TWI475900B - Method of controlling minimization of drive tests - Google Patents

Description

Control method for minimizing drive test

The invention relates to a method for controlling minimization of drive test, in particular to a method for a base station to control a user terminal to modify or set a record-based minimization drive test in an idle mode.

The 3rd Generation Partnership Project (3GPP) has developed a universal mobile telecommunications system (UMTS) that uses wideband code division multiple access (WCDMA). The wireless access method is characterized by providing high spectrum utilization efficiency, high coverage, high quality and high rate of multimedia data transmission. A universal terrestrial radio access network (UTRAN) in a universal mobile telecommunications system can be regarded as a radio access network, which includes a plurality of base stations (Node-B, NB) for use with a plurality of base stations (Node-B, NB) User equipment (UE) communicates. In addition, in order to improve the general mobile telecommunications system, 3GPP further develops a long term evolution (LTE) system to meet the increasing demands of users. The Long Term Evolution (LTE) system is considered to provide a new wireless interface and wireless network architecture that provides high data transfer rates, low latency, packet optimization, and improved system capacity and coverage, including a number of evolved base stations (evolved Nodes). -B, eNB) is an evolved universal terrestrial radio access network (E-UTRAN), which is used to communicate with the UE on the one hand, and to handle non-processing on the other hand. The core network (CN) controlled by the non-access stratum (NAS) communicates, and the core network includes a servo gateway and a mobility management entity (MME). Device.

In order to enable the UE to receive services without being affected by severe disconnection or severe signal degradation, the wireless communication system (such as the Universal Mobile Telecommunications System or the Long Term Evolution System) needs to properly deploy the base station to provide The client has no gaps and good quality coverage. Therefore, the operator of the wireless communication system must spend considerable manpower and material resources to perform the quality measurement of the base station's signal products. Before the base station is deployed, the measurement results can be optimized and planned. There are many ways to perform measurements, such as measuring the strength and/or quality of signals at different times and locations. A more economical approach is to perform measurements by the user in the wireless communication system and to return the measurement results to the base station to provide the measurement results required by the operator. In other words, when a large number of clients perform measurement and return measurement results to the base station, the operator can use these measurement results to optimize and plan the base station deployment, thereby reducing the measurement requirements. Human and material resources. Therefore, the minimization of drive test (MDT) is defined in the 3GPP specifications, including both immediate minimization (LMT) and record-based minimization (logged MDT).

The client performs an instant minimization of the drive test in the connected mode, such as reference signal received power (RSRP), reference signal received quality (RSRQ), power margin ( Power headroom (PH), upload signal strength (upllink signal strength), or signal to interference and noise ratio (SINR), etc., and transmit the measurement result to the base station when the return condition is met.

For the record-based minimization drive test, the UE receives the Logged Measurement Configuration message transmitted by the base station in the connected mode, which includes the minimum measurement length, measurement interval or measurement parameter. MDT configuration. When the user enters the idle mode, the record-based configuration information can be used to perform the record-based minimization of the drive test and store the measurement results. When the amount of data exceeding the measurement time length or the measurement result exceeds a predetermined value, the user terminal stops performing the record-based minimization drive test, and transmits the measurement result to the base station after switching to the link mode.

In the prior art, when the UE operates in the idle mode according to the recorded measurement configuration message, if the network requires modification or setting of the minimized drive test configuration for a specific reason, the user needs to first switch to the link mode. The network side then issues an instruction to modify/set the minimization of the drive test configuration. In the prior art, the network cannot directly control the operation of the UE in the idle mode, and the UE needs to switch between the link mode and the idle mode, thereby increasing power consumption and wasting network resources.

The invention provides a method for controlling minimization of drive test, which comprises a user operating in an idle mode according to a minimized drive test configuration; when receiving a modified message transmitted from a base station, the user The terminal updates the relevant parameters of the minimized drive test configuration directly in the idle mode according to the modification message; and the user performs one or more specified records in the idle mode according to the updated minimized drive test configuration. Minimize drive test.

The present invention further provides a method for controlling minimization of drive test, comprising: a user terminal operating in an idle mode according to a minimized drive test configuration; when receiving a setting message transmitted from a base station, the The user directly establishes relevant parameters in the specific minimized drive test configuration according to the setting message in the idle mode; and the user performs the updated mode in the idle mode according to the updated minimized drive test configuration. Or multiple specified records to minimize drive test.

For a user terminal and a base station in a wireless communication system, the present invention provides a method for controlling record-based minimization of road test in an idle mode, and the user terminal can directly transmit the message according to the base station without switching the operation mode. Modify/set the minimized drive test configuration and then perform a record-based minimization drive test. In the present invention, the wireless communication system can be a general mobile telecommunication system or a long term evolution system, which is composed of a network end and a plurality of user terminals. In a general mobile telecommunications system, the network side can be a universal terrestrial global wireless access network, which can include a plurality of base stations. In a long term evolution system, the network may be an evolved universal terrestrial global radio access network, which may include a plurality of evolved base stations. The client can be a device such as a mobile phone, a notebook computer, a tablet computer, an e-book, and a portable computer system. However, the above is only an embodiment of the present invention and does not limit the scope of the present invention.

1 is a flow chart of a method for modifying a record-based minimization drive test in an idle mode according to a first embodiment of the present invention, which includes the following steps:

Step 110: The UE operates in an idle mode in accordance with a specific minimized drive test configuration.

Step 120: The UE receives the modification message sent by the base station in the idle mode.

Step 140: The UE updates the relevant parameters of the specific minimized drive test configuration according to the modification message in the idle mode.

Step 160: The UE performs one or more specified record-based minimization drive tests according to the updated specific minimized drive test configuration.

2 is a flow chart of a method for setting a record-based minimization drive test in an idle mode according to a second embodiment of the present invention, which includes the following steps:

Step 110: The UE operates in an idle mode in accordance with a specific minimized drive test configuration.

Step 130: The UE receives the setting message transmitted by the base station in the idle mode.

Step 150: The UE establishes relevant parameters in the specific minimized drive test configuration according to the setting message in the idle mode.

Step 160: The UE performs one or more specified record-based minimization drive tests according to the updated specific minimized drive test configuration.

When the client is in the connected mode the previous time, the base station can transmit a recorded measurement configuration message containing information related to the specific minimized drive test configuration. In step 110, the client can operate in accordance with a particular minimized drive test configuration, such as performing one or more record-based minimization drive tests.

If the network requires the user to change or add one or more record-based minimization drive tests for specific reasons (such as wishing to collect other base station information or other parameters of the base station), then the base station will send out at step 120. A message is modified to the client, or a setting message is sent to the client at step 130.

According to the 3GPP specifications, when the UE is in the idle mode, the base station can transmit a paging message to the UE through a paging control channel (PCCH). The call message contains information such as the CN domain indicator, client identification, call range, and call reason. In the embodiment of the present invention, the modification message may be an over-the-air (OTA) call message, and the reason for the call may be “modified record-based minimization drive test”. The reason for the "modified record-based minimization drive test" can include modifying one or more specified record-based minimization drive test messages. Similarly, the setting message can be an over-the-air downloading call message, and the reason for the call can be “set record-based minimization drive test”. The reason for the call to set the record-based minimization drive test can include setting one or more specified record-based minimization drive test messages.

According to the 3GPP specifications, when the UE is in the connected mode, the base station can transmit a recorded measurement configuration message, which includes a minimization of the drive test configuration such as the measurement time length, the measurement interval or the measurement parameter. In the embodiment of the present invention, the modification message may be an over-the-air recorded measurement configuration message, wherein the specific parameter of the record type configuration information is set to be related to modifying one or more specified records to minimize the drive test. . Similarly, the modification message can be an on-the-air recorded record configuration configuration message, wherein the specific parameters of the record-based configuration configuration message are set to be related to setting one or more specified record-based minimization drive tests.

In step 140, the UE updates the relevant parameters of the specific minimized drive test configuration according to the modification message in the idle mode. In step 150, the UE establishes relevant parameters in the specific minimized drive test configuration according to the setting message in the idle mode. In step 160, the UE performs one or more specified record-based minimization drive tests in accordance with the updated specific minimized drive test configuration.

In the present invention, after receiving the correction/setting message transmitted from the base station, the UE directly updates the specific minimized drive test configuration in the idle mode, and then performs one or more specified record-based minimization paths. Measurement. The present invention can reduce power consumption and avoid waste of network because the user terminal does not need to switch between the link mode and the idle mode, but directly corrects/adds one or more specified record type minimization drive tests in the idle mode. Resources.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

110~160. . . step

1 and 2 are flowcharts showing a method of modifying a record type minimization drive test in an idle mode in an embodiment of the present invention.

110~160. . . step

Claims (10)

A method for controlling a minimization of drive test (MDT), comprising: a user terminal operating in an idle mode according to a minimized drive test configuration (MDT configuration); When a message is sent from a base station, the UE updates the relevant parameters of the minimized drive test configuration directly in the idle mode according to the modification message; and the minimum of the update of the user terminal in the idle mode according to the update mode. The drive test configuration is used to perform one or more specified record-based minimized drive tests (logged MDT). The method of claim 1, wherein the client performs one or more record-based minimization drive tests in the idle mode in accordance with the minimized drive test configuration. The method of claim 2, wherein the user is operating in a connected mode to receive a record associated with the minimized drive test configuration from the base station prior to entering the idle mode LoggedMeasurementConfiguration message. The method of claim 1, wherein the modification message is that the base station transmits a paging message through a paging control channel (PCCH), and one of the call messages is related to the call reason. Modifying the one or more specified records to minimize the drive test. The method of claim 1, wherein: the modified message is a recorded measurement configuration message comprising a setting to modify the one or more specified record-based minimized drive tests. A method for controlling minimization of a drive test, comprising: a user terminal operating in an idle mode according to a minimized drive test configuration; when receiving a setting message transmitted from a base station, the user terminal directly Establishing relevant parameters in the specific minimized drive test configuration according to the setting message in the idle mode; and executing, by the user in the idle mode, one or more according to the updated minimized drive test configuration Specifies a record-based minimization drive test. The method of claim 6, wherein the user terminal performs one or more record-based minimization drive tests in the idle mode in accordance with the minimized drive test configuration. The method of claim 7, wherein: before entering the idle mode, the user terminal operates in a connected mode to receive, from the base station, a recorded measurement set associated with the minimized drive test configuration. State message. The method of claim 6, wherein: the establishing message is that the base station transmits a call message through a call control channel, and one of the call messages is related to the addition of the one or more specified records. Minimize drive test. The method of claim 6, wherein the setup message is a recorded measurement configuration message including a setting to add the one or more specified record-based minimized drive tests.