WO2006135020A1 - 基地局及び基地局で使用される方法 - Google Patents
基地局及び基地局で使用される方法 Download PDFInfo
- Publication number
- WO2006135020A1 WO2006135020A1 PCT/JP2006/312060 JP2006312060W WO2006135020A1 WO 2006135020 A1 WO2006135020 A1 WO 2006135020A1 JP 2006312060 W JP2006312060 W JP 2006312060W WO 2006135020 A1 WO2006135020 A1 WO 2006135020A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mobile station
- different frequency
- frequency measurement
- timing
- base station
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims description 79
- 238000010586 diagram Methods 0.000 description 16
- 238000010295 mobile communication Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
Definitions
- Base station and method used in base station are Base station and method used in base station
- the present invention relates generally to the technical field of mobile communications, and more particularly to a base station and a method used in the base station.
- MBMS Multicast Broadcast Multimedia Service
- MBMS point-to-multipoint Traffic Channel Data power S, transmitted on the S-CCPCH (Secondary Common Control Physical Channel) 1 at a transmission time interval (TTI) of 40 ms or 80 ms.
- TTI transmission time interval
- S-CCPCH downlink physical over which MTC H is transmitted over the air. Is a channel.
- a wireless network cannot provide coverage for all regions in the same frequency band, but if a different frequency band can be used to cover all regions, the base station in that area can Informs the mobile station that the cell is in the different frequency measurement area.
- fl and f 2 represent different frequency bands, and the shaded cell is the different frequency measurement area. It corresponds to. The mobile station in this cell performs different frequency measurement when the received power level falls below the broadcast threshold.
- the mobile station In performing different frequency measurement, the mobile station needs to receive a signal in a frequency band different from the frequency band received in the serving cell. At this time, a mobile station having two RF paths as shown in FIG. 3A can simultaneously measure different frequencies while receiving the signal of its own cell. Providing multiple RF paths greatly affects the cost of the mobile station. Therefore, as shown in FIG. 3B, only one RF path is implemented, and some mobile stations receive (measure) a frequency synthesizer according to a desired carrier frequency. The power that is more common, may not. In other words, when a mobile station performs different frequency measurement, it is usual to adjust the frequency synthesizer to the frequency to be measured and not receive a signal from its own cell during measurement.
- the base station needs to grasp the different frequency measurement timing of each mobile station and perform control (DTX: Discontinuous Transmission) unless the mobile station transmits downlink user data at the timing when the mobile station performs the different frequency measurement.
- DTX Discontinuous Transmission
- the timing at which a mobile station measures different frequencies is defined by the following equation.
- the mobile station performs different frequency measurement with a system frame number (SFN) that satisfies the above formula.
- SFN is a frame number
- mod is a modulo operation
- C—RNTI is a mobile station identifier assigned to a mobile station for each cell. Since N, M—REP, and n are fixed parameters, the different frequency measurement timing of the mobile station in each cell is distributed from the above equation.
- the above formula assumes that mobile station individual data is transmitted from the base station to each mobile station. In other words, as shown in FIG. 4A, at the timing when a certain mobile station performs different frequency measurement, other mobile stations can receive the data so that the data is not transmitted on the downlink. Is avoided. This type of background art is described in Non-Patent Document 1.
- a method of performing some calculation on the individual identifier of each mobile station and distributing the different frequency measurement timing of each mobile station may be a suitable force for transmitting individual data.
- This is a problem when multicast services are provided to multiple mobile stations by multicast, as in BMS.
- all mobile stations belonging to the same multicast group may perform different frequency measurement, and there may be little or no timing.
- the base station always transmits MBMS data, and data transmission and different frequency measurement may collide, and the mobile station entering the different frequency measurement receives a radio signal partially missing. I'll end up.
- Channel coding of MBMS data is performed in units of 40msZ80ms, and different frequency measurement is performed in units of 10ms, so the mobile station cannot receive the data block transmitted at the time of different frequency measurement. .
- it is necessary to compensate by increasing the base station transmission power associated with MBMS transmission. This is shown in Figure 4B.
- Non-Patent Document 1 3GPP TS 25. 331 V6. 4.0 (2004-12), 8. 5.11, p243 Disclosure of Invention
- the present invention has been made to address at least one of the above-mentioned problems, and the problem is used in a base station and a base station that at least reduce data loss caused by different frequency measurement. Is to provide a method.
- timing determination means for determining a different frequency measurement timing, which is a timing at which the mobile station measures a signal having a frequency different from the frequency of the serving cell, A base station having a transmission means for transmitting data is used.
- the timing determination means assigns the same different frequency measurement timing to at least two mobile stations belonging to the same multicast gnole.
- the transmission means transmits data to mobile stations in the multicast group while avoiding the different frequency measurement timing.
- FIG. 1 is a diagram showing a data flow in MBMS.
- FIG. 2 is a diagram showing cells that require different frequency measurement and cells that do not require measurement.
- FIG. 3A is a diagram showing a receiving unit of a mobile station.
- FIG. 3B is a diagram showing a receiving unit of another mobile station.
- FIG. 4A is a diagram showing an example of scheduling of different frequency measurement timing.
- FIG. 4B is a diagram showing a scheduling example of different frequency measurement timing.
- FIG. 5 is a diagram showing a downlink shared control channel and a shared data channel.
- FIG. 6 is a functional block diagram of a base station controller.
- FIG. 7A is a diagram showing an operation example according to one embodiment of the present invention.
- FIG. 7B is a diagram showing an operation example according to one embodiment of the present invention.
- FIG. 8 is a diagram showing a downlink shared control channel and a shared data channel.
- FIG. 9 is a functional block diagram of a base station control apparatus.
- FIG. 10A is a diagram showing an operation example according to one embodiment of the present invention.
- FIG. 10B is a diagram showing an operation example according to one embodiment of the present invention.
- the different frequency measurement timings of all mobile stations belonging to a multicast group are unified.
- the base station controls the measurement timing.
- downlink radio resources used for the broadcast service are efficiently used.
- a shared data channel is applied to transmission / reception of downlink user data.
- the base station notifies the mobile station of the shared data channel assignment. This notification is made on a shared control channel that identifies the mobile station by MAC identifier.
- FIG. 6 shows a functional block diagram of the control apparatus of the base station according to the present embodiment.
- the control device of the ground station has a mobile station multicast group attribute management unit, a mobile station different frequency measurement timing determination 'management unit, a different frequency measurement timing notification unit, and a multicast data transmission unit.
- the “mobile station multicast group attribute management unit” determines whether the mobile station belongs to a multi-cast group and manages the multicast group to which the mobile station belongs.
- the “mobile station different frequency measurement timing determination 'management unit” determines and manages the different frequency measurement timing of the mobile station.
- the “different frequency measurement timing notification unit” notifies each mobile station of the different frequency measurement timing.
- the “multicast data transmission unit” transmits multicast data.
- FIG. 7A and 7B are flowcharts showing an operation example according to one embodiment of the present invention.
- the base station controller determines whether the mobile station belongs to a multicast group. (Step 2). If it belongs, it is determined which multicast gnole it belongs to. These are mainly managed by the “Mobile Station Multicast Group Attribute Management Unit”. For example, this information may be notified directly to the base station by the mobile station, or may be notified from the original base station when the mobile station has moved from the service area of the adjacent base station.
- the "mobile station multicast group attribute management unit” notifies the mobile station multicast group attribute to the "mobile station different frequency measurement timing determination 'management unit". If the mobile station belongs to the multicast gnole, the “mobile station different frequency measurement timing determination / notification unit” assigns the different frequency measurement timing for the multicast gnole to the mobile station (step 3). Conversely, if the mobile station does not belong to the multicast group, an individual different frequency measurement timing is assigned to the mobile station (step 4). In any case, the assigned timing is notified to the mobile station by the “different frequency measurement timing notification unit” (step 5).
- the mobile stations that do not belong to the multicast group or the mobile stations that belong to different multicast groups may have the same frequency measurement timing even if they are different. Assign the same different frequency measurement timing.
- the specific method of specifying the different frequency measurement timing is specified by, for example, the measurement frame period and measurement frame offset. The law can be considered.
- the "multicast data transmission unit" indicates that the different frequency measurement timing of the multicast group is "mobile station different frequency measurement”.
- Multicast data is transmitted by TTI, which is determined by “Timing Determination and Management Department” and does not overlap with the different frequency measurement timing of the multicast group.
- the base station determines whether or not to perform different frequency measurement at the next TTI (step 2). If so, the flow proceeds to step 3 and waits for 1 TTI before returning to step 2.
- step 4 the data is treated as a candidate for transmission at the next TTI (step 4), and one of the candidates to be transmitted is selected (step 5). It is determined whether or not data has been selected for transmission. If it has not been transmitted, the flow waits for 1 TTI (step 3) and returns to step 2. If the data was selected for transmission, it is transmitted in step 7.
- a shared data channel is applied to transmission / reception of downlink user data.
- the base station notifies the mobile station of the shared data channel assignment via the shared control channel.
- mobile stations are distinguished by MAC identifiers.
- FIG. 9 shows a functional block diagram of a base station controller necessary for the present embodiment.
- the base station controller shown in FIG. 9 has a mobile station multicast group attribute management unit, a MAC identifier determination 'management unit, a mobile station different frequency measurement timing calculation' management unit, and a multicast data transmission unit.
- the “mobile station multicast group attribute management unit” manages whether or not a mobile station belongs to a multicast group, and if so, manages the multicast group to which the mobile station belongs.
- the “MAC identifier determination / management unit” allocates and manages MAC identifiers assigned to mobile stations.
- “Mobile station different frequency measurement timing calculation and management unit” calculates and manages the different frequency measurement timing from the MAC identifier.
- Multicast data transmission "Receiver” transmits multicast data.
- FIG. 10 shows a flowchart of an operation example according to the present embodiment.
- the base station controller determines whether the mobile station belongs to multicast gnole (step 2). .
- the “mobile station multicast group attribute management unit” confirms which multicast group it belongs to. For example, this information may be notified directly to the base station by the mobile station, or when the mobile station has moved from the service area of the adjacent base station, it is grasped by receiving notification from the original base station. Also good.
- the “mobile station multicast group attribute management unit” notifies the “MAC identifier determination / management unit” of the multicast gnope attribute of the mobile station. If the mobile station belongs to the multicast group, the “MAC identifier determination 'management unit” assigns the MAC identifier for the multicast gnole to the mobile station (step 3). Conversely, if the mobile station does not belong to the multicast group, an individual MAC identifier is assigned to the mobile station and notified to the “different frequency measurement timing calculation 'management unit” (step 4).
- the "different frequency measurement timing calculation 'management unit” obtains and manages the different frequency measurement timing of each mobile station or multicast group using a mathematical formula that depends on a predefined MAC identifier (step 5).
- the mobile station also obtains the different frequency measurement timing using the same formula using the assigned MAC identifier.
- the calculated different frequency measurement timing is also unified. If the calculated different frequency measurement timing is unified, the MAC identifier assigned to the mobile station may be different.
- the "multicast data transmission unit” has the “different frequency measurement timing calculation 'management unit” teach the different frequency measurement timing of the multicast gnole,
- the multicast data is transmitted using a TTI that does not overlap with the different frequency measurement timing of the multicast group.
- step 1 when data addressed to a certain UE or multicast group occurs (step 1), the UE or multicast group performs different frequency measurement at the next TTI.
- the base station determines whether or not to proceed (step 2). If so, the flow proceeds to step 3 and waits for 1 TTI before returning to step 2. If no different frequency measurement is performed, the data becomes a candidate for transmission at the next TTI (step 4), and one of the candidates to be transmitted is selected (step 5). It is determined whether data has been selected for transmission. If not, the flow waits for 1 TTI (step 3) and returns to step 2. If the data was selected for transmission, it is transmitted in step 7.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06757358.4A EP1892855A4 (en) | 2005-06-17 | 2006-06-15 | BASE STATION AND METHOD USED |
BRPI0612616-2A BRPI0612616A2 (pt) | 2005-06-17 | 2006-06-15 | estação de base e método para a sua utilização |
US11/917,874 US8189528B2 (en) | 2005-06-17 | 2006-06-15 | Base station and method for use therein |
CN200680024150XA CN101248595B (zh) | 2005-06-17 | 2006-06-15 | 基站和在基站中使用的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-178543 | 2005-06-17 | ||
JP2005178543A JP4651463B2 (ja) | 2005-06-17 | 2005-06-17 | 基地局及び基地局で使用される方法 |
Publications (1)
Publication Number | Publication Date |
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WO2006135020A1 true WO2006135020A1 (ja) | 2006-12-21 |
Family
ID=37532374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/312060 WO2006135020A1 (ja) | 2005-06-17 | 2006-06-15 | 基地局及び基地局で使用される方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8189528B2 (ja) |
EP (1) | EP1892855A4 (ja) |
JP (1) | JP4651463B2 (ja) |
KR (1) | KR101207866B1 (ja) |
CN (1) | CN101248595B (ja) |
BR (1) | BRPI0612616A2 (ja) |
RU (1) | RU2403679C2 (ja) |
TW (1) | TW200711492A (ja) |
WO (1) | WO2006135020A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101959229A (zh) * | 2009-07-20 | 2011-01-26 | 大唐移动通信设备有限公司 | 一种同频列表与异频列表的处理方法及设备 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5210245B2 (ja) * | 2009-05-28 | 2013-06-12 | アラクサラネットワークス株式会社 | ネットワーク中継装置およびネットワーク間中継方法 |
WO2011142710A1 (en) | 2010-05-10 | 2011-11-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for supporting inter-frequency measurements |
JP5291135B2 (ja) * | 2011-03-11 | 2013-09-18 | シャープ株式会社 | 無線通信システム、基地局装置、移動局装置、無線通信方法及び集積回路 |
TWI461038B (zh) * | 2012-02-23 | 2014-11-11 | Inst Information Industry | 用於一無線網路通訊系統之基地台、核心伺服器及上行傳輸方法 |
US20130223428A1 (en) * | 2012-02-28 | 2013-08-29 | Qualcomm Incorporated | Method and apparatus for irat measurement when in td-scdma connected mode |
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JPH1155227A (ja) * | 1997-08-07 | 1999-02-26 | Nippon Telegr & Teleph Corp <Ntt> | 無線通信装置及び無線通信方法 |
JP2004229117A (ja) * | 2003-01-24 | 2004-08-12 | Ntt Docomo Inc | 通信システム、マルチキャスト交換装置、通信方法 |
JP2004343356A (ja) * | 2003-05-14 | 2004-12-02 | Fujitsu Ltd | 異周波測定機能を有する移動通信端末 |
Family Cites Families (10)
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US6590928B1 (en) * | 1997-09-17 | 2003-07-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Frequency hopping piconets in an uncoordinated wireless multi-user system |
KR100905613B1 (ko) * | 2002-06-03 | 2009-07-02 | 삼성전자주식회사 | 이동통신시스템에서 패킷 데이터의 멀티캐스트 송수신 방법 및 장치 |
DE10229056B4 (de) * | 2002-06-28 | 2004-06-09 | Siemens Ag | Verfahren zur Übertragung mindestens einer Gruppennachricht, zugehörige Netzwerkkontrolleinheit sowie Funkkommunikationsgerät |
JP4133156B2 (ja) * | 2002-09-19 | 2008-08-13 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システム、移動局及び無線制御装置 |
JP2004320481A (ja) * | 2003-04-16 | 2004-11-11 | Matsushita Electric Ind Co Ltd | 通信端末装置、基地局装置、マルチキャスト通信システム及びその方法 |
DE60303837T2 (de) * | 2003-05-12 | 2006-08-17 | Matsushita Electric Industrial Co., Ltd., Kadoma | Verfahren und Vorrichtung zur Übertragung von Schichten für skalierbare Datendienste |
CA2534277C (en) * | 2003-08-22 | 2012-10-02 | Samsung Electronics Co., Ltd. | Cell reselection method for receiving packet data in a mobile communication system supporting mbms |
US7817534B2 (en) * | 2003-11-10 | 2010-10-19 | Motorola, Inc. | Method and apparatus for interrupting a transmission of a multicast signal |
US20050135317A1 (en) * | 2003-12-22 | 2005-06-23 | Christopher Ware | Method and system for multicast scheduling in a WLAN |
JP4480461B2 (ja) * | 2004-05-20 | 2010-06-16 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システム及び無線制御装置 |
-
2005
- 2005-06-17 JP JP2005178543A patent/JP4651463B2/ja not_active Expired - Fee Related
-
2006
- 2006-06-15 KR KR1020087000803A patent/KR101207866B1/ko active Active
- 2006-06-15 CN CN200680024150XA patent/CN101248595B/zh not_active Expired - Fee Related
- 2006-06-15 EP EP06757358.4A patent/EP1892855A4/en not_active Withdrawn
- 2006-06-15 BR BRPI0612616-2A patent/BRPI0612616A2/pt not_active IP Right Cessation
- 2006-06-15 RU RU2008100771/09A patent/RU2403679C2/ru not_active IP Right Cessation
- 2006-06-15 US US11/917,874 patent/US8189528B2/en not_active Expired - Fee Related
- 2006-06-15 WO PCT/JP2006/312060 patent/WO2006135020A1/ja active Application Filing
- 2006-06-16 TW TW095121618A patent/TW200711492A/zh unknown
Patent Citations (3)
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JPH1155227A (ja) * | 1997-08-07 | 1999-02-26 | Nippon Telegr & Teleph Corp <Ntt> | 無線通信装置及び無線通信方法 |
JP2004229117A (ja) * | 2003-01-24 | 2004-08-12 | Ntt Docomo Inc | 通信システム、マルチキャスト交換装置、通信方法 |
JP2004343356A (ja) * | 2003-05-14 | 2004-12-02 | Fujitsu Ltd | 異周波測定機能を有する移動通信端末 |
Non-Patent Citations (1)
Title |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101959229A (zh) * | 2009-07-20 | 2011-01-26 | 大唐移动通信设备有限公司 | 一种同频列表与异频列表的处理方法及设备 |
Also Published As
Publication number | Publication date |
---|---|
US8189528B2 (en) | 2012-05-29 |
KR20080031274A (ko) | 2008-04-08 |
RU2008100771A (ru) | 2009-07-27 |
KR101207866B1 (ko) | 2012-12-05 |
CN101248595A (zh) | 2008-08-20 |
EP1892855A4 (en) | 2013-08-07 |
EP1892855A1 (en) | 2008-02-27 |
RU2403679C2 (ru) | 2010-11-10 |
JP2006352709A (ja) | 2006-12-28 |
TWI314021B (ja) | 2009-08-21 |
BRPI0612616A2 (pt) | 2010-11-23 |
US20090296620A1 (en) | 2009-12-03 |
JP4651463B2 (ja) | 2011-03-16 |
TW200711492A (en) | 2007-03-16 |
CN101248595B (zh) | 2011-08-17 |
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