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HTC INVENTION DISCLOSURE
`
`Title of Invention Method and Apparatus for logged MDT reporting in a wireless communication system
`
`ABSTRACT
`
`BACKGROUND OF INVENTION
`
`Title
`Method and Apparatus for logged MDT reporting in a wireless communication system
`
`Background of the Invention
`
`1. Field of the Invention
`The present invention relates to a method utilized in a wireless communication and
`
`communication device thereof, and more particularly, to a method to report MDT logs
`
`in a wireless communication system and communication device thereof.
`
`2. Description of the Prior Art
`
`The prior art of MDT can be found in [l].
`
`AUE configured to perform Logged MDT measurements in IDLE indicates the
`availability of MDT measurements, , by means of a one bit indicator, in
`RRCConnectionSetupComplete message during connection establishment, as shown
`in Figure 1. Furthermore, the indicator (possibly updated) will be provided within
`E-UTRAN handover and re-establishment, and UTRAN procedures SRNC (SRNC
`relocation involving the change of). In any case, the UE will include the indication at
`every transition to RRC Connected mode even though the logging period has not
`ended.
`The network can decide to retrieve the logged measurements based on this indication.
`In case logged MDT measurements are retrieved before the completion of the
`pre-defined logging duration, the reported measurement results can be deleted, but
`MDT measurement logging will continue according to ongoing Logged MDT
`configuration.
`Editor's note: It is FFS whether a guideline, allowing UE to clear non-retrieved measurements, will
`be specified for the case when network will not retrieve the measurements for a certain
`period of time after the logging duration timer expires.
`
`For Logged MDT the measurement reporting is triggered by on-demand mechanism,
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`i.e. the UE is asked by the network to send the collected measurement logs via RRC
`signalling. The reporting may occur in different cells than which the measurement
`configuration is signalled.
`The logged measurement report consists of measurement results for the serving cell
`(the measurement object and the measurement quantity), time stamp and location
`information.
`Editor's note: It is FFS whether reporting from other neighbours is required.
`The measurement report is self contained, i.e. the RAN node is able to interpret the
`Logged MDT reporting results even if it does not have access to the logged MDT
`measurement configuration.
`Location information is based on available location information in the UE. Thus, the
`Logged MDT measurements are tagged by the UE with location data in the following
`manner:
`ECGI of the serving cell when the measurement was taken is always included
`
`GNSS location information is included if available in the UE when the measurement was
`taken
`
`if GNSS location information is not available when the measurement was taken, the UE
`includes RF fingerprint infonnation consisting of: PCI/PSC + RSRP/CPICH RSCP for up to
`6 intra-frequency neighbour cells
`
`Editor's note: It is FFS when GNSS location infonnation is considered available for the logged
`measurement, e.g. the acceptable time lag.
`
`For Immediate MDT, measurement results should be tagged with available location
`information in the same way as for Logged MDT in Idle mode. Normal RRC
`signalling in (E-) UTRA procedures are enhanced to support this.
`
`Issue 1
`
`A network retrieves MDT logs stored in a UE ( e.g. as shown in Figure 1 ). Before the
`
`UE completes sending MDT logs ( e.g. UEinformationResponse), the UE is triggered
`
`to perform a cell update procedure or receives a handover command or a SRNS
`
`relocation command (e.g. RRCConnectionReconfiguration in E-UTRAN, or RADIO
`
`BEARER RECONFIGURATION, TRANSPORT CHANNEL RECONFIGURATION
`
`PHYISCAL CHANNEL RECONFIGURATION, UTRAN MOBILITY
`
`INFORMATION in UTRAN). It is not clear how to handle the MDT procedure and
`
`the handover or SRNS relocation procedure.
`
`Issue 2
`
`MDT logs are transmitted on SRB2 (E-UTRAN) and SRB4 (UTRAN). MDT logs
`
`may contain thousands of bytes or even more so messages transmitted on the SRB2 or
`
`SRB4 (e.g. NAS messages) may be blocked for transmission until transmission of the
`
`MDT logs finishes. This increases delay on transmission of NAS message.
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`Issue 3
`
`AUE may be triggered to send a Signalling Connection Release Indicator message. A
`
`network receives the Signalling Connection Release Indicator message and performs
`
`signalling connection release and RRC connection release procedure to the UE. If the
`
`network is retrieving MDT logs from the UE, the network will lose the MDT logs due
`
`to the RRC connection release procedure.
`
`Reference
`[1] R2-103456
`
`[2] 3GPP TS 36.331
`
`[3] 3GPP TS 25.331
`
`SUMMARY OF INVENTION
`
`Solution 1
`
`During a MDT reporting procedure (e.g. UEinformation procedure), when a UE is
`
`triggered to perform a cell update procedure, or receives a handover command a
`
`SRNS relocation command or a RRC connection release procedure, the UE stops the
`
`MDT reporting procedure.
`
`Solution 1.1
`
`Following solution 1, the UE considers the MDT reporting procedure as not
`
`performed before.
`
`Solution 1.2
`
`Following solution 1, the UE continues the MDT reporting procedure when
`
`completing the handover, SRNS relocation or cell update procedure.
`
`The UE continuing the MDT reporting procedure comprises that the UE transmits
`
`MDT logs which has not been received by a network or the UE transmits the all MDT
`
`logs.
`
`Solution 1.3
`
`Following solution 1.1, the UE considering the MDT reporting procedure as not
`
`performed before comprises that the UE keeps MDT logs in storage before
`
`completing the MDT procedure.
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`Solution 1.4
`
`Following solution 1.1 or 1.2, the UE indicates MDT logs available in a handover
`
`complete, SRNS relocation complete a cell update message or RRC connection setup
`
`complete message.
`
`To resolve issue 1 with solution 1, the UE stops or continues the MDT procedure
`
`when the UE completes the handover or SRNS relocation procedure.
`
`Solution 2
`
`During a MDT reporting procedure ( e.g. UEinformation procedure), a network sends
`
`a command (e.g. RRC message) to stop the MDT reporting procedure.
`
`Solution 2.1
`
`Following solution 2, when the UE receives the command, the UE stops the MDT
`
`reporting.
`
`With solution 2, the network can stop the UE MDT reporting when the network wants
`
`to trigger the handover or SRNS relocation or receives the cell update request from
`
`the UE. Therefore, the network can guarantee the UE does not have a running MDT
`
`procedure collided with the handover, SRNS relocation or cell update procedures.
`
`Solution 3
`
`Messages ( e.g. NAS messages) transmitted on a SRB used for transmitting MDT logs
`
`have higher priority than MDT logs.
`
`Solution 3 resolves issue 2.
`
`Solution 4
`
`When a UE performs a RRC connection re-establishment procedure, the UE indicates
`
`MDT logs available in RRCConnectionReconfiguraitonComplete message responding
`
`to a RRCConnectionReconfiguration which is the first
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`RRCConnectionReconfiguration after successful completion of the RRC connection
`
`re-establishment procedure.
`
`Solution 5
`
`MDT logs are transmitted in a plurality of messages by a UE. A message of the
`
`plurality of messages containing MDT logs has a flag indicating containing last part
`
`of the MDT logs.
`
`With the flag, a network knows the UE finishes MDT logs reporting when receiving
`
`the message with the flag.
`
`Solution 6
`
`A network transmits a first request message to request the UE to transmit MDT logs.
`
`The UE transmits a response message containing the MDT logs and an indicator to
`
`indicate whether the response message contains the last part of MDT logs or indicates
`
`whether the UE has more MDT logs.
`
`Solution 6.1
`
`Following solution 6, the network receives the indicator and determines whether the
`
`UE has MDT logs which have not been transmitted to the network.
`
`Solution 6.2
`
`Following solution 6.1, if the network determines the UE has more MDT logs ace, the
`
`network sends a second request message to request the UE to transmit MDT logs.
`
`Solution 6.3
`
`Following solution 6.1, if the network determines the UE has no more MDT logs, the
`
`network stops sending a second request message to request the UE to transmit MDT
`
`logs.
`
`Solution 7
`
`AUE suspends transmission of a request message ( e.g. Signalling Connection Release
`
`Indication message or RRC Connection Release Request message) to a network when
`
`the UE is performing MDT logs reporting procedure (e.g. UI Information procedure).
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`Solution 7 .1
`
`Following solution 7, when or after the UE finishes the MDT reporting procedure, the
`
`UE transmits the request message to the network.
`
`Solution 7 resolves issue 3.
`
`Solution 8
`
`A network is retrieving MDT logs from the UE ( e.g. via UE Information procedure).
`
`If the network receives a request message (e.g. Signalling Connection Release
`
`Indication message or RRC Connection Release Request message), the network
`
`suspends signalling connection release procedure/RRC connection release procedure.
`
`Solution 8.1
`
`Following solution 8, the network resumes connection release procedure/RRC
`
`connection release procedure when or after the network completes retrieving the MDT
`
`logs (e.g. finishes UE Information procedure).
`
`Solution 8 resolves issue 3.
`
`Solution 9
`
`A network transmits a first request message to request a UE to transmit MDT logs.
`
`The UE transmit a response message containing a first part of MDT logs or indicating
`
`"no more MDT logs available". If the network receives the response message
`
`indicating "no more MDT logs available", the network stops transmitting a second
`
`request message to request the UE to transmit a second part of MDT logs.
`
`The response message may implicitly indicate "more MDT logs available" if the
`
`message contains a part of MDT logs and may implicitly indicate "no more MDT logs
`
`available" if the message contains no MDT logs.
`
`Solution 9.1
`
`Following solution 9, if the network receives the response message containing the first
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`part of MDT logs or indicating "logging not finished yet", the network transmits a
`
`second request message to request the UE to transmit second part of MDT logs.
`
`Solution 9 .2
`
`Following solution 9, the UE removes, deletes, clears or invalidates the first part of
`
`MDT logs if the UE transmits the first part of MDT logs in the response message.
`
`Solution 9.3
`
`Following solution 9, if the network receives the response message indicating "no
`
`more MDT logs available" and "logging finished", the network stops transmitting a
`
`second request message to request the UE to transmit a second part of MDT logs.
`
`Solution 10
`
`MDT logs are transmitted in a plurality of messages ( e.g. UEinformationResponse
`
`messages) by a UE. A message of the plurality of messages indicates at least one of
`
`"more MDT logs available", "no more MDT logs available" or "logging finished",
`
`"logging not finished yet".
`
`With the indication, a network knows the UE finishes MDT logs reporting or logging
`
`when receiving the message. The message may implicitly indicate "more MDT logs
`
`available" if the message contains a part of MDT logs and may implicitly indicate "no
`
`more MDT logs available" if the message contains no MDT logs. The maximum of
`
`message size may be fixed or decided by maximum of a lower layer message size ( e.g.
`
`maximum of PDCP PDU size).
`
`Solution 10.1
`
`Following solution 10, the UE removes, deletes, clears or invalidates a first part of
`
`MDT logs if the UE transmits the first part of MDT logs in a message belonging to
`
`the plurality of messages.
`
`KEYWORDS
`
`LTE
`
`MDT (Minimization of Drive Tests)
`
`Logged MDT
`
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`Title of Invention
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`I Method and Apparatus for logged MDT reporting in a wireless communication system
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`APPLICATION
`NUMBER
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`FILING or
`37l(c)DATE
`08/31/2010
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`Chih-Hsiang Wu, Taoyuan County, TAIWAN;
`Power of Attorney:
`Winston Hsu--41526
`
`Permission to Access - A proper Authorization to Permit Access to Application by Participating Offices
`(PTO/SB/39 or its equivalent) has been received by the USPTO.
`
`If Required, Foreign Filing License Granted: 08/31/2010
`The country code and number of your priority application, to be used for filing abroad under the Paris Convention,
`is US 61 /378,400
`Projected Publication Date: None, application is not eligible for pre-grant publication
`Non-Publication Request: No
`Early Publication Request: No
`Title
`
`Method and Apparatus for logged MDT reporting in a wireless communication system
`
`PROTECTING YOUR INVENTION OUTSIDE THE UNITED STATES
`
`Since the rights granted by a U.S. patent extend only throughout the territory of the United States and have no
`effect in a foreign country, an inventor who wishes patent protection in another country must apply for a patent
`in a specific country or in regional patent offices. Applicants may wish to consider the filing of an international
`application under the Patent Cooperation Treaty (PCT). An international (PCT) application generally has the same
`effect as a regular national patent application in each PCT-member country. The PCT process simplifies the filing
`page 1 of 3
`
`Samsung Ex. 1007
`12 of 24
`
`

`

`of patent applications on the same invention in member countries, but does not result in a grant of "an international
`patent" and does not eliminate the need of applicants to file additional documents and fees in countries where patent
`protection is desired.
`
`Almost every country has its own patent law, and a person desiring a patent in a particular country must make an
`application for patent in that country in accordance with its particular laws. Since the laws of many countries differ
`in various respects from the patent law of the United States, applicants are advised to seek guidance from specific
`foreign countries to ensure that patent rights are not lost prematurely.
`
`Applicants also are advised that in the case of inventions made in the United States, the Director of the US PTO must
`issue a license before applicants can apply for a patent in a foreign country. The filing of a U.S. patent application
`serves as a request for a foreign filing license. The application's filing receipt contains further information and
`guidance as to the status of applicant's license for foreign filing.
`
`Applicants may wish to consult the USPTO booklet, "General Information Concerning Patents" (specifically, the
`section entitled "Treaties and Foreign Patents") for more information on timeframes and deadlines for filing foreign
`patent applications. The guide is available either by contacting the USPTO Contact Center at 800-786-9199, or it
`can be viewed on the USPTO website at http://www.uspto.gov/web/offices/pac/doc/general/index.html.
`
`For information on preventing theft of your intellectual property (patents, trademarks and copyrights), you may wish
`to consult the U.S. Government website, http://www.stopfakes.gov. Part of a Department of Commerce initiative,
`this website includes self-help "toolkits" giving innovators guidance on how to protect intellectual property in specific
`countries such as China, Korea and Mexico. For questions regarding patent enforcement issues, applicants may
`call the U.S. Government hotline at 1-866-999-HAL T (1-866-999-4158).
`
`LICENSE FOR FOREIGN FILING UNDER
`
`Title 35, United States Code, Section 184
`
`Title 37, Code of Federal Regulations, 5.11 & 5.15
`
`GRANTED
`
`The applicant has been granted a license under 35 U.S.C. 184, if the phrase "IF REQUIRED, FOREIGN FILING
`LICENSE GRANTED" followed by a date appears on this form. Such licenses are issued in all applications where
`the conditions for issuance of a license have been met, regardless of whether or not a license may be required as
`set forth in 37 CFR 5.15. The scope and limitations of this license are set forth in 37 CFR 5.15(a) unless an earlier
`license has been issued under 37 CFR 5.15(b). The license is subject to revocation upon written notification. The
`date indicated is the effective date of the license, unless an earlier license of similar scope has been granted under
`37 CFR 5.13 or 5.14.
`
`This license is to be retained by the licensee and may be used at any time on or after the effective date thereof unless
`it is revoked. This license is automatically transferred to any related applications(s) filed under 37 CFR 1.53(d). This
`license is not retroactive.
`
`The grant of a license does not in any way lessen the responsibility of a licensee for the security of the subject matter
`as imposed by any Government contract or the provisions of existing laws relating to espionage and the national
`security or the export of technical data. Licensees should apprise themselves of current regulations especially with
`respect to certain countries, of other agencies, particularly the Office of Defense Trade Controls, Department of
`page 2 of 3
`
`Samsung Ex. 1007
`13 of 24
`
`

`

`State (with respect to Arms, Munitions and Implements of War (22 CFR 121-128)); the Bureau of Industry and
`Security, Department of Commerce (15 CFR parts 730-774); the Office of Foreign AssetsControl, Department of
`Treasury (31 CFR Parts 500+) and the Department of Energy.
`
`NOT GRANTED
`
`No license under 35 U.S.C. 184 has been granted at this time, if the phrase "IF REQUIRED, FOREIGN FILING
`LICENSE GRANTED" DOES NOT appear on this form. Applicant may still petition for a license under 37 CFR 5.12,
`if a license is desired before the expiration of 6 months from the filing date of the application. If 6 months has lapsed
`from the filing date of this application and the licensee has not received any indication of a secrecy order under 35
`U.S.C. 181, the licensee may foreign file the application pursuant to 37 CFR 5.15(b).
`
`page 3 of 3
`
`Samsung Ex. 1007
`14 of 24
`
`

`

`BRIEF DESCRIPTION OF DRAWINGS
`
`FIGURES
`
`UE
`
`E-UTRAN
`
`UEJnformationRequest
`
`UEln ormationRes onse
`
`Figure 1: MDT measurement reporting for Logged MDT (E-UTRA)
`
`UE
`
`UTRAN/E(cid:173)
`UTRAN
`
`-----------UElnformationReques.~i--------------1
`
`f-----------UElnoformationResponse (MDT logs;,__ ________ ~_
`
`f-----------UElnoformationResponse (MDT logs)>----------~-
`
`e-------UElnoformationResponse (MDT logs, no more logs available)---
`
`Figure 2: Example of Solution 5
`
`8/10
`
`Samsung Ex. 1007
`15 of 24
`
`

`

`UE
`
`UTRAN/E(cid:173)
`UTRAN
`
`""'c::::-----------UElnformationRequest---------------,
`
`t---------UElnoformationResponse (MDT logs l - - - - - - - - -
`
`""'c::::-----------UElnformationRequest---------------,
`
`t---------UElnoformationResponse (MDT logs l - - - - - - - - -
`
`-----------UElnformationReques,__ _________ -----j
`
`t-----UElnoformationResponse (MDT logs, no more logs availablel-------11~
`
`Figure 3: Example of Solution 5/Solution 6
`
`UE
`
`No more
`req

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