WO2005109685A1 - 検査装置、解析/表示装置、検査システム - Google Patents
検査装置、解析/表示装置、検査システム Download PDFInfo
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- WO2005109685A1 WO2005109685A1 PCT/JP2005/008197 JP2005008197W WO2005109685A1 WO 2005109685 A1 WO2005109685 A1 WO 2005109685A1 JP 2005008197 W JP2005008197 W JP 2005008197W WO 2005109685 A1 WO2005109685 A1 WO 2005109685A1
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- Prior art keywords
- wireless
- data
- inspection
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- analysis
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- 238000007689 inspection Methods 0.000 title claims abstract description 86
- 238000004891 communication Methods 0.000 claims abstract description 52
- 239000000284 extract Substances 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 6
- 108010003272 Hyaluronate lyase Proteins 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/23—Indication means, e.g. displays, alarms, audible means
Definitions
- Inspection device analysis Z display device, inspection system
- the present invention relates to an inspection apparatus for a wireless section, an analysis Z display apparatus for analyzing and displaying inspection results for a wireless section and a wired section, and an inspection system including these apparatuses.
- Conventional inspections include (1) a wireless section (Uu) between the communication terminal apparatus and the base station apparatus, (2) a wired section (Iu) between the base station apparatus and the wireless network control apparatus, 3) Wired sections (Iub) between the wireless network controller and the core network are individually performed.
- an inspection apparatus receives a signal transmitted from a communication terminal apparatus or a base station apparatus, performs demodulation and decoding using wireless parameters, and converts the obtained data. Analyzes and displays messages sent between devices. This allows the user to specify whether the cause of the failure that occurred in the wireless section is the base station device or the communication terminal device (for example, Patent Document 1).
- A. A method of specifying a wireless parameter specified by a user to the inspection apparatus, and B.
- the wireless parameters are obtained by
- Patent Document 1 JP 2004-72665 A
- the location where the inspection device exists is different from the base station device or the communication terminal device.
- the inspection device cannot receive the signal transmitted to the communication terminal under the same conditions as the communication terminal device, and there is a possibility that the estimation of the wireless parameter is erroneous.
- a spreading code must be estimated by despreading to obtain wireless parameters, and it takes time to estimate parameters.
- the inspection of the wired section in (2) can detect that a failure has occurred in the wireless section, but complete transmission and reception of information between the base station apparatus and the communication terminal apparatus is not possible. Since it is not recorded in the log of the upper layer, the user cannot specify the cause of the failure occurring in the wireless section in either the base station apparatus or the communication terminal apparatus.
- An object of the present invention is to provide an inspection apparatus, an analysis Z display apparatus, and an inspection system that can easily perform an inspection of a wireless section in a real environment and that can easily identify a failure by a user. It is to provide.
- an inspection apparatus of the present invention is an inspection apparatus that inspects a wireless section between a communication terminal apparatus and a base station apparatus, and is an inspection apparatus obtained by inspecting a wired section.
- Wireless parameter acquisition means for acquiring a wireless parameter relating to a target communication terminal device; and wireless parameter selection for selecting a wireless parameter corresponding to a reception time of a signal transmitted from the communication terminal device to be tested or the base station device.
- decoding means for decoding the signal demodulated in and obtaining transport channel data.
- the analysis Z display device of the present invention comprises: analysis means for analyzing the transport channel data decoded by the detection device and converting it into message data; and display means for displaying the message data. Take.
- the inspection system of the present invention includes a wired section inspection apparatus that inspects a wired section to obtain transport channel data, and a wireless parameter related to a communication terminal device to be inspected obtained by inspecting the wired section.
- a radio section inspection apparatus that obtains transport channel data by examining a radio section by using the above-mentioned method, and message data obtained by analyzing the transport channel data obtained by the two inspection apparatuses are chronologically or call-by-call.
- a display device for analysis z that is displayed in line with the sequence of z.
- wireless parameters can be reliably acquired in a short time, and an inspection of a wireless section in an actual environment can be easily performed. Furthermore, by displaying wired messages and wireless messages in a time-series or call-by-call sequence, the user can easily identify a failure.
- FIG. 1 shows a configuration of a monitoring system according to an embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of a wireless section inspection apparatus according to one embodiment of the present invention.
- FIG. 3 is a block diagram showing a configuration of a wired section inspection apparatus according to one embodiment of the present invention. 4] A block diagram showing the configuration of the analysis Z display device according to one embodiment of the present invention.
- FIG. 5 is a diagram showing an example of message data input to the analysis Z display device according to one embodiment of the present invention.
- FIG. 6 is a diagram showing an example of message data input to the analysis Z display device according to one embodiment of the present invention.
- FIG. 7 is a diagram showing an example of message data input to the analysis Z display device according to one embodiment of the present invention.
- FIG. 8 is a diagram showing an example of message data input to the analysis Z display device according to one embodiment of the present invention.
- FIG. 9 is a flowchart showing an operation procedure of the monitoring system according to one embodiment of the present invention.
- FIG. 10 is a diagram showing a sequence for establishing a DCH defined by 3GPP
- FIG. 12 is a sequence diagram displayed on an analysis Z display device according to one embodiment of the present invention.
- FIG. 13 is a sequence diagram displaying a message input to the analysis Z display device according to one embodiment of the present invention.
- FIG. 14 is a sequence diagram displayed on an analysis Z display device according to an embodiment of the present invention.
- the inventor has determined that signals transmitted and received in the wireless section are reliably recorded in the network, and that the information recorded in the network is extracted by an inspection device that inspects the wired section. Focusing on the points that can be achieved, the present invention has been made.
- the gist of the present invention is to extract a wireless parameter from the data force obtained by the inspection of the wired section and to inspect the wireless section using the extracted wireless parameter. It is another object of the present invention to display the wired message and the wireless message obtained by the inspection in a time series or a sequence for each call.
- the communication system to be tested performs W-CDMA wireless communication in a wireless section.
- the wireless parameters include a channel type, a scramble code, a channelization code, a spreading factor, a time at which a slot format message is obtained, and the like used in each wireless layer.
- FIG. 1 is a diagram showing a configuration of a monitoring system according to an embodiment of the present invention.
- an inspection apparatus 100 is an inspection apparatus according to the present embodiment, and uses a wireless parameter extracted from data strength obtained by an inspection between wired sections and a communication terminal apparatus 50 and a base station.
- the state of wireless communication with the station device 150 is checked.
- the inspection device 200 inspects the state of wired communication between the base station device 150 and the radio network controller (RNC) 250.
- the inspection device 300 inspects the state of wired communication between the wireless network control device 250 and the switching center (MSC) 350.
- the Z display device 400 analyzes data output from the inspection devices 100, 200, and 300, and displays wired messages and wireless messages in a time-series or call-by-call sequence.
- GPS receiver 500 is the F It receives GPS information such as remes data and measures the position of its own device, and outputs time information indicating the time at which the GPS information was received and position information as a measurement result to the inspection devices 100, 200, and 300.
- FIG. 2 is a block diagram showing an internal configuration of the inspection apparatus 100 according to the present embodiment.
- Inspection apparatus 100 includes reception antenna 101, reception RF sections 102-1, 102-2, AZD conversion sections 103-1, 103-2, storage section 104, and demodulation sections 105-1, 105. —2, decoding sections 106 1, 106 — 2, ⁇ ⁇ , CPU 108, I / F ⁇ , I / F ⁇ , and power.
- the CPU 108 has a parameter selection unit 111.
- the reception antenna 101 receives a signal transmitted from the communication terminal device 50 or the base station device 150.
- the IZF unit 109 receives the position information and the time information output from the GPS receiving device 500.
- the IZF unit 110 receives terminal information indicating a communication terminal device to be inspected specified by the user, and information indicating wireless parameters output from the analysis Z display device 400 (hereinafter referred to as “wireless parameter information”). You.
- the wireless parameter information is obtained by listing each wireless parameter in association with time information, and details thereof will be described later.
- Reception RF section 102-1 performs frequency conversion on the radio signal received by reception antenna 101 at the carrier frequency of the uplink to be inspected specified by CPU 108, and converts the baseband signal into an AZD signal. Output to section 103-1.
- Reception RF section 102-2 performs frequency conversion on the radio signal received by reception antenna 101 at the carrier frequency of the downlink to be inspected specified by CPU 108 and converts the baseband signal into an AZD conversion section 103 — Output to 2.
- the AZD conversion units 103-1 and 103-2 perform AZD (analog Z-digital) conversion processing on the baseband signals output from the corresponding reception RF units 102-1 and 102-2. Then, the digitalized signal is output to the storage unit 104.
- the storage unit 104 stores digital data (hereinafter, referred to as “IZF data”) output from the AZD conversion units 103-1 and 103-2 in association with time information input via the IZF unit 109. Will be saved.
- Demodulation section 105-1 performs a demodulation including despreading processing on the IZF data stored in storage section 104 using the uplink radio parameters output from parameter selection section 111. After that, the demodulated symbol data is output to the decoding section 106-1.
- the demodulation unit 105-2 performs demodulation processing including despreading processing on the IZF data stored in the storage unit 104 using the downlink radio parameters to which the parameter selection unit 111 has also output, and demodulates.
- the decoded symbol data is output to decoding section 106-2.
- the wireless parameters used for demodulation include channel type, scramble code, channelization code, spreading factor, and the like.
- Physical channels for demodulation include a physical random access channel (PRACH) and a dedicated physical channel (DPCH) as uplinks, and a primary common control physical channel (P—CCPCH) and a secondary channel as downlinks.
- PRACH physical random access channel
- DPCH dedicated physical channel
- P—CCPCH primary common control physical channel
- S-CCPCH common control physical channel
- DPCH dedicated physical channel
- AICH access indicator channel
- PICH paging indicator channel
- Decoding section 106-1 performs decoding processing such as error correction decoding on the symbol data output from demodulation section 105-1 using radio parameters of the uplink, and obtains a transformer obtained by decoding.
- the port channel data is output to the storage unit 107.
- Decoding section 106-2 performs decoding processing of error correction decoding on the symbol data output from demodulating section 105-2 using downlink radio parameters, and transport channel data obtained by decoding. Is output to the storage unit 107.
- the storage unit 107 stores the transport channel data (hereinafter, referred to as “Uu data”) output from the decoding units 106-1 and 106-2.
- Uu data transport channel data
- transport channels for decoding include a random access channel (RACH) and a dedicated channel (DCH) as an uplink, and a broadcast channel (BCH), a paging channel (PCH), and a forward access as a downlink.
- RACH random access channel
- DCH dedicated channel
- FACH paging channel
- DCH forward access as a downlink.
- FACH dedicated channel
- the logical channels for decoding include a common control channel (CCCH) and a dedicated control channel (DCCH) as uplink, a broadcast control channel (BCCH), a paging control channel (PCCH), and a common control channel (CCCH).
- DCCH dedicated control channel
- CPU 108 instructs reception RF sections 102-1 and 102-2 of a required carrier frequency. Also, the CPUIO8 outputs the IZF data of the communication terminal device corresponding to the terminal information from the storage unit 104 to the demodulation units 105-1 and 105-2. Also, the CPU 108 The Uu data of the communication terminal device corresponding to the report is output from the storage unit 107 to the analysis Z display device 400 via the IZF unit 110 together with the time information.
- the parameter selection unit 111 in the CPU 108 Compare with time information.
- the parameter selection unit 111 selects a wireless parameter whose two pieces of time information match, and transmits the selected wireless parameter to the demodulation units 105-1, 105-2, and the decoding units 106-1, 106-2 at the timing indicated by the time information. Output.
- appropriate wireless parameters can be output to demodulation sections 105-1, 105-2 and decoding sections 106-1, 106-2 in accordance with the demodulation Z-decoding timing. Uu data of the communication terminal device to be inspected can be obtained.
- the inspection device 200 mainly includes an IZF unit 201, an IZF unit 202, a storage unit 203, a CPU 204, and an IZF unit 205.
- Transport channel data (hereinafter, referred to as "Iub data") exchanged over ATM between base station apparatus 150 and RNC 250 is input to IZF section 201.
- the position information and the time information output from the GPS receiving device 500 are input to the IZF unit 202.
- the storage unit 203 stores the Iub data output from the IZF unit 201 in association with the time information input via the IZF unit 202.
- CPU 204 outputs Iub data and time information stored in storage unit 203 to analysis Z display device 400 via IZF unit 205 based on an instruction from the user.
- Iu data transport channel data exchanged over ATM between the RNC 250 and the MSC 350 (hereinafter, “Iu data”) ) Is input, and a detailed description thereof will be omitted.
- the analysis Z display device 400 mainly includes an input instruction unit 401, an iZF unit 402, an iZF unit 403, a CPU 404, and a display unit 405.
- the CPU 404 includes an analysis unit 411, a wireless parameter extraction unit 412, and a display control unit 413.
- the input instruction unit 401 receives a signal indicating an instruction from the user (hereinafter, referred to as an "instruction signal").
- Uu data output from the inspection device 100 is input to the IZF unit 402.
- the IZF unit 403 receives the Iub data output from the inspection device 200 and the Iu data output from the inspection device 300.
- the analysis unit 411 inside the CPU 404 performs each analysis of MAC, RLC, and RRC on the Iub data and Iu data, converts the knowledge sequence into message data that can be easily conveyed by the user, and provides an input instruction unit 401
- the message data relating to the communication terminal device to be inspected specified by the instruction signal output from the communication terminal device is output to the wireless parameter extraction unit 412 and the display control unit 413.
- analysis section 411 performs MAC, RLC, and RRC analysis on the Uu data, converts the data into message data, and outputs the message data to display control section 413.
- the specific processing content of the analysis unit 411 will be described later.
- the wireless parameter extraction unit 412 inside the CPU 404 extracts and extracts radio parameters necessary for demodulating and decoding the Iub data or the message power Uu data of the Iu data output from the analysis unit 411.
- the wireless parameter information is created by associating the wireless parameter with the time information, and the wireless parameter information is output to the inspection apparatus 100 via the IZF unit 402.
- the specific processing contents of the wireless parameter extraction unit 412 will be described later.
- display control unit 413 in CPU 404 arranges the message data into a time series or a sequence for each call, and causes display unit 405 to display the message data.
- the analysis unit 411 first performs MAC, RLC, and RRC analysis on Iub data and Iu data, and converts the binary string into message data that is easy for the user to concentrate on. At this time, As shown in Fig. 5, data for calls A, B, and C- are mixed. Therefore, the analyzing unit 411 performs a process of organizing the message data for each call as shown in FIG. Then, the analysis unit 411 sends the message data group 601 to be inspected, which is indicated by the instruction signal output from the input instruction unit 401 (for example, call A), to the wireless parameter extraction unit 412 and the display control unit. Output to section 413. This message data group 601 is associated with time information. Note that the analysis unit 411 performs the same processing on the Uu data, and outputs a message data group to the display control unit 413.
- FIG. 7 is a diagram showing the message data group 601 in detail.
- the radio parameter extraction unit 412 selects message data (A (2) and A (4) in FIG. 7) that also includes the radio parameters as shown in FIG. 7 and demodulates Uu data from the selected message data. Then, the wireless parameters necessary for decoding are extracted, and the extracted wireless parameters are associated with the time information to create wireless parameter information that is restored.
- FIG. 8 is a diagram illustrating an example of the wireless parameter information. Then, the wireless parameter extracting unit 412 outputs wireless meter information as shown in FIG. 8 to the inspection device 100 via the IZF unit 402.
- the inspection apparatus 100 receives uplink and downlink radio signals transmitted and received in a radio section (Uu), and performs radio processing and AZD conversion processing on the received signals. Save the IZF data.
- the data exchanged on the ATMs in the inspection devices 200 and 300 and the wired section (Iub, Iu) are input, and the analysis Z display device 400 stores the Iub data and Iu data.
- the analysis Z display device 400 extracts wireless parameters necessary for demodulating and decoding Uu data based on Iub data and Iu data. Extract.
- IZF data relating to the communication terminal device to be inspected is demodulated and Z-decoded by inspection device 100 using wireless parameters, and the obtained Uu data is stored.
- DRDCH is used as a physical channel
- DCH is used as a transport channel.
- CCCH as logical channels.
- the inspection apparatus 100 first sets the scramble code, channelization code, and spreading factor of the specific base station apparatus and demodulates the DPDCH data. Performs processing and decodes 270-bit data.
- the checking device 100 checks the CRC using the 16-bit CRC code added to the DCH data, and if no error is detected, extracts and stores the 246-bit DCH transport block.
- the analysis Z display device 400 performs the Iub data, Iu data, and wireless data demodulation processing (ST903) acquired in the data acquisition processing (ST901) on the analysis Z display device 400.
- the acquired Uu data is converted into message data, and the message data is displayed in a time-series or call-specific sequence.
- FIG. 10 is a diagram showing a sequence for establishing a DCH (individual channel) specified by 3GPP (3rd Generation Partnership Project).
- Fig. 11 is an example of a sequence diagram when a message only for the conventional wired section (Iub) is displayed.
- the "8.RRC Connection Setup" to be received by the communication terminal is displayed even if it is analyzed. It indicates when it is not possible to do so. In this case, the user cannot determine whether the cause of the problem is due to the transmission of the communication terminal device, the power of the reception of the base station device, or the poor propagation environment. .
- the wireless section (Uu) is inspected together with the wired section (Iub), and the message is transmitted.
- the base station apparatus transmits "8.RRC Connection Setup”
- the user responds to the response "9.RRC Connection Setup Complete” because the base station apparatus has not received "9.RRC Connection Setup Complete”.
- the processing load may be increased as a cause of the processing delay of the base station device, if the user similarly demodulates the exchange of signals with other communication terminal devices and displays the messages in chronological order, The bottleneck can be estimated comprehensively.
- the message of the conventional wired section (Iub) alone is displayed, the user sees no response from the communication terminal device as if there is no V, and cannot identify the failure! / ,.
- Displaying a message in a wireless section as well as in a wired section is equivalent to using a single physical channel in a shared manner by a plurality of communication terminal devices by time division, such as a packet such as HSDPA (High-Speed Downlink Packet Access). This is particularly effective in transmission systems.
- HSDPA High-Speed Downlink Packet Access
- a base station device stores packet data transmitted from an RNC, determines a communication terminal device and a transmission parameter of a transmission destination by scheduling, transmits packet data, and transmits H-ARQ (Hybrid -The packet data is retransmitted as appropriate under Automatic Repeat Request) control. Then, when all the packet data has been transmitted, the base station apparatus sends a transmission completion response to the RNC.
- H-ARQ Hybrid -The packet data is retransmitted as appropriate under Automatic Repeat Request
- the user receives a packet completion response from the RNC to the base station apparatus and a transmission completion response from the base station apparatus to the RNC. Since only the detection can be performed, the user cannot evaluate whether or not the behavior of the base station device is correct. For example, if it takes more time to complete the transmission of packet data than to complete the transmission, the cause may be that the communication quality in the wireless section was poor and the packet size was reduced, or that the retransmission occurred frequently or that the base station The user cannot specify whether the algorithm of the device is incorrect.
- wireless parameters can be reliably acquired in a short time.
- the user can easily specify the failure.
- the power described in the case where two wired sections are inspected and both Iub data and Iu data are acquired is not limited to this.
- the present invention is not limited to this, and either Iub data or Iu data is used.
- the present invention can be applied to a case where one is acquired.
- the key code for decrypting the code is determined when the communication terminal device is authenticated to the network, and is notified to the RNC via the ATM. Therefore, it is possible to inspect the wired section (Iu) and obtain a key code using the Iu data. Then, by using the key code in the MAC analysis of analysis section 411, the encrypted wireless section data can be decrypted.
- the key code can be obtained from the wired data obtained in the inspection of the wired section, the encrypted data of the wireless section is inspected. It comes out.
- the present invention is suitable for use in an inspection device and a monitoring system in a wireless section.
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- Electromagnetism (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05736484A EP1739859A1 (en) | 2004-05-12 | 2005-04-28 | Inspection device, analysis/display device, and inspection system |
US11/579,957 US7729692B2 (en) | 2004-05-12 | 2005-04-28 | Inspection apparatus, analysis display apparatus, inspection system and inspection method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-142094 | 2004-05-12 | ||
JP2004142094A JP4567371B2 (ja) | 2004-05-12 | 2004-05-12 | 検査装置、解析/表示装置、検査システム |
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WO2005109685A1 true WO2005109685A1 (ja) | 2005-11-17 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/008197 WO2005109685A1 (ja) | 2004-05-12 | 2005-04-28 | 検査装置、解析/表示装置、検査システム |
Country Status (5)
Country | Link |
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US (1) | US7729692B2 (ja) |
EP (1) | EP1739859A1 (ja) |
JP (1) | JP4567371B2 (ja) |
CN (1) | CN1954520A (ja) |
WO (1) | WO2005109685A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008259184A (ja) * | 2007-03-30 | 2008-10-23 | Tektronix Inc | 暗号化キー転送方法、暗号化キー供給システム及びデータ・パケット解読方法 |
JP2008259204A (ja) * | 2007-03-30 | 2008-10-23 | Tektronix Inc | アクセス・チャネル相関方法、ポート識別方法及びaal2チャネル識別方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US20060068712A1 (en) * | 2004-09-24 | 2006-03-30 | Kroboth Robert H | Method of remotely monitoring and troubleshooting multiple radio network controllers |
US20060245365A1 (en) * | 2005-04-28 | 2006-11-02 | Monk John M | Apparatus and method for correlation and display of signaling and network events |
US7620509B2 (en) * | 2005-11-03 | 2009-11-17 | Tektronix, Inc. | Detection of time-frequency codes using a spectrogram |
JP2009225329A (ja) * | 2008-03-18 | 2009-10-01 | Toshiba Corp | 移動通信システム |
DE102011077390B4 (de) * | 2011-06-10 | 2022-01-27 | Rohde & Schwarz GmbH & Co. Kommanditgesellschaft | Messgerät und Verfahren zur Vermessung eines Signals mit mehreren Teilsignalen |
US9638792B2 (en) * | 2014-07-09 | 2017-05-02 | Verizon Patent And Licensing Inc. | Method and apparatus for detecting obstacles in propagation path of a wireless communication signal |
JP6404767B2 (ja) * | 2015-04-20 | 2018-10-17 | 日本電信電話株式会社 | 監視制御システム及び監視制御方法 |
Citations (1)
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JP2003283481A (ja) * | 2002-03-22 | 2003-10-03 | Canon Inc | 無線システム、無線通信方法、記録媒体及びプログラム |
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US6308065B1 (en) * | 1998-12-07 | 2001-10-23 | Agilent Technologies, Inc. | Apparatus for testing cellular base stations |
US7301920B2 (en) * | 2002-10-25 | 2007-11-27 | Telecom Network Optimization, Inc. | System and method for identifying co-channel interference in a radio network |
JP2004072665A (ja) | 2002-08-09 | 2004-03-04 | Cybernetics Technology Co Ltd | Cdmaエアーモニター |
-
2004
- 2004-05-12 JP JP2004142094A patent/JP4567371B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-28 WO PCT/JP2005/008197 patent/WO2005109685A1/ja not_active Application Discontinuation
- 2005-04-28 EP EP05736484A patent/EP1739859A1/en not_active Withdrawn
- 2005-04-28 US US11/579,957 patent/US7729692B2/en not_active Expired - Fee Related
- 2005-04-28 CN CNA2005800153059A patent/CN1954520A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003283481A (ja) * | 2002-03-22 | 2003-10-03 | Canon Inc | 無線システム、無線通信方法、記録媒体及びプログラム |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008259184A (ja) * | 2007-03-30 | 2008-10-23 | Tektronix Inc | 暗号化キー転送方法、暗号化キー供給システム及びデータ・パケット解読方法 |
JP2008259204A (ja) * | 2007-03-30 | 2008-10-23 | Tektronix Inc | アクセス・チャネル相関方法、ポート識別方法及びaal2チャネル識別方法 |
US8254573B2 (en) | 2007-03-30 | 2012-08-28 | Tektronix, Inc. | System and method for ciphering key forwarding and RRC packet deciphering in a UMTS monitoring system |
Also Published As
Publication number | Publication date |
---|---|
US20080191708A1 (en) | 2008-08-14 |
EP1739859A1 (en) | 2007-01-03 |
US7729692B2 (en) | 2010-06-01 |
JP4567371B2 (ja) | 2010-10-20 |
CN1954520A (zh) | 2007-04-25 |
JP2005328132A (ja) | 2005-11-24 |
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