CN102611989A

CN102611989A - Method and equipment for minimization of drive tests (MDT)

Info

Publication number: CN102611989A
Application number: CN2012100717975A
Authority: CN
Inventors: 彦楠; 梁靖; 全海洋; 傅婧
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2012-07-25
Anticipated expiration: 2032-03-16
Also published as: CN102611989B

Abstract

The embodiment of the invention discloses a method and equipment for the minimization of drive tests (MDT), which relate to the technical field of wireless communication and are used for ensuring the time continuity and completeness of MDT. In the invention, after the business of a terminal is interrupted, relevant quality of service (QoS) measurement and/or geographical position measurement of MDT are/is continued to be carried out on the terminal according to the configuration information of MDT; and visibly, the scheme ensures the time continuity and completeness of MDT, so that data and theoretical bases are provided for judging the impact of business continuity on the business.

Description

Method and equipment for minimization of drive tests

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a method and an apparatus for minimization of drive tests.

Background

In future mobile communication systems, it is hoped that manual participation in network planning and operation maintenance is reduced by introducing a network self-optimization mechanism, and parameters are automatically optimized by a network according to statistics, so that the construction and operation costs of the network are reduced. In order to reduce the operation and maintenance cost of the network, it is desirable to adopt a network configuration UE reporting method to reduce the manual drive test. On the other hand, it is also desirable to obtain radio measurement information in an area that cannot be reached by ordinary drive tests. For the above reasons, Minimization of Drive Tests (MDT) was introduced.

MDT measurements introduced by Release10 (Release10) of the Long Term Evolution (LTE) system fall into two categories:

immediate mdt (immediate mdt) measurement: and MDT measurement and report of the terminal (UE) in a connection state.

Record mdt (logged mdt) measurement: and the UE carries out MDT measurement in an idle state and reports the MDT measurement in a subsequent connection state. Once the configured trigger condition is met, the measurement results are obtained and stored (log) for reporting to the base station/radio network controller (eNB/RNC) at a later appropriate time.

In the EPS system, the basic granularity of quality of service (QoS) control is EPS Bearer (Bearer), that is, all data flows on the same Bearer will obtain the same QoS guarantee (such as scheduling policy, buffer queue management, link layer configuration, etc.), and different QoS guarantees need different types of EPS bearers to provide. An EPS bearer passes through different network elements and interfaces, including: an S5/S8 interface between a packet data gateway (PGW) to a Serving Gateway (SGW), an S1 interface between SGW to eNB and a Uu interface between eNB to UE. The EPS bearer is mapped to different bottom bearers on each interface, and each network node is responsible for maintaining the identifier of the bottom bearer and the binding relationship between the bottom bearers. Thus, one QoS corresponds to one EPS bearer, and one EPS bearer corresponds to one S5/S8 bearer, S1 bearer, and one radio bearer (DRB), with one-to-one mapping between them.

In the EPS system, the QoS parameters include QoS Class Identifier (QCI), Allocation And Retention Priority (ARP), Guaranteed Bit Rate (GBR), And Maximum Bit Rate (MBR). Wherein:

the QCI comprises indexes such as priority, packet delay and acceptable packet error rate;

the ARP is mainly applied to access control, and determines whether to accept a corresponding Bearer establishment request or not under the condition of resource limitation;

GBR means that the network needs to guarantee the bit rate required by the bearer, and the corresponding bit rate can be maintained even under the condition that the network resources are in shortage.

MBR defines the rate upper limit that GBR Bear can reach under the condition of sufficient resources.

MDT related QoS measurements are introduced in Release11 (Release11), and the measurement quantities currently supported by QoS measurements include:

throughput measurement (Throughput measurement): for the quality of service of the UE, the air interface connection is a bottleneck. This measurement is based on scheduled IP throughput (scheduled IP throughput) in eNB layer 2 measurements, collects traffic per unit time according to collection rules, and requires geographical location information that can be correlated to the UE.

Data volume measurement (Data measurement): the base station side counts the size of the data volume sent and received, associates the geographical position information of the UE, and carries out uplink and downlink statistics respectively.

Existing determined QoS measurements are all made at the network side, and all measurement results need to be associated with the geographical location information of the UE.

The MDT in Release10 uses best effort geographical location information reporting mode. I.e. the UE does not allow triggering geographical location measurements for MDT measurement purposes only. But rather in a "best effort" manner that allows geographical location information to be carried only when the UE itself has measured it and there are just other MDT measurements to report.

The requirement for geographical location information is raised in Release11, and it is necessary to associate the measurement results of all QoS measurements with the geographical location information. The network side may associate the measurement result with the geographical location information reported by the UE, or may associate the measurement result with the geographical location information of the UE obtained by the network side itself through a positioning manner or the like.

In the process of implementing the invention, the inventor finds that the following technical problems exist in the prior art:

the MDT measurement quantity contains a measurement triggered for an Event, such as a serving cell under threshold for Event a2(Event a2), or parameter collection at link failure for radio link failure report (RLF report); but also continuous measurements of UE parameters over a duration of time, such as QoS throughput measurements and data volume measurements.

When this continuous time is interrupted by an event such as a handover, the traffic will no longer be continuous but will be interrupted as a function of the handover activity. Service interruption may have an influence on MDT measurement using a duration measurement method, and there is no scheme for determining MDT measurement behavior when service interruption occurs.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for Minimization of Drive Tests (MDTs), which are used for ensuring the continuous and complete MDTs in time.

A method of minimization of drive tests, MDT, comprising:

the base station reserves MDT configuration information after the service interruption of the terminal;

and the base station continuously performs MDT related QoS measurement and/or geographical position measurement on the terminal according to the MDT configuration information.

A method of minimization of drive tests, MDT, comprising:

after the terminal is in service interruption, storing self MDT configuration information;

and the terminal continues to carry out MDT related QoS measurement and/or geographical position measurement according to the MDT configuration information.

A base station, the base station comprising:

a storage unit, configured to reserve MDT configuration information after a service interruption of a terminal;

and the measuring unit is used for continuously carrying out MDT related QoS measurement and/or geographical position measurement on the terminal according to the MDT configuration information.

A terminal, the terminal comprising:

the storage unit is used for storing the self MDT configuration information after the terminal service is interrupted;

and the measuring unit is used for continuing to carry out MDT related QoS measurement and/or geographical position measurement according to the MDT configuration information.

According to the scheme, after the service of the terminal is interrupted, the MDT related QoS measurement and/or the geographical position measurement are continuously carried out on the terminal according to the MDT configuration information, so that the scheme ensures the continuity and the completeness of the MDT in time and provides a data theoretical basis for judging the influence of the service interruption on the service.

Drawings

FIG. 1 is a schematic flow chart of a method provided by an embodiment of the present invention;

FIG. 2 is a schematic flow chart of another method provided by the embodiment of the present invention;

fig. 3a is a schematic diagram of a terminal performing intra-base station intra-cell handover in an embodiment of the present invention;

FIG. 3b is a diagram illustrating a terminal performing inter-cell handover in a base station according to an embodiment of the present invention;

fig. 3c is a schematic diagram of inter-base station handover performed by the terminal in the embodiment of the present invention;

FIG. 3d is a schematic diagram illustrating a time relationship between a measurement period and a service interruption in the embodiment of the present invention;

FIG. 3e is a schematic diagram illustrating another time relationship between a measurement period and a service interruption in the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another apparatus according to an embodiment of the present invention.

Detailed Description

In order to ensure continuous and complete MDT in time, an embodiment of the present invention provides an MDT method, where after a service interruption of a terminal, the terminal continues to perform MDT-related QoS measurement and/or geographical location measurement according to MDT configuration information.

Referring to fig. 1, an embodiment of the present invention is directed to an MDT method provided by a base station side, and includes the following steps:

step 10: the base station reserves MDT configuration information after the service interruption of the terminal;

step 11: and the base station continuously performs MDT related QoS measurement and/or geographical position measurement on the terminal according to the MDT configuration information.

Referring to fig. 2, the MDT method for the terminal side according to the embodiment of the present invention includes the following steps:

step 20: after the terminal is in service interruption, storing self MDT configuration information;

step 21: and the terminal continues to carry out MDT related QoS measurement and/or geographical position measurement according to the MDT configuration information.

The first embodiment is as follows:

in this embodiment, the MDT-related QoS measurement is performed on the base station side, the geographical location measurement is performed on the terminal side, and the cause of the service interruption is that the terminal performs intra-base-station intra-cell handover, Radio Resource Control (RRC) connection reestablishment, or Radio Link Failure (RLF).

For the base station side:

the method comprises the following steps: after the service of the terminal is interrupted, the base station reserves the MDT configuration information and continues to carry out MDT related QoS measurement on the terminal according to the MDT configuration information;

step two: the base station associates the geographical position information which is reported by the terminal and is measured in the measuring period in which the service interruption occurs with the measuring result of MDT related QoS measurement carried out by the base station in the measuring period, and reports the associated result to a tracking result collecting entity (TCE); the base station may add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

For the terminal side:

and after the service is interrupted, the terminal stores the self MDT configuration information, continues to measure the geographical position according to the MDT configuration information and reports the obtained geographical position information to the base station.

Example two:

in this embodiment, the MDT-related QoS measurement is performed on the base station side, the geographical location measurement is performed on the terminal side, and the reason why the service interruption occurs in the terminal is that the terminal performs intra-base-station inter-cell handover.

For the base station side:

the method comprises the following steps: after sending a switching command to the terminal, the base station reserves MDT configuration information and continues to carry out MDT related QoS measurement on the terminal according to the reserved MDT configuration information; preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

step two: the base station associates the geographical location information measured in the measurement period with the service interruption with the measurement result of the base station performing the MDT related QoS measurement in the measurement period, and preferably, adds a cell identifier to each association result, where the cell identifier indicates that the measurement result in the corresponding association result is a source cell or a target cell corresponding to handover, and reports the association result to the TCE; the base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

For the terminal side:

and after receiving the switching command, the terminal stores the self MDT configuration information, continues to measure the geographical position according to the MDT configuration information and reports the obtained geographical position information to the base station.

Example three:

in this embodiment, the MDT-related QoS measurement is performed on the base station side, the geographical location measurement is performed on the terminal side, and the reason why the service interruption occurs in the terminal is that the terminal performs inter-base station handover, and the base station is the source base station of the handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the base station side:

the method comprises the following steps: after sending a switching command to the terminal, the source base station reserves MDT configuration information and continues to carry out MDT related QoS measurement on the terminal according to the MDT configuration information; and the source base station sends the MDT configuration information to the target base station in the switching preparation process so that the target base station continues to carry out MDT related QoS measurement on the terminal according to the MDT configuration information. Preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

step two: if the source base station receives the geographical position information which is reported by the terminal and measured in the measurement period in which the service interruption occurs, or the source base station measures the geographical position information of the terminal in the measurement period through a positioning method and the like, the source base station associates the obtained geographical position information of the terminal with the measurement result of the source base station performing the MDT related QoS measurement in the measurement period, preferably, a cell identifier can be added in each association result, and the cell identifier represents a source cell which is switched corresponding to the measurement result in the corresponding association result; and reports the correlation result to the TCE. The base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the source base station does not receive the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, and the source base station does not measure the geographical location information of the terminal in the measurement period, the measurement result of the source base station performing the MDT related QoS measurement in the measurement period is invalid.

For the terminal side:

and after receiving the switching command, the terminal stores the self MDT configuration information, continues to measure the geographical position according to the MDT configuration information, and reports the obtained geographical position information to the source base station or the target base station.

Example four:

in this embodiment, the MDT-related QoS measurement is performed on the base station side, the geographical location measurement is performed on the terminal side, and the reason why the service interruption occurs in the terminal is that the terminal performs inter-base station handover and the base station is the target base station for handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the base station side:

the method comprises the following steps: the target base station receives MDT configuration information sent by the source base station in the switching preparation process, and after the terminal accesses the cell of the target base station, the terminal continues to carry out MDT related QoS measurement according to the MDT configuration information; preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

step two: if the target base station receives the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, or the target base station measures the geographical location information of the terminal in the measurement period through a positioning method and the like, the target base station associates the obtained geographical location information of the terminal with the measurement result of the target base station performing the MDT related QoS measurement in the measurement period, preferably, a cell identifier can be added in each association result, and the cell identifier represents a target cell corresponding to the switching of the measurement result in the corresponding association result; and reports the correlation result to the TCE. The base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the target base station does not receive the geographical location information which is reported by the terminal and measured in the measurement period in which the service interruption occurs, and the source base station does not measure the geographical location information of the terminal in the measurement period, the measurement result of the target base station performing the MDT related QoS measurement in the measurement period is invalid.

For the terminal side:

Example five:

in this embodiment, the MDT-related QoS measurement and the geographic location measurement are performed on the base station side, and the cause of service interruption is that the terminal performs intra-cell handover, RRC connection reestablishment, or RLF in the base station.

For the base station side:

the method comprises the following steps: after the service of the terminal is interrupted, the base station reserves MDT configuration information, and continuously performs MDT related QoS measurement and geographic position measurement on the terminal according to the MDT configuration information;

step two: the base station associates the measurement result of MDT related QoS measurement in the measurement period of service interruption of the terminal with the geographical position information of the terminal measured by the base station in the measurement period, and reports the association result to the TCE; the base station may add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

Example six:

in this embodiment, the MDT-related QoS measurement and the geographic location measurement are performed on the base station side, and the reason for the service interruption of the terminal is that the terminal performs inter-cell handover within the base station.

For the base station side:

the method comprises the following steps: after sending a switching command to the terminal, the base station reserves MDT configuration information and continues to carry out MDT related QoS measurement and geographic position measurement on the terminal according to the MDT configuration information; preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

step two: the base station associates the measurement result of the MDT-related QoS measurement performed in the measurement period in which the terminal has a service interruption with the geographical location information of the terminal measured by the base station in the measurement period, and preferably, adds a cell identifier to each association result, where the cell identifier indicates that the measurement result in the corresponding association result is a source cell or a target cell to be switched correspondingly, and reports the association result to the TCE; the base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

Example seven:

in this embodiment, the MDT-related QoS measurement and the geographic location measurement are performed on the base station side, and the reason why the service interruption occurs in the terminal is that the terminal performs inter-base station handover, and the base station is a source base station for handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the base station side:

the method comprises the following steps: after sending a switching command to the terminal, the source base station reserves MDT configuration information and continues to carry out MDT related QoS measurement and geographic position measurement on the terminal according to the MDT configuration information; the source base station sends the MDT configuration information to the target base station in the switching preparation process so that the target base station continues to carry out MDT related QoS measurement and geographic position measurement on the terminal according to the MDT configuration information; preferably, the MDT-related QoS measurement may be a cell identity-independent measurement.

Step two: if the source base station obtains the geographical location information of the terminal in the measurement period in which the service interruption occurs through measurement by a positioning method and the like, the source base station associates the obtained geographical location information of the terminal with the measurement result of the source base station performing the MDT related QoS measurement in the measurement period, preferably, a cell identifier can be added to each association result, and the cell identifier represents a source cell to which the measurement result in the corresponding association result corresponds to be switched; and reports the correlation result to the TCE. The base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the source base station does not measure the geographical position information of the terminal in the measurement period in which the service interruption occurs, the measurement result of the MDT related QoS measurement performed by the source base station in the measurement period is invalid.

Example eight:

in this embodiment, the MDT-related QoS measurement and the geographic location measurement are performed on the base station side, and the reason why the service interruption occurs in the terminal is that the terminal performs inter-base station handover, and the base station is a target base station for handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the base station side:

the method comprises the following steps: the target base station receives MDT configuration information sent by a source base station in the switching preparation process, and after a terminal accesses a cell of the target base station, the terminal continues to carry out MDT related QoS measurement and geographic position measurement according to the MDT configuration information; preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

step two: if the target base station obtains the geographical location information of the terminal in the measurement period in which the service interruption occurs by measuring through a positioning method and the like, the target base station associates the obtained geographical location information of the terminal with the measurement result of the target base station performing the MDT related QoS measurement in the measurement period, preferably, a cell identifier can be added to each association result, and the cell identifier represents a target cell to which the measurement result in the corresponding association result corresponds to be switched; and reports the correlation result to the TCE. The base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the target base station does not measure the geographical position information of the terminal in the measurement period in which the service interruption occurs, the measurement result of the MDT related QoS measurement performed by the target base station in the measurement period is invalid.

Example nine:

in this embodiment, the geographical location measurement is performed on the base station side, the MDT-related QoS measurement is performed on the terminal side, and the cause of service interruption is that the terminal performs intra-base station intra-cell handover or RRC connection reestablishment or RLF.

For the base station side:

the method comprises the following steps: after the service of the terminal is interrupted, the base station reserves the MDT configuration information and continues to measure the geographical position of the terminal according to the MDT configuration information;

step two: the base station directly associates the geographical position information of the terminal measured in the measurement period of service interruption of the terminal with the measurement result of MDT related QoS measurement in the measurement period reported by the terminal, and reports the association result to the TCE; the base station may add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

For the terminal side:

and after the service is interrupted, the terminal stores the self MDT configuration information, continues to carry out MDT related QoS measurement according to the MDT configuration information, and reports the obtained measurement result to the base station.

Example ten:

in this embodiment, the geographic location measurement is performed on the base station side, the MDT-related QoS measurement is performed on the terminal side, and the reason why the service interruption occurs in the terminal is that the terminal performs non-intra-base-station intra-cell handover, which is specifically intra-base-station inter-cell handover in this embodiment.

For the base station side:

the method comprises the following steps: after sending a switching command to the terminal, the base station reserves MDT configuration information and continues to measure the geographical position of the terminal according to the MDT configuration information;

step two: the base station associates the geographical location information of the terminal measured in the measurement period in which the service interruption occurs in the terminal with the measurement result reported by the terminal for performing the MDT related QoS measurement in the measurement period, preferably, a cell identifier may be added to each association result, the cell identifier indicates that the measurement result in the corresponding association result is a source cell or a target cell corresponding to the handover, and reports the association result to the TCE; the base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

For the terminal side:

and after receiving the switching command, the terminal stores the self MDT configuration information, continues to carry out MDT related QoS measurement according to the MDT configuration information, and reports the obtained measurement result to the base station. Preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

example eleven:

in this embodiment, the geographic location measurement is performed on the base station side, the MDT-related QoS measurement is performed on the terminal side, and the reason why the service interruption occurs in the terminal is that the terminal performs non-intra-base-station intra-cell handover, which is specifically inter-base-station handover and the base station is a source base station of handover in this embodiment. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the base station side:

the method comprises the following steps: after sending a switching command to the terminal, the source base station reserves MDT configuration information and continues to carry out geographic position measurement on the terminal according to the MDT configuration information; and the source base station sends the MDT configuration information to the target base station in the switching preparation process so that the target base station continues to measure the geographical position of the terminal according to the MDT configuration information.

Step two: if the source base station obtains the geographical location information of the terminal in the measurement period in which the service interruption occurs through the measurement of a positioning method and the like, the source base station associates the obtained geographical location information of the terminal with the measurement result of performing the MDT related QoS measurement in the measurement period reported by the terminal, preferably, a cell identifier can be added to each association result, and the cell identifier represents a source cell to which the measurement result in the corresponding association result corresponds to be switched; and reports the correlation result to the TCE. The base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the source base station does not measure the geographical location information of the terminal in the measurement period in which the service interruption occurs, the measurement result of the terminal received by the source base station for performing the MDT related QoS measurement in the measurement period is invalid.

For the terminal side:

and after receiving the switching command, the terminal stores the self MDT configuration information, continues to carry out MDT related QoS measurement according to the MDT configuration information, and reports the obtained measurement result to the base station. Preferably, the MDT-related QoS measurement may be a cell identity-independent measurement.

Example twelve:

in this embodiment, the geographic location measurement is performed on the base station side, the MDT-related QoS measurement is performed on the terminal side, and the reason why the service interruption occurs in the terminal is that the terminal performs non-intra-base-station intra-cell handover, which is specifically inter-base-station handover and the base station is a target base station for handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the base station side:

the method comprises the following steps: the target base station receives MDT configuration information sent by a source base station in the switching preparation process, and after a terminal accesses a cell of the target base station, the geographical position of the terminal is continuously measured according to the MDT configuration information;

step two: if the target base station obtains the geographical location information of the terminal in the measurement period in which the service interruption occurs through measurement by a positioning method and the like, the target base station associates the obtained geographical location information of the terminal with the measurement result of performing the MDT related QoS measurement in the measurement period reported by the terminal, preferably, a cell identifier can be added to each association result, and the cell identifier represents a target cell to which the measurement result in the corresponding association result corresponds to be switched; and reports the correlation result to the TCE. The base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the target base station does not measure the geographical position information of the terminal in the measurement period in which the service interruption occurs, the measurement result of the MDT related QoS measurement performed by the terminal in the measurement period received by the target base station is invalid.

For the terminal side:

Example thirteen:

in this embodiment, the MDT-related QoS measurement and the geographic location measurement are performed on the terminal side, and the cause of service interruption is that the terminal performs intra-cell handover in the base station, RRC connection reestablishment, or RLF.

For the terminal side:

the method comprises the following steps: after the service is interrupted, the terminal stores the self MDT configuration information and continues to carry out MDT related QoS measurement and geographical position measurement according to the MDT configuration information;

step two: and the terminal reports the measurement results of the MDT related QoS measurement and the geographical position measurement to the base station.

For the base station side:

the method comprises the following steps: a base station receives the measurement results of MDT related QoS measurement and geographical position measurement reported by a terminal;

step two: the base station correlates the measurement result of MDT related QoS measurement in the measurement period with the geographical position information in the measurement period reported by the terminal, and reports the correlation result to the TCE; the base station may add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

Example fourteen:

in this embodiment, the geographic location measurement and the MDT-related QoS measurement are performed on the terminal side, and the reason for the service interruption of the terminal is that the terminal performs non-intra-base-station intra-cell handover, which is specifically intra-base-station inter-cell handover in this embodiment.

For the terminal side:

the method comprises the following steps: after receiving the switching command, the terminal stores the self MDT configuration information and continues to carry out MDT related QoS measurement and geographical position measurement according to the MDT configuration information; preferably, the MDT-related QoS measurement may be a cell identity-independent measurement;

For the base station side:

step two: the base station associates the measurement result of the MDT related QoS measurement in the measurement period with the geographical location information in the measurement period reported by the terminal, preferably, adds a cell identifier in each association result, wherein the cell identifier indicates that the measurement result in the corresponding association result is a source cell or a target cell corresponding to the handover, and reports the association result to the TCE; the base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

Example fifteen:

in this embodiment, the geographic location measurement and the MDT-related QoS measurement are performed on the terminal side, and the cause of service interruption of the terminal is that the terminal performs non-intra-base-station intra-cell handover, which is specifically inter-base-station handover and the local base station is a source base station of handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the terminal side:

step two: the terminal reports the measurement result of the MDT related QoS measurement to the source base station and the target base station; and reporting the measurement result of the geographic position measurement to the source base station or the target base station.

For the base station side:

the method comprises the following steps: the source base station receives the MDT related QoS measurement reported by the terminal and possibly receives the measurement result of the geographical position measurement;

step two: if the source base station receives the geographical position information which is reported by the terminal and is measured in the measurement period in which the service interruption occurs, or the geographical position information of the terminal in the measurement period is obtained by the measurement of the source base station, the obtained geographical position information of the terminal is associated with the measurement result which is reported by the terminal and is used for performing MDT related QoS measurement in the measurement period, preferably, a cell identifier can be added in each association result, and the cell identifier represents a source cell which is switched correspondingly to the measurement result in the corresponding association result; and reporting the correlation result to the TCE; the base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the source base station does not receive the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, and the source base station does not measure the geographical location information of the terminal in the measurement period, the measurement result, which is reported by the terminal and used for performing the MDT related QoS measurement in the measurement period, is invalid.

Example sixteen:

in this embodiment, the geographic location measurement and the MDT-related QoS measurement are performed on the terminal side, and the cause of service interruption of the terminal is that the terminal performs non-intra-base-station intra-cell handover, which is specifically inter-base-station handover and the local base station is a target base station for handover. In this embodiment, the source base station and the target base station that are switched keep time synchronization.

For the terminal side:

For the base station side:

the method comprises the following steps: the target base station receives the measurement result of the MDT related QoS measurement reported by the terminal and possibly receives the measurement result of the geographical position measurement;

step two: if the target base station receives the geographical position information which is reported by the terminal and is measured in the measurement period in which the service interruption occurs, or the geographical position information of the terminal in the measurement period is obtained by the measurement of the target base station, the obtained geographical position information of the terminal is associated with the measurement result which is reported by the terminal and is used for performing MDT related QoS measurement in the measurement period, preferably, a cell identifier can be added in each association result, and the cell identifier represents a target cell which is switched correspondingly to the measurement result in the corresponding association result; and reporting the correlation result to the TCE; the base station may further add an interruption identifier in the association result, so that the operator may analyze the delay impact of the service interruption on the service transmission/throughput and the like according to the interruption identifier.

If the target base station does not receive the geographical location information which is reported by the terminal and is measured in the measurement period in which the service interruption occurs, and the target base station does not measure the geographical location information of the terminal in the measurement period, the measurement result which is reported by the terminal and is used for performing the MDT related QoS measurement in the measurement period is invalid.

In the foregoing embodiments, reference may be made to fig. 3a for performing intra-base station intra-cell handover by the terminal, reference may be made to fig. 3b for performing intra-base station intra-cell handover by the terminal, and reference may be made to fig. 3c for performing inter-base station handover by the terminal.

In the above embodiments, the measurement period of the geographic position measurement and the time when the service interruption occurs are shown in fig. 3d and fig. 3 e. In fig. 3d, the time of the service interruption is contained within the whole measurement period; in fig. 3e, the time of the service interruption covers the boundary of the measurement period.

In the present invention, the MDT related QoS measurement includes: throughput measurements and/or data volume measurements.

In the invention, when the base station or the terminal carries out the geographic position measurement, the geographic position measurement is carried out according to the original measurement period, and only one piece of geographic position information of the terminal is obtained in one measurement period.

Referring to fig. 4, an embodiment of the present invention provides a base station, where the base station includes:

a saving unit 40, configured to reserve MDT configuration information after a service interruption of a terminal;

a measuring unit 41, configured to continue performing MDT-related QoS measurement and/or geographic location measurement on the terminal according to the MDT configuration information.

Further, the base station further includes:

a first reporting unit 42, configured to, when the measuring unit continues to perform MDT related QoS measurement on the terminal according to the MDT configuration information, associate the geographic location information, which is reported by the terminal and is measured in a measurement period in which a service interruption occurs, with a measurement result, which is obtained by performing MDT related QoS measurement in the measurement period by the measuring unit, and report the association result to the TCE.

Further, the first reporting unit 42 is configured to:

if the reason of the service interruption of the terminal is that the terminal performs intra-cell switching in a base station or inter-cell switching in the base station or Radio Resource Control (RRC) connection reestablishment or Radio Link Failure (RLF), associating the geographical position information which is reported by the terminal and is measured in a measurement period in which the service interruption occurs with a measurement result of MDT related QoS measurement performed by the measurement unit in the measurement period; or,

if the reason that the service interruption occurs in the terminal is that the terminal performs inter-base station handover, when the base station receives the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, or the base station measures the geographical location information of the terminal in the measurement period, the obtained geographical location information of the terminal is associated with the measurement result of the measurement unit performing the MDT related QoS measurement in the measurement period.

Further, when the reason that the service interruption occurs in the terminal is that the terminal performs inter-base station handover, if the base station does not receive the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, and the base station itself does not measure the geographical location information of the terminal in the measurement period, the measurement result of performing MDT-related QoS measurement by the measurement unit in the measurement period is invalid.

Further, the base station further includes:

a second reporting unit 43, configured to, when the measuring unit continues to perform MDT-related QoS measurement and geographic location measurement on the terminal according to the MDT configuration information, associate the measurement result of the MDT-related QoS measurement performed by the measuring unit in the measurement period in which the terminal has a service interruption with the geographic location information of the terminal measured by the measuring unit in the measurement period, and report the association result to the TCE.

Further, the second reporting unit 43 is configured to:

if the reason of service interruption of the terminal is that the terminal performs intra-cell handover in a base station or inter-cell handover in the base station or RRC connection reestablishment or RLF, correlating the measurement result of the MDT related QoS measurement performed by the measurement unit in the measurement period of service interruption of the terminal with the geographical position information of the terminal measured by the measurement unit in the measurement period; or,

and if the reason that the service interruption occurs to the terminal is that the terminal performs inter-base station switching, associating the obtained geographical position information of the terminal with the measurement result of the measurement unit performing the MDT related QoS measurement in the measurement period when the geographical position information of the terminal in the measurement period is obtained by the measurement of the base station.

Further, the base station further includes:

a third reporting unit 44, configured to, when the measuring unit continues to perform geographic location measurement on the terminal according to the MDT configuration information, associate the geographic location information of the terminal, which is obtained by the measuring unit during a measurement period in which a service interruption occurs in the terminal, with a measurement result, which is reported by the terminal and in which MDT-related QoS measurement is performed during the measurement period, and report the association result to the TCE.

Further, the third reporting unit 44 is configured to:

if the reason for the service interruption of the terminal is that the terminal performs intra-cell handover in a base station or inter-cell handover in a base station or RRC connection reestablishment or RLF, associating the geographical location information of the terminal, which is obtained by the measurement unit during the measurement period in which the service interruption of the terminal occurs, with the measurement result, which is reported by the terminal and performs MDT related QoS measurement during the measurement period; or,

and if the reason that the service interruption occurs in the terminal is that the terminal performs inter-base station switching, when the measuring unit measures the geographical location information of the terminal in the measuring period, associating the obtained geographical location information of the terminal with the measuring result reported by the terminal for performing the MDT related QoS measurement in the measuring period.

Further, the second reporting unit 43 or the third reporting unit 44 is configured to:

when the reason for service interruption of the terminal is that the terminal performs inter-base station handover, if the measurement unit does not measure the geographical location information of the terminal in the measurement period, the measurement result of performing MDT related QoS measurement in the measurement period is invalid.

Further, if the cause of service interruption of the terminal is that the terminal performs intra-base station inter-cell handover or inter-base station handover, the measurement unit 41 measures the measurement quantity unrelated to the cell identifier when continuing to perform MDT related QoS measurement on the terminal according to the MDT configuration information.

Further, the first reporting unit 42, the second reporting unit 43, or the third reporting unit 44 is further configured to:

if the reason of service interruption of the terminal is that the terminal performs inter-cell switching in the base station, adding a cell identifier in the association result, wherein the cell identifier indicates that the measurement result in the corresponding association result is a source cell or a target cell corresponding to the switching;

if the reason that the service interruption occurs in the terminal is that the terminal performs inter-base station switching and the base station is a switching source base station, adding a cell identifier in the association result, wherein the cell identifier represents a source cell corresponding to the switching of the measurement result in the corresponding association result;

and if the reason of the service interruption of the terminal is that the terminal performs inter-base station handover and the base station is a target base station for handover, adding a cell identifier in the association result, wherein the cell identifier represents a target cell corresponding to the handover of the measurement result in the corresponding association result.

Further, the base station further includes:

a transferring unit 45, configured to send the MDT configuration information to a target base station in a handover process when the reason that the service interruption occurs in the terminal is that the terminal performs inter-base station handover and the base station is a source base station of the handover, so that the target base station continues to perform MDT-related QoS measurement and/or geographic location measurement on the terminal according to the MDT configuration information.

Further, when the cause of service interruption of the terminal is that the terminal performs inter-base station handover and the base station is a target base station of handover, the storage unit 41 specifically obtains the MDT configuration information from a source base station of handover.

Further, when the reason for the service interruption of the terminal is that the terminal performs inter-base station handover, the time synchronization between the handover source base station and the handover target base station is maintained.

Further, before reporting the association result to the TCE, the first reporting unit 42, the second reporting unit 43, or the third reporting unit 44 adds an interrupt identifier to the association result.

Further, the MDT related QoS measurement includes: throughput measurements and/or data volume measurements.

Referring to fig. 5, an embodiment of the present invention provides a terminal, where the terminal includes:

a storing unit 50, configured to store MDT configuration information of itself after a terminal service is interrupted;

a measuring unit 51, configured to continue the MDT-related QoS measurement and/or the geographic location measurement according to the MDT configuration information.

Further, the reason why the terminal has service interruption is that: the terminal performs intra-base-station intra-cell handover, intra-base-station inter-cell handover, inter-base-station handover, RRC connection reestablishment, or radio link failure RLF.

Further, the terminal further includes:

a reporting unit 52, configured to report, to the base station, a measurement result of the measurement unit performing the MDT-related QoS measurement and/or the geographic location measurement.

Further, if the cause of service interruption of the terminal is that the terminal performs non-intra-base-station intra-cell handover, the measurement unit performs measurement on the measurement quantity unrelated to the cell identifier specifically when continuing the MDT-related QoS measurement according to the MDT configuration information.

Further, the MDT-related QoS measurement includes: throughput measurements and/or data volume measurements.

In conclusion, the beneficial effects of the invention include:

in the scheme provided by the embodiment of the invention, after the service of the terminal is interrupted, the MDT related QoS measurement and/or the geographical position measurement are continuously carried out on the terminal according to the MDT configuration information.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for minimization of drive tests, MDT, comprising:

and the base station continuously performs MDT related service quality QoS measurement and/or geographical position measurement on the terminal according to the MDT configuration information.

2. The method of claim 1, wherein when the base station continues to perform MDT-related QoS measurements for the terminal according to the MDT configuration information, further comprising:

and the base station associates the geographical position information which is reported by the terminal and is measured in the measurement period in which the service interruption occurs with the measurement result of MDT related QoS measurement performed by the base station in the measurement period, and reports the association result to a tracking result collection entity (TCE).

3. The method as claimed in claim 2, wherein the associating, by the base station, the geographical location information measured and reported by the terminal during the measurement period in which the service interruption occurs with the measurement result of the MDT-related QoS measurement performed during the measurement period, specifically comprises:

if the reason for the service interruption of the terminal is that the terminal performs intra-cell switching in a base station or inter-cell switching in the base station or Radio Resource Control (RRC) connection reestablishment or Radio Link Failure (RLF), the base station associates the geographical position information, which is reported by the terminal and measured in a measurement period in which the service interruption occurs, with the measurement result of the base station performing MDT related QoS measurement in the measurement period; or,

if the reason that the service interruption occurs in the terminal is that the terminal performs inter-base station handover, when the base station receives the geographical location information which is reported by the terminal and measured in the measurement period in which the service interruption occurs, or the base station measures the geographical location information of the terminal in the measurement period, the obtained geographical location information of the terminal is associated with the measurement result of the base station performing the MDT related QoS measurement in the measurement period.

4. The method of claim 3, wherein when the cause of the service interruption occurs in the terminal is that the terminal performs inter-base station handover, if the base station does not receive the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, and the base station itself does not measure the geographical location information of the terminal in the measurement period, the measurement result of the MDT-related QoS measurement performed by the base station in the measurement period is invalid.

5. The method of claim 1, wherein when the base station continues to perform MDT-related QoS measurements and geographical location measurements for the terminal according to the MDT configuration information, further comprising:

and the base station associates the measurement result of the MDT related QoS measurement in the measurement period of the service interruption of the terminal with the geographical position information of the terminal measured by the base station in the measurement period, and reports the association result to the TCE.

6. The method as claimed in claim 5, wherein the step of the base station associating the measurement result of the MDT-related QoS measurement performed during the measurement period in which the terminal has a service interruption with the geographical location information of the terminal measured by the base station during the measurement period comprises:

if the reason for the service interruption of the terminal is that the terminal performs intra-cell handover in a base station or inter-cell handover in the base station or RRC connection reestablishment or RLF, the base station associates the measurement result of the MDT related QoS measurement performed in the measurement period of the service interruption of the terminal with the geographical position information of the terminal measured by the base station in the measurement period; or,

and if the reason that the service interruption occurs to the terminal is that the terminal performs switching among the base stations, when the base station measures the geographical position information of the terminal in the measurement period in which the service interruption occurs, associating the obtained geographical position information of the terminal with the measurement result of the base station performing the MDT related QoS measurement in the measurement period.

7. The method of claim 1, wherein while the base station continues to perform the geographical location measurement for the terminal according to the MDT configuration information, further comprising:

and the base station associates the geographical position information of the terminal, which is obtained by measuring in the measuring period of the service interruption of the terminal, with the measuring result of MDT related QoS measurement in the measuring period reported by the terminal, and reports the associated result to the TCE.

8. The method of claim 7, wherein the associating, by the base station, the geographical location information of the terminal measured in the measurement period in which the service interruption occurs in the terminal with the measurement result of performing the MDT-related QoS measurement in the measurement period reported by the terminal, specifically comprises:

if the reason for the service interruption of the terminal is that the terminal performs intra-cell handover in a base station or inter-cell handover in the base station or RRC connection reestablishment or RLF, the base station associates the geographical position information of the terminal, which is measured in the measurement period in which the service interruption of the terminal occurs, with the measurement result, which is reported by the terminal and performs MDT related QoS measurement in the measurement period; or,

and if the reason that the service interruption occurs to the terminal is that the terminal performs switching among base stations, when the base station measures and obtains the geographical position information of the terminal in the measurement period in which the service interruption occurs, associating the obtained geographical position information of the terminal with the measurement result, which is reported by the terminal and performs MDT related QoS measurement in the measurement period.

9. The method according to claim 6 or 8, wherein when the terminal performs inter-base station handover due to service interruption of the terminal, if the base station itself does not measure the geographical location information of the terminal in the measurement period, the measurement result of performing MDT-related QoS measurement in the measurement period is invalid.

10. The method according to claim 3 or 6, wherein if the terminal performs intra-base station inter-cell handover or inter-base station handover due to service interruption, the base station performs measurement on the measurement quantity that is not related to the cell identifier while continuing to perform MDT-related QoS measurement on the terminal according to the MDT configuration information.

11. The method of claim 3, 6 or 8, further comprising:

12. The method as claimed in claim 3, 6 or 8, wherein when the cause of service interruption of the terminal is that the terminal performs inter-base station handover and the base station is a source base station of handover, the method further comprises:

and the source base station sends the MDT configuration information to the target base station in the switching process so that the target base station continues to carry out MDT related QoS measurement and/or geographical position measurement on the terminal according to the MDT configuration information.

13. The method according to claim 3, 6 or 8, wherein when the cause of the service interruption of the terminal is that the terminal performs inter-base station handover and the base station is a target base station of the handover, the target base station specifically obtains the MDT configuration information from a source base station of the handover.

14. The method according to claim 3 or 6 or 8, characterized in that when the reason for the service interruption of the terminal is that the terminal performs inter-base station handover, the time synchronization between the source base station and the target base station is maintained.

15. The method of claim 2, 5 or 7, wherein before the base station reports the association result to the TCE, further comprising: and the base station adds an interruption identifier in the association result.

16. The method of claim 1, wherein the MDT-related QoS measurements comprise: throughput measurements and/or data volume measurements.

17. A method for minimization of drive tests, MDT, comprising:

18. The method of claim 17, wherein the reason for the terminal to experience service interruption is that: the terminal performs intra-cell handover within a base station, inter-base station handover, radio resource control RRC connection reestablishment, or radio link failure RLF.

19. The method of claim 17, wherein after the terminal continues MDT-related QoS measurements and/or geographical location measurements according to the MDT configuration information, further comprising:

and the terminal reports the measurement result of the MDT related QoS measurement and/or the geographical position measurement to the base station.

20. The method of claim 17, wherein if the terminal performs non-intra-base-station intra-cell handover due to the service interruption, the terminal performs the MDT-related QoS measurement according to the MDT configuration information, specifically, measures a measurement quantity unrelated to a cell identifier.

21. The method of any of claims 17-20, wherein the MDT-related QoS measurements comprise: throughput measurements and/or data volume measurements.

22. A base station, comprising:

23. The base station of claim 22, wherein the base station further comprises:

a first reporting unit, configured to associate, when the measuring unit continues to perform MDT-related QoS measurement on the terminal according to the MDT configuration information, the geographical location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, with a measurement result, which is obtained by performing MDT-related QoS measurement in the measurement period by the measuring unit, and report the association result to the TCE.

24. The base station of claim 23, wherein the first reporting unit is configured to:

25. The base station of claim 24, wherein when the cause of the service interruption occurs in the terminal is that the terminal performs inter-base station handover, if the base station does not receive the geographic location information, which is reported by the terminal and measured in the measurement period in which the service interruption occurs, and the base station itself does not measure the geographic location information of the terminal in the measurement period, the measurement unit invalidates the measurement result of performing the MDT-related QoS measurement in the measurement period.

26. The base station of claim 22, wherein the base station further comprises:

and a second reporting unit, configured to, when the measuring unit continues to perform MDT-related QoS measurement and geographic location measurement on the terminal according to the MDT configuration information, associate a measurement result of the MDT-related QoS measurement performed by the measuring unit in a measurement period in which a service interruption occurs in the terminal with the geographic location information of the terminal measured by the measuring unit in the measurement period, and report the association result to the TCE.

27. The base station of claim 26, wherein the second reporting unit is configured to:

28. The base station of claim 22, wherein the base station further comprises:

and a third reporting unit, configured to, when the measuring unit continues to perform geographic location measurement on the terminal according to the MDT configuration information, associate the geographic location information of the terminal, which is obtained by the measuring unit during a measurement period in which a service interruption occurs in the terminal, with a measurement result, which is reported by the terminal and in which MDT-related QoS measurement is performed during the measurement period, and report the association result to the TCE.

29. The base station of claim 28, wherein the third reporting unit is configured to:

30. The base station of claim 27 or 29, wherein the second reporting unit or the third reporting unit is configured to:

31. The base station of claim 24 or 27, wherein if the cause of the service interruption of the terminal is that the terminal performs intra-base-station inter-cell handover or inter-base-station handover, the measuring unit is configured to measure the measurement quantity that is not related to the cell identifier while continuing to perform MDT-related QoS measurement on the terminal according to the MDT configuration information.

32. The base station of claim 24, 27 or 29, wherein the first reporting unit, the second reporting unit, or the third reporting unit is further configured to:

33. The base station of claim 24, 27 or 29, further comprising:

and the transfer unit is used for sending the MDT configuration information to a target base station in the switching process when the reason of service interruption of the terminal is that the terminal performs inter-base station switching and the base station is a switching source base station, so that the target base station continues to perform MDT related QoS measurement and/or geographical position measurement on the terminal according to the MDT configuration information.

34. The base station of claim 24, 27 or 29, wherein the storing unit is specifically configured to obtain the MDT configuration information from a handover source base station when a cause of service interruption of the terminal is that the terminal performs inter-base station handover and the base station is a handover target base station.

35. The base station of claim 24 or 27 or 29, wherein when the inter-base station handover is performed by the terminal due to the service interruption of the terminal, the time synchronization between the source base station and the target base station is maintained.

36. The base station of claim 23, 26 or 28, wherein the first reporting unit, the second reporting unit, or the third reporting unit adds an interrupt flag to the association result before reporting the association result to the TCE.

37. The base station of claim 22, wherein the MDT-related QoS measurements comprise: throughput measurements and/or data volume measurements.

38. A terminal, characterized in that the terminal comprises:

39. The terminal of claim 38, wherein the reason for the service interruption of the terminal is that: the terminal performs intra-cell handover within a base station, inter-base station handover, radio resource control RRC connection reestablishment, or radio link failure RLF.

40. The terminal of claim 38, wherein the terminal further comprises:

and the reporting unit is used for reporting the measurement result of the MDT related QoS measurement and/or the geographical position measurement performed by the measurement unit to the base station.

41. The terminal of claim 38, wherein if the cause of the service interruption of the terminal is that the terminal performs non-intra-base-station intra-cell handover, the measuring unit performs measurement on the measurement quantity that is not related to the cell identifier, when continuing the MDT-related QoS measurement according to the MDT configuration information.

42. The terminal according to any of claims 38-41, wherein the MDT related QoS measurements comprise: throughput measurements and/or data volume measurements.