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WO1999034630A1 - Procede permettant d'attribuer et de selectionner des canaux radio - Google Patents

Procede permettant d'attribuer et de selectionner des canaux radio Download PDF

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Publication number
WO1999034630A1
WO1999034630A1 PCT/JP1998/005859 JP9805859W WO9934630A1 WO 1999034630 A1 WO1999034630 A1 WO 1999034630A1 JP 9805859 W JP9805859 W JP 9805859W WO 9934630 A1 WO9934630 A1 WO 9934630A1
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WO
WIPO (PCT)
Prior art keywords
channel
zone
radio
wireless
channels
Prior art date
Application number
PCT/JP1998/005859
Other languages
English (en)
Japanese (ja)
Inventor
Yasunori Suzuki
Toshio Nojima
Original Assignee
Ntt Mobile Communications Network Inc.
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 Ntt Mobile Communications Network Inc. filed Critical Ntt Mobile Communications Network Inc.
Priority to CA002281578A priority Critical patent/CA2281578A1/fr
Priority to JP51601399A priority patent/JP3795536B2/ja
Publication of WO1999034630A1 publication Critical patent/WO1999034630A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/12—Fixed resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a radio channel allocation method used for a mobile radio communication system using a plurality of radio channels simultaneously, and a method of selecting an allocated radio channel.
  • FCA has been practically used in mobile radio communication systems.
  • NTT Analog NTT system
  • PDC Personal Digital Cellular
  • DCA has been put into practical use without a digital cord.
  • the setting of the radio channel between the base station and the mobile station is performed by selecting an empty radio channel from the radio channels assigned to the base station in the zone where the mobile station is located. A channel was selected, and a mobile radio line was set up with the selected radio channel.
  • the radio channel assigned to each base station may cause interference with the radio channels of other base stations.
  • one mobile station has adopted a mobile radio communication system using a plurality of radio channels.
  • this communication method using multiple radio channels in order to achieve high-speed transmission and high-quality transmission, a mobile station uses multiple radio channels assigned to the base station in the zone to which it belongs (the zone in which it is located). I have.
  • the wireless channel allocation method in the repetitive zone is different only in that it only uses the radio channel assigned to be used preferentially in the visited zone. As was essentially the same.
  • the overall frequency effective utilization efficiency (the product of the utilization rate on the frequency axis and the utilization rate on the spatial axis) is higher when using multiple radio channels simultaneously. ) Decreased.
  • An object of the present invention is to allocate radio channels that do not reduce the overall frequency utilization efficiency even when one mobile station uses a plurality of radio channels at the same time as compared to a case where a single mobile station uses a single radio channel, and It is to provide a selection method.
  • the present invention provides a mobile radio communication system for realizing a mobile radio communication system by simultaneously using a plurality of radio channels in each of a plurality of zones constituting a repetition area of wireless channels.
  • the radio channel allocation method for the zones at least one of the plurality of radio channels is allocated to a radio channel that can be used preferentially in each zone, and
  • a plurality of radio channels other than the radio channel that can be used preferentially in each zone are assigned to each of the above zones as radio channels that can also be used in a zone adjacent to each zone.
  • this mobile radio communication system by allocating a radio channel in this way, at least one of a plurality of radio channels used simultaneously by the mobile station is allocated a radio channel that can be used preferentially in the visited zone.
  • the remaining radio channels of the plurality of radio channels can be used by selecting an unused radio channel from among the radio channels that can be used preferentially in the zone adjacent to the visited zone. Can be used in the in-zone zone.
  • the wireless channel assignment method of the present invention can be applied irrespective of whether the wireless channel is set by frequency division, time division, or code division, or any combination thereof.
  • the mobile unit will handover to an empty wireless channel with priority in another zone. Can be used. This allows multiple radio channels to be used simultaneously.
  • each zone exists in each of the plurality of zones.
  • the mobile station selects at least one of the plurality of radio channels as the radio channel assigned to the zone where the mobile station is located, and selects the plurality of radio channels.
  • radio channels other than the radio channel assigned to the zone where the mobile station is located are assigned to a plurality of zones adjacent to the zone where the mobile station is located. Selected as the radio channel assigned to the local zone and used in the visited zone.
  • the process in which the mobile station selects a radio channel in the adjacent zone includes (1) a process of detecting the reception level of the radio channel in the adjacent zone, and (2) a process of measuring co-channel interference from the detected reception level. (3) a step of comparing the measured reception level with a predetermined value; (4) if the compared reception level is equal to or higher than a predetermined value, the channel is located between the base station and the mobile station in the local zone. And (5) selecting a different radio channel in an adjacent zone when the compared reception level is equal to or lower than a predetermined value.
  • the step of selecting a radio channel in a zone adjacent to the mobile station may further include a step of controlling the transmission output of the base station and the mobile station of the set radio channel to be close to a predetermined reception sensitivity.
  • the mobile station that implements the above-described radio channel selection method is a mobile station.
  • the radio channel assignment method and the selection method of the present invention have the following effects.
  • the frequency utilization efficiency can be improved compared to the conventional wireless channel allocation method
  • FIG. 1 is a wireless zone configuration diagram illustrating a wireless channel assignment method according to the present invention.
  • FIG. 2 is a simplified zone configuration diagram of the embodiment of FIG.
  • FIG. 3 is a diagram showing the relationship between FIG. 3A and FIG. 3B.
  • FIG. 3A and FIG. 3B are block diagrams showing the configuration of a mobile station relating to the assignment of a wireless channel according to the present invention.
  • FIG. 4 is a flowchart showing a process of selecting a mobile station for explaining the radio channel selection method of the present invention.
  • FIG. 5 is a flowchart showing another process of the selection in FIG.
  • FIGS. 6A and 6B are diagrams showing a case where radio channel assignment is applied to frequency division.
  • FIGS. 7A and 7B are diagrams showing a case where radio channel assignment is applied to time division.
  • FIGS. 8A and 8B are diagrams showing a case where radio channel assignment is applied to code division.
  • FIG. 9A and FIG. 9B are diagrams showing a case where the assignment of the wireless channel is set by simultaneously using the frequency division and the time division.
  • FIG. 10A and FIG. 10B are diagrams showing a case where radio channel assignment is set using time division and code division simultaneously.
  • FIG. 11A and FIG. 11B are diagrams showing a case where the assignment of the wireless channel is set by simultaneously using code division and frequency division.
  • FIG. 12A and FIG. 12B are diagrams showing a case where frequency division, time division, and code division are applied to a wireless channel set by using them simultaneously.
  • Figure 1 shows the assignment of wireless channels.
  • the switching center 108 that controls the inter-use repetition area 100 of wireless channels consisting of a total of seven zones, each having a base station, and the base stations connected to it. 10 1 to 10 7) and an example of the state of mutual connection between exchanges.
  • the switching center 108 and the base stations (101 to 107) in each zone are connected by a dedicated line 109.
  • the dedicated line 109 is a normal communication line.
  • the radio channel number used for each base station (101 to 107) is changed from the exchange 108 to a dedicated line 1010 by a predetermined radio channel assignment plan. Specifically, each base station is instructed via 9.
  • FDMA frequency division
  • each wireless channel has a 25 KHz bandwidth, and the frequency interval of each wireless channel is 50 KHz.
  • the wireless channel number 1 is assigned to 800.500 MHz, the wireless channel number 60 becomes 803.00 OMHz.
  • Table 1 Base station numbers Assigned wireless channel numbers
  • radio channel numbers 1 to 5 are assigned to base station number 1. This is a 5 carrier (carrier) from 800.500 MHz to 800.250 MHz.
  • a correspondence table as shown in Table 1 is stored in the exchange shown in FIG.
  • the allocation table stored in the exchange 108 may be stored in a higher-level exchange that collectively manages a plurality of exchanges.
  • the storage method is realized by software or the like in a base station control device in the exchange, for example.
  • the plurality of radio channels allocated to each zone are efficiently selected between the mobile station and the base station so that the frequency use efficiency does not decrease, and the line is set. This will be described below. For the sake of simplicity, a case will be described below with reference to FIG. 2 in which it is assumed that only two channels are used at the same time for the radio channels allocated to each zone by frequency division.
  • the wireless communication zone consists of seven zones (zones 1 to 7) as shown in Fig. 2.
  • Zone 1 has Zones 2 to 7 adjacent to each other, forming a repeating area 8.
  • base stations in each zone are assigned frequencies fl to f7, respectively, and have a radio channel that can be used preferentially by a mobile station in the area, and a priority to other zones.
  • 6 wireless channels are assigned.
  • the radio channel having frequency f1 is set as the radio channel having priority in its own zone
  • the channel having frequency f2 to f7 is set in each of the other zones (zones 2 to 7).
  • the base station 10 of the zone 1 is allocated as a wireless channel having a priority, and facilities for communicating using these wireless channels are prepared.
  • the mobile station in each zone has the function of communicating with the wireless channel with priority for the zone in which it is located, and the function of simultaneously communicating with the wireless channel with priority for other zones. .
  • the mobile station uses this identification number.
  • the wireless channel having the priority can be known from the identification number.
  • the mobile station which is located in one zone, determines how the plurality of radio channels allocated in this manner are selected by the mobile station.
  • the case where the lines are set simultaneously will be described together with an example of the configuration.
  • the mobile station as a mobile station shown in FIG. 3A and FIG. 3B has two sets of transmitting / receiving sections in the radio section.
  • the first receiving unit 110 and the second receiving unit 120 are high-frequency amplifiers 112, 122, receiving mixers 114, 124, intermediate amplifiers 114, 126, and demodulators, respectively. It consists of 118 and 128, each receiving a radio channel of a different frequency and converting it to a baseband signal.
  • the first transmission section 13 0 and the second transmission section 140 consist of modulators 13 6 and 14 6, transmission mixers 13 4 and 14 4, and transmission power amplifiers 13 2 and 14 2. Is done.
  • First transmitting section 130 and second transmitting section 140 transmit transmission signals from baseband processing section 150 on radio channels having different frequencies.
  • the frequency synthesizer 103 includes the reception mixers 114 and 124 of the first and second receiving units (110 and 120), and the first and second transmitting units (130 and 120). The corresponding frequencies are sent to the transmission mixers 134, 144 of (140) to determine the respective reception frequencies and transmission frequencies.
  • the reception signal from the radio unit and the transmission signal to the radio unit are processed by the reception signal processing circuit 152 and the transmission signal processing circuit 154 of the baseband signal processing unit 150.
  • the signal from the reception signal processing circuit 152 is transmitted to the user of the mobile device by the receiver 170.
  • Signals from the transmitter 180 and the like are processed by the transmission signal processing circuit 154 and sent to the radio unit.
  • the control unit includes a control circuit 160 including a display key 190, a CPU, and the like, and controls the baseband signal processing unit 150 and the wireless unit.
  • the baseband processing unit has a transmission / reception timing control circuit, which sends a timing signal to the control unit.
  • the mobile station 10 residing in the zone 1 sets up a line in the zone 1 with the first radio channel of the frequency f 1 having priority.
  • the setting of this line is performed in the same manner as the setting of the conventional wireless channel between the mobile station existing in the normal serving zone and the base station in the serving zone.
  • the mobile station 10 observes co-channel interference of other radio channels, A wireless channel and a line setting below a predetermined value are set. For the setting of this radio channel, a radio channel having a priority in another zone is also possible.
  • the mobile station 10 can set up a line between the second radio channel of the frequency f2 having a priority in zone 2 and the base station in zone 1 where the mobile station is located .
  • the mobile station first notifies the base station in zone 1 in which the mobile station is to use the second wireless channel.
  • the base station in zone 1 uses the second radio channel to set up the line for mobile stations in zone 1.
  • the mobile station 10 uses the first and second radio channels.
  • the mobile station 10 always observes co-channel interference on the second radio channel. Then, if the line quality of the second wireless channel is degraded during communication, the mobile station further hands over to a wireless channel having priority over another zone. Here, for example, handover is performed to a wireless channel having priority in the third zone.
  • the mobile station notifies the base station of the visited zone of the wireless channel to be handed over, and sets the wireless channel having priority over zone 3 of the visited base station as the second wireless channel. Use this to set the line.
  • Radio channels that have priority in other zones can be used preferentially in priority zones. If a wireless channel with priority in another zone is used simultaneously in two or more zones, for example, the own zone and another zone, the channel quality is degraded due to co-channel interference.
  • a mobile station using a non-priority wireless channel in the visited zone detects line quality deterioration due to co-channel interference, it hands over the second channel used and hands over to another wireless channel. I do.
  • the mobile station always uses two radio channels. Can be.
  • the mobile station 10 first selects a radio channel of frequency ⁇ 1 assigned to the base station in zone 1 as the first radio channel. Then, it communicates with the base station and determines its radio channel. For example, the first transmitting unit 130 and the first receiving unit 110 in FIGS. 3A and 3B are set to this frequency. Control the frequency synthesizer 103.
  • the mobile station 10 detects an unused wireless channel having a frequency different from that of the visited zone in the adjacent zone. This is performed using second transmitting section 140 and second receiving section 120 in FIGS. 3A and 3B. As shown in FIG. 2, it is assumed that a vacancy is found in the radio channel of the adjacent zone 2 at the frequency f 2. This is selected as the second wireless channel, and the selected wireless channel is communicated to the serving base station, and this wireless channel is set as the wireless channel with the serving zone base station. This allows the mobile station to use the two radio channels simultaneously as the radio channels of the visited zone. Since an unused radio channel is used, the frequency use efficiency of the mobile radio communication system does not decrease.
  • the first selection is to select a radio channel assigned in advance to the zone in which the mobile station is located.
  • the second choice is next Select the wireless channel assigned to the contact zone in advance as the wireless channel of the visited zone.
  • the selection of the second wireless channel causes the above-mentioned co-channel interference between the visited zone and the adjacent zone, which is a dominant factor in the deterioration of the quality of the wireless channel.
  • the radio channel setting is set by the visited zone base station and the mobile station as the visited zone radio channel with respect to the empty radio channel of the adjacent zone. At this time, the mobile station and the base station perform transmission power control to reduce co-channel interference to adjacent zones.
  • the mobile station immediately performs handover to a radio channel in a different adjacent zone.
  • mobile radio communication using a plurality of radio channels simultaneously can be performed without reducing the frequency utilization efficiency while avoiding the influence of co-channel interference.
  • FIG. 4 shows a process in which the mobile station 10 makes a second selection after selecting the first radio channel.
  • This first wireless channel is a wireless channel allocated to the visited zone, and is the same as the conventional wireless channel selection, and therefore the description is omitted.
  • a free wireless channel in a zone adjacent to the visited zone is detected by the mobile station 10 (S202).
  • Free wireless channel from base station The co-channel interference in the channel is measured (S204), and it is determined whether the power ratio to the measured value is equal to or greater than a predetermined value (S206).
  • the idle radio channel is notified to the serving base station (S208).
  • the mobile station 10 performs subsequent communication with the base station in the area where the mobile station 10 is located. Thereafter, the mobile station 10 and the base station in the visited zone mutually control the transmission power of the second radio channel (S210), and control the transmission power to near the required reception sensitivity (S211). 2).
  • the transmission power control on the mobile station side is performed by the control circuit 160 with respect to the transmission power amplifier 144 of FIG. 3B. This control may be a low-speed control about once every few seconds.
  • the range of transmission output control requires a wide dynamic range from the maximum transmission output to the vicinity of required reception sensitivity, but the accuracy of transmission output control of several dB is sufficient.
  • the purpose of transmission power control is to reduce co-channel interference. This completes the selection of the second radio channel (S2114).
  • the mobile station detects a wireless channel in a different adjacent zone (S 202). Thereafter, the mobile station selects a radio channel to be used by the above-described radio channel selection processing.
  • interference is measured for the second wireless channel even during communication. This processing will be described with reference to the flowchart of FIG. In the flowchart of FIG. 5, after the selection, the same channel interference is measured together with the transmission power control (S220). If the result of the measurement is equal to or less than the predetermined value, the wireless channel is continued to be used (Y2S in S222).
  • the handover is performed on an empty channel in another adjacent zone.
  • the process of selecting an empty channel is similar to the process of selecting a channel in FIG.
  • the above process communicates with the base station over two radio channels as described in FIG. The case of trust has been described. If the mobile station requires two or more radio channels, the above-described process of the empty channel is performed.After the above-mentioned second radio channel is selected, the same radio channel selection is performed for the required number of radio channels. Do. As a result, a plurality of wireless channels can be allocated to the mobile station without lowering the frequency use efficiency.
  • the wireless channel allocation method according to the present invention and the specific method of selecting the allocated wireless channel have been mainly described for the case where the wireless channel is configured by frequency division.
  • the allocation method is not limited to this, and various wireless communication systems, for example, a TDMA (Time Division Multiple Access) system in which channels are formed by time-division slots, and a CDMA (Code
  • TDMA Time Division Multiple Access
  • CDMA Code
  • the allocation of the wireless channel of the present invention is also applied to various multiplexing systems such as the Division Multiple Acces s) system in the same manner as described above.
  • FIGS. 6A and 6B show a case where the present invention is applied to a frequency-divided wireless channel.
  • FIG. 6A is the same as FIG. 2 and shows an example in which one repetition zone is composed of seven zones.
  • the radio channel is set by dividing the frequency band.
  • a radio channel of a certain frequency band is preferentially assigned to the first zone, and a mobile station located in the first zone has priority.
  • a carrier with priority in zone 1 is used as the first radio channel.
  • the second radio channel is, for example, the carrier for which Zone 3 has priority, Select the channel with the lowest interference value and use it in zone 1. Then, when the line quality of the second channel is degraded, for example, handover is performed to a carrier in which zone 6 has priority.
  • FIG. 7A is the same as FIG. 6A, and shows an example in which one zone is composed of seven zones.
  • the radio channel is composed of time slots, and each zone has a priority time slot.
  • a time slot with a priority in zone 1 is used as the first radio channel.
  • a time slot with priority in zone 3 is used in zone 1 as the second radio channel.
  • a handover to a time slot for example, a radio channel of zone 6) having a priority in another zone is performed.
  • FIGS. 8A and 8B show a case where the present invention is applied to a code-divided wireless channel.
  • FIG. 8A shows an example in which one repetition zone is composed of seven zones, similarly to FIG. 6A.
  • the radio channel is configured by using a plurality of orthogonal codes, multiplying the orthogonal code by a signal, and spreading the signal.
  • the first wireless channel uses an orthogonal code having a priority in zone 1.
  • the second radio channel uses an orthogonal code having priority in zone 3 in zone 1. If the line quality on this radio channel degrades, handover to another radio channel with priority in another zone (for example, a zone 6 radio channel). Bar can be.
  • FIGS. 9A and 9B show a case where the present invention is applied to a wireless channel set by simultaneously using frequency division and time division.
  • FIG. 9A shows an example in which, as in FIG. 6A, one repetition zone is composed of seven zones.
  • the radio channel is set by dividing it by frequency and time slot.
  • the first wireless channel uses a carrier and a time slot with priority in zone 1.
  • the carrier channel and time slot that have priority in zone 3 are used in zone 1. If the line quality of this radio channel degrades, handover to another radio channel with priority in another zone (for example, the radio channel in zone 6) is possible.
  • FIGS. 10A and 10B show a case where the present invention is applied to a wireless channel set by simultaneously using time division and code division.
  • FIG. 1OA shows an example in which, as in FIG. 6A, one repetition zone is composed of seven zones.
  • the radio channel is set by dividing it by time slots and orthogonal codes.
  • a time slot having priority in zone 1 and a wireless channel of orthogonal code are used as the first wireless channel.
  • a time slot having a priority in zone 3 and an orthogonal code radio channel are used in zone 3. If the line quality of this radio channel deteriorates, handover to another radio channel with priority in another zone (for example, the radio channel in zone 6) is possible.
  • FIGS. 11A and 11B show a case where the present invention is applied to a wireless channel set using code division and frequency division simultaneously.
  • FIG. 11A shows an example in which one repetition zone is composed of 7 zones, similarly to FIG. 6A.
  • the radio channel is divided and set by the orthogonal code and the frequency.
  • the first radio channel uses the orthogonal code and carrier radio channel that have priority in zone 1.
  • the second radio channel uses, for example, a radio channel of an orthogonal code and a carrier having priority in zone 3 in zone 1. If the line quality of this radio channel degrades, it can hand over to another radio channel that has priority in another zone (for example, a zone 6 radio channel).
  • FIG. 12A and 12B show the case of application to a wireless channel set using frequency division, time division, and code division simultaneously.
  • FIG. 12A shows an example in which one zone is composed of seven zones as in FIG. 6A.
  • the radio channel is set by dividing it by frequency, time slot and orthogonal code.
  • the first wireless channel uses a carrier with priority in zone 1, a time slot, and an orthogonal code.
  • the second radio channel uses, for example, a carrier having a priority in zone 3, a time slot, and an orthogonal code in zone 1. If the line quality of this radio channel degrades, it can hand over to another radio channel that has priority in another zone (for example, the radio channel in zone 6).
  • the mobile station can set a plurality of radio channels without being limited to the radio channel assigned preferentially to the zone in which the mobile station is located, so that the frequency use efficiency can be improved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Procédé permettant d'attribuer une pluralité de canaux radio, de façon à obtenir un système de communication radiomobile dans lequel une pluralité de canaux radio sont utilisés simultanément dans chacune des pluralités de zones (1-7) formant une plage (8) dans laquelle lesdits canaux sont réutilisés de façon itérative. Au moins un des canaux radio est attribué à une utilisation préférentielle dans chaque zone, tandis que les autres canaux sont attribués à une utilisation dans n'importe quelle zone adjacente. Une station mobile (10) sélectionne un premier canal radio à une fréquence (f1) ayant été attribuée à une zone visitée (1); elle détecte les canaux non utilisés à des fréquences différentes (f2-f7) attribuées à des zones adjacentes, de façon à sélectionner l'un desdits canaux comme second canal; elle indique les canaux sélectionnés à la station de base située dans la zone visitée (1); et elle utilise lesdits canaux pour établir la connexion avec la station de base de la zone visitée (1).
PCT/JP1998/005859 1997-12-25 1998-12-24 Procede permettant d'attribuer et de selectionner des canaux radio WO1999034630A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002281578A CA2281578A1 (fr) 1997-12-25 1998-12-24 Procede permettant d'attribuer et de selectionner des canaux radio
JP51601399A JP3795536B2 (ja) 1997-12-25 1998-12-24 無線チャネル割り当ておよび選択方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP35853597 1997-12-25
JP35853497 1997-12-25
JP9/358535 1997-12-25
JP9/358534 1997-12-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007533254A (ja) * 2004-04-15 2007-11-15 クゥアルコム・フラリオン・テクノロジーズ、インコーポレイテッド 複数の受信機チェーンを有する受信機を使用して複数のキャリア間で選択するための方法及び装置
JP2014131363A (ja) * 2009-09-25 2014-07-10 Sony Corp 中継装置、管理サーバ、および通信端末
US9118358B2 (en) 2004-04-15 2015-08-25 Qualcomm Incorporated Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171093A1 (fr) * 2011-06-16 2012-12-20 Research In Motion Limited Gestion d'interférence de liaison montante guidée mobile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63190435A (ja) * 1987-02-02 1988-08-08 Nippon Telegr & Teleph Corp <Ntt> 無線回線制御方式
JPH09187065A (ja) * 1996-01-08 1997-07-15 Hitachi Ltd スロット割り当て方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63190435A (ja) * 1987-02-02 1988-08-08 Nippon Telegr & Teleph Corp <Ntt> 無線回線制御方式
JPH09187065A (ja) * 1996-01-08 1997-07-15 Hitachi Ltd スロット割り当て方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007533254A (ja) * 2004-04-15 2007-11-15 クゥアルコム・フラリオン・テクノロジーズ、インコーポレイテッド 複数の受信機チェーンを有する受信機を使用して複数のキャリア間で選択するための方法及び装置
US9118358B2 (en) 2004-04-15 2015-08-25 Qualcomm Incorporated Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier
JP2014131363A (ja) * 2009-09-25 2014-07-10 Sony Corp 中継装置、管理サーバ、および通信端末

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