WO2010150776A1 - 移動通信方法、無線基地局及びリレーノード - Google Patents
移動通信方法、無線基地局及びリレーノード Download PDFInfo
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- WO2010150776A1 WO2010150776A1 PCT/JP2010/060549 JP2010060549W WO2010150776A1 WO 2010150776 A1 WO2010150776 A1 WO 2010150776A1 JP 2010060549 W JP2010060549 W JP 2010060549W WO 2010150776 A1 WO2010150776 A1 WO 2010150776A1
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- relay node
- base station
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- mobile communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2603—Arrangements for wireless physical layer control
- H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/22—Manipulation of transport tunnels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
Definitions
- the present invention relates to a mobile communication method, a radio base station, and a relay node.
- LTE-Advanced mobile communication system which is a successor of LTE (Long Term Evolution)
- a function similar to that of the radio base station DeNB is provided between the mobile station UE and the radio base station DeNB (Donor eNB). It can be connected to a “Relay Node RN”.
- an E-RAB E-UTRAN Radio Access Bearer
- the core node CN Core Node
- the mobile station UE and the relay node RN are connected.
- the Un radio bearer is set, and the S1 bearer is set between the radio base station DeNB and the core node CN. It is configured.
- An object of the present invention is to provide a mobile communication method, a radio base station, and a relay node that can be used.
- a first feature of the present invention is a mobile communication method, wherein when a radio base station detects a predetermined trigger, the configuration of a connection set between the radio base station and a relay node is changed.
- the gist of the invention is that the relay node has a process C for performing scheduling so as to transmit a downlink signal at a timing other than the predetermined timing.
- a second feature of the present invention is a radio base station, and when a predetermined trigger is detected, a signal for changing the configuration of a connection set with the relay node is used for the relay node. And a notification unit configured to notify a predetermined timing and a scheduling unit configured to perform scheduling so as to transmit a downlink signal to the relay node at the predetermined timing. Is the gist.
- a third feature of the present invention is a relay node, which receives a signal for changing a configuration of a connection set between the radio base station and the relay node from the radio base station,
- a gazette comprising: an acquisition unit configured to acquire a predetermined timing from a signal; and a scheduling unit configured to perform scheduling so as to transmit a downlink signal at a timing other than the predetermined timing.
- mobile communication capable of reducing the interference to the receiver of the relay node itself caused by simultaneous transmission / reception processing in the Un radio bearer and transmission / reception processing in the Uu radio bearer.
- a method, a radio base station, and a relay node can be provided.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 2 is a functional block diagram of the radio base station according to the first embodiment of the present invention.
- FIG. 3 is a diagram illustrating an example of a format of “RRC Connection Reconfiguration” in the mobile communication system according to the first embodiment of the present invention.
- FIG. 4 is a diagram for explaining an example of a method for notifying a subframe pattern in the mobile communication system according to the first embodiment of the present invention.
- FIG. 5 is a functional block diagram of the relay node according to the first embodiment of the present invention.
- FIG. 6 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
- FIG. 7 is a sequence diagram showing an operation of the mobile communication system according to the first modification of the first embodiment of the present invention.
- the mobile communication system is an LTE-Advanced mobile communication system, and includes core nodes (for example, a gateway device S-GW and an exchange MME) in a core network node. , Radio base station DeNB, relay node RN and the like.
- core nodes for example, a gateway device S-GW and an exchange MME
- Radio base station DeNB Radio base station DeNB
- relay node RN relay node RN and the like.
- a Uu radio bearer is set between the radio base station DeNB and the mobile station UE, and an Un radio bearer is set between the radio base station DeNB and the relay node RN.
- the Uu radio bearer is set between the relay node RN and the mobile station UE.
- the relay node RN is configured to synchronize with the radio base station DeNB at the SFN level based on the SFN included in the broadcast information transmitted by the radio base station DeNB.
- the radio base station DeNB when the SFN synchronization is not established between the radio base station DeNB and the relay node RN, the radio base station DeNB has the SFN of the radio frame transmitted by the self-confidence and the SFN of the radio frame transmitted by the relay node RN. It is configured to grasp how many frames are shifted at the same time (SFN shift between the relay node RN and the second radio base station S-DeNB).
- the radio base station DeNB and the relay node RN are configured to transmit an uplink signal and a downlink signal by a time division multiplexing method.
- the radio base station DeNB includes a reception unit 11, a transmission unit 12, a scheduling unit 13, and a determination unit 14.
- the receiving unit 11 receives an uplink signal transmitted from the relay node RN via the Un radio bearer, an uplink signal transmitted from the mobile station UE via the Uu radio bearer, and a downlink signal transmitted from the core node CN. It is configured as follows.
- the transmission unit 12 transmits a downlink signal to the relay node RN via the Un radio bearer, transmits a downlink signal to the mobile station UE via the Uu radio bearer, and transmits an uplink signal to the core node CN. Is configured to do.
- the transmission unit 12 is configured to notify the transmission timing of the MBSFN (Multicast Broadcast Single Frequency Network) subframe to the relay node RN by “RRC Connection Reconfiguration” when a predetermined trigger is detected. Also good.
- MBSFN Multicast Broadcast Single Frequency Network
- the transmission unit 12 transmits “MBSFN subframe allocation pattern” indicating the transmission timing of the MBSFN subframe to “critical ExtensionsFuture” (X) in the information element “criticalExtensions” in “RRC Connection Reconfiguration”. (See FIG. 4) ”may be set.
- the MBSFN subframe is a subframe used in MBSFN communication.
- the MBSFN subframe also includes an MBSFN subframe that is defined so as not to transmit a control signal OFDM symbol called a “Blank subframe” in a 3GPP meeting.
- RRC Connection Reconfiguration is a signal for changing the configuration of the RRC connection between the radio base station DeNB and the relay node RN.
- the transmission unit 12 may be configured to determine that a predetermined trigger has been detected when an RRC connection change condition preset in the radio base station DeNB is satisfied.
- the determining unit 14 is configured to determine the transmission timing of the MBSFN subframe to be notified to the relay node RN.
- the determination unit 14 determines the transmission timing of the MBSFN subframe to be notified to the relay node RN in consideration of the number of relay nodes RN and mobile stations UE under the radio base station DeNB and the amount of traffic. It is configured.
- the scheduling unit 13 is configured to perform scheduling related to the relay node RN and the mobile station UE under the radio base station DeNB.
- the scheduling unit 13 is configured to perform scheduling so as to transmit a downlink signal to the relay node RN at the transmission timing of the MBSFN subframe.
- the relay node RN includes a reception unit 21, a scheduling unit 22, and a transmission unit 23.
- the receiving unit 21 is configured to receive a downlink signal transmitted from the radio base station DeNB via the Un radio bearer and an uplink signal transmitted from the mobile station UE via the Uu radio bearer.
- the receiving unit 21 may be configured to acquire the transmission timing of the MBSFN subframe from “RRC Connection Reconfiguration” received by the receiving unit 21.
- the scheduling unit 22 is configured to perform scheduling related to the mobile station UE under the relay node RN.
- the scheduling unit 22 is configured to perform scheduling so as to transmit a downlink signal at a timing other than the transmission timing of the MBSFN subframe.
- the scheduling unit 22 changes the transmission timing of the MBSFN subframe used for scheduling from that used until now to that notified by “RRC Connection Reconfiguration”.
- the transmission unit 23 is configured to transmit an uplink signal to the radio base station DeNB via the Un radio bearer and to transmit a downlink signal to the mobile station UE via the Uu radio bearer.
- step S1002 when the radio base station DeNB detects a predetermined trigger in step S1001, in step S1002, the radio base station DeNB changes “RRC” for changing the configuration of the RRC connection that has already been set for the relay node RN. Send "Connection Reconfiguration".
- the radio base station DeNB notifies the relay node RN of the transmission timing of the new MBSFN subframe by “RRC Connection Reconfiguration”.
- the relay node RN transmits “RRC Connection Reconfiguration Complete” to the radio base station DeNB in step S1003.
- the relay node RN schedules the downlink signal at a timing other than the transmission timing of the new MBSFN subframe notified in step S1002.
- the resources in the relay node RN are controlled in consideration of the number of relay nodes RN and mobile stations UE subordinate to the radio base station DeNB and the traffic volume. Can do.
- Modification 1 With reference to FIG. 7, a mobile communication system according to Modification 1 of the first embodiment of the present invention will be described. Hereinafter, the mobile communication system according to the first modification will be described by focusing on differences from the above-described mobile communication system according to the first embodiment of the present invention.
- the transmission unit 12 of the radio base station DeNB transmits the MBSFN subframe transmission timing to the relay node RN by “Un RN Reconfiguration” instead of “RRC Connection Reconfiguration”. May be configured to notify.
- Un RN Reconfiguration is a signal used in a procedure newly defined between the radio base station DeNB and the relay node RN.
- reception unit 21 of the relay node RN may be configured to acquire the transmission timing of the MBSFN subframe from the “Un RN Reconfiguration” described above.
- step S2002 the radio base station DeNB sets “Un” for changing the configuration of the RRC connection that is already set for the relay node RN.
- RN Reconfiguration is transmitted.
- the radio base station DeNB notifies the relay node RN of the transmission timing of a new MBSFN subframe by “Un RN Reconfiguration”.
- step S2003 the relay node RN transmits “Un RN Reconfiguration Complete” to the radio base station DeNB.
- the relay node RN performs downlink signal scheduling at a timing other than the transmission timing of the new MBSFN subframe notified in step S2002.
- the first feature of the present embodiment is a mobile communication method, and when the radio base station DeNB detects a predetermined trigger, an RRC connection (set between the radio base station DeNB and the relay node RN) ( A process A for notifying the relay node RN of the transmission timing (predetermined timing) of the MBSFN subframe by a signal for changing the configuration of the connection), and the radio base station DeNB relays at the transmission timing of the MBSFN subframe A process B for performing scheduling so as to transmit a downlink signal to the node RN; and a process C for performing scheduling so that the relay node RN transmits a downlink signal at a timing other than the transmission timing of the MBSFN subframe. Is the gist.
- the second feature of the present embodiment is the radio base station DeNB, and when a predetermined trigger is detected, a relay is generated by a signal for changing the configuration of the RRC connection set with the relay node RN.
- the transmission unit 12 configured to notify the transmission timing of the MBSFN subframe to the node RN and scheduling so as to transmit a downlink signal to the relay node RN at the transmission timing of the MBSFN subframe.
- a scheduling unit 13 configured as described above.
- a third feature of the present embodiment is a relay node RN, which receives a signal from the radio base station DeNB for changing the configuration of the RRC connection set between the radio base station DeNB and the relay node RN.
- the reception unit 21 configured to receive and receive the transmission timing of the MBSFN subframe from such a signal, and to perform scheduling so as to transmit the downlink signal at a timing other than the transmission timing of the MBSFN subframe.
- the gist of the invention is that the scheduling unit 22 is provided.
- the signal may be “RRC Connection Reconfiguration” or “Un RN Reconfiguration”.
- the operations of the radio base station DeNB, the relay node RN, the core node CN, and the mobile station UE described above may be implemented by hardware, may be implemented by a software module executed by a processor, It may be implemented by a combination.
- Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in an arbitrary format storage medium such as a CD-ROM.
- the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base station DeNB, the relay node RN, the core node CN, or the mobile station UE. Further, the storage medium and the processor may be provided in the radio base station DeNB, the relay node RN, the core node CN, and the mobile station UE as discrete components.
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
図1乃至図5を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図6を参照して、本発明の第1の実施形態に係る移動通信システムの動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、無線基地局DeNB配下のリレーノードRNや移動局UEの数や、トラフィック量を考慮して、リレーノードRNにおけるリソースを制御することができる。
図7を参照して、本発明の第1の実施形態の変更例1に係る移動通信システムについて説明する。以下、本変更例1に係る移動通信システムについて、上述の本発明の第1の実施形態に係る移動通信システムとの相違点に着目して説明する。
Claims (9)
- 無線基地局が、所定トリガを検出した場合に、該無線基地局とリレーノードとの間で設定されているコネクションの構成を変更するための信号によって、該リレーノードに対して、所定タイミングを通知する工程Aと、
前記無線基地局が、前記所定タイミングで前記リレーノードに対して下り信号を送信するようにスケジューリングを行う工程Bと、
前記リレーノードが、前記所定タイミング以外のタイミングで下り信号を送信するようにスケジューリングを行う工程Cとを有することを特徴とする移動通信方法。 - 前記コネクションは、RRCコネクションであり、
前記信号は、「RRC Connection Reconfiguration」であることを特徴とする請求項1に記載の移動通信方法。 - 前記所定タイミングは、MBSFNサブフレームの送信タイミングであることを特徴とする請求項1又は2に記載の移動通信方法。
- 無線基地局であって、
所定トリガを検出した場合に、リレーノードとの間で設定されているコネクションの構成を変更するための信号によって、該リレーノードに対して、所定タイミングを通知するように構成されている通知部と、
前記所定タイミングで前記リレーノードに対して下り信号を送信するようにスケジューリングを行うように構成されているスケジューリング部とを具備することを特徴とする無線基地局。 - 前記コネクションは、RRCコネクションであり、
前記信号は、「RRC Connection Reconfiguration」であることを特徴とする請求項4に記載の無線基地局。 - 前記所定タイミングは、MBSFNサブフレームの送信タイミングであることを特徴とする請求項4又は5に記載の無線基地局。
- リレーノードであって、
無線基地局から、該無線基地局と前記リレーノードとの間で設定されているコネクションの構成を変更するための信号を受信し、該信号から、所定タイミングを取得するように構成されている取得部と、
前記所定タイミング以外のタイミングで下り信号を送信するようにスケジューリングを行うように構成されているスケジューリング部とを具備することを特徴とするリレーノード。 - 前記コネクションは、RRCコネクションであり、
前記信号は、「RRC Connection Reconfiguration」であることを特徴とする請求項7に記載のリレーノード。 - 前記所定タイミングは、MBSFNサブフレームの送信タイミングであることを特徴とする請求項7又は8に記載のリレーノード。
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2012000154A MX2012000154A (es) | 2009-06-22 | 2010-06-22 | Metodo de comunicacion movil, estacion de base de radio, y nodo de rele. |
| KR1020117031169A KR101365651B1 (ko) | 2009-06-22 | 2010-06-22 | 이동통신방법, 무선기지국 및 릴레이 노드 |
| CN201080027954.1A CN102804837B (zh) | 2009-06-22 | 2010-06-22 | 移动通信方法、无线基站以及中继节点 |
| AU2010263667A AU2010263667B2 (en) | 2009-06-22 | 2010-06-22 | Mobile communication method, wireless base station, and relay node |
| US13/379,744 US9184831B2 (en) | 2009-06-22 | 2010-06-22 | Mobile communication method, radio base station, and relay node |
| RU2012100384/07A RU2501184C2 (ru) | 2009-06-22 | 2010-06-22 | Способ мобильной связи, базовая радиостанция и ретрансляционный узел |
| EP10792094.4A EP2448311A4 (en) | 2009-06-22 | 2010-06-22 | MOBILE COMMUNICATION PROCESS, WIRELESS BASE STATION AND RELAY NODES THEREFOR |
| ZA2012/00056A ZA201200056B (en) | 2009-06-22 | 2012-01-04 | Mobile communication method, radio base station, and relay node |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-148134 | 2009-06-22 | ||
| JP2009148134A JP4749480B2 (ja) | 2009-06-22 | 2009-06-22 | 移動通信方法、無線基地局及びリレーノード |
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| Publication Number | Publication Date |
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| WO2010150776A1 true WO2010150776A1 (ja) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2010/060549 Ceased WO2010150776A1 (ja) | 2009-06-22 | 2010-06-22 | 移動通信方法、無線基地局及びリレーノード |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US9184831B2 (ja) |
| EP (1) | EP2448311A4 (ja) |
| JP (1) | JP4749480B2 (ja) |
| KR (1) | KR101365651B1 (ja) |
| CN (1) | CN102804837B (ja) |
| AU (1) | AU2010263667B2 (ja) |
| MX (1) | MX2012000154A (ja) |
| RU (1) | RU2501184C2 (ja) |
| WO (1) | WO2010150776A1 (ja) |
| ZA (1) | ZA201200056B (ja) |
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| JP5187909B2 (ja) * | 2009-10-05 | 2013-04-24 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信方法及びリレーノード |
| US9509417B2 (en) * | 2011-10-13 | 2016-11-29 | Lg Electronics Inc. | Method in which a terminal transceives a signal in a wireless communication system and apparatus for same |
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- 2010-06-22 US US13/379,744 patent/US9184831B2/en active Active
- 2010-06-22 CN CN201080027954.1A patent/CN102804837B/zh active Active
- 2010-06-22 KR KR1020117031169A patent/KR101365651B1/ko active Active
- 2010-06-22 AU AU2010263667A patent/AU2010263667B2/en active Active
- 2010-06-22 RU RU2012100384/07A patent/RU2501184C2/ru active
- 2010-06-22 EP EP10792094.4A patent/EP2448311A4/en not_active Withdrawn
- 2010-06-22 MX MX2012000154A patent/MX2012000154A/es active IP Right Grant
- 2010-06-22 WO PCT/JP2010/060549 patent/WO2010150776A1/ja not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114557071A (zh) * | 2019-10-11 | 2022-05-27 | 株式会社Ntt都科摩 | 终端和通信方法 |
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| Publication number | Publication date |
|---|---|
| EP2448311A1 (en) | 2012-05-02 |
| MX2012000154A (es) | 2012-02-01 |
| JP2011004372A (ja) | 2011-01-06 |
| US20120147809A1 (en) | 2012-06-14 |
| CN102804837A (zh) | 2012-11-28 |
| EP2448311A4 (en) | 2014-07-02 |
| RU2501184C2 (ru) | 2013-12-10 |
| RU2012100384A (ru) | 2013-07-27 |
| KR20120027403A (ko) | 2012-03-21 |
| JP4749480B2 (ja) | 2011-08-17 |
| CN102804837B (zh) | 2016-05-04 |
| US9184831B2 (en) | 2015-11-10 |
| ZA201200056B (en) | 2013-03-27 |
| KR101365651B1 (ko) | 2014-02-19 |
| AU2010263667A1 (en) | 2012-02-09 |
| AU2010263667B2 (en) | 2013-09-26 |
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