WO2011007686A1 - 移動通信システム、移動局及び無線基地局 - Google Patents

移動通信システム、移動局及び無線基地局 Download PDF

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Publication number
WO2011007686A1
WO2011007686A1 PCT/JP2010/061352 JP2010061352W WO2011007686A1 WO 2011007686 A1 WO2011007686 A1 WO 2011007686A1 JP 2010061352 W JP2010061352 W JP 2010061352W WO 2011007686 A1 WO2011007686 A1 WO 2011007686A1
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WO
WIPO (PCT)
Prior art keywords
radio base
base station
frequency carriers
mobile
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/061352
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English (en)
French (fr)
Japanese (ja)
Inventor
幹生 岩村
ウリ アンダルマワンティ ハプサリ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
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NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to RU2012103447/08A priority Critical patent/RU2493675C1/ru
Priority to AU2010271918A priority patent/AU2010271918B2/en
Priority to EP10799745.4A priority patent/EP2456244B1/en
Priority to CA2767989A priority patent/CA2767989C/en
Priority to KR1020127002356A priority patent/KR101302064B1/ko
Priority to US13/383,731 priority patent/US8676164B2/en
Priority to CN201080031950.0A priority patent/CN102474717B/zh
Priority to ES10799745.4T priority patent/ES2449698T3/es
Publication of WO2011007686A1 publication Critical patent/WO2011007686A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/041—Key generation or derivation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/002—Countermeasures against attacks on cryptographic mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/043—Key management, e.g. using generic bootstrapping architecture [GBA] using a trusted network node as an anchor
    • H04W12/0431—Key distribution or pre-distribution; Key agreement
    • 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
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to a mobile communication system, a mobile station, and a radio base station.
  • a mobile station UE communicates with a radio base station eNB using a plurality of frequency carriers simultaneously.
  • a technique called “Carrier Aggregation” is available.
  • the frequency carrier constituting the “Carrier Aggregation” is called “Component Carrier”.
  • Each “Component Carrier” may function as an independent LTE cell. That is, it is possible to perform “Carrier Aggregation” by setting an LTE cell using a different frequency carrier as “Component Carrier”.
  • the key KeNB used for wireless security processing is the “PCI (Physical Cell Identity) and physical cell ID” and “E-ARFCN (E-UTRA Absolute Radio Frequency Number, frequency code) of the cell in communication. Depends on both.
  • KDF Key Derivation Function
  • such a key KeNB is generated from a different parent key KASME for each mobile station UE. Accordingly, in the LTE scheme, the key KeNB is cell specific and UE specific (UE specific).
  • the LTE-Advanced mobile communication system has a problem that wireless security processing in “Carrier Aggregation” is not defined.
  • an object of the present invention is to provide a mobile communication system, a mobile station, and a radio base station that can appropriately implement radio security processing in “Carrier Aggregation”.
  • a first feature of the present invention is a mobile communication system, in which a mobile station is configured to communicate with a radio base station using a plurality of frequency carriers simultaneously.
  • the mobile station is configured to perform communication by applying the same key to each of the plurality of frequency carriers.
  • a second feature of the present invention is a mobile station comprising a communication unit configured to perform communication with a radio base station using a plurality of frequency carriers simultaneously, and the communication unit includes:
  • the gist of the invention is that the same key is applied to each of the plurality of frequency carriers to perform communication security processing.
  • a third feature of the present invention is a radio base station, comprising a communication unit configured to perform communication with a mobile station using a plurality of frequency carriers simultaneously, and the communication unit includes
  • the gist of the invention is that the same key is applied to each of the plurality of frequency carriers to perform communication security processing.
  • 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 protocol stack diagram of the mobile communication system according to the first embodiment of the present invention.
  • FIG. 3 is a diagram for explaining an example in which three PDCP-SDUs are transmitted in the mobile communication system according to the first embodiment of the present invention.
  • FIG. 4 is a functional block diagram of the mobile station according to the first embodiment of the present invention.
  • FIG. 5 is a functional block diagram of the radio base station 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.
  • the mobile communication system according to the present embodiment is an LTE-Advanced mobile communication system, in which the mobile station UE uses a plurality of frequency carriers simultaneously with the radio base station eNB. Communication can be performed, that is, “Carrier Aggregation” can be used.
  • PCI Physical Cell ID
  • the cells # 1 to # 3 are all cells under the radio base station eNB.
  • the cells # 1 to # 3 may be independent LTE cells.
  • the mobile station UE and the radio base station eNB include a physical (PHY) layer function, a MAC (Media Access Control) layer function, and an RLC (Radio Link Control). ) Layer function and PDCP (Packet Data Convergence Protocol) layer function.
  • PHY physical
  • MAC Media Access Control
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • the PDCP layer function is configured to perform radio security processing in communication between the mobile station UE and the radio base station eNB.
  • the RLC layer function is configured to perform retransmission control in the RLC layer
  • the MAC layer function is configured to perform HARQ retransmission control.
  • FIG. 3 shows an example in which three PDCP-SDUs # 1 to # 3 are transmitted.
  • the PDCP layer function performs a ciphering process on the PDCP-SDUs # 1 to # 3 of U-plane, and performs PDCP-PDUs # 1 to # 3. Generate and pass to RLC layer function.
  • the PDCP layer function provides MAC-I for integrity protection processing in addition to performing ciphering processing for PDCP-SDUs # 1 to # 3 of C-plane.
  • PDCP-PDUs # 1 to # 3 are generated and passed to the RLC layer function.
  • the RLC layer function performs segment processing (segmentation) or concatenation processing (concatenation) so as to generate RLC-PDUs # 1 to # 4 of TBS (Transmission Block Size) specified by the scheduler, and RLC. Add a header.
  • the RLC layer function performs retransmission control in the RLC layer when activated in the AM mode.
  • the RLC layer function passes the generated RLC-PDUs # 1 to # 4 to the MAC layer function.
  • the MAC layer function adds MAC headers to RLC-PDUs # 1 to # 4 to generate MAC-PDUs # 1 to # 4, and uses the HARQ retransmission control to implement the physical layer function. Send to.
  • the mobile station UE includes an acquisition unit 11, a key generation unit 12, and a communication unit 13.
  • the acquiring unit 11 From the radio base station eNB, the acquiring unit 11 performs “PCI” for identifying each cell under the radio base station eNB and “E-ARFCN (E ⁇ ) for identifying the frequency carrier used in each cell. UTRA Absolute Radio Frequency Channel Number) ”.
  • the key generation unit 12 is configured to generate a key KeNB based on “PCI” and “E-ARFCN” acquired by the acquisition unit 11.
  • the key generation unit 12 may be configured to generate a key KeNB by a key generation function KDF (PCI, E-ARFCN).
  • KDF key generation function
  • the key KeNB is a key for generating keys (KUPenc, KRRCenc, KRRCint) used in radio security processing in the PDCP layer function.
  • KUPenc is a key for U-plane concealment processing
  • KRRCenc is a key for C-plane concealment processing
  • KRRCint is a key for C-plane falsification protection processing
  • the key generation unit 12 is configured to generate one key KeNB to be applied to all of a plurality of frequency carriers.
  • the key generation unit 12 applies a key (KUPenc, KRRCenc, KRRCint) used in wireless security processing in the PDCP layer function to all of a plurality of frequency carriers. It is configured to generate a set of keys (KUPenc, KRRCenc, KRRCint).
  • the key generation unit 12 is based on “PCI” and “E-ARFCN” of any one of a plurality of frequency carriers, specifically, “Anchor Carrier”.
  • the key KeNB is generated based on “PCI” and “E-ARFCN”.
  • one “Anchor Carrier” is determined from a plurality of frequency carriers constituting “Carrier Aggregation”.
  • “Anchor Carrier” is used at “Connection Setup”, “Security Mode Command”, “Reconfiguration”, “Intra-RAT Handover”, “Inter-RAT Handover”, “Re- In the case of “establishment” or the like, the radio base station eNB sets the mobile station UE.
  • Anchor Carrier may be defined as a frequency carrier in which the mobile station UE first establishes an RRC connection.
  • the key generation unit 12 when “Anchor Carrier” is changed, the key generation unit 12 generates the above-described key KeNB again based on “PCI” and “E-ARFCN” of “Anchor Carrier” after the change. It may be configured.
  • an intra-eNB handover may be activated from the radio base station eNB.
  • Intra-eNB handover is instructed, the mobile station UE changes the “Anchor Carrier” and simultaneously updates the key KeNB, and performs reset processing for each layer of PHY, MAC, and RLC in the same manner as the LTE handover. You may go.
  • the communication unit 13 includes the physical (PHY) layer function, the MAC layer function, the RLC layer function, and the PDCP layer function, and communicates with the radio base station eNB using a plurality of frequency carriers at the same time. Is configured to do.
  • the secret processing and falsification protection processing algorithms used in the PDCP layer are also configured to be the same in each of the plurality of frequency carriers.
  • the algorithm to be used is from the radio base station eNB at “Security Mode Command”, “Reconfiguration”, “Intra-RAT Handover”, “Inter-RAT Handover”, “Re-establishment”, etc. ,
  • the radio base station eNB sets the mobile station UE.
  • the radio base station eNB includes a key generation unit 21 and a communication unit 22.
  • the key generation unit 21 has the same function as the key generation unit 12 shown in FIG. 4
  • the communication unit 22 has the same function as the communication unit 13 shown in FIG.
  • step S1001 the mobile station UE requests the radio base station eNB to establish communication (RRC (Radio Resource Control) connection) with the cell # 1 “RRC”. Send "Connection Request”.
  • RRC Radio Resource Control
  • step S1002 the radio base station eNB transmits “RRC Connection Setup” for the “RRC Connection Request” received in step S1001 to the mobile station UE.
  • step S1003 the mobile station UE transmits “RRC Connection Setup Complete” to the radio base station eNB.
  • step S1004 an RRC connection using the frequency carrier F1 is established between the mobile station UE and the radio base station eNB, and communication via the RRC connection is started.
  • step S1005 the radio base station eNB transmits “RRC Connection Reconfiguration” related to the RRC connection established using the frequency carrier F1 to the mobile station UE.
  • Such “RRC Connection Reconfiguration” is to set that the frequency carrier F2 is added as a radio resource used for communication.
  • step S1006 the mobile station UE transmits “RRC Connection Reconfiguration Complete” to the radio base station eNB.
  • step S1007 communication using the frequency carrier F1 and the frequency carrier F2 simultaneously is started between the mobile station UE and the radio base station eNB.
  • the RLC-PDU may be retransmitted by “Composite Carrier” different from the initial transmission.
  • the RLC-PDU includes one or more concealed PDCP-PDUs. Therefore, when the key KeNB that follows the LTE scheme and depends on each frequency carrier is used, the following points are concerned.
  • the PDCP layer is once deprived of confidentiality, and a concealment process that matches the "Composite Carrier" used for retransmission is performed. It is assumed that it must be done again to regenerate the RLC-PDU.
  • the receiving side when transmitting with a connection using a different "Composite Carrier" for each PDCP-PDU segment, the receiving side receives each segment of the received PDCP-PDU. It is assumed that the key used for the concealment process is different, and the PDCP-PDU decryption process becomes extremely difficult.
  • the first feature of the present embodiment is a mobile communication system, in which the mobile station UE is configured to communicate with the radio base station eNB using a plurality of frequency carriers simultaneously.
  • the gist of the present invention is that the mobile station UE is configured to perform communication security processing by applying the same key KeNB to all the frequency carriers.
  • the mobile station UE sets “PCI (physical cell ID)” and “E-ARFCN (frequency code)” of “Anchor Carrier (one of a plurality of frequency carriers)”. Based on this, it may be configured to generate such a key KeNB.
  • PCI physical cell ID
  • E-ARFCN frequency code
  • the same security processing confidential processing and tampering prevention processing
  • the same security processing may be used for all the above-described frequency carriers.
  • “Anchor Carrier (anchor carrier)” may be specified by the radio base station.
  • the mobile station UE when “Anchor Carrier” is changed by the radio base station eNB, the mobile station UE is based on “PCI” and “E-ARFCN” of “Anchor Carrier” after the change.
  • the key KeNB described above may be generated.
  • the second feature of the present embodiment is a mobile station UE, comprising a communication unit 13 configured to communicate with a radio base station eNB using a plurality of frequency carriers simultaneously,
  • the gist of the communication unit 13 is that the same key KeNB is applied to all the frequency carriers to perform communication security processing.
  • the key generation unit 12 configured to generate the key KeNB based on “PCI” and “E-ARFCN” of “Anchor Carrier” may be provided. .
  • the communication unit 13 may be configured to use the same security processing (confidential processing and tampering prevention processing) algorithm for all the above-described frequency carriers.
  • “Anchor Carrier” may be specified by the radio base station eNB.
  • the key generation unit 12 sets “PCI” and “E-ARFCN” of “Anchor Carrier” after the change. Based on this, the above-described key KeNB may be generated.
  • a third feature of the present embodiment is a radio base station eNB, which includes a communication unit 22 configured to perform communication with a mobile station UE using a plurality of frequency carriers simultaneously, The gist is that the communication unit 22 is configured to apply the same key KeNB to all the frequency carriers to perform communication security processing.
  • a key generation unit 21 configured to generate the key KeNB based on “PCI” and “E-ARFCN” of “Anchor Carrier” may be provided. .
  • the communication unit 22 may be configured to use the same security processing (confidential processing and tampering prevention processing) algorithm for all the above-described frequency carriers.
  • the key generation unit 21 when “Anchor Carrier” is changed, the key generation unit 21 performs the above-described operation based on “PCI” and “E-ARFCN” of “Anchor Carrier” after the change.
  • the key KeNB may be configured to be generated.
  • radio base station eNB and the mobile station UE described above 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. .
  • 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 radio base station eNB or the mobile station UE. Further, the storage medium and the processor may be provided as a discrete component in the radio base station eNB or the mobile station UE.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/JP2010/061352 2009-07-16 2010-07-02 移動通信システム、移動局及び無線基地局 Ceased WO2011007686A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
RU2012103447/08A RU2493675C1 (ru) 2009-07-16 2010-07-02 Система мобильной связи, мобильная станция и базовая радиостанция
AU2010271918A AU2010271918B2 (en) 2009-07-16 2010-07-02 Mobile communication system, mobile station and radio base station
EP10799745.4A EP2456244B1 (en) 2009-07-16 2010-07-02 Mobile communication system, mobile station and radio base station
CA2767989A CA2767989C (en) 2009-07-16 2010-07-02 Mobile communication system, mobile station and radio base station using carrier aggregation security process
KR1020127002356A KR101302064B1 (ko) 2009-07-16 2010-07-02 이동통신시스템, 이동국 및 무선기지국
US13/383,731 US8676164B2 (en) 2009-07-16 2010-07-02 Mobile communication system, mobile station, and radio base station using a carrier aggregation security process
CN201080031950.0A CN102474717B (zh) 2009-07-16 2010-07-02 移动通信系统、移动台以及无线基站
ES10799745.4T ES2449698T3 (es) 2009-07-16 2010-07-02 Sistema de comunicación móvil, estación móvil, y una estación de base radioeléctrica

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-168130 2009-07-16
JP2009168130A JP5038366B2 (ja) 2009-07-16 2009-07-16 移動通信システム、移動局及び無線基地局

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WO2011007686A1 true WO2011007686A1 (ja) 2011-01-20

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US (1) US8676164B2 (enExample)
EP (1) EP2456244B1 (enExample)
JP (1) JP5038366B2 (enExample)
KR (1) KR101302064B1 (enExample)
CN (1) CN102474717B (enExample)
AU (1) AU2010271918B2 (enExample)
CA (1) CA2767989C (enExample)
CL (1) CL2012000128A1 (enExample)
ES (1) ES2449698T3 (enExample)
RU (1) RU2493675C1 (enExample)
WO (1) WO2011007686A1 (enExample)

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CN103906053B (zh) * 2012-12-28 2019-09-10 北京三星通信技术研究有限公司 配置和传输加密密匙的方法
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JP6035227B2 (ja) * 2013-10-31 2016-11-30 株式会社Ｎｔｔドコモ 移動通信方法
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JP7327603B2 (ja) 2013-01-17 2023-08-16 日本電気株式会社 基地局及び基地局により行われる方法

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CA2767989A1 (en) 2011-01-20
EP2456244B1 (en) 2013-12-18
CA2767989C (en) 2014-12-16
RU2493675C1 (ru) 2013-09-20
US20120157053A1 (en) 2012-06-21
ES2449698T3 (es) 2014-03-20
EP2456244A1 (en) 2012-05-23
AU2010271918A1 (en) 2012-02-16
CL2012000128A1 (es) 2012-08-24
EP2456244A4 (en) 2013-01-09
AU2010271918B2 (en) 2013-11-07
CN102474717A (zh) 2012-05-23
CN102474717B (zh) 2014-03-12
KR101302064B1 (ko) 2013-09-05
KR20120042872A (ko) 2012-05-03
US8676164B2 (en) 2014-03-18
JP2011024037A (ja) 2011-02-03
JP5038366B2 (ja) 2012-10-03

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