WO2012149787A1 - 一种流量控制的方法及设备 - Google Patents

一种流量控制的方法及设备 Download PDF

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Publication number
WO2012149787A1
WO2012149787A1 PCT/CN2011/080439 CN2011080439W WO2012149787A1 WO 2012149787 A1 WO2012149787 A1 WO 2012149787A1 CN 2011080439 W CN2011080439 W CN 2011080439W WO 2012149787 A1 WO2012149787 A1 WO 2012149787A1
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WIPO (PCT)
Prior art keywords
response
rate
flow control
current
control level
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PCT/CN2011/080439
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English (en)
French (fr)
Inventor
周金海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180002280.4A priority Critical patent/CN102388649B/zh
Priority to PCT/CN2011/080439 priority patent/WO2012149787A1/zh
Publication of WO2012149787A1 publication Critical patent/WO2012149787A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and device for flow control. Background technique
  • the service layer of the core network sends an OVERLOAD message to the BSC (Base Station Controller) / RNC (Radio Network Controller).
  • the OVERLOAD message is used.
  • the BSC/RNC controls the traffic sent to the core network according to the OVERLOAD message.
  • the BSC/RNC controls the traffic sent to the core network according to the congestion of the uplink sending queue of the local end;
  • the BSC/RNC controls the traffic sent to the core network according to the congestion of the uplink transmission queue of the signaling transfer point;
  • Method 4 The BSC/RNC controls the traffic sent to the core network according to the SCCP (Signaling Connection Control Part) sent by the core network.
  • SCCP Signal Connection Control Part
  • Mode 1 relies on the implementation of the core network, and in the existing network, the core network does not send an OVERLOAD message when the service is congested. Therefore, in the face of the core network implementation of each version of the brand, the BSC/RNC relies solely on the OVERLOAD message. Controlling the traffic sent to the core network sometimes fails to solve the core network congestion problem;
  • Mode 2 only solves the direct uplink transmission congestion. Because the method performs congestion judgment based on the proportion of unsuccessful data to the transmission buffer, the BSC/RNC will not send the buffer when the buffer is large or there is not much data to be sent. The service traffic of the core network is controlled. However, due to factors such as poor transmission quality of the network or multiple data retransmissions, the delay of waiting for the upper layer service may be exceeded.
  • Mode 3 only solves the non-directly connected uplink transmission congestion, and also cannot control the delay to meet the service requirements; Downstream transmission congestion is also unable to control the delay to meet the service requirements.
  • the embodiment of the present invention provides a method and a device for the flow control.
  • the technical solution is as follows:
  • a method of flow control comprising:
  • the first flow control level is determined in real time according to the first control principle, and the first control principle performs flow control according to the failure response of the core network to the service request, and the failure reason carried by the failure response is congestion;
  • the second flow control level is determined in real time according to the second control principle, and the second control principle performs flow control according to the response delay of the core network to the service request;
  • the traffic control level with a large flow control level controls the traffic sent to the core network.
  • a flow control device includes: a first determining module, a second determining module, and a comparison executing module; the first determining module, configured to determine, in real time, the first flow control level and the second flow according to the first control principle a control level, the first control principle performs flow control according to a failure response of the core network to the service request, and the failure reason carried by the failure response is congestion;
  • the second determining module is configured to determine a second flow control level in real time according to a second control principle, where the second control principle performs flow control according to a response delay of the core network to the service request;
  • the comparison execution module is configured to compare the first flow control level and the second flow control level obtained by the current computing module when the traffic sent to the core network is controlled, from the first flow control A traffic control level with a larger traffic control level is selected from the level and the second flow control level to control the traffic sent to the core network.
  • the embodiment of the present invention determines the first traffic control level in real time according to the failure response value of the congestion caused by the core network, and the current second traffic control level according to the response delay of the core network to the service request. And choose a larger traffic control level to control the traffic sent to the core network, eliminate the congestion problem of the core network, and avoid erroneous service flow control.
  • FIG. 1 is a flowchart of a method for flow control according to Embodiment 1 of the present invention.
  • FIG. 2 is a network architecture diagram according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart of a method for flow control according to Embodiment 2 of the present invention.
  • FIG. 4 is a block diagram of a flow control device according to Embodiment 3 of the present invention. detailed description
  • a method of flow control the method includes:
  • Step 101 Determine the first flow control level in real time according to the first control principle, where the first control principle performs flow control according to the failure response of the core network to the service request, and the failure reason carried by the failure response is congestion;
  • Step 102 Determine a second flow control level in real time according to a second control principle, where the second flow control level performs flow control according to a response delay of the core network to the service request;
  • Step 103 Compare the first flow control level and the second flow control level when the traffic sent to the core network is controlled, and select the first flow control level and the second flow control level.
  • the traffic control level with a large traffic control level controls the traffic sent to the core network.
  • the first flow control level is determined in real time according to the failure response value of the congestion returned by the core network
  • the second flow control level is determined in real time according to the response delay of the core network to the service request. And choose a larger traffic control level to control the traffic sent to the core network, eliminate the congestion problem of the core network, and avoid erroneous service flow control.
  • the network architecture corresponding to the embodiment of the present invention may be as shown in FIG. 2, and accessing the network side entity RNC (Radio Network
  • Control ler radio network controller
  • BSC Base Station Controller
  • MSC Mobile Broadband Controller
  • the RNC or the BSC is connected to the RNC or the BSC.
  • the RNC and the MSC are connected and communicated through the IU interface.
  • the BSC and the MSC are connected and communicated through the A interface.
  • the RNC or the BSC and the MSC are in communication with each other.
  • the transmitted message can be forwarded via the transmission device.
  • the transmission device may specifically be a PDH (Plesiochronous Digital Hierarchy) optical transceiver, SDH (Synchronous) The digital Hierarchy, the synchronous digital system, or the optical transmission device such as an SPDH (Synchronous Plesiochronous Digital Hierarchy) optical transceiver, wherein the service request includes a user location registration request, a user call request, or a user handover request.
  • PDH Physical Digital Hierarchy
  • SDH Synchronous
  • SPDH Synchronous Plesiochronous Digital Hierarchy
  • the first message CR is sent, and the CR message is a connection establishment request of the SCCP (Signaling Connection Control Part) layer.
  • SCCP Signaling System No. 7, Signaling 7
  • the two signaling points may be BSC and MSC, or a method for transmitting messages between RNC and MSC)
  • SS7 is a protocol for controlling calls or services in a telecommunication network, and often uses a proprietary 64 kbit data circuit to carry packet messages.
  • the MSC processes the CR message and returns a CR response message CC (CR The success of the response) or CREF (CR's failure response, carrying the failure cause value) to the RNC or BSC.
  • CC CR The success of the response
  • CREF CR's failure response, carrying the failure cause value
  • the transmission device may delay forwarding the CR message to the MSC or directly discard the CR message in the congestion state, which may cause the MSC to fail to respond to the CR message in time or even incorrectly.
  • the CR message performs any response.
  • the transmission device may delay forwarding the CC or CREF message to the RNC or the BSC, or directly discard the CC or CREF message in the congested state. ;
  • the MSC may only have time to process some CR messages sent by the RNC or the BSC, or even discard the CR messages that are processed in the future, return part of the CC and part of the CREF, and even return no response message, where The reason for the failure of the returned CREF message is congestion.
  • the RNC or the BSC when receiving the CREF whose cause value is "congested", the RNC or the BSC will reduce the number of CRs sent to the MSC per unit time, and then, according to the feedback of the MSC, the CR sent to the MSC per unit time. The quantity is adjusted, and so repeatedly, the CR strength sent to the MSC is matched to the processing capability of the MSC;
  • the RNC or the BSC will also adjust the number of CR transmissions per unit time according to the delay and discard of the CC or CREF. Then, according to the feedback of the MSC, the number of CRs sent to the MSC per unit time is adjusted, and so on.
  • the CR strength sent to the MSC is optimally controlled to match the processing capabilities of the transmitting device and the MSC.
  • a transmission device or an MSC When a transmission device or an MSC is congested, how does the RNC or the BSC control the CR sent to the MSC per unit time according to the received CREF or CR response delay?
  • the execution entity of the method is specifically an access network side device such as an RNC or a BSC, and specifically includes the following steps:
  • Step 201 Determine a first flow control level in real time according to a first control principle, where the first control principle is based on the core The heart network performs flow control on the failure response of the service request, and the failure reason carried by the failure response is congestion; wherein determining the first flow control level in real time according to the first control principle may specifically include the following operations: when receiving the CR returned by the MSC The failure response, and the failure cause value carried by the failure response is congestion, the current first flow control level is adjusted one level, and the first preset time is set;
  • the current first flow control level is adjusted according to the failure response.
  • the adjusting the current first flow control level according to the failure response in the second preset time may specifically include:
  • the current first flow control level is maintained until the second preset is reached. Time, determining whether the current first flow control level is a predetermined level,
  • the current first flow control level is not the predetermined level
  • the current first flow control level is lowered by one level, and the second preset time is reset, and the return execution is performed according to the failure response to the current preset time in the second preset time.
  • the current first flow control level is a predetermined level
  • the current first flow control level is lowered by one level.
  • the first preset time and the second preset time may be respectively implemented by using a first timer and a second timer, and the first preset time and the second preset time may be set by themselves, and the present invention
  • the embodiment is not particularly limited. Generally, the first preset time is not greater than the second preset time.
  • the predetermined level may be set by itself, and the embodiment of the present invention is not particularly limited. In general, the predetermined level is determined as the first level.
  • each first traffic control level corresponds to a speed of the core network service request, and the higher the first traffic control level, the less the CR message sent to the MSC in the RNC or BSC unit time, and vice versa. Then, the CR message sent to the MSC in the RNC or BSC unit time is relatively more.
  • the first level of the first traffic control level corresponds to a core network service request speed of 100/S (100 service requests per second), and the second level corresponds to a service request sent to the core network at a speed of 90/S, the third level corresponds to the service request sent to the core network at a speed of 85/S,
  • Step 202 Determine a second flow control level in real time according to the second control principle, where the second control principle performs flow control according to a response delay of the core network to the service request.
  • the determining the second flow control level in real time according to the second control principle may include:
  • the statistical period and the service timeout period may be the same;
  • the number of service requests sent to the core network is counted to obtain the first statistic value, and when the current service timeout period expires, the number of service requests for which the core network does not respond is obtained second.
  • Statistic value calculating the second flow control level in real time according to the first statistic value and the second statistic value.
  • calculating the second flow control level in real time according to the first statistic value and the second statistic value may include:
  • the first predetermined value may be set by itself, and the embodiment of the present invention is not particularly limited.
  • the first predetermined value may be 100 or less. a value or the like; when the first statistic value is less than the first predetermined value, the current second flow control level is lowered by one level; or when the first statistic value is not less than the first predetermined value, according to the first statistic value and the second
  • the current second flow control level is lowered by one level, wherein the first ratio may be set by itself, for example, the first ratio may be a ratio of 90% or higher; or
  • the current second flow control level is adjusted by one level, wherein the second ratio can be set by itself, for example, the second ratio may be 10% or lower; or
  • the current second flow control level is determined according to the preset rule according to the first statistical value, the second statistical value, and the response response rate in the current statistical period. Make adjustments.
  • the adjusting the current second flow control level according to the preset rule according to the first statistic value, the second statistic value, and the response response rate in the current statistical period may include:
  • the rate of change of the service request adjusts the current second flow control level.
  • the calculation of the relative change rate of the response response rate, the relative change rate of the response response amount, and the change rate of the service request are not limited in sequence, and may be calculated simultaneously or separately.
  • calculating the sum of the relative change rate of the response response rate and the relative change rate of the response response amount further includes: multiplying the relative change rate of the response response rate and the relative change rate of the response response amount by the first weight, respectively The value and the second weight are added to obtain a sum of the relative change rate of the response rate and the relative change rate of the response amount.
  • the first weight and the second weight may be the same, and the present invention is implemented. This example does not impose specific restrictions.
  • the sum of the relative change rate of the response response rate and the relative change rate of the response response amount and the calculated change rate of the service request to adjust the current second flow control level may specifically include: When the sum of the relative change rate of the response response rate and the relative change rate of the response response amount is greater than or equal to zero, it is determined whether the rate of change of the service request sent to the core network is greater than a second predetermined value, wherein the second predetermined value is self-settable For example, the second predetermined value may be 5% or the like;
  • the current second flow control level is lowered by one level
  • the current second flow control level is adjusted by one level.
  • the sum of the relative change rate of the response response rate and the relative change rate of the response response amount and the calculated change rate of the service request to adjust the current second flow control level may further include:
  • the rate of change of the service request sent to the core network is less than a third predetermined value, wherein the third predetermined value is self-settable
  • the second predetermined value may be -5% or the like
  • the current second flow control level will remain unchanged.
  • each second traffic control level corresponds to a speed of the core network service request, and the second traffic control level is higher, the CR message sent to the MSC in the RNC or BSC unit time is relatively less. On the contrary, the CR message sent to the MSC in the RNC or BSC unit time is relatively more.
  • the first level of the second traffic control level corresponds to a core network service request speed of 100/S (100 service requests per second)
  • the second level corresponds to a service request sent to the core network at a speed of 90/S
  • the third level corresponds to the service request sent to the core network at a speed of 85/S, and so on;
  • the fourth predetermined value is self-settable, for example, the fourth predetermined value may be 5%, etc. ;
  • the flow control effect is considered to be deteriorated, and the current second flow control level is adjusted up by one level;
  • the traffic control effect is considered to be good, and an operation of determining whether the rate of change of the service request sent to the core network is greater than the second predetermined value is performed.
  • the fifth predetermined value is self-settable, for example, the fifth predetermined value may be -5% Wait;
  • the flow control effect is considered to be deteriorated, and the current second flow control level is adjusted up by one level;
  • the traffic control effect is considered to be good, and an operation of determining whether the rate of change of the service request sent to the core network is greater than the third predetermined value is performed.
  • step 201 and the step 202 are not performed in the order of the sequence, and the methods described in step 201 and step 202 are simultaneously executed in the specific implementation.
  • Step 203 Compare the current first traffic control level with the current when controlling the traffic sent to the core network.
  • the size of the second flow control level is the size of the second flow control level
  • step 204 is performed;
  • step 205 is performed;
  • Step 204 Control traffic sent to the core network according to the first traffic control level
  • Step 205 Control traffic sent to the core network according to the second traffic control level.
  • the RNC or the BSC is pre-configured with a mapping relationship between the traffic level and the amount of traffic sent to the core network per unit time, and the RNC or the BSC calculates the traffic control level under different flow control principles in real time according to steps 201 and 202, and When the service traffic to the core network needs to be controlled, a larger traffic control level is selected from the currently calculated first traffic control level and the second traffic control level, and corresponding to the larger traffic control level. The amount of traffic sent to the core network in a unit of time to send traffic.
  • the present invention controls the traffic sent to the core network according to the CREF message sent by the core network, which is caused by the congestion failure cause value, so that the core network is congested,
  • the OVERLOAD message is sent, the traffic sent to the core network can still be controlled, thereby eliminating the problem of congestion of the core network;
  • the embodiment of the present invention performs flow control according to the response delay of the core network to the service request.
  • the embodiment of the present invention responds to the service request according to the core network.
  • the principle of delay control is used to control the traffic sent to the core network, thereby eliminating the problem of core network congestion;
  • the response time delay of the core network to the service request is performed according to the response time delay of the core network to the service request, because all the core network responses received by the BSC/RNC are timed out due to the excessive A-port/IU port message buffered by the transmission device.
  • the principle of flow control controls the traffic sent to the core network, thereby eliminating the problem of core network congestion.
  • a flow control device which may be specifically related to the RNC described in Embodiment 2 of the method or
  • the access network side entity is the same as the BSC, and includes: a first determining module 301, a second determining module 302, and a comparison executing module 303.
  • the first determining module 301 is configured to determine the first flow control level in real time according to the first control principle.
  • a control principle performs flow control according to the failure response of the core network to the service request, and the failure reason carried by the failure response is congestion;
  • the second determining module 302 is configured to determine the second flow control level in real time according to the second control principle, and the second control The principle controls the flow according to the response delay of the core network to the service request;
  • the comparison execution module 303 is configured to compare the first flow control level and the second flow control level obtained by the current determination module when the service traffic sent to the core network is controlled, from the first flow control level and the The traffic control level with a large traffic control level is selected in the second traffic control level to control the traffic sent to the core network.
  • the first determining module 301 specifically includes:
  • a first adjusting unit configured to: when receiving a failure response, increase a current first flow control level by one level, and set a first preset time;
  • the second adjusting unit is configured to maintain the current first flow control level unchanged until the first preset time is reached within the first preset time, and then set the second preset time;
  • a third adjusting unit configured to adjust the current first flow control level according to the failure response within the second preset time.
  • the third adjusting unit includes: a first adjusting subunit, configured to: when the failure response is received in the second preset time, set the second preset time to zero, and control the current first flow rate Level up one level, resetting the first preset time, returning to notify the second adjusting unit to perform the current first flow control level unchanged for the first preset time until the first timer expires The operation of the second timer;
  • a determining subunit configured to: when the failure response is not received within the second preset time, maintaining the current first flow control level unchanged until the second preset time is reached, determining whether the current first flow control level is a predetermined Level
  • a second adjusting subunit configured to: when the determining that the current first flow control level is not a predetermined level, lowering the current first flow control level by one level, resetting the second preset time, and notifying the first
  • the third adjusting unit performs an operation of adjusting the current first flow control level according to the failure response at the second preset time;
  • a third adjustment subunit configured to: when the determining subunit obtains that the current first flow control level is a predetermined level, lowering the current first flow control level by one level.
  • the second calculating module 302 includes:
  • a setting unit configured to determine a statistical period and a service timeout period
  • the fourth adjusting unit is configured to collect, according to the current statistical period, the first statistic value of the number of service requests sent to the core network, and collect the service request that the core network does not respond when the current service timeout time expires.
  • the number of Second statistical value is configured to collect, according to the current statistical period, the first statistic value of the number of service requests sent to the core network, and collect the service request that the core network does not respond when the current service timeout time expires.
  • a fifth adjusting unit configured to calculate a second flow control level in real time according to the first statistic value and the second statistic value.
  • the fifth adjustment unit includes:
  • a determining subunit configured to determine whether the first statistic value is less than a first predetermined value
  • a first execution subunit configured to: when the determining subunit obtains that the first statistic value is less than the first predetermined value, lowering the current second flow control level by one level;
  • a second execution subunit configured to: when determining that the first statistic value is not less than the first predetermined value, calculate a response rate of the core network in the current statistical period according to the first statistic value and the second statistic value;
  • a third execution subunit configured to: if the response rate of the second execution subunit is greater than or equal to the first ratio, lower the current second flow control level by one level;
  • a fourth execution subunit configured to: if the response rate of the second execution subunit is less than the second ratio, increase the current second flow control level by one level;
  • a fifth execution subunit configured to: when the second response sub-unit obtains a response response rate greater than or equal to a second ratio that is less than the first ratio, according to the first statistical value, the second statistical value, and the current statistical period
  • the response response rate adjusts the current second flow control level according to a preset rule.
  • the fifth execution subunit has a relative change rate for calculating a response response rate according to a response rate of the core network in the current statistical period and a response response rate of the core network in the previous statistical period;
  • the current second flow control level is adjusted based on the sum of the relative change rate of the response rate and the relative change rate of the response amount and the rate of change of the service request.
  • the fifth execution subunit when the fifth execution subunit is configured to use the sum of the relative change rate of the response response rate and the relative change rate of the response response amount and the change rate of the service request to the current
  • the flow control level it is specifically determined whether the rate of change of the service request sent to the core network is greater than the second predetermined when the sum of the relative change rate of the response response rate and the relative change rate of the response response is greater than or equal to zero.
  • the current second flow control level is lowered by one level; if the rate of change of the service request sent to the core network is equal to the second predetermined value, Will maintain the current second flow control level unchanged; If the rate of change of the service request of the core network is less than the second predetermined value, the current second flow control level is adjusted by one level.
  • the fifth execution subunit when the fifth execution subunit is configured to use the sum of the relative change rate of the response response rate and the relative change rate of the response response amount and the change rate of the service request to the current
  • the two flow control levels are adjusted, specifically, when the sum of the relative change rate of the response response rate and the relative change rate of the response response amount is less than zero, it is determined whether the rate of change of the service request sent to the core network is less than the second predetermined If the rate of change of the service request sent to the core network is not less than the third predetermined value, the current second flow control level is adjusted by one level; if the rate of change of the service request sent to the core network is less than the third predetermined value, The current second flow control level will remain unchanged.
  • the fifth execution subunit when the fifth execution subunit is configured to calculate a sum of a relative change rate of the response response rate and a relative change rate of the response response amount, specifically, the relative response rate is respectively used
  • the rate of change is multiplied by the first weight
  • the relative rate of change of the response amount is multiplied by the second weight
  • the relative rate of change of the response rate after multiplying the first weight is multiplied by the second weight
  • the relative change rate of the response response amount after the value is added to obtain the sum of the relative change rate of the response response rate and the relative change rate of the response response amount.
  • the device further includes: a first determining module, configured to determine whether a sum of a relative change rate of the response rate of response and a response rate of the response is greater than a fourth predetermined value, and if less than a fourth predetermined value, the flow control effect is considered to be deteriorated If the current second flow control level is adjusted to a higher level, if the flow rate control is better than the fourth predetermined value, the fifth execution subunit is notified to determine whether the rate of change of the service request sent to the core network is greater than Two predetermined value operations.
  • a first determining module configured to determine whether a sum of a relative change rate of the response rate of response and a response rate of the response is greater than a fourth predetermined value, and if less than a fourth predetermined value, the flow control effect is considered to be deteriorated If the current second flow control level is adjusted to a higher level, if the flow rate control is better than the fourth predetermined value, the fifth execution subunit is notified to determine whether the rate of change of the service request
  • a second determining module configured to determine whether a sum of a relative change rate of the response rate and a response rate of the response is less than a fifth predetermined value, and if less than a fifth predetermined value, the flow control effect is considered to be deteriorated, and the current If the second flow control level is not lower than the fifth predetermined value, the traffic control effect is considered to be better, and the fifth execution subunit is notified to perform whether the rate of change of the service request sent to the core network is greater than a third predetermined value. operating.
  • the first flow control level is determined in real time according to the failure response value of the congestion returned by the core network
  • the second flow control level is determined in real time according to the response delay of the core network to the service request.
  • choose a larger traffic control level to control the traffic sent to the core network eliminate the congestion problem of the transmission equipment and the core network, and avoid erroneous service flow control.

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Abstract

本发明实施例提供了一种流量控制的方法及设备,涉及通信技术领域,方法包括:按照第一控制原则实时确定第一流量控制级别,按照第二控制原则实时确定第二流量控制级别;当对发往核心网的业务流量进行控制时,比较第一流量控制级别与第二流量控制级别的大小,从所述第一流量控制级别和所述第二流量控制级别中选出流量控制级别较大的流量控制级别对发往核心网的业务流量进行控制。通过本发明技术方案的实现,消除核心网的拥塞问题,避免错误的业务流量控制。

Description

一种流量控制的方法及设备 技术领域
本发明涉及通信技术领域, 特别涉及一种流量控制的方法及设备。 背景技术
目前的移动通信系统中, 在出现大量用户位置更新或者核心网处理能力锐减的情况下, 都将导致系统内的业务量大大超过核心网的处理能力, 此时, 需要控制系统内到达核心网 的业务流量, 以避免过大的业务流量而导致核心网的实际处理能力下降, 产生通讯事故。
现有技术中, 通常采用如下方式来控制到达核心网的业务流量:
方式一、当核心网出现业务拥塞时,核心网的业务层向 BSC (Base Station Controller, 基站控制器) /RNC (Radio Network Controller, 无线网络控制器) 发送 OVERLOAD (过载) 消息, 该 OVERLOAD消息用于指示核心网拥塞, BSC/RNC根据该 OVERLOAD消息来对发往核心 网的业务流量进行控制。
方式二、 BSC/RNC 根据本端上行发送队列的拥塞情况对发往核心网的业务流量进行控 制;
方式三、 BSC/RNC根据信令转接点上行发送队列的拥塞情况对发往核心网的业务流量进 行控制;
方式四、 BSC/RNC根据核心网发来的 SCCP (Signaling Connection Control Part, 信 令连接控制部分) 流控级别对发往核心网的业务流量进行控制。
但是, 上述方式各有不足:
方式一依赖于核心网的实现, 且在现网中出现过核心网在业务拥塞时并不发送 OVERLOAD消息的情况,因此,面对各品牌各版本的核心网实现, BSC/RNC单纯依赖 OVERLOAD 消息来对发往核心网的业务流量进行控制有时无法解决核心网拥塞问题;
方式二仅解决直连上行传输拥塞, 由于该方法是根据未发送成功数据占发送缓存比例 来进行拥塞判断的, 因此在缓存较大或需要发送数据不多时, BSC/RNC将不会对发往核心网 的业务流量进行控制, 但此时可能由于网络的传输质量不好或数据多次重传等因素导致超 过了上层业务等待的时延。
方式三仅解决非直连上行传输拥塞, 同样无法控制时延满足业务要求; 方式四则解决 下行传输拥塞, 也同样无法控制时延满足业务要求。 发明内容
为了解决 BSC/RNC依赖于核心网所发送 OVERLOAD消息及业务时延的问题, 本发明实施 例提供了一种流量控制的方法及设备。 所述技术方案如下:
一种流量控制的方法, 所述方法包括:
按照第一控制原则实时确定第一流量控制级别, 所述第一控制原则根据核心网对业务 请求的失败应答进行流量控制, 所述失败应答所携带的失败原因为拥塞;
按照第二控制原则实时确定第二流量控制级别, 所述第二控制原则根据核心网对业务 请求的响应时延进行流量控制;
当对发往核心网的业务流量进行控制时, 比较所述第一流量控制级别与所述第二流量 控制级别的大小, 从所述第一流量控制级别和所述第二流量控制级别中选出流量控制级别 较大的流量控制级别对发往核心网的业务流量进行控制。
一种流量控制设备, 所述设备包括: 第一确定模块、 第二确定模块、 比较执行模块; 所述第一确定模块, 用于按照第一控制原则实时确定第一流量控制级别和第二流量控 制级别, 所述第一控制原则根据核心网对业务请求的失败应答进行流量控制, 所述失败应 答所携带的失败原因为拥塞;
所述第二确定模块, 用于按照第二控制原则实时确定第二流量控制级别, 所述第二控 制原则根据核心网对业务请求的响应时延进行流量控制;
所述比较执行模块, 用于当对发往核心网的业务流量进行控制时, 比较当前所述计算 模块得到的第一流量控制级别与第二流量控制级别的大小, 从所述第一流量控制级别和所 述第二流量控制级别中选出流量控制级别较大的流量控制级别对发往核心网的业务流量进 行控制。
本发明实施例通过分别根据核心网返回的携带的失败原因值为拥塞的失败应答来实时 确定第一流量控制级别, 及很据核心网对业务请求的响应时延来实时当前第二流量控制级 别, 并从中选择一个较大的流量控制级别来对发往核心网的业务流量进行控制的实现, 消 除核心网的拥塞问题, 避免错误的业务流量控制。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所需要使用的 附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本 领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的 附图。
图 1是本发明实施例 1提供的一种流量控制的方法流程图;
图 2是本发明实施例 2提供的一种网络架构图;
图 3是本发明实施例 2提供的一种流量控制的方法流程图;
图 4是本发明实施例 3提供的一种流量控制的设备框图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明实施方式作 进一步地详细描述。
实施例 1
参见图 1, 一种流量控制的方法, 方法包括:
步骤 101 : 按照第一控制原则实时确定第一流量控制级别, 其中, 第一控制原则根据核 心网对业务请求的失败应答进行流量控制, 失败应答所携带的失败原因为拥塞;
步骤 102: 按照第二控制原则实时确定第二流量控制级别, 其中, 第二流量控制级别根 据核心网对业务请求的响应时延进行流量控制;
步骤 103: 当对发往核心网的业务流量进行控制时, 比较第一流量控制级别与第二流量 控制级别的大小, 从所述第一流量控制级别和所述第二流量控制级别中选出流量控制级别 较大的流量控制级别对发往核心网的业务流量进行控制。
本发明实施例通过分别根据核心网返回的携带的失败原因值为拥塞的失败应答来实时 确定第一流量控制级别, 及很据核心网对业务请求的响应时延来实时确定第二流量控制级 别, 并从中选择一个较大的流量控制级别来对发往核心网的业务流量进行控制的实现, 消 除核心网的拥塞问题, 避免错误的业务流量控制。
实施例 2
本发明实施例所对应的网络架构可以如图 2所示, 接入网侧实体 RNC ( Radio Network
Control ler, 无线网络控制器) 或者 BSC (Base Station Control ler, 基站控制器) 可以 向核心网侧实体 MSC (Mobi le Switching Center, 移动交换中心) 发送业务请求, MSC对 接收到的业务请求进行处理后返回应答消息给 RNC或者 BSC, 这里, RNC与 MSC之间通过 IU接口相连并进行通信, BSC与 MSC之间通过 A接口相连并进行通信, 本发明实施例中, RNC或者 BSC和 MSC之间的所传递的消息可以经由传输设备转发, 这里, 传输设备具体可以 是 PDH (Plesiochronous Digital Hierarchy, 准同步数字系列)光端机、 SDH ( Synchronous Digital Hierarchy, 同步数字系歹 lj )光端机或 SPDH ( Synchronous Plesiochronous Digital Hierarchy, 同步准同步数字体系) 光端机等光传输设备, 其中, 业务请求包括用户位置登 记请求、 用户呼叫请求或者用户切换请求等。
在具体实现时, RNC或者 BSC向 MSC发送业务请求时, 首先会发送第一条消息 CR, 该 CR消息为 SCCP ( Signal ing Connection Control Part , 信令连接控制部分) 层的连接建 立请求, 是单用户发往核心网的第一条消息; 其中, SCCP 主要提供在一个或不同 SS7 ( SS7Signal ing System No. 7, 7号信令) 网络的两个信令点 (例如, 本发明实施例中这两 个信令点可以为 BSC和 MSC, 或者为 RNC和 MSC) 之间消息的传输方法, SS7为电信网络中 用于控制呼叫或业务的协议, 常使用专有的 64kbit数据电路来承载分组消息, 为同一个网 络中两台或多台设备之间的通话提供连接控制服务; MSC在接收到经由传输设备转发的 CR 消息后, 对该 CR消息进行处理, 并返回 CR的应答消息 CC ( CR的成功应答)或者 CREF (CR 的失败应答, 携带失败原因值) 给 RNC或 BSC。
本发明实施例中, RNC或者 BSC发送 CR消息给 MSC后, 传输设备在拥塞状态下, 可能 延时转发 CR消息给 MSC或直接丢弃 CR消息, 这将导致 MSC无法及时对 CR消息进行响应甚 至不对 CR消息进行任何响应; 同样的, MSC在将 CC或 CREF消息发送给 RNC或者 BSC后, 传输设备在拥塞状态下,可能延时转发 CC或 CREF消息给 RNC或 BSC,或直接丢弃 CC或 CREF 消息;
MSC在拥塞状态下, 可能只来得及对 RNC或者 BSC所发送的部分 CR消息进行处理, 甚 至丢弃未来得及处理的 CR消息, 返回部分的 CC和部分的 CREF, 甚至不返回任何应答消息, 其中, 所返回的 CREF消息所携带的失败原因值为拥塞。
本发明实施例中, RNC或 BSC在收到原因值是 "拥塞" 的 CREF时, 将降低单位时间内 发往 MSC的 CR数量, 之后, 根据 MSC的反馈情况对单位时间内发往 MSC的 CR数量进行调 整, 如此反复, 将发往 MSC的 CR强度匹配到 MSC的处理能力;
同时, RNC或者 BSC也会根据 CC或 CREF的时延、 丢弃情况, 调整单位时间内 CR发送 的数量, 之后, 根据 MSC的反馈情况对单位时间内发往 MSC的 CR数量进行调整, 如此反复, 将发往 MSC的 CR强度控制到最佳, 以匹配传输设备和 MSC的处理能力。
下面将结合具体实例来详细说明: 在传输设备或者 MSC出现拥塞时, RNC或者 BSC如何 根据接收到的携带的失败原因值为拥塞的 CREF或者 CR应答时延来控制单位时间内发往 MSC 的 CR数量, 参见图 3, 一种流量控制的方法, 该方法的执行主体具体为 RNC或者 BSC等接 入网侧设备, 具体包括如下步骤:
步骤 201 : 按照第一控制原则实时确定第一流量控制级别, 其中, 第一控制原则根据核 心网对业务请求的失败应答进行流量控制, 该失败应答所携带的失败原因为拥塞; 其中, 按照第一控制原则实时确定第一流量控制级别具体可以包括如下操作: 当接收到 MSC返回的 CR的失败应答, 且该失败应答所携带的失败原因值为拥塞时, 将 当前的第一流量控制级别上调一级, 并设置第一预设时间;
在第一预设时间内, 维持当前的第一流量控制级别不变直到达到第一预设时间, 则设 置第二预设时间;
在第二预设时间内, 根据所述失败应答对当前的第一流量控制级别进行调整。
本发明实施例中, 在第二预设时间内, 根据所述失败应答对当前的第一流量控制级别 进行调整具体可以包括:
在第二预设时间内接收到 MSC返回的 CR的失败应答, 且该失败应答所携带的失败原因 值为拥塞时, 将第二预设时间置零, 并将当前的第一流量控制级别上调一级, 重新设置第 一预设时间, 返回在第一预设时间内维持当前的第一流量控制级别不变直到达到第一预设 时间则开启第二定时器的操作; 或者
在第二预设时间内未接收到 MSC返回的 CR的失败应答时, 且该失败应答所携带的失败 原因值为拥塞时, 则维持当前的第一流量控制级别不变直到达到第二预设时间, 判断当前 的第一流量控制级别是否为预定级别,
当当前的第一流量控制级别不为预定级别时, 将当前的第一流量控制级别下调一级, 重新设置第二预设时间, 返回执行在第二预设时间内根据所述失败应答对当前的第一流量 控制级别进行调整的操作;
当当前的第一流量控制级别为预定级别时, 将当前的第一流量控制级别下调一级。 本发明实施例中, 第一预设时间及第二预设时间可以分别有第一定时器和第二定时器 来控制实现, 第一预设时间和第二预设时间可以自行设置, 本发明实施例对此并无特别的 限定, 一般情况下, 第一预设时间要不大于第二预设时间。
本发明实施例中, 预定级别可以自行设置, 本发明实施例对此并无特别的限定, 一般 情况下, 将预定级别定为第一级别。
需要说明的是, 每一第一流量控制级别对应一发往核心网业务请求的时速, 第一流量 控制级别越高, 则 RNC或者 BSC单位时间内发往 MSC的 CR消息就相对越少, 反之, 则 RNC 或者 BSC单位时间内发往 MSC的 CR消息就相对越多。 例如, 第一流量控制级别的第一级别 对应的发往核心网业务请求的时速为 100/S (每秒发 100个业务请求), 第二级别对应的发 往核心网的业务请求的时速为 90/S,第三级别对应的发往核心网的业务请求的时速为 85/S , 步骤 202: 按照第二控制原则实时确定第二流量控制级别, 其中, 第二控制原则根据核 心网对业务请求的响应时延进行流量控制;
其中, 按照第二控制原则实时确定第二流量控制级别具体可以包括:
确定统计周期和业务超时时间, 本发明实施例中, 统计周期与业务超时时间可以是一 样的;
之后, 在当前的统计周期内, 统计发往核心网的业务请求的数量得到第一统计值, 并 在当前的业务超时时间到时, 统计核心网未做出应答的业务请求的数量得到第二统计值; 根据第一统计值和第二统计值实时计算第二流量控制级别。
本发明实施例中, 根据第一统计值和第二统计值实时计算第二流量控制级别具体可以 包括:
判断第一统计值是否小于第一预定值, 本发明实施例中, 第一预定值可以自行设置, 本发明实施例对此并无特别的限定, 例如, 第一预定值可以是 100或者更小的数值等; 当第一统计值小于第一预定值时, 将当前的第二流量控制级别下调一级; 或者 当第一统计值不小于第一预定值时, 根据第一统计值及第二统计值计算当前统计周期 内核心网的应答响应率, 具体地, 当前统计周期内核心网的应答响应率= (第一统计值-第 二统计值) /第一统计值;
当应答响应率大于等于第一比例时, 将当前的第二流量控制级别下调一级, 其中, 第 一比例可以自行设置, 例如, 第一比例可以是 90%或者更高的比例等; 或者
当应答响应率小于第二比例时, 将当前的第二流量控制级别上调一级, 其中, 第二比 例可以自行设置, 例如, 第二比例可以是 10%或者更低的比例等; 或者
当应答响应率大于等于第二比例小于第一比例时, 根据所述第一统计值、 第二统计值 及所述当前统计周期内的应答响应率按照预设规则对当前的第二流量控制级别进行调整。
本发明实施例中, 根据所述第一统计值、 第二统计值及所述当前统计周期内的应答响 应率按照预设规则对当前的第二流量控制级别进行调整具体可以包括:
根据当前统计周期内核心网的应答响应率及前一统计周期内核心网的应答响应率计算 得到应答响应率的相对变化率, 具体地, 应答响应率的相对变化率 = (当前统计周期内核心 网的应答响应率 -前一统计周期内核心网的应答响应率) /前一统计周期内核心网的应答响 应率;
根据第一统计值及第二统计值计算得到在当前统计周期内核心网的应答响应量, 具体 地, 当前统计周期内核心网的应答响应量=第一统计值-第二统计值; 根据当前统计周期内 核心网的应答响应量及前一统计周期内核心网的应答响应量计算得到应答响应量的相对变 化率, 具体地, 应答响应量的相对变化率 = (当前统计周期内核心网的应答响应量-前一统 计周期内核心网的应答响应量) /前一统计周期内核心网的应答响应量;
根据当前统计周期内得到的第一统计值及前一统计周期内得到的第一统计值计算得到 发往核心网的业务请求的变化率, 具体地, 业务请求的变化率 = (当前统计周期内得到的第 一统计值-前一统计周期内得到的第一统计值) /前一统计周期内得到的第一统计值;
接下来, 计算应答响应率的相对变化率与所述应答响应量的相对变化率的和; 之后, 根据计算得到应答响应率的相对变化率与应答响应量的相对变化率的和及计算 得到的业务请求的变化率对当前的第二流量控制级别进行调整。
本发明实施例中, 上述有关应答响应率的相对变化率、 应答响应量的相对变化率和业 务请求的变化率的计算没有顺序上的限制, 可以同时计算, 也可以不分先后的分别计算。
本发明实施例中, 计算应答响应率的相对变化率与应答响应量的相对变化率的和具体 还包括: 分别将应答响应率的相对变化率和应答响应量的相对变化率乘以第一权值和第二 权值后相加得到应答响应率的相对变化率与应答响应量的相对变化率的和, 本发明实施例 中, 第一权值和第二权值可以相同的, 本发明实施例对此并不做具体限制。
本发明实施例中, 根据计算得到应答响应率的相对变化率与应答响应量的相对变化率 的和及计算得到的业务请求的变化率对当前的第二流量控制级别进行调整具体可以包括: 当应答响应率的相对变化率与应答响应量的相对变化率的和为大于等于零时, 判断发 往核心网的业务请求的变化率是否大于第二预定值, 其中, 第二预定值是可以自行设置的, 例如, 第二预定值可以是 5%等;
当发往核心网的业务请求的变化率大于第二预定值, 则将当前的第二流量控制级别下 调一级; 或者
当发往核心网的业务请求的变化率等于第二预定值, 则将维持当前的第二流量控制级 别不变; 或者
当发往核心网的业务请求的变化率小于第二预定值, 则将当前的第二流量控制级别上 调一级。
本发明实施例中, 根据计算得到应答响应率的相对变化率与应答响应量的相对变化率 的和及计算得到的业务请求的变化率对当前的第二流量控制级别进行调整具体还可以包 括:
当应答响应率的相对变化率与应答响应量的相对变化率的和小于零时, 判断发往核心 网的业务请求的变化率是否小于第三预定值, 其中, 第三预定值是可以自行设置的, 例如, 第二预定值可以是 -5%等; 如果发往核心网的业务请求的变化率不小于第三预定值, 则将当前的第二流量控制级 别上调一级;
如果发往核心网的业务请求的变化率小于第三预定值, 则将维持当前的第二流量控制 级别不变。
本发明实施例中, 每一第二流量控制级别对应一发往核心网业务请求的时速, 第二流 量控制级别越高,则 RNC或者 BSC单位时间内发往 MSC的 CR消息就相对越少,反之,则 RNC 或者 BSC单位时间内发往 MSC的 CR消息就相对越多。 例如, 第二流量控制级别的第一级别 对应的发往核心网业务请求的时速为 100/S (每秒发 100个业务请求), 第二级别对应的发 往核心网的业务请求的时速为 90/S,第三级别对应的发往核心网的业务请求的时速为 85/S , 等等;
本发明实施例中, 进一步优选地, 当应答响应率的相对变化率与应答响应量的相对变 化率的和为大于等于零时, 判断发往核心网的业务请求的变化率是否大于第二预定值之前, 方法还包括:
判断当应答响应率的相对变化率与应答响应量的相对变化率的和是否大于第四预定 值, 这里, 第四预定值是可以自行设置的, 例如, 该第四预定值可以为 5%等;
如果小于第四预定值, 则认为流量控制效果恶化, 将当前的第二流量控制级别上调一 级;
如果不小于第四预定值, 则认为流量控制效果较好, 执行判断发往核心网的业务请求 的变化率是否大于第二预定值的操作。
本发明实施例中, 进一步优选地, 当应答响应率的相对变化率与应答响应量的相对变 化率的和为小于零时, 判断发往核心网的业务请求的变化率是否小于第三预定值之前, 方 法还包括:
判断当应答响应率的相对变化率与应答响应量的相对变化率的和是否小于第五预定 值, 这里, 第五预定值是可以自行设置的, 例如, 该第五预定值可以为 -5%等;
如果小于第五预定值, 则认为流量控制效果恶化, 将当前的第二流量控制级别上调一 级;
如果不小于第五预定值, 则认为流量控制效果较好, 执行判断发往核心网的业务请求 的变化率是否大于第三预定值的操作。
本发明实施例中, 步骤 201与步骤 202无执行顺序上的先后之分, 步骤 201和步骤 202 所述的方法在具体实现时同时执行。
步骤 203 : 当对发往核心网的业务流量进行控制时, 比较当前第一流量控制级别与当前 第二流量控制级别的大小,
当第一流量控制级别大于等于第二流量控制级别时, 执行步骤 204;
当第一流量控制级别小于第二流量控制级别时, 执行步骤 205 ;
步骤 204: 按照第一流量控制级别对发往核心网的业务流量进行控制;
步骤 205 : 按照第二流量控制级别对发往核心网的业务流量进行控制。
这里, RNC或者 BSC预先配置有流量级别与单位时间内发往核心网业务量之间的映射关 系, RNC或者 BSC按照步骤 201和步骤 202实时计算在不同流量控制原则下的流量控制级别, 并在需要对发往核心网的业务流量进行控制时, 从当前计算得到的第一流量控制级别及第 二流量控制级别中选择一个较大的流量控制级别, 并按照该较大的流量控制级别所对应的 单位时间内发往核心网的业务量来发送业务。
下面介绍一下本发明实施例所带来的有益效果: 本发明根据核心网所发送的携带失败 原因值为拥塞的 CREF消息来对发往核心网的业务流量进行控制, 使得在核心网拥塞、 没有 发送 OVERLOAD消息时, 依然可以对发往核心网的业务流量进行控制, 从而消除核心网拥塞 的问题;
对于核心网严重过载、 没有发送 OVERLOAD消息或丢弃超出其处理能力的业务请求消息 而完全不返回任何 CC或 CREF消息的情况下, 本发明实施例根据核心网对业务请求的响应 时延进行流量控制的原则来对发往核心网的业务流量进行控制, 从而消除核心网拥塞的问 题;
对于核心网因地震而导致消息处理能力下降、 没有发送 OVERLOAD消息或者或丢弃超出 其处理能力的业务请求消息而返回部分 CC或 CREF消息的情况下, 本发明实施例根据核心 网对业务请求的响应时延进行流量控制的原则来对发往核心网的业务流量进行控制, 从而 消除核心网拥塞的问题;
对于由于传输设备传输缓存了过多的 A口 /IU口消息而导致 BSC/RNC收到的所有核心网 的应答都是超时的情况, 本发明实施例根据核心网对业务请求的响应时延进行流量控制的 原则来对发往核心网的业务流量进行控制, 从而消除核心网拥塞的问题。
综上所述, 正是本发明实施例通过分别根据核心网返回的携带的失败原因值为拥塞的 失败应答来实时确定第一流量控制级别, 和很据核心网对业务请求的响应时延来确定计算 第二流量控制级别, 并从中选择一个较大的流量控制级别来对发往核心网的业务流量进行 控制的实现, 消除传输设备及核心网的拥塞问题, 避免错误的业务流量控制。
实施例 3
参见图 4, 一种流量控制的设备, 该设备具体可以与方法实施例 2 中所述的 RNC或者 BSC等接入网侧实体相同,包括:第一确定模块 301、第二确定模块 302、比较执行模块 303; 第一确定模块 301, 用于按照第一控制原则实时确定第一流量控制级别, 第一控制原则 根据核心网对业务请求的失败应答进行流量控制, 失败应答所携带的失败原因为拥塞; 第二确定模块 302, 用于按照第二控制原则实时确定第二流量控制级别, 第二控制原则 根据核心网对业务请求的响应时延进行流量控制;
比较执行模块 303, 用于当对发往核心网的业务流量进行控制时, 比较当前确定模块得 到的第一流量控制级别与第二流量控制级别的大小, 从所述第一流量控制级别和所述第二 流量控制级别中选出流量控制级别较大的流量控制级别对发往核心网的业务流量进行控 制。
其中, 第一确定模块 301具体包括:
第一调整单元, 用于当接收到失败应答时, 将当前的第一流量控制级别上调一级, 并 设置第一预设时间;
第二调整单元, 用于在第一预设时间内, 维持当前的第一流量控制级别不变直到达到 第一预设时间, 则设置第二预设时间;
第三调整单元, 用于在第二预设时间内, 根据所述失败应答对当前的第一流量控制级 别进行调整。
本发明实施例中, 第三调整单元包括: 第一调整子单元, 用于在第二预设时间内接收 到失败应答时, 将第二预设时间置零, 并将当前的第一流量控制级别上调一级, 重新设置 第一预设时间, 返回通知所述第二调整单元执行在第一预设时间内维持当前的第一流量控 制级别不变直到达到第一定时器超时关闭则开启第二定时器的操作;
判断子单元, 用于在第二预设时间内未接收到失败应答时, 则维持当前的第一流量控 制级别不变直到达到第二预设时间, 判断当前的第一流量控制级别是否为预定级别;
第二调整子单元, 用于当判断子单元得出当前的第一流量控制级别不为预定级别时, 将当前的第一流量控制级别下调一级, 重新设置第二预设时间, 并通知第三调整单元执行 在第二预设时间根据所述失败应答对当前的第一流量控制级别进行调整的操作;
第三调整子单元, 用于当判断子单元得出当前的第一流量控制级别为预定级别时, 将 当前的第一流量控制级别下调一级。
其中, 第二计算模块 302包括:
设置单元, 用于确定统计周期和业务超时时间;
第四调整单元, 用于在当前的统计周期内, 统计发往核心网的业务请求的数量得到第 一统计值, 并在当前的业务超时时间到时, 统计核心网未做出应答的业务请求的数量得到 第二统计值;
第五调整单元, 用于根据第一统计值和第二统计值实时计算第二流量控制级别。
具体地, 第五调整单元包括:
判断子单元, 用于判断第一统计值是否小于第一预定值;
第一执行子单元, 用于当判断子单元得出第一统计值小于第一预定值时, 将当前的第 二流量控制级别下调一级;
第二执行子单元, 用于当判断子单元得出第一统计值不小于第一预定值时, 根据第一 统计值及第二统计值计算当前统计周期内核心网的应答响应率;
第三执行子单元, 用于如果第二执行子单元得到的应答响应率大于等于第一比例时, 将当前的第二流量控制级别下调一级;
第四执行子单元, 用于如果第二执行子单元得到的应答响应率小于第二比例时, 将当 前的第二流量控制级别上调一级;
第五执行子单元, 用于如果第二执行子单元得到的应答响应率大于等于第二比例小于 第一比例时, 根据所述第一统计值、 第二统计值及所述当前统计周期内的应答响应率按照 预设规则对当前的第二流量控制级别进行调整。
其中, 第五执行子单元, 具有用于根据当前统计周期内核心网的应答响应率及前一统 计周期内核心网的应答响应率计算得到应答响应率的相对变化率;
根据第一统计值及第二统计值计算得到在当前统计周期内核心网的应答响应量, 并根 据当前统计周期内核心网的应答响应量及前一统计周期内核心网的应答响应量计算得到应 答响应量的相对变化率;
根据当前统计周期内得到的第一统计值及前一统计周期内得到的第一统计值计算得到 发往核心网的业务请求的变化率;
接下来, 计算应答响应率的相对变化率与应答响应量的相对变化率的和;
之后, 根据所述应答响应率的相对变化率与所述应答响应量的相对变化率的和及所述 业务请求的变化率对当前的第二流量控制级别进行调整。
本发明实施例中, 当所述第五执行子单元用于根据所述应答响应率的相对变化率与所 述应答响应量的相对变化率的和及所述业务请求的变化率对当前的第二流量控制级别进行 调整时, 具体用于当应答响应率的相对变化率与应答响应量的相对变化率的和为大于等于 零时, 判断发往核心网的业务请求的变化率是否大于第二预定值, 如果发往核心网的业务 请求的变化率大于第二预定值, 则将当前的第二流量控制级别下调一级; 如果发往核心网 的业务请求的变化率等于第二预定值, 则将维持当前的第二流量控制级别不变; 如果发往 核心网的业务请求的变化率小于第二预定值, 则将当前的第二流量控制级别上调一级。 本发明实施例中, 当所述第五执行子单元用于根据所述应答响应率的相对变化率与所 述应答响应量的相对变化率的和及所述业务请求的变化率对当前的第二流量控制级别进行 调整时, 具体用于当应答响应率的相对变化率与应答响应量的相对变化率的和为小于零时, 判断发往核心网的业务请求的变化率是否小于第二预定值, 如果发往核心网的业务请求的 变化率不小于第三预定值, 则将当前的第二流量控制级别上调一级; 如果发往核心网的业 务请求的变化率小于第三预定值, 则将维持当前的第二流量控制级别不变。
本发明实施例中, 当第五执行子单元用于计算所述应答响应率的相对变化率与所述应 答响应量的相对变化率的和时, 具体用于分别将所述应答响应率的相对变化率乘以第一权 值、 将所述应答响应量的相对变化率乘以第二权值, 之后, 将乘以第一权值后的应答响应 率的相对变化率与乘以第二权值后的应答响应量的相对变化率相加得到所述应答响应率的 相对变化率与所述应答响应量的相对变化率的和。
设备还包括: 第一判断模块, 用于判断当应答响应率的相对变化率与应答响应量的相 对变化率的和是否大于第四预定值, 如果小于第四预定值, 则认为流量控制效果恶化, 将 当前的第二流量控制级别上调一级; 如果不小于第四预定值, 则认为流量控制效果较好, 通知第五执行子单元执行判断发往核心网的业务请求的变化率是否大于第二预定值的操 作。
第二判断模块, 用于判断当应答响应率的相对变化率与应答响应量的相对变化率的和 是否小于第五预定值, 如果小于第五预定值, 则认为流量控制效果恶化, 将当前的第二流 量控制级别上调一级; 如果不小于第五预定值, 则认为流量控制效果较好, 通知第五执行 子单元执行判断发往核心网的业务请求的变化率是否大于第三预定值的操作。
本发明实施例通过分别根据核心网返回的携带的失败原因值为拥塞的失败应答来实时 确定第一流量控制级别, 及很据核心网对业务请求的响应时延来实时确定第二流量控制级 别, 并从中选择一个较大的流量控制级别来对发往核心网的业务流量进行控制的实现, 消 除传输设备及核心网的拥塞问题, 避免错误的业务流量控制。 本发明方法和设备实施例, 可以互相参照引用。 尤其是, 由于在方法中对整个流程已 经进行了详细描述, 设备实施例中的一些细节没有再详细描述, 但均可以参照方法实施例。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完 成, 也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。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的精神和原则 之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种流量控制的方法, 其特征在于, 所述方法包括:
按照第一控制原则实时确定第一流量控制级别, 所述第一控制原则根据核心网对业务请 求的失败应答进行流量控制, 所述失败应答所携带的失败原因为拥塞;
按照第二控制原则实时确定第二流量控制级别, 所述第二控制原则根据核心网对业务请 求的响应时延进行流量控制;
当对发往核心网的业务流量进行控制时, 比较所述第一流量控制级别与所述第二流量控 制级别的大小, 从所述第一流量控制级别和所述第二流量控制级别中选出流量控制级别较大 的流量控制级别对发往核心网的业务流量进行控制。
2、根据权利要求 1所述的方法, 其特征在于, 所述按照第一控制原则实时确定第一流量 控制级别包括:
当接收到所述失败应答时, 将当前的第一流量控制级别上调一级, 并设置第一预设时间; 在所述第一预设时间内,维持当前的第一流量控制级别不变直到达到所述第一预设时间, 则设置第二预设时间;
在所述第二预设时间内, 根据所述失败应答对当前的第一流量控制级别进行调整。
3、 根据权利要求 2所述的方法, 其特征在于, 所述在所述第二预设时间内, 根据所述失 败应答对当前的第一流量控制级别进行调整包括:
在所述第二预设时间内接收到所述失败应答时, 将所述第二预设时间置零, 并将当前的 第一流量控制级别上调一级, 重新设置所述第一预设时间, 返回在所述第一预设时间内维持 当前的第一流量控制级别不变直到达到所述第一预设时间则设置第二预设时间的操作;
在所述第二预设时间内未接收到所述失败应答时, 则维持当前的第一流量控制级别不变 直到达到所述第二预设时间, 判断当前的第一流量控制级别是否为预定级别,
当当前的第一流量控制级别不为所述预定级别时,将当前的第一流量控制级别下调一级, 重新设置所述第二预设时间, 返回执行在所述第二预设时间内根据所述失败应答对当前的第 一流量控制级别进行调整的操作;
当当前的第一流量控制级别为所述预定级别时, 将当前的第一流量控制级别下调一级。
4、根据权利要求 1所述的方法, 其特征在于, 所述按照第二控制原则实时计算第二流量 控制级别包括:
确定统计周期和业务超时时间;
在当前的统计周期内, 统计发往核心网的业务请求的数量得到第一统计值, 并在当前的 业务超时时间到时, 统计所述核心网未做出应答的业务请求的数量得到第二统计值;
根据所述第一统计值和所述第二统计值实时计算第二流量控制级别。
5、根据权利要求 4所述的方法, 其特征在于, 所述根据所述第一统计值和所述第二统计 值实时计算第二流量控制级别包括:
判断所述第一统计值是否小于第一预定值,
当所述第一统计值小于所述第一预定值时, 将当前的第二流量控制级别下调一级; 当所述第一统计值不小于所述第一预定值时, 根据所述第一统计值及所述第二统计值计 算当前统计周期内核心网的应答响应率,
如果所述应答响应率大于等于第一比例时, 将当前的第二流量控制级别下调一级; 如果所述应答响应率小于第二比例时, 将当前的第二流量控制级别上调一级; 如果所述应答响应率大于等于所述第二比例小于所述第一比例时,根据所述第一统计值、 第二统计值及所述当前统计周期内的应答响应率按照预设规则对当前的第二流量控制级别进 行调整。
6、 根据权利要求 4或 5所述的方法, 其特征在于, 所述根据所述第一统计值、 第二统计 值及所述所述当前统计周期内的应答响应率按照预设规则对当前的第二流量控制级别进行调 整包括:
根据所述当前统计周期内核心网的应答响应率及前一统计周期内核心网的应答响应率计 算得到应答响应率的相对变化率;
根据所述第一统计值及所述第二统计值计算得到在当前统计周期内核心网的应答响应 量, 并根据所述当前统计周期内核心网的应答响应量及前一统计周期内核心网的应答响应量 计算得到应答响应量的相对变化率;
根据当前统计周期内得到的第一统计值及前一统计周期内得到的第一统计值计算得到发 往核心网的业务请求的变化率;
计算所述应答响应率的相对变化率与所述应答响应量的相对变化率的和; 根据所述应答响应率的相对变化率与所述应答响应量的相对变化率的和及所述业务请求 的变化率对当前的第二流量控制级别进行调整。
7、根据权利要求 6所述的方法, 其特征在于, 所述根据所述应答响应率的相对变化率与 所述应答响应量的相对变化率的和及所述业务请求的变化率对当前的第二流量控制级别进行 调整包括:
当所述应答响应率的相对变化率与所述应答响应量的相对变化率的和大于等于零时, 判 断所述业务请求的变化率是否大于第二预定值,
如果所述业务请求的变化率大于所述第二预定值, 则将当前的第二流量控制级别下调一 级;
如果所述业务请求的变化率等于所述第二预定值, 则将维持当前的第二流量控制级别不 变;
如果所述业务请求的变化率小于所述第二预定值, 则将当前的第二流量控制级别上调一 级。
8、根据权利要求 6所述的方法, 其特征在于, 所述根据所述应答响应率的相对变化率与 所述应答响应量的相对变化率的和及所述业务请求的变化率对当前的第二流量控制级别进行 调整包括:
当所述应答响应率的相对变化率与所述应答响应量的相对变化率的和小于零时, 判断所 述发往核心网的业务请求的变化率是否小于第三预定值,
如果所述业务请求的变化率不小于所述第三预定值, 则将当前的第二流量控制级别上调 一级;
如果所述业务请求的变化率小于所述第三预定值, 则将维持当前的第二流量控制级别不 变。
9、根据权利要求 6所述的方法, 其特征在于, 所述计算所述应答响应率的相对变化率与 所述应答响应量的相对变化率的和包括:分别将所述应答响应率的相对变化率乘以第一权值、 将所述应答响应量的相对变化率乘以第二权值, 之后, 将乘以第一权值后的应答响应率的相 对变化率与乘以第二权值后的应答响应量的相对变化率相加得到所述应答响应率的相对变化 率与所述应答响应量的相对变化率的和。
10、 根据权利要求 7所述的方法, 其特征在于, 所述当所述应答响应率的相对变化率与 所述应答响应量的相对变化率的和大于等于零时, 判断所述业务请求的变化率是否大于第二 预定值之前, 所述方法还包括:
判断当所述应答响应率的相对变化率与所述应答响应量的相对变化率的和是否大于第四 预定值,
如果小于所述第四预定值, 则将当前的第二流量控制级别上调一级;
如果不小于所述第四预定值, 则执行判断所述业务请求的变化率是否大于第二预定值的 操作。
11、 根据权利要求 8所述的方法, 其特征在于, 当所述应答响应率的相对变化率与所述 应答响应量的相对变化率的和小于零时, 判断所述业务请求的变化率是否小于第三预定值之 前, 所述方法还包括:
判断当所述应答响应率的相对变化率与所述应答响应量的相对变化率的和是否小于第五 预定值,
如果小于所述第五预定值, 则将当前的第二流量控制级别上调一级;
如果不小于所述第五预定值, 则执行判断所述业务请求的变化率是否大于第三预定值的 操作。
12、 一种流量控制设备, 其特征在于, 所述设备包括: 第一确定模块、 第二确定模块、 比较执行模块;
所述第一确定模块, 用于按照第一控制原则实时确定第一流量控制级别, 所述第一控制 原则根据核心网对业务请求的失败应答进行流量控制, 所述失败应答所携带的失败原因为拥 塞;
所述第二确定模块, 用于按照第二控制原则实时确定第二流量控制级别, 所述第二控制 原则根据核心网对业务请求的响应时延进行流量控制;
所述比较执行模块, 用于当对发往核心网的业务流量进行控制时, 比较当前所述确定模 块得到的第一流量控制级别与第二流量控制级别的大小, 从所述第一流量控制级别和所述第 二流量控制级别中选出流量控制级别较大的流量控制级别对发往核心网的业务流量进行控 制。
13、 根据权利要求 12所述的设备, 其特征在于, 所述第一确定模块包括: 第一调整单元, 用于当接收到所述失败应答时, 将当前的第一流量控制级别上调一级, 并设置第一预设时间;
第二调整单元, 用于在所述第一预设时间内, 维持当前的第一流量控制级别不变直到达 到所述第一预设时间, 则设置第二预设时间;
第三调整单元, 用于在所述第二预设时间内, 根据所述失败应答对当前的第一流量控制 级别进行调整。
14、 根据权利要求 13所述的设备, 其特征在于, 所述第三调整单元包括:
第一调整子单元, 用于在所述第二预设时间内接收到所述失败应答时, 将所述第二预设 时间置零, 并将当前的第一流量控制级别上调一级, 重新设置所述第一预设时间, 通知所述 第二调整单元执行在在所述第一预设时间内维持当前的第一流量控制级别不变直到达到所述 第一预设时间则设置第二预设时间的操作;
判断子单元, 用于在所述第二预设时间内未接收到所述失败应答时, 维持当前的第一流 量控制级别不变直到达到所述第二预设时间,判断当前的第一流量控制级别是否为预定级别; 第二调整子单元, 用于当所述判断子单元得出当前的第一流量控制级别不为所述预定级 别时, 将当前的第一流量控制级别下调一级, 重新设置所述第二预设时间, 并通知所述第三 调整单元执行在所述第二预设时间内根据所述失败应答对当前的第一流量控制级别进行调整 的操作;
第三调整子单元, 用于当所述判断子单元得出当前的第一流量控制级别为所述预定级别 时, 将当前的第一流量控制级别下调一级。
15、 根据权利要求 12所述的设备, 其特征在于, 所述第二确定模块包括:
确定单元, 用于确定统计周期和业务超时时间;
第四调整单元, 用于在当前的统计周期内, 统计发往核心网的业务请求的数量得到第一 统计值, 并在当前的业务超时时间到时, 统计所述核心网未做出应答的业务请求的数量得到 第二统计值;
第五调整单元,用于根据所述第一统计值和所述第二统计值实时计算第二流量控制级别。
16、 根据权利要求 15所述的设备, 其特征在于, 所述第五调整单元包括: 判断子单元, 用于判断所述第一统计值是否小于第一预定值;
第一执行子单元, 用于当所述判断子单元得出所述第一统计值小于所述第一预定值时, 将当前的第二流量控制级别下调一级;
第二执行子单元,用于当所述判断子单元得出所述第一统计值不小于所述第一预定值时, 根据所述第一统计值及所述第二统计值计算当前统计周期内核心网的应答响应率;
第三执行子单元,用于如果所述第二执行子单元得到的应答响应率大于等于第一比例时, 将当前的第二流量控制级别下调一级;
第四执行子单元, 用于如果所述第二执行子单元得到的应答响应率小于第二比例时, 将 当前的第二流量控制级别上调一级;
第五执行子单元, 用于如果所述第二执行子单元得到的应答响应率大于等于所述第二比 例小于所述第一比例时, 根据所述第一统计值、 第二统计值及所述当前统计周期内的应答响 应率按照预设规则对当前的第二流量控制级别进行调整。
17、 根据权利要求 15或 16所述的设备, 其特征在于, 所述第五执行子单元, 具有用于 根据所述当前统计周期内核心网的应答响应率及前一统计周期内核心网的应答响应率计算得 到应答响应率的相对变化率;
根据所述第一统计值及所述第二统计值计算得到在当前统计周期内核心网的应答响应 量, 并根据所述当前统计周期内核心网的应答响应量及前一统计周期内核心网的应答响应量 计算得到应答响应量的相对变化率;
根据当前统计周期内得到的第一统计值及前一统计周期内得到的第一统计值计算得到发 往核心网的业务请求的变化率;
计算所述应答响应率的相对变化率与所述应答响应量的相对变化率的和;
根据所述应答响应率的相对变化率与所述应答响应量的相对变化率的和及所述业务请求 的变化率对当前的第二流量控制级别进行调整。
18、根据权利要求 17所述的设备, 其特征在于, 当所述第五执行子单元用于根据所述应 答响应率的相对变化率与所述应答响应量的相对变化率的和及所述业务请求的变化率对当前 的第二流量控制级别进行调整时, 具体用于当所述应答响应率的相对变化率与所述应答响应 量的相对变化率的和大于等于零时, 判断所述业务请求的变化率是否大于第二预定值, 如果 所述业务请求的变化率大于所述第二预定值, 则将当前的第二流量控制级别下调一级; 如果 所述业务请求的变化率等于所述第二预定值, 则将维持当前的第二流量控制级别不变; 如果 所述业务请求的变化率小于所述第二预定值, 则将当前的第二流量控制级别上调一级。
19、根据权利要求 17所述的设备, 其特征在于, 当所述第五执行子单元用于根据所述应 答响应率的相对变化率与所述应答响应量的相对变化率的和及所述业务请求的变化率对当前 的第二流量控制级别进行调整时, 具体用于当所述应答响应率的相对变化率与所述应答响应 量的相对变化率的和小于零时, 判断所述业务请求的变化率是否小于第二预定值, 如果所述 业务请求的变化率不小于所述第三预定值, 则将当前的第二流量控制级别上调一级; 如果所 述业务请求的变化率小于所述第三预定值, 则将维持当前的第二流量控制级别不变。
20、根据权利要求 17所述的设备, 其特征在于, 当所述第五执行子单元用于计算所述应 答响应率的相对变化率与所述应答响应量的相对变化率的和时, 具体用于分别将所述应答响 应率的相对变化率乘以第一权值、 将所述应答响应量的相对变化率乘以第二权值, 之后, 将 乘以第一权值后的应答响应率的相对变化率与乘以第二权值后的应答响应量的相对变化率相 加得到所述应答响应率的相对变化率与所述应答响应量的相对变化率的和。
21、 根据权利要求 18所述的设备, 其特征在于, 所述设备还包括: 第一判断模块, 用于 判断当所述应答响应率的相对变化率与所述应答响应量的相对变化率的和是否大于第四预定 值, 如果小于所述第四预定值, 则将当前的第二流量控制级别上调一级; 如果不小于所述第 四预定值, 则通知所述第五执行子单元执行判断所述业务请求的变化率是否大于第二预定值 的操作。
22、 根据权利要求 19所述的设备, 其特征在于, 所述设备还包括: 第二判断模块, 用于 判断当所述应答响应率的相对变化率与所述应答响应量的相对变化率的和是否小于第五预定 值, 如果小于所述第五预定值, 则将当前的第二流量控制级别上调一级; 如果不小于所述第 五预定值, 则通知所述第五执行子单元执行判断所述业务请求的变化率是否大于第三预定值 的操作。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103874133A (zh) * 2012-12-10 2014-06-18 深圳国人通信有限公司 一种带宽控制的方法、装置及接入点设备

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1937587A (zh) * 2006-09-07 2007-03-28 华为技术有限公司 一种实现业务流量控制的方法及系统
CN101179831A (zh) * 2006-11-07 2008-05-14 中兴通讯股份有限公司 基站和无线网络控制器之间的拥塞控制系统
CN101459933A (zh) * 2009-01-04 2009-06-17 北京航空航天大学 拥塞控制方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE518720C2 (sv) * 2001-02-07 2002-11-12 Ericsson Telefon Ab L M Anordning och förfarande relaterande till trafikstyrning

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1937587A (zh) * 2006-09-07 2007-03-28 华为技术有限公司 一种实现业务流量控制的方法及系统
CN101179831A (zh) * 2006-11-07 2008-05-14 中兴通讯股份有限公司 基站和无线网络控制器之间的拥塞控制系统
CN101459933A (zh) * 2009-01-04 2009-06-17 北京航空航天大学 拥塞控制方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103874133A (zh) * 2012-12-10 2014-06-18 深圳国人通信有限公司 一种带宽控制的方法、装置及接入点设备

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