WO2016180154A1

WO2016180154A1 - Method and device for delayed minimization of drive test

Info

Publication number: WO2016180154A1
Application number: PCT/CN2016/079315
Authority: WO
Inventors: 李大鹏
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-08-05
Filing date: 2016-04-14
Publication date: 2016-11-17
Also published as: CN106454921A

Abstract

A method and device for delayed minimization of drive test. The method comprises: acquiring terminal-side delay measurement information and network-side delay measurement information, where both the terminal-side delay measurement information and the network-side measurement information comprise association indication information; and processing the terminal-side delay measurement information and the network-side delay measurement information on the basis of the association indication to produce delayed minimization of drive test information.

Description

Delayed minimization road test method and device

Technical field

This document relates to, but is not limited to, the field of communications, and in particular, to a method and apparatus for minimizing path measurement of time delay.

Background technique

In order to reduce the cost and complexity of operators using manual devices for manual road test, 3GPP (Third Generation Partnership Projects) includes Node B (base station) and RNC (Radio Network Controller). UTRAN (Universal Terrestrial Radio Access Network) and Release-10 (Evolved Universal Terrestrial Radio Access Network) including eNB (Evolved Base Station) Version 10) began to introduce the MDT (Minimization of Drive Test) function. The CN (Core Network) corresponding to the UTRAN includes an HSS (Home Subscriber Server), an MSC (Mobile Switching Centre) Server, and a SGSN (Serving General Packet Radio Service Support Node). General Packet Radio Service GPRS Support Node) and so on. The core network CN corresponding to the E-UTRAN includes a home subscriber server, an MME (Mobile Management Entity), and the like. Minimize the drive test function. The user equipment (user equipment or terminal) automatically collects measurement information and reports it to the RAN (Radio Access Network) through Control Plane (control plane). The RNC, for the E-UTRAN system, refers to the eNB, and then reports to the OCE (Operation And Maintenance, Operation and Maintenance System) TCE (Trace Collection Entity) through the radio access network for network optimization, for example, discovery and resolution. Network coverage issues.

The MDT functions are classified into Management based MDT (Management Based MDT) and Signaling based MDT (Signaling Based MDT). The management process of the MDT based on the management is usually (in the case of the E-UTRAN system, the following is the same). The OAM (or the network management system) sends a Trace session activation (tracking activation message) including the MDT configuration to the eNB, and the eNB specifies in the message. Area Select an appropriate UE in the (area) and send the MDT configuration information to the selected UE. The signaling process-based MDT activation process is performed by the OAM transmitting the Trace session activation including the MDT configuration to the HSS to activate the MDT measurement of the designated UE, and the HSS sends the MDT configuration information of the UE to the MME, and the MME sets the MDT configuration information of the UE. The eNB sends the MDT configuration information to the UE. Signaling-based MDT usually uses IMSI (International Mobile Subscriber Identity) or IMEI (International Mobile Station Equipment Identity) to specify a certain UE, or add area information to limit UE selection. . The management-based MDT and signaling-based tracking activation message includes Trace Reference information from OAM, including PLMN (Public Land Mobile Network) information, by MCC (Mobile country code, mobile) Country code) and MNC (Mobile Network code).

The MDT function can be divided into two working modes according to its working in idle state and working in connected state, specifically "Logged MDT" and "immediate MDT". Recording minimized drive test means that the UE is in the radio resource control idle state (refer to the RRC_IDLE state for the E-UTRAN system; and includes the CELL_PCH (cell_paging channel) state and the URA_PCH (UTRAN registration zone_paging channel) state for the UTRAN system) When the configured conditions are met, the relevant measurement information is collected and stored for reporting when the RAN command is received in the future. After receiving the data, the RAN aggregates or directly forwards the data to the TCE. Immediately minimizing the drive test means that the UE collects relevant measurement information in the RRC connection state (for the E-UTRAN system refers to the RRC_CONNECTED state; for the UTRAN system refers to the CELL_DCH (Cell_Dedicated Channel) state) and actively reports when the report satisfies the reporting condition Uploaded to the RAN, the RAN receives the report, summarizes or directly passes the report to the TCE.

The goal of MDT measurements is to provide data analysis network performance. MDT measurements are used to identify key aspects of network performance impact and to see if it is necessary to adjust network configuration parameters or network expansion. This function can be used to detect whether the QoE (Quality of Experience) of the UE meets the requirements of network planning. In the related art, manual road test also has measurement work, but the cost of manual road test is high, and some specific areas cannot be fully measured by manual road test. Therefore, the MDT measurement uses a certain number of UEs to report the measured data when using the service, and provides the operator with statistically significant measurement data.

The MDT measurement configuration process can be further divided into two methods: immediate minimization of drive test and record minimization of drive test. In the record minimization drive test, when the terminal is in the connected state, the base station sends the MDT configuration to the terminal, and the terminal starts the MDT measurement when entering the idle state, and notifies the base station to have the measurement data when the connection state is re-entered, and the base station indicates the data indication information. Get measurement records. For an immediate minimization of the drive test procedure, the base station uses the radio resource management measurement process of the related art.

In addition to minimizing the road test and recording minimization road test, the MDT measurement configuration process can also perform the connection state minimization drive test. When the terminal is in the connected state, the base station passes the RRC (Radio Resource Control). The message sends the MDT configuration to the terminal, and the terminal performs MDT measurement, and records the result in the terminal, waiting for the base station to acquire through RRC signaling. When the terminal switches to another base station, if the measurement record is not acquired by the base station that was measured at the time, it can also be acquired by other non-measurement base stations and finally sent to the device of the measurement report collection.

However, in the related art, the terminal cannot provide a minimum drive test for delay.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a method and a device for minimizing the path measurement of the delay, which can solve the problem that the terminal cannot provide the minimum drive test measurement for the delay in the related art.

The embodiments of the present invention provide the following technical solutions:

A method of minimizing road test for delay, comprising:

Obtaining terminal side delay measurement information and network side delay measurement information, where the terminal side delay measurement information and the network side delay measurement information both include association indication information;

And processing, according to the association indication information, the terminal side delay measurement information and the network side delay measurement information to obtain a minimum delay path test information of the delay.

Optionally, the association indication information includes one or a combination of: a tracking reference value, a tracking record session reference value, an absolute time value, a terminal number, and an enhanced radio access bearer number E-RAB ID.

Optionally, the terminal side delay measurement includes terminal side uplink delay measurement and/or terminal side downlink. Delay measurement

The start time of the terminal side uplink delay is the time when the service data unit SDU of the packet data convergence protocol PDCP message is received by the terminal side PDCP layer, and the deadline of the terminal side uplink delay is the first wireless chain of the PDCP message. The time at which the RLC layer fragment is processed;

The start time of the downlink delay of the terminal side is the time when the first RLC layer fragment of the network side PDCP packet is received by the network side PDCP layer, and the deadline of the downlink side delay of the terminal side is the PDCP packet sent to the terminal side PDCP. High-level time.

Optionally, the terminal side uplink delay is obtained by any one of the following methods:

Method 1: The deadline for the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the obtained difference is used as the uplink delay of the terminal side; the deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the terminal side MAC layer, and the start time of the PDCP message is the time when the SDU of the PDCP message is received by the terminal side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the terminal side PDCP layer, the first timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer, Setting a second timestamp as the processing time; the network side calculates a difference between the time indicated by the first timestamp and the second timestamp, and uses the calculated difference as the terminal side uplink delay .

Optionally, the terminal side downlink delay is obtained by any one of the following methods:

Method 1: The terminal side records the time when the first RLC layer fragment of the PDCP packet transmitted in the hybrid automatic repeat request HARQ arrives and the time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the terminal side. The difference between the two times recorded on the terminal side is obtained, and the downlink delay of the terminal side is obtained;

Method 2: The network side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, the timestamp is set to the processing time, and the terminal side is The current time is recorded when the complete PDCP packet is delivered to the PDCP upper layer of the terminal side, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated. Said terminal side downlink delay;

Method 3: The network side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the network side, the timestamp is set to the received time, and the terminal side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer of the terminal side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated, and the terminal side downlink delay is obtained.

Optionally, the method for minimizing the path measurement of the delay further includes:

The method used by the terminal side and/or the network side to perform terminal side downlink delay measurement is notified.

Optionally, the terminal side delay measurement information includes one or a combination of the following information:

The average value of the delay on the terminal side, and the average value of the delay on the terminal side is the average value of all message delays in the measurement period;

The absolute value of the delay on the terminal side, and the absolute value of the delay on the terminal side is the delay value of all the packets in the measurement period;

An abnormal value of the terminal side delay, where the abnormal value of the terminal side delay is a value of a delay exceeding a preset first threshold in a measurement period and/or a value of a delay exceeding the first threshold.

Optionally, the network side delay measurement includes network side uplink delay measurement and/or network side downlink delay measurement;

The start time of the uplink delay of the network side is the time when the first RLC layer fragment corresponding to the terminal side PDCP packet is received by the PDCP layer on the terminal side, and the deadline of the uplink delay of the network side is the PDCP packet sent to the network side. The time of the PDCP high-level;

The start time of the downlink delay of the network side is the time when the SDU of the PDCP packet is received by the PDCP layer on the network side, and the deadline of the downlink delay of the network side is the SDU of the first RLC layer of the PDCP packet is placed in the RLC layer. The time in the protocol data unit PDU.

Optionally, the network side uplink delay is obtained by any one of the following methods:

Method 1: The network side records the time when the first RLC layer fragment of the PDCP packet transmitted in the HARQ arrives and the time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the network side, and calculates the network side record. The time difference between the two times, the network side uplink delay is obtained;

Method 2: The terminal side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer, the timestamp is set to the processing time, and the network side is When the complete PDCP packet is delivered to the PDCP upper layer on the network side in sequence, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated. The network side uplink delay;

Method 3: The terminal side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the terminal side, the timestamp is set to the received time, and the network side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer on the network side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated, and the network side uplink delay is obtained. .

The method used by the terminal side and/or the network side to perform network side uplink delay measurement is notified.

Optionally, the network side downlink delay is obtained by the following method:

Method 1: The cut-off time of the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the obtained difference is used as the downlink delay of the network side; the deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the network side MAC layer, and the start time of the PDCP packet is the time when the SDU of the PDCP packet is received by the network side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the network side PDCP layer, the third timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, The fourth timestamp is set as the processing time, and the terminal side calculates a difference between the time indicated by the third timestamp and the fourth timestamp as the network side downlink delay.

Determining the time of the recorded PDCP packet by the time of the multiple timestamps of the recorded PDCP packet, and the difference is obtained as the downlink delay of the network side; the deadline for the PDCP packet is the The time when the first RLC layer fragment of the PDCP message is processed by the network side MAC layer.

Optionally, the network side delay measurement information includes one or a combination of the following information:

The average of the network side delays, and the average of the network side delays is the average of all message delays in the measurement period;

The absolute value of the network side delay, and the absolute value of the network side delay is a delay value for recording all the messages in the measurement period;

The abnormal value of the network side delay, where the abnormal value of the network side delay is a value of a delay in which the preset second threshold is recorded in the measurement period and/or a delay exceeding the second threshold.

Optionally, the timestamp added in the PDCP message includes one or a combination of: Coordinated Universal Time UTC Time, System Frame Number SFN, and Absolute Time.

Optionally, adding the timestamp in the PDCP packet includes:

If the timestamp is UTC time or absolute time, the UTC time or absolute time is added at the beginning of the measurement, and a relative value to the UTC time of the first message is added in the subsequent message, wherein the relative value passes the number of bits To identify

If the timestamp is SFN, the first to Nth least significant bits LSB of the SFN are carried, where N is an integer greater than or equal to 2.

Notifying the network side and/or the terminal side to perform parameter information of the delay measurement;

The parameter information includes at least one of the following: a measurement trigger time, a content of the terminal side delay measurement information, a content of the network side delay measurement information, and a format of the timestamp.

Optionally, when measuring the uplink delay of the terminal side, if the uplink delay of the network side is measured by using the method 1 or the method 2, the delay information of the terminal side is represented by the delay of waiting for processing by the terminal side, and the network side delay measurement information is used. Transmission delay and network-side processing delay representation over the air interface;

When measuring the uplink delay of the terminal side, if method 3 is used to measure the uplink delay of the network side, the delay information of the terminal side is represented by the delay of waiting for processing by the terminal side, and the information of the network side delay measurement is transmitted by the air interface. Delay and network side processing delay representation.

Optionally, when measuring the downlink delay of the network side, if the downlink delay of the terminal side is measured by using any one of method 1, method 2, and method 3, the delay of the network side delay measurement information waiting for processing through the network side Indicates the delay of the terminal side delay measurement information transmitted through the air interface, and the terminal processing Time delay and network side delay measurement information representation.

Optionally, a time delay minimization drive test device includes an acquisition module and a processing module;

The acquiring module is configured to acquire the terminal side delay measurement information and the network side delay measurement information, where the terminal side delay measurement information and the network side delay measurement information both include association indication information;

The processing module is configured to process the terminal side delay measurement information and the network side delay measurement information according to the association indication information to obtain a minimum delay path test information of the delay.

Optionally, the association indication information is one or a combination of: a tracking reference value, a tracking record session reference value, an absolute time value, a terminal number, and an enhanced radio access bearer number E-RAB ID.

Optionally, the terminal side delay measurement includes uplink and/or downlink delay measurement;

The start time of the terminal side uplink delay is the time that the service data unit SDU of the packet data convergence protocol layer PDCP packet is received by the terminal side PDCP layer, and the deadline of the uplink uplink delay of the terminal is the first wireless chain of the PDCP packet. The time at which the RLC layer fragment is processed;

Method 1: The deadline for the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the difference is used as the uplink delay of the terminal. The deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the terminal side MAC layer, and the start time of the PDCP packet is the time when the SDU of the PDCP packet is received by the terminal side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the terminal side PDCP layer, the first timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer, The second timestamp is set as the processing time; the network side calculates the difference between the time indicated by the first timestamp and the second timestamp, and uses the calculated difference as the terminal side uplink delay.

Method 1: The terminal side records the PDCP message transmitted in the hybrid automatic repeat request HARQ. The time when the first RLC layer fragment arrives and the time when the complete PDCP packet is delivered to the PDCP upper layer of the terminal side, and the difference between the two times recorded by the terminal side is calculated, and the terminal side downlink delay is obtained. ;

Optionally, the time delay minimization driving device further includes:

The first notification module is configured to notify the terminal side and/or the network side to perform the method used by the terminal side downlink delay measurement.

Optionally, the terminal side delay measurement information includes one or a combination of the following:

The start time of the uplink delay of the network side is the time when the first RLC layer fragment corresponding to the PDCP packet of the terminal side is received by the PDCP layer on the terminal side, and the deadline of the uplink delay of the network side is the PDCP. The time when the packet is sent to the PDCP upper layer on the network side;

Optionally, the time delay minimization driving device further includes:

The second notification module is configured to notify the terminal side and/or the network side to perform a method used by the network side uplink delay measurement.

Optionally, the network side downlink delay is obtained by any one of the following methods:

Optionally, the network side delay measurement information includes one or a combination of the following:

Optionally, the timestamp added in the PDCP layer includes one or a combination of: Coordinated Universal Time UTC Time, System Frame Number SFN, and Absolute Time.

Optionally, if the timestamp is a UTC time or an absolute time, adding a UTC time or an absolute time at the beginning of the measurement, and adding a relative value to the UTC time of the first message in the subsequent message, where the relative The value is identified by the number of bits;

Optionally, the time delay minimization driving device further includes:

The third notification module is configured to notify the network side and/or the terminal side to perform parameter measurement of the delay measurement, where the parameter information includes at least one of the following: a measurement trigger time, a content of the terminal side delay measurement information, and a network side delay measurement information. The format of the content and timestamp.

Optionally, when measuring the downlink delay of the network side, if the downlink delay of the terminal side is measured by using any one of method 1, method 2, and method 3, the delay of the network side delay measurement information waiting for processing through the network side It indicates that the delay information of the terminal side delay measurement information is transmitted through the air interface, the delay of the terminal processing, and the network side delay measurement information.

A computer readable storage medium storing computer executable instructions for performing the above method.

The embodiment of the present invention can support the terminal to perform MDT measurement of the delay and report the measurement result to the network. Embodiments of the present invention can support uplink and/or downlink measurements to meet the actual needs of the MDT. Embodiments of the invention may be, but are not limited to, applicable to E-UTRAN and UTRAN systems, and may be, but are not limited to, for management-based MDT and signaling-based MDT.

BRIEF abstract

1 is a flowchart of a method for minimizing a path measurement of a delay according to an embodiment of the present invention;

2 is a flowchart of a method for minimizing a path measurement of delay according to Embodiments 1 to 3 of the present invention;

3 is a flowchart of a method for minimizing a path measurement of a delay according to Embodiment 4 of the present invention;

4 is a flowchart of a method for minimizing a path measurement of a delay according to Embodiment 5 of the present invention;

FIG. 5 is a schematic diagram of a minimum path test device for delay according to an embodiment of the present invention.

Embodiments of the invention

It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 1 is a flowchart of a method for minimizing a path measurement of a delay according to an embodiment of the present invention. The method shown in Figure 1 includes steps 110-120:

Step 110: Obtain terminal-side delay measurement information and network-side delay measurement information, where the terminal-side delay measurement information and the network-side delay measurement information both include association indication information;

Step 120: Process the terminal side delay measurement information and the network side delay measurement information according to the association indication information, to obtain a minimum delay path test information of the delay.

The method provided by the embodiment of the present invention obtains the terminal side delay measurement information and the network side delay measurement information, and processes the two delay measurement information according to the association indication information to obtain a minimum delay measurement result of the delay. It can support the terminal to perform MDT measurement of delay and report the measurement result to the network.

Optionally, the terminal side delay measurement information includes: a terminal side delay measurement result and the associated association indication information, where the network side delay measurement information includes: a network side delay measurement result and a bound thereof Correlation indication information; by associating the terminal-side delay measurement result with the network-side delay measurement result, the transmission delay performance of the service can be obtained by the terminal-side delay measurement result and the network side to which the same association indication information is bound. The delay measurement results are combined for evaluation, wherein the association operation can be performed at the RAN and/or in the network management system (O&M);

The association operation refers to binding the terminal side delay measurement result measurement and the network side delay measurement result in the same measurement to the same association indication information respectively, and the radio access network and/or the network management system according to the association indication. The information links the two parts of the measurements together.

Optionally, the association indication information includes one or a combination of: tracking reference value (traceReference); tracking record session reference value (traceRecordingSessionRef); absolute time value (absolute time); terminal number (UE ID); enhanced wireless connection Enter the bearer number (E-RAB ID).

Optionally, the terminal side delay measurement includes terminal side uplink delay measurement and/or downlink delay measurement; wherein:

The start time of the uplink delay of the terminal side is the time when the SDU (Service Data Unit) of the Packet Data Convergence Protocol (PDCP) packet is received by the PDCP layer on the terminal side, and the deadline is the PDCP packet. One RLC fragment is terminated by the MAC (Media Access Control) layer processing time; the deadline may also be that the SDU of the first RLC (Radio Link Control) layer corresponding to the PDCP packet is placed in the RLC layer. Time in the Data PDU (Protocol Data Unit).

The start time of the terminal side downlink delay is the time when the first RLC layer fragment corresponding to the network side PDCP packet is received by the network side PDCP layer, and the cutoff time is the time when the PDCP message is sent to the terminal side PDCP upper layer.

Method 1: The deadline for the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the difference is used as the uplink delay of the terminal. The deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the terminal side MAC layer, and the start time of the PDCP message is the time when the SDU of the PDCP message is received by the terminal side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the PDCP layer on the terminal side, the first timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the MAC layer, The second timestamp is set as the processing time; the network side calculates the difference between the time indicated by the first timestamp and the second timestamp, and uses the calculated difference as the terminal side uplink delay.

Optionally, the terminal side downlink delay is obtained by using one of the following methods:

Method 1: The terminal side records the arrival time of the first RLC layer fragment of the PDCP packet transmitted in the Hybrid Automatic Repeat ReQuest (HARQ) and transmits the complete PDCP packet to the terminal side in order. The time of the PDCP upper layer is calculated, and the difference between the two times recorded on the terminal side is calculated, and the downlink delay of the terminal side is obtained;

Method 2: The network side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, the timestamp is set to the processing time, and the terminal side is When the complete PDCP packet is delivered to the PDCP upper layer of the terminal side in sequence, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated. The terminal side downlink delay;

Method 3: The network side adds a timestamp to the PDCP packet, and the SDU of the PDCP packet is used by the network. When receiving the PDCP layer on the network side, the timestamp is set to the time of receiving, and the terminal side records the current time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the terminal side, and extracts the timestamp, and calculates The difference between the time recorded by the terminal side and the time indicated by the timestamp is obtained as the downlink delay of the terminal side.

Optionally, the method further includes:

For example, when configuring the MDT measurement, the NMS specifies the measurement method of the downlink delay on the terminal side in the configuration. The network side and the terminal side trigger the corresponding operations according to the configuration.

The terminal side delay measurement information includes one or a combination of the following:

An abnormal value of the terminal side delay, where the abnormal value of the terminal side delay is a value of a delay exceeding a preset first threshold and/or a delay exceeding the first threshold within a measurement period.

The terminal side delay includes the terminal side uplink delay and the terminal side downlink delay; for example, the average value of the terminal side delay includes an average of the terminal side uplink delay and an average of the terminal side downlink delay. value.

The start time of the network-side uplink delay is the time when the first RLC layer fragment corresponding to the terminal-side PDCP packet is received by the terminal-side PDCP layer, and the deadline is the time when the PDCP packet is sent to the network-side PDCP upper layer.

The start time of the downlink delay of the network side is the time when the SDU of the PDCP packet is received by the PDCP layer on the network side, and the deadline is the time when the first RLC layer fragment of the PDCP packet is processed by the network side MAC layer; The time may also be the time when the SDU of the first RLC layer corresponding to the PDCP message is placed in the PDU of the RLC layer.

Optionally, the network side uplink delay is obtained by using one of the following methods:

Method 3: The terminal side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the terminal side, the timestamp is set to the received time, and the network side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer of the network side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated, and the network side uplink time is obtained. Delay.

Optionally, the method further includes:

For example, when configuring the MDT measurement, the NMS indicates the measurement method for performing the uplink delay on the network side in the configuration. The network side and the terminal side trigger the corresponding operations according to the configuration.

Method 1: The network side subtracts the start time of the recorded PDCP packet from the start time of the recorded PDCP packet, and the obtained difference is used as the network side downlink delay; the PDCP packet deadline is the PDCP. The time when the first RLC layer fragment of the packet is processed by the network side MAC layer, and the start time of the PDCP packet is the time when the SDU of the PDCP packet is received by the network side PDCP layer;

The time difference of the recorded PDCP is subtracted from the time of the multiple timestamps of the recorded PDCP packet, and the obtained difference is used as the network side downlink delay; the PDCP packet deadline is the PDCP report. The time when the first RLC layer fragment of the text is processed by the network side MAC layer.

The network side delay measurement result includes one or a combination of the following:

The average value of the network side delay, that is, the average value of all message delays during the measurement period;

The absolute value of the network side delay, in the measurement period, record the delay value of all messages;

An abnormal value of the network side delay, in the measurement period, recording a number of delays exceeding a preset second threshold and a value exceeding a delay of the second threshold;

The network side delay includes the network side uplink delay and the network side downlink delay; for example, the average value of the network side delay includes an average of the network side uplink delay and an average of the network side downlink delay. value.

Optionally, the timestamp added in the PDCP layer includes one or a combination of: UTC (Coordinated Universal Time) time, SFN (System Frame Number), and absolute time.

Optionally, adding a timestamp to the PDCP packet (the network side and/or the terminal side adding a timestamp in the PDCP packet) includes:

When the timestamp is the UTC time or the absolute time, the UTC time or the absolute time may be added at the beginning of the measurement, and the relative value of the UTC time of the first message is added in the subsequent message, and the relative value may use the bit. Number identification. After a certain period of time, for example, 32 milliseconds, 64 milliseconds, etc., the UTC time or absolute time can be transmitted again;

When the timestamp is SFN, the first to Nth LSBs (Least Significant Bits) of the SFN may be carried, where N is an integer greater than or equal to 2, for example, N is 5 or 6.

Optionally, the method further includes:

The parameter information includes at least one of the following: a measurement trigger time, a content of the terminal side delay measurement information, a content of the network side delay measurement information, and a format of the time stamp.

For example, when configuring the MDT measurement on the terminal side, the NMS indicates the measurement trigger time of the network side execution delay in the configuration. The network side and the terminal side perform measurement according to the configured measurement trigger.

The measurement trigger time may be UTC time or absolute time.

The network management system can also configure time delay measurement information, such as average value, absolute value, and the like.

The network management system can also configure the format of the timestamp, such as SFN, UTC time, and the like.

Optionally, the delay of the uplink on the terminal side is measured, and if the uplink delay of the network side is measured by using the method 1 or the method 2, the delay information of the terminal side is represented by a delay of waiting for processing on the terminal side. The network side delay measurement information is represented by an air interface transmission delay and a network side processing delay;

The delay of the uplink on the terminal side is measured. If the uplink delay of the network side is measured by method 3, the delay information of the terminal side is represented by the delay of waiting for processing on the terminal side, and the measurement information of the base station side delay is measured in the air. The delay of interface transmission and the delay representation of network side processing.

Optionally, when measuring the downlink delay of the network side, if the downlink delay of the terminal side is measured by using any one of method 1, method 2, and method 3, the network side delay measurement information passes through the network. The delay of the side waiting processing indicates that the delay information of the terminal side delay measurement information is transmitted through the air interface, the delay of the terminal processing, and the network side delay measurement information.

Using different methods, you can calculate the delay of a certain segment of the transmission process. Different methods calculate the delay of different segments. Then the delay reported finally can be the superposition of the delays of these segments.

The process of the above embodiment is exemplarily described below in connection with signaling and management based, and based on immediate minimization of drive test or management-based minimization of drive test.

Example 1:

This example is used to illustrate the delay-based road test based on signaling MDT, and how the base station implements MDT measurement of uplink delay. In this example, the execution body of the network side MDT measurement is the base station side.

2 is a flow diagram of signaling based MDT triggering and MDT measurements performed by the terminal and base station side. As shown in FIG. 2, the method may include the following processing steps S101-S107:

Step S101: The network management system (EMS) triggers the minimization of the drive test, and sends the minimized drive test configuration. For example, the Trace Session Activation message is sent to the HSS network element, where the message includes the method for triggering the uplink delay measurement of a terminal service, and the method for measuring the uplink delay of the terminal side and the method for measuring the uplink delay of the network side. Perform MDT delay measurement simultaneously with the base station side;

In the measurement requirement configuration of the uplink delay, the terminal side performs the terminal side uplink delay measurement method 1 and the base station side performs the network side uplink delay measurement method 1.

Step S102: After the HSS retrieves the UE to enter the attached state, the HSS sends a minimized drive test configuration message to the core network element where the UE is located.

In the case of an E-UTRAN network, the core network element is the MME; if it is the UTRAN network, the core network element is the SGSN or the MSC server; for example, when the core network element is the MME, the message carrying the MDT configuration is the Update location answer ( Update location response message, wherein the message contains a measurement request that triggers a delay in acquisition;

Step S103: The core network element sends a minimized drive test configuration message to the access network element.

In the case of an E-UTRAN network, the access network element is an eNB, and the message carrying the minimized drive test configuration is an Initial context setup request message, an ERAB setup message or a Trace start. a message; if it is a UTRAN PS domain, the access network element is an RNC, and the message carrying the minimized drive test configuration is a CN invoke Trace message; the message includes a minimized drive test configuration, such as a measurement specified in the configuration. Trigger time.

Step S104: The base station side configures a minimum path test of the terminal delay;

The base station sends an MDT configuration message to the terminal through an RRC message. The message includes an indication of the delay measurement, and includes a method of network side delay measurement, and a measurement trigger time.

The message may be carried in an existing RRC message, for example:

LoggedMeasurementConfiguration message, or a new RRC message.

Step S105: The base station performs a minimum path test measurement according to the configuration execution delay;

After receiving the MDT configuration message in step S103, the base station starts the measurement when the measurement trigger event is detected according to the MDT configuration and ends the measurement when the measurement period ends. The obtained network side delay measurement result is bound to the associated indication information, for example, a tracking reference value.

In this example, the network side uplink delay measurement method is used. The base station side records the arrival time of the first RLC layer fragment of the PDCP packet transmitted in the HARQ, and the complete PDCP packet. The network side uplink delay of the PDCP packet is obtained by the base station side as the network side delay measurement result.

Step S106: The terminal performs a minimum drive test measurement according to the configuration execution delay;

After receiving the MDT configuration message in the step S104, the terminal performs the delay measurement according to the MDT configuration. In this example, the terminal side uplink delay measurement method 1 is adopted, and the terminal starts the uplink delay measurement, and the terminal calculates the SDU of the PDCP packet. The time difference between the start of the PDCP layer on the terminal side (that is, the start time of the PDCP message), the time when the first RLC layer fragment of the packet is processed by the terminal side MAC layer (ie, the cutoff time of the PDCP message), The terminal side uplink delay is used as the terminal side delay measurement result.

According to the network management configuration, the terminal outputs the average value of the delay of the measured service, the abnormal value, and the like according to the measurement period. The terminal can provide these types of measurement results simultaneously according to the network configuration.

Step S107: The base station and the terminal report the MDT measurement result.

The terminal reports the MDT measurement result (that is, the terminal side delay measurement result) to the base station by using a new field of the measurement reporting (measurement report message);

Alternatively, the base station acquires the MDT measurement result of the terminal through the UEInformation process in the connected state.

The base station reports the MDT measurement result of the base station and the terminal to the TCE.

The base station can bind the network side delay measurement result obtained by the base station and the terminal side delay measurement result to the TCE according to the association indication information. Or the TCE binds the terminal side delay measurement result and the network side delay measurement result with the same association indication information according to the association indication information.

The method of the network side uplink delay used in this example is Method 1. The delay of the terminal side waiting for processing can be represented by the terminal side delay measurement result, and the delay of the air interface transmission and the network side processing can be delayed by the network side. The measurement results are indicated.

Example 2:

This example is used to illustrate the delay-based road test based on signaling MDT, and how the base station and the terminal implement the MDT measurement of the uplink delay. In this example, the execution body of the network side MDT measurement is the base station side.

2 is a flow diagram of signaling based MDT triggering and MDT measurements performed by the terminal and base station side. As shown in FIG. 2, the method may include the following processing steps S201-S207:

Step S201: The network management system (EMS) triggers the minimization of the drive test, and sends a minimized drive test configuration message, such as a Trace Session Activation message, to the HSS network element, where the message includes the trigger to obtain the uplink delay measurement requirement of the terminal service and uses the terminal. The first uplink delay measurement method 1 and the network uplink delay measurement method 2, the measurement request terminal and the base station side simultaneously perform MDT delay measurement;

In the measurement requirement configuration of the uplink delay, the terminal side performs the terminal side uplink delay measurement method 1 and the base station side performs the network side uplink delay measurement method as the second method.

Step S202: After the HSS retrieves the UE to enter the attached state, the HSS sends a minimized configuration message to the core network element where the UE is located.

Step S203: The core network element sends a minimized drive test configuration message to the access network element.

Step S204: The base station side configures a minimum path test of the terminal delay;

The message may be carried in an existing RRC message, for example:

LoggedMeasurementConfiguration message, or a new RRC message.

Step S205: The base station performs a minimum path test measurement according to the configuration execution delay;

After receiving the MDT configuration message in step S203, the base station learns the minimum delay of the base station execution. The method of road test measurement is the network side uplink delay measurement method 2.

Therefore, when the base station performs the measurement, the timestamp is removed after the PDCP packet is unpacked, and the base station side calculates the time difference between the timestamp and the timestamp when the complete PDCP packet is sequentially transmitted to the PDCP upper layer, and obtains the network side uplink. Delay, as a network side delay measurement result.

The base station starts the measurement according to the MDT configuration message when the measurement trigger event is detected, and ends the measurement when the measurement period ends, and binds the network side delay measurement result to the associated indication information, for example, the tracking reference value.

Step S206: The terminal performs a minimum drive test measurement according to the configuration execution delay;

After the terminal receives the MDT configuration message in step S204, the terminal performs the delay measurement according to the MDT route test configuration. In this example, the terminal side performs the terminal side uplink delay measurement method one, and the terminal starts the uplink delay measurement, and the terminal calculates The time difference from when the SDU of the PDCP message is received by the terminal side PDCP layer to when the first RLC layer fragment of the PDCP message is processed by the terminal side MAC layer. Thus, the terminal side uplink delay is obtained as a terminal side delay measurement result.

In addition, because the measurement method of the uplink delay performed by the network side is Method 2, the terminal needs to add a timestamp. Therefore, the terminal adds a timestamp to the PDCP packet, and sets the timestamp to the processing time when the first RLC layer fragment corresponding to the PDCP packet is processed.

Step S207: The base station and the terminal report the MDT measurement result.

The network side uplink delay measurement method used in this example is method 2, and the delay of the terminal side waiting for processing can be represented by the terminal side delay measurement result, and when the air interface transmission and the network side processing delay can pass through the network side The measurement results are extended.

Example 3:

2 is a flow diagram of signaling based MDT triggering and MDT measurements performed by the terminal and base station side. As shown in FIG. 2, the method may include the following processing steps S301-S307:

Step S301: The network management system (EMS) triggers the minimization of the drive test, and sends a minimized drive test configuration message, such as a Trace Session Activation message, to the HSS network element, where the message includes the trigger to obtain the uplink delay measurement requirement of the terminal service and uses the terminal. The first uplink delay measurement method 1 and the network side uplink delay measurement method 3, the measurement request terminal and the base station side simultaneously perform MDT delay measurement;

In the measurement requirement configuration of the uplink delay, the terminal side performs the uplink side delay measurement method 1 and the base station side performs the network side uplink delay measurement method as the third method.

Step S302: After the HSS retrieves the UE to enter the attached state, the HSS sends a minimized configuration message to the core network element where the UE is located.

Step S303: The core network element sends a minimized drive test configuration message to the access network element.

Step S304: The base station side configures a minimum path test of the terminal delay;

The message may be carried in an existing RRC message, for example:

LoggedMeasurementConfiguration message, or a new RRC message.

Step S305: The base station performs a minimum path test measurement according to the configuration execution delay;

After the base station receives the MDT configuration message in step S303, the method for minimizing the drive test measurement of the delay performed by the base station is the network side uplink delay measurement method 3.

Therefore, when the base station performs the measurement, the timestamp is taken out after the PDCP message is unpacked, and the base station side calculates the time difference between the time delay and the time delay when the complete PDCP message is sequentially transmitted to the PDCP upper layer, and obtains the network side. The uplink delay is used as the network side delay measurement result.

The base station starts the measurement according to the MDT drive test configuration and starts the measurement when the measurement period ends, and binds the network side delay measurement result to the associated indication information, for example, the tracking reference value.

Step S306: The terminal performs a minimum drive test measurement according to the configuration execution delay;

After receiving the MDT configuration message in the step S304, the terminal performs the delay measurement according to the MDT route test configuration. In this example, the terminal side uplink delay measurement is method 1, the terminal starts the uplink delay measurement, and the terminal will calculate the PDCP. The time difference between when the SDU is received by the terminal side PDCP layer and when the first RLC layer fragment of the message is processed by the terminal side MAC layer. Thus, the terminal side uplink delay is obtained as a terminal side delay measurement result.

In addition, because the measurement method of the uplink delay performed by the network side is Method 3, the terminal is required to add a timestamp. Therefore, the terminal sets a timestamp when the SDU of the PDCP message arrives at the terminal PDCP layer.

Step S307: The base station and the terminal report the MDT measurement result.

Alternatively, the base station obtains the MDT measurement of the terminal by using the UEInformation process in the connected state. Quantity results.

In this example, the network side uplink delay measurement method 3 is used. Therefore, the delay of waiting for processing on the terminal side can be represented by the terminal side delay measurement result, and the delay of transmission on the air interface and the network side can be reduced by the network side delay measurement result. The measurement result of the delay to the terminal side is obtained.

Example 4:

This example is used to illustrate how to implement MDT measurement of downlink delay in minimizing drive test based on managing MDT. In this example, the execution body of the network side MDT measurement is the base station side.

3 is a flow diagram of an MDT function that is a management-based MDT and implements a time delay to minimize the drive mode MDT. As shown in FIG. 3, the method may include the following processing steps S401 to S405:

Step S401: The network management system (EMS) triggers the minimization of the drive test, and sends the configuration request (minimize the drive test configuration message) to the access network network element, for example, the eNB or the RNC through the southbound interface; the message includes the delay Minimize the measurement requirements of drive test;

The measurement requirements include a downlink delay measurement requirement, a terminal downlink delay measurement method, a delay measurement result type, and a timestamp format.

In this example, the downlink delay measurement method performed by the terminal side is the terminal side downlink delay measurement method 3. The downlink delay measurement method performed by the network base station side is the network side downlink delay measurement method 1.

Step S402: The access network element selects an appropriate terminal, and sends an MDT configuration message to the terminal. In this embodiment, based on the managed MDT, the access network eNB or the RNC selects one or more suitable terminals; the access network configures the MDT. The message is sent to the terminal;

The MDT configuration message may use an existing RRC message or a new RRC message, for example, in an E-UTRAN network, which may be RRCConnectionReconfiguration (RRC Connection Reconfiguration). The message may be, for example, an RRC message, which includes a downlink delay measurement request, a terminal downlink delay measurement method, a delay measurement result type, a timestamp format, and a measurement start time.

Step S403: The base station performs a minimum drive test measurement according to the configuration execution delay;

After receiving the MDT configuration message in step S401, the base station learns to use the terminal side downlink delay measurement method 3 and the network side downlink delay measurement method 1.

According to the network side downlink delay measurement method 1, the base station calculates a time difference from when the SDU of the PDCP is received by the base station PDCP layer, and when the first RLC layer fragment of the PDCP packet is processed by the base station MAC layer, thereby calculating the network side. The downlink delay is used as the network side delay measurement result.

In this example, according to the third measurement of the terminal side downlink delay method, the base station needs to cooperate with the timestamp information. The base station sets a timestamp when the SDU of the high-layer PDCP packet on the network side reaches the PDCP layer of the base station.

The base station outputs measurement results, such as average values and or outliers, according to the MDT drive test configuration.

Step S404: The terminal performs a minimum drive test measurement according to the configuration execution delay;

After receiving the MDT configuration message in step S402, the terminal starts downlink delay measurement according to the MDT drive test configuration.

Because the measurement method of the downlink delay performed by the terminal is the terminal-side downlink delay measurement method 3, when the terminal performs the measurement, after the PDCP packet is unpacked, the timestamp is taken out, and the terminal side reports the complete PDCP. When the text is transmitted to the PDCP upper layer in order, the time difference between the time delay and the time delay is calculated, and the downlink delay calculated by the terminal side is obtained.

Step S405: The base station and the terminal report the MDT measurement result. Includes S4051 and S4052.

S4051: The terminal reports the MDT measurement report (including the terminal side delay measurement result) to the base station by using a new field of the measurement reporting (measurement report message);

Alternatively, the base station obtains the MDT measurement of the terminal by using the UEInformation process in the connected state. Volume report.

S4052: The base station reports the MDT measurement report of the base station and the terminal (including the terminal side delay measurement result and the network side delay measurement result) to the TCE.

In this example, the terminal side downlink delay measurement method 3 is used. Therefore, the delay waiting for processing on the network side can be represented by the network side delay measurement result, and the delay of the air interface transmission and the terminal processing can be reduced by the terminal side delay measurement result. The network side delay measurement result is obtained.

Example 5:

This example is used to illustrate the delay-based road test based on signaling MDT, and how the base station implements the calculation of uplink delay. In this example, all delay calculations are performed by the base station (network side), and the terminal only participates in adding timestamps. The method used includes the terminal side uplink delay measurement method 2 and the network side uplink delay measurement method 2.

4 is a flow diagram of signaling based MDT triggering and MDT measurements performed by the terminal and base station side. As shown in FIG. 4, the method may include the following processing steps S501 to S507:

Step S501: The network management system (EMS) triggers the minimization of the drive test, and sends a minimized drive test configuration message, such as a Trace Session Activation message, to the HSS network element, where the message includes the trigger to obtain the uplink delay measurement requirement of the terminal service and uses the terminal. The second uplink delay measurement method 2, and the network uplink delay measurement method 2, the measurement request terminal and the base station side simultaneously perform MDT delay measurement;

In the measurement requirement configuration of the uplink delay, the method for measuring the uplink delay of the terminal to perform the terminal is the second method, and the method for measuring the uplink delay of the network side is the network side uplink delay method 2.

Step S502: After the HSS retrieves the UE into the attached state, the HSS sends a minimized configuration message to the core network element where the UE is located.

Step S503: The core network element sends a minimized drive test configuration message to the access network element.

Step S504: The base station side configures a minimum path test of the terminal delay;

The message may be carried in an existing RRC message, for example:

LoggedMeasurementConfiguration message, or a new RRC message.

Step S505: The terminal performs a minimum drive test measurement according to the configuration execution delay;

After receiving the MDT configuration message in the step S504, the terminal starts the uplink delay measurement according to the MDT route test configuration, because the measurement method of the uplink delay of the terminal is method 2, and the terminal needs to add multiple timestamps for identifying each The delay of different transmission segments. In this example, the terminal can add two timestamps. When the SDU of the PDCP packet reaches the PDCP layer of the terminal, the terminal sets the first timestamp. The first RLC layer corresponding to the PDCP packet is fragmented by the MAC layer of the terminal. When processing, set the second timestamp to the time at this time.

Step S506: The base station performs a minimum path test measurement according to the configuration execution delay;

After receiving the MDT configuration message in step S503, the base station learns that the base station needs to separately calculate the terminal side uplink delay and the network side uplink delay. The measured uplink delay of the UE is measured by the terminal side uplink delay measurement method 2, and the network side uplink delay measurement method is the second method.

Therefore, when the base station performs the measurement, after the PDCP packet is unpacked, the two timestamps are taken out, and the network side calculates and the second time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer. The time difference of the time in the stamp is obtained as the network side uplink delay as the network side delay measurement result.

The base station calculates the time difference between the first timestamp and the second timestamp, and obtains the terminal side uplink delay as the terminal side delay measurement result.

The base station starts the measurement according to the MDT drive test configuration and starts the measurement when the measurement period ends, and binds the terminal side/network side measurement result to the associated indication information, for example, the tracking reference value.

Step S507: The base station reports the MDT measurement result. Includes S5071 and S5072.

The base station reports the MDT measurement report to the TCE, which includes the network side delay measurement result obtained by the base station and the terminal side delay measurement result.

The base station can bind the network side delay measurement result and the terminal side delay measurement result to the TCE according to the association indication information. Or the TCE binds the terminal side delay measurement result and the network side delay measurement result with the same association indication information according to the association indication information.

In this example, the terminal uplink delay measurement method 2 and the network side uplink delay measurement method 2 are respectively used. Therefore, the delay waiting for processing on the terminal side can pass the delay measurement result of the terminal side (the first time stamp and the second time The time difference of the time stamp indicates that the delay of the transmission on the air interface and the network side can be obtained by the network side delay measurement result (the time difference between the time that the PDCP message is submitted to the upper layer on the base station side and the second timestamp).

FIG. 5 is a schematic diagram of a minimum path test device for delay according to an embodiment of the present invention. The device shown in Figure 5 includes:

The obtaining module 501 is configured to acquire the terminal side delay measurement information and the network side delay measurement information, where the terminal side delay measurement information and the network side delay measurement information both include association indication information;

The processing module 502 is configured to process the terminal side delay measurement information and the network side delay measurement information according to the association indication to obtain a minimum delay path test information of the delay.

Optionally, the terminal side delay measurement includes uplink and/or downlink delay measurement; wherein:

Optionally, the downlink delay on the terminal side is obtained by any one of the following methods:

Method 3: The network side adds a timestamp to the PDCP packet, and the SDU of the PDCP packet is used by the network. When receiving the PDCP layer on the network side, the timestamp is set to the time of receiving, and the terminal side records the current time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the terminal side, and extracts the timestamp, and calculates The difference between the time recorded by the terminal side and the time indicated by the timestamp is obtained by the terminal side downlink delay.

Optionally, the device further includes:

Optionally, the network side delay measurement includes network side uplink delay measurement and/or network side downlink delay measurement; wherein:

Method 2: The terminal side adds a timestamp to the PDCP packet, and sets the timestamp to the processing time when the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer. When the network side delivers the complete PDCP packet to the network-side PDCP upper layer in sequence, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated. The value of the network side uplink delay is obtained;

Optionally, the device further includes:

Determining the time of the recorded PDCP packet by the time of the multiple timestamps of the recorded PDCP packet, and the difference is obtained as the downlink delay of the network side; the deadline for the PDCP packet is the The time when the first RLC layer fragment of the PDCP message is processed by the network side MAC layer. Optionally, the network side delay measurement information includes one or a combination of the following:

The average of the network side delays, wherein the average of the network side delays is an average of all message delays in the measurement period;

The absolute value of the network side delay, where the absolute value of the network side delay is a delay value of all messages recorded during the measurement period;

An outlier of the network side delay, wherein the abnormal value of the network side delay is a number of delays that exceed a preset second threshold during a measurement period and/or a value of a delay that exceeds the second threshold .

Optionally, the timestamp added at the PDCP layer (including the timestamp added by the network side and/or the terminal side) includes one or a combination of: Coordinated Universal Time UTC time, system frame number SFN, and absolute time .

Optionally, the device further includes:

The device provided by the embodiment of the present invention acquires the terminal side delay measurement information and the network side delay measurement information, and processes the two delay measurement information according to the association indication information to obtain a delay. Minimize the measurement results of the drive test, which can support the terminal to perform the MDT measurement of the delay and report the measurement result to the network.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The embodiment of the present invention can support the terminal to perform MDT measurement of the delay and report the measurement result to the network. Embodiments of the present invention can support uplink and/or downlink measurements to meet the actual needs of the MDT.

Claims

A method of minimizing road test for delay, comprising:

Obtaining terminal side delay measurement information and network side delay measurement information, where the terminal side delay measurement information and the network side delay measurement information both include association indication information;

And processing, according to the association indication information, the terminal side delay measurement information and the network side delay measurement information to obtain a minimum delay path test information of the delay.
The method of minimizing drive test of time delay according to claim 1, wherein the association indication information comprises one or a combination of: tracking reference value, tracking record session reference value, absolute time value, terminal number, and enhanced wireless connection. Enter the bearer number E-RAB ID.
The method for minimizing the drive of the delay according to claim 1, wherein the terminal side delay measurement comprises terminal side uplink delay measurement and/or terminal side downlink delay measurement;

The start time of the terminal side uplink delay is the time when the service data unit SDU of the packet data convergence protocol PDCP message is received by the terminal side PDCP layer, and the deadline of the terminal side uplink delay is the first wireless chain of the PDCP message. The time at which the RLC layer fragment is processed;

The start time of the downlink delay of the terminal side is the time when the first RLC layer fragment of the network side PDCP packet is received by the network side PDCP layer, and the deadline of the downlink side delay of the terminal side is the PDCP packet sent to the terminal side PDCP. High-level time.
The method for minimizing the drive of the delay according to claim 3, wherein the terminal side uplink delay is obtained by any of the following methods:

Method 1: The deadline for the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the obtained difference is used as the uplink delay of the terminal side; the deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the terminal side MAC layer, and the start time of the PDCP message is the time when the SDU of the PDCP message is received by the terminal side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the PDCP layer on the terminal side, the first timestamp is set as the received time; the first RLC layer fragment corresponding to the PDCP packet is the MAC side of the terminal side. When the layer is processed, the second timestamp is set as the processing time; the network side calculates the difference between the time indicated by the first timestamp and the second timestamp, and uses the calculated difference as the terminal. Side up delay.
The method for minimizing the drive of the delay according to claim 3, wherein the downlink delay of the terminal side is obtained by any one of the following methods:

Method 1: The terminal side records the time when the first RLC layer fragment of the PDCP packet transmitted in the hybrid automatic repeat request HARQ arrives and the time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the terminal side. The difference between the two times recorded on the terminal side is obtained, and the downlink delay of the terminal side is obtained;

Method 2: The network side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, the timestamp is set to the processing time, and the terminal side is The current time is recorded when the complete PDCP packet is delivered to the PDCP upper layer of the terminal side, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated. Said terminal side downlink delay;

Method 3: The network side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the network side, the timestamp is set to the received time, and the terminal side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer of the terminal side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated, and the terminal side downlink delay is obtained.
The method for minimizing the drive of the delay according to claim 5, further comprising:

The method used by the terminal side and/or the network side to perform terminal side downlink delay measurement is notified.
The method for minimizing the drive of the time delay according to any one of claims 3 to 6, wherein the terminal side delay measurement information comprises one or a combination of the following information:

The average value of the delay on the terminal side, and the average value of the delay on the terminal side is the average value of all message delays in the measurement period;

The absolute value of the delay on the terminal side, and the absolute value of the delay on the terminal side is the delay value of all the packets in the measurement period;

An abnormal value of the terminal side delay, where the abnormal value of the terminal side delay is a value of a delay exceeding a preset first threshold in a measurement period and/or a value of a delay exceeding the first threshold.
The method for minimizing the drive of the delay according to claim 1, wherein the network side delay measurement comprises network side uplink delay measurement and/or network side downlink delay measurement;

The start time of the uplink delay of the network side is the time when the first RLC layer fragment corresponding to the terminal side PDCP packet is received by the PDCP layer on the terminal side, and the deadline of the uplink delay of the network side is the PDCP packet sent to the network side. The time of the PDCP high-level;

The start time of the downlink delay of the network side is the time when the SDU of the PDCP packet is received by the PDCP layer on the network side, and the deadline of the downlink delay of the network side is the SDU of the first RLC layer of the PDCP packet is placed in the RLC layer. The time in the protocol data unit PDU.
The method for minimizing the drive of the delay according to claim 8, wherein the network side uplink delay is obtained by any one of the following methods:

Method 1: The network side records the time when the first RLC layer fragment of the PDCP packet transmitted in the HARQ arrives and the time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the network side, and calculates the network side record. The time difference between the two times, the network side uplink delay is obtained;

Method 2: The terminal side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer, the timestamp is set to the processing time, and the network side is When the complete PDCP packet is delivered to the PDCP upper layer on the network side in sequence, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated. The network side uplink delay;

Method 3: The terminal side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the terminal side, the timestamp is set to the received time, and the network side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer on the network side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated, and the network side uplink delay is obtained. .
The method for minimizing the drive of the delay according to claim 9, further comprising:

The method used by the terminal side and/or the network side to perform network side uplink delay measurement is notified.
The method for minimizing the drive of the delay according to claim 8, wherein the network side downlink delay is obtained by the following method:

Method 1: The cut-off time of the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the obtained difference is used as the downlink delay of the network side; the deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the network side MAC layer, and the start time of the PDCP packet is the time when the SDU of the PDCP packet is received by the network side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the network side PDCP layer, the third timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, The fourth timestamp is set as the processing time, and the terminal side calculates a difference between the time indicated by the third timestamp and the fourth timestamp as the network side downlink delay.
The method for minimizing the drive of the delay according to claim 8, wherein the network side downlink delay is obtained by the following method:

Determining the time of the recorded PDCP packet by the time of the multiple timestamps of the recorded PDCP packet, and the difference is obtained as the downlink delay of the network side; the deadline for the PDCP packet is the The time when the first RLC layer fragment of the PDCP message is processed by the network side MAC layer.
The method for minimizing the drive of the delay according to any one of claims 8 to 12, wherein the network side delay measurement information comprises one or a combination of the following information:

The average of the network side delays, and the average of the network side delays is the average of all message delays in the measurement period;

The absolute value of the network side delay, and the absolute value of the network side delay is a delay value for recording all the messages in the measurement period;

The abnormal value of the network side delay, where the abnormal value of the network side delay is a value of a delay in which the preset second threshold is recorded in the measurement period and/or a delay exceeding the second threshold.
The method for minimizing the drive of the delay according to claim 5 or 9, wherein the time stamp added in the PDCP message includes one or a combination of: Coordinated Universal Time UTC time, system frame number SFN, and absolute time. .
The method of minimizing the drive test of the delay according to claim 14, wherein the adding a timestamp in the PDCP message comprises:

If the timestamp is UTC time or absolute time, the UTC time or absolute time is added at the beginning of the measurement, and a relative value to the UTC time of the first message is added in the subsequent message, wherein the relative value passes the number of bits To identify

If the timestamp is SFN, the first to Nth least significant bits LSB of the SFN are carried, where N is an integer greater than or equal to 2.
The method for minimizing the drive of the delay according to claim 1, further comprising:

Notifying the network side and/or the terminal side to perform parameter information of the delay measurement;

The parameter information includes at least one of the following: a measurement trigger time, a content of the terminal side delay measurement information, a content of the network side delay measurement information, and a format of the timestamp.
The method of minimizing the drive of time delay according to claim 9, wherein:

When measuring the uplink delay of the terminal side, if the uplink delay of the network side is measured by method 1 or method 2, the delay information of the terminal side is represented by the delay of waiting for processing by the terminal side, and the network side delay measurement information is transmitted by the air interface. Delay and network-side processing delay representation;

When measuring the uplink delay of the terminal side, if method 3 is used to measure the uplink delay of the network side, the delay information of the terminal side is represented by the delay of waiting for processing by the terminal side, and the information of the network side delay measurement is transmitted by the air interface. Delay and network side processing delay representation.
The method of minimizing the drive of time delay according to claim 5, wherein:

When measuring the delay on the downlink side of the network side, if the downlink delay of the terminal side is measured by using any one of method 1, method 2, and method 3, the network side delay measurement information is represented by the delay of waiting for processing on the network side, and the terminal side The delay measurement information is represented by the delay of the air interface transmission, the delay of the terminal processing, and the network side delay measurement information.
A time delay minimization drive test device includes an acquisition module and a processing module, wherein:

The acquiring module is configured to acquire the terminal side delay measurement information and the network side delay measurement information, where the terminal side delay measurement information and the network side delay measurement information both include association indication information;

The processing module is configured to process the terminal side delay measurement information and the network side delay measurement information according to the association indication information to obtain a minimum delay path test information of the delay.
The time delay minimization drive test device according to claim 19, wherein the association indication information is one or a combination of: a tracking reference value, a tracking record session reference value, an absolute time value, a terminal number, and an enhanced wireless connection. Enter the bearer number E-RAB ID.
The time delay minimization drive test apparatus according to claim 19, wherein the terminal side delay measurement comprises uplink and/or downlink delay measurement;

The start time of the terminal side uplink delay is the time that the service data unit SDU of the packet data convergence protocol layer PDCP packet is received by the terminal side PDCP layer, and the deadline of the uplink uplink delay of the terminal is the first wireless chain of the PDCP packet. The time at which the RLC layer fragment is processed;

The start time of the downlink delay of the terminal side is the time when the first RLC layer fragment of the network side PDCP packet is received by the network side PDCP layer, and the deadline of the downlink side delay of the terminal side is the PDCP packet sent to the terminal side PDCP. High-level time.
The device for minimizing the delay of the delay according to claim 21, wherein the terminal side uplink delay is obtained by any of the following methods:

Method 1: The deadline for the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the difference is used as the uplink delay of the terminal. The deadline for the PDCP packet is the PDCP packet. The time when the first RLC layer fragment is processed by the terminal side MAC layer, and the start time of the PDCP packet is the time when the SDU of the PDCP packet is received by the terminal side PDCP layer;

Method 2: When the SDU of the PDCP packet is received by the terminal side PDCP layer, the first timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer, The second timestamp is set as the processing time; the network side calculates the difference between the time indicated by the first timestamp and the second timestamp, and uses the calculated difference as the terminal side uplink delay.
The device for minimizing the delay of the delay according to claim 21, wherein the terminal side downlink delay is obtained by any of the following methods:

Method 1: The terminal side records the arrival time of the first RLC layer fragment of the PDCP packet transmitted in the hybrid automatic repeat request HARQ and transmits the complete PDCP packet to the terminal side in order. The time of the PDCP upper layer is calculated, and the difference between the two times recorded on the terminal side is calculated to obtain the downlink delay of the terminal side;

Method 2: The network side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, the timestamp is set to the processing time, and the terminal side is The current time is recorded when the complete PDCP packet is delivered to the PDCP upper layer of the terminal side, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated. Said terminal side downlink delay;

Method 3: The network side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the network side, the timestamp is set to the received time, and the terminal side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer of the terminal side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the terminal side and the time indicated by the timestamp is calculated, and the terminal side downlink delay is obtained.
The method of minimizing the drive of the time delay according to claim 23, further comprising:

The first notification module is configured to notify the terminal side and/or the network side to perform the method used by the terminal side downlink delay measurement.
The minimization drive test device according to any one of claims 21 to 24, wherein the terminal side delay measurement information comprises one or a combination of the following:

The average value of the delay on the terminal side, and the average value of the delay on the terminal side is the average value of all message delays in the measurement period;

The absolute value of the delay on the terminal side, and the absolute value of the delay on the terminal side is the delay value of all the packets in the measurement period;

An abnormal value of the terminal side delay, where the abnormal value of the terminal side delay is a value of a delay exceeding a preset first threshold in a measurement period and/or a value of a delay exceeding the first threshold.
The device of claim 19, wherein the network side delay measurement comprises network side uplink delay measurement and/or network side downlink delay measurement;

The start time of the uplink delay of the network side is the time when the first RLC layer fragment corresponding to the PDCP packet of the terminal side is received by the PDCP layer on the terminal side, and the deadline of the uplink delay of the network side is the PDCP. The time when the packet is sent to the PDCP upper layer on the network side;

The start time of the downlink delay of the network side is the time when the SDU of the PDCP packet is received by the PDCP layer on the network side, and the deadline of the downlink delay of the network side is the SDU of the first RLC layer of the PDCP packet is placed in the RLC layer. The time in the protocol data unit PDU.
The device for minimizing the delay of the delay according to claim 26, wherein the network side uplink delay is obtained by any of the following methods:

Method 1: The network side records the time when the first RLC layer fragment of the PDCP packet transmitted in the HARQ arrives and the time when the complete PDCP packet is sequentially transmitted to the PDCP upper layer of the network side, and calculates the network side record. The time difference between the two times, the network side uplink delay is obtained;

Method 2: The terminal side adds a timestamp to the PDCP packet. When the first RLC layer fragment corresponding to the PDCP packet is processed by the terminal side MAC layer, the timestamp is set to the processing time, and the network side is When the complete PDCP packet is delivered to the PDCP upper layer on the network side in sequence, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated. The network side uplink delay;

Method 3: The terminal side adds a timestamp to the PDCP packet. When the SDU of the PDCP packet is received by the PDCP layer on the terminal side, the timestamp is set to the received time, and the network side presses the complete PDCP packet. When the sequence is transmitted to the PDCP upper layer on the network side, the current time is recorded, and the timestamp is extracted, and the difference between the time recorded by the network side and the time indicated by the timestamp is calculated, and the network side uplink delay is obtained. .
The method of minimizing the drive of the time delay according to claim 27, further comprising:

The second notification module is configured to notify the terminal side and/or the network side to perform a method used by the network side uplink delay measurement.
The device for minimizing the delay of the delay according to claim 26, wherein the network side downlink delay is obtained by any of the following methods:

Method 1: The cut-off time of the recorded PDCP packet is subtracted from the start time of the recorded PDCP packet, and the obtained difference is used as the downlink delay of the network side; the deadline for the PDCP packet is the PDCP packet. Time when the first RLC layer fragment is processed by the network side MAC layer, The start time of the PDCP packet is the time when the SDU of the PDCP packet is received by the PDCP layer on the network side;

Method 2: When the SDU of the PDCP packet is received by the network side PDCP layer, the third timestamp is set to the received time; when the first RLC layer fragment corresponding to the PDCP packet is processed by the network side MAC layer, The fourth timestamp is set as the processing time, and the terminal side calculates a difference between the time indicated by the third timestamp and the fourth timestamp as the network side downlink delay.
The time delay minimization drive test device according to claim 26, wherein the network side downlink delay is obtained by the following method:

Determining the time of the recorded PDCP packet by the time of the multiple timestamps of the recorded PDCP packet, and the difference is obtained as the downlink delay of the network side; the deadline for the PDCP packet is the The time when the first RLC layer fragment of the PDCP message is processed by the network side MAC layer.
The device for minimizing the time delay of any one of claims 26 to 30, wherein the network side delay measurement information comprises one or a combination of the following:

The average of the network side delays, and the average of the network side delays is the average of all message delays in the measurement period;

The absolute value of the network side delay, and the absolute value of the network side delay is a delay value for recording all the messages in the measurement period;

The abnormal value of the network side delay, where the abnormal value of the network side delay is a value of a delay in which the preset second threshold is recorded in the measurement period and/or a delay exceeding the second threshold.
The minimized drive test apparatus according to claim 23 or 27, wherein said time stamp added at the PDCP layer comprises one or a combination of: Coordinated Universal Time UTC Time, System Frame Number SFN, and Absolute time.
A time delay minimization drive test apparatus according to claim 32, wherein:

If the timestamp is UTC time or absolute time, the UTC time or absolute time is added at the beginning of the measurement, and a relative value to the UTC time of the first message is added in the subsequent message, wherein the relative value passes the number of bits To identify

If the timestamp is SFN, the first to Nth least significant bits LSB of the SFN are carried, where N is an integer greater than or equal to 2.
The time delay minimization drive test device of claim 19, further comprising:

The third notification module is configured to notify the network side and/or the terminal side to perform parameter measurement of the delay measurement, where the parameter information includes at least one of the following: a measurement trigger time, a content of the terminal side delay measurement information, and a network side delay measurement information. The format of the content and timestamp.
A time delay minimization drive test apparatus according to claim 27, wherein:

When measuring the uplink delay of the terminal side, if the uplink delay of the network side is measured by method 1 or method 2, the delay information of the terminal side is represented by the delay of waiting for processing by the terminal side, and the network side delay measurement information is transmitted by the air interface. Delay and network-side processing delay representation;

When measuring the uplink delay of the terminal side, if method 3 is used to measure the uplink delay of the network side, the delay information of the terminal side is represented by the delay of waiting for processing by the terminal side, and the information of the network side delay measurement is transmitted by the air interface. Delay and network side processing delay representation.
A time delay minimization drive test apparatus according to claim 23, wherein:

When measuring the delay on the downlink side of the network side, if the downlink delay of the terminal side is measured by using any one of method 1, method 2, and method 3, the network side delay measurement information is represented by the delay of waiting for processing on the network side, and the terminal side The delay measurement information is represented by the delay of the air interface transmission, the delay of the terminal processing, and the network side delay measurement information.