WO2012136067A1 - 服务质量的优化方法及系统、网络侧网元 - Google Patents

服务质量的优化方法及系统、网络侧网元 Download PDF

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Publication number
WO2012136067A1
WO2012136067A1 PCT/CN2011/083321 CN2011083321W WO2012136067A1 WO 2012136067 A1 WO2012136067 A1 WO 2012136067A1 CN 2011083321 W CN2011083321 W CN 2011083321W WO 2012136067 A1 WO2012136067 A1 WO 2012136067A1
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Prior art keywords
measurement
terminal
network element
information
measurement result
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PCT/CN2011/083321
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English (en)
French (fr)
Inventor
韩立锋
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中兴通讯股份有限公司
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Priority claimed from CN201110084214.8A external-priority patent/CN102740379B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012136067A1 publication Critical patent/WO2012136067A1/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
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for optimizing service quality, and a network side network element.
  • BACKGROUND Quality of Service (QoS for short) is a security mechanism of a network, and is a technology for solving problems such as network delay and congestion.
  • the quality of service includes the bandwidth of transmission, the delay of transmission, and the packet loss rate of data.
  • the quality of service can be improved by ensuring the bandwidth of transmission, reducing the delay of transmission, reducing the packet loss rate of data, and delay jitter.
  • Network resources are always limited. As long as there is a situation of robbing network resources, there will be requirements for quality of service.
  • the quality of service is relative to the network service.
  • EPS Evolved Packet System
  • the basic granularity of QoS control is Bearer, BP, all data traffic on the same bearer will receive the same QoS guarantee, and different types of bearers provide different QoS guarantee.
  • the QoS class identifier QoS Class Identifier, QCI for short
  • Allocation and Retention Priority ARP
  • Guaranteed Bit Rate GRR
  • maximum bit rate MBR
  • MBR Maximum Bit Rate
  • AMBR Aggregate Maximum Bit Rate
  • a radio bearer Radio Bearer, RB for short
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • the control referred to as the MAC layer, performs scheduling, and different entities on the user plane jointly ensure data transmission of the RB, thereby ensuring the QoS requirements of the user.
  • the specific services provided by the PDCP sublayer may include: performing header compression and decompression; encrypting/decrypting user plane data and control plane data; providing a PDCP sequence number for use by a radio bearer.
  • the functions supported by the RLC sublayer include: Transmitting RLC Protocol Data Unit (PDU); Segmentation, Combination, and Reassembly of RLC Services Data Unit (SDU), etc.
  • Some of the main functions provided by the MAC sublayer include: mapping between logical channels and transport channels; hybrid automatic repeat request (HARQ); logic in user equipment (User Equipment, UE for short) Priority processing between channels; priority processing by dynamic scheduling between UEs; transmission format selection; logical channel priority management.
  • radio resource management Radio Resource Management, RRM for short
  • RRM Radio Resource Management
  • the main objective of the present invention is to provide an optimization solution for the quality of service, so as to at least solve the problem that the QoS parameters of the network side and the matching of the requirements of the service and the service are not suitable to meet the QoS requirements of the user. .
  • an optimization method of quality of service is provided.
  • the method for optimizing the QoS of the QoS according to the present invention includes the following steps:
  • the PDCP layer measures the control information; the network side network element receives the measurement result information reported by the terminal after measuring the data packet of the PDCP layer according to the PDCP layer measurement control information, and optimizes the QoS of the network according to the measurement result information.
  • the network side network element sends the PDCP layer measurement control information to the terminal by using the first dedicated message of the control plane; the terminal reports the measurement result information by using the second dedicated message of the control plane.
  • the method further includes: determining, by the terminal, the measurement mechanism according to the PDCP layer measurement control information, where the measurement mechanism includes one of the following: periodically reporting the measurement result information, the event The reporting of the triggering of the measurement result information, the measurement of the DPCP layer by the terminal, and the reporting of the measurement result information are all event triggering; the terminal measures the data packet of the PDCP layer according to the determined measurement mechanism, and reports the measurement result information.
  • the terminal reporting the measurement result information includes: the terminal sends an indication that the terminal has the measurement result information to be reported to the network side network element, and when the network side network element requests the terminal to report the measurement result information, the terminal reports the measurement to the network side network element.
  • the result information or, when the terminal cannot determine the manner of reporting the measurement result information from the PDCP layer measurement control information, the terminal determines whether to report the measurement result information to the network side network element.
  • the PDCP layer measurement control information includes at least one of the following: a target measurement quantity, a measured target process, measurement report information, and measurement trigger information.
  • the target measurement quantity includes a performance indicator of the PDCP packet and/or an identifier of the measurement service, where the performance indicator of the PDCP packet includes at least one of the following: throughput, packet loss rate, packet delay; the measurement service is an uplink service, and
  • the identification includes at least one of the following: an evolved packet system EPS bearer identity, a radio bearer identity, a QoS class identifier.
  • the packet delay is measured by: the terminal records the time when the data packet of the PDCP layer reaches the PDCP layer of the terminal.
  • the terminal subtracts tl from t2 to obtain a packet delay.
  • the measured target process is a process state in which the terminal is located when performing measurement, including at least one of the following: a handover process, a radio resource control RRC re-establishment process, and a normal service process.
  • the measurement report information is a period in which the terminal reports the measurement result information or an event that triggers the terminal to report the measurement result information, where the event includes at least one of the following: a predetermined time elapses after the measurement is started, and a storage space of the measurement result is greater than a predetermined threshold, The power of the terminal is lower than a predetermined threshold, and the measurement service ends.
  • the measurement trigger information is a trigger condition for the terminal to perform PDCP measurement, where the trigger condition includes at least one of the following: the wireless signal quality is lower than a predetermined threshold, the terminal is in a predetermined area, and the user's satisfaction is lower than a predetermined requirement.
  • the network side network element sends the PDCP layer measurement control information to the terminal, where the network side network element modifies the PDCP layer measurement control information, and sends the modified PDCP layer measurement control information to the terminal; or, the network side The network element carries an identifier indicating that the terminal terminates the measurement target measurement quantity in the PDCP layer measurement control information.
  • the measurement result information includes at least one of the following: a PCDP measurement result, a wireless signal quality, a service QoS parameter information corresponding to the measured PDCP, a measured time information, a location information of the terminal, a mobility state of the terminal, and a measurement by the terminal. The state of the process at the time.
  • the network side network element optimizes the QoS of the network according to the PDCP measurement result, and the network side network element optimizes the network configuration parameter and/or the radio resource management algorithm according to the PDCP measurement result, where the network configuration parameter includes the PDCP. Packet discard time.
  • a network side network element is also provided.
  • the network side network element includes: a sending module, configured to send a packet data convergence protocol layer PDCP layer measurement control information to the terminal; and a receiving module configured to receive, by the receiving terminal, a PDCP data packet according to the PDCP layer measurement control information
  • the measurement result information reported after the measurement; and the quality of service QoS optimization module are set to optimize the QoS of the network according to the measurement result information.
  • the network side network element is an evolved base station e B.
  • the network side network element is a radio network controller RNC.
  • an optimization system of quality of service is also provided.
  • the QoS optimization system includes a terminal and the network side network element, wherein the terminal includes: a measurement module, configured to measure a PDCP data packet according to PDCP layer measurement control information from the network side network element; And the reporting module is configured to report the measurement result information to the network side network element after the measurement module performs the measurement.
  • the QoS optimization method is adopted by the network side network element according to the measurement data of the terminal PDCP layer, and the QoS of the user cannot be satisfied due to the inappropriate matching of the QoS parameters and the algorithm and the service requirement configured by the network side in the related art.
  • the problem of demand increases the QoS quality of the system and improves the user experience.
  • FIG. 1 is a flowchart of a method for optimizing quality of service according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a network side network element according to an embodiment of the present invention
  • FIG. 3 is a service according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of periodically reporting PDCP measurement results according to the first embodiment of the present invention
  • FIG. 5 is a schematic flowchart of event reporting PDCP measurement results according to Embodiment 2 of the present invention; A schematic flowchart of event-triggered measurement and event-triggered measurement result reporting according to Embodiment 3 of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. According to an embodiment of the present invention, a method for optimizing quality of service is provided. 1 is a flowchart of a method for optimizing quality of service according to an embodiment of the present invention. As shown in FIG.
  • Step S102 A network element of a network side sends PDCP layer measurement control information to a terminal;
  • Step S104 The network side network element receives the measurement result information reported by the terminal after measuring the data packet of the PDCP layer according to the PDCP layer measurement control information, and optimizes the QoS of the network according to the measurement result information.
  • the network side network element is used to deliver the PDCP layer measurement control information to the terminal, and the QoS optimization method is performed according to the measurement data of the PDCP layer reported by the terminal, and the QoS parameters and algorithms configured by the network side in the related art are solved.
  • the network side network element sends a PDCP layer measurement control command, and after the terminal performs PDCP measurement, the measurement result is reported, and the network side network element optimizes the network QoS according to the reported measurement result.
  • the network side network element can send the PDCP layer measurement control information to the terminal by using the first dedicated message of the control plane; the terminal can report the measurement result information by using the second dedicated message of the control plane.
  • the first dedicated message may be a RRC Connection Reconfiguration (RRCConnectionReconfiguration) message
  • the second dedicated message may be a Measurement Report (MeasureReport) message.
  • the network side network element may send the PDCP layer measurement control information to the terminal by using a radio resource control (Radio Resource Control, RRC for short) signaling; the terminal may also report the measurement to the network side network element by means of RRC signaling. Result information.
  • the terminal may determine the measurement mechanism according to the PDCP layer measurement control information, where the measurement mechanism includes one of the following: periodically reporting the measurement result information, reporting the event-triggered measurement result information, and performing the DPCP layer measurement by the terminal.
  • the reporting of the measurement result information is triggered by an event; the terminal measures the data packet of the PDCP layer according to the determined measurement mechanism, and reports the measurement result information.
  • the mechanism for measuring the PDCP layer by the terminal may be performed by periodically reporting the measurement result, reporting the measurement result by the event mode, triggering the measurement by the event, and triggering the measurement result by the event triggering.
  • the terminal if the PDCP layer measurement control information does not indicate that the DPCP layer measurement of the terminal is event-triggered, after receiving the PDCP layer measurement control information, the terminal immediately performs measurement on the PDCP layer data packet.
  • the terminal reporting the measurement result information includes: the terminal sends an indication that the terminal has the measurement result information to be reported to the network side network element, and when the network side network element requests the terminal to report the measurement result information, the terminal reports the measurement to the network side network element.
  • the result information or, when the terminal cannot determine the manner of reporting the measurement result information from the PDCP layer measurement control information, the terminal determines whether to report the measurement result information to the network side network element.
  • the PDCP layer measurement control information may include at least one of the following: a target measurement quantity, a measured target process, measurement report information, and measurement trigger information.
  • the terminal may determine, according to the received measurement reporting information and the measurement trigger information in the PDCP layer measurement control information of the network side network element, the PDCP layer measurement and reporting manner.
  • the target measurement quantity may include a performance indicator of the PDCP packet and/or an identifier of the measurement service, where the performance indicator of the PDCP packet includes at least one of the following: throughput, packet loss rate, packet delay;
  • the uplink service whose identifier includes at least one of the following: an EPS bearer identifier, a radio bearer identifier, and a QoS class identifier.
  • the packet delay may be measured by: first, the terminal records the time when the data packet of the PDCP layer reaches the PDCP layer of the terminal and the network side network element receives The time t2 of the acknowledgment message returned to the terminal after the data packet; then, the terminal subtracts tl from t2 to obtain the packet delay.
  • the PDCP packet delay is measured by: the terminal records the arrival time of the PDCP packet and the evolved base station (Evolved NodeB, e B for short) returns the packet acknowledgement ( The time of Acknowledgment (abbreviated as ACK), and then subtracting the former from the latter, is the PDCP packet delay to be measured.
  • the target process of the measurement may be a process state in which the terminal is located when performing the measurement, including at least one of the following: a handover process, an RRC re-establishment process, and a normal service process.
  • the method is simple to implement and has high operability.
  • the measurement report information may be a period in which the terminal reports the measurement result information or an event that triggers the terminal to report the measurement result information, where the event includes at least one of the following: a predetermined time elapses after the measurement is started, and the storage space of the measurement result is greater than a predetermined threshold.
  • the power of the terminal is lower than a predetermined threshold, and the measurement service ends.
  • the storage space of the measurement result here refers to the file size occupied by the measurement result after the terminal performs PDCP measurement on the terminal side.
  • the storage space is usually smaller than a certain limit. That is, when the limit is exceeded, the terminal will trigger the terminal to report the measurement result information to the network side network element.
  • the measurement report information is in a different manner, and may be a measurement report period or an event reported by the measurement result, and the terminal may determine, according to the measurement report information, a report manner of the measurement result information that should be used. For example, if the measurement report includes a period, it indicates that the measurement result information is periodically reported. If the event report includes an event, after the event is satisfied, the measurement result information is reported to the network side network element. .
  • the measurement trigger information may be a trigger condition for the terminal to perform PDCP measurement, where the trigger condition includes at least one of the following: the wireless signal quality is lower than a predetermined threshold, the terminal is in a predetermined area, and the user's satisfaction is lower than a predetermined requirement.
  • the triggering condition generally refers to the condition that the terminal starts the PDCP measurement (ie, the triggering event), that is, after receiving the PDCP layer measurement control information of the network side network element, the terminal does not immediately start measuring, but After the trigger condition is satisfied, the measurement of the PDCP layer is started.
  • the measurement trigger information may be one or more of a time when the triggering terminal performs measurement, a wireless signal quality is lower than a certain threshold, a certain location area is reached, the user's satisfaction is not up to a predetermined requirement, and the like.
  • the network side network element may modify the PDCP layer measurement control information, and send the modified PDCP layer measurement control information to the terminal; or the network side network element is in the PDCP layer measurement control information.
  • Carrying an indicator indicating that the terminal terminates the measurement target measurement For example, the network side network element may reconfigure or terminate the PDCP layer measurement of the terminal, that is, modify the content of the PDCP layer measurement control information, or instruct the terminal to terminate the measurement of the PDCP layer in the PDCP layer measurement control information.
  • the measurement result information may include at least one of the following: a PCDP measurement result, a wireless signal quality, service QoS parameter information corresponding to the measured PDCP, measured time information, location information of the terminal, mobility status of the terminal, and terminal operation.
  • the mobility state of the terminal may be the moving speed level of the terminal, for example, low speed, medium speed, high speed.
  • the network side network element optimizes the QoS of the network according to the PDCP measurement result, and the network side network element optimizes the network configuration parameter and/or the radio resource management algorithm according to the PDCP measurement result, where
  • the configuration parameters of the network include the discarding time of PDCP packets.
  • the network side network element 20 includes: a sending module 22, configured to send PDCP layer measurement control information to the terminal; 24, configured to receive, by the receiving terminal, the measurement result information reported by the PDCP layer measurement packet according to the PDCP layer measurement control information; and the QoS optimization module 26 is coupled to the receiving module 24, and is configured to optimize the QoS of the network according to the measurement result information. .
  • the network side network element 20 uses the PDCP layer measurement control information to the terminal, and performs QoS optimization according to the measurement data of the PDCP layer reported by the terminal, and solves the QoS parameters, algorithms, and services configured by the network side in the related art.
  • the network side network element 20 is an eNB; in a universal mobile communication system (Universal
  • FIG. 3 is a structural block diagram of a system for optimizing quality of service according to an embodiment of the present invention.
  • the system includes a terminal 32 and a network side network element 20, wherein the terminal 32 includes: a measurement module 322, configured to The PDCP layer measurement control information of the network side network element 20 measures the data packet of the PDCP; and the reporting module 324 is coupled to the measurement module 322, and is configured to report the measurement result information to the network side network element 20 after the measurement module 322 performs the measurement.
  • the terminal 32 includes: a measurement module 322, configured to The PDCP layer measurement control information of the network side network element 20 measures the data packet of the PDCP; and the reporting module 324 is coupled to the measurement module 322, and is configured to report the measurement result information to the network side network element 20 after the measurement module 322 performs the measurement.
  • Embodiment 1 This embodiment provides a QoS optimization method by taking the terminal side periodic measurement report as an example. It is assumed that the measured services in this embodiment are all uplink services, and the terminal is in a link state in the network element 1 (for example, an eNB or an RNC), and the cell of the network element 1 provides a service for the terminal.
  • FIG. 4 is a schematic flowchart of periodically reporting PDCP measurement results according to the first embodiment of the present invention. As shown in FIG. 4, the process includes the following steps: Step S402: Based on QoS optimization or other requirements, the network element 1 delivers the PDCP layer. Measure control information to the terminal.
  • the measurement control information may include one or more of the measured target measurement quantity, the measured target process, the measurement report information, and the like.
  • the target measurement quantity may include a specific PDCP protocol layer measurement quantity (for example, one or more of a PDCP packet throughput, a packet loss rate, a packet delay, and the like), and may also include a service to be measured.
  • the identifier may be an EPS bearer id or an RB id or a QCI, or may not carry The service identifier is measured by default for all the services of the terminal.
  • the target process of the measurement may be the process status of the terminal that performs the measurement, for example, the terminal is in the handover process, the RRC re-establishment process, the normal service process, etc.;
  • the reporting method of the measurement result of the terminal for example, if it is periodically reported, the measurement report information includes a period of reporting the measurement result.
  • the network element 1 can send measurement control information to the terminal through the control plane dedicated message in the manner of RRC signaling. For example, use a radio resource control connection reconfiguration (RRCConnectionReconfiguration) message or a new independent message.
  • Step S404 the terminal immediately measures the data packet of the PDCP layer according to the received measurement control information.
  • the target measurement amount is the throughput of the PDCP packet, the packet loss rate, the packet delay, and the like.
  • the terminal can measure the target measurement according to the measurement requirements.
  • the calculation method of the throughput may be: The number of packets sent by the PDCP layer of the terminal in a certain period; the calculation method of the packet loss rate may be: The number of packets sent by the terminal that does not receive the acknowledgement ACK (ACKNOWLEDGE) and the total number of packets sent
  • the ratio of the number of packets may be: The terminal records the time when the uplink PDCP packet arrives, and the time when the peer network side network element (for example, e B) receives the PDCP packet and returns an acknowledgement ACK.
  • the time of the PDCP layer Preferably, the terminal may record the measurement result of each PDCP packet, or perform arithmetic average in one measurement period, that is, calculate the average throughput, the average packet loss rate, and the average delay time of all PDCP packets in one measurement period.
  • the measurement period can be included in the measurement control information.
  • the terminal simultaneously performs measurement of the radio quality of the serving cell, and also performs measurement of the geographic location information of the terminal.
  • Step S406 The terminal periodically reports the measurement result of the PDCP layer to the network side network element.
  • the user equipment User Equipment, UE for short
  • a measurement report MeasurementReport
  • the measurement result may include one or more of wireless signal quality, QoS parameter information, time information, location information, mobility status, a process in which the terminal is located, and the like.
  • the radio signal quality may be the pilot signal quality of the cell or the channel quality indicator (CQI); the QoS parameter information may be the measured service QoS parameter of the PDCP (for example, the QoS parameter includes the QCI and the rate)
  • the information may also include an Address Resolution Protocol (ARP); the time information may be an absolute time or a relative time of the measurement; the location information may include a geographical location where the terminal is located; and the mobility state may be a mobile terminal.
  • Speed class for example, low speed, medium speed, high speed
  • the process in which the terminal is located may refer to a handover process, an RRC re-establishment process, a normal business process, and the like.
  • the network element 1 can reconfigure or terminate the measurement of the PDCP.
  • the network element 1 may modify the target measurement amount, the measured target process, the measurement report information, or stop some or all of the measurement amount.
  • the network element 1 sends measurement reconfiguration information to the terminal, and the terminal performs measurement or terminates measurement according to the measurement reconfiguration information.
  • the foregoing method can perform the measurement of the PDCP layer according to the measurement requirements delivered by the network element of the network, and report the measurement result to the network element of the network.
  • the network element can perform the network according to the measurement result of the PDCP layer reported by the terminal.
  • the network optimization may include optimization of network configuration parameters and optimization of a radio resource management algorithm, for example, a discard time parameter DiscardTimer of the PDCP data packet may be optimized.
  • Embodiment 2 provides an QoS optimization scheme by taking an event-triggered measurement report as an example. It is assumed that the measured services in this embodiment are all uplink services, and the terminal is in the link state in the network element 1, and the cell in the network element 1 provides services for the terminal.
  • 5 is a schematic flowchart of an event reporting PDCP measurement result according to Embodiment 2 of the present invention. As shown in FIG. 5, the process includes the following steps: Step S502: Based on QoS optimization or other requirements, the network element 1 delivers PDCP layer measurement. Control information to the terminal.
  • the measurement control information includes a measured target measurement quantity, and may further include one or more of a measurement target process, measurement report information, and the like.
  • the target measurement quantity includes a specific measurement quantity of the PDCP protocol layer, and refers to one or more of the indicators of the throughput, the packet loss rate, and the packet delay of the PDCP packet, and may also include an identifier of the service to be measured, where the identifier may be If the EPS bearer id or RB id or QCI, or does not carry a service identifier, the default is to measure all services of the terminal.
  • the target process of the measurement refers to the process state of the terminal that performs the measurement, for example, the terminal is in the handover process, the RRC re-establishment process, the normal service process, and the like.
  • the measurement reporting information refers to the reporting condition of the measurement result of the terminal.
  • the measurement reporting information may be that the throughput of the PDCP packet in a certain period is higher than a certain threshold (for example, 5 kbits), and the packet loss rate is high.
  • a certain threshold for example, 5 kbits
  • the packet loss rate is high.
  • One of the measurement reporting events at a certain threshold for example, the threshold is 1%
  • the delay is greater than a certain threshold (for example, the threshold is 5ms)
  • the wireless signal quality is below a certain threshold (for example, the threshold is -85dbm). If the item or multiple items are satisfied, the reporting of the terminal PDCP measurement result is triggered.
  • the network element 1 can send measurement control information to the terminal through the control plane dedicated message by means of RRC signaling, for example, using a radio resource control connection reconfiguration (RRCConnectionReconfiguration) message or a new independent message.
  • Step S504 the terminal immediately measures the data packet of the PDCP layer according to the received measurement control information.
  • the measurement method of the packet delay is: the terminal records the time when the uplink PDCP packet arrives, and the time when the peer network element 1 (for example, e B) receives the PDCP packet and returns an acknowledgement ACK, and the time difference between the two moments is the PDCP packet.
  • the delay time that is, the time when the eNB returns the ACK of the packet - the arrival time of the terminal PDCP packet, and the arrival time of the PDCP packet of the terminal refers to the time when the data packet of the application layer reaches the PDCP layer of the terminal; the terminal can follow the measurement requirement.
  • the terminal may record the measurement result of each PDCP packet, or perform arithmetic average in one measurement period, that is, calculate an average delay time, an average throughput, and an average packet loss rate of all PDCP packets in one measurement period.
  • the measurement period can be included in the measurement control information.
  • the terminal simultaneously performs measurement of the radio quality of the serving cell, and can also measure the geographic location information of the terminal. In step S506, the condition reported by the measurement result is satisfied.
  • Step S508 If the condition for reporting the measurement result is met, the terminal reports the measurement result of the measured PDCP layer to the network side, and the network side performs network optimization according to the PDCP measurement result reported by the terminal to improve the QoS of the user.
  • a certain threshold for example, 5 kbits
  • the packet loss rate is already above a certain threshold (for example, the threshold is 1%)
  • the delay is already greater than a certain threshold (for example, , the threshold is 5ms)
  • the wireless signal quality has been below a certain threshold (for example, the threshold is -85dbm).
  • the UE may report the PDCP layer measurement result to the network element 1 by using RRC signaling.
  • a measurement report (MeasurementReport) message or a new independent message may be used.
  • the measurement result may further include one or more of wireless signal quality, QoS parameter information, time information, location information, mobility status, a process in which the terminal is located, and the like.
  • the radio signal quality may be the pilot signal quality of the cell or the channel quality indicator CQI;
  • the QoS parameter information refers to the measured service QoS parameter corresponding to the PDCP, the QoS parameter includes the QCI and the rate information, and may also include the ARP; It is the absolute time or relative time of the measurement;
  • the location information includes the geographical location of the terminal;
  • the mobility state may be the moving speed level of the terminal, for example, low speed, medium speed, high speed; the process in which the terminal is located may refer to the handover process, RRC heavy Establish processes, normal business processes, etc.
  • the network element 1 can reconfigure or terminate the measurement of the PDCP.
  • the network element 1 sends measurement reconfiguration information to the terminal, and the terminal performs measurement or terminates measurement according to the measurement reconfiguration information.
  • the network optimization may include optimization of network configuration parameters and optimization of a radio resource management algorithm, for example, a discard time parameter DiscardTimer of the PDCP data packet may be optimized.
  • Embodiment 3 This embodiment provides a QoS optimization scheme by taking the event triggering of the PDCP layer and reporting the measurement results as an example.
  • 6 is a schematic flowchart of event triggering measurement and event triggering measurement result reporting according to Embodiment 3 of the present invention. As shown in FIG.
  • Step S602 Based on the QoS optimization or other requirements, the network element 1 sends the PDCP layer measurement control information to the terminal.
  • the measurement control information includes a measured target measurement quantity, and may further include one or more of a measurement target process, measurement trigger information, measurement report information, and the like.
  • the target measurement quantity may include one or more of a specific PDCP protocol layer measurement quantity, for example, a PDCP packet throughput, a packet loss rate, a packet delay, and the like, and the target measurement quantity may further include an identifier of the service to be measured.
  • the identifier may be an EPS bearer id or an RB id or a QCI, or may not carry a service identifier, and the default is to measure all services of the terminal.
  • the target process of the measurement refers to the process state of the terminal that performs the measurement, for example, the terminal is in the handover process, the RRC re-establishment process, the normal service process, and the like.
  • the measurement trigger information refers to the trigger condition of the PDCP measurement (which can be recorded as event 1).
  • the wireless signal quality may be below a certain threshold (for example, the threshold is -75dbm), and the terminal reaches a certain location area (for example, TA1). ), the user's satisfaction does not meet the requirements and so on.
  • the measurement report information refers to the condition for triggering the terminal to report the measurement result (can be recorded as event 2). For example, it may be a certain time interval after the measurement is started (for example, 100s), and the storage space of the measurement result is larger than a certain threshold (for example, 50). %), the power of the terminal is lower than a certain threshold (ie, threshold, for example, 1%), the measured business end, etc. one or more of them.
  • the network element 1 can send measurement control information to the terminal through the control plane dedicated message by means of RRC signaling, for example, using a radio resource control connection reconfiguration (RRCConnectionReconfiguration) message or a new independent message.
  • RRCConnectionReconfiguration radio resource control connection reconfiguration
  • Step S604 The terminal, according to the received measurement control information, measures the data packet of the PDCP layer if the event 1 triggered by the PDCP measurement is satisfied.
  • the method for measuring the packet delay may be: the terminal records the time when the uplink PDCP packet arrives, and the time when the peer network element 1 receives the PDCP packet and returns an acknowledgement ACK.
  • the time difference is the delay time of the PDCP packet, that is, (the time when the network element 1 returns the ACK of the packet - the arrival time of the terminal PDCP packet), and the arrival time of the terminal PDCP packet refers to the time when the data packet of the application layer reaches the PDCP layer of the terminal;
  • the terminal can measure the throughput and packet loss rate of the PDCP packet according to the measured requirements. For example, the calculation of throughput: (the number of packets transmitted in a certain period of the PDCP layer of the terminal); calculation of the packet loss rate: (the ratio of the number of packets sent by the terminal that did not receive the ACK to the total number of packets transmitted).
  • the terminal may record the measurement result of each PDCP packet, or perform arithmetic average in one measurement period, that is, calculate an average delay time, an average throughput, and an average packet loss rate of all PDCP packets in one measurement period.
  • the measurement period can be included in the measurement control information.
  • the terminal simultaneously performs measurement of the radio quality of the serving cell, and also performs measurement of the geographic location information of the terminal.
  • the event 2 reported by the measurement result occurs.
  • the terminal may determine, according to the indication of the application layer, whether the service meets the user's requirement, that is, the user satisfaction is determined through the application layer.
  • step S612 if the event 2 reported by the measurement result is satisfied, the terminal reports the measurement result of the PDCP layer to the network side.
  • the UE may report the PDCP layer measurement result to the network element 1 by using RRC signaling. For example, a measurement report (MeasurementReport) message or a new independent message may be used.
  • the measurement result may further include one or more of wireless signal quality, QoS parameter information, time information, location information, mobility status, a process in which the terminal is located, and the like.
  • the radio signal quality may be the pilot signal quality of the cell or the channel quality indicator CQI;
  • the QoS parameter information refers to the measured service QoS parameter corresponding to the PDCP, for example, the QoS parameter includes the QCI and the rate information, and may also include the ARP;
  • the information may be the absolute time or relative time of the measurement;
  • the location information includes the geographical location of the terminal;
  • the mobility state may be the moving speed level of the terminal, for example, low speed, medium speed, high speed; the process in which the terminal is located may refer to the switching process, RRC re-establishment process, normal business process, etc.
  • the terminal may also decide when to report the measurement result.
  • the process may further include step S608 and step S610, BP, the terminal may send an indication that the measurement result needs to be reported to the network element 1 before reporting the PDCP measurement result, and the network element 1 sends the measurement result report request to the terminal. After the message, the terminal reports the PDCP measurement result to the network element 1.
  • the terminal may also decide when to report the existence of the reportable measurement result.
  • the network element 1 can reconfigure or terminate the measurement of the PDCP.
  • the network element 1 may modify the target measurement amount, the measured target process, the measurement report information, or stop some or all of the measurement amount.
  • the network element 1 sends measurement reconfiguration information to the terminal, and the terminal performs measurement or terminates measurement according to the measurement reconfiguration information.
  • the network side may perform network optimization according to the PDCP measurement result reported by the terminal, and improve user QoS.
  • the network optimization may include optimization of network configuration parameters and optimization of a radio resource management algorithm, for example, a discard time parameter DiscardTimer of the PDCP data packet may be optimized.
  • the measured services in the foregoing embodiments all refer to uplink services.
  • Network element 1 in the LTE system, refers to e B; in the UMTS system, it refers to the RNC.
  • the embodiment of the present invention provides a scheme for measuring user plane data at the PDCP layer, and the network side may perform QoS according to the measurement result reported by the terminal. Optimization improves the QoS quality of the system. At the same time, it also makes full use of network resources to provide users with a better user experience. INDUSTRIAL APPLICABILITY
  • the network side of the present invention can optimize the QoS according to the measurement result reported by the terminal, improve the QoS quality of the system, and fully utilize the network resources to meet the requirements of the user QoS.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

本发明公开了一种服务质量的优化方法及系统、网络侧网元,该服务质量的优化方法包括以下步骤:网络侧网元向终端下发PDCP层测量控制信息;网络侧网元接收到终端根据PDCP层测量控制信息对PDCP层的数据包进行测量后上报的测量结果信息,并根据该测量结果信息对网络的QoS进行优化。通过本发明增加了系统的QoS质量,提高了用户体验。

Description

服务质量的优化方法及系统、 网络侧网元 技术领域 本发明涉及通信领域, 尤其涉及一种服务质量的优化方法及系统、 网络侧网元。 背景技术 服务质量(Quality of Service, 简称为 QoS)是网络的一种安全机制, 是用来解决 网络延迟和阻塞等问题的一种技术。 对于网络业务, 服务质量包括传输的带宽、 传送 的时延、 数据的丢包率等。 在网络中可以通过保证传输的带宽、 降低传送的时延、 降 低数据的丢包率以及时延抖动等措施来提高服务质量。 网络资源总是有限的, 只要存 在抢夺网络资源的情况, 就会出现服务质量的要求。服务质量是相对网络业务而言的, 在保证某类业务的服务质量的同时, 可能就是在损害其它业务的服务质量。 例如, 在 网络总带宽固定的情况下, 如果某类业务占用的带宽越多, 那么其他业务能使用的带 宽就越少, 这样占用多带宽的业务就可能会影响其他业务的使用。 因此, 网络管理者 需要根据各种业务的特点来对网络资源进行合理的规划和分配, 从而使网络资源得到 高效利用。 在演进的分组系统(Evolved Packet System, 简称为 EPS) 中, QoS控制的基本粒 度是承载(Bearer), BP , 相同承载上的所有数据流量将获得相同的 QoS保障, 不同类 型的承载提供不同的 QoS 保障。 承载级 QoS 参数包括 QoS 类标识符 (QoS Class Identifier, 简称为 QCI)、 分配与保持优先级(Allocation and Retention Priority, 简称为 ARP)、保证速率(Guaranteed Bit Rate,简称为 GBR)、最大比特速率(Maximum Bit Rate, 简称为 MBR)和 /或聚合最大比特速率( Aggregate Maximum Bit Rate,简称为 AMBR)。 在无线接入网(Radio Access Network,简称为 RAN)侧,一个无线承载(Radio Bearer, 简称为 RB) 对应一个 EPS承载。 在用户面,每个 RB对应一个分组数据汇聚协议(Packet Data Convergence Protocol, 简称为 PDCP)层实体、 一个无线链路控制 (Radio Link Control, 简称为 RLC) 实体, 并且由媒体访问控制 (Medium Access Control, 简称为 MAC)层进行调度, 用户面的 不同实体共同来保证 RB的数据传输, 从而保证用户的 QoS需求。 其中, PDCP子层 提供的具体服务可以包括: 进行头压缩和解压缩; 用户平面数据和控制平面数据的加 密 /解密; 提供 PDCP序列号, 供无线承载使用等。 RLC子层支持的功能包括: 传送 RLC协议数据单元 (Protocol Data Unit, 简称为 PDU); 分段、 组合和重组 RLC服务 数据单元(Service Data Unit, 简称为 SDU)等。 MAC子层提供的一些主要功能包括: 逻辑信道与传输信道之间的映射; 经过混合自动重传请求 (Hybrid Automatic Repeat Request, 简称为 HARQ); 在用户设备 (User Equipment, 简称为 UE) 的逻辑信道之 间进行优先级处理; 在 UE之间借助动态调度进行优先级处理; 传输格式选择; 逻辑 信道优先级管理。此外,无线侧的接纳控制、移动性、调度算法等无线资源管理(Radio Resource Management, 简称为 RRM) 策略也用来保证用户的 QoS需求。 然而, 在相关技术中, 由于网络侧配置的 QoS参数和算法与业务的需求匹配不合 适, 经常会出现无法满足用户的 QoS需求的问题, 针对该问题, 目前尚未提出有效的 解决方案。 发明内容 本发明的主要目的在于提供一种服务质量的优化方案, 以至少解决上述相关技术 中由于网络侧配置的 QoS参数和算法与业务的需求匹配不合适而造成无法满足用户的 QoS需求的问题。 为了实现上述目的, 根据本发明的一个方面, 提供了一种服务质量的优化方法。 根据本发明的服务质量 QoS的优化方法, 包括以下步骤: 网络侧网元向终端下发
PDCP层测量控制信息; 网络侧网元接收到终端根据 PDCP层测量控制信息对 PDCP 层的数据包进行测量后上报的测量结果信息, 并根据该测量结果信息对网络的 QoS进 行优化。 优选地,网络侧网元通过控制面第一专用消息向终端下发 PDCP层测量控制信息; 终端通过控制面第二专用消息上报测量结果信息。 优选地, 网络侧网元接收到终端上报的测量结果信息之前, 该方法还包括: 终端 根据 PDCP层测量控制信息确定测量机制, 其中, 测量机制包括以下之一: 周期性上 报测量结果信息、 事件触发测量结果信息的上报、 终端进行 DPCP层测量及测量结果 信息的上报均为事件触发; 终端根据确定的测量机制,对 PDCP层的数据包进行测量, 以及对测量结果信息进行上报。 优选地, 终端对测量结果信息进行上报包括: 终端向网络侧网元发送终端有测量 结果信息需要上报的指示, 在网络侧网元请求终端上报测量结果信息时, 终端向网络 侧网元上报测量结果信息; 或者, 在终端从 PDCP层测量控制信息中无法确定上报测 量结果信息的方式的情况下, 终端自行决定何时向网络侧网元上报测量结果信息。 优选地, PDCP 层测量控制信息包括至少以下之一: 目标测量量、 测量的目标过 程、 测量上报信息、 测量触发信息。 优选地, 目标测量量包括 PDCP包的性能指标和 /或测量业务的标识,其中, PDCP 包的性能指标包括至少以下之一: 吞吐量、 丢包率、 包延迟; 测量业务为上行业务, 其标识包括至少以下之一: 演进的分组系统 EPS承载标识、 无线承载标识、 QoS类标 识符。 优选地, 网络侧网元接收到终端上报的测量结果信息之前, 终端对 PDCP层的数 据包进行测量时,包延迟的测量方式为:终端记录 PDCP层的数据包到达终端的 PDCP 层的时间 tl和网络侧网元接收到该数据包后向终端返回的确认消息的时间 t2; 终端通 过 t2减去 tl, 得出包延迟。 优选地,测量的目标过程为进行测量时终端所处的过程状态,包括至少以下之一: 切换过程、 无线资源控制 RRC重建立过程、 正常业务过程。 优选地, 测量上报信息为终端上报测量结果信息的周期或触发终端上报测量结果 信息的事件, 其中, 该事件包括至少以下之一: 测量启动后经过预定时间、 测量结果 的存储空间大于预定门限、 终端的电量低于预定阈值、 测量业务结束。 优选地, 测量触发信息为终端进行 PDCP测量的触发条件, 其中, 触发条件包括 至少以下之一: 无线信号质量低于预定门限、 终端处于预定区域、 用户的满意度低于 预定要求。 优选地,网络侧网元向终端下发 PDCP层测量控制信息包括:网络侧网元对 PDCP 层测量控制信息进行修改, 并将修改后的 PDCP层测量控制信息下发给终端; 或者, 网络侧网元在 PDCP层测量控制信息中携带指示终端终止测量目标测量量的标识。 优选地, 测量结果信息包括至少以下之一: PCDP 测量结果、 无线信号质量、 与 测量的 PDCP对应的业务 QoS参数信息、 测量的时间信息、 终端的位置信息、 终端的 移动性状态、 终端进行测量时所处的过程状态。 优选地, 网络侧网元根据 PDCP测量结果对网络的 QoS进行优化包括: 网络侧网 元根据 PDCP测量结果对网络的配置参数和 /或无线资源管理算法进行优化, 其中, 网 络的配置参数包括 PDCP数据包的丢弃时间。 为了实现上述目的, 根据本发明的另一方面, 还提供了一种网络侧网元。 根据本发明的网络侧网元, 包括: 下发模块, 设置为向终端下发分组数据汇聚协 议层 PDCP层测量控制信息; 接收模块, 设置为接收终端根据 PDCP层测量控制信息 对 PDCP的数据包进行测量后上报的测量结果信息; 以及服务质量 QoS优化模块, 设 置为根据测量结果信息对网络的 QoS进行优化。 优选地, 在长期演进 LTE系统中, 上述网络侧网元为演进型基站 e B; 在通用移 动通信系统 UMTS中, 上述网络侧网元为无线网络控制器 RNC。 为了实现上述目的,根据本发明的再一方面,还提供了一种服务质量的优化系统。 根据本发明的服务质量 QoS的优化系统, 包括终端和上述网络侧网元, 其中, 终 端包括: 测量模块, 设置为根据来自网络侧网元的 PDCP层测量控制信息对 PDCP的 数据包进行测量; 以及上报模块, 设置为在测量模块进行测量后向网络侧网元上报测 量结果信息。 通过本发明,采用网络侧网元根据终端 PDCP层的测量数据进行 QoS优化的方式, 解决了相关技术中由于网络侧配置的 QoS参数和算法与业务的需求匹配不合适而造成 无法满足用户的 QoS需求的问题, 增加了系统的 QoS质量, 提高了用户体验。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据本发明实施例的服务质量的优化方法的流程图; 图 2是根据本发明实施例的网络侧网元的结构框图; 图 3是根据本发明实施例的服务质量的优化系统的结构框图; 图 4是根据本发明实施例一的周期性上报 PDCP测量结果的流程示意图; 图 5是根据本发明实施例二的事件上报 PDCP测量结果的流程示意图; 图 6是根据本发明实施例三的事件触发测量和事件触发测量结果上报的流程示意 图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 根据本发明实施例, 提供了一种服务质量的优化方法。 图 1是根据本发明实施例 的服务质量的优化方法的流程图, 如图 1所示, 该方法包括以下步骤: 步骤 S102, 网络侧网元向终端下发 PDCP层测量控制信息; 步骤 S104, 网络侧网元接收到终端根据 PDCP层测量控制信息对 PDCP层的数据 包进行测量后上报的测量结果信息, 并根据测量结果信息对网络的 QoS进行优化。 通过上述步骤, 采用网络侧网元向终端下发 PDCP层测量控制信息, 并根据终端 上报的 PDCP层的测量数据进行 QoS优化的方式,解决了相关技术中由于网络侧配置 的 QoS参数和算法与业务的需求匹配不合适而造成无法满足用户的 QoS需求的问题, 增加了系统的 QoS质量, 提高了用户体验。 例如, 网络侧网元下发 PDCP层测量控制命令, 终端进行 PDCP测量后, 上报测 量结果, 网络侧网元根据上报的测量结果对网络的 QoS进行优化。 优选地, 网络侧网元可以通过控制面第一专用消息向终端下发 PDCP层测量控制 信息; 终端可以通过控制面第二专用消息上报测量结果信息。 例如, 在实施过程中, 第一专用消息可以为无线资源控制连接重配置 ( RRCConnectionReconfiguration ) 消息, 第二专用消息可以为测量报告 ( MeasurementReport ) 消息。 例如, 网络侧网元可以通过无线资源控制(Radio Resource Control, 简称为 RRC) 信令的方式向终端下发 PDCP层测量控制信息;终端也可以通过 RRC信令的方式向网 络侧网元上报测量结果信息。 优选地, 在步骤 S104之前, 终端可以根据 PDCP层测量控制信息确定测量机制, 其中, 测量机制包括以下之一: 周期性上报测量结果信息、 事件触发测量结果信息的 上报、 终端进行 DPCP层测量及测量结果信息的上报均为事件触发; 终端根据确定的 测量机制, 对 PDCP层的数据包进行测量, 以及对测量结果信息进行上报。 例如, 终 端测量 PDCP层的机制可以采用周期性上报测量结果、 事件方式上报测量结果、 事件 触发测量和事件触发上报测量结果等方式。 在实施过程中, 若 PDCP层测量控制信息中没有明确终端的 DPCP层测量是事件 触发的, 则终端接收到该 PDCP层测量控制信息后, 就立即进行对 PDCP层的数据包 进行测量。 优选地, 终端对测量结果信息进行上报包括: 终端向网络侧网元发送终端有测量 结果信息需要上报的指示, 在网络侧网元请求终端上报测量结果信息时, 终端向网络 侧网元上报测量结果信息; 或者, 在终端从 PDCP层测量控制信息中无法确定上报测 量结果信息的方式的情况下, 终端自行决定何时向网络侧网元上报测量结果信息。 优选地, 在步骤 S102中, PDCP层测量控制信息可以包括至少以下之一: 目标测 量量、 测量的目标过程、 测量上报信息、 测量触发信息。 例如, 终端可以根据接收到的来自网络侧网元的 PDCP层测量控制信息中的测量 上报信息和测量触发信息, 确定 PDCP层测量和上报的方式。 优选地, 目标测量量可以包括 PDCP包的性能指标和 /或测量业务的标识, 其中, PDCP 包的性能指标包括至少以下之一: 吞吐量、 丢包率、 包延迟; 这里的测量业务 是指上行业务, 其标识包括至少以下之一: EPS承载标识、 无线承载标识、 QoS类标 识符。 优选地, 在步骤 S104之前, 终端对 PDCP层的数据包进行测量时, 包延迟的测量 方式可以为: 首先, 终端记录 PDCP层的数据包到达终端的 PDCP层的时间 tl和网络 侧网元接收到该数据包后向终端返回的确认消息的时间 t2;然后,终端通过 t2减去 tl, 可以得出包延迟。 例如, 在长期演进(Long Term Evolution, 简称为 LTE)系统中, PDCP包延迟的 测量方式为: 终端记录 PDCP包的到达时间和演进型基站 (Evolved NodeB, 简称为 e B) 返回该包确认 (Acknowledgment, 简称为 ACK) 的时间, 然后, 用后者减去前 者, 则为要测量的 PDCP包延迟。 优选地, 测量的目标过程可以为进行测量时终端所处的过程状态, 包括至少以下 之一: 切换过程、 RRC重建立过程、 正常业务过程。 该方法实现简单、 可操作性强。 优选地, 测量上报信息可以为终端上报测量结果信息的周期或触发终端上报测量 结果信息的事件, 其中, 该事件包括至少以下之一: 测量启动后经过预定时间、 测量 结果的存储空间大于预定门限、 终端的电量低于预定阈值、 测量业务结束。 这里测量 结果的存储空间是指终端进行 PDCP测量后的测量结果的文件大小在终端侧所占用的 存储空间, 该存储空间通常会小于某个限额, 即, 在大于这个限额时, 将会触发终端 向网络侧网元上报测量结果信息。 在实施过程中, 测量上报信息对应不同的方式, 可以是测量上报的周期或测量结 果上报的事件, 终端可以根据该测量上报信息确定应该采用的测量结果信息的上报方 式。 例如, 如果该测量上报信息中包括的是周期, 则表示周期性上报测量结果信息, 如果该测量上报信息中包括的是事件, 则在该事件满足后, 再向网络侧网元上报测量 结果信息。 优选地, 测量触发信息可以为终端进行 PDCP测量的触发条件, 其中, 该触发条 件包括至少以下之一: 无线信号质量低于预定门限、 终端处于预定区域、 用户的满意 度低于预定要求。 在实施过程中, 该触发条件通常是指终端开始进行 PDCP测量的条 件(即, 触发事件), 即, 终端在接收到网络侧网元的 PDCP层测量控制信息后, 不是 立即开始测量, 而是等该触发条件满足后, 才开始进行 PDCP层的测量。 例如, 测量触发信息可以为触发终端进行测量的时间、 无线信号质量低于某一门 限、 到达某一位置区域、 用户的满意度未达到预定要求等其中的一项或多项。 优选地, 在步骤 S102中, 网络侧网元可以对 PDCP层测量控制信息进行修改, 并 将修改后的 PDCP层测量控制信息下发给终端; 或者, 网络侧网元在 PDCP层测量控 制信息中携带指示终端终止测量目标测量量的标识。 例如, 网络侧网元可以对终端的 PDCP层测量进行重配置或终止, 即, 将 PDCP 层测量控制信息的内容进行修改,或在 PDCP层测量控制信息中指示终端终止对 PDCP 层的测量。 优选地, 测量结果信息可以包括至少以下之一: PCDP测量结果、 无线信号质量、 与测量的 PDCP对应的业务 QoS参数信息、 测量的时间信息、 终端的位置信息、 终端 的移动性状态、 终端进行测量时所处的过程状态。 该方法可以提高测量结果信息的有 效性。 在实施过程中, 终端的移动性状态可以为终端的移动速度等级, 例如, 低速、 中速、 高速。 优选地, 在步骤 S104中, 网络侧网元根据 PDCP测量结果对网络的 QoS进行优 化可以包括: 网络侧网元根据 PDCP测量结果对网络的配置参数和 /或无线资源管理算 法进行优化, 其中, 网络的配置参数包括 PDCP数据包的丢弃时间。 该方法可以增加 系统的灵活性。 对应于上述方法, 本发明实施例还提供了一种网络侧网元。 图 2是根据本发明实 施例的网络侧网元的结构框图, 如图 2所示, 该网络侧网元 20包括: 下发模块 22, 设置为向终端下发 PDCP层测量控制信息; 接收模块 24, 设置为接收终端根据 PDCP 层测量控制信息对 PDCP的数据包进行测量后上报的测量结果信息; 以及 QoS优化模 块 26, 耦合至接收模块 24, 设置为根据测量结果信息对网络的 QoS进行优化。 通过网络侧网元 20, 采用向终端下发 PDCP层测量控制信息, 并根据终端上报的 PDCP层的测量数据进行 QoS优化的方式, 解决了相关技术中由于网络侧配置的 QoS 参数和算法与业务的需求匹配不合适而造成无法满足用户的 QoS需求的问题,增加了 系统的 QoS质量, 提高了用户体验。 优选地, 在 LTE系统中, 网络侧网元 20为 eNB; 在通用移动通信系统(Universal
Mobile Telecommunications System, 简称为 UMTS) 中, 网络侧网元 20为无线网络控 制器 (Radio Network Controller, 简称为 RNC)。 根据本发明实施例, 还提供了一种 QoS的优化系统。 图 3是根据本发明实施例的 服务质量的优化系统的结构框图, 如图 3所示, 该系统包括终端 32和网络侧网元 20, 其中, 终端 32包括: 测量模块 322, 设置为根据来自网络侧网元 20的 PDCP层测量 控制信息对 PDCP的数据包进行测量; 以及上报模块 324, 耦合至测量模块 322, 设置 为在测量模块 322进行测量后向网络侧网元 20上报测量结果信息。 下面结合优选实施例和附图对上述实施例的实现过程进行详细说明。 实施例一 本实施例以终端侧周期性测量上报为例, 提供了一种 QoS的优化方法。 假设本实 施例中的测量的业务都是上行的业务, 终端在网元 1 (例如, eNB或 RNC) 中处于链 接态, 网元 1的小区为终端提供业务。 图 4是根据本发明实施例一的周期性上报 PDCP测量结果的流程示意图, 如图 4 所示, 该流程包括以下步骤: 步骤 S402,基于 QoS的优化或其他需求, 网元 1下发 PDCP层测量控制信息到终 端。 其中, 测量控制信息可以包括测量的目标测量量、 测量的目标过程、 测量上报信 息等其中的一项或多项。 在实施过程中, 目标测量量可以包括具体的 PDCP协议层的 测量量 (例如, PDCP包的吞吐量、 丢包率、 包延迟等指标中的一项或多项), 还可以 包括要测量业务的标识, 所述标识可以是 EPS bearer id或 RB id或 QCI, 或者不携带 业务标识, 则默认是对终端所有业务都进行测量; 测量的目标过程可以是进行测量的 终端的过程状态, 例如, 终端处于切换过程、 RRC重建立过程、 正常业务过程等; 测 量上报信息可以是终端的测量结果的上报方式, 例如, 如果是周期性上报, 则在测量 上报信息中含有测量结果上报的周期。 优选的,网元 1可以通过 RRC信令的方式下通过控制面专用消息下发测量控制信 息到终端。 例如, 采用无线资源控制连接重配置 (RRCConnectionReconfiguration) 消 息或一条新的独立消息。 步骤 S404, 终端按照收到的测量控制信息, 立即对 PDCP层的数据包进行测量。 例如, 目标测量量为 PDCP包的吞吐量、 丢包率、 包延迟等。 终端可以按照测量的需 求, 对目标测量量进行测量。 其中, 吞吐量的计算方式可以为: 终端的 PDCP层在一 定周期内发送包的数目; 丢包率的计算方式可以为: 终端发送的没有收到确认 ACK (ACKNOWLEDGE) 的包数量与发送的全部包数量的比例; 包延迟的测量方式可以 为: 终端记录上行 PDCP包到达的时刻, 和对端网络侧网元 (例如, e B) 接收到这 个 PDCP包并返回确认 ACK的时刻,这两个时刻时间差就是 PDCP包的延迟时间(即, PDCP包的延迟时间 = eNB返回该包 ACK的时间 - 终端 PDCP包的到达时间), 其 中, 终端 PDCP包的到达时间是指应用层的数据包到达终端 PDCP层的时间。 优选地, 终端可以记录每一 PDCP包的测量结果, 也可以在一个测量周期内做算 术平均, 也就是计算一个测量周期内所有 PDCP包的平均吞吐量、 平均丢包率、 平均 延迟时间。 测量周期可以包含在测量控制信息中。 优选地, 终端同时进行所在服务小区无线质量的测量, 还可以进行终端的地理位 置信息的测量。 步骤 S406, 终端周期性的将测量得到 PDCP层的测量结果上报至网络侧网元。在 实施过程中, 用户终端 (User Equipment, 简称为 UE) 可以通过采用 RRC信令的方 式将所述 PDCP 层测量结果上报到网元 1, 例如, 可以采用测量报告 (MeasurementReport) 消息或一条新的独立消息。 优选地, 所述测量结果中可以包括 无线信号质量、 QoS参数信息、 时间信息、 位置信息、 移动性状态、 终端所在的过程 等信息中的一项或多项。 其中, 无线信号质量可以为小区的导频信号质量或者是信道 质量指示(Channel Quality Indicator, 简称为 CQI); QoS参数信息可以为测量的 PDCP 对应的业务 QoS参数(例如, QoS参数包含 QCI和速率信息, 还可以含有地址解释协 议 (Address Resolution Protocol, 简称为 ARP)); 时间信息可以是测量的绝对时间或 者相对时间; 位置信息可以包括终端所处的地理位置; 移动性状态可以为终端的移动 速度等级 (例如, 低速、 中速、 高速); 终端所在的过程可以指切换过程、 RRC 重建 立过程、 正常业务过程等。 优选地, 网元 1可以对 PDCP的测量进行重配置或终止。 例如, 网元 1可以对目 标测量量、测量的目标过程、测量上报信息进行修改, 或者停止部分或全部的测量量。 网元 1发送测量重配置信息到终端, 终端根据测量重配置信息进行测量或终止测量。 通过上述方法, 终端可以根据网络侧网元下发的测量需求进行 PDCP层的测量, 并把测量结果上报找网络侧网元; 网络侧网元可以根据终端上报的 PDCP层的测量结 果, 进行网络优化, 提高用户的 QoS。 优选地, 网络优化可以包括网络配置参数的优 化和无线资源管理算法的优化, 例如, 可以优化 PDCP 数据包的丢弃时间参数 DiscardTimer。 实施例二 本实施例以事件触发的测量上报为例, 提供了一种 QoS的优化方案。 假设本实施 例中的测量的业务都是上行的业务, 终端在网元 1中处于链接态, 网元 1的小区为终 端提供业务。 图 5是根据本发明实施例二的事件上报 PDCP测量结果的流程示意图, 如图 5所 示, 该流程包括以下步骤: 步骤 S502,基于 QoS的优化或其他需求, 网元 1下发 PDCP层测量控制信息到终 端。 其中, 所述测量控制信息包含测量的目标测量量, 还可以含有测量的目标过程、 测量上报信息等其中的一项或多项。 目标测量量包含具体的 PDCP协议层的测量量, 指 PDCP包的吞吐量、 丢包率、 包延迟等指标中的一项或多项, 还可以含有要测量业 务的标识, 所述标识可以是 EPS bearer id或 RB id或 QCI, 或者不携带业务标识, 则 默认是对终端所有业务都进行测量。测量的目标过程是指进行测量的终端的过程状态, 例如, 终端处于切换过程、 RRC重建立过程、 正常业务过程等。 测量上报信息是指终 端的测量结果的上报条件, 例如, 如果是事件方式上报, 测量上报信息可以为一定周 期内的 PDCP包的吞吐量高于某一门限(比如, 5kbits)、 丢包率高于某一门限(比如, 门限为 1%)、时延大于某一门限(比如, 门限为 5ms)、无线信号质量低于某一门限(比 如, 门限为 -85dbm) 等测量上报事件中的一项或多项满足, 则会触发终端 PDCP测量 结果的上报。 优选地,网元 1可以通过 RRC信令的方式下通过控制面专用消息下发测量控制信 息到终端, 例如采用无线资源控制连接重配置 (RRCConnectionReconfiguration) 消息 或一条新的独立消息。 步骤 S504, 终端按照收到的测量控制信息, 立即对 PDCP层的数据包进行测量。 其中, 包延迟的测量方式为: 终端记录上行 PDCP包到达的时刻, 和对端网元 1 (例 如, e B)接收到这个 PDCP包并返回确认 ACK的时刻,这两个时刻时间差就是 PDCP 包的延迟时间, 也就是(eNB返回该包 ACK的时间 -终端 PDCP包的到达时间), 终端 PDCP包的到达时间是指应用层的数据包到达终端 PDCP层的时间; 终端可以按照测 量的需求, 测量 PDCP包的吞吐量、 丢包率。 吞吐量的计算: (终端的 PDCP层一定周 期内的发送包数目); 丢包率的计算: (终端发送的没有收到 ACK 的包数量与发送的 全部包数量的比例)。 优选地, 终端可以记录每一 PDCP包的测量结果, 也可以在一个测量周期内做算 术平均, 也就是计算一个测量周期内所有 PDCP包的平均延迟时间、 平均吞吐量、 平 均丢包率。 测量周期可以包含在测量控制信息中。 终端同时进行所在服务小区无线质 量的测量, 还可以进行终端的地理位置信息的测量。 步骤 S506, 测量结果上报的条件满足。 例如, 一定周期内的 PDCP包的吞吐量已 经高于某一门限 (比如, 5kbits)、 丢包率已经高于某一门限 (比如, 门限为 1%)、 时 延已经大于某一门限 (比如, 门限为 5ms)、 无线信号质量已经低于某一门限 (比如, 门限为 -85dbm) 等。 步骤 S508, 若满足了测量结果上报的条件, 则终端将测量得到 PDCP层的测量结 果上报至网络侧, 网络侧根据终端上报的 PDCP测量结果, 进行网络优化, 提高用户 的 QoS。 在实施过程中, UE可以通过采用 RRC信令的方式包所述 PDCP层测量结果 上报到网元 1, 例如, 可以采用测量报告 (MeasurementReport) 消息或一条新的独立 消息。优选地, 所述测量结果中还可以包括无线信号质量、 QoS参数信息、 时间信息、 位置信息、 移动性状态, 终端所在的过程等信息中的一项或多项。 其中, 无线信号质 量可以是小区的导频信号质量或者是信道质量指示 CQI; QoS 参数信息是指测量的 PDCP对应的业务 QoS参数, QoS参数包含 QCI和速率信息, 还可以含有 ARP; 时间 信息可以是测量的绝对时间或者相对时间; 位置信息包含终端所处的地理位置; 移动 性状态可以是终端的移动速度等级, 例如, 低速、 中速、 高速; 终端所在的过程可以 指切换过程、 RRC重建立过程、 正常业务过程等。 优选地, 网元 1可以对 PDCP的测量进行重配置或终止。 例如, 可以对目标测量 量、 测量的目标过程、 测量上报信息进行修改, 或者停止部分或全部的测量量。 网元 1发送测量重配置信息到终端, 终端根据测量重配置信息进行测量或终止测量。 优选地, 网络优化可以包含网络配置参数的优化和无线资源管理算法的优化, 例 如, 可以优化 PDCP数据包的丢弃时间参数 DiscardTimer。 实施例三 本实施例以 PDCP 层测量开始和测量结果上报均由事件触发为例, 提供了一种 QoS的优化系方案。 图 6是根据本发明实施例三的事件触发测量和事件触发测量结果上报的流程示意 图, 如图 6所示, 终端在网元 1中处于链接态, 网元 1为终端提供业务, 该流程包括 以下步骤: 步骤 S602,基于 QoS的优化或其他需求, 网元 1下发 PDCP层测量控制信息到终 端。 其中, 所述测量控制信息包括测量的目标测量量, 还可以含有测量的目标过程、 测量触发信息、测量上报信息等其中的一项或多项。目标测量量可以包括具体的 PDCP 协议层的测量量, 例如, PDCP包的吞吐量、 丢包率、 包延迟等指标中的一项或多项, 该目标测量量还可以含有要测量业务的标识, 所述标识可以是 EPS bearer id或 RB id 或 QCI, 或者不携带业务标识, 则默认是对终端所有业务都进行测量。 测量的目标过 程是指进行测量的终端的过程状态, 例如, 是终端处于切换过程、 RRC重建立过程、 正常业务过程等。测量触发信息是指 PDCP测量的触发条件(可以记为事件 1 ),例如, 可以是无线信号质量低于某一门限 (例如, 门限为 -75dbm)、 终端到达某一位置区域 (例如, 是 TA1 )、用户的满意度没满足要求等其中的一项或多项。测量上报信息是指 触发终端上报测量结果的条件(可以记为事件 2), 例如, 可以是测量启动后间隔一定 时间 (比如, 100s)、 测量结果的存储空间大小大于某一门限 (比如, 50%)、 终端的 电量低于某一门限 (即, 阈值, 比如, 1%)、 测量的业务结束等其中的一项或多项。 优选地,网元 1可以通过 RRC信令的方式下通过控制面专用消息下发测量控制信 息到终端, 例如采用无线资源控制连接重配置 (RRCConnectionReconfiguration) 消息 或一条新的独立消息。 步骤 S604,终端按照收到的测量控制信息,如果满足了 PDCP测量触发的事件 1, 则对 PDCP层的数据包进行测量。其中,包延迟的测量方式可以为:终端记录上行 PDCP 包到达的时刻, 和对端网元 1接收到这个 PDCP包并返回确认 ACK的时刻, 这两个 时刻时间差就是 PDCP包的延迟时间,也就是(网元 1返回该包 ACK的时间 -终端 PDCP 包的到达时间),终端 PDCP包的到达时间是指应用层的数据包到达终端 PDCP层的时 间; 终端可以按照测量的需求, 测量 PDCP包的吞吐量、 丢包率。 例如, 吞吐量的计 算: (终端的 PDCP层一定周期内的发送包数目); 丢包率的计算: (终端发送的没有收 到 ACK的包数量与发送的全部包数量的比例)。 优选地, 终端可以记录每一 PDCP包的测量结果, 也可以在一个测量周期内做算 术平均, 也就是计算一个测量周期内所有 PDCP包的平均延迟时间、 平均吞吐量、 平 均丢包率。 测量周期可以包含在测量控制信息中。 优选地, 终端同时进行所在服务小区无线质量的测量, 还可以进行终端的地理位 置信息的测量。 步骤 S606, 测量结果上报的事件 2发生。 在实施过程中, 如果网络侧下发的触发 条件是用户的满意度没满足要求时, 终端可以根据应用层的指示来判断业务是否达到 了用户的需求, 也就是通过应用层来确定用户满意度是否达到要求。 步骤 S612, 若满足了测量结果上报的事件 2, 终端将测量得到 PDCP层的测量结 果上报至网络侧。 在实施过程中, UE可以通过采用 RRC信令的方式包所述 PDCP层 测量结果上报到网元 1, 例如, 可以采用测量报告 (MeasurementReport) 消息或一条 新的独立消息。所述测量结果中还可以包括无线信号质量、 QoS参数信息、 时间信息、 位置信息、 移动性状态、 终端所在的过程等信息中的一项或多项。 其中, 无线信号质 量可以为小区的导频信号质量或者是信道质量指示 CQI; QoS 参数信息是指测量的 PDCP对应的业务 QoS参数,例如, QoS参数包括 QCI和速率信息,还可以含有 ARP; 时间信息可以是测量的绝对时间或者相对时间; 位置信息包含终端所处的地理位置; 移动性状态可以为终端的移动速度等级, 例如, 低速、 中速、 高速; 终端所在的过程 可以指切换过程、 RRC重建立过程、 正常业务过程等。 需要说明的是, 在实施过程中, 若网络侧下发的测量控制信息中没有包含测量上 报信息, 终端也可以自行决定何时上报测量结果。 优选地, 该流程还可以包括步骤 S608和步骤 S610, BP , 终端可以在上报 PDCP 测量结果之前, 向网元 1发送一个有测量结果需要上报的指示, 网元 1给终端发送测 量结果上报请求的消息后, 终端上报 PDCP测量结果到网元 1。 在实施过程中, 若网 络侧下发的测量控制信息中没有包含测量上报信息, 终端也可以自行决定何时上报存 在可上报的测量结果的指示。 优选地, 网元 1可以对 PDCP的测量进行重配置或终止。 例如, 网元 1可以对目 标测量量、测量的目标过程、测量上报信息进行修改, 或者停止部分或全部的测量量。 网元 1发送测量重配置信息到终端, 终端根据测量重配置信息进行测量或终止测量。 本实施例中, 网络侧可以根据终端上报的 PDCP测量结果, 进行网络优化, 提高 用户的 QoS。 优选地, 网络优化可以包含网络配置参数的优化和无线资源管理算法的 优化, 例如, 可以优化 PDCP数据包的丢弃时间参数 DiscardTimer。 需要说明的是, 上述实施例中的测量的业务都是指上行的业务。 网元 1, 在 LTE 系统, 是指 e B; 在 UMTS系统, 是指 RNC。 综上所述, 为了满足用户 QoS的需求并且充分利用网络的资源, 本发明实施例提 供了一种在 PDCP层对用户面数据进行测量的方案, 网络侧可以根据终端上报的测量 结果进行 QoS的优化, 提高了系统的 QoS质量。 同时, 也充分利用了网络资源, 为用 户提供了更好的用户体验。 工业实用性 本发明技术方案网络侧可以根据终端上报的测量结果进行 QoS的优化,提高了系 统的 QoS质量, 且可以充分利用网络资源, 满足了用户 QoS的需求。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而可以将 它们存储在存储装置中由计算装置来执行,或者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限 制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 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. 一种服务质量 QoS的优化方法, 包括以下步骤:
网络侧网元向终端下发分组数据汇聚协议 PDCP层测量控制信息; 所述网络侧网元接收到所述终端根据所述 PDCP层测 j量控制信息对 PDCP 层的数据包进行测量后上报的测量结果信息, 并根据所述测量结果信息对网络 的 QoS进行优化。
2. 根据权利要求 1所述的方法, 其中, 所述网络侧网元通过控制面第一专用消息 向所述终端下发所述 PDCP层测量控制信息; 所述终端通过控制面第二专用消 息上报所述测量结果信息。
3. 根据权利要求 1所述的方法, 其中, 所述网络侧网元接收到所述终端上报的所 述测量结果信息之前, 还包括:
所述终端根据所述 PDCP层测量控制信息确定测量机制, 其中, 所述测量 机制包括以下之一: 周期性上报所述测量结果信息、 事件触发所述测量结果信 息的上报、 所述终端进行 DPCP层测量及所述测量结果信息的上报均为事件触 发;
所述终端根据确定的所述测量机制, 对所述 PDCP层的数据包进行测量, 以及对所述测量结果信息进行上报。
4. 根据权利要求 3所述的方法, 其中, 所述终端对所述测量结果信息进行上报包 括:
所述终端向所述网络侧网元发送所述终端有所述测量结果信息需要上报的 指示, 在所述网络侧网元请求所述终端上报所述测量结果信息时, 所述终端向 所述网络侧网元上报所述测量结果信息; 或者,
在所述终端从所述 PDCP层测量控制信息中无法确定上报所述测量结果信 息的方式的情况下, 所述终端自行决定何时向所述网络侧网元上报所述测量结 果信息。
5. 根据权利要求 1所述的方法, 其中, 所述 PDCP层测量控制信息包括至少以下 之一: 目标测量量、 测量的目标过程、 测量上报信息、 测量触发信息。
6. 根据权利要求 5所述的方法, 其中, 所述目标测量量包括 PDCP包的性能指标 和 /或测量业务的标识, 其中,
所述 PDCP包的性能指标包括至少以下之一: 吞吐量、 丢包率、 包延迟; 所述测量业务为上行业务,其标识包括至少以下之一:演进的分组系统 EPS 承载标识、 无线承载标识、 QoS类标识符。
7. 根据权利要求 6所述的方法, 其中, 所述网络侧网元接收到所述终端上报的所 述测量结果信息之前, 所述终端对所述 PDCP层的数据包进行测量时, 所述包 延迟的测量方式为:
所述终端记录所述 PDCP层的数据包到达所述终端的 PDCP层的时间 和 所述网络侧网元接收到该数据包后向所述终端返回的确认消息的时间 t2 ;
所述终端通过 t2减去 ^, 得出所述包延迟。
8. 根据权利要求 5所述的方法, 其中, 所述测量的目标过程为进行测量时所述终 端所处的过程状态, 包括至少以下之一: 切换过程、无线资源控制 RRC重建立 过程、 正常业务过程。
9. 根据权利要求 5所述的方法, 其中, 所述测量上报信息为所述终端上报所述测 量结果信息的周期或触发所述终端上报所述测量结果信息的事件, 其中, 该事 件包括至少以下之一: 测量启动后经过预定时间、 测量结果的存储空间大于预 定门限、 所述终端的电量低于预定阈值、 测量业务结束。
10. 根据权利要求 5所述的方法, 其中, 所述测量触发信息为所述终端进行 PDCP 测量的触发条件, 其中, 所述触发条件包括至少以下之一: 无线信号质量低于 预定门限、 所述终端处于预定区域、 用户的满意度低于预定要求。
11. 根据权利要求 5所述的方法,其中,所述网络侧网元向所述终端下发所述 PDCP 层测量控制信息包括:
所述网络侧网元对所述 PDCP层测量控制信息进行修改, 并将修改后的所 述 PDCP层测量控制信息下发给所述终端; 或者,
所述网络侧网元在所述 PDCP层测量控制信息中携带指示所述终端终止测 量所述目标测量量的标识。
12. 根据权利要求 1所述的方法,其中,所述测量结果信息包括至少以下之一: PCDP 测量结果、 无线信号质量、 与测量的 PDCP对应的业务 QoS参数信息、 测量的 时间信息、 所述终端的位置信息、 所述终端的移动性状态、 所述终端进行测量 时所处的过程状态。
13. 根据权利要求 1至 12中任一项所述的方法, 其中, 所述网络侧网元根据所述 PDCP测量结果对网络的 QoS进行优化包括:
所述网络侧网元根据所述 PDCP 测量结果对网络的配置参数和 /或无线资 源管理算法进行优化, 其中, 所述网络的配置参数包括 PDCP数据包的丢弃时 间。
14. 一种网络侧网元, 包括:
下发模块,设置为向终端下发分组数据汇聚协议层 PDCP层测量控制信息; 接收模块, 设置为接收所述终端根据所述 PDCP层测量控制信息对 PDCP 的数据包进行测量后上报的测量结果信息; 以及
服务质量 QoS优化模块, 设置为根据所述测量结果信息对网络的 QoS进 行优化。
15. 根据权利要求 14所述的网络侧网元, 其中, 在长期演进 LTE系统中, 所述网 络侧网元为演进型基站 eNB; 在通用移动通信系统 UMTS中, 所述网络侧网元 为无线网络控制器 RNC。
16. 一种服务质量 QoS的优化系统,包括终端和权利要求 14或 15所述的网络侧网 元, 其中,
所述终端包括: 测量模块, 设置为根据来自所述网络侧网元的所述 PDCP 层测量控制信息对 PDCP的数据包进行测量; 以及上报模块, 设置为在所述测 量模块进行测量后向所述网络侧网元上报所述测量结果信息。
PCT/CN2011/083321 2011-04-02 2011-12-01 服务质量的优化方法及系统、网络侧网元 WO2012136067A1 (zh)

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