WO2015046352A1 - 移動通信システム - Google Patents
移動通信システム Download PDFInfo
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- WO2015046352A1 WO2015046352A1 PCT/JP2014/075468 JP2014075468W WO2015046352A1 WO 2015046352 A1 WO2015046352 A1 WO 2015046352A1 JP 2014075468 W JP2014075468 W JP 2014075468W WO 2015046352 A1 WO2015046352 A1 WO 2015046352A1
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- base station
- radio base
- srb2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
- H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W84/20—Master-slave selection or change arrangements
Definitions
- the present invention relates to a mobile communication system.
- CA Carrier Aggregation, Carrier Aggregation
- LTE Long Term Evolution
- CC Component Carrier, subordinate to the same radio base station eNB
- Inter-eNB CA is performed in order to achieve the same throughput as the LTE Release-10. Is required.
- the existing LTE method has a problem that it is not specified how to establish an SRB (Signaling Radio Bearer) when the above-mentioned “Inter-eNB CA” is performed.
- SRB Signaling Radio Bearer
- 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 system capable of appropriately setting SRB0 to SRB2 when performing “Inter-eNB CA”.
- a first feature of the present invention is a mobile communication system configured such that a mobile station can perform carrier aggregation using a cell under the control of a master radio base station and a cell under the control of a slave radio base station.
- SRB0, SRB1, and SRB2 are configured to be established between the mobile station and the master radio base station, and the slave radio base station is added.
- the slave radio base station transmits the signal for adding or changing the SRB to the mobile station, thereby establishing the SRB1 established between the mobile station and the master radio base station.
- SRB1 and SRB2 are established between the mobile station and the slave radio base station so as to have the same setting contents as the SRB2. It is summarized as that is configured to.
- a second feature of the present invention is a mobile communication system configured such that a mobile station can perform carrier aggregation using a cell under the master radio base station and a cell under the slave radio base station.
- SRB0, SRB1 and SRB2 are configured to be established between the mobile station and the master radio base station, and the master radio base station
- the radio base station is configured to notify the setting information of the SRB1 and the SRB2 and to instruct the mobile station to add the slave radio base station.
- the setting information of the SRB1 and the SRB2 established with the master radio base station is used.
- 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 sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
- FIG. 3 is a diagram illustrating a format example of “SRB-ToAddMod” transmitted by the radio base station eNB # 2 according to the first embodiment of the present invention.
- FIG. 4 is an overall configuration diagram of a mobile communication system according to the second embodiment of the present invention.
- FIG. 5 is a sequence diagram showing operations of the mobile communication system according to the second embodiment of the present invention.
- FIG. 6 is a diagram for explaining the prior art.
- Mobile communication system Mobile communication system according to the first embodiment of the present invention
- or FIG. 3 the mobile communication system which concerns on the 1st Embodiment of this invention is demonstrated.
- an LTE mobile communication system As an example of the mobile communication system according to the present embodiment, an LTE mobile communication system will be described.
- the present invention is also applicable to mobile communication systems other than the LTE system.
- the mobile communication system includes a radio base station eNB # 1 and a radio base station eNB # 2.
- the radio base station eNB # 1 is a master radio base station (or a macro radio base station that manages a macro cell) M-eNB
- the radio base station eNB # 2 is a slave radio. It is assumed that it is a base station (or a small radio base station that manages a small cell) S-eNB.
- the mobile station UE can perform “Inter-eNB CA” using a cell under the radio base station eNB # 1 and a cell under the radio base station eNB # 2. It is configured as follows.
- the radio base station eNB # 1 and the mobile station UE have an RRC (Radio Resource Control) layer function, and the radio base station eNB # 2 has an RRC layer function. It may not be provided.
- RRC Radio Resource Control
- the RRC layer function of the radio base station eNB # 1 is configured to generate all the RRC messages addressed to the mobile station UE and transmit them to the mobile station UE.
- all of the radio base station eNB # 1, the radio base station eNB # 2, and the mobile station UE may have an RRC (Radio Resource Control) layer function. .
- RRC Radio Resource Control
- each of the RRC layer function of the radio base station eNB # 1 and the RRC layer function of the radio base station eNB # 2 is configured to generate an RRC message addressed to the mobile station UE and transmit it to the mobile station UE. Yes.
- the RRC message generated by the RRC layer function of the radio base station eNB # 1 and the RRC message generated by the RRC layer function of the radio base station eNB # 2 are determined by the LTE scheme.
- SRB0, SRB1, and SRB2 are configured to be established between the mobile station UE and the radio base station eNB # 1. Yes.
- the SRB0 is configured to transmit only basic signaling for establishing the RRC connection such as establishment and re-establishment of the RRC connection and rejection of the RRC connection request signal. It is configured to be established only between the station eNB # 1 and not established between the mobile station UE and the radio base station eNB # 2.
- SRB1 is a bearer for transmitting an RRC message together with a NAS (Non Access Stratum) message before the establishment of SRB2.
- NAS Non Access Stratum
- SRB2 is a bearer for transmitting an RRC message including “logged measurement information” along with the NAS message, and has a lower priority than SRB1, and after “security action” by E-UTRAN. Is set.
- the RRC message to be transmitted via the SRB1 and the SRB2 may be transmitted by the radio base station eNB # 1, or may be transmitted by the radio base station eNB # 2.
- the radio base station eNB # 2 when the radio base station eNB # 2 is added, the radio base station transmits the existing “SRB-ToAddMod” to the mobile station UE, so that the eNB # 2 It is configured to establish SRB1 and SRB2 between the mobile station UE and the radio base station eNB # 2 so as to have the same setting contents as SRB1 and SRB2 established with the base station eNB # 1 Yes.
- the radio base station eNB # 2 is added (the mobile station UE When “Inter-eNB CA” using a cell under radio base station eNB # 1 and a cell under radio base station eNB # 2 is determined), in step S1001, the radio base station eNB # 2 “SRB-ToAddMod” shown in FIG. 3 is transmitted to the mobile station UE.
- the “SRB-To-AddMod” is obtained by replacing the SRB1 and SRB2 having the same setting contents as the SRB1 and SRB2 established between the mobile station UE and the radio base station eNB # 1, with the mobile station UE and the radio base station eNB #. 2 is instructed to be established between the two.
- the radio base station eNB # 2 sets the identification information of the SRB by the information element “srb-Identity” in the “SRB-To-AddMod”, and sets “SRB-ToAddMod”.
- the information element “rlc-Config” in FIG. 6 is used for setting in the RLC layer, and the information element “logicalChannelConfig” in “SRB-ToAddMod” is used for setting related to the logical channel.
- the radio base station eNB # 2 is established for the RRC message to be transmitted via the SRB1 and SRB2. It transmits with respect to the mobile station UE via SRB1 and SRB2.
- wireless base station eNB # 1 is transmitted with respect to the mobile station UE via SRB0 established between the mobile station UE and radio base station eNB # 1. Sent.
- the mobile station UE when the above-described “Inter-eNB CA” is performed, SRB1 and SRB2 established between the mobile station UE and the radio base station eNB # 2 are Since the mobile station UE has the same setting content as the SRB1 and SRB2 established between the mobile station UE and the radio base station eNB # 1, the mobile station UE has one single line as in the existing LTE scheme. The effect is that SRB1 and one SRB2 appear to be established, and it is not necessary to determine via which SRB1 and SRB2 the RRC message should be received with which radio base station eNB. Play.
- Mobile communication system according to the second embodiment of the present invention Mobile communication system according to the second embodiment of the present invention
- the mobile communication system according to the second embodiment of the present invention will be described with reference to FIG. 4 and FIG. 5 while focusing on the differences from the mobile communication system according to the second embodiment described above.
- SRB0, SRB1, and SRB2 are configured to be established between the mobile station UE and the radio base station eNB # 1. ing.
- SRB1 and SRB2 are configured to be established between the mobile station UE and the radio base station eNB # 2.
- the radio base station eNB # 2 uses the setting information of the SRB1 and SRB2 established between the mobile station UE and the radio base station eNB # 1, to the mobile station UE, such SRB1 and SRB2 It is configured to transmit a signal to be transmitted above.
- the radio base station eNB # 2 is configured to acquire the setting information of the SRB1 and SRB2 via the X2 interface with the radio base station eNB # 1.
- the radio base station eNB # 1 As illustrated in FIG. 5, in a state where SRB0, SRB1, and SRB2 are set between the mobile station UE and the radio base station eNB # 1, the radio base station eNB # 1 When it is determined to add # 2 (the mobile station UE performs “Inter-eNB CA” using a cell under the radio base station eNB # 1 and a cell under the radio base station eNB # 2), step S2002 , The setting information of SRB1 and SRB2 established between the mobile station UE and the radio base station eNB # 1 is transmitted to the radio base station eNB # 2.
- the radio base station eNB # 2 After receiving the setting information in step S2002, the radio base station eNB # 2 notifies the radio base station eNB # 1 that the setting has been confirmed in step S2003.
- step S2004 the radio base station eNB # 1 transmits “RRCConnectionReconfiguration” to the mobile station UE, and instructs the addition of the radio base station eNB # 2.
- step S2005 the mobile station UE transmits “RRCConnectionReconfigurationComplete” to the radio base station eNB # 1, and in step S2006, the setting information of the SRB1 and SRB2 established with the radio base station eNB # 1 Is used to apply settings for sending data on SRB1 and SRB2 via radio base station eNB # 2.
- wireless base station eNB # 1 is transmitted with respect to the mobile station UE via SRB0 established between the mobile station UE and radio base station eNB # 1. Sent.
- the radio base station eNB # 2 uses the setting information of the SRB1 and SRB2 established between the mobile station UE and the radio base station eNB # 1 to transmit the RRC message via the SRB1 and SRB2.
- Mobile station UE as in the existing LTE scheme, mobile station UE appears to have one SRB1 and one SRB2 established, and transmits an RRC message to which radio base station There is an effect that it is not necessary to determine whether to receive via the SRB1 and SRB2 established with the eNB.
- the first feature of the present embodiment is that the mobile station UE uses an “Inter-eNB CA” that uses a cell under the radio base station MeNB (master radio base station) and a cell under the radio base station SeNB (slave radio base station).
- (Carrier aggregation) is a mobile communication system configured to be able to perform" Inter-eNB CA ", the SRB0, SRB1 and SRB2 are connected to the mobile station UE and the radio base
- the radio base station SeNB adds “SRB-ToAddMod (SRB addition or change) to the mobile station UE.
- SRB1 established between the mobile station UE and the radio base station MeNB by transmitting So as to have the same settings as the RB2, which subject matter that is configured to establish the SRB1 and SRB2 between a mobile station UE and the radio base station SeNB.
- the second feature of the present embodiment is configured such that the mobile station UE can perform “Inter-eNB CA” using a cell under the radio base station MeNB and a cell under the radio base station SeNB.
- the SRB0, SRB1, and SRB2 are configured to be established between the mobile station UE and the radio base station MeNB
- the radio base station MeNB is configured to notify the radio base station SeNB of the setting information of the above-described SRB1 and SRB2, and to instruct the mobile station UE to add the radio base station SeNB.
- the mobile station UE uses the setting information of the SRB1 and SRB2 established with the radio base station MeNB, Station can be summarized as being configured to apply the settings to send an RRC message (signal) via SeNB on SRB1 and SRB2.
- radio base stations MeNB, SeNB and mobile station UE may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both. Also good.
- the software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM).
- RAM Random Access Memory
- flash memory ROM (Read Only Memory)
- EPROM Erasable Programmable ROM
- EEPROM Electrically Erasable and Programmable, Removable ROM, Hard Disk, and Removable ROM.
- 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. Such a storage medium and processor may be provided in the ASIC. Such an ASIC may be provided in the radio base stations MeNB and SeNB and the mobile station UE. Further, the storage medium and the processor may be provided in the radio base stations MeNB and SeNB and the mobile station UE as discrete components.
- UE ... Mobile station eNB # 1 (MeNB), eNB # 2 (SeNB) ... Radio base station
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Abstract
Description
図1乃至図3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。本実施形態に係る移動通信システムとして、LTE方式の移動通信システムを例示して説明するが、本発明は、LTE方式以外の移動通信システムにも適用可能である。
以下、図4及び図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について、上述の第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。
eNB#1(MeNB),eNB#2(SeNB)…無線基地局
Claims (2)
- 移動局が、マスター無線基地局配下のセル及びスレーブ無線基地局配下のセルを用いたキャリアアグリゲーションを行うことができるように構成されている移動通信システムであって、
前記キャリアアグリゲーションが行われている場合、SRB0、SRB1及びSRB2は、前記移動局と前記マスター無線基地局との間で確立されるように構成されており、
前記スレーブ無線基地局が追加される場合、該スレーブ無線基地局は、前記移動局に対して、SRBを追加又は変更するための信号を送信することによって、該移動局と前記マスター無線基地局との間で確立されている前記SRB1及び前記SRB2と同じ設定内容となるように、該移動局と前記スレーブ無線基地局との間でSRB1及びSRB2を確立するように構成されていることを特徴とする移動通信システム。 - 移動局が、マスター無線基地局配下のセル及びスレーブ無線基地局配下のセルを用いたキャリアアグリゲーションを行うことができるように構成されている移動通信システムであって、
前記キャリアアグリゲーションが行われている場合、SRB0、SRB1及びSRB2は、前記移動局と前記マスター無線基地局との間で確立されるように構成されており、
前記マスター無線基地局は、前記スレーブ無線基地局に対して、前記SRB1及び前記SRB2の設定情報を通知すると共に、前記移動局に対して、該スレーブ無線基地局を追加するように指示するように構成されており、
前記移動局は、前記指示に応じて、前記マスター無線基地局との間で確立されている前記SRB1及び前記SRB2の設定情報を用いて、前記スレーブ無線基地局経由で該SRB1及び該SRB2上で信号を送るための設定を適用するように構成されていることを特徴とする移動通信システム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/024,794 US20160249389A1 (en) | 2013-09-26 | 2014-09-25 | Mobile communication system |
CN201480052922.5A CN105580472A (zh) | 2013-09-26 | 2014-09-25 | 移动通信系统 |
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JP2013-200657 | 2013-09-26 | ||
JP2013200657A JP6231341B2 (ja) | 2013-09-26 | 2013-09-26 | 移動通信システム |
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WO2015046352A1 true WO2015046352A1 (ja) | 2015-04-02 |
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PCT/JP2014/075468 WO2015046352A1 (ja) | 2013-09-26 | 2014-09-25 | 移動通信システム |
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US (1) | US20160249389A1 (ja) |
JP (1) | JP6231341B2 (ja) |
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WO (1) | WO2015046352A1 (ja) |
Cited By (1)
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CN106559916A (zh) * | 2015-09-29 | 2017-04-05 | 电信科学技术研究院 | 一种建立辅助信令链路的方法及其装置、基站及终端 |
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WO2015070445A1 (zh) * | 2013-11-15 | 2015-05-21 | 华为技术有限公司 | 一种建立无线承载的方法及基站 |
WO2017195854A1 (ja) * | 2016-05-12 | 2017-11-16 | 株式会社Nttドコモ | 無線通信システム及びユーザ装置 |
CN108633018B (zh) | 2017-03-23 | 2024-02-02 | 华为技术有限公司 | 配置方法、装置及系统 |
JP2018029381A (ja) * | 2017-10-19 | 2018-02-22 | 株式会社Nttドコモ | 移動通信システム |
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CN102448058B (zh) * | 2011-01-10 | 2014-04-30 | 华为技术有限公司 | 一种Un接口上的数据保护方法与装置 |
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- 2013-09-26 JP JP2013200657A patent/JP6231341B2/ja not_active Expired - Fee Related
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2014
- 2014-09-25 CN CN201480052922.5A patent/CN105580472A/zh active Pending
- 2014-09-25 WO PCT/JP2014/075468 patent/WO2015046352A1/ja active Application Filing
- 2014-09-25 US US15/024,794 patent/US20160249389A1/en not_active Abandoned
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CN106559916A (zh) * | 2015-09-29 | 2017-04-05 | 电信科学技术研究院 | 一种建立辅助信令链路的方法及其装置、基站及终端 |
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JP2015070341A (ja) | 2015-04-13 |
US20160249389A1 (en) | 2016-08-25 |
CN105580472A (zh) | 2016-05-11 |
JP6231341B2 (ja) | 2017-11-15 |
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