WO2010150661A1 - 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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- WO2010150661A1 WO2010150661A1 PCT/JP2010/059862 JP2010059862W WO2010150661A1 WO 2010150661 A1 WO2010150661 A1 WO 2010150661A1 JP 2010059862 W JP2010059862 W JP 2010059862W WO 2010150661 A1 WO2010150661 A1 WO 2010150661A1
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000010295 mobile communication Methods 0.000 title claims abstract description 51
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 87
- JZEPSDIWGBJOEH-UHFFFAOYSA-N 4-decylbicyclo[2.2.1]hept-2-ene Chemical compound C1CC2C=CC1(CCCCCCCCCC)C2 JZEPSDIWGBJOEH-UHFFFAOYSA-N 0.000 abstract description 76
- 238000010586 diagram Methods 0.000 description 13
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 10
- 230000004044 response Effects 0.000 description 7
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- 238000004891 communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
-
- 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 connection is set up between a radio base station and a relay node, the radio base station notifies the relay node of a predetermined timing. Step A in which the radio base station performs scheduling so that a downlink signal is transmitted to the relay node at the predetermined timing, and the relay node transmits a downlink signal at a timing other than the predetermined timing. It has a gist of having a process C for performing scheduling so as to transmit.
- a second feature of the present invention is a mobile communication method, wherein when a connection is set up between a radio base station and a relay node, the relay node notifies the radio base station of a predetermined timing.
- Step A in which the radio base station performs scheduling so that a downlink signal is transmitted to the relay node at the predetermined timing, and the relay node transmits a downlink signal at a timing other than the predetermined timing. It has a gist of having a process C for performing scheduling so as to transmit.
- a third feature of the present invention is a radio base station, which is configured to notify a predetermined timing to a relay node when setting up a connection with the relay node; And a scheduling unit configured to perform scheduling so as to transmit a downlink signal to the relay node at the predetermined timing.
- a fourth feature of the present invention is a radio base station, and when setting up a connection with a relay node, an acquisition unit configured to acquire a predetermined timing from the relay node; And a scheduling unit configured to perform scheduling so as to transmit a downlink signal to the relay node at a predetermined timing.
- a fifth feature of the present invention is a relay node, and when setting up a connection with a radio base station, an acquisition unit configured to acquire a predetermined timing from the radio base station; And a scheduling unit configured to perform scheduling so as to transmit a downlink signal at a timing other than the predetermined timing.
- a sixth feature of the present invention is a relay node that is configured to notify a predetermined timing to a radio base station when setting up a connection with the radio base station. 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 Request” in the mobile communication system according to the first embodiment of the present invention.
- FIG. 4 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. 5 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. 6 is a functional block diagram of the relay node according to the first embodiment of the present invention.
- FIG. 7 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
- FIG. 8 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.
- FIG. 9 is a functional block diagram of a relay node according to the second embodiment of the present invention.
- FIG. 10 is a diagram illustrating an example of a format of “RRC RN (UE) Capability Information” in the mobile communication system according to the second embodiment of the present invention.
- FIG. 11 is a functional block diagram of a radio base station according to the second embodiment of the present invention.
- FIG. 12 is a sequence diagram showing operations of the mobile communication system according to the second embodiment of the present invention.
- FIG. 13 is a sequence diagram showing an operation of the mobile communication system according to the first modification of the second 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 itself 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.
- 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 reception unit 11 is configured to receive “RRC Connection Request” transmitted from the relay node RN in the procedure of setting the RRC connection between the radio base station DeNB and the relay node RN.
- 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 notifies the relay node RN of the transmission timing (predetermined timing) of the MBSFN (Multicast Broadcast Single Frequency Network) subframe. It is configured.
- MBSFN Multicast Broadcast Single Frequency Network
- 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.
- the transmission unit 12 is configured to notify the relay node RN of the transmission timing of the MBSFN subframe when the transmission source of the “RRC Connection Request” received by the reception unit 11 is the relay node RN. It may be.
- FIG. 3 shows an example of the format of the existing “RRC Connection Request”.
- a bit (flag) indicating either “relay node RN” or “mobile station UE” is provided in “spare” (X) in information element “RRCConnectionRequest-r8” in “RRC Connection Request”. It may be.
- a bit (flag) indicating either “relay node RN” or “mobile station UE” is provided in “spare3” (Y) in the information element “EstablishmentCause” in the “RRC Connection Request”. May be.
- the transmission unit 12 indicates that the transmission source of the “RRC Connection Request” received by the reception unit 11 is the relay node RN. It may be configured to determine that
- the transmission unit 12 may be configured to notify the relay node RN of the transmission timing of the MBSFN subframe by “RRC Connection Reconfiguration” transmitted in the existing RRC connection setting procedure.
- the transmission unit 12 sets “MBSFN subframe allocation pattern” indicating the transmission timing of the MBSFN subframe in “criticalExtensionsFature” (Z) in the information element “criticalExtensions” in “RRC Connection Reconfiguration”. (See FIG. 5).
- 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 24.
- the receiving unit 11 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 reception unit 21 is configured to acquire the transmission timing of the MBSFN subframe from the radio base station DeNB when setting the RRC connection with the radio base station DeNB.
- the receiving unit 21 may be configured to acquire the transmission timing of the MBSFN subframe from “RRC Connection Reconfiguration” transmitted in the existing RRC connection setting procedure.
- 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 transmission unit 24 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.
- the transmission unit 24 is configured to transmit “RRC Connection Request” including information indicating that it is transmitted by the relay node RN to the radio base station DeNB in the RRC connection setting procedure.
- step S1001 the relay node RN transmits “RRC Connection Request” to the radio base station DeNB at the time of activation.
- step S1002 the radio base station DeNB determines that the “RRC Connection Request” is transmitted from the relay node RN based on the flag set in the “RRC Connection Request”, and the relay node RN. In response, “RRC Connection Setup” is transmitted.
- step S1003 the relay node RN transmits “RRC Connection Setup Complete” including “Attach Request” to the radio base station DeNB.
- step S1004 the radio base station DeNB transmits “Initial UE Message” including “Attach Request” to the core node CN.
- step S1005 after the “Authentication / Security process” is completed between the relay node RN and the core node CN, in step S1006, the core node CN sends the “Initial Context” including “Attach Accept” to the radio base station DeNB. Send “Setup Request”.
- step S1007 the radio base station DeNB transmits “RRC RN (UE) Capability Enquiry” to the relay node RN.
- step S1008 the relay node RN transmits “RRC RN (UE) Capability Information” to the radio base station DeNB.
- step S1009 the radio base station DeNB transmits “(UE) Capability Info Indication” to the core node CN.
- the radio base station DeNB transmits “Security Mode Command” to the relay node RN in Step S1010, and transmits “RRC Connection Reconfiguration” including “Attach Accept” in Step S1011.
- the radio base station DeNB notifies the relay node RN of the transmission timing of the above MBSFN subframe by “RRC Connection Reconfiguration”.
- the relay node RN transmits “Security Mode Complete” to the radio base station DeNB in step S1012, and transmits “RRC Connection Reconfiguration Complete” in step S1013.
- step S1014 the radio base station DeNB transmits “Initial Context Setup Response” to the core node CN.
- step S1015 the relay node RN transmits “Attach Complete” to the core node CN.
- 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. 8, 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 Setup Response” instead of “RRC Connection Reconfiguration”. May be configured to notify.
- Un Setup Response is not defined in the existing RRC connection setup procedure, but is a signal used in a procedure newly defined between the radio base station DeNB and the relay node RN.
- the receiving unit 21 of the relay node RN may be configured to acquire the transmission timing of the MBSFN subframe from the “Un Setup Response” described above.
- step S2011 the radio base station DeNB does not notify the relay node RN of the transmission timing of the above MBSFN subframe by “RRC Connection Reconfiguration”.
- step S2016 the relay node RN sets, for the radio base station DeNB, an Un radio bearer necessary for the relay node RN to operate as a radio relay base station between the relay node RN and the radio base station DeNB. “Un Setup Request” is transmitted to request this.
- step S2017 the radio base station DeNB transmits “Un Setup Response” to the relay node RN.
- the radio base station DeNB notifies the relay node RN of the transmission timing of the above MBSFN subframe by “Un Setup Response”.
- the first feature of the present embodiment is a mobile communication method, and when the RRC connection (connection) is set between the radio base station DeNB and the relay node RN, the radio base station DeNB is set to the relay node RN.
- the gist is that B and the relay node RN have a process C that performs scheduling so as to transmit a downlink signal at a timing other than the transmission timing of the MBSFN subframe.
- the radio base station DeNB sets the transmission timing of the MBSFN subframe to the relay node RN by “RRC Connection Reconfiguration” transmitted in the RRC connection setting procedure. You may be notified.
- the second feature of the present embodiment is the radio base station DeNB, which notifies the relay node RN of the transmission timing of the MBSFN subframe when setting the RRC connection with the relay node RN.
- a scheduling unit 13 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 receiving unit 11 is configured to receive “RRC Connection Request” transmitted in the RRC connection setting procedure, and the transmitting unit 12 in the RRC connection setting procedure.
- the “RRC Connection Reconfiguration” notifies the relay node RN of the transmission timing of the MBSFN subframe by “RRC Connection Reconfiguration”. It may be configured.
- a third feature of the present embodiment is a relay node RN, which acquires the transmission timing of the MBSFN subframe from the radio base station DeNB when setting up an RRC connection with the radio base station DeNB.
- the gist of the invention is that it includes a receiving unit 21 configured and a scheduling unit 22 configured to perform scheduling so as to transmit a downlink signal at a timing other than the transmission timing of the MBSFN subframe.
- the receiving unit 21 may be configured to acquire the transmission timing of the MBSFN subframe from “RRC Connection Reconfiguration” transmitted in the RRC connection setting procedure.
- a transmission unit 24 configured to transmit “RRC Connection Request” including information indicating that it has been transmitted by the relay node RN in the RRC connection setting procedure is provided. May be.
- Mobile communication system according to the second embodiment of the present invention A mobile communication system according to the second embodiment of the present invention will be described with reference to FIG. 9 to FIG. Hereinafter, the mobile communication system according to the second embodiment of the present invention will be described by focusing on differences from the above-described mobile communication system according to the first embodiment of the present invention.
- the mobile communication system according to the second embodiment of the present invention is configured such that the transmission timing of the above MBSFN subframe is determined by the relay node RN, not the radio base station DeNB.
- the relay node RN includes a reception unit 21, a scheduling unit 22, a determination unit 23, and a transmission unit 24.
- the determining unit 23 is configured to determine the transmission timing of the MBSFN subframe described above.
- the determination unit 23 may use the timing stored in advance as station data in the relay node RN as the transmission timing of the above-described MBSFN subframe, or the timing acquired from an OAM (Operation & Maintenance) server as described above. It may be the transmission timing of the MBSFN subframe.
- OAM Operaation & Maintenance
- the transmission unit 24 is configured to notify the radio base station DeNB of the transmission timing of the MBSFN subframe when setting an RRC connection with the radio base station DeNB.
- the transmission unit 24 notifies the relay node RN of the transmission timing of the MBSFN subframe by “RRC RN (UE) Capability Information” transmitted in the existing RRC connection setting procedure. It may be configured.
- the transmission unit 24 transmits the MBSFN subframe to “ue-CapabilityRAT-ContainerList” (A) in the information element “UECapabilityInformation-r8” in “RRC RN (UE) Capability Information”.
- An “MBSFN subframe allocation pattern (see FIG. 5)” indicating transmission timing may be set.
- the radio base station DeNB includes a reception unit 11, a transmission unit 12, and a scheduling unit 13.
- the receiving unit 11 is configured to acquire the transmission timing of the MBSFN subframe from the relay node RN when setting the RRC connection with the relay node RN.
- the receiving unit 11 may be configured to acquire the transmission timing of the MBSFN subframe from “RRC RN (UE) Capability Information” transmitted in the RRC connection setting procedure.
- steps S3001 to S3015 are the same as the operations in steps S1001 to S1015 shown in FIG.
- step S2011 the radio base station DeNB does not notify the relay node RN of the transmission timing of the above MBSFN subframe by “RRC Connection Reconfiguration”.
- step S3008 the relay node RN notifies the relay node RN of the transmission timing of the MBSFN subframe by “RRC RN (UE) Capability Information”.
- the mobile communication system according to the second embodiment of the present invention can reduce the occurrence of interference in the relay node RN by simple control.
- Modification 1 With reference to FIG. 13, a mobile communication system according to Modification 1 of the second embodiment of the present invention will be described.
- the mobile communication system according to the first modification will be described by focusing on the differences from the mobile communication system according to the second embodiment of the present invention described above.
- the transmission unit 24 of the relay node RN performs MBSFN on the radio base station DeNB by “Un RN Configuration Indication” instead of “RRC RN (UE) Capability Information”. You may be comprised so that the transmission timing of a sub-frame may be notified.
- Un RN Configuration Indication is not defined in the existing RRC connection setting procedure, but is a signal used in a procedure newly defined between the radio base station DeNB and the relay node RN.
- the reception unit 11 of the radio base station DeNB may be configured to acquire the transmission timing of the MBSFN subframe from the “Un RN Configuration Indication” described above.
- step S4008 the relay node RN does not notify the radio base station DeNB of the transmission timing of the above MBSFN subframe by “RRC RN (UE) Capability Information”.
- step S4016 the relay node RN notifies the radio base station DeNB of “Un RN Configuration Indication” for notifying the configuration of the Un radio bearer as a radio relay base station between the relay node RN and the radio base station DeNB. Send.
- the relay node RN notifies the radio base station DeNB of the transmission timing of the MBSFN subframe described above by “Un RN Configuration Indication”.
- the first feature of the present embodiment is a mobile communication method, and when the RRC connection is set between the radio base station DeNB and the relay node RN, the relay node RN Step A for notifying the transmission timing of the MBSFN subframe, Step B for performing scheduling so that the radio base station DeNB transmits a downlink signal to the relay node RN at the transmission timing of the MBSFN subframe, and the relay node RN And a process C for performing scheduling so as to transmit the downlink signal at a timing other than the transmission timing of the MBSFN subframe.
- the relay node RN transmits the MBSFN subframe to the radio base station DeNB by “RRC RN (UE) Capability Information” transmitted in the RRC connection setting procedure.
- the transmission timing may be notified.
- the second feature of the present embodiment is the radio base station DeNB, which is configured to acquire the transmission timing of the MBSFN subframe from the relay node RN when setting the RRC connection with the relay node RN. And a scheduling unit 13 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 receiving unit 11 is configured to acquire the transmission timing of the MBSFN subframe from “RRC RN (UE) Capability Information” transmitted in the RRC connection setting procedure. Also good.
- the third feature of the present embodiment is the relay node RN, which notifies the radio base station DeNB of the transmission timing of the MBSFN subframe when an RRC connection is established with the radio base station DeNB.
- the gist of the present invention is that the transmission unit 24 configured as described above and the scheduling unit 22 configured to perform scheduling so as to transmit a downlink signal at a timing other than the transmission timing of the MBSFN subframe.
- the transmission unit 24 notifies the radio base station DeNB of the transmission timing of the MBSFN subframe by “RRC RN (UE) Capability Information”. It may be configured as follows.
- 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 a storage medium of an arbitrary format 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. Further, such a storage medium and a 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. In addition, the storage medium and the processor may be provided as a discrete component in the radio base station DeNB, the relay node RN, the core node CN, and the mobile station UE.
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Abstract
Description
図1乃至図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構成について説明する。
図7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8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。
図9乃至図12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について説明する。以下、本発明の第2の実施形態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。
図13を参照して、本発明の第2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2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 (16)
- 無線基地局とリレーノードとの間でコネクションを設定する際に、該無線基地局が、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、
前記工程Aにおいて、前記無線基地局は、前記RRCコネクションの設定手順において送信される「RRC Connection Reconfiguration」によって、前記リレーノードに対して、前記所定タイミング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。 - 無線基地局とリレーノードとの間でコネクションを設定する際に、該リレーノードが、該無線基地局に対して、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、
前記工程Aにおいて、前記リレーノードは、前記RRCコネクションの設定手順において送信される「RRC RN(UE) Capability Information」によって、前記無線基地局に対して、前記所定タイミングを通知することを特徴とする請求項3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乃至4のいずれか一項に記載の移動通信方法。
- 無線基地局であって、
リレーノードとの間でコネクションを設定する際に、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RRCコネクションの設定手順において送信される「RRC Connection Request」を受信するように構成されている受信部を具備し、
前記RRCコネクションの設定手順において、前記通知部は、前記受信部によって受信された「RRC Connection Request」の送信元が前記リレーノードである場合、「RRC Connection Reconfiguration」によって、前記リレーノードに対して、前記所定タイミングを通知するように構成されていることを特徴とする請求項6に記載の無線基地局。 - 無線基地局であって、
リレーノードとの間でコネクションを設定する際に、該リレーノードから、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、
前記取得部は、前記RRCコネクションの設定手順において送信される「RRC RN(UE) Capability Information」から前記所定タイミングを取得するように構成されていることを特徴とする請求項8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6乃至9のいずれか一項に記載の無線基地局。
- リレーノードであって、
無線基地局との間でコネクションを設定する際に、該無線基地局から、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、
前記取得部は、前記RRCコネクションの設定手順において送信される「RRC Connection Reconfiguration」から、前記所定タイミングを取得するように構成されていることを特徴とする請求項11に記載のリレーノード。 - 前記RRCコネクションの設定手順において、前記リレーノードによって送信されたことを示す情報を含む「RRC Connection Request」を送信するように構成されている送信部を具備することを特徴とする請求項12に記載のリレーノード。
- リレーノードであって、
無線基地局との間でコネクションを設定する際に、該無線基地局に対して、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RRCコネクションの設定手順において、前記通知部は、「RRC RN(UE) Capability Information」によって、前記無線基地局に対して、前記所定タイミングを通知するように構成されていることを特徴とする請求項14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11乃至15のいずれか一項に記載のリレーノード。
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AU2010263801A AU2010263801B2 (en) | 2009-06-22 | 2010-06-10 | Mobile communication method, radio base station and relay node |
CN2010800243802A CN102461307B (zh) | 2009-06-22 | 2010-06-10 | 移动通信方法、无线基站和中继节点 |
CA2755900A CA2755900C (en) | 2009-06-22 | 2010-06-10 | Mobile communication method, radio base station, and relay node |
BRPI1013583A BRPI1013583A2 (pt) | 2009-06-22 | 2010-06-10 | método de comunicação móvel, estação base de rádio e nó de retransmissão |
US13/257,694 US20120051283A1 (en) | 2009-06-22 | 2010-06-10 | Mobile communication method, radio base station, and relay node |
KR1020117021222A KR101150278B1 (ko) | 2009-06-22 | 2010-06-10 | 이동통신방법, 무선기지국 및 릴레이 노드 |
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US20120051283A1 (en) | 2012-03-01 |
CA2755900A1 (en) | 2010-12-29 |
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JP4660609B2 (ja) | 2011-03-30 |
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AU2010263801B2 (en) | 2013-10-24 |
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JP2011004371A (ja) | 2011-01-06 |
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AU2010263801A1 (en) | 2011-10-13 |
EP2410807B1 (en) | 2013-02-20 |
ES2402730T3 (es) | 2013-05-08 |
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BRPI1013583A2 (pt) | 2016-04-12 |
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