WO2009084636A1 - 無線通信システム、無線通信装置、および暗号化方法 - Google Patents
無線通信システム、無線通信装置、および暗号化方法 Download PDFInfo
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- WO2009084636A1 WO2009084636A1 PCT/JP2008/073753 JP2008073753W WO2009084636A1 WO 2009084636 A1 WO2009084636 A1 WO 2009084636A1 JP 2008073753 W JP2008073753 W JP 2008073753W WO 2009084636 A1 WO2009084636 A1 WO 2009084636A1
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- bearer
- radio access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
- H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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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
Definitions
- the present invention relates to a technique for performing confidential setting of a circuit switching (CS) call in a wireless communication system.
- CS circuit switching
- 3GPP 3rd Generation Partnership Projects
- the wireless communication system shown in FIG. 1 has a configuration in which a UTRAN (Universal Terrestrial Radio Access Network) 10 that is a wireless access network is connected to a CN (Core Network) 40 that is a backbone network.
- UTRAN Universal Terrestrial Radio Access Network
- CN Core Network
- the CN 40 is provided with an MSC (Mobile-services Switching Center) 50, and the UTRAN 10 is provided with an RNC (Radio Network Controller) 20 and a Node B (base station device) 30.
- RNC Radio Network Controller
- Node B base station device
- the Node B 30 is connected to a UE (User Equipment: user device) 60 that is a radio communication device via a radio interface.
- Circuit switched calls include AMR frames and AMR-WB frames encoded with an AMR (Adaptive Multi-Rate) codec and an AMR-WB (AMR Wideband) codec. These AMR frames and AMR-WB frames are Until then, it was transmitted and received by DCH (Dedicated Channel). The function of transmitting and receiving a circuit-switched call using DCH in this way is called CS voice over DCH.
- AMR Adaptive Multi-Rate
- AMR-WB AMR Wideband
- UL-DPDCH Uplink Dedicated Physical Data Channel
- DL-DPDCH Downlink Dedicated Physical Data Channel
- AMR frame and the AMR-WB frame are concealed (encrypted and decrypted) in an entity called MAC (Media Access Control) -d.
- MAC Media Access Control
- radio access bearer for the circuit switching domain is simply referred to as “radio access bearer”.
- messages sent and received between the UE 60 and the UTRAN 10 are RRC (Radio Resource Control) messages
- messages sent and received between the UTRAN 10 and the MSC 50 are RANAP (Radio Access Network Application Part) messages. Will be described.
- an RRC connection is established between the UE 60 and the UTRAN 10.
- Step 1102 the MSC 50 transmits a RAB ASSIGNMENT REQUEST message instructing the UTRAN 10 to establish a radio access bearer on the DCH.
- the UTRAN 10 secures and sets the DCH resource, and uses the START value (START value) transmitted from the UE 60 last time to set the confidentiality in the MAC.
- the START value is an initial value used for concealment setting of a circuit-switched call.
- the UTRAN 10 transmits a RADIO BEARER SETUP message including a RAB information for setup information element instructing establishment of a radio access bearer on the DCH.
- step 1105 the UE 60 performs DCH setting for establishing a DCH radio bearer according to the instruction of the RAB information for setup information element included in the received RADIO BEARER SETUP message.
- the START value is set and the confidential setting in the MAC using the START value is also performed.
- the UE 60 transmits a RADIO BEARER SETUP COMPLETE message including the set START value to the UTRAN 10.
- the UTRAN 10 updates the secret setting in the MAC using the START value transmitted from the UE 60 in Step 1107, and then transmits a RAB ASSIGNMENT RESPONSE message to the MSC 50 in Step 1108.
- HSPA High Speed Packet Access
- HSDPA High Speed Downlink Packet Access
- E-DCH Enhanced uplink DCH
- HS-DSCH Enhanced uplink DCH
- RLC UM TX Radio Link Control Unacknowledged Mode Transmission
- RLC UM RX RLC UM reception
- an RRC connection is established between the UE 60 and the UTRAN 10.
- step 1302 the MSC 50 transmits a RAB ASSIGNMENT REQUEST message instructing the UTRAN 10 to establish a radio access bearer on the E-DCH / HSDPA.
- step 1303 the UTRAN 10 secures and sets E-DCH / HSDPA resources. Further, in step 1304, the UTRAN 10 transmits a RADIO BEARER SETUP message including a RAB information for setup information element instructing establishment of a radio access bearer on the E-DCH / HSDPA.
- step 1305 the UE 60 performs E-DCH / HSDPA setting for establishing an E-DCH / HSDPA radio bearer according to the instruction of the RAB information for setup information element included in the received RADIO BEARER SETUP message.
- E-DCH / HSDPA setting setting of the START value and concealment setting in RLC using the START value are also performed.
- step 1306 the UE 60 transmits a RADIO BEARER SETUP COMPLETE message including the set START value to the UTRAN 10.
- the UTRAN 10 performs the secret setting in the RLC using the START value transmitted from the UE 60 in Step 1307, and then transmits a RAB ASSIGNMENT RESPONSE message to the MSC 50 in Step 1308.
- 3GPP TS 33.102, 6.6.3 and 6.6.4 3GPP TS 25.331 V7.6.0, 10.3.3.38 and 8.5.9 CHANGE REQUEST 25.331 CR CR3214
- a radio access bearer can be established in DCH or E-DCH / HSDPA, respectively.
- the radio access bearer is established on E-DCH / HSDPA, for example, if the UE 60 does not support CS voice over HSPA, circuit-switched calls cannot be transmitted / received on E-DCH / HSDPA. Therefore, in this case, the radio access bearer on the existing E-DCH / HSDPA is released and the radio access bearer is newly established on the DCH, that is, the radio access bearer is re-established from E-DCH / HSDPA to DCH. It is necessary to reconfigure.
- the radio access bearer can be reconfigured from E-DCH / HSDPA to DCH or from DCH to E-DCH / HSDPA. May be necessary.
- the circuit switched call is changed from E-DCH / HSDPA to DCH, or from DCH to E-DCH / HSDPA, You need to remap.
- Non-Patent Document 3 As described above, when a radio access bearer is reconstructed between DCH and E-DCH / HSDPA, it is necessary to newly set a START value. However, in Non-Patent Document 3, no proposal has been made for the method of setting the START value when the radio access bearer is reconstructed between DCH and E-DCH / HSDPA. There is a problem that it cannot be concealed.
- an object of the present invention is to provide a wireless communication system, a wireless communication apparatus, and an encryption method that can solve the above-described problems.
- the radio communication system of the present invention is a radio communication system comprising a radio access network and a radio communication device, wherein the radio communication device includes a radio access bearer for a circuit switched domain, a DCH, A controller configured to set an initial value used after the reconfiguration for encryption of the radio access bearer when reconstructing between the E-DCH of the uplink and the HSDPA of the downlink; A transmission / reception unit for transmitting the initial value used after the reconfiguration set in step 1 to the radio access network.
- the radio communication apparatus encrypts the radio access bearer when the radio access bearer for the circuit switching domain is reconstructed between the DCH and the uplink E-DCH and the downlink HSDPA.
- the encryption method of the present invention is an encryption method by a wireless communication apparatus, wherein a radio access bearer for a circuit switching domain is retransmitted between a DCH, an uplink E-DCH, and a downlink HSDPA.
- a setting step of setting an initial value used after the reconfiguration in the encryption of the radio access bearer, and the initial value used after the reconfiguration set in the radio access network And a transmitting step for transmitting.
- the radio communication bearer reconstructs the radio access bearer between the DCH, E-DCH and HSDPA, the initial value used for the radio access bearer encryption after the reconfiguration. And send to the wireless access network.
- both the radio communication device and the radio access network can perform encryption using a new initial value set in the radio communication device, The effect of being able to conceal correctly is acquired.
- FIG. 10 is a sequence diagram illustrating an example of overall operation when establishing a radio access bearer on E-DCH / HSDPA in a wireless communication system.
- FIG. 6 is a block diagram showing a configuration of a wireless communication apparatus according to first to fifth embodiments of the present invention. 5 is a flowchart for explaining the operation of the wireless communication apparatus according to the first embodiment of the present invention.
- FIG. 10 is a sequence diagram illustrating an example of overall operation when a radio access bearer is reconfigured from DCH to E-DCH / HSDPA in a radio communication system.
- FIG. 10 is a sequence diagram illustrating an example of overall operation when a radio access bearer is reconfigured from E-DCH / HSDPA to DCH in a wireless communication system. It is a flowchart explaining operation
- FIG. 10 is a sequence diagram illustrating another example of the overall operation when a radio access bearer is reconfigured from DCH to E-DCH / HSDPA in a radio communication system. It is a flowchart explaining operation
- wireless communication apparatus which concerns on the 5th Embodiment of this invention.
- the UE 60 when reconfiguring the radio access bearer between the DCH and the E-DCH / HSDPA, uses a new START that is an initial value used for concealment setting of a circuit-switched call.
- a control unit 61 for setting a value and a transmission / reception unit 62 for transmitting a new START value set by the control unit 61 to the UTRAN 10 are provided.
- step 201 when the control unit 61 reconstructs the radio access bearer between the DCH and the E-DCH / HSDPA, a new START value used for concealment setting of a circuit-switched call. Set.
- step 202 the transmission / reception unit 62 transmits the new START value set by the control unit 61 to the UTRAN 10.
- both UE 60 and UTRAN 10 can perform the secret setting using the new initial value set in UE 60.
- the effect of being able to conceal correctly is acquired.
- the UE 60 according to the present embodiment is an example in which the operation of the first embodiment shown in FIG. 6 is made more specific, and the configuration itself is the same as that of the first embodiment.
- the control unit 61 when reconfiguring the radio access bearer between the DCH and E-DCH / HSDPA, the control unit 61 generally calculates the START value before releasing the existing radio bearer resources. An operation of setting the START value thus set to a new START value is performed.
- step 301 a radio access bearer is established on the DCH by the operation shown in FIG. 3, and the circuit-switched call is mapped on the DCH.
- step 302 the UTRAN 10 determines to remap the circuit-switched call from the DCH to the E-DCH / HSDPA.
- the UTRAN 10 secures and sets E-DCH / HSDPA resources. Further, in step 304, the UTRAN 10 receives a radio bearer setup (RADIO BEARER SETUP) message including an information element of radio access bearer setup information (RAB information for setup) instructing establishment of a radio access bearer on E-DCH / HSDPA. Send.
- RADIO BEARER SETUP radio bearer setup
- RAB information for setup an information element of radio access bearer setup information
- step 305 the UE 60 releases the existing DCH resource and establishes the E-DCH / HSDPA radio bearer according to the instruction of the RAB information for setup information element included in the received RADIO BEARER SETUP message.
- -Set DCH / HSDPA In this E-DCH / HSDPA setting, setting of the START value and concealment setting in RLC using the START value are also performed.
- step 306 the UE 60 transmits a radio bearer setup completion (RADIO BEARER SETUP COMPLETE) message including the set START value to the UTRAN 10.
- RADIO BEARER SETUP COMPLETE radio bearer setup completion
- UTRAN 10 uses the START value transmitted from UE 60 in step 307 to perform concealment setting in RLC, and then in step 308, radio access bearer assignment response (RAB ASSIGNMENT RESPONSE) message to MSC 50. Send.
- RAB ASSIGNMENT RESPONSE radio access bearer assignment response
- step 401 a radio access bearer is established on E-DCH / HSDPA by the operation shown in FIG. 5, and a circuit-switched call is mapped on E-DCH / HSDPA. It is assumed that
- the UTRAN 10 determines to remap the circuit-switched call from the E-DCH / HSDPA to the DCH in Step 402.
- the UTRAN 10 secures and sets the DCH resource, and performs the secret setting in the MAC using the START value transmitted from the UE 60 last time. Further, in step 404, the UTRAN 10 transmits a RADIO BEARER SETUP message including an RAB information for setup information element instructing establishment of a radio access bearer on the DCH.
- step 405 the UE 60 releases the existing E-DCH / HSDPA resources and establishes the DCH radio bearer according to the instruction of the RAB information for setup information element included in the received RADIO BEARER SETUP message. Set up. In this DCH setting, the START value is set and the confidential setting in the MAC using the START value is also performed. Further, in step 406, the UE 60 transmits a RADIO BEARER SETUP COMPLETE message including the set START value to the UTRAN 10.
- step 407 the UTRAN 10 updates the secret setting in the MAC using the START value transmitted from the UE 60, and then transmits a RAB ASSIGNMENT RESPONSE message to the MSC 50 in step 408.
- step 501 the control unit 61 performs DCH from the E-DCH / HSDPA of the radio access bearer based on the RAB information for setup information element included in the RADIO BEARER SETUP message received from the UTRAN 10. It is determined whether or not the condition 1 that the reconstruction is from the DCH or the reconstruction from the DCH to the E-DCH / HSDPA is satisfied. 8 and corresponding to steps 305 and 405 in FIG. 9), if not satisfied, the process proceeds to step 507 (the subsequent processing corresponds to steps 1105 and 1305 in FIGS. 3 and 5).
- the RADIO BEARER SETUP message indicates reconstruction and it is determined that Condition 1 is satisfied.
- step 502 the control unit 61 does not currently have a TM radio bearer for the core network domain (CN domain) specified by the core network domain ID (CN domain identity) information element included in the RADIO BEARER SETUP message.
- CN domain core network domain ID
- the CN domain specified by the CN domain identity information element included in the RADIO BEARER SETUP message is a circuit switching domain. Furthermore, satisfying condition 2 is that a RADIO BEARER SETUP message is sent from E-DCH / HSDPA to DCH in the absence of a radio access bearer for the circuit switched domain established for UE 60 and mapped to DCH. Indicates that the reconstruction of
- Step 503 the control unit 61 satisfies the condition 3 that at least one RLC-AM (RLC Acknowledged Mode) or RLC-UM (RLC Unacknowledged Mode) radio bearer is included in the RB information to setup information element. If the condition 3 is satisfied, the process proceeds to step 504 where a new START value is set. If not, the process proceeds to step 505.
- satisfying condition 3 means that the RADIO BEARER SETUP message indicates the reconfiguration from DCH to E-DCH / HSDPA.
- step 504 the control unit 61 calculates a START value using a variable such as count-C that has been used for the concealment setting before the reconstruction, and sets the calculated START value as a new START value.
- the calculated START value is stored in a storage unit (not shown) as a new START value.
- a method for calculating the START value for example, the method described in Non-Patent Document 2 can be used.
- step 505 the control unit 61 releases existing radio bearer resources. Specifically, PDCP (Packet Data Convergence Protocol) and RLC entities used for existing radio bearers are released, and sub-flows of radio access bearers related to existing radio bearers are released.
- PDCP Packet Data Convergence Protocol
- RLC entities used for existing radio bearers are released, and sub-flows of radio access bearers related to existing radio bearers are released.
- control unit 61 uses the START value stored in the storage unit at that time to establish the radio bearer indicated by the RAB information for setup information element.
- steps 507 to 509 performed when the condition 1 is not satisfied in step 501 is the same as that in steps 502 to 504 described above.
- the START value is calculated before releasing the existing radio bearer resource, and the calculated START value is set to a new START value.
- the effect that the circuit-switched call can be properly concealed can be obtained.
- the START value is calculated before releasing the existing radio bearer resource
- the START value is set in consideration of variables such as the count-C used for the concealment setting before the reconstruction. The effect that it can be also obtained.
- the UE 60 according to the present embodiment is another example in which the operation of the first embodiment shown in FIG. 6 is made more specific, and the configuration itself is the same as that of the first embodiment.
- the control unit 61 when the radio access bearer is reconstructed between DCH and E-DCH / HSDPA, the control unit 61 generally starts the START value previously transmitted to the UTRAN 10 before releasing the existing radio bearer resources. Is set to a new START value.
- step 504 the control unit 61 sets the START value transmitted last time to the UTRAN 10 (the latest START value held by the UTRAN 10) as a new START value. Further, the previously transmitted START value is stored in a storage unit (not shown) as a new START value.
- the START value transmitted last time to the UTRAN 10 is set to the new START value before releasing the existing radio bearer resource. Similar to the embodiment, there is an effect that the circuit-switched call can be properly concealed.
- the UE 60 and the UTRAN 10 before the UTRAN 10 receives the RADIO BEARER SETUP COMPLETE message.
- Both of the UE 60 and the UTRAN 10 can perform the secret setting using the same START value for the data of the circuit-switched call transmitted / received between the UE 60 and the UTRAN 10. That is, it is possible to easily synchronize the secret setting of the circuit-switched call immediately after the radio access bearer is reconstructed.
- the UE 60 according to the present embodiment is still another example in which the operation of the first embodiment shown in FIG. 6 is more concrete, and the configuration itself is the same as that of the first embodiment.
- the control unit 61 calculates the START value after releasing the existing radio bearer resources. The operation of setting the new START value to a new START value is performed.
- step 601 the control unit 61 performs DCH from the E-DCH / HSDPA of the radio access bearer based on the RAB information for setup information element included in the RADIO BEARER SETUP message received from the UTRAN 10. It is determined whether or not the condition 1 that is the reconstruction from the DCH or the reconstruction from the DCH to the E-DCH / HSDPA is satisfied. 8 and corresponding to steps 305 and 405 in FIG. 9), if not satisfied, the process proceeds to step 607 (the subsequent processing corresponds to steps 1105 and 1305 in FIGS. 3 and 5).
- the RADIO BEARER SETUP The message indicates reconstruction, and it is determined that the condition 1 is satisfied.
- step 602 the control unit 61 releases existing radio bearer resources. Specifically, the PDCP and RLC entities used for the existing radio bearer are released, and the radio access bearer subflow related to the existing radio bearer is released.
- the control unit 61 does not currently have a TM radio bearer for the CN domain specified by the CN domain identity information element included in the RADIO BEARER SETUP message, and has at least one TM radio bearer.
- the CN domain specified by the CN domain identity information element included in the RADIO BEARER SETUP message that is, the CN domain specified by the RADIO BEARER SETUP message is a circuit switching domain.
- step 604 the control unit 61 determines whether or not the condition 3 that at least one RLC-AM or RLC-UM radio bearer is included in the RB information to setup information element is satisfied. If satisfied, the process proceeds to step 605 in which a new START value is set. If not satisfied, the process proceeds to step 606.
- step 605 the control unit 61 calculates a START value, and sets the calculated START value as a new START value.
- the calculated START value is stored in a storage unit (not shown) as a new START value.
- control unit 61 uses the START value stored in the storage unit at that time to establish the radio bearer indicated by the RAB information for setup information element.
- steps 607 to 609 performed when the condition 1 is not satisfied in step 601 is the same as that in steps 502 to 504 in FIG.
- the UE 60 according to the present embodiment is still another example in which the operation of the first embodiment shown in FIG. 6 is more concrete, and the configuration itself is the same as that of the first embodiment.
- the control unit 61 sets a new START value before releasing existing radio bearer resources. Perform the operation. Further, when setting a new START value, the control unit 61 sets the START value by the method of the second or third embodiment described above, depending on whether or not a predetermined condition is satisfied. I do.
- step 701 it is assumed that a radio access bearer is established on the DCH by the operation shown in FIG. 3, and the circuit-switched call is mapped on the DCH.
- step 702 the UTRAN 10 determines to remap the circuit-switched call from the DCH to the E-DCH / HSDPA.
- the UTRAN 10 secures and configures E-DCH / HSDPA resources, and performs concealment setting in RLC using the START value transmitted from the UE 60 last time. Further, in step 704, the UTRAN 10 transmits a RADIO BEARER SETUP message including a RAB information for setup information element instructing establishment of a radio access bearer on the E-DCH / HSDPA.
- step 705 the UE 60 releases the existing DCH resource and establishes the E-DCH / HSDPA radio bearer according to the instruction of the RAB information for setup information element included in the received RADIO BEARER SETUP message. -Set DCH / HSDPA. In this E-DCH / HSDPA setting, setting of the previous START value to a new START value and concealment setting in RLC using the START value are also performed.
- step 706 the UE 60 transmits a RADIO BEARER SETUP COMPLETE message including the set START value to the UTRAN 10.
- step 707 the UTRAN 10 updates the confidential setting in the RLC using the START value transmitted from the UE 60, if necessary. That is, when the START value transmitted from the UE 60 is the same as the previous value, it is not always necessary to update the confidential setting.
- step 708 the UTRAN 10 transmits an RAB ASSIGNMENT RESPONSE message to the MSC 50.
- Step 801 is performed when Condition 2 is satisfied in Step 502.
- the control unit 61 calculates a START value and sets the calculated START value as a new START value.
- the calculated START value is stored in a storage unit (not shown) as a new START value.
- Step 802 is performed when the condition 3 is satisfied in Step 503.
- the control unit 61 sets the START value that was previously transmitted to the UTRAN 10 as a new START value. Further, the previously transmitted START value is stored in a storage unit (not shown) as a new START value.
- the START value transmitted last time to the UTRAN 10 is set to the new START value before releasing the existing radio bearer resource. Similar to the embodiment, there is an effect that the circuit-switched call can be properly concealed.
- both the UE 60 and the UTRAN 10 immediately after the radio access bearer reconstruction as in the third embodiment.
- the method of setting the calculated START value to a new START value is obtained, it is easy to synchronize the secret setting of the circuit-switched call.
- the 3GPP wireless communication system has been described as an example.
- the wireless communication system, the wireless communication apparatus, and the encryption method according to the first to fifth embodiments are circuit switched.
- the wireless access bearer of the domain can also be applied to other wireless communication systems that reconstruct between communication channels with different concealment setting methods (for example, variables).
- both the wireless communication device and the wireless access network can perform the confidential setting by using the new initial value set by the wireless communication device, so that the circuit-switched call can be correctly concealed. The effect is obtained.
- the operation of setting a new START value before releasing the existing radio bearer resource has been described.
- the existing START value is set. It is also possible to set a new START value after releasing the radio bearer resources.
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Abstract
Description
3GPP TS 33.102, 6.6.3および6.6.4 3GPP TS 25.331 V7.6.0, 10.3.3.38および8.5.9 CHANGE REQUEST 25.331 CR CR3214
図6に示すように、本実施形態に係るUE60は、無線アクセスベアラをDCHとE-DCH/HSDPAとの間で再構築する場合、回線交換呼の秘匿設定に用いる初期値である新たなSTART値を設定する制御部61と、制御部61にて設定された新たなSTART値をUTRAN10に送信する送受信部62と、を有している。
本実施形態に係るUE60は、図6に示した第1の実施形態の動作をより具体化した一例であり、構成自体は第1の実施形態と同様である。
最初に、本実施形態の無線通信システムの全体動作について説明する。なお、無線アクセスベアラをDCH上に確立する場合およびE-DCH/HSDPA上に確立する場合の全体動作は、それぞれ図3および図5に示したものと同様であるため、ここでは、無線アクセスベアラをDCHとE-DCH/HSDPAとの間で再構築する場合の全体動作についてのみ説明する。
続いて、本実施形態に係るUE60の動作を、図10を参照して説明する。ここでは、図3、図5、図8、図9のステップ1105,1305,305,405に相当する動作について説明する。
本実施形態に係るUE60は、図6に示した第1の実施形態の動作をより具体化した他の例であり、構成自体は第1の実施形態と同様である。
本実施形態に係るUE60の動作は、図10に示したものと、ステップ504の処理以外は同様である。そのため、ここでは、ステップ504の処理のみ説明する。
本実施形態に係るUE60は、図6に示した第1の実施形態の動作をより具体化したさらに他の例であり、構成自体は第1の実施形態と同様である。
本実施形態に係るUE60の動作を、図11を参照して説明する。ここでは、図3、図5、図8、図9のステップ1105,1305,305,405に相当する動作を説明する。
本実施形態に係るUE60は、図6に示した第1の実施形態の動作をより具体化したさらに別の例であり、構成自体は第1の実施形態と同様である。
最初に、本実施形態の無線通信システムの全体動作について説明する。なお、無線通信システムの全体動作は、第2の実施形態と同じく、図3、図5、図8、図9に示したものと同様である。ただし、無線アクセスベアラをDCHからE-DCH/HSDPAに再構築するに際して、第3の実施形態の方法でSTART値を設定する点で、第2の実施形態の全体動作(図8)と異なる。そのため、ここでは、この場合の全体動作のみ、図12を参照して説明する。
続いて、本実施形態に係るUE60の動作を、図13を参照して説明する。本実施形態に係るUE60の動作は、図10に示したものと比較して、ステップ504を、ステップ801,802に変更した点のみが異なり、それ以外は同様である。そのため、ここでは、ステップ801,802の処理のみ説明する。
Claims (39)
- 無線アクセスネットワークと、無線通信装置と、を有してなる無線通信システムであって、
前記無線通信装置は、
回線交換ドメインのための無線アクセスベアラを、DCHと、上り回線のE-DCHおよび下り回線のHSDPAと、の間で再構築する場合に、前記無線アクセスベアラの暗号化に、前記再構築後に使用される初期値を設定する制御部と、
前記制御部にて設定された前記再構築後に使用される前記初期値を、前記無線アクセスネットワークに送信する送受信部と、を有する無線通信システム。 - 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記再構築後に使用される前記初期値を、前記再構築前に前記無線アクセスベアラの暗号化に使用されていた変数を用いて計算する、請求項1に記載の無線通信システム。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記無線アクセスネットワークに前回送信した初期値を前記再構築後に使用される前記初期値に設定する、請求項1に記載の無線通信システム。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、予め決められた第一の条件を満たせば、計算した初期値を前記再構築後に使用される前記初期値に設定し、予め決められた第二の条件を満たせば、前記無線アクセスネットワークに前回送信した初期値を前記再構築後に使用される前記初期値に設定する、請求項1に記載の無線通信システム。
- 前記第一の条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージが指定するコアネットワークドメインのためのTMの無線ベアラが現在存在せず、かつ、前記無線ベアラセットアップメッセージに少なくとも1つのTMの無線ベアラが含まれていることであり、
前記第二の条件は、前記無線アクセスネットワークから受信した前記無線ベアラセットアップメッセージにRLC-AMまたはRLC-UMの無線ベアラが含まれていることである、請求項4に記載の無線通信システム。 - 前記第一の条件は、前記無線通信装置のために確立され、DCHにマッピングされた回線交換ドメインのための無線アクセスベアラが存在しない状態で、E-DCHおよびHSDPAからDCHへの再構築をすることであり、
前記第二の条件は、前記無線アクセスベアラを、DCHからE-DCHおよびHSDPAに再構築することである、請求項4に記載の無線通信システム。 - 前記制御部は、前記無線アクセスベアラを再構築する場合に、予め決められた条件を満たしたときに、前記再構築後に使用される前記初期値の設定を行う、請求項1から3のいずれか1項に記載の無線通信システム。
- 前記条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージが指定するコアネットワークドメインのためのTMの無線ベアラが現在存在せず、かつ、前記無線ベアラセットアップメッセージに少なくとも1つのTMの無線ベアラが含まれていることである、請求項7に記載の無線通信システム。
- 前記条件は、前記無線通信装置のために確立され、DCHにマッピングされた回線交換ドメインのための無線アクセスベアラが存在しない状態で、E-DCHおよびHSDPAからDCHへの再構築をすることである、請求項7に記載の無線通信システム。
- 前記条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージにRLC-AMまたはRLC-UMの無線ベアラが含まれていることである、請求項7に記載の無線通信システム。
- 前記条件は、前記無線アクセスベアラを、DCHからE-DCHおよびHSDPAに再構築することである、請求項7に記載の無線通信システム。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記再構築前に使用されていた無線ベアラリソースを解放する前に、前記再構築後に使用される前記初期値の設定を行う、請求項1から11のいずれか1項に記載の無線通信システム。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記再構築前に使用されていた無線ベアラリソースを解放した後に、前記再構築後に使用される前記初期値の設定を行う、請求項1から11のいずれか1項に記載の無線通信システム。
- 回線交換ドメインのための無線アクセスベアラを、DCHと、上り回線のE-DCHおよび下り回線のHSDPAと、の間で再構築する場合に、前記無線アクセスベアラの暗号化に、前記再構築後に使用される初期値を設定する制御部と、
前記制御部にて設定された前記再構築後に使用される前記初期値を、無線アクセスネットワークに送信する送受信部と、を有する無線通信装置。 - 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記再構築後に使用される前記初期値を、前記再構築前に前記無線アクセスベアラの暗号化に使用されていた変数を用いて計算する、請求項14に記載の無線通信装置。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記無線アクセスネットワークに前回送信した初期値を前記再構築後に使用される前記初期値に設定する、請求項14に記載の無線通信装置。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、予め決められた第一の条件を満たせば、計算した初期値を前記再構築後に使用される前記初期値に設定し、予め決められた第二の条件を満たせば、前記無線アクセスネットワークに前回送信した初期値を前記再構築後に使用される前記初期値に設定する、請求項14に記載の無線通信装置。
- 前記第一の条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージが指定するコアネットワークドメインのためのTMの無線ベアラが現在存在せず、かつ、前記無線ベアラセットアップメッセージに少なくとも1つのTMの無線ベアラが含まれていることであり、
前記第二の条件は、前記無線アクセスネットワークから受信した前記無線ベアラセットアップメッセージにRLC-AMまたはRLC-UMの無線ベアラが含まれていることである、請求項17に記載の無線通信装置。 - 前記第一の条件は、前記無線通信装置のために確立され、DCHにマッピングされた回線交換ドメインのための無線アクセスベアラが存在しない状態で、E-DCHおよびHSDPAからDCHへの再構築をすることであり、
前記第二の条件は、前記無線アクセスベアラを、DCHからE-DCHおよびHSDPAに再構築することである、請求項17に記載の無線通信装置。 - 前記制御部は、前記無線アクセスベアラを再構築する場合に、予め決められた条件を満たしたときに、再構築後に使用される前記初期値の設定を行う、請求項14から16のいずれか1項に記載の無線通信装置。
- 前記条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージが指定するコアネットワークドメインのためのTMの無線ベアラが現在存在せず、かつ、前記無線ベアラセットアップメッセージに少なくとも1つのTMの無線ベアラが含まれていることである、請求項20に記載の無線通信装置。
- 前記条件は、前記無線通信装置のために確立され、DCHにマッピングされた回線交換ドメインのための無線アクセスベアラが存在しない状態で、E-DCHおよびHSDPAからDCHへの再構築をすることである、請求項20に記載の無線通信装置。
- 前記条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージにRLC-AMまたはRLC-UMの無線ベアラが含まれていることである、請求項20に記載の無線通信装置。
- 前記条件は、前記無線アクセスベアラを、DCHからE-DCHおよびHSDPAに再構築することである、請求項20に記載の無線通信装置。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記再構築前に使用されていた無線ベアラリソースを解放する前に、前記再構築後に使用される前記初期値の設定を行う、請求項14から24のいずれか1項に記載の無線通信装置。
- 前記制御部は、前記無線アクセスベアラを再構築する場合に、前記再構築前に使用されていた無線ベアラリソースを解放した後に、前記再構築後に使用される前記初期値の設定を行う、請求項14から24のいずれか1項に記載の無線通信装置。
- 無線通信装置による暗号化方法であって、
回線交換ドメインのための無線アクセスベアラを、DCHと、上り回線のE-DCHおよび下り回線のHSDPAと、の間で再構築する場合に、前記無線アクセスベアラの暗号化に、前記再構築後に使用される初期値を設定する設定ステップと、
前記設定された前記再構築後に使用される前記初期値を、無線アクセスネットワークに送信する送信ステップと、を有する暗号化方法。 - 前記設定ステップでは、前記無線アクセスベアラを再構築する場合に、前記再構築後に使用される前記初期値を、前記再構築前に前記無線アクセスベアラの暗号化に使用されていた変数を用いて計算する、請求項27に記載の暗号化方法。
- 前記設定ステップでは、前記無線アクセスベアラを再構築する場合に、前記無線アクセスネットワークに前回送信した初期値を前記再構築後に使用される前記初期値に設定する、請求項27に記載の暗号化方法。
- 前記設定ステップでは、前記無線アクセスベアラを再構築する場合に、予め決められた第一の条件を満たせば、計算した初期値を前記再構築後に使用される前記初期値に設定し、予め決められた第二の条件を満たせば、前記無線アクセスネットワークに前回送信した初期値を前記再構築後に使用される前記初期値に設定する、請求項27に記載の暗号化方法。
- 前記第一の条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージが指定するコアネットワークドメインのためのTMの無線ベアラが現在存在せず、かつ、前記無線ベアラセットアップメッセージに少なくとも1つのTMの無線ベアラが含まれていることであり、
前記第二の条件は、前記無線アクセスネットワークから受信した前記無線ベアラセットアップメッセージにRLC-AMまたはRLC-UMの無線ベアラが含まれていることである、請求項30に記載の暗号化方法。 - 前記第一の条件は、前記無線通信装置のために確立され、DCHにマッピングされた回線交換ドメインのための無線アクセスベアラが存在しない状態で、E-DCHおよびHSDPAからDCHへの再構築をすることであり、
前記第二の条件は、前記無線アクセスベアラを、DCHからE-DCHおよびHSDPAに再構築することである、請求項30に記載の暗号化方法。 - 前記設定ステップでは、前記無線アクセスベアラを再構築する場合に、予め決められた条件を満たしたときに、前記再構築後に使用される前記初期値の設定を行う、請求項27から29のいずれか1項に記載の暗号化方法。
- 前記条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージが指定するコアネットワークドメインのためのTMの無線ベアラが現在存在せず、かつ、前記無線ベアラセットアップメッセージに少なくとも1つのTMの無線ベアラが含まれていることである、請求項33に記載の暗号化方法。
- 前記条件は、前記無線通信装置のために確立され、DCHにマッピングされた回線交換ドメインのための無線アクセスベアラが存在しない状態で、E-DCHおよびHSDPAからDCHへの再構築をすることである、請求項33に記載の暗号化方法。
- 前記条件は、前記無線アクセスネットワークから受信した無線ベアラセットアップメッセージにRLC-AMまたはRLC-UMの無線ベアラが含まれていることである、請求項33に記載の暗号化方法。
- 前記条件は、前記無線アクセスベアラを、DCHからE-DCHおよびHSDPAに再構築することである、請求項33に記載の暗号化方法。
- 前記設定ステップでは、前記無線アクセスベアラを再構築する場合に、前記再構築前に使用されていた無線ベアラリソースを解放する前に、前記再構築後に使用される前記初期値の設定を行う、請求項27から37のいずれか1項に記載の暗号化方法。
- 前記設定ステップでは、前記無線アクセスベアラを再構築する場合に、前記再構築前に使用されていた無線ベアラリソースを解放した後に、前記再構築後に使用される前記初期値の設定を行う、請求項27から37のいずれか1項に記載の暗号化方法。
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ES08865969.3T ES2560873T3 (es) | 2007-12-27 | 2008-12-26 | Sistema de radiocomunicación, dispositivo de radiocomunicación y método de cifrado |
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