WO2012155765A1 - Procédé et dispositif pour assurer la qualité de service d'un service d'application dans un système evdo - Google Patents

Procédé et dispositif pour assurer la qualité de service d'un service d'application dans un système evdo Download PDF

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Publication number
WO2012155765A1
WO2012155765A1 PCT/CN2012/074547 CN2012074547W WO2012155765A1 WO 2012155765 A1 WO2012155765 A1 WO 2012155765A1 CN 2012074547 W CN2012074547 W CN 2012074547W WO 2012155765 A1 WO2012155765 A1 WO 2012155765A1
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WIPO (PCT)
Prior art keywords
service type
application service
qos
packet
traffic
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Application number
PCT/CN2012/074547
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English (en)
Chinese (zh)
Inventor
唐灵灵
翟来国
佟志新
喻磊
王跃
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中兴通讯股份有限公司
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Publication of WO2012155765A1 publication Critical patent/WO2012155765A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/803—Application aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/822—Collecting or measuring resource availability data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals

Definitions

  • the present invention belongs to the field of communications technologies, and in particular, to a method and apparatus for guaranteeing user service quality of service (QoS) in a CDMA2000 lx-EVDO mobile communication system (referred to as EVDO system).
  • QoS quality of service
  • the CDMA2000 lx-EVDO wireless communication system is no longer only narrowly positioned to complete the functions of traditional business data such as file downloading and web browsing.
  • the wireless communication system requires different QoS guarantees for different transmission requirements (bandwidth, delay) proposed by users for different application services, but contradictory is wireless.
  • Limited network resources (bandwidth, connectivity) in the communication system This makes the traditional unidentified and differentiated management of application service data often lead to a higher level of network load, and a type of application service with higher quality of service requirements obtains less network resources, which seriously affects the user experience.
  • the user experience can be greatly improved, and the system resources of the entire network can be fully utilized.
  • the EVDO (Evolution Data Only) version A ( RevA ) supports a complete QoS architecture on the standard. It can carry different application services of the upper layer through multiple layers of the wireless link layer. Naturally, it can provide QoS guarantee for different application services of users. Most terminals do not support initiating multi-stream negotiation. All application services are carried on a single stream (primary connection). The main reason is that the general-purpose operating system and third-party application software and communication systems are relatively independent, and no EVDO chip is provided. QoS features. Summary of the invention
  • the technical problem to be solved by the present invention is to solve the problem of the QoS application in the current EVDO system, and to propose a method and device for ensuring the QoS of the user application service when the user carries various upper-layer application services on the primary connection single stream.
  • the technical solutions adopted by the present invention include:
  • a method for guaranteeing application service QoS in an EVDO system comprising:
  • the current main application service type is defined as the upper application service type that the user currently uses.
  • the packet is detected and counted on the primary connection stream, and the current main application service type of the user is identified, including:
  • the core network side (such as a Packet Data Service Node (PDSN)) identifies the service type corresponding to the packet in the packet header, and sends the packet to the wireless side.
  • PDSN Packet Data Service Node
  • the wireless side receives the packet sent by the core network side, and classifies and statistics the traffic of various services by using the packet identifier;
  • the wireless side determines the current main application service type of the user based on the traffic statistics.
  • the detecting and counting the packets on the primary connection stream are periodically detected and counted
  • the current detection algorithm of the main application service type is:
  • Tn the total traffic (in bytes) of the service type ⁇ current detection period n
  • Tsn Total traffic (in bytes) of the current detection period n for all service types
  • Rn service type A current detection period n traffic ratio
  • S n-1 the traffic ratio of the detection period n-1 on the service type A after filtering
  • ⁇ Filter detection time constant, ⁇ is a positive number.
  • the method further includes: when the wireless side receives the QoS application service type packet for the first time, directly adopting the service type corresponding to the packet as the current main application service type.
  • the method further includes:
  • the allocated network resources are released, so that the service type no longer obtains the QoS guarantee of the wireless side.
  • An apparatus for guaranteeing application service QoS in an EVDO system comprising: a main service type identification module and a resource allocation module;
  • the main service type identification module is configured to detect and collect the packets on the primary connection stream, and identify the current main application service type of the user.
  • the current main application service type is defined as the upper application service type currently used by the user.
  • a resource allocation module configured to determine a corresponding QoS resource allocation policy according to the current primary application service type, and perform network resource allocation on the wireless side.
  • the primary service type identification module includes:
  • a service type identifier sub-module configured to identify a service type corresponding to the packet in a packet header of the core network, and send the packet to the wireless side;
  • a traffic statistics sub-module configured to receive, by the wireless side, the packet sent by the core network, and collect and collect statistics on traffic of various services by using the packet identifier
  • the main service type judging sub-module is configured to determine, according to the traffic statistics, the current main application service type of the user.
  • the primary service type identification module is further configured to receive the first time when the wireless side receives
  • the service type corresponding to the packet is directly used as the current main application service type.
  • the device further includes a protection recovery module, configured to release the allocated network resource when the accumulated traffic or the average rate allocated to the current primary application service type exceeds a preset threshold. , so that the service type no longer obtains the QoS guarantee on the wireless side.
  • the present invention detects the current main application service of the user by detecting and counting the packets on the primary connection stream, and then according to the actual QoS of the application service.
  • Demand bandwidth, delay, etc.
  • QoS guarantee can be provided for application services with different transmission requirements, thereby greatly improving the user experience, and at the same time, the system resources of the entire network can be fully and rationally utilized.
  • FIG. 1 is a schematic diagram of a method for guaranteeing QoS of an application service in an EVDO system according to the present invention
  • FIG. 2 is a schematic flowchart of a method for guaranteeing QoS of an application service in an EVDO system according to the present invention
  • FIG. 3 is a schematic diagram of a first QoS application service received by a wireless side in the present invention. Schematic diagram of the processing flow of the type message;
  • FIG. 4 is a schematic diagram of a processing flow when a wireless side performs periodic detection according to the present invention
  • FIG. 5 is a schematic diagram of a protection recovery process according to the present invention
  • FIG. 6 is a schematic structural diagram of an apparatus for guaranteeing application service QoS in an EVDO system according to the present invention
  • FIG. 7 is a schematic diagram of a main service type identification module. detailed description
  • FIG. 1 is a schematic diagram of a method for guaranteeing QoS of an application service in an EVDO system according to the present invention.
  • an upper layer application service between an access terminal (AT, Access Terminal) and an App Server a core network side (PDSN) identifies the service packets through the Deep Pakcet Inspect (DPI) module, and identifies the packets of different application service types.
  • DPI Deep Pakcet Inspect
  • the identification is performed by different padding patterns.
  • the device After receiving the application service packet, the device performs classification traffic statistics on the packets of different application services, thereby identifying the current main application service of the user, that is, the main application service type.
  • the service is a left-slash line. Types of.
  • the radio side maps to the corresponding QoS resource allocation policy, and then performs resource allocation. Therefore, the radio interface includes an air interface (the RLP main connection) to obtain a transmission characteristic that satisfies the requirements of the upper layer application service, so that the user of the access terminal obtains a good experience and perception when performing the QoS application service.
  • the meanings of the characters are as follows: PCF: Packet Control Function, Packet Control Function Module; AppServer: Application Server, Application Server; Router: Router; RLP: Radio Link Protocol, Radio Link Protocol.
  • FIG. 2 is a schematic flowchart of a method for guaranteeing application service QoS in an EVDO system according to the present invention. As shown in FIG. 2, the method for guaranteeing application service QoS in the EVDO system of the present invention specifically includes the following steps:
  • Step 201 The wireless side receives the user application service packet sent by the core network, performs traffic statistics according to the service type of the upper layer application, and detects the current main application service type.
  • the wireless side receives the user application service packet sent by the core network side, and the packet header is identified by the core network side as the upper layer application service type corresponding to the service packet, such as file downloading, voice video, web browsing, and the like.
  • the traffic statistics are classified according to the upper-layer application service type classification, so as to detect and identify the current main application service type of the user.
  • This step specifically includes: (1) ID carrying: The core network side identifies the packets of different application service types of the user through the DPI function, and carries the packets to the wireless side through the packet identifier.
  • the wireless side receives the application service packets sent by the core network, and collects statistics on the traffic of various application services of the current user through the packet identifier.
  • the wireless side determines the current primary application service type based on the traffic statistics.
  • the primary application service type is defined as the upper-layer application service used by the user during the current time period. If the primary application service type is QoS application. For example, in the voice and video service, the wireless side can greatly improve the risk perception of the service of the user through the configured QoS resource allocation policy.
  • the main application service is measured based on the traffic of different services of the user, and gives a quantitative calculation and determination method.
  • the service type of the user application may change in a connection.
  • the wireless side applies all the application services in the period in each service detection period. Calculate the tradeoff based on the traffic flow to determine the type of primary application service that the current user uses during the current cycle.
  • the network resource will be re-allocated/updated according to the corresponding new QoS resource allocation policy.
  • the shortcoming of periodic service detection is that there is a certain detection hysteresis. For users who use stable and continuous application services, this detection is approximately accurate, but for users who make sudden small-traffic services (typically mobile phone users).
  • the hysteresis of such periodic detection may result in the user not being able to detect the user's main application service type on the wireless side, and the user has already ended the service.
  • the embodiment of the present invention In order to implement the QoS guarantee for the user who performs the bursty small-traffic service, and the resource allocation can be performed according to the QoS application service type packet when the user of the stable and continuous application service receives the QoS application service type packet for the first time, the embodiment of the present invention
  • the wireless side When the wireless side first receives the QoS application service type packet, it directly determines that the current application service type of the current user is the application service type corresponding to the first received packet, and performs network resource allocation accordingly. Therefore, in the embodiment of the present invention, the method of the present invention comprises two stages: 1. When first received
  • the QoS application service type packet When the QoS application service type packet is used, it is directly determined that the current application service type of the current user is the application service type corresponding to the first received packet; 2. When the QoS application service packet is not received for the first time, according to the service The detection period is detected. In each service detection period, the user's main application service type is obtained according to the traffic statistics.
  • Tn service type ⁇ the total traffic of the current detection period n (in bytes);
  • Tsn Total traffic of all service types in the current detection period n (in bytes); Rn: Service type A current detection period n proportion of traffic;
  • S n-1 the traffic ratio of the detection period n-1 on the service type A after filtering
  • ⁇ Filter detection time constant, ⁇ is a positive number. For calculation convenience, it is better to take natural numbers.
  • the purpose of using the filter to detect the time constant ⁇ is to smooth the detection and recognition result, thereby avoiding repeated changes of the user's main application service type detected in a plurality of consecutive service detection periods, resulting in frequent allocation and release of air interface resources.
  • the filter detection time constant ⁇ is configurable, which determines the weight of the result of the current detection cycle recognition being affected by the history detection cycle recognition result. The larger the filter detection time constant ⁇ is, the larger the weight of the history detection result is, and the smoother the result is, but the more the response to the current user application business change is lagging.
  • Step 202 The radio side determines, according to the current main application service type, a corresponding QoS resource.
  • Source allocation policy resource allocation for the user's primary connection;
  • the wireless side performs pre-set on the detected user main application service type.
  • This step specifically includes:
  • the wireless side determines the QoS resource allocation policy for ensuring the service configuration through the user main application service type.
  • QoS resource allocation policies and mapping relationships are flexible and configurable.
  • Resource allocation Resource allocation according to the configured wireless side QoS resource allocation policy, including bandwidth and scheduling priority.
  • step 203 the current main application service type is continuously monitored for the traffic and the average rate.
  • the allocated network resources are released.
  • the present invention provides a protection and recovery function for performing QoS application service guarantee, that is, the wireless side continuously monitors the traffic and the average rate of the application service (that is, the current main application service type) that the user obtains the QoS guarantee, at the traffic rate or the average rate.
  • the QoS protection threshold is exceeded, the allocated network resources are released.
  • Protection detection The wireless side monitors the cumulative traffic and average rate of the user after performing QoS application service and obtaining network resources for QoS guarantee in each protection detection period.
  • FIG. 3 is a schematic diagram of a process flow when the wireless side receives the first QoS application service type packet according to the present invention. As shown in FIG. 3, when the wireless side receives the first QoS application service type packet, the processing procedure includes:
  • Step 301 The wireless side receives the forward application service packet sent by the core network, where the forward application service packet carries the application service type of the application service packet payload.
  • Step 302 The wireless side parses the packet to obtain the application service type of the packet, and performs traffic statistics according to the application service type.
  • Step 303 Determine whether the application service type of the packet is a QoS application service type. If yes, go to 304. Otherwise, the processing flow is directly ended.
  • Step 304 Determine whether the current packet is the first QoS application service type packet, and if yes, use the application service type corresponding to the packet as the current primary application service type of the user, and go to step 305; Periodic detection mode processing.
  • Step 305 The QoS resource allocation policy corresponding to the main application service type determined by the wireless side searching step 304;
  • Step 306 Perform radio side resource allocation according to the found policy.
  • the wireless side receives the first QoS application service type packet.
  • it can also perform other manners. For example, when the wireless side receives the first QoS application service type packet, it can perform no processing. This has little effect on the QoS of the user who stably and continuously performs the application service.
  • FIG. 4 is a schematic diagram of a processing flow when the wireless side performs periodic detection according to the present invention. As shown in FIG. 4, during the continuous application of the user application service, the wireless side performs the main application service type detection and performs the wireless side in each service detection period.
  • the specific process of resource allocation is as follows:
  • Step 401 The period detection timer expires, and the wireless side starts periodic detection of the user application service type.
  • Step 402 Calculate the proportion of the traffic after filtering of the current application service type according to the proportion of the traffic of each application service type in the current detection period and the historical traffic proportion of the application service type in the previous period, and calculate the user's traffic ratio in the detection period.
  • the main application business type The main application business type.
  • the filtering process may not be performed, that is, the historical traffic proportion of each service type is not considered, and the main application service in the period is determined according to the traffic proportion of each application service type in the current detection period.
  • Step 403 Determine whether the current user application service type of the user changes. If no change occurs, the user has obtained the wireless side resource allocation required by the current application service, and the detection process ends. Otherwise, the process proceeds to step 404.
  • Step 404 The wireless side searches for a QoS resource allocation policy corresponding to the new primary application type.
  • Step 405 Perform, according to the new policy, update the wireless side resource allocation.
  • FIG. 5 is a schematic diagram of the protection recovery process in the present invention. As shown in FIG. 5, the process of performing protection recovery after the user obtains the QoS application service guarantee cumulative traffic or the average rate exceeds the protection threshold is as follows:
  • Step 501 The QoS protection detection timer expires, and the protection detection process is started.
  • Step 502 Calculate the cumulative traffic and the average rate after the user obtains the QoS application service guarantee, that is, calculate the accumulated traffic and the average rate allocated to the current main application service type.
  • Step 503 Determine whether the accumulated traffic or the average rate exceeds a preset threshold. If yes, go to 504. Otherwise, the protection detection process is directly ended.
  • FIG. 6 is a schematic structural diagram of an apparatus for guaranteeing application service QoS in an EVDO system according to the present invention.
  • the apparatus for guaranteeing application service QoS in the EVDO system of the present invention includes a main service type identification module 601 and a resource allocation module 602.
  • the main service type identification module 601 is configured to detect the packet on the primary connection stream. And the statistics, the user's current main application service type is identified, and the current main application service type is defined as the upper application service type that the user currently uses.
  • the main service type identification module 601 includes:
  • the service type identifier sub-module 6011 is configured to identify the service type corresponding to the packet in the packet header of the core network, and send the message to the wireless side.
  • the traffic statistics sub-module 6012 is configured to receive, on the wireless side, the packet sent by the core network, and collect and collect statistics on traffic of various services by using the packet identifier.
  • the main service type judging sub-module 6013 is configured to judge the current main application service type of the user on the radio side based on the traffic statistics.
  • the primary service type identification module 601 is further configured to: when the wireless side receives the QoS application service type packet for the first time, directly adopt the service type corresponding to the packet as the current primary application service type.
  • the resource allocation module 602 is configured to determine a corresponding QoS resource allocation policy according to the current primary application service type, and perform network resource allocation on the wireless side.
  • the device further includes a protection recovery module 603, configured to release the allocated network resource when the accumulated traffic or the average rate allocated to the current primary application service type exceeds a preset threshold, so that the service type is The QoS guarantee on the wireless side is no longer available.
  • a protection recovery module 603 configured to release the allocated network resource when the accumulated traffic or the average rate allocated to the current primary application service type exceeds a preset threshold, so that the service type is The QoS guarantee on the wireless side is no longer available.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention porte sur un procédé pour assurer la qualité de service (QoS) d'un service d'application dans un système EVDO. Une détection et des statistiques sont effectuées sur un paquet sur un flux unique de connexion principale, de manière à identifier un type de service d'application principal courant d'un utilisateur. Une stratégie d'attribution de ressources QoS correspondante est déterminée en fonction du type de service d'application principal courant, de manière à effectuer une attribution de ressource réseau côté sans fil. L'invention porte également sur un dispositif pour assurer la QoS d'un service d'application dans un système EVDO. Par utilisation des solutions selon la présente invention, la QoS de services d'application ayant des exigences de transmission différentes peut être assurée, ce qui améliore fortement l'expérience utilisateur, et permet par ailleurs d'obtenir une utilisation entièrement raisonnable de ressources système du réseau entier.
PCT/CN2012/074547 2011-09-01 2012-04-23 Procédé et dispositif pour assurer la qualité de service d'un service d'application dans un système evdo WO2012155765A1 (fr)

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CN106817313A (zh) * 2015-12-01 2017-06-09 北京慧点科技有限公司 一种网络流量快速分配的方法
CN107026766A (zh) * 2016-02-02 2017-08-08 中国移动通信集团河北有限公司 一种网络质量的评估检测方法及装置
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