WO2014026546A1 - 异构网络下的层二测量及结果处理方法和设备 - Google Patents

异构网络下的层二测量及结果处理方法和设备 Download PDF

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Publication number
WO2014026546A1
WO2014026546A1 PCT/CN2013/080532 CN2013080532W WO2014026546A1 WO 2014026546 A1 WO2014026546 A1 WO 2014026546A1 CN 2013080532 W CN2013080532 W CN 2013080532W WO 2014026546 A1 WO2014026546 A1 WO 2014026546A1
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measurement
layer
enb
pdcp
qci
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PCT/CN2013/080532
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English (en)
French (fr)
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张大钧
赵亚利
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电信科学技术研究院
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Priority to EP13829313.9A priority Critical patent/EP2887726B1/en
Priority to US14/421,999 priority patent/US20150223093A1/en
Publication of WO2014026546A1 publication Critical patent/WO2014026546A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/08Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823Errors, e.g. transmission errors
    • H04L43/0829Packet loss
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/08Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852Delays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/32Hierarchical cell structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0268Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/105PBS [Private Base Station] network

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a layer two measurement and result processing method and device under a heterogeneous network. Background technique
  • the network architecture of E-UTRAN is shown in Figure 1.
  • the E-UTRAN consists of a base station (e B ).
  • the Mobility Management Entity is connected to the eNB by using the S1-MME interface.
  • the eNB completes the access network function and communicates with the User Equipment (UE) over the air interface.
  • UE User Equipment
  • the S 1-MME interface provides control plane services for the UE, including mobility management and bearer management functions.
  • the Serving GW (S-GW) is connected to the eNB by using an S1-U interface. For each UE attached to the network, there is an S-GW serving the UE.
  • the S-GW is called a UE.
  • the S 1-U interface provides a user plane service for the UE, and the user plane data of the UE is transmitted between the S-GW and the eNB through the S l-U GPRS Tunneling Protocol (GTP).
  • GTP GPRS Tunneling Protocol
  • the user plane and control plane protocol stack between the UE and the network are shown in Figure 2 and Figure 3, respectively.
  • the user plane protocol stack includes a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer.
  • the control plane protocol stack includes a radio resource control (RRC) layer and a non-access stratum (NAS) layer, where the RRC layer message needs to be processed by the user plane protocol layer, and then performed on the air interface. Transmission; NAS layer messages are transmitted in the RRC message over the air interface, and transmitted over the S1 connection through the S1-MME interface.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical
  • the control plane protocol stack includes a radio resource control (RRC) layer and a non-access stratum (NAS) layer, where the RRC layer message needs to be processed by the user plane protocol layer, and then
  • the peer layers of the RRC, PDCP, RLC, MAC, and PHY layers of the UE are all located in the same Within one eNB, the peer layer of the NAS layer of the UE is located in the MME that establishes an S1 connection with the eNB for the UE.
  • the PDCP and RLC entities correspond to Data Radio Bearer (DRB), Signal Radio Bearer (SRB) 1 and SRB2, and each DRB, SRB 1 and SRB2 Corresponding to a set of PDCP and RLC entities respectively; DRB, SRB1 and SRB2 are aggregated at the MAC layer. Therefore, the UE will have multiple sets of PDCP and RLC entities at the same time, but only one MAC layer and physical layer entity.
  • DRB Data Radio Bearer
  • SRB Signal Radio Bearer
  • e B In the LTE network, for the purpose of performance monitoring of the network by load balancing or maintenance and management (OAM), e B needs to be based on a certain measurement configuration, and its physical resource block (Physical Resource Block) , PRB) average usage, number of activated UEs, packet delay, packet loss rate, scheduling throughput, etc.
  • the measurement results are used to report OAM, enabling OAM to master network performance, adjust parameters, optimize network configuration, etc.
  • the measurement results can also be used for the transfer between eNBs to achieve load balancing and resource 4 reporting, so as to reduce the mutual interference, improve resource utilization, and achieve the overall performance of the system.
  • the measurement of the layer two (L2) measurement defined in the existing E-UTRAN is as follows:
  • PRB usage ratio PRB usage
  • the total PRB usage ratio and the PRB usage ratio for each QCI measures the proportion of time-frequency domain resources used. It is mainly used for load balancing to exchange PRB usage information between eNBs through the X2 interface or for OAM performance monitoring.
  • the number of active UEs (Number of active UEs);
  • the number of activated UEs of each QCI is measured, and is separately calculated by the uplink and the downlink, and the measured quantity is used as a parameter for calculating the bit rate that the activated UE can reach.
  • the specific statistical methods are as follows:
  • Uplink (UL) The statistical method is the same as DL, and the data buffer is estimated based on BSR.
  • the end-to-end transmission delay of Layer 2 packets for each QCI is measured for OAM performance monitoring.
  • the specific statistical method is as follows: For each PDCP SDU of the same QCI level in time T, the difference between the receiving time and the sending time is counted, and then the sending and receiving time difference values of all PDCP SDUs are averaged.
  • the downlink receiving moment is: According to the MAC HARQ feedback information, the last piece of the PDCP SDU is successfully received by the UE.
  • the downlink transmission time is: The time when the PDCP SDU arrives at the PDCP upper SAP.
  • the packet loss rate can be broken down into three measurements:
  • the packet discard rate in the QCI level (Packet Discard Rate in the DL per QCI) It is used to count the PDCP SDU packet loss rate of each QCI downlink because of congestion queue management, and is used for OAM performance monitoring.
  • the specific statistical methods are as follows:
  • Packets that are discarded without transmission after the statistics time T including those discarded at the PDCP/MAC/RLC layer.
  • the Packet Uu Loss Rate in the DL per QCI is used to collect the PDCP SDU packets lost by the Uu transmission for OAM performance monitoring.
  • the statistical method is as follows: Based on QCI statistics, the statistics are PDCP SDU.
  • the denominator can be multiplied by 1000000 as a statistical result.
  • each QCI level is the Packet Loss Rate in the UL per QCI.
  • the denominator can be multiplied by 1000000 as a statistical result.
  • the scheduled IP throughput per UE per QCI is measured, excluding the initial buffer time, and the UL/DL statistics are distinguished.
  • Statistics show that the traditional macro base station (Macro eNB) single-layer overlay network can not meet the growing demand for data service speed and capacity. Therefore, the 3rd Generation Partnership for Mobile Communications (3rd Generation Partnership)
  • 3GPP 3rd Generation Partnership Project
  • 3GPP introduces a layered networking approach to solve this problem by deploying low-power base stations, ie, local base stations (Local eNBs), including home base stations, in small coverage environments such as hotspots, home indoor environments, and office environments.
  • Low-power base stations ie, local base stations (Local eNBs)
  • Local eNBs local base stations
  • home base stations small coverage environments such as hotspots, home indoor environments, and office environments.
  • HetNet heterogeneous network
  • the Macro eNB provides basic coverage
  • the Local eNB provides hotspot coverage
  • the Data eNB has a data/signaling interface (wired/wireless interface) between the Local eNB and the Macro eNB.
  • the UE can work under the Macro eNB or the Local eNB.
  • the UE Since the cell coverage controlled by the Local eNB is small and the number of UEs serving is small, the UE is connected to the Local eNB.
  • UEs often get better service shields, such as: Get higher service rates, higher shield links. Therefore, when the UE connected to the Macro eNB approaches the controlled cell of the Local eNB, it can switch to the Local eNB to obtain
  • the service provided by the Local eNB when the UE is away from the cell controlled by the Local eNB, it needs to switch to the cell controlled by the Macro eNB to maintain the wireless connection. Due to the large number of Local eNBs and small coverage, the UE needs to frequently switch between the Macro eNB cell and the Local eNB cell. In order to avoid frequent data transfer interruption caused by frequent switching, one way is The UE can simultaneously aggregate the resources of the Local eNB and the Macro eNB, but the RRC connection is maintained under the Macro eNB, and the Local resource is only used for data transmission, that is, bearer separation.
  • part of the DRB of the UE can be located under the Local eNB, so that the current L2 measurement technology cannot be performed or the measurement is not accurate enough, so the system performance of the Local eNB cannot be accurately and timely monitored.
  • the embodiments of the present invention provide a method and a device for processing layer 2 measurement and result in a heterogeneous network, which are used to solve the problem of how to perform layer 2 measurement in a heterogeneous network.
  • a layer two measurement method under a heterogeneous network comprising:
  • the local eNB After receiving the measurement request, the local eNB performs layer 2 measurement according to the measurement request; the local eNB adds the measurement result of the layer 2 measurement to the processing entity that sends the measurement request.
  • a method for processing a layer 2 measurement result in a heterogeneous network comprising:
  • the processing entity sends a measurement request for performing layer 2 measurement to the Local eNB;
  • the processing entity processes the measurement results.
  • a Local eNB, the Local eNB includes:
  • a receiving unit configured to receive a measurement request
  • a measuring unit configured to perform a layer two measurement according to the measurement request
  • the upper unit is configured to send the measurement result of the layer 2 measurement to the processing entity that sends the measurement request.
  • a processing device comprising:
  • a requesting unit configured to send, to the Local eNB, a measurement request for performing a layer 2 measurement
  • a receiving unit configured to receive, by the local eNB, a measurement result obtained by performing layer 2 measurement according to the measurement request;
  • a processing unit configured to process the measurement result.
  • the processing entity sends a measurement request for layer 2 measurement to the Local eNB, and after receiving the measurement request, the local eNB performs layer 2 measurement according to the measurement request, and reports the measurement result of the layer 2 measurement to the local eNB.
  • a processing entity that sends the measurement request, and the processing entity receives the measurement result that is reported by the local eNB and performs the layer two measurement according to the measurement request, and processes the measurement result.
  • the present invention implements a method for performing layer 2 measurement in a heterogeneous network including a Local eNB and a Macro eNB by using the measurement of the Local eNB.
  • FIG. 1 is a schematic diagram of an E-UTRAN network architecture in the prior art
  • FIG. 2 is a schematic diagram of a user plane protocol stack in the prior art
  • FIG. 3 is a schematic diagram of a control plane protocol stack in the prior art
  • FIG. 4 is a schematic diagram of a hierarchical network deployment scenario in the prior art
  • FIG. 5 is a schematic structural diagram of a control plane separated from a user plane in the prior art
  • FIG. 6 is a schematic structural diagram of a protocol stack corresponding to FIG. 5 in the prior art
  • FIG. 7 is another schematic structural diagram of a control plane separated from a user plane in the prior art
  • FIG. 8 is a schematic flowchart of a method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic flowchart of another method according to an embodiment of the present disclosure.
  • 10a is a schematic flowchart of requesting measurement by a macro base station according to an embodiment of the present invention
  • FIG. 10b is a schematic flowchart of OAM request measurement according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a Local eNB according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a processing device according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a Layer 2 measurement method under a heterogeneous network.
  • a layer 2 measurement method in a heterogeneous network includes the following steps: Step 80: After receiving a measurement request, the Local eNB performs layer 2 measurement according to the measurement request. Step 81: Local eNB The measurement result of the layer 2 measurement is sent to the processing entity that sent the measurement request.
  • the measurement request may include at least one of the following information:
  • Measuring marks measuring marks, measuring targets, measuring quantities, and measuring methods
  • the measurement identifier is used to uniquely identify a measurement application; the measurement target indicates the object to which the measurement is performed; the measurement quantity indicates the content to be measured; and the measurement report mode indicates the manner in which the measurement result is reported.
  • the object to be measured by the layer 2 measurement may be: a terminal, or an evolved radio access bearer (E-RAB), or a cell.
  • E-RAB evolved radio access bearer
  • the way to measure results can be: Immediately on ⁇ ⁇ , or periodically on ⁇ ⁇ , or event trigger on ⁇ ⁇ .
  • the measurement quantity when the Local eNB performs the layer 2 measurement includes at least one of the following measurement quantities: Scheduled IP throughput; Data Loss; Number of active Ues; DL Packet delay; PRB usage; Received Random Access Preambles.
  • the Local eNB can measure the Scheduled IP throughput as follows: For each QCI level, the Local eNB uses the upper layer (the upper service access point (SAP) of the MAC layer as the time reference point, and the data amount of the PDCP protocol data unit (PDU) scheduled in the RLC layer statistical setting time.
  • the MAC layer collects scheduled times for each PDCP PDU, and obtains Scheduled IP throughput according to the statistical data volume and scheduling time; or
  • the local eNB uses the upper layer SAP of the MAC layer as the time reference point for each QCI level, and the scheduling time of the PDCP Service Data Unit (SDU) scheduled in the MAC layer statistical setting time, according to the statistical scheduling time and The actual data volume of each PDCP SDU indicated by the macro base station Macro eNB is obtained by the Scheduled IP throughput.
  • SAP Service Data Unit
  • the method for the Local eNB to measure the Data Loss may be as follows:
  • the Packet Discard Rate in the DL per QCI is measured as follows: The upper SAP of the RLC layer is used as the time reference point, and each QCI is counted. The packet loss rate of PDCP PDUs lost due to congestion during the set time under the level; and/or,
  • Packet Uu Loss Rate in the DL per QCI is measured as follows: The upper SAP of the RLC layer is used as the time reference point, and the Uu in the set time under each QCI level is counted. The packet loss rate of the PDCP SDU transmitted by the interface. For details, refer to the second embodiment.
  • the method for the Local eNB to measure the Number of active UEs may be as follows:
  • the number of downlink active terminals that the Local eNB separates into the Local eNB within the MAC layer statistics set time for each QCI level please refer to the third embodiment.
  • the uplink active terminal that is separated from the Local eNB refers to a terminal that is not empty in the uplink buffer of the corresponding PDCP layer/RCC layer/MAC layer, and part of the DRB of the terminal is located in the Local eNB, and another part of the DRB is located in the Micro eNB. terminal.
  • the downlink active terminal that is separated from the local eNB refers to a terminal that is not empty in the downlink buffer of the corresponding PDCP layer/RCC layer/MAC layer, and part of the DRB of the terminal is located in the Local eNB, and another part of the DRB is located in the terminal of the Micro eNB.
  • the local eNB sends the measurement result of the number of active UEs to the processing entity that sends the measurement request
  • the statistic information of the terminal is also reported to the processing entity that sends the measurement request, so that the processing entity
  • the identification information of the terminal is used to summarize the measurement results.
  • the Local eNB may measure the DL Packet Delay as follows:
  • the Local eNB uses the upper SAP of the RLC layer as the time reference point for arriving the data packet for each QCI level.
  • the lower layer SAP of the MAC layer is used as the time reference point for successfully receiving the data packet, and the transmission delay of the downlink PDCP SDU is counted.
  • Embodiment 4 For details, please refer to Embodiment 4.
  • the Local eNB may measure the PRB usage as follows:
  • the proportion of PRB used by the Local eNB during the SAP statistics set time between the MAC layer and Layer 1 (L1). For details, please refer to Embodiment 5.
  • the Local eNB may measure the Received Random Access Preambles as follows:
  • the number of Preamble codes received by the Local eNB during the SAP statistics set time between the MAC layer and Layer 1. For details, please refer to Embodiment 6.
  • the processing entity that sends the measurement request may be: a Macro eNB, or a Maintenance and Management Entity (OAM).
  • OAM Maintenance and Management Entity
  • an embodiment of the present invention provides a method for processing a layer 2 measurement result in a heterogeneous network, including the following steps:
  • Step 90 The processing entity sends a measurement request for performing layer 2 measurement to the Local eNB.
  • Step 91 The processing entity receives the measurement result that is reported by the local eNB and is performed according to the measurement request.
  • Step 92 The processing entity processes the measurement result.
  • the measurement request includes at least one of the following information:
  • the measurement identifier is used to uniquely identify a measurement application; the measurement target indicates the object to which the measurement is performed; the measurement quantity indicates the content to be measured; and the measurement report mode indicates the manner in which the measurement result is reported.
  • the object to be measured by the layer 2 measurement may be: a terminal, or an E-RAB, or a cell.
  • the way to measure results can be: Immediately on ⁇ ⁇ , or periodically on ⁇ ⁇ , or event trigger on ⁇ ⁇ .
  • the measurement result may include a measurement result of at least one of the following measurement amounts: Scheduled
  • IP transmission Data Loss; Number of active Ues; DL Packet delay; PRB usage; Received
  • the processing entity may process the measurement result by using:
  • the PDCP SDU of the DRB is separated in the set time for each QCI level.
  • the loss rate of the PDCP layer is the same as the QCI corresponding Packet Discard in the measurement result.
  • Rate in the DL per QCI for merging eg, adding
  • ⁇ ( ⁇ , qci) is the downlink packet loss rate of the QCI in time ⁇
  • Ddisc T is the number of downlink PDCP SDUs that the QCI does not pass to the Local eNB and discarded in time T
  • ⁇ ⁇ ' ⁇ is time ⁇
  • 7 is the statistical time.
  • the split DRB refers to a DRB that is separated from the terminal of the Local eNB.
  • the processing entity processes the measurement result, where the processing entity may include:
  • the Macro eNB uses the upper SAP of the PDCP layer as the time reference point, and counts the packet loss rate of the uplink PDCP SDU in the set time of each QCI in the PDCP layer.
  • the Macro eNB may also count the number of uplink active terminals in which all DRBs are located in the Macro eNB and part of the DRBs are located in the Macro eNB within a set time; and/or,
  • the Macro eNB counts the number of downlink active terminals in which all DRBs are located in the Macro eNB and part of the DRBs are located in the Macro eNB.
  • the number of downlink active terminals in which the DRB is located in the Macro eNB and the part of the DRB is located in the Macro eNB is as follows:
  • Counting the number of all DRBs in the Macro eNB, and the downlink buffers of the PDCP layer or the RLC layer or the MAC layer corresponding to each QCI level of the partial DRB of the Macro eNB and the partial DRB of the Macro eNB are non-empty and located at the Local The number of non-empty terminals in the downlink buffer of the PDCP layer corresponding to each QCI level on the partial DRB of the eNB.
  • the step of processing the measurement result by the processing entity may include: when the received measurement result includes the uplink Number of active UEs, the Macro eNB aggregates the received uplink Number of active UEs with the number of the statistics uplink activated terminals;
  • the summary method is to add the received uplink Number of active UEs to the number of statistical uplink activated terminals, and subtract the number of the same terminals counted by the Local eNB and the Macro eNB from the addition result, that is, the combined result value.
  • the Macro eNB summarizes the received downlink Number of active UEs and the number of the statistics downlink activated terminals.
  • the summary method is to add the received downlink Number of active UEs and the number of the statistics downlink activated terminals, and subtract the number of the same terminals counted by the Local eNB and the Macro eNB from the addition result, that is, the combined result value.
  • the processing entity processes the measurement result, where the processing entity may include:
  • the Macro eNB carries the actual data amount of the PDCP SDU of the PDCP PDU in each downlink PDCP PDU sent to the Local eNB;
  • the Macro eNB indicates to the Local eNB the actual data amount of the PDCP SDU of the PDCP PDU for each uplink PDCP PDU on the Local eNB.
  • Step 1 The Macro eNB sends a measurement request message to the Local eNB.
  • Step 2 The Local eNB performs layer 2 measurement according to the measurement request message.
  • Step 3 The local eNB reports the measurement result of the layer 2 measurement to the Macro eNB by using the measurement report message.
  • the processing entity is OAM
  • the overall process of the present invention is as shown in Figure 10b:
  • Step 1 0 AM sends a measurement request message to the Local eNB
  • Step 2 The Local eNB performs layer 2 measurement according to the measurement request message.
  • Step 3 The local eNB reports the measurement result of the layer 2 measurement to the OAM through the measurement report message.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • This embodiment illustrates a measurement method for a Scheduled IP throughput; the measurement target of the measurement may be a terminal, a cell, or an E-RAB.
  • HARQ hybrid automatic retransmission request
  • the time reference point for statistics and measurement is the same as the prior art, and then the Local eNB applies the measurement result to the Macro eNB or OAM.
  • the Macro eNB carries the actual data volume of the PDCP SDU in each downlink PDCP PDU sent to the Local eNB, so that for the UE separated in the Local eNB, the Local eNB can combine the actual data volume of the PDCP SDU (Table 2 ⁇ ⁇ ⁇ > ⁇ and MAC upper SAP statistics results (T1 and T2 of Table 2), calculate the actual downlink Scheduled IP throughput, and send the calculation results as measurement results to the Macro eNB or OAM;
  • Th P TimeDl °
  • ThpTimeDl T ⁇ - T2 [ms] ⁇
  • Method 1 Similar to the downlink method 1, the measurement is calculated by the RLC layer and the MAC layer, and the reference point is
  • the specific statistical method is similar to the downlink. It should be noted that, since the uplink data scheduling is performed by the MAC layer of the Local eNB, it can calculate the time point and determine which is the second data block in combination with the combined PDCP PDU of the RLC layer;
  • Method 2 Similar to the downlink method 2, since the PDCP SDU can only be parsed in the PDCP layer of the Macro, the Macro eNB needs to indicate to the Local eNB the actual data of the PDCP SDU in the PDCP PDU for each PDCP PDU reported by the Local eNB. Then, the local eNB combines the actual data volume of the PDCP SDU with the result of the upper layer SAP statistics of the MAC layer to calculate the actual uplink Scheduled IP throughput, and sends the calculation result as a measurement result to the Macro eNB or OAM; .
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment illustrates a measurement method for the measurement amount Data Loss; the measurement target of the measurement amount may be a terminal, a cell, or an E-RAB.
  • the Local eNB For a UE that is separated by the Local eNB, the Local eNB only needs to count the packet loss rate of the PDCP PDU lost due to congestion on the RLC layer/MAC layer within the set time within each QCI level (the PDCP PDU has not passed through the Uu). Port transmission), the time reference point is the upper layer SAP of the RLC layer, and then the measurement result is reported to the Macro eNB or OAM; the calculation formula of the Packet Discard Rate in the DL per QCI calculated in time T is as follows:
  • the measurement results reported by the Local eNB need to distinguish between different QCI levels.
  • the Macro eNB separately counts the loss rate of the PDCP SDU of the PDB in the set time within the PDCP layer for each QCI level.
  • the calculation formula of the loss rate in the time T is as follows:
  • each parameter is defined as shown in Table 4 below:
  • Table 4 then sets the above q ci , the value and the Packet Discard Rate in the DL statistics of the same QCI level reported by the Local eNB. Finally, the combined value is used as the Packet Discard Rate in the DL statistical measurement of the DRB on the Macro eNB and notified to the OAM of the Macro eNB.
  • the time reference points for statistics and measurements are the same as the prior art, and then the Local eNB sends the measurement results to the Macro eNB or OAM.
  • the Local eNB For the UE separated in the Local eNB, the Local eNB counts the packet loss rate of the PDCP SDU transmitted by the Uu interface within the set time within each QCI level, and then uses the statistical value as a measurement result to the Macro eNB, or directly on the ⁇ Give it to you.
  • the measurement results are distinguished by different QCI levels.
  • the measurement method of the measurement quantity is similar to the prior art, that is, for the UE separated by the Local eNB, the upper layer SAP of the Macro eNB layer can be directly reported to the OAM, and the reported information distinguishes different QCI levels.
  • the top 4 information distinguishes between different QCI levels.
  • each parameter is defined as shown in Table 6 below:
  • Table 6 shows the architecture 2 shown in Figure 7 for the PDCP layer in the Local eNB.
  • the statistical method is the same as the prior art.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a measurement method of the uplink Number of active UEs; the measurement target of the measurement quantity may be a cell.
  • the DRB information in which the PDCP layer is located in the Macro eNB and the RLC layer and the MAC layer are located in the Local eNB may not be counted, that is, only the uplink Number of active UEs of the Macro eNB are counted, including all DRBs in the Macro eNB.
  • the calculation formula of the uplink Number of active UEs calculated in time T is as follows:
  • the statistical method is similar to A), except that the parameters are from the MAC of the Local eNB.
  • the result is reported to the Macro eNB through the interface between the Macro eNB and the Local eNB, which may include the identifier list information of the UE, so that the Macro eNB further aggregates the DRB in the Macro eNB part.
  • the MAC layer of the local eNB may perform statistics and report it to the Macro eNB or the OAM.
  • the DRB information in which the PDCP layer is located in the Macro eNB and the RLC layer and the MAC layer are located in the Local eNB may not be counted, that is, only the downlink Number of active UEs of the Macro eNB are counted, including all DRBs in the Macro eNB.
  • the UE of the Macro eNB will only count the corresponding downlink buffer (buffer) under each QCI level on these DRBs (including PDCP/ Buffer of RLC/MAC layer) The number of non-empty UEs.
  • each parameter is defined as shown in Table 8 below.
  • the number of downlink activated UEs of all DRBs in the Macro eNB is counted in the existing mode, and the number of downlink activated UEs of the partial DRBs in the Macro eNB needs to consider the part located in the Macro eNB.
  • the non-empty case of the corresponding Buffer (including the Buffer of the PDCP/RLC/MAC layer) at each QCI level on the DRB, on the other hand, the Buffer corresponding to each QCI level on the partial DRB of the Local eNB (the PDCP layer)
  • the non-empty case of Buffer indicates the number of downlink activated UEs of the Macro eNB in which there is a separate UE.
  • C) is different from B) in that the number of downlink activated UEs that need to be separated into the Local eNB needs to be statistically counted (instead of only counting the number of UEs whose PDCP buffer is non-empty at each QCI level at each sampling time in time T), which may be obtained by the Local eNB.
  • the number of non-empty UEs corresponding to each QCI level (including the buffer of the RLC/MAC layer) at each sampling time in the time T is counted, and is given to the Macro eNB or OAM.
  • the number of UEs with downlink buffered data at the RLC/MAC layer is the number of UEs with downlink buffered data at the RLC/MAC layer.
  • the measurement result is sent to the Macro eNB
  • the measurement result is reported to the Macro eNB through the interface between the Macro eNB and the Local eNB, and the identifier list information of the UE may be included, so that the Macro eNB is further aggregated in the PDCP.
  • the number of activated UEs calculated by the layer is calculated by the layer.
  • the Local eNB may perform statistics according to the prior art and send the macro to the Macro eNB or the OAM.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the measurement target of the measurement quantity may be a terminal, a cell or an E-RAB.
  • the time reference point of the arriving packet can be set to the RLC layer when the packet delay in the DL measurement is counted.
  • the upper layer SAP, and the time reference point for successfully receiving the data packet is still set to the lower layer SAP of the MAC layer, so that the Local eNB statistically separates the Packet Delay in the DL per QCI of the DRB and uploads it to the Macro eNB or OAM.
  • each parameter is defined as shown in Table 10:
  • the information reported by the Local eNB distinguishes between different QCI levels.
  • the Macro eNB can directly use the measurement result of the Local eNB, and notify the OAM of the Macro eNB, or the Macro eNB can separate the DRB for a period of time.
  • the dwell time of the PDCP SDU in the Macro eNB is as follows:
  • the Macro eNB combines the above-mentioned M values with the same packet delay in the DL statistics and the M-L interface transmission delay from the Local eNB, that is, the three are added. Finally, the combined value is used as the packet delay in the DL measurement value of the DRB on the Macro and is given to the OAM of the Macro eNB.
  • the statistical time reference point and the successfully received time reference point are the same as the prior art, so that the Local eNB statistically separates the DRB.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the measurement method of the PRB usage; the measurement target of the measurement quantity may be a cell.
  • the Local eNB may measure the measurement amount on the SAP between the MAC layer and Layer 1 (LI), and uplink the measurement result to the Macro eNB or its own OAM.
  • LI Layer 1
  • PRB usage includes the total PRB usage ratio (PRB usage) and PRB for each QCI level.
  • the PRB usage per traffic class, the Total PRB usage includes the uplink Total PRB usage and the downlink Total PRB usage;
  • the PRB usage per traffic class includes the uplink PRB usage per traffic class and the downlink PRB usage per traffic class.
  • the statistical method of the uplink Total PRB usage is: The ratio of the total uplink PRB occupied by the uplink PRB used in the statistical time T;
  • the statistical method of the downlink Total PRB usage is: The ratio of the total downlink PRB occupied by the downlink PRB used in the statistical time T;
  • the statistical method of the uplink PRB usage per traffic class is: for each QCI level, the proportion of the total uplink PRB occupied by the uplink PRB used in the time T is separately counted;
  • the statistical method of the downlink PRB usage per traffic class is: For each QCI level, the proportion of the total downlink PRB occupied by the downlink PRB used in the time T is separately counted.
  • Macro e B can directly use the measurement result on the Local eNB as the PRB usage value of the DRB on the Macro eNB and notify the OAM of the Macro eNB.
  • the measurement target of this measurement quantity may be a cell.
  • the Local eNB can measure the measurement between the MAC layer and L1 and send the measurement result to the Macro eNB or its own OAM.
  • the report information can be divided into: the number of dedicated preamble codes received within the set time and the number of random preamble codes received within the set time, and the number of random preamble codes can be further divided into the number of low-value area preamble codes. And the number of preamble codes in the high value area.
  • an embodiment of the present invention further provides a Local eNB, where the Local eNB includes:
  • the receiving unit 110 is configured to receive a measurement request.
  • the measuring unit 111 is configured to perform layer 2 measurement according to the measurement request;
  • the upper unit 112 is configured to send the measurement result of the layer two measurement to the processing entity that sends the measurement request.
  • the receiving unit 110 and the reporting unit 112 may be transmission devices having a transceiving function, and the measuring unit 111 may be a device such as a processor.
  • the measurement request includes at least one of the following information:
  • Measuring marks measuring marks, measuring targets, measuring quantities, and measuring methods
  • the measurement identifier is used to uniquely identify a measurement application; the measurement target indicates an object to which the measurement is performed; the measurement quantity indicates content that needs to be measured; and the measurement report mode indicates a manner in which the measurement result is reported.
  • the object of the layer 2 measurement is: a terminal, or an evolved radio access bearer E-RAB.
  • the method of measuring the result is: immediately on, or periodically, or on an event trigger.
  • the measurement quantity when the measurement unit 111 performs the layer two measurement includes at least one of the following measurement quantities: Scheduling IP throughput Scheduled IP throughput;
  • Receive random access preamble The number of preamble codes Received Random Access Preambks.
  • the measuring unit 111 is configured to: when the measured quantity when performing the layer 2 measurement includes the Scheduled IP throughput, measure the Scheduled IP throughput as follows:
  • the upper layer service access point SAP of the medium access control MAC layer is used as a time reference point, and the data amount of the packet data aggregation protocol PDCP protocol data unit PDU scheduled in the radio link control RLC layer and the MAC layer respectively is set.
  • the scheduled time according to the statistics of the data volume and the scheduling time to obtain the Scheduled IP throughput; or, the upper layer SAP of the MAC layer is used as the time reference point, and the scheduling time of the PDCP service data unit SDU scheduled in the MAC layer statistical setting time, according to the statistics
  • the scheduled time and the actual amount of data of each PDCP SDU indicated by the macro base station Macro eNB are obtained by Scheduled IP throughput.
  • the measuring unit 111 is configured to: when the measurement quantity when performing the layer two measurement includes Data Loss, measure the Data Loss according to the following method:
  • the packet loss rate of the QCI level of each service shield level is measured as follows: Packet Discard Rate in the DL per QCI: The upper layer SAP of the RLC layer is used as the time reference point, and the time in the set time under each QCI level is counted. Packet loss rate of PDCP PDU packet loss caused by congestion; and/or,
  • the Uu port downlink packet loss rate of each QCI level is measured as follows. Packet Uu Loss Rate in the DL per
  • the upper SAP of the RLC layer is used as the time reference point to count the packet loss rate of the PDCP SDU transmitted on the Uu interface within the set time within each QCI level.
  • the measuring unit 111 is configured to: when the measurement quantity when performing the layer two measurement includes the Number of active UEs, measure the Number of active UEs according to the following method:
  • the upper unit 112 is further configured to:
  • the identifier information of the terminal is also sent to the entity that sent the measurement request.
  • the measuring unit 111 is configured to: when the measurement quantity when performing the layer 2 measurement includes the DL Packet delay, measure the DL Packet delay according to the following method:
  • the upper layer SAP of the RLC layer is used as a reference point for arriving the data packet
  • the lower layer SAP of the MAC layer is used as a reference point for successfully receiving the data packet
  • the transmission delay of the downlink PDCP SDU is counted.
  • the measuring unit 111 is configured to: when the measurement quantity when performing the layer two measurement includes the PRB usage, measure the PRB usage according to the following method:
  • the proportion of PRB used during the SAP statistics set time between the MAC layer and layer one.
  • the measuring unit 111 is configured to: when the measured quantity when performing the layer two measurement includes the Received Random Access Preambles, measure the Received Random Access Preambles as follows:
  • the number of Preamble codes received during the SAP statistic set time between the MAC layer and Layer 1.
  • the entity that sends the measurement request is: Macro eNB, or OAM.
  • an embodiment of the present invention further provides a processing device, where the processing device includes:
  • the requesting unit 120 is configured to send, to the Local eNB, a measurement request for performing a layer 2 measurement;
  • the receiving unit 121 is configured to receive, by the local eNB, a measurement result obtained by performing layer 2 measurement according to the measurement request;
  • the processing unit 122 is configured to process the measurement result.
  • the requesting unit 120 and the receiving unit 121 may be transmission devices having a transceiving function, and the processing unit 122 may be a processor or the like.
  • the measurement request includes at least one of the following information:
  • the measurement identifier is used to uniquely identify a measurement application; the measurement target indicates an object to which the layer 2 measurement is targeted; the measurement quantity indicates content that needs to be measured; and the measurement upper 4 ⁇ mode indicates an upper 4 measurement result. The way.
  • the object of the layer 2 measurement is: a terminal, or a local cell, or a data radio access bearer DRB of the terminal.
  • the method of measuring the result is: immediately on, ⁇ , or periodically, ⁇ , or event triggering.
  • the measurement result includes a measurement result of at least one of the following measurement quantities: scheduling IP throughput Scheduled IP throughput;
  • processing unit 122 is configured to:
  • the PDCP SDU that separates the DRB in the set time is separately calculated according to the following formula 1 for each QCI level.
  • the loss rate of the PDCP layer is combined with the calculated Packet Discard Rate in the DL per QCI corresponding to the same QCI in the measurement result, and the combined value is used as the separated DRB on the Macro eNB. Packet Discard Rate in the DL:
  • ⁇ ( ⁇ , qci) is the downlink packet loss rate of the QCI in time ⁇
  • Ddisc T , q ci is the number of downlink PDCP SDUs that the QCI does not pass to the Local eNB and is discarded in time T
  • ⁇ ⁇ ' ⁇ The number of all PDCP SDUs of the QCI entering the PDCP layer within time ;
  • 7 is the statistical time.
  • processing unit 122 is configured to:
  • the processing unit 122 is configured to:
  • the processing entity is a Macro eNB
  • the number of uplink active terminals in which all DRBs are located in the Macro eNB and the part of the DRB is located in the Macro eNB in the statistical setting time; and/or,
  • processing unit 122 is configured to:
  • the number of downlink active terminals in which all DRBs are located in the Macro eNB and part of the DRBs in the Macro eNB is counted as follows:
  • Counting the number of all DRBs in the Macro eNB, and the downlink buffers of the PDCP layer or the RLC layer or the MAC layer corresponding to each QCI level of the partial DRB of the Macro eNB and the partial DRB of the Macro eNB are non-empty and located at the Local The number of non-empty terminals in the downlink buffer of the PDCP layer corresponding to each QCI level on the partial DRB of the eNB.
  • processing unit 122 is further configured to: when the received measurement result includes the uplink Number of active UEs, summarize the received uplink Number of active UEs and the number of the statistics uplink activated terminals;
  • the received measurement result includes the downlink Number of active UEs
  • the received downlink Number of active UEs and the number of the statistics downlink activated terminals are summarized.
  • processing unit 122 is configured to:
  • the processing entity is a Macro eNB
  • the PDCP SDU of the DRB is separated according to the following formula 2, and the stay time of the PDCP SDU in the Macro eNB is calculated.
  • Time and DL Packet delay, Macro eNB and Local eNB component in the measurement result The port transmission delay is combined, and the combined value is used as the DL Packet delay for separating the DRB on the Macro e B;
  • Equation 2 where M(J, qci) is the dwell time of a QCP PDCP SDU in time ⁇ ; tArriv is the time point at which the PDCP SDUi arrives at the upper layer SAP of the PDCP; and the time point sent to the LocaleNB by the PDCP SDUi; The total number of PDCP SDUs; 7 1 is the statistical time.
  • the indicating unit 123 is configured to: when the processing entity is a Macro eNB, carry the actual data amount of the PDCP SDU of the PDCP PDU in each downlink PDCP PDU sent to the Local eNB;
  • the actual data amount of the PDCP SDU of the PDCP PDU is indicated to the Local eNB.
  • the indication unit 123 may be a transmission device having a transceiving function.
  • the processing entity sends a measurement request for layer 2 measurement to the Local eNB, and after receiving the measurement request, the Local eNB performs layer 2 measurement according to the measurement request, and performs layer 2 measurement.
  • the measurement result is reported to the processing entity that sends the measurement request, and the processing entity receives the measurement result reported by the Local eNB and performs layer 2 measurement according to the measurement request, and processes the measurement result.
  • the present invention implements a method for performing layer 2 measurement in a heterogeneous network including a Local eNB and a Macro eNB by measuring the Local eNB.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions are provided for implementing one or more processes and/or block diagrams in the flowchart The steps of the function specified in the box or in multiple boxes.

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Abstract

本发明实施例公开了一种异构网络下的层二测量及结果处理方法和设备,涉及无线通信领域,用于解决异构网络下如何进行层二测量的问题。本发明中,处理实体向本地基站Local eNB发送进行层二测量的测量请求,Local eNB在接收到测量请求后,根据该测量请求进行层二测量,将层二测量的测量结果上报给发送所述测量请求的处理实体,处理实体接收Local eNB上报的、根据测量请求进行层二测量得到的测量结果,并对所述测量结果进行处理。可见,本发明解决了所述问题。

Description

异构网络下的层二测量及结果处理方法和设备 本申请要求在 2012年 8月 17日提交中国专利局、 申请号为 201210295666.5、发明名称 为"异构网络下的层二测量及结果处理方法和设备"的中国专利申请的优先权, 其全部内容 通过引用结合在本申请中。 技术领域
本发明涉及无线通信领域, 尤其涉及一种异构网络下的层二测量及结果处理方法和设 备。 背景技术
演进通用陆地无线接入网络 ( Evolved Universal Terrestrial Radio Access Network ,
E-UTRAN ) 的网络架构如图 1所示, E-UTRAN由基站( e B )组成。
移动性管理实体 ( Mobility Management Entity, MME ) 与 eNB之间釆用 S 1-MME接 口相连; eNB完成接入网功能, 与用户设备(User Equipment, UE )通过空中接口通信。 对于每一个附着到网络的 UE,有一个 MME为其提供服务,该 MME称为 UE的服务 MME。 S 1-MME接口为 UE提供控制面服务, 包括移动性管理和承载管理功能。
服务网关 ( Serving GW, S-GW ) 与 eNB之间釆用 S 1-U接口相连, 对于每一个附着 到网络的 UE, 有一个 S-GW为其提供服务, 该 S-GW称为 UE的服务 S-GW。 S 1-U接口 为 UE提供用户面服务, UE的用户面数据通过 S l-U GPRS 隧道协议(GPRS Tunneling Protocol, GTP )承载在 S-GW和 eNB之间传输。
UE与网络之间的用户面和控制面协议栈分别如图 2和图 3所示。 用户面协议栈包括 分组数据聚合协议( Packet Data Convergence Protocol, PDCP )层、无线链路控制( Radio Link Control, RLC )层、 媒体接入控制 ( Medium Access Control, MAC )层和物理(PHY )层; 控制面协议栈包括无线资源控制(Radio Resource Control, RRC )层和非接入( Non- Access Stratum, NAS )层, 其中, RRC层消息需要经过用户面协议层的处理, 再在空中接口进行 传输; NAS层消息在空中接口封装在 RRC消息中传输, 通过 S 1 -MME接口, 在 S 1连接 上传输。
在现有的长期演进 ( Long Term Evolution , LTE ) /长期演进升级 ( Long Term Evolution- Advanced, LTE-A ) 网络中, UE的 RRC、 PDCP、 RLC、 MAC和 PHY层的对等 层都位于同一个 eNB内, UE的 NAS层的对等层位于与上述 eNB建立了针对该 UE的 S 1 连接的 MME内。
在现有协议中, PDCP和 RLC实体与数据无线承载(Data Radio Bearer, DRB )、 信令 无线承载(Signal Radio Bearer, SRB ) 1和 SRB2对应, 每一条 DRB、 SRB 1和 SRB2都 分别对应一套 PDCP和 RLC实体; DRB、 SRB1和 SRB2在 MAC层汇聚。 因此, UE会同 时有多套 PDCP和 RLC实体, 但只有一个 MAC层和物理层实体。
在 LTE的网络中,出于负荷均衡或维护与管理实体( Operations,Administration and Maintenance, OAM )对网络进行性能监测的目的, e B需要根据一定的测量配置, 对其 物理资源块(Physical Resource Block, PRB ) 的平均使用率、 激活 UE数目、 包延时、 丢 包率、调度吞吐量等进行测量, 测量的结果用于上报 OAM, 使 OAM能够实现掌握网络性 能和调整参数、 优化网络配置等目的; 测量结果还可以用于 eNB之间传递, 实现负荷均衡 和资源 4艮告这样的目的, 以降低相互之间的千扰, 提高资源利用率, 达到系统总的性能得 以提升的目的。
现有的 E-UTRAN中定义的层二( L2 )测量的测量量如下:
第一, PRB使用比例 (PRB usage);
分总的 PRB使用比例和每种 QCI的 PRB使用比例。 这个测量量测量的是时频域资源 的使用比例, 主要用于负载均衡通过 X2接口在 eNB间交互 PRB使用信息或者用于 OAM 性能监测。
第二, 接收随机接入 preamble数量 (Received Random Access Preambles);
统计每秒内接收到的各种 preamble数量。 主要用于 RACH配置的优化。
第三, 激活 UE数目(Number of active UEs);
测量每种 QCI的激活 UE数目, 分上下行分别统计, 该测量量作为计算激活 UE能达 到的比特速率的一个参数。 具体统计方法如下:
下行链路( DL ): 统计时间 T内每个抽样时刻每个 QCI等级有 DL DRB且对应 buffer
(包括 PDCP/RLC/MAC )非空的 UE个数, 然后对时间 T内每次抽样结果求和, 再除以时 间 T。
上行链路( UL ): 统计方法和 DL相同, 对于 data buffer根据 BSR估计。
第四, 下行数据包延时 (DL Packet delay);
测量每种 QCI的层二数据包的端到端传输延时, 用于 OAM性能监测。 其具体统计方 法如下: 对时间 T内相同 QCI等级的每个 PDCP SDU统计其接收时刻和发送时刻的差值, 然后对所有 PDCP SDU的收发时间差值做平均。
下行接收时刻为: 根据 MAC HARQ反馈信息, PDCP SDU的最后一个 piece被 UE成 功接收。
下行发送时刻为: PDCP SDU到达 PDCP upper SAP的时间。
第五, 数据丢失率 (Data Loss);
数据包丢失率又可以细分为三个测量量:
其一, 每个 QCI等级的下行丢包率 (Packet Discard Rate in the DL per QCI) 用于统计每种 QCI下行因为拥塞队列管理的 PDCP SDU丢包率,用于 OAM性能监测。 具体统计方法如下:
统计时间 T内除切换之外其它没有经过传输就丢弃的数据包,包括在 PDCP/MAC/RLC 层丢弃的。
其二, 每个 QCI等级的 Uu口下行丢包率 (Packet Uu Loss Rate in the DL per QCI) 用于统计 Uu传输丢失的 PDCP SDU数据包, 用于 OAM性能监测。 统计方法如下: 基于 QCI统计, 统计的是 PDCP SDU。
统计时间 T内, 在空中接口传输过但是未正确接收且不再重传的数据包与该时间段内 空中接口该 QCI等级一共传输的数据包(正确接收和未正确接收) 的比值。
由于数据太小, 所以分母可以乘以 1000000作为统计结果。
其三, 每个 QCI等级 UL丢包率 (Packet Loss Rate in the UL per QCI)
用于统计 UL丢失的数据包, 用于 OAM性能监测。 统计方法:
统计时间 T内,每个 QCI等级 missing的 UL PDCP SDU个数和时间 T内总的 UL PDCP SDU的比值(从 T开始时刻第一个递交到高层的 PDCP SDU的 SN算起到最后一个递交 PDCP SN )。
由于数据太小, 所以分母可以乘以 1000000作为统计结果。
第六, 调度 IP吞吐量 (Scheduled IP throughput);
测量每 QCI每 UE的调度 IP吞吐量, 不包含初始的緩存时间, 区分 UL/DL统计。 统计表明, 传统的宏基站(Macro eNB )单层覆盖网络已经不能满足人们对数据业务 速率和容量不断增长的需求。 因此,第三代移动通信标准化组织( 3rd Generation Partnership
Project, 3GPP )引入了分层组网的方式来解决该问题, 即通过在热点区域、 家庭室内环境、 办公环境等小覆盖环境布设一些低功率的基站即本地基站 (Local eNB ), 包括家庭基站
( Femto ) /微基站(Pico ) /中继设备(Relay )等形式, 以获得小区分裂的效果, 使得运营 商能够为用户提供更高数据速率、 更低成本的业务。 在 E-UTRAN架构基础上, 如果引入 分层组网, 那么新的包含 Local eNB和 Macro eNB的异构网络( HetNet )部署场景如图 4 所示。 其中 Macro eNB提供基础覆盖, Local eNB提供热点覆盖, Local eNB与 Macro eNB 之间存在数据 /信令接口 (有线 /无线接口), UE可以工作在 Macro eNB或 Local eNB下。
由于 Local eNB控制的小区覆盖范围小, 服务的 UE少, 所以, 连接到 Local eNB的
UE往往能获得更好的服务盾量, 如: 获得更高的业务速率, 更高盾量的链路。 因此, 当 连接到 Macro eNB的 UE接近 Local eNB的控制的小区时, 可以切换到 Local eNB以获得
Local eNB提供的服务; 当 UE远离 Local eNB控制的小区时, 需要切换到 Macro eNB控 制的小区, 以保持无线连接。 由于 Local eNB数量多, 覆盖小, 导致 UE需要频繁在 Macro eNB小区和 Local eNB小区之间切换。 为了避免频繁切换导致数据传输中断, 一种方式就 是让 UE可以同时聚合 Local eNB和 Macro eNB的资源,但是 RRC连接维持在 Macro eNB 下, Local资源仅用于数据传输, 即承载分离。
承载分离有多种网络架构设计, 其中一种架构如图 5所示, 对应的用户面、 控制面协 议栈如图 6所示; 另一种架构如图 7所示。
综上, 在 HetNet场景下, UE的部分 DRB可以位于 Local eNB下, 这样当前的 L2测 量技术将无法执行或测量不够准确, 因此不能及时准确的监控 Local eNB的系统性能。 发明内容
本发明实施例提供一种异构网络下的层二测量及结果处理方法和设备, 用于解决异构 网络下如何进行层二测量的问题。
一种异构网络下的层二测量方法, 该方法包括:
本地基站 Local eNB在接收到测量请求后, 根据该测量请求进行层二测量; 所述 Local eNB将层二测量的测量结果上 ·ί艮给发送所述测量请求的处理实体。
一种异构网络下的层二测量结果处理方法, 该方法包括:
处理实体向 Local eNB发送进行层二测量的测量请求;
处理实体接收所述 Local eNB上报的、 根据所述测量请求进行层二测量得到的测量结 果;
处理实体对所述测量结果进行处理。
一种 Local eNB, 该 Local eNB包括:
接收单元, 用于接收测量请求;
测量单元, 用于根据该测量请求进行层二测量;
上 4艮单元, 用于将层二测量的测量结果上 4艮给发送所述测量请求的处理实体。
一种处理设备, 该处理设备包括:
请求单元, 用于向 Local eNB发送进行层二测量的测量请求;
接收单元, 用于接收所述 Local eNB上报的、 根据所述测量请求进行层二测量得到的 测量结果;
处理单元, 用于对所述测量结果进行处理。
本发明实施例提供的方案中, 处理实体向 Local eNB发送进行层二测量的测量请求, Local eNB在接收到测量请求后, 根据该测量请求进行层二测量, 将层二测量的测量结果 上报给发送所述测量请求的处理实体, 处理实体接收 Local eNB上报的、 根据测量请求进 行层二测量得到的测量结果, 并对所述测量结果进行处理。 可见, 本发明通过 Local eNB 的测量上 4艮实现了包括 Local eNB和 Macro eNB的异构网络下进行层二测量的方法。 附图说明
图 1为现有技术中的 E-UTRAN网络架构示意图;
图 2为现有技术中的用户平面协议栈示意图;
图 3为现有技术中的控制平面协议栈示意图;
图 4为现有技术中的分层网络部署场景示意图;
图 5为现有技术中的控制面与用户面分离的架构示意图;
图 6为现有技术中的与图 5对应的协议栈结构示意图;
图 7为现有技术中的控制面与用户面分离的另一架构示意图;
图 8为本发明实施例提供的方法流程示意图;
图 9为本发明实施例提供的另一方法流程示意图;
图 10a为本发明实施例中的宏基站请求测量的流程示意图;
图 10b为本发明实施例中的 OAM请求测量的流程示意图;
图 11为本发明实施例提供的 Local eNB结构示意图;
图 12为本发明实施例提供的处理设备结构示意图。 具体实施方式
为了解决异构网络下如何进行层二测量的方法, 本发明实施例提供一种异构网络下的 层二测量方法。
参见图 8, 本发明实施例提供的异构网络下的层二测量方法, 包括以下步骤: 步骤 80: Local eNB在接收到测量请求后, 根据该测量请求进行层二测量; 步骤 81 : Local eNB将层二测量的测量结果上 ·ί艮给发送测量请求的处理实体。
较佳的, 测量请求中可以包含如下信息中的至少一个:
测量标识、 测量目标、 测量量、 测量上 4艮方式;
其中, 测量标识用于唯一标识一个测量应用; 测量目标指示层二测量所针对的对象; 测量量指示需要测量的内容; 测量上报方式指示上报测量结果的方式。
具体的, 层二测量所针对的对象可以为: 终端, 或演进无线接入承载 (E-RAB ), 或 小区。 上 ·ί艮测量结果的方式可以为: 立即上 ·ί艮、 或周期性上 ·ί艮、 或事件触发上 ·ί艮。
具体的, Local eNB进行层二测量时的测量量包括以下测量量中的至少一个: 调度 IP 吞吐量( Scheduled IP throughput );数据丢失率( Data Loss );激活 UE数目( Number of active Ues ); 下行数据包延时 ( DL Packet delay ); 物理资源块( PRB )使用比例 ( PRB usage ); 接收随机接入前导 ( preamble )码的数量 ( Received Random Access Preambles )。
在 Local eNB进行层二测量时的测量量包括 Scheduled IP throughput时, Local eNB对 Scheduled IP throughput进行测量的方法可以如下: Local eNB针对每个 QCI等级, 以 MAC层的上层( upper ) 业务接入点 ( SAP ) 为时 间参考点, 在 RLC层统计设定时间内调度的 PDCP协议数据单元(PDU ) 的数据量、 在 MAC层统计对各 PDCP PDU的调度时间,根据统计的数据量和调度时间得到 Scheduled IP throughput; 或者,
Local eNB针对每个 QCI等级, 以 MAC层的上层 SAP为时间参考点, 在 MAC层统 计设定时间内调度的 PDCP业务数据单元( Service Data Unit, SDU )的调度时间, 根据统 计的调度时间以及宏基站 Macro eNB指示的各 PDCP SDU的实际数据量得到 Scheduled IP throughput 具体可以参见实施例一。
在 Local eNB进行层二测量时的测量量包括 Data Loss时,所述 Local eNB对 Data Loss 进行测量的方法可以如下:
按照如下方法测量每个业务盾量等级标识( QoS Class Identifier, QCI )等级的下行丢 包率 ( Packet Discard Rate in the DL per QCI ): 以 RLC层的上层 SAP为时间参考点, 统计 每个 QCI等级下设定时间内的由于拥塞导致的 PDCP PDU丢包的丢包率; 和 /或,
按照如下方法测量每个 QCI等级的 Uu口下行丢包率( Packet Uu Loss Rate in the DL per QCI ): 以 RLC层的上层 SAP为时间参考点, 统计每个 QCI等级下设定时间内的 Uu接口 传输的 PDCP SDU的丢包率。 具体可以参见实施例二。
在 Local eNB进行层二测量时的测量量包括 Number of active UEs时, Local eNB对 Number of active UEs进行测量的方法可以如下:
Local eNB针对每个 QCI等级,在 MAC层统计设定时间内分离到 Local eNB的上行激 活终端的数目; 和 /或,
Local eNB针对每个 QCI等级,在 MAC层统计设定时间内分离到 Local eNB的下行激 活终端的数目。 具体可以参见实施例三。
这里, 分离到 Local eNB的上行激活终端, 是指对应的 PDCP层/ RLC层/ MAC层的上 行緩冲区非空的终端,且该终端的部分 DRB位于 Local eNB、另一部分 DRB位于 Micro eNB 的终端。 分离到 Local eNB的下行激活终端, 是指对应的 PDCP层/ RLC层/ MAC层的下行 緩冲区非空的终端,且该终端的部分 DRB位于 Local eNB、另一部分 DRB位于 Micro eNB 的终端。
较佳的,在 Local eNB将对 Number of active UEs的测量结果上 4艮给发送测量请求的处 理实体时, 还将统计的终端的标识信息上报给发送测量请求的处理实体, 以使处理实体根 据终端的标识信息进行测量结果的汇总。
在 Local eNB进行层二测量时的测量量包括 DL Packet delay时, Local eNB对 DL Packet delay进行测量的方法可以如下:
Local eNB针对每个 QCI等级, 以 RLC层的上层 SAP作为到达数据包的时间参考点, 将 MAC层的下层(under ) SAP作为成功接收数据包的时间参考点, 统计下行 PDCP SDU 的传输延时。 具体可以参见实施例四。
在 Local eNB进行层二测量时的测量量包括 PRB usage时, Local eNB对 PRB usage进 行测量的方法可以如下:
Local eNB在 MAC层和层一( L1 )之间的 SAP统计设定时间内的 PRB的使用比例。 具体可以参见实施例五。
在 Local eNB进行层二测量时的测量量包括 Received Random Access Preambles时, Local eNB对 Received Random Access Preambles进行测量的方法可以如下:
Local eNB在 MAC层和层一之间的 SAP统计设定时间内接收的 Preamble码的数目。 具体可以参见实施例六。
本方法中, 发送测量请求的处理实体可以为: Macro eNB, 或维护与管理实体( OAM ) 等。
参见图 9, 本发明实施例提供一种异构网络下的层二测量结果处理方法, 包括以下步 骤:
步骤 90: 处理实体向 Local eNB发送进行层二测量的测量请求;
步骤 91: 处理实体接收 Local eNB上报的、 根据该测量请求进行层二测量得到的测量 结果;
步骤 92: 处理实体对测量结果进行处理。
较佳的, 测量请求中包含如下信息中的至少一个:
测量标识、 测量目标、 测量量、 测量上 ·ί艮方式;
其中, 测量标识用于唯一标识一个测量应用; 测量目标指示层二测量所针对的对象; 测量量指示需要测量的内容; 测量上报方式指示上报测量结果的方式。
具体的, 层二测量所针对的对象可以为: 终端, 或 E-RAB, 或小区。 上 ·ί艮测量结果的 方式可以为: 立即上 ·ί艮、 或周期性上 ·ί艮、 或事件触发上 ·ί艮。
具体的, 测量结果可以包括对以下测量量中的至少一个测量量的测量结果: Scheduled
IP throughput; Data Loss; Number of active Ues; DL Packet delay; PRB usage; Received
Random Access Preamblss。
具体的, 在测量结果包括对 Packet Discard Rate in the DL per QCI的测量结果、 且处理 实体为 Macro eNB时, 处理实体对测量结果进行处理的步骤可以包括:
按照如下公式一针对每个 QCI等级分别统计设定时间内分离 DRB的 PDCP SDU在
PDCP层的丢失率,将计算得到的丢失率与所述测量结果中相同 QCI对应的 Packet Discard
Rate in the DL per QCI进行合并(例如相加), 将合并值作为 Macro eNB上分离 DRB的
Packet Discard Rate in the DL:
Figure imgf000010_0001
其中, Μ(Γ, qci)为时间 τ内该 QCI的下行丢包率; Ddisc T, 为时间 T内该 QCI 没有传递给 Local eNB并丢弃的下行 PDCP SDU的数目; Ν Τ' ^为时间 Τ内进入 PDCP 层的该 QCI的所有 PDCP SDU的数目; 7为统计时间。 这里, 分离 DRB是指分离在 Local eNB的终端的 DRB。
具体的, 在测量结果中不包含 Packet Loss Rate in the UL per QCI时, 处理实体对测量 结果进行处理的步骤可以包括:
Macro eNB以 PDCP层的上层 SAP为时间参考点, 在 PDCP层统计每个 QCI下设定 时间内的上行 PDCP SDU的丢包率。
进一步的,在处理实体为 Macro eNB时, Macro eNB还可以统计设定时间内所有 DRB 位于 Macro eNB以及部分 DRB位于 Macro eNB的上行激活终端的数目; 和 /或,
Macro eNB统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB 的下行激活终端的数目。
上述 Macro eNB统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB的下行激活终端的数目, 具体实现方法可以如下:
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空的终端的数目; 或者,
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空、 且位于 Local eNB的部分 DRB上每个 QCI等级下对应的 PDCP层的下行緩冲区非空 的终端的数目。
具体的, 处理实体对测量结果进行处理的步骤可以包括: 在接收的测量结果包括上行 Number of active UEs时, Macro eNB将接收到的上行 Number of active UEs与统计的上行 激活终端的数目进行汇总;汇总方法为将接收到的上行 Number of active UEs与统计的上行 激活终端的数目相加,并将相加结果减去 Local eNB与 Macro eNB统计的相同终端的数目, 即为汇总后的结果值。
在接收的测量结果包括下行 Number of active UEs时, Macro eNB将接收到的下行 Number of active UEs与统计的下行激活终端的数目进行汇总。汇总方法为将接收到的下行 Number of active UEs与统计的下行激活终端的数目相加, 并将相加结果减去 Local eNB与 Macro eNB统计的相同终端的数目, 即为汇总后的结果值。 具体的,在测量结果包括对 DL Packet delay的测量结果、且处理实体为 Macro eNB时, 处理实体对测量结果进行处理的步骤可以包括:
按照如下公式二统计设定时间内分离 DRB的 PDCP SDU在 Macro eNB的停留时间, 将计算得到的停留时间与所述测量结果中的 DL Packet delay、 Macro eNB与 Local eNB间 的接口传输时延进行合并(例如相加),将合并值作为 Macro eNB上分离 DRB的 DL Packet delay;
tSend(f) - tArrivii)
M(T, qci) =
其中, M(J, qci)为时间 τ内一个 QCI的 PDCP SDU的停留时间; tArriv 为 PDCP SDUi 到达 PDCP上层 SAP的时间点; 、为 PDCP SDUi发送给 LocaleNB的时间点; (^)为总的 PDCP SDU的数目; 71为统计时间。
较佳的,在处理实体为 Macro eNB时, Macro eNB在发给 Local eNB的每个下行 PDCP PDU中携带该 PDCP PDU的 PDCP SDU的实际数据量;
Macro eNB对于 Local eNB上 4艮的每个上行 PDCP PDU, 向 Local eNB指示该 PDCP PDU的 PDCP SDU的实际数据量。
在处理实体为 Macro eNB时, 本发明的整体流程如图 10a所示:
步骤 1 : Macro eNB向 Local eNB发送测量请求消息;
步骤 2: Local eNB根据测量请求消息进行层二测量;
步骤 3: Local eNB将层二测量的测量结果通过测量上报消息上报给 Macro eNB。 在处理实体为 OAM时, 本发明的整体流程如图 10b所示:
步骤 1: 0 AM向 Local eNB发送测量请求消息;
步骤 2: Local eNB根据测量请求消息进行层二测量;
步骤 3: Local eNB将层二测量的测量结果通过测量上报消息上报给 OAM。
下面结合具体实施例对本发明中各种测量量的测量方法进行说明:
实施例一:
本实施例说明对测量量 Scheduled IP throughput的测量方法;该测量量的测量目标可以 是终端、 小区或 E-RAB。
(一 )对于下行:
方法 1 : 对于分离在 Local Cell的 UE, Local eNB根据 UE分离在其下的每个 E-RAB , 进行 Scheduled IP throughput测量量的统计,由于如图 5所示的架构 1中的 PDCP位于 Macro eNB , 因此在 RLC层和 MAC层统计该测量量, 时间参考点为 MAC层上层的 SAP , 具体 统计方法: ¾口下: 对于小数据包(即该数据包所有数据可以通过一次混合自动重传请求( HARQ )发送), ThpTimeDl = 0 , 否则 ThpTimeDl = T\ _ T2 [ms] , 其中 Τ 1Τ2的定义如下表!.
Figure imgf000012_0001
表 1
时间 T内统计的下行 Scheduled IP throughput的计算公式如下:
^ m„ , Y ThpVolDl
如果 X ThpTimeDl > 0, 贝 lj Scheduled IP throughput = ~ xl 000 [kbits I s]
2^ ThpTimeDl ; 如果 J ThpTimeDl = 0,贝 lj Scheduled IP throughput = 0 [kbits I s] 随后将下行 Scheduled IP throughput的计算结果作为测量结果上 4艮给 Macro eNB或 OAM, 上报信息区分不同 UE不同 QCI等级。
对于 PDCP位于 Local eNB的如图 7所示的架构 2 , 统计和测量的时间参考点与现有 技术同, 随后 Local eNB将测量结果上 ·ί艮给 Macro eNB或 OAM。
方法 2 , Macro eNB在发给 Local eNB的每个下行 PDCP PDU中携带 PDCP SDU的实 际数据量, 这样对于分离在 Local eNB的 UE, Local eNB可以结合 PDCP SDU的实际数据 量 (表 2 {ή ΡνοίΓ>ί和 MAC上层 SAP统计的结果(表 2的 T1和 T2 ), 计算出真实的 下行 Scheduled IP throughput, 并将计算结果作为测量结果发给 Macro eNB或 OAM;
计算公式与现有的定义相同, 如下:
对于小数据包, ThPTimeDl = ° , 否则 ThpTimeDl = T\ - T2 [ms] ^ 其中 TT2的定义 如下表 2:
Figure imgf000012_0002
Figure imgf000013_0001
时间 T内统计的下行 Scheduled IP throughput的计算公式如下:
^ m„ , Y ThpVolDl
如果 X ThpTimeDl > 0,贝 lj Scheduled IP throughput ~ x\000[kbits / s]
2^ ThpTimeDl ; 如果 J ThpTimeDl = 0,贝 Scheduled IP throughput = 0 [kbits I s] (二)对于上行:
方法 1 : 与下行的方法 1 类似, 该测量量由 RLC层和 MAC层进行统计, 参考点为
MAC层上层的 SAP , 具体统计方法与下行的类似。 需要说明的是, 因为上行数据调度由 Local eNB的 MAC层进行,因此其可以计算出时间点,并结合 RLC层合并后的 PDCP PDU 确定哪个是倒数第 2个数据块;
方法 2: 与下行的方法 2类似, 由于 PDCP SDU只能在 Macro的 PDCP层解析出, 因 此 Macro eNB需要针对 Local eNB上报的每个 PDCP PDU,向 Local eNB指示该 PDCP PDU 中 PDCP SDU的实际数据量, 然后由 Local eNB结合 PDCP SDU的实际数据量和 MAC层 上层 SAP统计的结果, 计算出真实的上行 Scheduled IP throughput, 并将计算结果作为测 量结果发给 Macro eNB或 OAM; 计算公式与下行类似。
实施例二:
本实施例说明对测量量 Data Loss的测量方法; 该测量量的测量目标可以是终端、 小 区或 E-RAB。
(一) Packet Discard Rate in the DL per QCI的测量方法;
a)对于分离在 Local eNB下的 UE, Local eNB仅需统计每个 QCI等级下设定时间内 RLC层/ MAC层上由于拥塞导致的 PDCP PDU丢包的丢包率(该 PDCP PDU未经过 Uu口 传输), 时间参考点为 RLC层的上层 SAP , 随后将测量结果上报给 Macro eNB或 OAM; 时间 T内统计的 Packet Discard Rate in the DL per QCI的计算公式如下:
Figure imgf000013_0002
L NiT, qcf} 其中, 各参数定义如下表 3 :
Figure imgf000013_0003
时间 T内,进入 Local eNB 的 RLC层的
N(T, qci)
该 QCI等级的所有 PDCP PDU的数量
T 统计时间
表 3
Local eNB上报的测量结果需要区分不同 QCI等级。
b) Macro eNB针对每个 QCI等级分别统计设定时间内分离 DRB的 PDCP SDU在 PDCP 层的丢失率, 时间 T内统计的丢失率的计算公式如下:
Figure imgf000014_0001
其中, 各参数定义如下表 4:
Figure imgf000014_0002
表 4 然后将上述 qci、值和 Local eNB上报的 QCI等级相同的 Packet Discard Rate in the DL统计值。 最后将合并值作为 Macro eNB上分离 DRB的 Packet Discard Rate in the DL统 计测量量并通知给 Macro eNB的 OAM。
对于 PDCP层位于 Local eNB的如图 7所示的架构 2 , 统计和测量的时间参考点与现 有技术同, 随后 Local eNB将测量结果上 ·ί艮给 Macro eNB或 OAM。
(二) Packet Uu Loss Rate in the DL per QCI的测量方法;
对于分离在 Local eNB的 UE, Local eNB统计每个 QCI等级下设定时间内 Uu接口传 输的 PDCP SDU的丢包率, 随后将统计值作为测量结果上 4艮给 Macro eNB , 或直接上 ·ί艮 给 ΟΑΜ。
Local eNB上 ·ί艮的测量结果区分不同 QCI等级。
时间 Τ内统计的 Packet Uu Loss Rate in the DL per QCI的计算公式如下:
、 DlossiT, qci) * 1000000
M(T, qci) = ~
L N(T, qci) + Dloss(T, qci) 其中, 各参数定义如下表 5 : 时间 T内, 一个 QCI的 Uu口下行丢包
M(J qcf)
时间 T内, 该 QCI的至少一部分数据块
Dloss(T, qci) 已在空中接口发送但没有收到确认且不再发
送的下行 PDCP PDU的数量
时间 T内, 该 QCI已在空中接口发送并
N(T, qci)
收到确认的下行 PDCP PDU的数量
T 统计时间
(三 ) Packet Loss Rate in the UL per QCI的测量方法;
该测量量的测量方法与现有技术类似, 即对于分离在 Local eNB的 UE, 由 Macro eNB 层的上层 SAP , 可以直接上报给 OAM, 上报信息区分不同 QCI等级。
上 4艮信息区分不同 QCI等级。
Figure imgf000015_0001
其中, 各参数定义如下表 6:
Figure imgf000015_0002
表 6 对于 PDCP层位于 Local eNB的如图 7所示的架构 2 , 统计方法与现有技术同。
实施例三:
(;一)上行 Number of active UEs的测量方法; 该测量量的测量目标可以是小区。
A )对于存在分离 UE的 Macro eNB , 可以不统计 PDCP层位于 Macro eNB而 RLC层 和 MAC层位于 Local eNB的 DRB信息,即仅统计 Macro eNB的上行 Number of active UEs, 包括所有 DRB在 Macro eNB的上行激活 UE的数目以及部分 DRB在 Macro eNB的上行激 活 UE的数目。 在时间 T内统计的上行 Number of active UEs的计算公式如下:
∑N(i, qci)
Vi
M(T, qci, p) =
I(T, p) 其中, 各参数定义如下表
Figure imgf000016_0001
表 7 B )如果需要统计分离到 Local eNB的上行激活 UE的数目, 可由 Local eNB的 MAC 层进行统计, 并将结果上艮给 Macro eNB或 OAM。
统计方式与 A )类似, 不同的是参数来自 Local eNB的 MAC。
如果需要上报给 Macro eNB , 通过 Macro eNB与 Local eNB之间的接口将结果上报给 Macro eNB , 其中可以包含 UE的标识列表信息, 从而使 Macro eNB进一步汇总在 Macro eNB部分 DRB的情况。
对于 PDCP层位于 Local eNB的如图 7所示的架构 2 ,如果需要统计分离到 Local eNB 的上行激活 UE的数目,可由 Local eNB的 MAC层进行统计,并上报给 Macro eNB或 OAM。
(二)下行 Number of active UEs的测量方法;
A )对于存在分离 UE的 Macro eNB , 可以不统计 PDCP层位于 Macro eNB而 RLC层 和 MAC层位于 Local eNB的 DRB信息,即仅统计 Macro eNB的下行 Number of active UEs, 包括所有 DRB在 Macro eNB的下行激活 UE的数据以及部分 DRB在 Macro eNB的下行激 活 UE的数目,对于部分 DRB在 Macro eNB的 UE将仅统计这些 DRB上每个 QCI等级下 对应的下行緩冲区 ( buffer ) (包括 PDCP/RLC/MAC层的 buffer ) 非空的 UE的数目。
在时间 T内统计的下行 Number of active UEs的公式如下:
Figure imgf000017_0001
其中, 各参数定义如下表 8
Figure imgf000017_0003
表 8
B )对于存在分离 UE的 Macro eNB , 所有 DRB在 Macro eNB的下行激活 UE的数目 釆用现有方式统计, 而部分 DRB在 Macro eNB的下行激活 UE的数目, 一方面需要考虑 位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 Buffer (包括 PDCP/RLC/MAC层 的 Buffer ) 的非空情况, 另一方面需要考虑位于 Local eNB的部分 DRB上每个 QCI等级 下对应的 Buffer ( PDCP层的 Buffer ) 的非空情况; 统计的数目之和表示存在分离 UE的 Macro eNB的下行激活 UE的数目。
C ) 与 B ) 不同的是需要统计分离到 Local eNB的下行激活 UE的数目(而不是仅统计 时间 T内每个抽样时刻每个 QCI等级下 PDCP buffer非空的 UE的数目), 可由 Local eNB 统计时间 T内每个抽样时刻每个 QCI等级对应的 buffer (包括 RLC/MAC层的 buffer ) 非 空的 UE的数目, 并上 4艮给 Macro eNB或 OAM。
在时间 T内统计的下行 Number of active UEs的公式如下:
∑N(i, qci)
M(T, qci, p) 其中,
Figure imgf000017_0002
在时机 ζ' , 该 QCI的 DRB在 Local eNB的
N(i, qci)
RLC/MAC层的有下行緩冲数据的 UE的数目。
i 时间 T内, 每 P秒发生一次的取样时刻
P 取样周期
时间 T内取样时刻的总数量
T 统计时间
表 9 在将测量结果上 ·ί艮给 Macro eNB时,通过 Macro eNB与 Local eNB之间的接口将测量 结果上报给 Macro eNB , 其中可以包含 UE的标识列表信息, 从而使 Macro eNB进一步汇 总在 PDCP层计算的激活 UE数目。
对于 PDCP层位于 Local eNB的如图 7所示的架构 2 ,如果需要统计分离到 Local eNB 的激活 UE的数目, 可由 Local eNB按现有技术统计, 并上 4艮给 Macro eNB或 OAM。
实施例四:
packet delay in the DL的测量方法; 该测量量的测量目标可以是终端、 小区或 E-RAB。 对于分离在 Local eNB的 UE,由于 DRB的 PDCP层位于 Macro eNB而 RLC层和 MAC 层位于 Local eNB , 因此在统计 packet delay in the DL测量量时可将到达数据包的时间参考 点设为 RLC 层的上层 SAP ,而成功接收数据包的时间参考点仍设为 MAC层的下层 SAP , 从而由 Local eNB统计分离 DRB的 Packet Delay in the DL per QCI, 并上艮给 Macro eNB 或 OAM。
在时间 T内统计的 packet delay in the DL的公式如下:
Figure imgf000018_0001
其中, 各参数定义如下表 10:
Figure imgf000018_0002
个 PDCP SDU
I(T) 总的 PDCP SDU的数量
τ 统计时间
表 10
Local eNB上报的信息区分不同 QCI等级。
如果测量请求来自 Macro eNB , Macro eNB可以直接使用 Local eNB上 ·ί艮的测量结果, 并将测量结果通知给 Macro eNB的 OAM, 或者 Macro eNB统计一段时间内分离 DRB的
PDCP SDU在 Macro eNB的停留时间, 具体如下式:
tSend(f) - tArrivii)
M(T, qci)
I(T) 其中, 各参数定义如下表 11 :
Figure imgf000019_0001
表 11 然后 Macro eNB合并上述 M值和来自 Local eNB的 QCI等级相同的 packet delay in the DL统计值以及 M-L接口传输时延, 即将三者相加。 最后将合并值作为 Macro上分离 DRB 的 packet delay in the DL测量值并通^ ^给 Macro eNB的 OAM。
对于 PDCP层位于 Local eNB的如图 7所示的架构 2 , 对于分离在 Local eNB的 UE, 统计的时间参考点和成功接收的时间参考点与现有技术同, 从而由 Local eNB 统计分离 DRB的 Packet Delay in the DL per QCI, 并上艮给 Macro eNB或 OAM。
实施例五:
PRB usage的测量方法; 该测量量的测量目标可以是小区。
对于分离在 Loca eNB的 UE, Local eNB可在 MAC层和层一( LI )之间的 SAP上对 该测量量进行测量, 并将测量结果上 4艮给 Macro eNB或自己的 OAM。
PRB usage包括总的 PRB的使用比例( Total PRB usage )和每个 QCI等级下的 PRB的 使用比例 ( PRB usage per traffic class ), Total PRB usage包括上行 Total PRB usage和下行 Total PRB usage; PRB usage per traffic class包括上行 PRB usage per traffic class和下行 PRB usage per traffic class。
上行 Total PRB usage的统计方法为: 统计时间 T内被使用的上行 PRB所占的总的上 行 PRB的比例;
下行 Total PRB usage的统计方法为: 统计时间 T内被使用的下行 PRB所占的总的下 行 PRB的比例;
上行 PRB usage per traffic class的统计方法为: 针对每个 QCI等级分别统计时间 T内 被使用的上行 PRB所占的总的上行 PRB的比例;
下行 PRB usage per traffic class的统计方法为: 针对每个 QCI等级分别统计时间 T内 被使用的下行 PRB所占的总的下行 PRB的比例。
如果测量请求来自 Macro e B, Macro e B可直接使用 Local eNB上 ·ί艮的测量结果作 为 Macro eNB上分离 DRB的 PRB usage值并通知给 Macro eNB的 OAM。
实施例六:
Received Random Access Preambles的测量; 该测量量的测量目标可以是小区。
Local eNB可在 MAC层和 L1之间的 SAP对该测量量进行测量,并将测量结果上 4艮给 Macro eNB或自己的 OAM。
上报信息可以区分为:设定时间内接收到的专用 preamble码的数量和设定时间内接收 到的随机 preamble 码的数量, 而随机 preamble 码的数量可以进一步区分为低取值区 preamble码的数量和高取值区 preamble码的数量两种信息。
参见图 11 , 本发明实施例还提供一种 Local eNB, 该 Local eNB包括:
接收单元 110, 用于接收到测量请求;
测量单元 111 , 用于 #>据该测量请求进行层二测量;
上 4艮单元 112, 用于将层二测量的测量结果上 4艮给发送所述测量请求的处理实体。 其中, 所述接收单元 110和上报单元 112可以是具有收发功能的传输设备, 所述测量 单元 111可以是处理器等设备。
进一步的, 所述测量请求中包含如下信息中的至少一个:
测量标识、 测量目标、 测量量、 测量上 4艮方式;
其中, 所述测量标识用于唯一标识一个测量应用; 所述测量目标指示层二测量所针对 的对象; 所述测量量指示需要测量的内容; 所述测量上报方式指示上报测量结果的方式。
进一步的, 所述层二测量所针对的对象为: 终端, 或演进无线接入承载 E-RAB。 进一步的, 所述上 ·ί艮测量结果的方式为: 立即上 ·ί艮、 或周期性上 ·ί艮、 或事件触发上 4艮。 进一步的,所述测量单元 111进行层二测量时的测量量包括以下测量量中的至少一个: 调度 IP吞吐量 Scheduled IP throughput;
数据丢失率 Data Loss;
激活 UE数目 Number of active Ues;
下行数据包延时 DL Packet delay;
物理资源块 PRB使用比例 PRB usage;
接收随机接入前导 preamble码的数量 Received Random Access Preambks。
进一步的, 所述测量单元 111 用于: 在进行层二测量时的测量量包括 Scheduled IP throughput时, 按照如下方法对 Scheduled IP throughput进行测量:
以媒体接入控制 MAC层的上层业务接入点 SAP为时间参考点,在无线链路控制 RLC 层和 MAC层分别统计设定时间内调度的分组数据聚合协议 PDCP协议数据单元 PDU的数 据量和调度时间, 根据统计的数据量和调度时间得到 Scheduled IP throughput; 或者, 以 MAC层的上层 SAP为时间参考点, 在 MAC层统计设定时间内调度的 PDCP业务 数据单元 SDU的调度时间, 根据统计的调度时间以及宏基站 Macro eNB指示的各 PDCP SDU的实际数据量得到 Scheduled IP throughput
进一步的, 所述测量单元 111用于: 在进行层二测量时的测量量包括 Data Loss时, 按 照如下方法对 Data Loss进行测量:
按照如下方法测量每个业务盾量等级标识 QCI等级的下行丢包率 Packet Discard Rate in the DL per QCI: 以 RLC层的上层 SAP为时间参考点, 统计每个 QCI等级下设定时间内 的由于拥塞导致的 PDCP PDU丢包的丢包率; 和 /或,
按照如下方法测量每个 QCI等级的 Uu口下行丢包率 Packet Uu Loss Rate in the DL per
QCI: 以 RLC层的上层 SAP为时间参考点,统计每个 QCI等级下设定时间内的 Uu接口传 输的 PDCP SDU的丢包率。
进一步的, 所述测量单元 111用于: 在进行层二测量时的测量量包括 Number of active UEs时, 按照如下方法对 Number of active UEs进行测量:
在 MAC层统计设定时间内分离到所述 Local eNB的上行激活终端的数目; 和 /或, 在 MAC层统计设定时间内分离到所述 Local eNB的下行激活终端的数目。
进一步的, 所述上 4艮单元 112还用于:
在将层二测量的测量结果上 ·ί艮给发送所述测量请求的实体时, 还将统计的终端的标识 信息上 4艮给发送所述测量请求的实体。
进一步的, 所述测量单元 111用于: 在进行层二测量时的测量量包括 DL Packet delay 时, 按照如下方法对 DL Packet delay进行测量:
以 RLC层的上层 SAP作为到达数据包的参考点, 将 MAC层的下层 SAP作为成功接 收数据包的参考点, 统计下行 PDCP SDU的传输延时。 进一步的, 所述测量单元 111用于: 在进行层二测量时的测量量包括 PRB usage时, 按照如下方法对 PRB usage进行测量:
在 MAC层和层一之间的 SAP统计设定时间内的 PRB的使用比例。
进一步的,所述测量单元 111用于:在进行层二测量时的测量量包括 Received Random Access Preambles时 , 按照如下方法对 Received Random Access Preambles进行测量:
在 MAC层和层一之间的 SAP统计设定时间内接收的 Preamble码的数目。
进一步的, 发送所述测量请求的实体为: Macro eNB, 或 OAM。
参见图 12, 本发明实施例还提供一种处理设备, 该处理设备包括:
请求单元 120, 用于向 Local eNB发送进行层二测量的测量请求;
接收单元 121 , 用于接收所述 Local eNB上报的、 根据所述测量请求进行层二测量得 到的测量结果;
处理单元 122, 用于对所述测量结果进行处理。
其中, 所述请求单元 120和接收单元 121可以是具有收发功能的传输设备, 所述处理 单元 122可以是处理器等设备。
进一步的, 所述测量请求中包含如下信息中的至少一个:
测量标识、 测量目标、 测量量、 测量上 ·ί艮方式;
其中, 所述测量标识用于唯一标识一个测量应用; 所述测量目标指示层二测量所针对 的对象; 所述测量量指示需要测量的内容; 所述测量上 4艮方式指示上 4艮测量结果的方式。
进一步的, 所述层二测量所针对的对象为: 终端, 或 Local小区, 或终端的数据无线 接入承载 DRB。
进一步的, 所述上 ·ί艮测量结果的方式为: 立即上 ·ί艮、 或周期性上 ·ί艮、 或事件触发上 4艮。 进一步的, 所述测量结果包括对以下测量量中的至少一个测量量的测量结果: 调度 IP吞吐量 Scheduled IP throughput;
数据丢失率 Data Loss;
激活 UE数目 Number of active Ues;
下行数据包延时 DL Packet delay;
物理资源块 PRB使用比例 PRB usage;
接收随机接入 preamble码的数量 Received Random Access Preambks。
进一步的, 所述处理单元 122用于:
在所述测量结果包括对 Packet Discard Rate in the DL per QCI的测量结果、且所述处理 实体为 Macro eNB时, 按照如下公式一针对每个 QCI等级分别统计设定时间内分离 DRB 的 PDCP SDU在 PDCP层的丢失率,将计算得到的丢失率与所述测量结果中相同 QCI对应 的 Packet Discard Rate in the DL per QCI进行合并, 将合并值作为 Macro eNB上分离 DRB 的 Packet Discard Rate in the DL:
Ddisc(T, qci) * \000000
M(T, qci)
N(T, qci)
公式一:
其中, Μ(Γ, qci)为时间 τ内该 QCI的下行丢包率; Ddisc T, qci、为时间 T内该 QCI 没有传递给 Local eNB并丢弃的下行 PDCP SDU的数目; Ν Τ' ^为时间 Τ内进入 PDCP 层的该 QCI的所有 PDCP SDU的数目; 7为统计时间。
进一步的, 所述处理单元 122用于:
在所述测量结果中不包含 Packet Loss Rate in the UL per QCI时,以 PDCP层的上层 SAP 进一步的, 所述处理单元 122用于:
在所述处理实体为 Macro eNB时, 统计设定时间内所有 DRB位于 Macro eNB以及部 分 DRB位于 Macro eNB的上行激活终端的数目; 和 /或,
统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB的下行激 活终端的数目。
进一步的, 所述处理单元 122用于:
按照如下方法统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB的下行激活终端的数目:
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空的终端的数目; 或者,
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空、 且位于 Local eNB的部分 DRB上每个 QCI等级下对应的 PDCP层的下行緩冲区非空 的终端的数目。
进一步的,所述处理单元 122还用于:在接收的测量结果包括上行 Number of active UEs 时, 将接收到的上行 Number of active UEs与统计的上行激活终端的数目进行汇总;
在接收的测量结果包括下行 Number of active UEs时,将接收到的下行 Number of active UEs与统计的下行激活终端的数目进行汇总。
进一步的, 所述处理单元 122用于:
在所述测量结果包括对 DL Packet delay的测量结果、且所述处理实体为 Macro eNB时, 按照如下公式二统计设定时间内分离 DRB的 PDCP SDU在 Macro eNB的停留时间, 将计 算得到的停留时间与所述测量结果中的 DL Packet delay、 Macro eNB与 Local eNB件的接 口传输时延进行合并, 将合并值作为 Macro e B上分离 DRB的 DL Packet delay;
tSend(f) - tArrivii)
M(T, qci) =
/(Γ)
公式二: 其中, M(J, qci)为时间 τ内一个 QCI的 PDCP SDU的停留时间; tArriv 为 PDCP SDUi 到达 PDCP上层 SAP的时间点; 、为 PDCP SDUi发送给 LocaleNB的时间点; (^*为总的 PDCP SDU的数目; 71为统计时间。
进一步的, 进一步包括:
指示单元 123 , 用于在所述处理实体为 Macro eNB时, 在发给 Local eNB的每个下行 PDCP PDU中携带该 PDCP PDU的 PDCP SDU的实际数据量;
对于 Local eNB上 4艮的每个上行 PDCP PDU,向 Local eNB指示该 PDCP PDU的 PDCP SDU的实际数据量。
其中, 所述指示单元 123可以是具有收发功能的传输设备。
综上所述, 本发明实施例提供的方案中, 处理实体向 Local eNB发送进行层二测量的 测量请求, Local eNB在接收到测量请求后, 根据该测量请求进行层二测量, 将层二测量 的测量结果上报给发送所述测量请求的处理实体, 处理实体接收 Local eNB上报的、 根据 测量请求进行层二测量得到的测量结果, 并对所述测量结果进行处理。 可见, 本发明通过 Local eNB的测量上 ·ί艮实现了包括 Local eNB和 Macro eNB的异构网络下进行层二测量的 方法。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种异构网络下的层二测量方法, 其特征在于, 该方法包括:
本地基站 Local eNB在接收到测量请求后, 根据该测量请求进行层二测量; 所述 Local eNB将层二测量的测量结果上 ·ί艮给发送所述测量请求的处理实体。
2、 如权利要求 1 所述的方法, 其特征在于, 所述测量请求中包含如下信息中的至少 一个:
测量标识、 测量目标、 测量量、 测量上 4艮方式;
其中, 所述测量标识用于唯一标识一个测量应用; 所述测量目标指示层二测量所针对 的对象; 所述测量量指示需要测量的内容; 所述测量上 4艮方式指示上 4艮测量结果的方式。
3、 如权利要求 2 所述的方法, 其特征在于, 所述层二测量所针对的对象为: 终端, 或演进无线接入承载 E-RAB , 或小区。
4、 如权利要求 2所述的方法, 其特征在于, 所述上报测量结果的方式为: 立即上报、 或周期性上 ·ί艮、 或事件触发上 ·ί艮。
5、 如权利要求 1-4中任一所述的方法, 其特征在于, 所述 Local eNB进行层二测量时 的测量量包括以下测量量中的至少一个:
调度 IP吞吐量 Scheduled IP throughput;
数据丢失率 Data Loss;
激活终端数目 Number of active Ues;
下行数据包延时 DL Packet delay;
物理资源块 PRB使用比例 PRB usage;
接收随机接入前导 preamble码的数量 Received Random Access Preambks。
6、 如权利要求 5所述的方法, 其特征在于, 在所述 Local eNB进行层二测量时的测量 量包括 Scheduled IP throughput时, 所述 Local eNB对 Scheduled IP throughput进行测量的 方法包括:
所述 Local eNB以媒体接入控制 MAC层的上层业务接入点 SAP为时间参考点, 在无 线链路控制 RLC层和 MAC层分别统计设定时间内调度的分组数据聚合协议 PDCP协议数 据单元 PDU 的数据量和调度时间, 根据统计的数据量和调度时间得到 Scheduled IP throughput; 或者,
所述 Local eNB以 MAC层的上层 SAP为时间参考点, 在 MAC层统计设定时间内调 度的 PDCP业务数据单元 SDU的调度时间, 根据统计的调度时间以及宏基站 Macro eNB 指示的各 PDCP SDU的实际数据量得到 Scheduled IP throughput
7、 如权利要求 5所述的方法, 其特征在于, 在所述 Local eNB进行层二测量时的测量 量包括 Data Loss时, 所述 Local eNB对 Data Loss进行测量的方法包括: 按照如下方法测量每个业务盾量等级标识 QCI等级的下行丢包率 Packet Discard Rate in the DL per QCI: 以 RLC层的上层 SAP为时间参考点, 统计每个 QCI等级下设定时间内 的由于拥塞导致 PDCP PDU丢包的丢包率; 和 /或,
按照如下方法测量每个 QCI等级的 Uu口下行丢包率 Packet Uu Loss Rate in the DL per QCI: 以 RLC层的上层 SAP为时间参考点,统计每个 QCI等级下设定时间内的 Uu接口传 输的 PDCP SDU的丢包率。
8、 如权利要求 5所述的方法, 其特征在于, 在所述 Local eNB进行层二测量时的测量 量包括 Number of active UEs时, 所述 Local eNB对 Number of active UEs进行测量的方法 包括:
所述 Local eNB在 MAC层统计设定时间内分离到所述 Local eNB的上行激活终端的 数目; 和 /或,
所述 Local eNB在 MAC层统计设定时间内分离到所述 Local eNB的下行激活终端的 数目。
9、 如权利要求 8所述的方法, 其特征在于, 在所述 Local eNB将层二测量的测量结果 上 ·ί艮给发送所述测量请求的处理实体时, 还将统计的终端的标识信息上 ·ί艮给发送所述测量 请求的处理实体。
10、 如权利要求 5所述的方法, 其特征在于, 在所述 Local eNB进行层二测量时的测 量量包括 DL Packet delay时, 所述 Local eNB对 DL Packet delay进行测量的方法包括: 所述 Local eNB以 RLC层的上层 SAP作为到达数据包的时间参考点,将 MAC层的下 层 SAP作为成功接收数据包的时间参考点, 统计下行 PDCP SDU的传输延时。
11、 如权利要求 5所述的方法, 其特征在于, 在所述 Local eNB进行层二测量时的测 量量包括 PRB usage时, 所述 Local eNB对 PRB usage进行测量的方法包括:
所述 Local eNB在 MAC层和层一之间的 SAP统计设定时间内的 PRB的使用比例。
12、 如权利要求 5所述的方法, 其特征在于, 在所述 Local eNB进行层二测量时的测 量量包括 Received Random Access Preambles时 ,所述 Local eNB对 Received Random Access
Preambles进行测量的方法包括:
所述 Local eNB在 MAC层和层一之间的 SAP统计设定时间内接收的 Preamble码的数 目。
13、 如权利要求 1-12中任一所述的方法, 其特征在于, 发送所述测量请求的处理实体 为:
宏基站 Macro eNB , 或维护与管理实体 OAM。
14、 一种异构网络下的层二测量结果处理方法, 其特征在于, 该方法包括: 处理实体向 Local eNB发送进行层二测量的测量请求; 处理实体接收所述 Local eNB上报的、 根据所述测量请求进行层二测量得到的测量结 果;
处理实体对所述测量结果进行处理。
15、 如权利要求 14 所述的方法, 其特征在于, 所述测量请求中包含如下信息中的至 少一个:
测量标识、 测量目标、 测量量、 测量上 4艮方式;
其中, 所述测量标识用于唯一标识一个测量应用; 所述测量目标指示层二测量所针对 的对象; 所述测量量指示需要测量的内容; 所述测量上 4艮方式指示上 4艮测量结果的方式。
16、 如权利要求 15所述的方法, 其特征在于, 所述层二测量所针对的对象为: 终端, 或小区, 或终端的数据无线接入承载 DRB。
17、 如权利要求 15 所述的方法, 其特征在于, 所述上报测量结果的方式为: 立即上 报、 或周期性上报、 或事件触发上报。
18、 如权利要求 14-17中任一所述的方法, 其特征在于, 所述测量结果包括对以下测 量量中的至少一个测量量的测量结果:
调度 IP吞吐量 Scheduled IP throughput;
数据丢失率 Data Loss;
激活 UE数目 Number of active Ues;
下行数据包延时 DL Packet delay;
物理资源块 PRB使用比例 PRB usage;
接收随机接入 preamble码的数量 Received Random Access Preambks。
19、 如权利要求 18所述的方法, 其特征在于, 在所述测量结果包括对 Packet Discard Rate in the DL per QCI的测量结果、 且所述处理实体为 Macro eNB时, 所述处理实体对所 述测量结果进行处理具体包括:
按照如下公式一针对每个 QCI等级分别统计设定时间内分离 DRB的 PDCP SDU在 PDCP层的丢失率,将计算得到的丢失率与所述测量结果中相同 QCI对应的 Packet Discard Rate in the DL per QCI进行合并, 将合并值作为 Macro eNB上分离 DRB的 Packet Discard Rate in the DL:
Ddisc(T, qci) * 1000000
M(T, qci) =
N(T, qci)
公式一:
其中, Μ(Γ, qci)为时间 τ内该 QCI的下行丢包率; Ddisc T, 为时间 T内该 QCI 没有传递给 Local eNB并丢弃的下行 PDCP SDU的数目; Ν Τ' ^为时间 Τ内进入 PDCP 层的该 QCI的所有 PDCP SDU的数目; 7为统计时间。
20、如权利要求 18所述的方法,其特征在于,在所述测量结果中不包含 Packet Loss Rate in the UL per QCI时, 所述处理实体对所述测量结果进行处理包括:
所述 Macro eNB以 PDCP层的上层 SAP为时间参考点, 在 PDCP层统计每个 QCI下 设定时间内的上行 PDCP SDU的丢包率。
21、 如权利要求 18所述的方法, 其特征在于, 在所述处理实体为 Macro eNB时, 进 一步包括:
Macro eNB统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB 的上行激活终端的数目; 和 /或,
Macro eNB统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB 的下行激活终端的数目。
22、 如权利要求 21所述的方法, 其特征在于, 所述 Macro eNB统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB的下行激活终端的数目, 具体包括: 统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空的终端的数目; 或者,
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空、 且位于 Local eNB的部分 DRB上每个 QCI等级下对应的 PDCP层的下行緩冲区非空 的终端的数目。
23、 如权利要求 21所述的方法, 其特征在于, 在接收的测量结果包括上行 Number of active UEs时, 所述处理实体对所述测量结果进行处理包括: Macro eNB将接收到的上行 Number of active UEs与统计的上行激活终端的数目进行汇总;
在接收的测量结果包括下行 Number of active UEs时,所述处理实体对所述测量结果进 行处理包括: Macro eNB将接收到的下行 Number of active UEs与统计的下行激活终端的数 目进行汇总。
24、 如权利要求 18所述的方法, 其特征在于, 在所述测量结果包括对 DL Packet delay 的测量结果、 且所述处理实体为 Macro eNB时, 所述处理实体对所述测量结果进行处理具 体包括:
按照如下公式二统计设定时间内分离 DRB的 PDCP SDU在 Macro eNB的停留时间, 将计算得到的停留时间与所述测量结果中的 DL Packet delay、 Macro eNB与 Local eNB件 的接口传输时延进行合并, 将合并值作为 Macro eNB上分离 DRB的 DL Packet delay;
Figure imgf000030_0001
其中, M(J, qci)为时间 τ内一个 QCI的 PDCP SDU的停留时间; tArriv 为 PDCP SDUi 到达 PDCP上层 SAP的时间点; 、为 PDCP SDUi发送给 LocaleNB的时间点; 为总的 PDCP SDU的数目; 71为统计时间。
25、 如权利要求 14所述的方法, 其特征在于, 进一步包括:
在所述处理实体为 Macro e B时, Macro e B在发给 Local eNB的每个下行 PDCP PDU 中携带该 PDCP PDU的 PDCP SDU的实际数据量;
Macro eNB对于 Local eNB上 4艮的每个上行 PDCP PDU, 向 Local eNB指示该 PDCP PDU的 PDCP SDU的实际数据量。
26、 一种 Local eNB , 其特征在于, 该 Local eNB包括:
接收单元, 用于接收测量请求;
测量单元, 用于根据该测量请求进行层二测量;
上 4艮单元, 用于将层二测量的测量结果上 4艮给发送所述测量请求的处理实体。
27、 如权利要求 26所述的 Local eNB , 其特征在于, 所述测量请求中包含如下信息中 的至少一个:
测量标识、 测量目标、 测量量、 测量上 ·ί艮方式;
其中, 所述测量标识用于唯一标识一个测量应用; 所述测量目标指示层二测量所针对 的对象; 所述测量量指示需要测量的内容; 所述测量上 4艮方式指示上 4艮测量结果的方式。
28、 如权利要求 27所述的 Local eNB , 其特征在于, 所述层二测量所针对的对象为: 终端, 或演进无线接入承载 E-RAB , 或小区。
29、 如权利要求 27所述的 Local eNB , 其特征在于, 所述上报测量结果的方式为: 立 即上 ·ί艮、 或周期性上 ·ί艮、 或事件触发上 ·ί艮。
30、如权利要求 26-29中任一所述的 Local eNB , 其特征在于, 所述测量单元进行层二 测量时的测量量包括以下测量量中的至少一个:
调度 IP吞吐量 Scheduled IP throughput;
数据丢失率 Data Loss;
激活 UE数目 Number of active Ues;
下行数据包延时 DL Packet delay;
物理资源块 PRB使用比例 PRB usage;
接 <j欠随机接入前导 preamble码的数量 Received Random Access Preambles 0
31、 如权利要求 30所述的 Local eNB , 其特征在于, 所述测量单元用于: 在进行层二 测量时的测量量包括 Scheduled IP throughput时, 按照如下方法对 Scheduled IP throughput 进行测量:
以媒体接入控制 MAC层的上层业务接入点 SAP为时间参考点,在无线链路控制 RLC 层和 MAC层分别统计设定时间内调度的分组数据聚合协议 PDCP协议数据单元 PDU的数 据量和调度时间, 根据统计的数据量和调度时间得到 Scheduled IP throughput; 或者, 以 MAC层的上层 SAP为时间参考点, 在 MAC层统计设定时间内调度的 PDCP业务 数据单元 SDU的调度时间, 根据统计的调度时间以及宏基站 Macro eNB指示的各 PDCP SDU的实际数据量得到 Scheduled IP throughput
32、 如权利要求 30所述的 Local eNB, 其特征在于, 所述测量单元用于: 在进行层二 测量时的测量量包括 Data Loss时, 按照如下方法对 Data Loss进行测量:
按照如下方法测量每个业务盾量等级标识 QCI等级的下行丢包率 Packet Discard Rate in the DL per QCI: 以 RLC层的上层 SAP为时间参考点, 统计每个 QCI等级下设定时间内 的由于拥塞导致的 PDCP PDU丢包的丢包率; 和 /或,
按照如下方法测量每个 QCI等级的 Uu口下行丢包率 Packet Uu Loss Rate in the DL per QCI: 以 RLC层的上层 SAP为时间参考点,统计每个 QCI等级下设定时间内的 Uu接口传 输的 PDCP SDU的丢包率。
33、 如权利要求 30所述的 Local eNB, 其特征在于, 所述测量单元用于: 在进行层二 测量时的测量量包括 Number of active UEs时, 按照如下方法对 Number of active UEs进行 测量:
在 MAC层统计设定时间内分离到所述 Local eNB的上行激活终端的数目; 和 /或, 在 MAC层统计设定时间内分离到所述 Local eNB的下行激活终端的数目。
34、 如权利要求 33所述的 Local eNB, 其特征在于, 所述上报单元还用于: 在将层二测量的测量结果上 ·ί艮给发送所述测量请求的处理实体时, 还将统计的终端的 标识信息上 4艮给发送所述测量请求的处理实体。
35、 如权利要求 30所述的 Local eNB, 其特征在于, 所述测量单元用于: 在进行层二 测量时的测量量包括 DL Packet delay时, 按照如下方法对 DL Packet delay进行测量: 以 RLC层的上层 SAP作为到达数据包的参考点, 将 MAC层的下层 SAP作为成功接 收数据包的参考点, 统计下行 PDCP SDU的传输延时。
36、 如权利要求 30所述的 Local eNB, 其特征在于, 所述测量单元用于: 在进行层二 测量时的测量量包括 PRB usage时, 按照如下方法对 PRB usage进行测量:
在 MAC层和层一之间的 SAP统计设定时间内的 PRB的使用比例。
37、 如权利要求 30所述的 Local eNB, 其特征在于, 所述测量单元用于: 在进行层二 测量时的测量量包括 Received Random Access Preambles 时, 按照如下方法对 Received Random Access Preambles进行测量:
在 MAC层和层一之间的 SAP统计设定时间内接收的 Preamble码的数目。
38、如权利要求 26-37中任一所述的 Local eNB , 其特征在于, 发送所述测量请求的处 理实体为:
宏基站 Macro eNB, 或维护与管理实体 OAM。
39、 一种处理设备, 其特征在于, 该处理设备包括:
请求单元, 用于向 Local eNB发送进行层二测量的测量请求;
接收单元, 用于接收所述 Local eNB上报的、 根据所述测量请求进行层二测量得到的 测量结果;
处理单元, 用于对所述测量结果进行处理。
40、 如权利要求 39 所述的处理设备, 其特征在于, 所述测量请求中包含如下信息中 的至少一个:
测量标识、 测量目标、 测量量、 测量上 4艮方式;
其中, 所述测量标识用于唯一标识一个测量应用; 所述测量目标指示层二测量所针对 的对象; 所述测量量指示需要测量的内容; 所述测量上报方式指示上报测量结果的方式。
41、 如权利要求 40 所述的处理设备, 其特征在于, 所述层二测量所针对的对象为: 终端, 或小区, 或终端的数据无线接入承载 DRB。
42、 如权利要求 40 所述的处理设备, 其特征在于, 所述上报测量结果的方式为: 立 即上 ·ί艮、 或周期性上 ·ί艮、 或事件触发上 ·ί艮。
43、 如权利要求 39-42中任一所述的处理设备, 其特征在于, 所述测量结果包括对以 下测量量中的至少一个测量量的测量结果:
调度 IP吞吐量 Scheduled IP throughput;
数据丢失率 Data Loss;
激活 UE数目 Number of active Ues;
下行数据包延时 DL Packet delay;
物理资源块 PRB使用比例 PRB usage;
接收随机接入 preamble码的数量 Received Random Access Preambks。
44、 如权利要求 43所述的处理设备, 其特征在于, 所述处理单元用于:
在所述测量结果包括对 Packet Discard Rate in the DL per QCI的测量结果、且所述处理 实体为 Macro eNB时, 按照如下公式一针对每个 QCI等级分别统计设定时间内分离 DRB 的 PDCP SDU在 PDCP层的丢失率,将计算得到的丢失率与所述测量结果中相同 QCI对应 的 Packet Discard Rate in the DL per QCI进行合并, 将合并值作为 Macro eNB上分离 DRB 的 Packet Discard Rate in the DL:
Figure imgf000033_0001
其中, Μ(Γ, qci)为时间 τ内该 QCI的下行丢包率; Ddisc T, qc >为时间 T内该 QCI 没有传递给 Local eNB并丢弃的下行 PDCP SDU的数目; Ν Τ' ^为时间 Τ内进入 PDCP 层的该 QCI的所有 PDCP SDU的数目; 7为统计时间。
45、 如权利要求 43所述的处理设备, 其特征在于, 所述处理单元用于:
在所述测量结果中不包含 Packet Loss Rate in the UL per QCI时,以 PDCP层的上层 SAP
46、 如权利要求 43所述的处理设备, 其特征在于, 所述处理单元用于:
在所述处理实体为 Macro eNB时, 统计设定时间内所有 DRB位于 Macro eNB以及部 分 DRB位于 Macro eNB的上行激活终端的数目; 和 /或,
统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB的下行激 活终端的数目。
47、 如权利要求 46所述的处理设备, 其特征在于, 所述处理单元用于:
按照如下方法统计设定时间内所有 DRB位于 Macro eNB以及部分 DRB位于 Macro eNB的下行激活终端的数目:
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空的终端的数目; 或者,
统计所有 DRB位于 Macro eNB的数目,以及部分 DRB位于 Macro eNB、且位于 Macro eNB的部分 DRB上每个 QCI等级下对应的 PDCP层或 RLC层或 MAC层的下行緩冲区非 空、 且位于 Local eNB的部分 DRB上每个 QCI等级下对应的 PDCP层的下行緩冲区非空 的终端的数目。
48、 如权利要求 46 所述的处理设备, 其特征在于, 所述处理单元还用于: 在接收的 测量结果包括上行 Number of active UEs时, 将接收到的上行 Number of active UEs与统计 的上行激活终端的数目进行汇总;
在接收的测量结果包括下行 Number of active UEs时,将接收到的下行 Number of active UEs与统计的下行激活终端的数目进行汇总。
49、 如权利要求 43所述的处理设备, 其特征在于, 所述处理单元用于:
在所述测量结果包括对 DL Packet delay的测量结果、且所述处理实体为 Macro eNB时, 按照如下公式二统计设定时间内分离 DRB的 PDCP SDU在 Macro eNB的停留时间, 将计 算得到的停留时间与所述测量结果中的 DL Packet delay、 Macro eNB与 Local eNB件的接 口传输时延进行合并, 将合并值作为 Macro e B上分离 DRB的 DL Packet delay;
Figure imgf000034_0001
其中, M(J, qci)为时间 τ内一个 QCI的 PDCP SDU的停留时间; tArrivW 为 PDCP SDUi 到达 PDCP上层 SAP的时间点; 、为 PDCP SDUi发送给 LocaleNB的时间点; 为总的 PDCP SDU的数目; 71为统计时间。
50、 如权利要求 39所述的处理设备, 其特征在于, 进一步包括:
指示单元,用于在所述处理实体为 Macro eNB时,在发给 Local eNB的每个下行 PDCP PDU中携带该 PDCP PDU的 PDCP SDU的实际数据量;
对于 Local eNB上 4艮的每个上行 PDCP PDU,向 Local eNB指示该 PDCP PDU的 PDCP
SDU的实际数据量。
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