WO2015085525A1 - Procédé et dispositif de réalisation de qualité d'expérience (qoe) - Google Patents

Procédé et dispositif de réalisation de qualité d'expérience (qoe) Download PDF

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Publication number
WO2015085525A1
WO2015085525A1 PCT/CN2013/089169 CN2013089169W WO2015085525A1 WO 2015085525 A1 WO2015085525 A1 WO 2015085525A1 CN 2013089169 W CN2013089169 W CN 2013089169W WO 2015085525 A1 WO2015085525 A1 WO 2015085525A1
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WIPO (PCT)
Prior art keywords
service
time interval
qos parameters
data packet
gateway device
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PCT/CN2013/089169
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English (en)
Chinese (zh)
Inventor
苑婷婷
韩广林
费泽松
白伟
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/089169 priority Critical patent/WO2015085525A1/fr
Priority to CN201380003082.9A priority patent/CN104871479A/zh
Publication of WO2015085525A1 publication Critical patent/WO2015085525A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a quality of experience (Quality of
  • QoS Quality of Service
  • Traditional QoS technology is discrete and objective through packet loss rate and bandwidth. Indicators measure the quality of service, but these parameters do not fully reflect whether the transmission status of the wireless network truly meets the needs of users.
  • QoE represents the user's experience and feelings about the service and the network by means of a near-quantitative method, which can accurately reflect the gap between the current service and the quality of the network and the user's expectations.
  • QoE is a user's evaluation of the feeling of using the service. It is not only limited by the technical performance of the network, but also affected by various technical and non-technical factors that affect the user's perception. Therefore, the QoE value cannot be obtained directly through the network parameters. For example, video services, whose QoE is obtained indirectly through network QoS parameters.
  • IP Internet Protocol
  • QCI QoS Class Identifier
  • GRR Guaranteed Bit Rate
  • PDB Packet Delay Budget
  • GBR refers to the rate of each IP packet
  • PDB refers to each The delay specified by an IP data packet. Therefore, the prior art guarantees the QoS of each IP data packet, so that the flexibility of the network element such as the base station is reduced, and the resource cannot be flexibly allocated to transmit the IP data packet. If, if it can not meet the QoS of an IP packet It is expected that packet loss may occur, resulting in an increase in packet loss rate. Summary of the invention
  • the embodiment of the invention provides a method and a device for implementing the quality of experience QoE, so as to enhance the flexibility of the network element, reduce the packet loss rate, and ensure the QoE of the user.
  • an embodiment of the present invention provides a method for implementing an experience quality QoE, where the method includes:
  • the QoS parameter includes a bandwidth BPI per time interval and a packet delay PDPI per time interval;
  • the BPI is the service in the The average data rate of all packets within the time interval;
  • the PDPI is the delay of the last packet of the service within the time interval;
  • an embodiment of the present invention provides an apparatus for implementing quality of experience QoE, where the apparatus includes:
  • An acquisition module configured to obtain a time interval of the service
  • the obtaining module is further configured to obtain a quality of service QoS parameter of the service in the time interval, where the QoS parameter includes a bandwidth BPI per time interval and a packet delay PDPI per time interval; a BPI is an average data rate of all data packets of the service in the time interval; the PDPI is a delay of a last data packet of the service in the time interval; and a processing module, configured to: When the time interval comes, the resource is allocated for the service according to the QoS parameter obtained by the acquiring module.
  • FIG. 1 is a flowchart of a method for implementing QoE provided by the embodiment
  • Figure 2 is a diagram of the structure of the QoE implementation device provided by the embodiment.
  • Figure 3 is a view of the present invention: another embodiment of the QoE implementation device provided by the embodiment
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • CDMA Code Division Multiple
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDM Orthogonal Frequency OFDM (Orthogonal Frequency-Division Multiple Access) system
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the user equipment involved in the present application may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or a wireless modem. Other processing equipment.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be referred to as a system, a Subscriber Unit, a Subscriber Station, and a Mobile Station. Mobile, Remote Station, Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the network access node involved in the present application may be, for example, a base station and a radio network controller.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved Node B in LTE (abbreviated as Node B).
  • eNodeB can also be a cluster head of a user cluster in D2D communication, which is not limited in this application.
  • FIG. 1 is a flowchart of a method for implementing QoE according to an embodiment of the present invention. As shown in FIG. 1, the implementation method of the QoE provided by the embodiment of the present invention includes:
  • the QoS parameter includes a bandwidth (Bandwidth per interval, BPI for short) and a packet delay per interval (Packet delay per interval).
  • BPI bandwidth per interval
  • Packet delay per interval The PPI is the average data rate of all data packets of the service in the time interval; the PDPI is the delay of the last data packet of the service in the time interval.
  • the implementation method of the QoE provided by the embodiment of the present invention can be applied to various communication systems, such as a 2G, 3G communication system, and a next generation communication system, such as an LTE network.
  • the execution body of the QoE implementation method provided by the embodiment of the present invention may be an implementation device of QoE.
  • the implementation device of the QoE may specifically be a network element device in a communication system, for example, a gateway device or a serving network access node of a user equipment, and the gateway device may be, for example, a packet data network gateway (Packet Data Network Gateway).
  • the service network access node may be, for example, an eNodeB.
  • the service may be, for example, a video service, a Voice over Internet Protocol (VOIP), or a network television.
  • the video service may be, for example, a video conference, a live broadcast, or a dynamic adaptive streaming (Dynamic Adaptive Streaming over). HTTP, referred to as DASH).
  • the time interval of the service can be determined by the operator according to the operation needs. Seeking and defining the type of service, different types of services have different QoS requirements, so the size of the time interval set for them, that is, the duration is also different.
  • the operator can define the corresponding time interval for different types of video services, for example: the time interval of the video conference is l/24 ms, the interval of the live broadcast is 400 ms, and the interval of the DASH is It is 2s.
  • the start and end of the time interval of the service may be defined by the first data packet and the last data packet of the service in the time interval, respectively.
  • whether the time interval comes is determined by whether the first data packet of the time interval is detected.
  • the matching relationship between the service type and the time interval set by the operator may be stored in a Policy and Charging Rules Function (PCRF) for providing the service flow bearer resource guarantee and the flow charging policy for the user.
  • PCRF Policy and Charging Rules Function
  • the matching relationship between the service type set by the operator and the time interval is saved in the user equipment.
  • the QoS parameters of the service include the BPI and the PDPI. It should be noted that the QoS parameters of the service provided in the embodiment of the present invention also include the QCI, the priority, and the lost in the prior art. Parameters such as Packet Error Loss Rate (PELR). Further, the QoS parameters of the service provided in the embodiment of the present invention are based on the prior art, and two new parameters (BPI and PDPI) are added. . The BPI and the PDPI are both defined based on a time interval, that is, the BPI and the PDPI are QoS parameters of the service in the time interval, and the scope of the BPI and the PDPI is in the service phase. Within the matching time interval, where:
  • the BPI refers to the average data rate of all data packets in the time interval matched by the service, and may reflect the bandwidth of the service in the time interval matched with the service; the BPI is different from the GBR in the prior art:
  • the GBR in the prior art is defined as guaranteeing the rate of each data packet, and the BPI in the embodiment of the present invention is defined as the average rate of all data packets in a time interval of the guaranteed service, regardless of the rate of each data packet.
  • the PDPI refers to the delay of the last data packet in the time interval that the service matches, and may reflect the time delay of the service in the time interval matched with the service; the PDPI is different from the PDB in the prior art:
  • the PDB in the prior art defines the delay specified for each data packet, that is, each data packet must be transmitted within a specified time, and the PDPI in the embodiment of the present invention is defined as ensuring that the service is in one.
  • the delay of the last packet in the time interval regardless of the speed of packet transmission before the last packet.
  • the method for implementing QoE provided by the embodiment of the present invention is to set the service with its service type. Matching the time interval and setting the QoS parameter of the service in the time interval, when allocating resources for the service, all the data packets in the time interval of the service are used as a unit, and only The average data rate of all data packets in the time interval and the delay of the last data packet, without considering the bandwidth and delay of each data packet transmission, enhancing the flexibility of the network element device, in the channel If the conditions are not good or the resources are tight, as long as the average data rate of all the data packets in the time interval and the delay of the last data packet are guaranteed, the packet loss can be reduced, thereby reducing the packet loss rate. , improve the QoS of the entire system, thus ensuring the user's QoE.
  • the following implementations of the QoE implementation method provided by the embodiment of the present invention are two scenarios of the gateway device and the serving network access node of the user equipment, respectively, and the QoE provided by the embodiment of the present invention is provided.
  • the implementation method is described in detail:
  • the execution subject is a gateway device:
  • the implementation manner of the time interval for the gateway device to obtain the service may include any one of the following: Mode 1: The gateway device receives the service request sent by the user equipment, where the service request includes the type of the service, and according to the type of the service, the query The matching relationship between the pre-acquired service type and the time interval, and obtains a time interval that matches the type of the service.
  • the gateway device receives a service request sent by the user equipment, where the service request includes a type of the service and a time interval that matches a type of the service; and acquiring, according to the service request, the service The time interval at which the type matches.
  • the user equipment searches for a corresponding time interval in the matching relationship between the saved service type and the time interval according to the type of the service, and sends the corresponding time interval to the gateway device.
  • the service request further includes a QoE requirement of the service;
  • a QoE requirement of the service refers to a quality of experience requirement of the user; for example, a QoE requirement of the video service refers to a requirement of a video quality that the user needs to see , can be evaluated by the user's Mean Opinion Score (MOS).
  • MOS Mean Opinion Score
  • the gateway device acquires QoS parameters of the service in the time interval according to the QoE requirement of the service, the type of the service, the time interval, and a preset QoS policy, where the QoS parameter includes The BPI and the PDPI.
  • the gateway device may send the QoS parameter and the time interval to the serving network access node, so that The serving network access node allocates resources for the service according to the QoS parameter when the time interval arrives. Determining, by the gateway device, whether the time interval comes according to the received sequence information of the data packet of the service; if it is determined that the time interval is obtained, the gateway device is configured according to the
  • the gateway device determines whether the time interval is coming.
  • the gateway device detects the first time interval according to the received sequence information of the data packet of the service. Whether the data packet arrives; if the first data packet of the time interval is detected, the gateway device determines that the time interval comes.
  • video data is first compression-coded, and the encoded video data frame has an I-frame (Intra coded frame), a P-frame (Predicted pictures), and a B-frame (Bi- Directional predictive pictures ) Sanhe.
  • the parameters such as the size and importance of the frame are different, which results in different bandwidths for transmission.
  • the required QoS and QoE levels are also different. For example, the I frame is the largest and most important, then you need to allocate a larger bandwidth to transmit I. Frame, ensure that the I frame is as error-free as possible during transmission, that is, its QoS level is higher.
  • the encoding of the video data and the transmission of the video data frame have certain rules, such as: following one I frame followed by two B frames and one P frame; of course, in practice, for different video services, after each I frame
  • the number of B frames and P frames is not limited to the examples described herein.
  • the video data frame carries the transmission information of the video data frame in the packet header of the data packet.
  • the sequence information in the packet header of the data packet may be used to indicate the type of the video data frame (I frame, B). Frame or P frame).
  • the duration and duration of one video data frame are fixed.
  • the time interval of the service can be defined by a combination of I frames, B frames, and P frames, for example, each The time interval can start with an I frame followed by two B frames and one P frame, with only one I frame in one time interval. Therefore, the gateway device may determine, according to the received sequence information of the data packet of the service, whether the first data packet of the time interval arrives. When the gateway device detects the data packet carrying the I frame, determining that the data packet is the first data packet of the time interval, determining that the time interval comes; the gateway device allocates according to the QoS parameter. A resource required to transmit all packets of the service during the time interval.
  • the gateway device sends all the data packets of the service in the time interval to the serving network access node of the user equipment in sequence using the allocated resources in the time interval.
  • the service entity is the service network access node of the user equipment:
  • a feasible implementation manner of the service network access node acquiring the time interval of the service is: the service network access node receives the time interval of the service sent by the user equipment or the gateway device.
  • the serving network access node receives a QoS parameter of the service sent by the gateway device in the time interval, where the QoS parameter includes the BPI and the PDPI.
  • the serving network access node sends all the data packets of the service in the time interval to the user equipment in sequence during the time interval.
  • FIG. 2 is a schematic structural diagram of an apparatus for implementing QoE according to an embodiment of the present invention.
  • the implementation apparatus 200 of the QoE provided by the embodiment of the present invention includes: an obtaining module 201 and a processing module 202, where:
  • the obtaining module 201 is configured to acquire a time interval of the service.
  • the obtaining module 201 is further configured to obtain a quality of service QoS parameter of the service in the time interval, where the QoS parameter includes a bandwidth BPI per time interval and a packet delay PDPI per time interval;
  • the BPI is an average data rate of all data packets of the service in the time interval;
  • the PDPI is a delay of a last data packet of the service in the time interval;
  • the processing module 202 is configured to allocate resources for the service according to the QoS parameter acquired by the acquiring module 201 when the time interval comes.
  • the device for implementing the QoE provided by the embodiment of the present invention may be used to implement the technical solution of the method embodiment shown in FIG. 1.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the obtaining module 201 is specifically configured to: receive a service request sent by the user equipment, where the service request includes a type of the service, and query a pre-acquired service type according to the type of the service. A matching relationship with the time interval, and obtaining a time interval that matches the type of the service.
  • the obtaining module 201 is specifically configured to: receive a service request sent by the user equipment, where the service request includes a type of the service and a time interval that matches a type of the service; and acquiring, according to the service request, The time interval at which the type of the service matches.
  • the service request further includes a QoE requirement of the service.
  • the obtaining module 201 is specifically configured to: acquire, according to the QoE requirement of the service, the type of the service, the time interval, and a preset QoS policy, the service in the time interval. a QoS parameter, wherein the QoS parameter includes the BPI and the PDPI.
  • FIG. 3 is another schematic structural diagram of an apparatus for implementing QoE according to an embodiment of the present invention.
  • the QoE implementation apparatus 300 provided by the embodiment of the present invention is based on the embodiment shown in FIG. 2, and further includes: an obtaining module 201 and a processing module 202, and each module also has the embodiment shown in FIG. The features described.
  • the QoE implementation apparatus 300 further includes: a sending module 301, where: the sending module 301 is configured to send the QoS parameter and the time interval to the serving network access node, to And causing the serving network access node to allocate resources for the service according to the QoS parameter when the time interval arrives.
  • the processing module 202 is specifically configured to: determine, according to the received sequence information of the data packet of the service, whether the time interval arrives; if it is determined that the time interval arrives, according to the QoS parameter , allocating resources for the business.
  • processing module 202 is specifically configured to: detect, according to the received sequence information of the data packet of the service, whether a first data packet of the time interval arrives; if the first time interval of the time interval is detected The data packet determines that the time interval comes.
  • the sending module 301 is further configured to: in the time interval, send, by using the allocated resources, all data packets of the service in the time interval to the service network access of the user equipment. node.
  • the obtaining module 201 is specifically configured to: receive a time interval of the service sent by the user equipment or the gateway device.
  • the obtaining module 201 is specifically configured to: receive a QoS parameter of the service sent by the gateway device in the time interval, where the QoS parameter includes the BPI and the PDPI.
  • processing module 202 is specifically configured to: receive a data packet of the service sent by the gateway device, and determine, according to the sequence information of the received data packet, the service in the time interval. The first data packet and the last data packet; allocate resources for the service according to the QoS parameter.
  • the sending module 301 is further configured to send, by using the allocated resources, all data packets of the service in the time interval to the user equipment in sequence during the time interval.
  • FIG. 4 is still another schematic structural diagram of an apparatus for implementing QoE according to an embodiment of the present invention.
  • the QoE implementation apparatus 400 provided by the embodiment of the present invention includes: a processor 401, a memory 402, and a communication interface 403, and further includes a communication bus 404; the processor 401, the memory 402, and the communication interface 403 are connected to each other through a communication bus 404.
  • the processor 401 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP processor, etc.), or a digital signal processor (DSP), an application specific integrated circuit. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete hardware components.
  • CPU central processing unit
  • NP processor network processor
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • FPGA field-programmable gate array
  • the memory 402 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 402 may contain high speed RAM and may also include non-volatile memory, such as at least one disk storage.
  • the communication interface 403 is used for communication between the implementation device 400 of the QoE and other devices; the data packet can be received or transmitted through the communication interface.
  • the processor 401 When the QoE implementation device 400 is running, the processor 401 is in communication with the memory 402, and the processor 401 executes the program stored in the memory 402, such that the QoE implementation device 400 performs the QoE provided by any embodiment of the present invention.
  • the method for implementing the method includes:
  • the QoS parameter includes a bandwidth BPI per time interval and a packet delay PDPI per time interval;
  • the BPI is the service in the The average data rate of all packets within the time interval;
  • the PDPI is the delay of the last packet of the service within the time interval;
  • the time interval for obtaining the service includes:
  • the gateway device receives a service request sent by the user equipment, where the service request includes a type of the service;
  • the gateway device queries the matching relationship between the pre-acquired service type and the time interval according to the type of the service, and obtains a time interval that matches the type of the service.
  • the time interval for obtaining the service includes:
  • the gateway device receives a service request sent by the user equipment, where the service request includes a type of the service and a time interval that matches a type of the service;
  • the gateway device acquires a time that matches the type of the service according to the service request. Interval.
  • the service request further includes a QoE requirement of the service
  • the QoS parameter includes a BPI and a PDPI, including:
  • the gateway device acquires QoS parameters of the service in the time interval according to the QoE requirement of the service, the type of the service, the time interval, and a preset QoS policy, where the QoS parameter includes The BPI and the PDPI.
  • the method further includes:
  • allocating resources for the service according to the QoS parameter includes:
  • the gateway device allocates resources for the service according to the QoS parameter.
  • the gateway device determines, according to the received sequence information of the data packet of the service, whether the time interval arrives, including:
  • the gateway device detects, according to the received sequence information of the data packet of the service, whether a first data packet of the time interval arrives;
  • the gateway device determines that the time interval has arrived.
  • the method further includes:
  • the gateway device sends all the data packets of the service in the time interval to the serving network access node of the user equipment in sequence during the time interval.
  • the time interval for obtaining the service includes: serving network access The time interval at which the node receives the service sent by the user equipment or the gateway device.
  • the obtaining the QoS parameter of the service in the time interval, where the QoS parameter includes a BPI and a PDPI including:
  • the serving network access node receives a QoS parameter of the service sent by the gateway device in the time interval, where the QoS parameter includes the BPI and the PDPI.
  • allocating resources for the service according to the QoS parameter includes:
  • the serving network access node Receiving, by the serving network access node, the data packet of the service sent by the gateway device; the serving network access node determining, according to the received sequence information of the data packet of the service, the service at the time The first packet and the last packet in the interval;
  • the serving network access node allocates resources for the service according to the QoS parameters.
  • the method further includes:
  • the serving network access node sends all the data packets of the service in the time interval to the user equipment in sequence during the time interval.

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

Abstract

procédé et dispositif de réalisation de qualité d'expérience (qoe). Le procédé consiste à acquérir un intervalle de temps d'un service et à acquérir un paramètre de qualité de service (QoS) du service durant l'intervalle de temps. Le paramètre de QoS comprend un BPI de bande passante à chaque intervalle de temps et un PDPI de retard de paquet de données à chaque intervalle de temps. Le BPI est un débit de données moyen de tous les paquets de données du service durant l'intervalle de temps, et le PDPI est un retard du dernier paquet de données du service durant l'intervalle de temps. Ensuite, quand l'intervalle de temps est atteint, le procédé attribue une ressource au service, d'après le paramètre de QoS. Le procédé et le dispositif de réalisation de qualité d'expérience (QoE) fournis dans les modes de réalisation de la présente invention permettent d'améliorer la flexibilité d'un dispositif d'élément de réseau, de réduire le taux de perte de paquets et d'améliorer globalement la QoS du système, ce qui garantit la QoE d'un utilisateur.
PCT/CN2013/089169 2013-12-12 2013-12-12 Procédé et dispositif de réalisation de qualité d'expérience (qoe) WO2015085525A1 (fr)

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CN201380003082.9A CN104871479A (zh) 2013-12-12 2013-12-12 体验质量QoE的实现方法及装置

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CN102752763A (zh) * 2012-07-09 2012-10-24 北京北方烽火科技有限公司 一种lte系统中实用型比例公平调度度量值计算方法及装置

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