，接收装置602接收所述AC管理的每一个AP发送的业务需求满意度；且在接收装置602接收到AP发送的业务需求满意度之后，处理器601根据所述业务需求满意度判断是否需要进行信道优化；且若需要进行信道优化，根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标；并从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案。
请参阅图7，为本发明实施例中信道配置系统的结构的实施例，包括：
接入控制器701、及该接入控制器701管理的所有的接入点702，其中，接入控制器701为图4至图6中任意一个图所示实施例中描述的AC。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上对本发明所提供的一种信道配置方法及系统、接入控制器进行了详细介绍，对于本领域的一般技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (28)

  1. 一种信道配置方法，其特征在于，包括：
    接入控制器AC接收所述AC管理的每一个接入点AP发送的业务需求满意度；
    所述AC根据所述业务需求满意度判断是否需要进行信道优化；
    若是，根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，所述估计负载为对所述AP的负载进行估计得到的值；
    从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案。
  2. 根据权利要求1所述的信道配置方法，其特征在于，所述网络性能指标包括：AC业务需求不满意度、业务中断率及平均负载。
  3. 根据权利要求2所述的信道配置方法，其特征在于，所述从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案包括：
    从所述信道配置方案集合中选择AC业务需求不满意度、业务中断率及平均负载均最小的信道配置方案。
  4. 根据权利要求2或3所述的信道配置方法，其特征在于，所述方法还包括：
    判断所述AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
    若是，则所述接入控制器AC接收所述AC管理的每一个AP发送的业务需求满意度包括：
    接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值。
  5. 根据权利要求4所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网路性能指标之前包括：
    按照如下步骤计算每个AP基于所有子区域的估计负载：
    根据AP的每一个子区域所需的传输时长得到所述AP的所有子区域所 需的总传输时长，所述子区域所需的传输时长是根据所述子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有子区域所需的实际传输时长得到的；
    根据所述AP的标称速率、媒体访问控制MAC层的协议效率因子及所述AP中所有子区域内的用户终端的实际可获得的速率的平均值得到所述AP的所有子区域可用的总传输时长；
    计算所述AP的所有子区域所需的总传输时长与所述AP的所有子区域可用的总传输时长之间的比值，所述比值为所述AP基于所有子区域的估计负载。
  6. 根据权利要求5所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度包括：
    按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
    Figure PCTCN2014086339-appb-100001
    其中，fUDB(B,M)为所述信道配置方案B对应的AC业务需求不满意度，
    Figure PCTCN2014086339-appb-100002
    为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数。
  7. 根据权利要求5所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的业务中断率包括：
    按照如下方式计算信道配置方案B对应的业务中断率：
    Figure PCTCN2014086339-appb-100003
    其中，fSI(B,Bpre,M)为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
    Figure PCTCN2014086339-appb-100004
    为APc当前使用的信道，
    Figure PCTCN2014086339-appb-100005
    为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子 区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数。
  8. 根据权利要求5所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的平均负载包括：
    按照如下方式计算信道配置方案B对应的平均负载：
    Figure PCTCN2014086339-appb-100006
    其中，fm-load(B,M)为所述信道配置方案B对应的平均负载，
    Figure PCTCN2014086339-appb-100007
    为所述AC管理的APc基于所有子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M为所述AC管理的所有AP的子区域的总数。
  9. 根据权利要求4所述的信道配置方法，其特征在于，所述方法还包括：
    若所述AC当前可用的正交信道的数目大于所述预先设置的第一数值，则所述接入控制器AC接收所述AC管理的每一个AP发送的业务需求满意度包括：
    接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP所有属于外区的子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值，所述属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域。
  10. 根据权利要求9所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标之前包括：
    按照如下步骤计算每个AP基于所有属于外区的子区域的估计负载：
    根据AP的每一个属于外区的子区域所需的传输时长得到所述AP的所有属于外区的子区域所需的总传输时长，所述属于外区的子区域的传输时长是根据所述属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；
    根据所述AP的标称速率、MAC层的协议效率因子及所述AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到所述AP的所有属于外区的子区域可用的总传输时长；
    计算所述AP的所有属于外区的子区域所需的总传输时长与所述AP所有属于外区的子区域可用的总传输时长之间的比值，所述比值为所述AP的所有属于外区的子区域的估计负载。
  11. 根据权利要求10所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的AC业务需求不满意度包括：
    按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
    Figure PCTCN2014086339-appb-100008
    其中，f'UDB(B,M')为所述信道配置方案B对应的AC业务需求不满意度，
    Figure PCTCN2014086339-appb-100009
    为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数。
  12. 根据权利要求10所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信道配置方案对应的业务中断率包括：
    按照如下方式计算信道配置方案B对应的业务中断率：
    Figure PCTCN2014086339-appb-100010
    其中，f'SI(B,Bpre,M')为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
    Figure PCTCN2014086339-appb-100011
    为APc当前使用的信道，
    Figure PCTCN2014086339-appb-100012
    为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数。
  13. 根据权利要求10所述的信道配置方法，其特征在于，所述根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中每一个信 道配置方案对应的平均负载包括：
    按照如下方式计算信道配置方案B对应的平均负载：
    Figure PCTCN2014086339-appb-100013
    其中，f'm-load(B,M')为所述信道配置方案B对应的平均负载，
    Figure PCTCN2014086339-appb-100014
    为所述AC管理的APc基于所有属于外区的子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M'为所述AC管理的所有AP的属于外区的子区域的总数。
  14. 根据权利要求9或10所述的信道配置方法，其特征在于，所述方法还包括：
    将所述AC当前可用的正交信道除去选择的所述信道配置方案后得到的正交信道分配给所述AC管理的AP的所有属于内区的子区域，所述属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
  15. 根据权利要求1所述的信道配置方法，其特征在于，所述方法还包括：
    判断选择的所述网络性能指标最优的信道配置方案的网络性能指标是否优于所述AC当前所使用的信道配置方案的网络性能指标；
    若是，则使用所述选择的所述网络性能指标最优的信道配置方案。
  16. 根据权利要求1所述的信道配置方法，其特征在于，所述AC根据所述业务需求满意度判断是否需要进行信道优化包括：
    所述AC计算获取到的所述业务需求满意度的平均值；
    判断所述平均值是否大于或等于预先设置的第一数值；
    若否，则确定需要进行信道优化。
  17. 根据权利要求1所述的信道配置方法，其特征在于，所述AC根据所述业务需求满意度判断是否需要进行信道优化包括：
    所述AC将获取到的所述业务需求满意度分别与预先设置的第四数值进行比较，确定大于或等于所述预先设置的第四数值的所述业务需求满意度的个数；
    判断所述个数与AC接收的业务需求满意度的个数的比值是否大于或等 于预先设置的第五数值；
    若否，则确定需要进行信道优化。
  18. 一种接入控制器AC，其特征在于，包括：
    接收模块，用于接收所述AC管理的每一个接入点AP发送的业务需求满意度；
    第一判断模块，用于在所述接收模块接收所述AC管理的每一个AP发送的业务需求满意度之后，根据所述业务需求满意度判断是否需要进行信道优化；
    计算模块，用于在所述第一判断模块确定需要进行信道优化时，根据所述AC管理的所有AP的估计负载计算可选的信道配置方案集合中的每一个信道配置方案对应的网络性能指标，所述估计负载为对所述AP的负载进行估计得到的值；
    选择模块，用于在所述计算模块得到所述信道配置方案中每一个信道配置方案对应的网络性能指标之后，从所述信道配置方案集合中选择所述网络性能指标最优的信道配置方案。
  19. 根据权利要求18所述的AC，其特征在于，所述网络性能指标包括：AC业务需求不满意度、业务中断率及平均负载。
  20. 根据权利要求19所述的AC，其特征在于，所述AC还包括：
    第二判断模块，用于判断所述AC当前可用的正交信道的数目是否小于或等于预先设置的第一数值；
    则所述接收模块具体用于若所述第二判断模块确定所述AC当前可用的正交信道的数目小于或等于预先设置的第一数值，接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP的所有子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值。
  21. 根据权利要求20所述的AC，其特征在于，所述AC还包括：
    第一负载计算模块，用于在所述计算模块计算所述信道配置方案中每一个信道配置方案对应的网络性能指标之前，计算每个AP基于所有子区域的估计负载；
    所述第一负载计算模块包括：
    第一计算模块，用于根据AP的每一个子区域所需的传输时长得到所述 AP的所有子区域所需的总传输时长，所述子区域所需的传输时长是根据所述子区域内的用户终端的速率需求的平均值及用户终端实际可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有子区域所需的实际传输时长得到的；
    第二计算模块，用于根据所述AP的标称速率、媒体访问控制MAC层的协议效率因子及所述AP中所有子区域内的用户终端的实际可获得的速率的平均值得到所述AP的所有子区域可用的总传输时长；
    第三计算模块，用于在所述第一计算模块得到所述AP的所有子区域所需的总传输时长及所述第二计算模块得到所述AP的所有子区域可用的总传输时长之后，计算所述AP的所有子区域所需的总传输时长与所述AP的所有子区域可用的总传输时长之间的比值，所述比值为所述AP基于所有子区域的估计负载。
  22. 根据权利要求21所述的AC，其特征在于，所述计算模块包括：
    第四计算模块，用于按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
    Figure PCTCN2014086339-appb-100015
    其中，fUDB(B,M)为所述信道配置方案B对应的AC业务需求不满意度，
    Figure PCTCN2014086339-appb-100016
    为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有AP的子区域的总数；
    第五计算模块，用于按照如下方式计算信道配置方案B对应的业务中断率：
    Figure PCTCN2014086339-appb-100017
    其中，fSI(B,Bpre,M)为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
    Figure PCTCN2014086339-appb-100018
    为APc当前使用的信道，
    Figure PCTCN2014086339-appb-100019
    为所述AC管理的APc基于所有子区域的估计负载，Mc为所述AC管理的APc的子区域的总数，Ap为所述AC所管理的AP的集合，M为所述AC管理的所有 AP的子区域的总数；
    第六计算模块，用于按照如下方式计算信道配置方案B对应的平均负载：
    Figure PCTCN2014086339-appb-100020
    其中，fm-load(B,M)为所述信道配置方案B对应的平均负载，
    Figure PCTCN2014086339-appb-100021
    为所述AC管理的APc基于所有子区域的估计负载，Ap为所述AC所管理的AP的集合，|Ap|为所述AC管理的AP的数目，M为所述AC管理的所有AP的子区域的总数。
  23. 根据权利要求20所述的AC，其特征在于，所述接收模块还用于若所述第二判断模块确定所述AC当前可用的正交信道的数目大于所述预先设置的第一数值，接收所述AC管理的每一个AP发送的业务需求满意度，所述业务需求满意度为基于所述AP所有属于外区的子区域中的保证比特率业务的满意度及非保证比特率业务的满意度得到的值，所述属于外区的子区域是指子区域中的用户终端的接入信号的平均值小于预先设置的第二数值的子区域。
  24. 根据权利要求23所述的AC，其特征在于，所述AC还包括：
    第二负载计算模块，用于在所述计算模块计算所述信道配置方案中每一个信道配置方案对应的网络性能指标之前，计算每个AP基于所有属于外区的子区域的估计负载；
    所述第二负载计算模块包括：
    第七计算模块，用于根据AP的每一个属于外区的子区域所需的传输时长得到所述AP的所有属于外区的子区域所需的总传输时长，所述属于外区的子区域的传输时长是根据所述属于外区的子区域内的用户终端的速率需求的平均值及用户终端可获得速率的平均值、干扰域和传输域的负载增加参数及所述AP的相邻AP的所有属于外区的子区域所需的实际传输时长得到的；
    第八计算模块，用于根据所述AP的标称速率、MAC层的协议效率因子及所述AP的所有属于外区的子区域内的用户终端的实际可获得速率的平均值得到所述AP的所有属于外区的子区域可用的总传输时长；
    第九计算模块，用于在所述第七计算模块和所述第八计算模块分别得到所述AP的所有属于外区的子区域所需的总传输时长及所述AP的所有属于外区的子区域可用的总传输时长之后，计算所述AP的所有属于外区的子区域所需的总传输时长与所述AP所有属于外区的子区域可用的总传输时长之间的比值，所述比值为所述AP的所有属于外区的子区域的估计负载。
  25. 根据权利要求24所述的AC，其特征在于，所述计算模块还包括：
    第十计算模块，用于按照如下的方式计算信道配置方案B对应的AC业务需求不满意度：
    Figure PCTCN2014086339-appb-100022
    其中，f'UDB(B,M')为所述信道配置方案B对应的AC业务需求不满意度，
    Figure PCTCN2014086339-appb-100023
    为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数；
    第十一计算模块，用于按照如下方式计算信道配置方案B对应的业务中断率：
    Figure PCTCN2014086339-appb-100024
    其中，f'SI(B,Bpre,M')为所述信道配置方案B对应的业务中断率，bc为所述信道配置方案B中为APc分配的信道，
    Figure PCTCN2014086339-appb-100025
    为APc当前使用的信道，
    Figure PCTCN2014086339-appb-100026
    为所述AC管理的APc基于所有属于外区的子区域的估计负载，M'c为所述AC管理的APc的属于外区的子区域的数目，Ap为所述AC所管理的AP的集合，M'为所述AC管理的所有AP的属于外区的子区域的总数；
    第十二计算模块，用于按照如下方式计算信道配置方案B对应的平均负载：
    Figure PCTCN2014086339-appb-100027
    其中，f'm-load(B,M')为所述信道配置方案B对应的平均负载，
    Figure PCTCN2014086339-appb-100028
    为所述AC管理的APc基于所有属于外区的子区域的估计负载，Ap为所述AC所管理 的AP的集合，|Ap|为所述AC管理的AP的数目，M'为所述AC管理的所有AP的属于外区的子区域的总数。
  26. 根据权利要求24或25所述的AC，其特征在于，所述AC还包括：
    分配模块，用于将所述AC当前可用的正交信道除去选择的所述信道配置方案后得到的正交信道分配给所述AC管理的AP的所有属于内区的子区域，所述属于内区的子区域是指子区域内的用户终端的接入信号的平均值大于或等于预先设置的第二数值的子区域。
  27. 根据权利要求18所述的AC，其特征在于，所述AC还包括：
    第三判断模块，用于在所述选择模块选择信道配置方案之后，判断选择的所述网络性能指标最优的信道配置方案的网络性能指标是否优于所述AC当前所使用的信道配置方案的网络性能指标；
    执行模块，用于在所述第三判断模块确定所述选择的信道配置方案的网络性能指标优于所述AC当前使用的信道配置方案的网络性能指标之后，使用所述选择的所述网络性能指标最优的信道配置方案。
  28. 一种信道配置系统，其特征在于，包括：如权利要求18至27中任一项所述的接入控制器AC，及所述AC管理的所有的接入点AP。
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