JP2012222619A - Mobile communication method and wireless base station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer only a desired "Measurement Report" for "Immediate MDT" to a trace collection node TCE.SOLUTION: A mobile communication method includes: a step in which a wireless base station eNB transfers a "Measurement Report" for "Immediate MDT" received from a mobile station UE existing within a measurement target area to a trace collection node TCE; and a step in which the wireless base station eNB does not transfer a "Measurement Report" for "Immediate MDT" received from a mobile station UE existing outside of the measurement target area to the trace collection node TCE.

Description

  The present invention relates to a mobile communication method and a radio base station.

  The LTE (Long Term Evolution) method collects measurement results of predetermined radio quality in a real environment from mobile stations UE in a measurement target area, thereby reducing labor and cost due to a driving test (MDT (MDT)). "Minimization of Drive Tests, measurement running test)" is defined.

  Among such MDTs, in the “Immediate MDT”, the mobile station UE in the “Connected state” has a predetermined response to the network according to the “Measurement Configuration Information” for the current RRM (Radio Resource Management). “Measurement Report” for “Immediate MDT” including the measurement result of radio quality and the location information (Location Information) of the mobile station UE is transmitted.

3GPP TR36.805, “Evolved Universal Terrestrial Radio Access (E-UTRA); Study on minimization of drive-tests in next generation networks” 3GPP TS 37.320, “Radio measurement collection for MDT” 3GPP TS 36.331, “Radio Resource Control (RRC) Protocol Specification” 3GPP TS 36.413, “S1 Application Protocol (S1AP)”

  However, in the conventional “Immediate MDT”, when the radio base station eNB receives “Measurement Report” for “Immediate MDT” from the mobile station UE outside the measurement target area of the MDT, the desired “Immediate MDT” Although there is no “Measurement Report” for use, there is a problem in that the “Measurement Report” for “Immediate MDT” is transferred to the trace collection node TCE (Trace Collection Entity).

  Accordingly, the present invention has been made in view of the above-described problems, and a mobile communication method and a wireless communication method that can transfer only a “Measurement Report” for a desired “Immediate MDT” to the trace collection node TCE. The purpose is to provide a base station.

  According to a first aspect of the present invention, there is provided a mobile communication method in which a mobile station in a connected state transmits a measurement report for a measurement traveling test to a radio base station based on measurement setting information, A station transferring a measurement report for the measurement running test received from the mobile station in a measurement target area to a predetermined node; and the radio base station transmits the measurement target to the predetermined node. And a step of not transferring the measurement report for the measurement running test received from the mobile station outside the area.

  A second feature of the present invention is a radio base station used in a mobile communication system configured so that a mobile station in a connected state transmits a measurement report for a measurement running test based on measurement setting information. A transfer unit configured to transfer the measurement report for the measurement running test received from the mobile station in the measurement target area to the predetermined node, and the transfer unit includes: The gist is that the measurement report for the measurement running test received from the mobile station outside the measurement target area is not transferred to a predetermined node.

  As described above, according to the present invention, there is provided a mobile communication method and a radio base station that can transfer only a “Measurement Report” for a desired “Immediate MDT” to the trace collection node TCE. Can do.

1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention. FIG. 3 is a functional block diagram of a radio base station according to the first embodiment of the present invention. It is a figure for demonstrating operation | movement of the mobile communication system which concerns on the 1st Embodiment of this invention. 5 is a flowchart showing an operation of the radio base station according to the first embodiment of the present invention.

(Mobile communication system according to the first embodiment of the present invention)
A mobile communication system according to a first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the mobile communication system according to the present embodiment includes a trace collection node TCE, an O & M (Operation & Maintenance) server (operation and maintenance server), a mobility management node MME (Mobility Management Entity), a radio base station Station eNB.

  In the mobile communication system according to the present embodiment, the “connected state” mobile station UE makes a “Measurement Report” for “Immediate MDT” to the radio base station eNB based on “Measurement Configuration”, that is, a predetermined value. A “Measurement Report” including the measurement result of the radio quality and the location information of the mobile station UE is transmitted.

  In the mobile communication system according to the present embodiment, the mobile station UE in the “Connected state” not only satisfies the measurement condition defined by “Measurement Configuration”, Even when outside the measurement target area, a “Measurement Report” for “Immediate MDT” is transmitted to the radio base station eNB.

  As illustrated in FIG. 2, the radio base station eNB includes a reception unit 11, a determination unit 12, a transfer unit 13, and a transmission unit 14.

  The receiving unit 11 is configured to receive “Measurement Report” from the mobile station UE.

  In addition, the receiving unit 11 is configured to receive “Trace Activation” including “MDT Configuration” from the O & M server via the S1 message or the X2 message.

  The “MDT Configuration” is configured to specify measurement execution conditions and measurement items for “Immediate MDT” and parameters related to “Measurement Report”.

  Further, the “MDT Configuration” is configured to designate a measurement target area by “Area scope”.

  “Area scope” may specify a measurement target area on a cell basis, may specify a measurement target area on a tracking area (TA) base, or may be a measurement target area as all areas. May be specified.

  The determination unit 12 is configured to determine whether or not the “Measurement Report” received from the mobile station UE should be transferred to the trace collection node TCE.

  Here, the determination unit 12 may be configured to determine whether the mobile station UE is in the measurement target area or whether the mobile station UE is outside the measurement target area.

  Further, the determination unit 12 may be configured to determine whether or not the “Measurement Report” received from the mobile station UE is “Measurement Report” for “Immediate MDT”.

  For example, the determination unit 12 determines whether the “Measurement Report” received from the mobile station UE is the “Measurement Report” for “Immediate MDT” based on the “MDT Configuration” for “Immediate MDT” received from the O & M server. It may be configured to determine whether or not.

  Specifically, the determination unit 12 receives from the mobile station UE the “Measurement ID” assigned when the “Measurement Configuration” for “Immediate MDT” is set for the mobile station UE using the RRC message. When the “Measurement ID” included in the “Measurement Report” matches, it is configured to determine whether the “Measurement Report” received from the mobile station UE is the “Measurement Report” for “Immediate MDT”. It may be.

  Here, the “Measurement Configuration” for “Immediate MDT” for the mobile station UE is changed to “MDT Configuration” for “Immediate MDT” specified by “MDT Configuration” received from the O & M server by the radio base station eNB. Set based on.

  The transfer unit 13 is configured to transfer the “Measurement Report” for “Immediate MDT” received from the mobile station UE in the measurement target area to the trace collection node TCE.

  Further, the transfer unit 13 is configured not to transfer the “Measurement Report” for “Immediate MDT” received from the mobile station UE outside the measurement target area to the trace collection node TCE.

  In addition, when a predetermined setting is performed, the transfer unit 13 performs “Measurement Report” for “Immediate MDT” received from the mobile station UE outside the measurement target area with respect to the trace collection node TCE. It may be configured to forward.

  The transmission unit 14 instructs the mobile station UE in the “Connected state” to measure the predetermined radio quality, that is, transmits the “RRCConnectionReconfiguration message” including the “Measurement Configuration” that defines the measurement conditions. It is configured.

  Further, even when it is detected that the mobile station UE has moved out of the measurement target area, the transmission unit 14 does not instruct the mobile station UE to delete the “Measurement Configuration” described above. It may be configured.

  Hereinafter, the operation of the mobile communication system according to the present embodiment will be described with reference to FIG.

  In the example of FIG. 3, the radio base station eNB transmits, in advance, an “RRCConnectionReconfiguration message” including “Measurement Configuration” to the mobile station UE based on the “MDT Configuration” received from the O & M server. Shall.

  As shown in FIG. 3, in step S101, when the mobile station UE in the “Connected state” is in the measurement target area, and satisfies the measurement condition defined by the “Measurement Configuration”, the radio base station eNB In response to this, a “Measurement Report” for “Immediate MDT” is transmitted.

  In step S102, the radio base station eNB transfers the “Measurement Report” for “Immediate MDT” received from the mobile station UE in the measurement target area to the trace collection node TCE.

  In step S103, the mobile station UE goes out of the measurement target area from within the measurement target area.

  At this time, the radio base station eNB does not instruct the mobile station UE to delete the above “Measurement Configuration” even when the mobile station UE detects that the mobile station UE has moved out of the measurement target area. Shall.

  In step S104, even when the mobile station UE in the “Connected state” is outside the measurement target area, if the measurement condition defined by the “Measurement Configuration” is satisfied, the radio base station eNB Send “Measurement Report” for “Immediate MDT”.

  In step S105, the radio base station eNB does not transfer the “Measurement Report” for “Immediate MDT” received from the mobile station UE outside the measurement target area to the trace collection node TCE.

  Here, with reference to FIG. 4, the operation | movement at the time of the radio base station eNB which concerns on this embodiment performing the above-mentioned determination is demonstrated.

  As illustrated in FIG. 4, when the radio base station eNB receives “Measurement Report” from the mobile station UE in step S201, in step S202, the radio base station eNB transmits “MDT Configuration” from the O & M server via the S1 message or the X2 message. It is determined whether or not “Trace Activation” including the message is received.

  In the case of “Yes”, the operation proceeds to step S203, and in the case of “No”, the operation proceeds to step S205 and ends without performing any special processing.

  In step S203, the radio base station eNB determines whether or not the “Measurement Report” received from the mobile station UE is “Measurement Report” for “Immediate MDT”.

  Specifically, the radio base station eNB uses the “Measurement ID” included in the “Measurement Report” received from the mobile station UE to perform “Measurement Configuration” for the “Immediate MDT” for the mobile station UE using the RRC message. It is determined whether or not it matches the “Measurement ID” assigned when “

  In the case of “Yes”, the operation proceeds to step S204, and in the case of “No”, the operation proceeds to step S205 and ends without performing any special processing.

  In step S204, the radio base station eNB determines whether the “Area scope” designated by the “MDT Configuration” received from the O & M server designates the measurement target area on a cell basis or a tracking area basis. judge.

  In the case of “Yes”, the operation proceeds to step S206, and in the case of “No”, the operation proceeds to step S205 and ends without performing any special processing.

  In step S206, the radio base station eNB determines whether or not the mobile station UE is in the measurement target area.

  Specifically, the radio base station eNB determines whether or not the mobile station UE is connected to the cell in the above-mentioned “Area scope”.

  If “Yes”, the operation proceeds to step S207, and if “No”, the operation proceeds to step S208.

  In step S207, the radio base station eNB transfers the “Measurement Report” received from the mobile station UE, that is, the “Measurement Report” for “Immediate MDT” to the trace collection node TCE.

  In step S208, the radio base station eNB does not transfer the “Measurement Report” received from the mobile station UE to the trace collection node TCE.

  According to the mobile communication system according to the present embodiment, the radio base station eNB transfers only “Measurement Report” for “Immediate MDT” received from the mobile station UE in the measurement target area to the trace collection node TCE. Therefore, it is possible to avoid performing unnecessary processing of extracting and deleting unnecessary “Measurement Report” in the trace collection node TCE.

  The characteristics of the present embodiment described above may be expressed as follows.

  The first feature of the present embodiment is that the mobile station UE in the “Connected state (connection state)” uses the “Measured Configuration Information” for the “immediate MDT” with respect to the radio base station eNB. Of “Measurement Report (Measurement Report)” of the radio base station eNB with respect to the trace collection node TCE (predetermined node) “Immediate” received from the mobile station UE in the measurement target area. The step of transferring “Measurement Report” for “MDT” and the “Measurement Report” for “Immediate MDT” received by the radio base station eNB from the mobile station UE outside the measurement target area to the trace collection node TCE. And summarized in that a step does not forward ".

  In the first feature of the present embodiment, even when the radio base station eNB detects that the mobile station UE has moved out of the measurement target area, the radio base station eNB performs the above-described “Measurement Configuration” on the mobile station UE ”May not be instructed to be deleted.

  In the first feature of the present embodiment, the radio base station eNB is based on “MDT Configuration” (measurement setting information for measurement running test) for “Immediate MDT” received from the O & M server (operation and maintenance server). It may be determined whether or not the “Measurement Report” received from the mobile station UE is a “Measurement Report” for “Immediate MDT”.

  The second feature of the present embodiment is that the mobile station UE in the “Connected state” is configured to transmit “Measurement Report” for “Immediate MDT” based on “Measurement Configuration”. Is a radio base station eNB used in the above, and is configured to transfer “Measurement Report” for “Immediate MDT” received from the mobile station UE in the measurement target area to the trace collection node TCE. The transfer unit 13 transfers the “Measurement Report” for “Immediate MDT” received from the mobile station UE outside the measurement target area to the trace collection node TCE. It is summarized as that is configured to no.

  In the second feature of the present embodiment, the mobile station UE is instructed to delete the “Measurement Configuration” even when it is detected that the mobile station UE has moved out of the measurement target area. You may comprise the transmission part 14 comprised so that it may not.

  In the second feature of the present embodiment, based on the “MDT Configuration” for “Immediate MDT” received from the O & M server, the “Measurement Report” received from the mobile station UE is “Measurement Report” for “Immediate MDT”. The determination unit 12 may be configured to determine whether or not.

  Note that the operations of the O & M server, the trace collection node TCE, the mobility management node MME, the radio base station eNB, and the mobile station UE described above may be implemented by hardware or implemented by a software module executed by a processor. Or it may be implemented by a combination of both.

  The software module includes a RAM (Random Access Memory), a flash memory, a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electronically Erasable and Programmable ROM, a Hard Disk, a Registered ROM, a Hard Disk Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.

  Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the O & M server, the trace collection node TCE, the mobility management node MME, the radio base station eNB, or the mobile station UE. In addition, the storage medium and the processor may be provided as discrete components in the O & M server, the trace collection node TCE, the mobility management node MME, the radio base station eNB, and the mobile station UE.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

UE ... mobile station MME ... mobile management node TCE ... trace collection node eNB ... radio base station 11 ... reception unit 12 ... determination unit 13 ... transfer unit 14 ... transmission unit

Claims (6)

A connected mobile station is a mobile communication method for transmitting a measurement report for a measurement running test to a radio base station based on measurement setting information,
The wireless base station forwards a measurement report for the measurement running test received from the mobile station in a measurement target area to a predetermined node;
A step of not transmitting the measurement report for the measurement running test received from the mobile station outside the measurement target area to the predetermined node.   The radio base station does not instruct the mobile station to delete the measurement setting information even when the mobile station detects that the mobile station has moved out of the measurement target area. The mobile communication method according to claim 1.   The radio base station determines whether the measurement report received from the mobile station is the measurement report for the measurement driving test based on the measurement setting information for the measurement driving test received from the operation and maintenance server. The mobile communication method according to claim 1. A mobile station in a connected state is a radio base station used in a mobile communication system configured to transmit a measurement report for a measurement driving test based on measurement setting information,
A transfer unit configured to transfer a measurement report for the measurement running test received from the mobile station in a measurement target area to a predetermined node;
The wireless base station, wherein the transfer unit is configured not to transfer the measurement report for the measurement running test received from the mobile station outside the measurement target area to the predetermined node.   A transmission unit configured not to instruct the mobile station to delete the measurement setting information even when the mobile station detects that the mobile station has gone out of the measurement target area; The radio base station according to claim 4.   A determination configured to determine whether the measurement report received from the mobile station is the measurement report for the measurement traveling test based on the measurement setting information for the measurement traveling test received from the operation and maintenance server The radio base station according to claim 4, further comprising a unit.

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