CN106162709B

CN106162709B - Method and device for MDT (minimization of drive test) of loss rate

Info

Publication number: CN106162709B
Application number: CN201510170232.6A
Authority: CN
Inventors: 李大鹏; 杨立
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-04-10
Filing date: 2015-04-10
Publication date: 2021-05-07
Anticipated expiration: 2035-04-10
Also published as: WO2016161775A1; CN106162709A

Abstract

The invention provides a method and a device for MDT (minimization of drive test) of a loss rate, wherein the method comprises the following steps: a terminal receives a first message which is sent by a network element and carries MDT configuration, wherein the MDT configuration is a parameter for MDT measurement of a loss rate; the terminal measures the loss rate according to the MDT configuration; and the terminal reports the loss rate to measure the loss rate. The invention solves the problem that the terminal in the related technology can not provide MDT measurement of loss rate minimization of drive tests, thereby filling the blank of the related technology.

Description

Method and device for MDT (minimization of drive test) of loss rate

Technical Field

The invention relates to the field of communication, in particular to a method and a device for MDT (minimization of drive test) with a loss rate.

Background

To reduce the cost and complexity of manual drive tests performed by operators using dedicated equipment, the Third Generation Partnership project (3 GPP) includes: a Universal Terrestrial Radio Access Network (UTRAN, abbreviated as UTRAN) of a base station Node B and a Radio Network controller RNC and a Release 10(Release-10) of an Evolved Universal Terrestrial Radio Access Network (E-UTRAN, abbreviated as E-UTRAN) system including an Evolved base station eNB start to introduce a Minimization of Drive Test (MDT) function.

A Core Network (CN) corresponding to the UTRAN includes a Home Subscriber Server (HSS), also called a location register, a Mobile Switching center Server (MSC Server), a Serving General Packet Radio Service GPRS Support Node (SGSN), and the like. The core network CN corresponding to the E-UTRAN includes: a home subscriber server location register HSS, a Mobile Management Entity (MME), and the like. The minimization of drive tests (mdt) function utilizes User Equipment (User Equipment, UE for short) to automatically collect measurement information And reports the measurement information to a Radio Access Network (RAN for short) through a Control Plane (Control Plane) signaling, wherein for a UTRAN system, RNC, for an E-UTRAN system, eNB, And then reports the measurement information to a tracking Collection Entity (TCE for short) of an Operation And Maintenance system (Operation And Maintenance, OAM) through the Radio Access Network, And is used for Network optimization, for example: network coverage problems are discovered and solved.

MDT functions are divided into management-based MDT (managed based MDT) and signaling-based MDT (signaling based MDT); in the MDT based management Activation process, generally (taking E-UTRAN system as an example, the same shall apply hereinafter), OAM sends a Trace Activation message (TSA for short) containing MDT configuration to eNB, and eNB selects a suitable UE in an Area (Area) specified by the message and sends the MDT configuration information to the selected UE. The MDT activation process based on the signaling is that OAM sends a tracking activation message containing MDT configuration to a Home Subscriber Server (HSS) to activate MDT measurement of specified UE, a location register (HSS) sends the MDT configuration information of the UE to MME, the MME sends the MDT configuration information of the UE to eNB, and the eNB finally sends the MDT configuration information to the UE. Signaling-based MDT typically specifies a certain UE with an International Mobile Subscriber Identity (IMSI) or an International Mobile Station Equipment Identity (IMEI), or adds regional information to limit the selection of UEs. The MDT based on management and the Trace activation message based on signaling include Trace Reference (Trace Reference) information from OAM, including Public Land Mobile Network (PLMN) information, and are composed of a Mobile Country Code (MCC) and a Mobile Network Code (MNC).

The MDT function can be divided into two working modes according to whether the MDT function works in an idle state or a connected state, specifically, "recorded minimization of drive test (Logged MDT)" and "immediate minimization of drive test (immediatate MDT)"; the MDT is recorded when the UE is in a radio resource control IDLE state (for an E-UTRAN system, an RRC _ IDLE state is indicated; for a UTRAN system, a CELL _ paging channel state CELL _ PCH and a UTRAN registration area _ paging channel state URA _ PCH are also included). And when the configured conditions are met, collecting and storing related measurement information for reporting when receiving a radio access network RAN command requirement in the future, and summarizing or directly forwarding the data to the TCE after the radio access network RAN receives the data. The immediate minimization of drive test refers to that the UE collects relevant measurement information in a radio resource control connection state (for an E-UTRAN system, RRC _ CONNECTED state; for a UTRAN system, CELL _ dedicated channel state CELL _ DCH) and actively uploads the measurement information to a radio access network RAN when a report meets a reporting condition, and the radio access network RAN collects the report or directly transmits the report to the TCE after receiving the report.

The goal of MDT measurements is to provide data analysis network performance. The MDT measurement is used to discover key links that affect network performance, and to discover whether it is necessary to adjust network configuration parameters or expand the capacity of the network. When the network is deployed early or used in a large scale, the function can be used to detect whether the Quality of service (QoE) experience of the UE meets the requirements of network planning. The manual drive test in the related art also has the measurement work, but the cost of the manual drive test is high, and certain areas cannot be sufficiently measured by the manual drive test. Therefore, the MDT measurement adopts a certain amount of UE to report the measured data when using the service, and provides the operator with the measurement data with statistical significance.

In the related art, QoS is used to represent an actual transmission situation of a service, and there are nine different QoS in total, which are represented by QoS Class Identifiers (QCIs), and each QCI has a specified attribute value, such as maximum Delay requirement (PDB), Loss Rate (PELR) and Priority. In the related art, each terminal may have a plurality of radio access bearers, each radio access bearer has a radio bearer corresponding to one radio bearer, and each radio access bearer has a corresponding QCI, that is, each radio bearer has a corresponding QCI, for example, in an E-UTRAN system, a radio access bearer E-RAB and a radio bearer RB have and only have the same QCI.

The LTE network supports different services, such as MultiMedia Telephony service (MMTEL for short), which includes various forms of supporting Telephony, video, short messages, etc. When an operator deploys a service, the actual operation condition of the service needs to be considered, and it is important to use MDT to measure the deployment and use conditions of the MMTEL service, but the terminal in the related art does not have the MDT measurement for MMTEL.

Aiming at the problem that the terminal in the related art cannot provide the MDT measurement of the loss rate minimization of drive tests, an effective solution is not provided at present.

Disclosure of Invention

The present invention is directed to a method and an apparatus for Minimization of Drive Test (MDT) with a loss rate, so as to at least solve the problem in the related art that a terminal cannot provide MDT measurement with a loss rate Minimization of Drive Test (MDT).

According to an aspect of the present invention, there is provided a method of minimization of drive tests MDT for loss rate, comprising: a terminal receives a first message which is sent by a network element and carries MDT configuration, wherein the MDT configuration is a parameter for MDT measurement of a loss rate; the terminal measures the loss rate according to the MDT configuration; and the terminal reports the loss rate to measure the loss rate.

Further, the MDT configuration includes: loss rate measurement object, loss rate measurement cycle, loss rate measurement trigger condition.

Further, when the loss rate measurement trigger condition is a service type requiring loss rate measurement, the terminal performs loss rate measurement on the loss rate measurement object when the service indicated by the service type starts, and terminates loss rate measurement on the loss rate measurement object when the service indicated by the service type terminates.

Further, when the loss rate measurement object identifies a per-QCI discard rate for uplink per-quality-of-service class, the measuring, by the terminal, the per-QCI discard rate for uplink by the following means includes:

wherein the number of discarded packets per QCI includes: the packet data convergence protocol PDCP message number that is not transmitted over the air interface, or includes: the number of the messages of the QCI discarded by the terminal on a Radio Link Control (RLC) layer, a PDCP layer and a Media Access Control (MAC) layer; and the total number of the messages per QCI is the total number of the PDCP protocol data unit SDU messages of the QCI, which are transmitted to the PDCP layer by the PDCP upper layer protocol at the terminal side in unit time.

Further, when the loss rate measurement object is an uplink per-bearer drop rate, the measuring, by the terminal, the uplink per-bearer drop rate by the following method includes:

wherein the number of discarded packets per bearer comprises: the number of PDCP messages that are not delivered over the air interface, or including: the number of the carried messages discarded by the terminal on the RLC, the PDCP and the MAC layer; and the total number of the messages carried by each bearer is the total number of the PDCP SDU messages carried by the PDCP upper layer protocol of the terminal side to the PDCP layer in unit time.

Further, when the loss rate measurement object is an uplink per-terminal discard rate, the terminal measuring the uplink per-terminal discard rate by the following method includes:

wherein, the number of discarded messages per terminal includes: the number of PDCP messages that are not delivered over the air interface, or including: the number of messages discarded by the terminal on the RLC, the PDCP and the MAC layer; and the total number of the messages of each terminal is the total number of the PDCP SDU messages on the terminal, which are transmitted to a PDCP layer by a PDCP upper layer protocol of the terminal side in unit time.

Further, when the loss rate measurement object is an uplink per-QCI air interface discard rate, the measuring, by the terminal, the uplink per-QCI air interface discard rate by the following method includes:

wherein the uplink per-QCI air interface loss number includes: when the fragmentation message is transmitted at an air interface, the number of the PDCP messages which are not successfully responded is not received, and the PDCP messages which are not successfully responded are not retransmitted in the tested period; the number of successful transmissions per QCI in uplink comprises: the PDCP message number of the detected QCI which is transmitted at an air interface and receives successful response.

Further, when the loss rate measurement object is an uplink per-bearer air interface drop rate, the measuring, by the terminal, the uplink per-bearer air interface drop rate by the following method includes:

wherein the number of lost uplink air interfaces per bearer comprises: when the fragmentation message is transmitted at an air interface, the number of PDCP messages which are not successfully responded is not received, and the PDCP messages which are not successfully responded are not retransmitted in the tested period; the number of successful transmissions per bearer in uplink includes: the number of PDCP messages of the tested bearer which are transmitted over the air interface and receive successful response.

Further, when the loss rate measurement object is an uplink per-terminal air interface discard rate, the terminal measuring the uplink per-terminal air interface discard rate by the following method includes:

wherein the number of lost uplink air interfaces per terminal includes: when the fragmentation message is transmitted at an air interface, the number of PDCP messages which are not successfully responded is not received, and the PDCP messages which are not successfully responded are not retransmitted in the tested period; the number of successful transmissions per terminal in uplink includes: the PDCP message number of the tested terminal which is transmitted at the air interface and receives successful response.

Further, when the loss rate measurement object is a downlink per-QCI air interface discard rate, the measuring, by the terminal, the downlink per-QCI air interface discard rate by the following method includes:

wherein the downlink per-QCI air interface loss number includes: the total number of the serial numbers of the lost downlink PDCP messages; the total number of messages transmitted over the downlink air interface per QCI includes: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

Further, when the loss rate measurement object is a downlink per-bearer air interface drop rate, the measuring, by the terminal, the downlink per-bearer air interface drop rate by the following method includes:

wherein the number of lost downlink air interfaces per bearer includes: the total number of the serial numbers of the lost downlink PDCP messages; the total number of the downlink air interface transmission messages per bearer comprises: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

Further, when the loss rate measurement object is a downlink per-port air interface discarding rate, the measuring, by the terminal, the downlink per-port air interface discarding rate by the following method includes:

wherein the number of downlink air interface losses per terminal includes: the total number of the serial numbers of the lost downlink PDCP messages; the total number of downlink air interface transmission messages of each terminal comprises: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

The method according to any of claims 1 to 12, wherein the first message is a radio resource connection management, RRC, message.

According to another aspect of the present invention, there is provided an apparatus for minimization of drive tests MDT of loss rate, at a terminal side, comprising: a receiving module, configured to receive a second message carrying an MDT configuration for minimization of drive test sent by a network element, where the MDT configuration is a parameter for performing MDT measurement on a loss rate; a measurement module for measuring a loss rate according to the MDT configuration; and the reporting module is used for reporting the result of the measurement of the loss rate.

Further, when the loss rate measurement trigger condition is a service type requiring loss rate measurement, the measurement module is further configured to perform loss rate measurement on the loss rate measurement object when the service indicated by the service type starts, and terminate the loss rate measurement on the loss rate measurement object when the service indicated by the service type terminates.

Further, when the loss rate measurement object identifies a QCI discard rate for uplink per quality of service class, the measuring module measures the uplink per QCI discard rate by:

Further, when the loss rate measurement object is an uplink per-bearer drop rate, the measuring module measures the uplink per-bearer drop rate by:

Further, when the loss rate measurement object is an uplink per-terminal discard rate, the measuring module measures the uplink per-terminal discard rate by the following method:

Further, when the loss rate measurement object is an uplink per-QCI air interface discard rate, the measuring module measures the uplink per-QCI air interface discard rate by the following method:

Further, when the loss rate measurement object is an uplink per-bearer air interface drop rate, the measuring module measures the uplink per-bearer air interface drop rate by the following method:

Further, when the loss rate measurement object is an uplink per-terminal air interface discard rate, the measuring module measures the uplink per-terminal air interface discard rate by the following method:

Further, when the loss rate measurement object is a downlink per-QCI air interface discard rate, the measuring module measures the downlink per-QCI air interface discard rate by the following method:

Further, when the loss rate measurement object is a downlink per-bearer air interface drop rate, the measuring module measures the downlink per-bearer air interface drop rate by the following method:

Further, when the loss rate measurement object is a downlink per-port empty discard rate, the measuring module measures the downlink per-port empty discard rate by:

Further, the second message is a radio resource connection management RRC message.

According to the method and the device, the terminal is adopted to receive the first message which is sent by the network element and carries the MDT configuration, wherein the MDT configuration is used as a parameter for MDT measurement of the loss rate, the loss rate is measured according to the MDT configuration, and the result of the MDT measurement is reported, so that the problem that the terminal cannot provide the MDT measurement of the loss rate minimization in the related technology is solved, and the blank of the related technology is filled.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a flowchart of a method of minimization of drive tests, MDTs, of loss rate according to an embodiment of the present invention;

fig. 2 is a block diagram of an apparatus for minimization of drive tests MDT for loss rate according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a signaling-based MDT measurement method according to an alternative embodiment of the present invention;

fig. 4 is a schematic diagram of a management-based MDT measurement method according to an alternative embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 is a flowchart of a method for minimization of drive tests for loss rate MDT according to an embodiment of the present invention, and as shown in fig. 1, the method includes the steps of:

step S102: a terminal receives a first message which is sent by a network element and carries MDT configuration, wherein the MDT configuration is a parameter for MDT measurement of a loss rate;

step S104: the terminal measures the loss rate according to the MDT configuration;

step S106: and the terminal reports the loss rate to measure the loss rate.

Through the above steps S102 to S106 in this embodiment, a method is adopted in which a terminal receives a first message carrying MDT configuration for minimization of drive test, which is sent by a network element, where the MDT configuration is a parameter for performing MDT measurement on a loss rate, the loss rate is measured according to the MDT configuration, and a result of the measurement on the loss rate is reported, so that a problem that the terminal cannot provide MDT measurement for minimization of drive test of the loss rate in the related art is solved, and thus a gap in the related art is filled.

For the MDT configuration involved in this embodiment, an optional implementation of this embodiment may include: loss rate measurement object, loss rate measurement cycle, loss rate measurement trigger condition. It should be noted that the parameters of the MDT configuration may also include other parameters, which are only the preferred MDT configuration parameters in this embodiment, and may be adjusted accordingly in other application scenarios as needed.

Based on the MDT configuration, in an optional implementation manner of this embodiment, when the loss rate measurement trigger condition is a service type that needs to perform loss rate measurement, the terminal performs loss rate measurement on the loss rate measurement object when a service indicated by the service type starts, and terminates the loss rate measurement on the loss rate measurement object when the service indicated by the service type terminates. In a specific application scenario, the service type may be a voice type of MMTEL or a video call type of MMTEL.

There are various loss rate measurement objects involved in this embodiment, and the following may be included in alternative embodiments of this embodiment:

the first method is as follows:

when the loss rate measurement object identifies the discard rate per uplink qos class, the terminal may measure the discard rate per uplink qos class by the following method:

wherein, discarding the number of messages per QCI comprises: the Packet Data Convergence Protocol (PDCP) message number that is not transmitted over the air interface, or the following: the number of the messages of the QCI discarded by the terminal in a Radio Link Control (RLC for short), a PDCP (packet data convergence protocol) layer and a Media Access Control (MAC) layer does not include the message loss caused by switching.

In addition, the total number of messages per QCI is the total number of PDCP SDU messages of the QCI transferred to the PDCP layer by the PDCP upper layer protocol of the UE side in unit time.

That is, the uplink per-QCI discard rate in the first mode refers to: the rounding value of the ratio of the discarded number of the measured QCI to the total number of the measured QCI messages in the measurement period; the discarded message refers to the message discarding of the PDCP layer; the mode integrates the rate of the messages discarded by the same QCI service on different radio bearers on a certain terminal due to congestion and flow management in a measurement time period.

The second method comprises the following steps:

when the loss rate measurement object is an uplink per-bearer discard rate, the terminal measures the uplink per-bearer discard rate by the following method:

the number of discarded messages per bearer comprises the number of PDCP messages which are not transmitted at an air interface, or the number of the discarded messages of the bearer at the RLC, PDCP and MAC layers of the terminal, and the reason for discarding does not comprise the message loss caused by switching; in addition, the total number of messages per bearer is the total number of PDCP SDU messages on the bearer transferred to the PDCP layer by the PDCP upper layer protocol on the UE side in a unit time.

That is, the uplink per bearer discard rate in the second mode is: the rounding value of the ratio of the discarded number of the tested bearing and the total number of the tested bearing messages in the measurement period is referred to; the discarded message refers to the message discarding of the PDCP layer; that is, the mode shows the rate of the messages discarded by the same QCI service on the same radio bearer on a certain terminal in the measurement time period due to congestion and traffic management.

The third method comprises the following steps:

when the loss rate measurement object is an uplink per-terminal discarding rate, the terminal measures the uplink per-terminal discarding rate by the following method:

the number of discarded messages of each terminal comprises the number of messages PDCP messages which are not transmitted at an air interface, or the number of discarded messages of the terminal at RLC, PDCP and MAC layers, and the reason for discarding does not comprise the message loss caused by switching.

In addition, the total number of messages of each terminal is the total number of PDCP SDU messages transferred to the bearer of the PDCP layer by the PDCP upper layer protocol of the UE side in unit time.

That is, the uplink per-terminal discard rate in the third mode refers to an integer value of the ratio of the discard number of the terminal messages to be measured to the total number of the terminal messages to be measured in the measurement period; the discarded message refers to the message discarding of the PDCP layer; the third mode represents the rate of the messages discarded by a certain terminal service due to congestion and flow management in a measurement time period.

Mode IV

When the loss rate measurement object is an uplink per-QCI air interface discard rate, the terminal measures the uplink per-QCI air interface discard rate by the following method:

the number of lost packets per air interface of each uplink per QCI comprises the number of PDCP messages which are transmitted at the air interface but do not receive successful response, and the PDCP messages are not retransmitted in the tested period, and if the PDCP messages are transmitted in other cells due to switching and the like, the lost packets can not be counted.

In addition, the successful transmission number per uplink QCI comprises the PDCP message number of the detected QCI which is transmitted at the air interface and receives the successful response.

That is, the uplink per-QCI loss rate in the fourth mode refers to: rounding the ratio of the loss number of the measured QCI and the total number of the air interface transmission messages of the measured QCI in the measurement period; the discarded message refers to the message discarding of the PDCP layer; the method embodies the rate of lost messages caused by air interface transmission failure on the same QCI service on different radio bearers of a certain terminal in a measurement time period.

Mode five

When the loss rate measurement object is an uplink per-bearer air interface discard rate, the terminal measures the uplink per-bearer air interface discard rate by the following method:

the number of lost data per air interface of each uplink bearer includes the number of PDCP messages which are transmitted at the air interface but have not received successful response, and the PDCP messages are not retransmitted in the detected period, and if the PDCP messages are transmitted in other cells due to switching and the like, the lost data can not be counted.

In addition, the successful transmission number of each uplink bearer comprises the number of PDCP messages of the detected bearer which is transmitted at the air interface and receives the successful response.

That is, the uplink per-bearer loss rate in the fifth mode refers to an integer value of the ratio of the number of the measured bearer losses to the total number of the measured bearer air interface transmission messages in the measurement period; the discarded message refers to the message discarding of the PDCP layer; the method embodies the rate of lost messages caused by air interface transmission failure of the same QCI service on the same radio bearer on a certain terminal in a measurement time period.

Mode six

When the loss rate measurement object is an uplink per-terminal air interface discard rate, the terminal measures the uplink per-terminal air interface discard rate by the following method:

the number of lost air interfaces of each uplink terminal comprises the number of PDCP messages which are transmitted at the air interfaces but have not received successful responses, and the PDCP messages are not retransmitted in the detected period, and if the PDCP messages are transmitted in other cells due to switching and the like, the lost number can not be counted.

In addition, the successful transmission number of each uplink terminal comprises the PDCP message number of the tested terminal which is transmitted on the air interface and receives the successful response.

That is, the uplink per-terminal loss rate in the sixth mode refers to an integer value of the ratio of the message loss number of the tested terminal to the total number of air interface transmission messages of the tested terminal in the measurement period; the message of (2) is the message discarding of the PDCP layer; the sixth mode represents the rate of messages lost due to air interface transmission failure in a measurement time period when all QCI services borne by a certain terminal are failed.

Mode seven

When the loss rate measurement object is a downlink per-QCI air interface discard rate, the terminal measures the downlink per-QCI air interface discard rate by the following method:

wherein, the per-downlink per-QCI air interface loss number comprises: the total number of the sequence numbers of the lost downlink PDCP messages can not be counted in the lost number if the PDCP messages are transmitted in other cells due to switching and the like.

In addition, the total number of messages transmitted over the downlink air interface per QCI includes: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

That is, the loss rate per downlink QCI air interface in the seventh mode refers to a rounded value of the ratio of the number of QCI lost to be measured to the total number of QCI air interface transmission messages to be measured in the measurement period; the message of (2) is the message discarding of the PDCP layer; the seventh mode represents the rate of lost messages caused by air interface transmission failure on the same QCI service on different radio bearers on a terminal in the downlink direction in a measurement time period.

Mode eight

When the loss rate measurement object is a downlink per-bearer air interface discard rate, the terminal measures the downlink per-bearer air interface discard rate by the following method:

wherein, the number of lost downlink air interfaces per bearer includes: the total number of the sequence numbers of the lost downlink PDCP messages can not be counted in the lost number if the PDCP messages are transmitted in other cells due to switching and the like.

In addition, the total number of the downlink air interface transmission messages carried by each bearer comprises the total number of the downlink-sent PDCP sequence numbers and the total number of the unsuccessfully-transmitted PDCP sequence numbers.

That is, the loss rate per downlink bearer air interface in the eighth embodiment means: rounding the ratio of the number of the loss of the tested bearing and the total number of the air interface transmission messages of the tested bearing in the measurement period; the message of (2) is the message discarding of the PDCP layer; the method embodies the rate of the lost messages caused by the air interface transmission failure of the same QCI service on the same radio bearer on a certain terminal in the downlink direction in the measurement time period.

The ninth mode

When the loss rate measurement object is a downlink per-port air interface discarding rate, the terminal measures the downlink per-port air interface discarding rate by the following method:

the downlink air interface loss number of each terminal comprises a lost downlink PDCP message serial number, and if the PDCP message is transmitted in other cells due to switching and the like, the lost number cannot be counted.

In addition, the total number of downlink air interface transmission messages of each terminal comprises a total PDCP serial number sent by downlink, including a PDCP serial number which is not successfully transmitted.

The downlink per-terminal air interface loss rate in the ninth mode refers to: rounding the ratio of the number of the loss of the tested bearing and the total number of the air interface transmission messages of the tested bearing in the measurement period; the message of (2) is the message discarding of the PDCP layer; the ninth mode represents the rate of the lost messages due to the air interface transmission failure of all QCI services on all radio bearers on a certain terminal in the downlink direction within the measurement time period.

It should be noted that, the first message involved in this embodiment may be a radio resource connection management RRC message.

In this embodiment, a device for minimization of drive test MDT with a loss rate is further provided, and the device is used to implement the foregoing embodiments and optional embodiments, which have already been described and are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 2 is a block diagram of an apparatus for minimization of drive tests MDT of loss rate according to an embodiment of the present invention, as shown in fig. 2, the apparatus is located at a terminal side, and includes: a receiving module 22, configured to receive a second message carrying an MDT configuration for minimization of drive test sent by a network element, where the MDT configuration is a parameter for performing MDT measurement on a loss rate; a measuring module 24 coupled to the receiving module 22, configured to measure the loss rate according to the MDT configuration; and the reporting module 26 is coupled with the measuring module 24 and is used for reporting the result of the measurement performed by the loss rate.

Optionally, the MDT configuration related to this embodiment may include: loss rate measurement object, loss rate measurement cycle, loss rate measurement trigger condition.

Based on the MDT configuration, when the loss rate measurement trigger condition is a service type requiring loss rate measurement, the measurement module 24 is further configured to perform loss rate measurement on the loss rate measurement object when the service indicated by the service type starts, and terminate the loss rate measurement on the loss rate measurement object when the service indicated by the service type terminates.

In an alternative implementation manner of this embodiment, the MDT measurement involved in this embodiment may include the following manners:

in a first mode

When the loss rate measurement object identifies the QCI discard rate for the uplink per quality of service class, the measurement module 24 measures the uplink per QCI discard rate by the following method:

wherein, discarding the number of messages per QCI comprises: the packet data convergence protocol PDCP message number that is not transmitted over the air interface, or includes: the terminal controls the number of the discarded messages of the QCI on a radio link control layer RLC, a PDCP layer and a medium access control MAC layer; and the total number of the messages per QCI is the total number of PDCP service data unit SDU messages of the QCI transferred to the PDCP layer by the PDCP upper layer protocol of the terminal side in unit time.

Mode two

When the loss rate measurement object is the uplink per-bearer discard rate, the measurement module 24 measures the uplink per-bearer discard rate by the following method:

wherein, the number of discarded messages per bearer comprises: the number of PDCP messages that are not delivered over the air interface, or including: the number of the messages of the load discarded by the terminal on the RLC, PDCP and MAC layers; the total number of the messages carried by each bearer is the total number of the PDCP SDU messages carried by the PDCP upper layer protocol of the terminal side to the PDCP layer in unit time.

Mode III

When the loss rate measurement object is an uplink per-terminal discard rate, the measurement module 24 measures the uplink per-terminal discard rate by the following method:

wherein, the number of discarded messages per terminal comprises: the number of PDCP messages that are not delivered over the air interface, or including: the number of discarded messages of the terminal on the RLC, PDCP and MAC layers; and the total number of the messages of each terminal is the total number of the PDCP SDU messages of the terminal transferred to the PDCP layer by the PDCP upper layer protocol of the terminal side in unit time.

Mode IV

When the loss rate measurement object is the uplink per-QCI air interface discard rate, the measuring module 24 measures the uplink per-QCI air interface discard rate by the following method:

wherein, the uplink per-QCI air interface loss number comprises: when the fragmentation message is transmitted at an air interface, the number of the PDCP messages which are not successfully responded is not received, and the PDCP messages which are not successfully responded are not retransmitted in the tested period; the number of successful transmissions per QCI in uplink includes: the PDCP message number of the detected QCI which is transmitted at an air interface and receives successful response.

Mode five

When the loss rate measurement object is an uplink per-bearer air interface discard rate, the measurement module 24 measures the uplink per-bearer air interface discard rate by the following method:

wherein, the number of lost uplink air interfaces per bearer comprises: when the fragmentation message is transmitted at an air interface, the number of PDCP messages which are not successfully responded is not received, and the PDCP messages which are not successfully responded are not retransmitted in the tested period; the successful transmission number per uplink bearer comprises: the number of PDCP messages of the tested bearer which are transmitted over the air interface and receive successful response.

Mode six

When the loss rate measurement object is an uplink per-terminal air interface discard rate, the measurement module 24 measures the uplink per-terminal air interface discard rate by the following method:

wherein, the number of air interface losses of each uplink terminal comprises: when the fragmentation message is transmitted at an air interface, the number of PDCP messages which are not successfully responded is not received, and the PDCP messages which are not successfully responded are not retransmitted in the tested period; the successful transmission number of each uplink terminal comprises the following steps: the PDCP message number of the tested terminal which is transmitted at the air interface and receives successful response.

Mode seven

When the loss rate measurement object is a downlink per-QCI air interface discard rate, the measuring module 24 measures the downlink per-QCI air interface discard rate by the following method:

wherein, the downlink per-QCI air interface loss number comprises: the total number of the serial numbers of the lost downlink PDCP messages; the total number of messages transmitted per QCI downlink air interface comprises the following steps: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

Mode eight

When the loss rate measurement object is a downlink per-bearer air interface discard rate, the measuring module 24 measures the downlink per-bearer air interface discard rate by the following method:

wherein, the number of lost downlink air interfaces per bearer includes: the total number of the serial numbers of the lost downlink PDCP messages; the total number of messages transmitted over each bearer downlink air interface includes: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

The ninth mode

When the loss rate measurement object is a downlink per-port air interface discarding rate, the measuring module 24 measures the downlink per-port air interface discarding rate by the following method:

wherein, the downlink air interface loss number of each terminal comprises: the total number of the serial numbers of the lost downlink PDCP messages; the total number of messages transmitted over the downlink air interface of each terminal comprises: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

In addition, in another optional implementation manner of this embodiment, the second message related to this apparatus embodiment may be a radio resource connection management RRC message.

The invention is illustrated below with reference to the drawings and alternative embodiments of the invention;

alternative embodiment 1

The optional embodiment is used to illustrate how the base station implements the delay MDT measurement in the immediate minimization of drive test based on the signaling MDT.

Fig. 3 is a schematic diagram of a signaling-based MDT measurement method according to an alternative embodiment of the present invention, in which an MDT function is in a minimization of drive test MDT in an immediate MDT operating mode, as shown in fig. 3, the method includes the steps of:

step S302: the network management system EMS triggers the minimization of drive test, and sends a configuration message of the minimization of drive test;

the message can be a Tracking Session Activation (TSA) message to a location register (HSS) network element, wherein the message contains a measurement requirement for triggering acquisition of an MMTEL service loss rate of a certain terminal;

step S304: after the location register HSS retrieves that the UE enters the attachment state, sending a minimized configuration message to a core network element where the UE is located;

wherein, if the network is an E-UTRAN network, the core network element is an MME; if the network condition is UTRAN network condition, the core network element is SGSN or MSC server; for example: when the core network element is an MME, the message carrying the MDT configuration is an Update location answer (Update location answer) message, wherein the message comprises a measurement requirement for triggering acquisition delay;

step S306: the core network element sends a minimization of drive test configuration message to an access network element;

wherein, if the network is an E-UTRAN network, the access network element is eNB, and the message carrying the MDT configuration is an Initial context setup request (Initial context setup request) message; if the network is a UTRAN PS domain, the access network element is an RNC, and the message carrying the minimized drive test configuration is a core network request tracking (CN invoke Trace) message; the message contains a measurement requirement for triggering acquisition of the position information; or the core network element sends a special message containing a measurement requirement for obtaining the loss rate;

step S308: the access network element receives the MDT configuration message and configures the MDT configuration message to the terminal through the RRC message;

the configuration comprises configurations of a measurement object of the loss rate, a measurement period of the loss rate, a measurement trigger condition of the loss rate and the like;

step S310: the terminal performs the minimization measurement of the loss rate according to the configuration;

after the terminal receives the MDT configuration, identifying the measurement requirement including obtaining the loss rate, starting the measurement of uplink and/or downlink according to the configuration, wherein the measurement object comprises the specific load and/or the loss rate measurement of the whole terminal according to the specific QCI;

if the configuration includes a loss rate measurement trigger condition, it is necessary to wait for the service related to the MMTEL to start the loss rate measurement, and when the MMTEL service is terminated, the corresponding loss rate measurement is also terminated. For example, the indication in the configuration is to measure only for the voice service of the MMTEL, and the terminal may obtain the bearer information and the QCI information corresponding to the MMTEL type according to a non-access stratum protocol (NAS), so that the terminal may start the loss rate measurement when the bearer corresponding to the MMTEL is established or the bearer to which the corresponding QCI belongs is established;

the uplink loss rate measurement and the downlink loss rate measurement can be performed simultaneously;

step S312: the terminal reports the MDT measurement result to the base station;

the terminal reports the MDT measurement result to the base station through an RRC message;

step S316: and the base station reports the MDT measurement result.

Wherein, the base station reports the loss rate measurement result of the terminal to a Trace Collection Entity (TCE).

Alternative embodiment two

The alternative embodiment is used to illustrate how the terminal implements the MDT measurement of the loss rate in the MDT-based immediate minimization of drive test.

Fig. 4 is a schematic diagram of a management-based MDT measurement method according to an alternative embodiment of the present invention, in which the MDT function is in an operation mode of immediately minimizing drive test MDT, as shown in fig. 4, the method includes the steps of:

step S402: the EMS of the network management system triggers the minimization of drive tests, and sends a configuration request (minimization of drive tests configuration message) to an access network element through a southbound interface, for example: an eNB or RNC; the message contains the measurement requirement for acquiring the MMTEL service loss rate information;

step S404: the access network element selects a proper terminal and sends an MDT configuration message to the terminal; in this embodiment, based on managed MDT, the access network eNB or RNC selects an appropriate terminal or terminals; the access network sends the MDT configuration information to the terminal through the existing message, and the message contains the measurement requirement for acquiring the MMTEL service loss rate information;

the information message configured by the base station to the terminal is the same message related to the Radio Resource management measurement, and specifically, in the E-UTRAN network, the information message may be a Radio Resource Control (RRC) connection reconfiguration message.

Step S406: after receiving the MDT configuration message, the terminal starts loss rate measurement aiming at the MMTEL service;

according to the configuration, the terminal can start uplink and downlink measurement at the same time, or only perform uplink or downlink measurement.

Step S408: and the terminal reports the measurement result to a tracking collection entity TCE through the base station.

The terminal can select to report according to the own measuring condition, and can also report in combination with other measurements, for example, after the terminal provides the position information, the terminal can combine the measured loss rate result with the position information to report together; the base station provides to the TCE according to the report of the terminal.

As can be seen, the present embodiment may support the terminal to perform measurement for the QCI or the bearer or various loss rates and discard rates of the terminal, and report the measurement result to the network; in addition, the method of the present embodiment can support uplink and/or downlink measurements to meet the actual requirement of MDT.

In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only an alternative embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for Minimization of Drive Tests (MDTs) for loss rate, comprising:

a terminal receives a first message which is sent by a network element and carries MDT configuration, wherein the MDT configuration is a parameter for MDT measurement of a loss rate;

the terminal measures the loss rate according to the MDT configuration;

the terminal reports the loss rate to measure;

wherein the MDT configuration comprises: loss rate measurement object, loss rate measurement period, loss rate measurement trigger condition; and when the loss rate measurement triggering condition is a service type needing loss rate measurement, the terminal measures the loss rate of the loss rate measurement object when the service indicated by the service type starts, and terminates the loss rate measurement of the loss rate measurement object when the service indicated by the service type is terminated.

2. The method of claim 1, wherein when the loss rate measurement object identifies a QCI discard rate for uplink per quality of service class, the terminal measuring the uplink per QCI discard rate by:

3. The method according to claim 1, wherein when the loss rate measurement object is an uplink per-bearer drop rate, the terminal measures the uplink per-bearer drop rate by:

4. The method of claim 1, wherein when the loss rate measurement object is an uplink per-terminal discard rate, the terminal measuring the uplink per-terminal discard rate by:

5. The method of claim 1, wherein when the loss rate measurement object is an uplink per-QCI air interface discard rate, the measuring, by the terminal, the uplink per-QCI air interface discard rate by:

6. The method according to claim 1, wherein when the loss rate measurement object is an uplink per-bearer air interface drop rate, the terminal measures the uplink per-bearer air interface drop rate by:

7. The method according to claim 1, wherein when the loss rate measurement object is an uplink per-terminal air interface discard rate, the terminal measuring the uplink per-terminal air interface discard rate by:

8. The method of claim 1, wherein when the loss rate measurement object is a downlink per-QCI air interface discard rate, the measuring, by the terminal, the downlink per-QCI air interface discard rate by:

9. The method according to claim 1, wherein when the loss rate measurement object is a downlink per-bearer air interface drop rate, the terminal measuring the downlink per-bearer air interface drop rate by:

wherein the number of lost downlink air interfaces per bearer comprises: the total number of the serial numbers of the lost downlink PDCP messages; the total number of downlink per-bearer air interface transmission messages includes: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

10. The method according to claim 1, wherein when the loss rate measurement object is a downlink per-port air interface drop rate, the terminal measures the downlink per-port air interface drop rate by:

wherein the downlink per-terminal air interface loss number includes: the total number of the serial numbers of the lost downlink PDCP messages; the total number of downlink per-terminal air interface transmission messages comprises: the total number of the total PDCP sequence numbers sent in the downlink and the total number of the PDCP sequence numbers which are not successfully transmitted.

11. The method according to any of claims 1 to 10, wherein the first message is a radio resource connection management, RRC, message.

12. An apparatus for Minimization of Drive Tests (MDT) of loss rate at a terminal side, comprising:

a receiving module, configured to receive a second message carrying an MDT configuration for minimization of drive test sent by a network element, where the MDT configuration is a parameter for performing MDT measurement on a loss rate;

a measurement module for measuring a loss rate according to the MDT configuration;

a reporting module, configured to report a result of the measurement performed on the loss rate;

wherein the MDT configuration comprises: loss rate measurement object, loss rate measurement period, loss rate measurement trigger condition; when the loss rate measurement triggering condition is a service type requiring loss rate measurement, the measurement module is further configured to perform loss rate measurement on the loss rate measurement object when a service indicated by the service type starts, and terminate the loss rate measurement on the loss rate measurement object when the service indicated by the service type terminates.

13. The apparatus of claim 12, wherein when the loss rate measurement object identifies a QCI drop rate for uplink per quality of service class, the measurement module measures the uplink per QCI drop rate by:

14. The apparatus of claim 12, wherein when the loss rate measurement object is an uplink per bearer drop rate, the measuring module measures the uplink per bearer drop rate by:

15. The apparatus of claim 12, wherein when the loss rate measurement object is an uplink per-terminal discard rate, the measuring module measures the uplink per-terminal discard rate by:

16. The apparatus of claim 12, wherein when the loss rate measurement object is an uplink per-QCI air interface discard rate, the measuring module measures the uplink per-QCI air interface discard rate by:

17. The apparatus according to claim 12, wherein when the loss rate measurement object is an uplink per-bearer air interface drop rate, the measuring module measures the uplink per-bearer air interface drop rate by:

18. The apparatus according to claim 12, wherein when the loss rate measurement object is an uplink per-terminal air interface discard rate, the measuring module measures the uplink per-terminal air interface discard rate by:

19. The apparatus of claim 12, wherein when the loss rate measurement object is a downlink per-QCI air interface discard rate, the measuring module measures the downlink per-QCI air interface discard rate by:

20. The apparatus according to claim 12, wherein, when the loss rate measurement object is a downlink per-bearer discard rate, the measuring module measures the downlink per-bearer discard rate by:

21. The apparatus of claim 12, wherein when the loss rate measurement object is a downlink per-port empty discard rate, the measuring module measures the downlink per-port empty discard rate by:

22. The apparatus according to any of claims 12 to 21, wherein the second message is a radio resource connection management, RRC, message.