WO2011126013A1 - Mobile communication method - Google Patents
Mobile communication method Download PDFInfo
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- WO2011126013A1 WO2011126013A1 PCT/JP2011/058621 JP2011058621W WO2011126013A1 WO 2011126013 A1 WO2011126013 A1 WO 2011126013A1 JP 2011058621 W JP2011058621 W JP 2011058621W WO 2011126013 A1 WO2011126013 A1 WO 2011126013A1
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- relay node
- base station
- radio base
- mobile communication
- shift amount
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- 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
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- 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.
- MIB Master Information Block
- RB Resource Block
- 3GPP TS 36.211 “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation”, March 2010
- 3GPP TS 36.300 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Network Network (E-UTRAN 12 months; E-UTRAN 12 months)
- 3GPP TR36.912 “Feasibility study for Further Advancements for E-UTRA (LTE-Advanced)”, March 2010
- the relay node RN when the relay node RN is set under the radio base station DeNB, as illustrated in FIG. 6, the relay node RN transmits the radio base station in the subframe sf # 0. There is a problem that the MIB transmitted by the DeNB needs to be received, and the MIB cannot be transmitted to the subordinate cell.
- the relay node RN cannot avoid this problem by scheduling in the frequency direction.
- an object of the present invention is to provide a mobile communication method capable of avoiding the simultaneous transmission / reception of MIB in a relay node.
- a first feature of the present invention is a mobile communication method, in which a radio base station notifies a relay node of a subframe shift amount, and the relay node has a subframe shift amount, And a step B of shifting the transmission frame timing of the relay node from the transmission frame timing of the radio base station.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 3 is a functional block diagram of a radio base station according to the first embodiment of the present invention. It is a figure for demonstrating operation
- FIG. 3 is a sequence diagram showing an operation of the mobile communication system according to the first embodiment of the present invention. It is a sequence diagram which shows operation
- Mobile communication system according to the first embodiment of the present invention A mobile communication system according to a first embodiment of the present invention will be described with reference to FIGS.
- the mobile communication system includes a subscriber information server HSS (Home Subscriber Server), an operation and maintenance server OAM (Operation And Maintenance), an exchange MME (Mobility Management Entity), A radio base station DeNB and a relay node RN are provided.
- HSS Home Subscriber Server
- OAM Opera and maintenance server
- MME Mobility Management Entity
- a radio base station DeNB and a relay node RN are provided.
- the radio base station DeNB includes a broadcast information transmission unit 11 and a subframe shift amount notification unit 12.
- the broadcast information transmitting unit 12 is configured to transmit broadcast information, for example, MIB or SIB (System Information Block) to subordinate cells.
- broadcast information for example, MIB or SIB (System Information Block)
- the broadcast information transmission unit 12 is configured to transmit the MIB to the subordinate cells using the 6 resource blocks in the center in the system frequency band in the subframe sf # 0.
- the subframe shift amount notification unit 12 is configured to notify the relay node RN of the subframe shift amount.
- the subframe shift amount notifying unit 12 performs subframe shift on the relay node RN in the procedure when starting the relay node RN, that is, when establishing the S1 / X2 interface with the relay node RN. Configured to notify the amount.
- the subframe shift amount is information indicating the amount by which the transmission frame timing of the relay node RN should be shifted from the transmission frame timing of the radio base station DeNB by the number of subframes.
- the relay node RN determines the relay node from the transmission frame timing of the radio base station DeNB by one subframe. Since both the relay node RN and the radio base station DeNB transmit the MIB in the subframe sf # 0 in order to shift the transmission frame timing of the RN, simultaneous transmission / reception of the MIB in the relay node RN occurs. There is no.
- step S1001 the relay node RN performs a cell search process and a cell selection process at the time of activation, and selects a radio base station DeNB.
- step S1002 the relay node RN transmits “RA Preamble” to the radio base station DeNB, and the radio base station DeNB transmits “RA Response” to the relay node RN.
- step S1003 the relay node RN transmits “RRC Connection Request” to the radio base station DeNB.
- step S1004 the radio base station DeNB transmits “RRC Connection Setup” to the relay node RN. To do.
- step S1005 the relay node RN transmits “RRC Connection Setup Complete” including “Attach Request” to the radio base station DeNB.
- step S1006 the radio base station DeNB transmits “INITIAL UE MESSAGE” to the exchange MME.
- step S1007 an “Authentication & Security” process is performed among the relay node RN, the radio base station DeNB, the exchange MME, and the subscriber information server HSS.
- step S1008 the switching center MME transmits “INITIAL CONTEXT SETUP REQUEST” including “Attach Accept” to the radio base station DeNB.
- step S1009 the radio base station DeNB transmits “UE Capability Enquiry” to the relay node RN, and in step S1010, the relay node RN transmits “UE Capability Information” to the radio base station DeNB. To do.
- step S1011 the radio base station DeNB transmits “UE Capability Info Indication” to the switching center MME, and in step S1012, transmits “Security Mode Command” to the relay node RN.
- step S1013 the radio base station DeNB transmits “RRC Connection Reconfiguration” to the relay node RN.
- the radio base station DeNB notifies the relay node RN of the above-described subframe shift amount by “RRC Connection Reconfiguration”.
- the relay node RN transmits “Security Mode Complete” to the radio base station DeNB in step S1014, and transmits “RRC Connection Reconfiguration Complete” including “Attach Complete” in step S1015.
- step S1016 the radio base station DeNB transmits “INITIAL CONTENT SETUP RESPONSE” including “Attach Complete” to the exchange MME.
- step S1017 the relay node RN downloads “Node configuration” from the operation and maintenance server OAM.
- step S1018 the S1 / X2 interface is established between the relay node RN and the radio base station DeNB, and in step S1019, “S1 / X2 eNB configuration update” is established between the radio base station DeNB and the switching center MME. Procedure is performed.
- the relay node RN shifts the transmission frame timing of the relay node RN from the transmission frame timing of the radio base station DeNB by the amount of subframe shift received from the radio base station DeNB. Therefore, it is possible to avoid the simultaneous transmission / reception of MIB in the relay node RN.
- Mobile communication system according to the second embodiment of the present invention With reference to FIG. 5, the structure of the mobile communication system which concerns on the 2nd Embodiment of this invention is demonstrated.
- the mobile communication system according to the present embodiment will be described by focusing on differences from the mobile communication system according to the first embodiment described above.
- step S2013 the radio base station DeNB does not notify the relay node RN of the above-described subframe shift amount by “RRC Connection Reconfiguration”.
- the radio base station DeNB After the S1 / X2 interface is established between the relay node RN and the radio base station DeNB, the radio base station DeNB notifies the relay node RN of the subframe shift amount in step S1020. Send “RRC Connection Reconfiguration”.
- step S2021 the relay node RN transmits “RRC Connection Reconfiguration Complete” to the radio base station DeNB.
- the first feature of the present embodiment is that the radio base station DeNB notifies the relay node RN of the subframe shift amount A, and the relay node RN has a subframe shift amount (for example, subframe 1). And the step B of shifting the transmission frame timing of the relay node RN from the transmission frame timing of the radio base station DeNB.
- the radio base station DeNB may notify the subframe shift amount in the procedure when starting the relay node RN.
- the radio base station DeNB may notify the subframe shift amount after establishing the S1 / X2 interface with the relay node RN.
- the operations of the mobile station UE, the radio base station DeNB, the relay node RN, the switching center MME, the subscriber information server HSS, and the operation and maintenance server OAM described above may be implemented by hardware or executed by a processor. It may be implemented by a software module or a combination of both.
- 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 a storage medium of an arbitrary format such as a CD-ROM.
- Such a 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 mobile station UE, the radio base station DeNB, the exchange MME, the relay node RN, the subscriber information server HSS, and the operation and maintenance server OAM. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE, the radio base station DeNB, the exchange MME, the relay node RN, the subscriber information server HSS, and the operation and maintenance server OAM.
- UE ... mobile station RN ... relay node DeNB ... radio base station HSS ... subscriber information server OAM ... operation maintenance server 11 ... notification information transmission unit 12 ... subframe shift amount notification unit
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Abstract
A mobile communication method comprises: a step (A) in which a radio base station (DeNB) notifies a relay node (RN) of a subframe shift amount; and a step (B) in which the relay node (RN) shifts the transmission frame timing of the relay node (RN) by the notified subframe shift amount (for example, one subframe) from the transmission frame timing of the radio base station (DeNB).
Description
本発明は、移動通信方法に関する。
The present invention relates to a mobile communication method.
ＬＴＥ（Ｌｏｎｇ Ｔｅｒｍ Ｅｖｏｌｕｔｉｏｎ）方式及びＬＴＥ-Ａｄｖａｎｃｅｄ方式の移動通信システムでは、報知情報の一種であるＭＩＢ（Ｍａｓｔｅｒ Ｉｎｆｏｒｍａｔｉｏｎ Ｂｌｏｃｋ）は、システム周波数帯域内の中央の６リソースブロック（ＲＢ：Ｒｅｓｏｕｒｃｅ Ｂｌｏｃｋ）によって、サブフレームｓｆ＃０で送信されるように構成されている。
In mobile communication systems of LTE (Long Term Evolution) and LTE-Advanced, MIB (Master Information Block), which is a type of broadcast information, is based on six central resource blocks (RB: Resource Block) in the system frequency band. It is configured to be transmitted in subframe sf # 0.
ここで、ＬＴＥ-Ａｄｖａｎｃｅｄ方式の移動通信システムにおいて、無線基地局ＤｅＮＢ配下にリレーノードＲＮが設定された場合、図６に示すように、リレーノードＲＮは、サブフレームｓｆ＃０において、無線基地局ＤｅＮＢによって送信されたＭＩＢを受信する必要があり、配下のセルに対してＭＩＢを送信することができないという問題点があった。
Here, in the LTE-Advanced mobile communication system, when the relay node RN is set under the radio base station DeNB, as illustrated in FIG. 6, the relay node RN transmits the radio base station in the subframe sf # 0. There is a problem that the MIB transmitted by the DeNB needs to be received, and the MIB cannot be transmitted to the subordinate cell.
なお、ＭＩＢの送信に用いることができるリソースブロックの位置が固定的に決められているため、リレーノードＲＮは、周波数方向のスケジューリングによって、かかる問題点を回避することができない。
Note that since the positions of resource blocks that can be used for MIB transmission are fixedly determined, the relay node RN cannot avoid this problem by scheduling in the frequency direction.
そこで、本発明は、上述の課題に鑑みてなされたものであり、リレーノードにおけるＭＩＢの同時送受信の発生を回避することができる移動通信方法を提供することを目的とする。
Therefore, the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a mobile communication method capable of avoiding the simultaneous transmission / reception of MIB in a relay node.
本発明の第１の特徴は、移動通信方法であって、無線基地局が、リレーノードに対して、サブフレームシフト量を通知する工程Ａと、前記リレーノードが、サブフレームシフト量分だけ、前記無線基地局の送信フレームタイミングから、該リレーノードの送信フレームタイミングをシフトさせる工程Ｂとを有することを要旨とする。
A first feature of the present invention is a mobile communication method, in which a radio base station notifies a relay node of a subframe shift amount, and the relay node has a subframe shift amount, And a step B of shifting the transmission frame timing of the relay node from the transmission frame timing of the radio base station.
以上説明したように、本発明によれば、リレーノードにおけるＭＩＢの同時送受信の発生を回避することができる移動通信方法を提供することができる。
As described above, according to the present invention, it is possible to provide a mobile communication method capable of avoiding the simultaneous transmission / reception of MIB in the relay node.
（本発明の第１の実施形態に係る移動通信システム）
図１乃至図４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について説明する。 (Mobile communication system according to the first embodiment of the present invention)
A mobile communication system according to a first embodiment of the present invention will be described with reference to FIGS.
図１乃至図４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について説明する。 (Mobile communication system according to the first embodiment of the present invention)
A mobile communication system according to a first embodiment of the present invention will be described with reference to FIGS.
図１に示すように、本実施形態に係る移動通信システムは、加入者情報サーバＨＳＳ（Ｈｏｍｅ Ｓｕｂｓｃｒｉｂｅｒ Ｓｅｒｖｅｒ）と、運用保守サーバＯＡＭ（Ｏｐｅｒａｔｉｏｎ Ａｎｄ Ｍａｉｎｔｅｎａｎｃｅ）と、交換局ＭＭＥ（Ｍｏｂｉｌｉｔｙ Ｍａｎａｇｅｍｅｎｔ Ｅｎｔｉｔｙ）と、無線基地局ＤｅＮＢと、リレーノードＲＮを具備している。
As shown in FIG. 1, the mobile communication system according to the present embodiment includes a subscriber information server HSS (Home Subscriber Server), an operation and maintenance server OAM (Operation And Maintenance), an exchange MME (Mobility Management Entity), A radio base station DeNB and a relay node RN are provided.
図２に示すように、無線基地局ＤｅＮＢは、報知情報送信部１１と、サブフレームシフト量通知部１２とを具備している。
As shown in FIG. 2, the radio base station DeNB includes a broadcast information transmission unit 11 and a subframe shift amount notification unit 12.
報知情報送信部１２は、配下のセルに対して、報知情報、例えば、ＭＩＢやＳＩＢ（Ｓｙｓｔｅｍ Ｉｎｆｏｒｍａｔｉｏｎ Ｂｌｏｃｋ）を送信するように構成されている。
The broadcast information transmitting unit 12 is configured to transmit broadcast information, for example, MIB or SIB (System Information Block) to subordinate cells.
具体的には、報知情報送信部１２は、配下のセルに対して、サブフレームｓｆ＃０でシステム周波数帯域内の中央の６リソースブロックによって、ＭＩＢを送信するように構成されている。
Specifically, the broadcast information transmission unit 12 is configured to transmit the MIB to the subordinate cells using the 6 resource blocks in the center in the system frequency band in the subframe sf # 0.
サブフレームシフト量通知部１２は、リレーノードＲＮに対して、サブフレームシフト量を通知するように構成されている。
The subframe shift amount notification unit 12 is configured to notify the relay node RN of the subframe shift amount.
例えば、サブフレームシフト量通知部１２は、リレーノードＲＮの起動時の手順において、すなわち、リレーノードＲＮとの間のＳ１/Ｘ２インターフェイスを確立する際に、リレーノードＲＮに対して、サブフレームシフト量を通知するように構成されている。
For example, the subframe shift amount notifying unit 12 performs subframe shift on the relay node RN in the procedure when starting the relay node RN, that is, when establishing the S1 / X2 interface with the relay node RN. Configured to notify the amount.
ここで、サブフレームシフト量は、無線基地局ＤｅＮＢの送信フレームタイミングからリレーノードＲＮの送信フレームタイミングをシフトさせるべき量を、サブフレームの数で示す情報である。
Here, the subframe shift amount is information indicating the amount by which the transmission frame timing of the relay node RN should be shifted from the transmission frame timing of the radio base station DeNB by the number of subframes.
例えば、サブフレームシフト量が、「サブフレーム１個分」である場合、図３に示すように、リレーノードＲＮが、サブフレーム１個分だけ、無線基地局ＤｅＮＢの送信フレームタイミングから、リレーノードＲＮの送信フレームタイミングをシフトさせるため、リレーノードＲＮ及び無線基地局ＤｅＮＢの双方が、サブフレームｓｆ＃０でＭＩＢを送信する場合であっても、リレーノードＲＮにおけるＭＩＢの同時送受信が発生することはない。
For example, when the subframe shift amount is “one subframe”, as shown in FIG. 3, the relay node RN determines the relay node from the transmission frame timing of the radio base station DeNB by one subframe. Since both the relay node RN and the radio base station DeNB transmit the MIB in the subframe sf # 0 in order to shift the transmission frame timing of the RN, simultaneous transmission / reception of the MIB in the relay node RN occurs. There is no.
以下、図４を参照して、本実施形態に係る移動通信システムにおいて、無線基地局ＤｅＮＢがリレーノードＲＮに対してサブフレームシフト量を通知する動作について説明する。
Hereinafter, an operation in which the radio base station DeNB notifies the relay node RN of the subframe shift amount in the mobile communication system according to the present embodiment will be described with reference to FIG.
図４に示すように、ステップＳ１００１において、リレーノードＲＮは、起動時に、セルサーチ処理及びセル選択処理を行い、無線基地局ＤｅＮＢを選択する。
As shown in FIG. 4, in step S1001, the relay node RN performs a cell search process and a cell selection process at the time of activation, and selects a radio base station DeNB.
ステップＳ１００２において、リレーノードＲＮは、無線基地局ＤｅＮＢに対して、「ＲＡ Ｐｒｅａｍｂｌｅ」を送信し、無線基地局ＤｅＮＢは、リレーノードＲＮに対して、「ＲＡ Ｒｅｓｐｏｎｓｅ」を送信する。
In step S1002, the relay node RN transmits “RA Preamble” to the radio base station DeNB, and the radio base station DeNB transmits “RA Response” to the relay node RN.
ステップＳ１００３において、リレーノードＲＮは、無線基地局ＤｅＮＢに対して、「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｑｕｅｓｔ」を送信し、ステップＳ１００４において、無線基地局ＤｅＮＢは、リレーノードＲＮに対して、「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｓｅｔｕｐ」を送信する。
In step S1003, the relay node RN transmits “RRC Connection Request” to the radio base station DeNB. In step S1004, the radio base station DeNB transmits “RRC Connection Setup” to the relay node RN. To do.
ステップＳ１００５において、リレーノードＲＮは、無線基地局ＤｅＮＢに対して、「Ａｔｔａｃｈ Ｒｅｑｕｅｓｔ」を含む「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｓｅｔｕｐ Ｃｏｍｐｌｅｔｅ」を送信する。
In step S1005, the relay node RN transmits “RRC Connection Setup Complete” including “Attach Request” to the radio base station DeNB.
ステップＳ１００６において、無線基地局ＤｅＮＢは、交換局ＭＭＥに対して、「ＩＮＩＴＩＡＬ ＵＥ ＭＥＳＳＡＧＥ」を送信する。
In step S1006, the radio base station DeNB transmits “INITIAL UE MESSAGE” to the exchange MME.
ステップＳ１００７において、リレーノードＲＮと無線基地局ＤｅＮＢと交換局ＭＭＥと加入者情報サーバＨＳＳとの間で、「Ａｕｔｈｅｎｔｉｃａｔｉｏｎ ＆ Ｓｅｃｕｒｉｔｙ」処理が行われる。
In step S1007, an “Authentication & Security” process is performed among the relay node RN, the radio base station DeNB, the exchange MME, and the subscriber information server HSS.
ステップＳ１００８において、交換局ＭＭＥが、無線基地局ＤｅＮＢに対して、「Ａｔｔａｃｈ Ａｃｃｅｐｔ」を含む「ＩＮＩＴＩＡＬ ＣＯＮＴＥＸＴ ＳＥＴＵＰ ＲＥＱＵＥＳＴ」を送信する。
In step S1008, the switching center MME transmits “INITIAL CONTEXT SETUP REQUEST” including “Attach Accept” to the radio base station DeNB.
ステップＳ１００９において、無線基地局ＤｅＮＢは、リレーノードＲＮに対して、「ＵＥ Ｃａｐａｂｉｌｉｔｙ Ｅｎｑｕｉｒｙ」を送信し、ステップＳ１０１０において、リレーノードＲＮが、無線基地局ＤｅＮＢに対して、「ＵＥ Ｃａｐａｂｉｌｉｔｙ Ｉｎｆｏｒｍａｔｉｏｎ」を送信する。
In step S1009, the radio base station DeNB transmits “UE Capability Enquiry” to the relay node RN, and in step S1010, the relay node RN transmits “UE Capability Information” to the radio base station DeNB. To do.
無線基地局ＤｅＮＢは、ステップＳ１０１１において、交換局ＭＭＥに対して、「ＵＥ Ｃａｐａｂｉｌｉｔｙ Ｉｎｆｏ Ｉｎｄｉｃａｔｉｏｎ」を送信し、ステップＳ１０１２において、リレーノードＲＮに対して、「Ｓｅｃｕｒｉｔｙ Ｍｏｄｅ Ｃｏｍｍａｎｄ」を送信する。
In step S1011, the radio base station DeNB transmits “UE Capability Info Indication” to the switching center MME, and in step S1012, transmits “Security Mode Command” to the relay node RN.
ステップＳ１０１３において、無線基地局ＤｅＮＢは、リレーノードＲＮに対して、「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」を送信する。
In step S1013, the radio base station DeNB transmits “RRC Connection Reconfiguration” to the relay node RN.
ここで、無線基地局ＤｅＮＢは、リレーノードＲＮに対して、「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、上述のサブフレームシフト量を通知する。
Here, the radio base station DeNB notifies the relay node RN of the above-described subframe shift amount by “RRC Connection Reconfiguration”.
リレーノードＲＮは、無線基地局ＤｅＮＢに対して、ステップＳ１０１４において、「Ｓｅｃｕｒｉｔｙ Ｍｏｄｅ Ｃｏｍｐｌｅｔｅ」を送信し、ステップＳ１０１５において、「Ａｔｔａｃｈ Ｃｏｍｐｌｅｔｅ」を含む「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ Ｃｏｍｐｌｅｔｅ」を送信する。
The relay node RN transmits “Security Mode Complete” to the radio base station DeNB in step S1014, and transmits “RRC Connection Reconfiguration Complete” including “Attach Complete” in step S1015.
ステップＳ１０１６において、無線基地局ＤｅＮＢは、交換局ＭＭＥに対して、「Ａｔｔａｃｈ Ｃｏｍｐｌｅｔｅ」を含む「ＩＮＩＴＩＡＬ ＣＯＮＴＥＸＴ ＳＥＴＵＰ ＲＥＳＰＯＮＳＥ」を送信する。
In step S1016, the radio base station DeNB transmits “INITIAL CONTENT SETUP RESPONSE” including “Attach Complete” to the exchange MME.
ステップＳ１０１７において、リレーノードＲＮは、運用保守サーバＯＡＭから「Ｎｏｄｅ ｃｏｎｆｉｇｕｒａｔｉｏｎ」をダウンロードする。
In step S1017, the relay node RN downloads “Node configuration” from the operation and maintenance server OAM.
ステップＳ１０１８において、リレーノードＲＮと無線基地局ＤｅＮＢとの間で、Ｓ１/Ｘ２インターフェイスが確立され、ステップＳ１０１９において、無線基地局ＤｅＮＢと交換局ＭＭＥとの間で、「Ｓ１／Ｘ２ ｅＮＢ ｃｏｎｆｉｇｕｒａｅｔｉｏｎ ｕｐｄａｔｅ」手順が行われる。
In step S1018, the S1 / X2 interface is established between the relay node RN and the radio base station DeNB, and in step S1019, “S1 / X2 eNB configuration update” is established between the radio base station DeNB and the switching center MME. Procedure is performed.
本実施形態に係る移動通信システムによれば、リレーノードＲＮが、無線基地局ＤｅＮＢから受信したサブフレームシフト量分だけ、無線基地局ＤｅＮＢの送信フレームタイミングからリレーノードＲＮの送信フレームタイミングをシフトさせるように構成されているため、リレーノードＲＮにおけるＭＩＢの同時送受信の発生を回避することができる。
According to the mobile communication system according to the present embodiment, the relay node RN shifts the transmission frame timing of the relay node RN from the transmission frame timing of the radio base station DeNB by the amount of subframe shift received from the radio base station DeNB. Therefore, it is possible to avoid the simultaneous transmission / reception of MIB in the relay node RN.
（本発明の第２の実施形態に係る移動通信システム）
図５を参照して、本発明の第２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。以下、本実施形態に係る移動通信システムについて、上述の第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。 (Mobile communication system according to the second embodiment of the present invention)
With reference to FIG. 5, the structure of the mobile communication system which concerns on the 2nd Embodiment of this invention is demonstrated. Hereinafter, the mobile communication system according to the present embodiment will be described by focusing on differences from the mobile communication system according to the first embodiment described above.
図５を参照して、本発明の第２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。以下、本実施形態に係る移動通信システムについて、上述の第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。 (Mobile communication system according to the second embodiment of the present invention)
With reference to FIG. 5, the structure of the mobile communication system which concerns on the 2nd Embodiment of this invention is demonstrated. Hereinafter, the mobile communication system according to the present embodiment will be described by focusing on differences from the mobile communication system according to the first embodiment described above.
以下、図５を参照して、本実施形態に係る移動通信システムにおいて、無線基地局ＤｅＮＢがリレーノードＲＮに対してサブフレームシフト量を通知する動作について説明する。
Hereinafter, an operation in which the radio base station DeNB notifies the relay node RN of the subframe shift amount in the mobile communication system according to the present embodiment will be described with reference to FIG.
図５に示すように、ステップＳ２００１乃至Ｓ２０１９の動作は、図４に示すステップＳ１００１乃至Ｓ１０１９の動作と同一である。ただし、ステップＳ２０１３において、無線基地局ＤｅＮＢは、リレーノードＲＮに対して、「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」によって、上述のサブフレームシフト量を通知しない。
As shown in FIG. 5, the operations in steps S2001 to S2019 are the same as the operations in steps S1001 to S1019 shown in FIG. However, in step S2013, the radio base station DeNB does not notify the relay node RN of the above-described subframe shift amount by “RRC Connection Reconfiguration”.
その代わりに、無線基地局ＤｅＮＢは、リレーノードＲＮと無線基地局ＤｅＮＢとの間で、Ｓ１/Ｘ２インターフェイスが確立された後、ステップＳ１０２０において、リレーノードＲＮに対して、サブフレームシフト量を通知する「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ」を送信する。
Instead, after the S1 / X2 interface is established between the relay node RN and the radio base station DeNB, the radio base station DeNB notifies the relay node RN of the subframe shift amount in step S1020. Send “RRC Connection Reconfiguration”.
ステップＳ２０２１において、リレーノードＲＮは、無線基地局ＤｅＮＢに対して、「ＲＲＣ Ｃｏｎｎｅｃｔｉｏｎ Ｒｅｃｏｎｆｉｇｕｒａｔｉｏｎ Ｃｏｍｐｌｅｔｅ」を送信する。
In step S2021, the relay node RN transmits “RRC Connection Reconfiguration Complete” to the radio base station DeNB.
以上に述べた実施形態の特徴は、以下のように表現されていてもよい。
The features of the embodiment described above may be expressed as follows.
本実施形態の第１の特徴は、無線基地局ＤｅＮＢが、リレーノードＲＮに対して、サブフレームシフト量を通知する工程Ａと、リレーノードＲＮが、サブフレームシフト量分（例えば、サブフレーム１個分）だけ、無線基地局ＤｅＮＢの送信フレームタイミングから、リレーノードＲＮの送信フレームタイミングをシフトさせる工程Ｂとを有することを要旨とする。
The first feature of the present embodiment is that the radio base station DeNB notifies the relay node RN of the subframe shift amount A, and the relay node RN has a subframe shift amount (for example, subframe 1). And the step B of shifting the transmission frame timing of the relay node RN from the transmission frame timing of the radio base station DeNB.
本実施形態の第１の特徴において、工程Ａにおいて、無線基地局ＤｅＮＢは、リレーノードＲＮの起動時の手順において、かかるサブフレームシフト量を通知してもよい。
In the first feature of the present embodiment, in step A, the radio base station DeNB may notify the subframe shift amount in the procedure when starting the relay node RN.
本実施形態の第１の特徴において、工程Ａにおいて、無線基地局ＤｅＮＢは、リレーノードＲＮとの間のＳ１/Ｘ２インターフェイスを確立した後に、かかるサブフレームシフト量を通知してもよい。
In the first feature of the present embodiment, in step A, the radio base station DeNB may notify the subframe shift amount after establishing the S1 / X2 interface with the relay node RN.
なお、上述の移動局ＵＥや無線基地局ＤｅＮＢやリレーノードＲＮや交換局ＭＭＥや加入者情報サーバＨＳＳや運用保守サーバＯＡＭの動作は、ハードウェアによって実施されてもよいし、プロセッサによって実行されるソフトウェアモジュールによって実施されてもよいし、両者の組み合わせによって実施されてもよい。
The operations of the mobile station UE, the radio base station DeNB, the relay node RN, the switching center MME, the subscriber information server HSS, and the operation and maintenance server OAM described above may be implemented by hardware or executed by a processor. It may be implemented by a software module or a combination of both.
ソフトウェアモジュールは、ＲＡＭ（Ｒａｎｄｏｍ Ａｃｃｅｓｓ Ｍｅｍｏｒｙ）や、フラッシュメモリや、ＲＯＭ（Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）や、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ Ｐｒｏｇｒａｍｍａｂｌｅ ＲＯＭ）や、ＥＥＰＲＯＭ（Ｅｌｅｃｔｒｏｎｉｃａｌｌｙ Ｅｒａｓａｂｌｅ ａｎｄ Ｐｒｏｇｒａｍｍａｂｌｅ ＲＯＭ）や、レジスタや、ハードディスクや、リムーバブルディスクや、ＣＤ-ＲＯＭといった任意形式の記憶媒体内に設けられていてもよい。
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 a storage medium of an arbitrary format such as a CD-ROM.
かかる記憶媒体は、プロセッサが当該記憶媒体に情報を読み書きできるように、当該プロセッサに接続されている。また、かかる記憶媒体は、プロセッサに集積されていてもよい。また、かかる記憶媒体及びプロセッサは、ＡＳＩＣ内に設けられていてもよい。かかるＡＳＩＣは、移動局ＵＥや無線基地局ＤｅＮＢや交換局ＭＭＥやリレーノードＲＮや加入者情報サーバＨＳＳや運用保守サーバＯＡＭ内に設けられていてもよい。また、かかる記憶媒体及びプロセッサは、ディスクリートコンポーネントとして移動局ＵＥや無線基地局ＤｅＮＢや交換局ＭＭＥやリレーノードＲＮや加入者情報サーバＨＳＳや運用保守サーバＯＡＭ内に設けられていてもよい。
Such a 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 mobile station UE, the radio base station DeNB, the exchange MME, the relay node RN, the subscriber information server HSS, and the operation and maintenance server OAM. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE, the radio base station DeNB, the exchange MME, the relay node RN, the subscriber information server HSS, and the operation and maintenance server OAM.
以上、上述の実施形態を用いて本発明について詳細に説明したが、当業者にとっては、本発明が本明細書中に説明した実施形態に限定されるものではないということは明らかである。本発明は、請求の範囲の記載により定まる本発明の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。従って、本明細書の記載は、例示説明を目的とするものであり、本発明に対して何ら制限的な意味を有するものではない。
As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and changes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Accordingly, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.
以上説明したように、本発明によれば、リレーノードにおけるＭＩＢの同時送受信の発生を回避することができる移動通信方法を提供することができる。
As described above, according to the present invention, it is possible to provide a mobile communication method capable of avoiding the simultaneous transmission / reception of MIB in the relay node.
ＵＥ…移動局
ＲＮ…リレーノード
ＤｅＮＢ…無線基地局
ＨＳＳ…加入者情報サーバ
ＯＡＭ…運用保守サーバ
１１…報知情報送信部
１２…サブフレームシフト量通知部 UE ... mobile station RN ... relay node DeNB ... radio base station HSS ... subscriber information server OAM ...operation maintenance server 11 ... notification information transmission unit 12 ... subframe shift amount notification unit
ＲＮ…リレーノード
ＤｅＮＢ…無線基地局
ＨＳＳ…加入者情報サーバ
ＯＡＭ…運用保守サーバ
１１…報知情報送信部
１２…サブフレームシフト量通知部 UE ... mobile station RN ... relay node DeNB ... radio base station HSS ... subscriber information server OAM ...
Claims (3)
- 無線基地局が、リレーノードに対して、サブフレームシフト量を通知する工程Ａと、
前記リレーノードが、サブフレームシフト量分だけ、前記無線基地局の送信フレームタイミングから、該リレーノードの送信フレームタイミングをシフトさせる工程Ｂとを有することを特徴とする移動通信方法。 Step A in which the radio base station notifies the relay node of the subframe shift amount;
The mobile communication method comprising: a step B in which the relay node shifts the transmission frame timing of the relay node from the transmission frame timing of the radio base station by a subframe shift amount. - 前記工程Ａにおいて、前記無線基地局は、前記リレーノードの起動時の手順において、前記サブフレームシフト量を通知することを特徴とする請求項１に記載の移動通信方法。 The mobile communication method according to claim 1, wherein, in the step A, the radio base station notifies the subframe shift amount in a procedure when the relay node is activated.
- 前記工程Ａにおいて、前記無線基地局は、前記リレーノードとの間のインターフェイスを確立した後に、前記サブフレームシフト量を通知することを特徴とする請求項１に記載の移動通信方法。 The mobile communication method according to claim 1, wherein, in the step A, the radio base station notifies the subframe shift amount after establishing an interface with the relay node.
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| JP2010-087406 | 2010-04-05 | ||
| JP2010087406A JP5194046B2 (en) | 2010-04-05 | 2010-04-05 | Mobile communication method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286813A (en) * | 1999-03-31 | 2000-10-13 | Nec Corp | Time divisional multi-direction multiplex communication system, method for controlling the same and recording medium storing its control program |
| WO2008108559A1 (en) * | 2007-03-02 | 2008-09-12 | Samsung Electronics Co., Ltd. | Apparatus and method for negotiating frame offset between base station and relay station in broadband wireless communication system using multi-hop relay scheme |
| JP2008258839A (en) * | 2007-04-03 | 2008-10-23 | Canon Inc | Relay processing method and relay node device |
-
2010
- 2010-04-05 JP JP2010087406A patent/JP5194046B2/en not_active Expired - Fee Related
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286813A (en) * | 1999-03-31 | 2000-10-13 | Nec Corp | Time divisional multi-direction multiplex communication system, method for controlling the same and recording medium storing its control program |
| WO2008108559A1 (en) * | 2007-03-02 | 2008-09-12 | Samsung Electronics Co., Ltd. | Apparatus and method for negotiating frame offset between base station and relay station in broadband wireless communication system using multi-hop relay scheme |
| JP2008258839A (en) * | 2007-04-03 | 2008-10-23 | Canon Inc | Relay processing method and relay node device |
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