WO2001033248A1 - Systeme de communication mobile - Google Patents

Systeme de communication mobile Download PDF

Info

Publication number
WO2001033248A1
WO2001033248A1 PCT/JP2000/007678 JP0007678W WO0133248A1 WO 2001033248 A1 WO2001033248 A1 WO 2001033248A1 JP 0007678 W JP0007678 W JP 0007678W WO 0133248 A1 WO0133248 A1 WO 0133248A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
mobile radio
radio terminal
mobile
signal
Prior art date
Application number
PCT/JP2000/007678
Other languages
English (en)
Japanese (ja)
Inventor
Kiyoshi Nomura
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to AU10524/01A priority Critical patent/AU1052401A/en
Publication of WO2001033248A1 publication Critical patent/WO2001033248A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/001—Transmission of position information to remote stations
    • G01S2205/008—Transmission of position information to remote stations using a mobile telephone network

Definitions

  • the present invention relates to a mobile communication system that handles mobile wireless terminals such as mobile phones and PHS terminals, and more particularly to a mobile communication system that has a function of detecting the position of a mobile wireless terminal.
  • the method disclosed in the above-mentioned publication is used in a mobile communication system in which a communication of a DCMA method is performed between a mobile radio terminal and a plurality of base stations.
  • the mobile radio terminal determines the time (propagation delay time) until the transmission signal of each base station reaches the mobile radio terminal.
  • the position of the own station is calculated using three elements including a difference, a difference in transmission timing between transmission signals of each base station, and information on the position of each base station.
  • the difference in time required for the transmission signal of each base station to reach the mobile radio terminal is referred to as “propagation delay time difference”.
  • the propagation delay time difference among the above three factors is calculated by the mobile radio terminal.
  • Information on the difference in transmission timing and the position of each base station among the above three elements is transmitted from the base station to the mobile radio terminal via a predetermined radio channel. Will be notified.
  • the mobile radio terminal communicates via an access channel when the mobile radio terminal is in a standby state, and a traffic channel used for transmitting voice information when the mobile radio terminal is in a call state.
  • the information on the calculated position is transmitted to the base station or the management station dedicated to position detection via.
  • a part of the communication resources used for communication from the base station to the mobile radio terminal is used for communication of the above-described transmission timing difference and information on the position of each base station. Need to be assigned to
  • the mobile radio terminal calculates the position using the above three elements, so that the operation rate of CPU increases and an extra memory is required. For this reason, there is a problem that the power consumption and the device size of the mobile radio terminal increase.
  • the present inventors notify the propagation delay time difference calculated by the mobile radio terminal to the base station, and the base station notifies the propagation delay time difference notified from the mobile radio terminal to the position calculation station. Notifying, and the position calculating station detects the position of the mobile radio terminal using the difference in the transmission timing, the information on the position of each base station, and the propagation delay time notified from the base station.
  • System hereinafter referred to as “second mobile communication system”. This invention is disclosed in Japanese Patent Application Laid-Open No. H11-12526332.
  • the mobile radio terminal receives transmission signals (spread spectrum signals) from a plurality of base stations, and In order to detect the position of the station, a difference in time required for the transmission signal of the base station to reach the mobile radio terminal, that is, a propagation delay time difference, is calculated using the received transmission signals.
  • a propagation delay time difference the mobile radio terminal needs to operate a circuit (including a digital signal processor) for calculating the propagation delay time difference. Therefore, if the mobile wireless terminal frequently calculates the propagation delay time difference, the operating rate of the circuit increases and an extra memory is required, so that more power is consumed.
  • the operating time (ie, standby time and talk time) of a mobile wireless terminal using a small battery as a power source is significantly reduced.
  • the position of the mobile radio terminal may be detected even in a standby state.
  • information on the position of the mobile radio terminal is transmitted from the mobile radio terminal to the base station via an access channel.
  • Such an increase in traffic may cause a shortage of access channel capacity, and may increase a processing load on a base station receiving the information on the above-mentioned location or a management station dedicated to location detection.
  • the second mobile communication system not the information on the position of the mobile radio terminal but the propagation delay time difference is transmitted from the mobile radio terminal to the base station via a predetermined radio channel. Therefore, there is a possibility that a similar increase in traffic occurs in the predetermined wireless channel.
  • the mobile radio terminal transmits more information on the position (propagation delay time difference) to the base station more frequently. Power will be consumed. This allows The operating time of a mobile wireless terminal that mainly uses a small battery as a power source is significantly shortened, which makes it difficult to reduce the size of the mobile wireless terminal, make the standby time longer, and increase the talk time. Disclosure of the invention
  • An object of the present invention is to provide a mobile communication system that reduces the power consumption and size of a mobile wireless terminal and that reduces traffic on a wireless channel.
  • the purpose is that only the mobile radio terminal instructed to calculate the position information (that is, the mobile radio terminal that has been requested to detect the position information) has the propagation delay time difference (arrival time) required to calculate the position information of this mobile radio terminal. Is calculated and transmitted to the base station. More specifically, according to the present invention, among mobile radio terminals instructed to calculate position information, only a moving mobile radio terminal calculates a propagation delay time difference and transmits it to a base station. Achieved. BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is a block diagram showing a configuration of a mobile communication system according to a first embodiment of the present invention
  • FIG. 2 is a block diagram showing a configuration of a base station in the mobile communication system according to the first embodiment of the present invention
  • FIG. 3 is a block diagram showing a configuration of a mobile radio terminal in the mobile communication system according to the first embodiment of the present invention
  • FIG. 4 is a block diagram showing a configuration of a position calculating station in the mobile communication system according to the first embodiment of the present invention
  • FIG. 5 is a schematic diagram showing an example of a frame format of a paging channel transmitted by a base station in the mobile communication system according to the first embodiment of the present invention
  • FIG. 6 is a block diagram showing a configuration of a mobile radio terminal in a mobile communication system according to a second embodiment of the present invention
  • FIG. 1 is a block diagram showing a configuration of the mobile communication system according to the first embodiment of the present invention.
  • the mobile communication system includes a mobile radio terminal 5, base stations 1 to 4 around the mobile radio terminal 5, and base stations 1 to 4, respectively. And a position calculation station 6 connected via wired lines 21 to 24.
  • mobile radio terminal 5 performs normal radio communication with base station 1 (that is, the base station to be communicated with is base station 1).
  • the base stations 1 to 4 transmit timing signals 11 to 14, respectively. These timing signals are signals used by the mobile radio terminal 5 for the purpose of calculating a time difference (that is, arrival time difference) until the transmission signal of each base station reaches the mobile radio terminal 5. .
  • a time difference that is, arrival time difference
  • the perch channel signal transmitted by each base station is spread by a base station-specific perch channel spreading code.
  • any signal other than the perch channel signal can be used as long as the condition that the mobile radio terminal 5 can calculate the arrival time difference is satisfied. For example, indicate the time actually transmitted by the base station. If the signal containing the timing information is transmitted by the base station as a timing signal, the mobile radio terminal 5 determines the time when the timing signal was received and the information indicating the time included in the timing signal. By using this, the time of arrival for this base station can be calculated. Thereby, the mobile radio terminal 5 can calculate the arrival time difference using the timing signal transmitted by each base station.
  • the base stations 1 to 4 transmit a position information signal (ie, a signal including information for instructing calculation of position information) to a mobile wireless terminal that is performing normal wireless communication with the base station.
  • position information signals are transmitted to the mobile radio terminal 5 as position information (specifically, information necessary for calculating the position of the mobile radio terminal 5, that is, the arrival time difference at the mobile radio terminal 5).
  • This signal is used for the purpose of instructing the calculation of.
  • a signal transmitted via a paging channel hereinafter, referred to as a “paging channel signal”
  • the paging channel signal transmitted by each base station is spread by a base station-specific paging channel spreading code.
  • the mobile radio terminal 5 performs normal radio communication with the base station 1 (that is, the base station 1 is a communication target base station for the mobile radio terminal 5).
  • the figure shows that only the base station 1 transmits the paging channel signal 15 to the mobile radio terminal 5.
  • base stations 2 to 4 also transmit paging channel signals to mobile radio terminals that are performing radio communication with the base stations.
  • FIG. 2 is a block diagram showing a configuration of a base station in the mobile communication system according to the first embodiment of the present invention.
  • the base stations 1 to 4 include a timing signal transmitting unit 31 for transmitting a timing signal (perch channel signal) to the mobile radio terminal 5 via the antenna 30, The mobile radio terminal 5 uses the signal transmitted from the antenna 5 and received via the antenna 30.
  • a signal transfer unit 35 that extracts information about the calculated arrival time difference and transfers it to the transmission / reception unit 34, and a paging channel transmission unit that transmits a paging channel signal (position information signal) to the mobile radio terminal 5.
  • a transmission / reception unit 3 for transmitting the information transferred by the signal transmission unit 3 5 and the timing of the timing signal transmitted by the timing signal transmission unit 31 to the position calculation station 6 via the wired line 37.
  • FIG. 3 is a block diagram showing a configuration of a mobile radio terminal in the mobile communication system according to the first embodiment of the present invention.
  • the mobile radio terminal 5 includes a paging channel receiver 44 for extracting a paging channel signal (position information signal) from a signal (received signal) received by the antenna 40, and a paging channel.
  • the contents of the base channel signal extracted by the channel receiving unit 44 are analyzed, and each unit (the timing signal receiving unit 41, the calculating unit 42, and the comparing unit 46) of the mobile radio terminal 5 is analyzed according to the analysis result.
  • An analysis section 47 for controlling; a timing signal reception section 41 for extracting timing signals 11 to 14 constantly transmitted by the base stations 1 to 4 from signals (reception signals) received by the antenna 40; A calculation unit 42 for calculating the arrival time difference between the timing signals 11 to 14 extracted by the timing signal reception unit 41; and a storage unit 45 for storing the arrival time difference calculated by the calculation unit 42. , Calculation The difference between the current arrival time difference (current arrival time difference) calculated by the unit 42 and the arrival time difference (previous arrival time difference) stored by the storage unit 45 is calculated, and the calculated difference is compared with a predetermined value. And a transmitting section 43 for transmitting the arrival time difference calculated by the calculating section 42 to the base station 1 in accordance with the result of the comparison in the comparing section 46.
  • FIG. 4 is a block diagram showing a configuration of a position calculating station in the mobile communication system according to the first embodiment of the present invention.
  • the position calculation station 6 includes a wired line 37 connected to each of the base stations 1 to 4 and a signal obtained through the wired line 37 (for example, an information signal such as voice and an arrival time difference to be described later).
  • Receiving information 51) and information on the positions of base stations 1 to 4 hereinafter referred to as “position information”.
  • Location information ".
  • FIG. 5 is a schematic diagram illustrating an example of a frame format of a base channel transmitted by the base station in the mobile communication system according to the first embodiment of the present invention.
  • the paging channel is a channel used for a mobile radio terminal in a standby state to intermittently receive information from a base station (intermittent reception). The details of this paging channel are as follows.
  • Each mobile radio terminal that intermittently receives from the base station 1 is assigned one of a plurality of groups prepared in advance as a group to which the mobile terminal belongs. That is, the mobile radio terminals that receive intermittently from the base station 1 are grouped.
  • the base station 1 divides each unit frame into a predetermined number of time slots, and allocates a group to which information is transmitted to each time slot. Further, base station 1 transmits information on the predetermined group using a time slot to which the predetermined group is assigned.
  • Each mobile radio terminal intermittently receiving from the base station 1 receives only the time slot corresponding to the group to which the mobile terminal belongs.
  • each unit frame (for example, first to third frames) is divided into a predetermined number (for example, 5) of time slots.
  • a group to which information is to be transmitted (for example, a first group and a second group) is assigned.
  • the first group is assigned to time slots 6 1—1, 6 2—2 and 6 3—3, and the second group is assigned to time slots 6 2—1 and 6 3—2.
  • Information on each group is provided by the control unit and The data section 4 is included.
  • the control unit in the information on the first group is transmitted in time slot 61-1 among the time slots to which the first group is assigned, and the data unit 1 in the information on the first group is assigned to the first group.
  • the data part 2 of the information about the first group is transmitted in the time slot 63-2 of the time slots to which the first group is assigned. .
  • Details of the information for each group are as follows. That is, the information on each group includes a control unit and a plurality of data units.
  • the control section includes data indicating whether or not data sections 1 to 4 contain valid data (0: no valid data, 01: incoming call instruction, 10: position information calculation instruction, 1 1: Position information calculation stop instruction) is set.
  • the data sections 1 to 4 contain information indicating the number of the terminal to be controlled by the control section.
  • the mobile radio terminal that has received the control unit indicating “0 0 (no valid data)” does not receive the data units 1 to 4 for the group to which the mobile terminal belongs.
  • the mobile radio terminal stops the reception operation until a time slot in a predetermined frame transmitted by the next control unit for the group to which the mobile radio terminal belongs.
  • the mobile radio terminal that has received the control unit indicating “01 (incoming call instruction)” first receives the data units 1 to 4 for the group to which the terminal belongs, transmitted from the next frame onward. Further, when the received data portions 1 to 4 include information indicating the own terminal, the mobile radio terminal starts a call reception operation and then starts a telephone call (normal communication).
  • the mobile radio terminal that has received the control unit indicating “10 (location information calculation instruction)” first receives the control unit indicating “01 (incoming instruction)” in the same manner as when the control unit indicates the next frame. Receives the transmitted data parts 1 to 4 for the group to which the terminal belongs. Further, when the received data portions 1 to 4 include information indicating the own terminal, the mobile wireless terminal calculates the arrival time difference. The details of the calculation of the arrival time difference will be described later.
  • This “10 (position information calculation instruction)” May be transmitted to a mobile wireless terminal (for example, a mobile wireless terminal owned by a wandering elderly person or the like) for which location information is required at regular time intervals. Alternatively, it may be transmitted a predetermined number of times.
  • the mobile radio terminal that has received the control unit indicating "1 1 (position information calculation stop instruction)" first transmits the control unit after the next frame in the same manner as when the control unit indicates "01 (incoming instruction)". It receives the data for the group to which the terminal belongs. Furthermore, when the received data portions 1 to 4 include information indicating the own terminal, the mobile radio terminal stops calculating the arrival time difference.
  • the above is the details of the paging channel.
  • antenna 40 mainly evening signal 11 to 14 transmitted by each of base stations 1 to 4 and paging channel signal transmitted by base station 1 Are received at the same time.
  • the signal (received signal) received by antenna 40 is sent to paging channel receiving section 44 and timing signal receiving section 41.
  • the paging channel receiving section 44 performs despreading processing on the received signal from the antenna 40 using the paging channel spreading code assigned to the base station 1, thereby converting the paging channel signal. Is extracted.
  • the extracted paging channel signal is sent to analysis section 47.
  • paging channel signal receiving section 44 The operation of paging channel signal receiving section 44 is performed when base station 1 transmits a control section (see FIG. 5) for the group to which the own terminal belongs.
  • the operation of paging channel signal receiving section 44 as described above is performed when base station 1 is transmitting data sections 1 to 4 (see FIG. 5) for the group to which the own terminal belongs.
  • the operation of the paging channel signal receiving unit 44 is performed under the control of the analyzing unit 47 that has analyzed the contents of the control unit.
  • the analysis section 47 analyzes the contents of the paging channel signal extracted by the paging channel reception section 44 (specifically, the control section for the group to which the terminal belongs). According to the result of this analysis, first, the paging channel receiving section 44 is controlled by the analyzing section 47.
  • the control unit in the extracted paging channel signal is any of “01”, “10”, and “11”, the data units 1 to 4 for the group to which the own terminal belongs belong to the base station. Since it is transmitted by 1, the paging channel receiving section 44 is controlled by the analyzing section 47 so as to extract the paging channel at the timing when the data sections 1 to 4 are received. As a result, the contents of the paging channel signal extracted by the paging channel receiving unit 44 (specifically, the data units 1 to 4 of the group to which the own terminal belongs) are input to the analyzing unit 47. .
  • the analyzing section 47 controls the timing signal receiving section 41, the calculating section 42, and the comparing section 46 according to the results of the analysis of the analyzing section and the data sections 1 to 4. That is, the control unit in the extracted paging channel signal indicates “10 (location information calculation instruction)”, and one of the demultiplexing units 1 to 4 in the extracted paging channel signal indicates its own terminal.
  • the analysis unit 47 activates the timing signal reception unit 41, the calculation unit 42, and the comparison unit 46 only when the information indicating the following is included.
  • the base station 1 sends a control unit that indicates “10 (location information calculation instruction)” to the mobile radio terminal that needs location information at regular time intervals or a predetermined number of times. Send. Therefore, each time the own terminal receives the position information calculation instruction from the base station 1 and each of the data sections 1 to 4 includes information indicating the own terminal, the analysis section 47 executes Is activated.
  • the above units are not activated by the analysis unit 47.
  • the control unit in the extracted paging channel signal is “11 (location information calculation stop instruction)”, and the extracted paging channel signal is If the information indicating the own terminal is included in any of the data sections 1 to 4 in the data channel signal (in this case, the control section was previously “10” and the data section 1 to 4 (It goes without saying that the above-described units have been activated because the information indicating the terminal is included.)
  • the analysis unit 47 stops the activation of the above units.
  • the control unit in the extracted paging channel signal is “01 (incoming call instruction)”, and information indicating the own terminal is included in any of the data units 1 to 4 in the extracted paging channel signal.
  • the above-described units may be activated by the analysis unit 47.
  • the control unit in the extracted paging channel signal is “10”, and information indicating the own terminal is included in any of the data units 1 to 4 in the extracted paging channel signal. It is preferable that the above-described units are started by the analysis unit 47 only when there is an error.
  • the timing signal receiving unit 41 performs despreading processing on the received signal from the antenna 40 using a spreading code for a perch channel unique to each of the base stations 1 to 4.
  • a spreading code for a perch channel unique to each of the base stations 1 to 4. evening signals 11 to 14 transmitted by base stations 1 to 4 are extracted.
  • Each of the extracted timing signals is sent to the calculation unit 42.
  • the calculating unit 42 calculates the arrival time difference between the timing signals using each timing signal extracted by the timing signal receiving unit 41. That is, the arrival time difference between the timing signals transmitted by the reference base stations in all the base stations (base stations 1 to 4) and the timing signals transmitted by each base station other than the reference base station is calculated. More specifically, when the evening signal 11 transmitted by the base station 1 is used as a reference (that is, the base station 1 is used as a reference base station), the timing signal 11 and the timing signals 12 to 14 are used. Arrival time difference between (t pl2, tpl3, tp14) are calculated. Note that any of the base stations 1 to 4 may be selected as the reference base station. The calculated arrival time difference is sent to the comparison unit 46 and the accumulation unit 45.
  • the storage unit 45 stores the arrival time difference calculated by the calculation unit 42 as a current arrival time difference (current arrival time difference).
  • the comparison unit 46 compares the arrival time difference currently calculated by the calculation unit 42 (current arrival time difference) with the arrival time difference previously calculated by the calculation unit 42 and stored in the storage unit 45 (previous arrival time difference). ) The difference between and is calculated. Further, the calculated difference is compared with a predetermined value. If the calculated difference is equal to or larger than the predetermined value, the comparing unit 46 determines that the mobile wireless terminal 5 has moved from the previous position, and transfers the currently calculated arrival time difference to the transmitting unit 43. Is done. Conversely, if the calculated difference is less than the predetermined value, the comparing unit 46 determines that the mobile wireless terminal 5 is at the previous position, and transfers the arrival time difference to the transmitting unit 43. Not done.
  • the predetermined value is set by the base station 1 and received by the mobile radio terminal 5 via a channel such as an access channel. Further, the predetermined value is set by the base station 1 so as to be a value corresponding to the required accuracy of position detection. Naturally, since there are a plurality of mobile radio terminals that perform radio communication with the base station 1, the above-mentioned predetermined value is set by the base station 1 for each mobile radio terminal.
  • the mobile radio terminal transmits only when the base station issues a position information calculation instruction and the mobile terminal is not moving (ie, the arrival time difference is equal to or greater than a predetermined value).
  • the case where information indicating the arrival time difference is transmitted to the base station has been described.
  • the present invention is not limited to this, and when the mobile radio terminal issues a position information calculation instruction from the base station irrespective of the movement of its own terminal, information indicating the arrival time difference with respect to the base station is provided. It can be applied to the transmission of In this case, the base station reliably receives the arrival time difference at the mobile radio terminal only from the mobile radio terminal that needs position detection. Therefore, the current position of the mobile radio terminal can be reliably detected.
  • the frequency of transmission of position information (arrival time difference) by the mobile radio terminal which may have low detection accuracy, is suppressed. Therefore, the power consumption of the mobile radio terminal can be reduced.
  • the setting of the predetermined value is performed not only by the base station 1 but also in the base stations 2 to 4.
  • the arrival time difference transferred from the comparing section 46 is transmitted to the base station 1 through the antenna 40 by the transmitting section 43.
  • the arrival time difference is transmitted to the base station 1 while being superimposed on the channel used in the standby state (the access channel in the present embodiment). That is, a signal including information indicating the arrival time difference is transmitted from the base station 1 to the mobile wireless terminal 5 via the access channel.
  • a signal transmitted via the access channel is referred to as an “access channel signal”.
  • the paging channel transmission unit 36 includes information about each group (for example, the control unit and the data transmission units 1 to 4) according to the frame format as shown in FIG.
  • a signal is generated, and the signal is despread by a paging channel spreading code unique to base station 1 to generate a paging channel signal.
  • the timing signal transmitting unit 31 generates a signal including information indicating the transmission timing of the timing signal transmitted by the own station (that is, information indicating the time at which the timing signal is actually transmitted) and the like.
  • a timing signal (perch channel signal) is generated by being spread by a perch channel spreading code unique to station 1.
  • the generated paging channel signal and timing signal are multiplexed at the same time and transmitted via antenna 30.
  • the signal transmitted in this manner is received by mobile radio terminal 5 described above.
  • the access channel signal transmitted by the mobile radio terminal 5 described above is received via the antenna 30 and transmitted to the signal transfer unit 35.
  • the signal transfer section 35 information on the arrival time difference calculated by the mobile radio terminal 5 is extracted from the signal (received signal) received by the antenna 30.
  • the information on the arrival time difference calculated by the mobile radio terminal 5 is extracted from the received signal only when all of the following conditions are satisfied. That is, first, the first condition is that a position information calculation instruction is issued from the base station 1 to the mobile radio terminal 5 via the paging channel, and that the base station 1 That is, the position information calculation stop instruction is not issued through the paging channel.
  • the second condition is that the mobile radio terminal 5 is moving (that is, it is recognized that the difference between the previous arrival time difference and the current arrival time difference is equal to or more than a predetermined value in the comparing unit 46 in FIG. 3). That is.
  • the information on the extracted arrival time difference is transmitted to the position calculating station 6 through the wired line 37 together with the information on the transmission timing of the timing signal transmitted by the own station by the transmitting section 34.
  • the base stations 2 to 4 have the same configuration as the base station 1, and are connected between the mobile station and a mobile radio terminal that performs radio communication. Performs the same transmission processing and reception processing as described above.
  • Information on the transmission timing of the timing signals of the base stations 1 to 4 is sent to the receiving unit 51 via the wired line 37. Further, to the receiving section 51, information on the calculated arrival time difference is transmitted from the base station 1 to the mobile wireless terminal 5 via the wired line 37. These pieces of information are sent from the receiving unit 51 to the position information calculating unit 53.
  • the storage unit 52 stores the position information of the base stations 1 to 4. Specifically, the storage unit 52 stores information in which the positions of the base stations 1 to 4 are represented on a three-dimensional axis. Have been. In the present embodiment, the position information of base stations 1 to 4 is respectively (X1, ⁇ 1, ⁇ 1), ( ⁇ 2, ⁇ 2, ⁇ 2), ( ⁇ 3, ⁇ 3, ⁇ 3), ( ⁇ 4, ⁇ 4, ⁇ 4). The position information of the base stations 1 to 4 stored in the storage unit 52 is sent to the position information calculation unit 53.
  • the position information calculation unit 53 uses the position information of the base stations 1 to 4, the transmission timings of the timing signals transmitted by the base stations 1 to 4, and the arrival time difference calculated by the mobile radio terminal 5 to perform a mobile operation.
  • the position of the wireless terminal 5 is calculated.
  • the calculation of the mobile wireless terminal can be realized, for example, by the method disclosed in Japanese Patent Laid-Open No. 11-252632 by the present inventor. The outline of this method is as follows.
  • the transmission timing between the timing signal of the reference base station and the timing signals of the base stations other than the reference base station is determined.
  • the difference is calculated.
  • the reference base station may be any one of all base stations.
  • since base station 1 is the reference base station the difference in transmission timing between the timing signal of base station 1 and the timing signals of base stations 2 to 4 (that is, tdl 2, tdl 3 , Td 14) are calculated.
  • the position information of the base stations 1 to 4 the transmission timing difference between the timing signal of the base station 1 and the timing signal of the base stations 2 to 4, and the arrival time difference at the mobile radio terminal 5 are used.
  • the position (X, Y, Z) of the mobile radio terminal 5 on the three-dimensional axis is calculated.
  • the specific method of calculating the position is as disclosed in the above publication.
  • the method of calculating the position of the mobile radio terminal disclosed in the above publication is included.
  • the base station transmits a signal (in other words, a signal instructing calculation of position information (arrival time difference) via a paging channel only to mobile radio terminals that need to be located. 10 (location information calculation instruction)), and if the location information of this mobile wireless terminal is no longer needed, A signal (ie, "11 (location information calculation stop instruction)" for instructing the mobile radio terminal to stop calculating the location information (arrival time difference) can be transmitted via the paging channel.
  • the arrival time difference can be calculated by only the mobile radio terminals that need position detection among all the mobile radio terminals in the standby state, and can reach mobile radio terminals that do not need position detection. Since the time difference is not calculated, the power consumption of the mobile radio terminal can be kept low.
  • the mobile radio terminal receives the timing signal for position detection (specifically, receives the timing signal transmitted by each base station.
  • the signal is extracted from the signal), the arrival time difference is calculated, and the calculated arrival time is not always transmitted to the base station, but only when a signal instructing to calculate the position information is received from the base station. Do.
  • the power consumption of the mobile radio terminal can be kept low, and the traffic on the access channel can be reduced.
  • the processing load on the base station and the position calculation station that receives the position information (arrival time difference) from the mobile radio terminal is reduced. You can also.
  • the mobile radio terminal receives the timing signal for position detection, calculates the arrival time difference, and transmits the calculated arrival time to the base station.
  • a signal for instructing calculation of position information is received from the base station and only when the own terminal moves, so that the power consumption of the mobile radio terminal can be further reduced.
  • traffic on the access channel can be further reduced.
  • the processing load on the base station and the position calculation station that receive the position information (arrival time difference) from the mobile radio terminal can be further reduced.
  • the mobile communication system since it is possible to suppress the power consumption of the mobile radio terminal, it is possible to use the mobile radio terminal.
  • a small battery with a small capacity can be selected as the battery to be used (including a rechargeable battery). As a result, the size of the mobile radio terminal can be reduced.
  • a paging channel is used as a channel for transmitting a signal instructing the mobile radio terminal to calculate position information (arrival time difference) in order to take advantage of the following. Was explained.
  • the channel used for intermittent reception by a mobile radio terminal in a standby state shall be a paging channel.
  • the paging channel includes the concept of grouping, and the mobile radio terminal can use the paging channel to perform intermittent reception, thereby reducing the power consumption of the mobile radio terminal.
  • this field can include a signal instructing calculation of position information.
  • the present invention is also applicable to a case where a channel other than a paging channel is used as a channel for transmitting a signal instructing calculation of position information.
  • any channel that satisfies the following conditions can be used as a channel for transmitting a signal for instructing calculation of position information.
  • All mobile radio terminals that perform intermittent reception with the base station must be able to receive a signal instructing the calculation of location information in common (a common channel).
  • the channel must be able to transmit signals to start and stop calculating position information.
  • the channel must be capable of transmitting a signal indicating the mobile radio terminal from which position information calculation is started and stopped.
  • the paging channel is a channel that satisfies the above conditions (1) to (3) and can instruct a mobile radio terminal that performs intermittent reception to perform an incoming call operation. Therefore, when the paging channel is adopted, the mobile radio terminal only performs the intermittent reception via the paging channel and waits. It is possible to shift from the receiving state to the incoming call operation, and to start or stop the calculation of the position information. By this means, receiving a signal indicating start or stop of calculation of position information and receiving a signal indicating transition from a standby state to an incoming call operation can be realized by receiving one channel. . Therefore, the number of required radio channels can be reduced, the configuration of the receiving unit of the mobile radio terminal can be simplified, and the power consumption of the mobile radio terminal can be suppressed.
  • the mobile communication system it is possible to reduce the power consumption and the size of the mobile radio terminal, and to reduce the traffic on the radio channel.
  • FIG. 6 is a block diagram showing a configuration of a mobile radio terminal in the mobile communication system according to the second embodiment of the present invention. Note that the same components as those in the first embodiment (FIG. 3) in FIG. 6 are denoted by the same reference numerals as those in FIG. 3, and detailed description is omitted.
  • the analysis unit 70 does not control each unit in accordance with the analysis result, but sends the analysis result to a comparison unit 73 described later, except for the analysis unit 4 in the first embodiment. It has the same configuration as 7.
  • the reception level detection section 71 detects the reception level of the paging signal extracted by the paging channel signal reception section 44 at predetermined time intervals, and sends the detection result to the storage section 72 and the comparison section 73.
  • the storage unit 72 stores the reception level of the paging signal detected by the reception level detection unit 71, and sends the storage result to the comparison unit 73.
  • the comparison unit 73 performs the following operation according to the analysis result of the analysis unit 70.
  • the comparison unit 73 calculates the difference between the current paging channel reception level (current reception level) and the previously detected paging channel reception level (previous reception level), and compares the calculated difference with a predetermined value. Compare with value. Further, comparing section 73 activates timing signal receiving section 41 and calculating section 74 only when the calculated difference is equal to or greater than a predetermined value.
  • Calculating section 74 has the same configuration as calculating section 42 in Embodiment 1 except that the calculated arrival time difference is transmitted to transmitting section 43.
  • the paging channel signal extracted by paging channel reception section 44 is sent to analysis section 70 and reception level detection section 71.
  • the reception level detector 71 detects the reception level of the extracted paging channel signal at predetermined time intervals.
  • the reception level of the detected paging channel signal is stored in storage section 72.
  • Analysis section 70 analyzes the contents of the paging channel signal (control section or control section and data sections 1 to 4), similarly to analysis section 47 in the first embodiment.
  • the analysis result is sent to the comparison unit 73.
  • the control section in the paging channel signal is “10 (position information calculation instruction)”, and any of the data sections to 4 in the paging channel signal includes information indicating its own terminal. If there is, first, the difference between the current reception level of the paging channel signal detected by the reception level detection unit 71 and the previous reception level of the paging channel signal stored in the storage unit 72 is calculated. Further, the calculated difference is compared with a predetermined value. Note that the predetermined value is different from the predetermined value used by the comparing unit 46 in the first embodiment. It can be set in a similar way.
  • the comparing section 73 does not activate the timing signal receiving section 41 and the calculating section 74. Conversely, if the calculated difference is equal to or greater than the predetermined value, it is recognized that the own terminal is moving, and the comparing unit 73 activates the timing signal receiving unit 41 and the calculating unit 74. .
  • the processing in the timing signal receiving unit 41 and the calculating unit 74 is the same as that in the first embodiment, and thus detailed description is omitted. However, the arrival time difference calculated by the calculation unit 74 is transmitted by the direct transmission unit 43 via the antenna 40.
  • a change in the reception level of the paging channel is used as an index indicating the movement state of the mobile radio terminal.
  • the reception level of any signal transmitted by the base station is described.
  • the movement state of the mobile radio terminal may be recognized based on the change. Specifically, it is preferable to use a signal whose transmission level is always constant among the signals transmitted from the base station. However, if the transmission level is reported to the mobile radio terminal, the mobile radio terminal can recognize the relative change in the reception level, so that the transmission level of the signal transmitted from the base station is constant. It is also possible to use signals that are not.
  • the mobile radio terminal detects the movement state of its own terminal based on a change in the reception level of a signal transmitted by the base station to be communicated (base station 1 in FIG. 1).
  • base station 1 in FIG. 1 the base station based on the reception level of the signal transmitted by the base station (the base stations 2 to 4 in FIG. 1) other than the base station to be communicated with will be described. It is also possible to detect the moving state of the terminal.
  • the mobile communication system As described above, according to the mobile communication system according to the present embodiment, among the mobile radio terminals that have received the signal instructing the calculation of the position information, the current reception level and the previous reception level of the signal transmitted from the base station are determined. Mobile wireless terminal whose difference is greater than or equal to a predetermined value Only the end calculates the arrival time difference and sends it to the base station. As a result, the power consumption of the mobile radio terminal can be reduced, and the traffic on the access channel can be reduced. Further, the processing load on the base station and the position calculation station that receive the position information (arrival time difference) from the mobile radio terminal can be reduced. Further, as compared with Embodiment 1, although a configuration for detecting the reception level is required, the frequency of calculating the arrival time difference can be reduced, so that the power consumption of the mobile wireless terminal can be suppressed.
  • a case will be described in which the position of a mobile wireless terminal in a call is detected.
  • various processes are performed for the call, so that power consumption generally increases.
  • processing for calculating an arrival time difference is performed in addition to processing for the call. Power consumption is further increased.
  • the mobile radio terminal when a signal instructing calculation of position information is received from the base station, the mobile radio terminal according to the first embodiment arrives at regular time intervals in order to detect the movement state of its own terminal. A time difference is calculated. By calculating the arrival time difference, the power consumption of the mobile radio terminal increases. However, the calculated arrival time difference is actually transmitted to the base station only when the difference from the previous arrival time difference is equal to or larger than a predetermined value. In other words, the arrival time difference that increases power consumption is calculated only to detect the moving state of the mobile radio terminal.
  • the movement status of the mobile radio terminal can be detected by the base station using the arrival time difference or the reception level of the signal transmitted from the mobile radio terminal. That is, in this embodiment, the base station detects the arrival time (propagation delay) or the reception level of the signal transmitted by the mobile radio terminal, and detects the current arrival time among the mobile radio terminals requiring position detection. And before arrival Instructs only mobile radio terminals whose difference from the specified value exceeds a predetermined value, or only mobile radio terminals whose difference between the current reception level and the previous reception level exceeds a predetermined value to calculate position information. To send a signal.
  • the base station calculates the arrival time (or reception level) of a signal (hereinafter referred to as a “traffic channel signal”) received via a traffic channel used for communication of information signals (voice and data). For each mobile radio terminal, it is detected and stored at specified time intervals.
  • a traffic channel signal a signal received via a traffic channel used for communication of information signals (voice and data).
  • the base station When a base station detects a mobile radio terminal that needs to detect location information, the base station first determines the current arrival time (current reception level) and the previous arrival time (previous reception level) for this mobile radio terminal. The difference between is compared with a predetermined value. If the difference is equal to or greater than a predetermined value, it can be determined that the mobile radio terminal is moving, so the base station instructs the mobile radio terminal to calculate position information via a control channel or the like. To send a signal. Conversely, if the difference is less than the predetermined value, it can be determined that the mobile radio terminal has not moved, and the base station transmits a signal instructing the mobile radio terminal to calculate position information. do not do.
  • the mobile radio terminal transmits the signal by each base station only when the signal received via the control channel (hereinafter referred to as “control channel signal”) includes the signal instructing the calculation of the position information.
  • the arrival time difference is calculated using the timing signal. Note that the calculation of the arrival time difference is the same as in the above-described embodiment, and a detailed description thereof will be omitted.
  • the mobile radio terminal transmits a traffic channel signal into which a signal relating to the calculated arrival time difference is inserted, to the base station.
  • the base station extracts information on the arrival time difference from the traffic channel signal and transmits the extracted information on the arrival time difference to the position calculation station. Subsequent operations performed by the position calculation station are the same as those in the above-described embodiment, and a detailed description thereof will be omitted.
  • the base station When the line terminal is in a call state, the base station detects the arrival time (propagation delay) or reception level of the signal transmitted by the mobile wireless terminal, and the current arrival time of the mobile wireless terminal that needs position detection. For mobile radio terminals whose difference between the previous arrival level and the previous arrival level exceeds a predetermined value, or only for mobile radio terminals whose difference between the current reception level and the previous reception level exceeds a predetermined value, Transmit the signal instructing calculation.
  • the mobile radio terminal for which position information detection is requested calculates the arrival time difference and transmits it to the base station only when the mobile terminal is surely moving. Therefore, it is possible to reduce the power consumption of the mobile radio terminal and reduce traffic on the traffic channel.
  • the mobile radio terminal it is possible to keep the power consumption of the mobile radio terminal low, so it is possible to select a small battery with a small capacity (including a rechargeable battery) for use in this mobile radio terminal. it can. As a result, the size of the mobile radio terminal can be reduced.
  • the base station detects the movement state of the mobile radio terminal in the call state, and is requested to detect the position information.
  • a case has been described in which a signal instructing calculation of position information is transmitted only to the mobile wireless terminal that is actually moving among the mobile wireless terminals.
  • the base station may transmit a signal instructing the calculation of the position information to all the mobile radio terminals requested to detect the position information.
  • the mobile radio terminal that has received the signal for instructing the calculation of the position information may calculate the arrival time difference and transmit it to the base station, regardless of the moving state of the own terminal.
  • the mobile radio terminal that has received the signal instructing the calculation of the position information uses the change in the arrival time difference (the level of the received signal) as in Embodiment 1 (Embodiment 2). Only when the terminal is moving, the arrival time difference may be calculated and transmitted to the base station. Even in this case, the power consumption of the mobile radio terminal can be reduced as compared with the conventional method.
  • the base station detects the moving state of the mobile radio terminal, and only the mobile radio terminal (and the mobile radio terminal that is actually moving) that has been requested to detect the position information receives the position information.
  • the transmission of the signal instructing the calculation of the information has been described as being limited to communication with the mobile radio terminal in the call state, the mobile radio terminal in the standby state described in the first and second embodiments has been described. It is also possible to apply to the communication of. By this means, the power consumption of the mobile radio terminal in the standby state can be further reduced as compared to Embodiments 1 and 2.
  • the position of the mobile radio terminal may be performed by any of the base stations.
  • the base station that calculates the position of the mobile radio terminal (for example, base station 1 in FIG. 1) transmits the position information of a plurality of base stations (for example, base stations 1 to 4 in FIG. 1) and transmits the base station 1. It is necessary to recognize the difference between the timing signal transmitted and the timing signals transmitted by the base stations 2 to 4.
  • the base station 1 can calculate the above difference using, for example, the received timing signals of the base stations 2 to 4.
  • any of a base station and a position calculation station can be used as a device for calculating the position of a mobile radio terminal.
  • the mobile radio terminal instructed to calculate the position information calculates the propagation delay time difference required for calculating the position information of the mobile radio terminal, and transmits the difference to the base station.
  • By transmitting it is possible to provide a mobile communication system that can reduce the power consumption and size of a mobile wireless terminal and reduce traffic on a wireless channel.
  • the present specification is based on Japanese Patent Application No. 11-312-153 filed on Jan. 2, 1999. This content is included here. Industrial applicability
  • the present invention is suitable for use in a mobile communication system that handles mobile wireless terminals such as a mobile phone and a PHS terminal, and in particular, is used in the field of mobile communication systems having a function of detecting the position of a mobile wireless terminal.

Abstract

L'invention concerne un système de communication mobile comprenant un radiotéléphone mobile. Le radiotéléphone mobile reçoit un signal transmis depuis un dispositif de station de base d'un objet de communication, et demande des informations de localisation pour calculer la différence d'heure d'arrivée entre un signal de synchronisation transmis d'un dispositif de station de base de référence parmi des stations de base comprenant la station de base de l'objet de communication et des signaux de synchronisation transmis des autres dispositifs de station de base. Le radiotéléphone mobile transmet ensuite la différence d'heure d'arrivée calculée au dispositif de station de base de l'objet de communication.
PCT/JP2000/007678 1999-11-02 2000-11-01 Systeme de communication mobile WO2001033248A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10524/01A AU1052401A (en) 1999-11-02 2000-11-01 Mobile communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP31215399 1999-11-02
JP11/312153 1999-11-02

Publications (1)

Publication Number Publication Date
WO2001033248A1 true WO2001033248A1 (fr) 2001-05-10

Family

ID=18025891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/007678 WO2001033248A1 (fr) 1999-11-02 2000-11-01 Systeme de communication mobile

Country Status (2)

Country Link
AU (1) AU1052401A (fr)
WO (1) WO2001033248A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104621A1 (fr) * 2003-05-26 2004-12-02 Commonwealth Scientific And Industrial Research Organisation Procede de localisation par radio
US7738436B2 (en) 2004-09-21 2010-06-15 Kabushiki Kaisha Kenwood Wireless communication system, wireless communication control apparatus, wireless communication apparatus and wireless communication method
CN101023690B (zh) * 2004-09-21 2010-06-16 株式会社建伍 无线通信控制设备和无线通信方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119104A (en) * 1990-05-04 1992-06-02 Heller Alan C Location system adapted for use in multipath environments
JPH04260230A (ja) * 1991-02-15 1992-09-16 Matsushita Electric Works Ltd 移動体測位システム
US5293645A (en) * 1991-10-04 1994-03-08 Sharp Microelectronics Technology, Inc. Apparatus and method for locating mobile and portable radio terminals in a radio network
JPH07248376A (ja) * 1994-03-11 1995-09-26 Kenwood Corp 移動体速度検出装置
JPH10221426A (ja) * 1997-02-10 1998-08-21 Jatco Corp 移動体情報装置および移動体探索システム
JPH10327464A (ja) * 1997-05-22 1998-12-08 Nippon Denki Ido Tsushin Kk 携帯電話の着信規制制御方法
JPH11252632A (ja) * 1998-03-05 1999-09-17 Matsushita Electric Ind Co Ltd 移動体通信システム及び移動無線端末位置検出方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119104A (en) * 1990-05-04 1992-06-02 Heller Alan C Location system adapted for use in multipath environments
JPH04260230A (ja) * 1991-02-15 1992-09-16 Matsushita Electric Works Ltd 移動体測位システム
US5293645A (en) * 1991-10-04 1994-03-08 Sharp Microelectronics Technology, Inc. Apparatus and method for locating mobile and portable radio terminals in a radio network
JPH07248376A (ja) * 1994-03-11 1995-09-26 Kenwood Corp 移動体速度検出装置
JPH10221426A (ja) * 1997-02-10 1998-08-21 Jatco Corp 移動体情報装置および移動体探索システム
JPH10327464A (ja) * 1997-05-22 1998-12-08 Nippon Denki Ido Tsushin Kk 携帯電話の着信規制制御方法
JPH11252632A (ja) * 1998-03-05 1999-09-17 Matsushita Electric Ind Co Ltd 移動体通信システム及び移動無線端末位置検出方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104621A1 (fr) * 2003-05-26 2004-12-02 Commonwealth Scientific And Industrial Research Organisation Procede de localisation par radio
US7738436B2 (en) 2004-09-21 2010-06-15 Kabushiki Kaisha Kenwood Wireless communication system, wireless communication control apparatus, wireless communication apparatus and wireless communication method
CN101023690B (zh) * 2004-09-21 2010-06-16 株式会社建伍 无线通信控制设备和无线通信方法
US7826403B2 (en) 2004-09-21 2010-11-02 Kabushiki Kaisha Kenwood Wireless communication control apparatus and wireless communication method to reduce inter-channel interference in narrow-band communications

Also Published As

Publication number Publication date
AU1052401A (en) 2001-05-14

Similar Documents

Publication Publication Date Title
KR100777950B1 (ko) 이동 무선 통신 방법, 이동 무선 통신 시스템, 기지국 제어장치 및 이동 무선 단말 장치
EP1359779B1 (fr) Terminal mobile de communication radio
JP2795304B2 (ja) 無線移動体の転移を制御する方法及びその装置
US10206239B2 (en) Simultaneous data transmission method based on multiple networks, and apparatus therefor
JP2001197548A (ja) 移動体通信システム
JPH10191421A (ja) Ｃｄｍａ基地局装置
EP3439404B1 (fr) Procédé, appareil et système de communication de données
JPH02256331A (ja) 無線通信システム
EP3897051A1 (fr) Procédé de transmission d'informations de liaison montante, appareil, station de base et terminal
JP3914844B2 (ja) 無瞬断ハードハンドオーバ制御装置及び方法
US20070015459A1 (en) Relaying radio communication between a base station and a mobile terminal using a control channel at a longer time interval
KR101004308B1 (ko) 이동 무선 통신 시스템 및 무선 기지국
JP2004320602A (ja) 基地局、通信システム及び基地局制御装置
EP0873640A1 (fr) Procede et dispositif permettant de reduire la consommation d'energie dans un systeme mobile de communication de donnees par paquets
JP2001028776A (ja) Ｐｈｓ（登録商標）向けの移動局におけるハンドオーバ方法
WO2001033248A1 (fr) Systeme de communication mobile
TWI517659B (zh) 無線通訊系統、行動通訊裝置及其運作方法
JP4216163B2 (ja) 移動通信端末
JP2006005502A (ja) 移動通信システムおよびその通信方法
CN103781052A (zh) 通信方法、系统及多模终端
JP4385665B2 (ja) 無線通信装置及び通信方式
WO1999016190A1 (fr) Equipement et procede pour communication radio
JP2005260434A (ja) 移動通信端末装置
KR101038982B1 (ko) Ｒｆｉｄ를 이용한 비동기망에서 동기망으로의 핸드오버방법과 이를 위한 이동통신 단말 및 ｒｆｉｄ 탐지장치
CN101836475A (zh) 移动通信系统、公共信道发送控制设备及其中使用的方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 09869063

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642