WO2009096121A1 - 無線通信システム、基地局装置、ゲートウェイ装置、無線通信方法 - Google Patents
無線通信システム、基地局装置、ゲートウェイ装置、無線通信方法 Download PDFInfo
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- WO2009096121A1 WO2009096121A1 PCT/JP2008/073352 JP2008073352W WO2009096121A1 WO 2009096121 A1 WO2009096121 A1 WO 2009096121A1 JP 2008073352 W JP2008073352 W JP 2008073352W WO 2009096121 A1 WO2009096121 A1 WO 2009096121A1
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- base station
- information
- wireless communication
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- station device
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- 238000004891 communication Methods 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims description 58
- 230000005540 biological transmission Effects 0.000 claims description 117
- 238000012546 transfer Methods 0.000 claims description 16
- 241000760358 Enodes Species 0.000 description 343
- 238000012545 processing Methods 0.000 description 39
- 238000010586 diagram Methods 0.000 description 24
- 238000012423 maintenance Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/126—Applying verification of the received information the source of the received data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
- H04W12/106—Packet or message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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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
- H04W88/08—Access point devices
Definitions
- the present invention relates to a wireless communication system, a base station device, a gateway device, and a wireless communication method.
- EUTRAN Evolved UMTS Terrestrial Radio Access Network
- UMTS Universal Mobile Telecommunication System
- EPC Evolved Packet Core
- LTE Long Term Evolution
- SAE System Architecture Evolution
- EUTRAN and EPC are sometimes referred to as EPS (Evolved Packet System).
- an eNode B (evolved Node B) 10 that is a base station apparatus is provided on the EUTRAN side.
- CN Core Network
- MME Mobility Management Entity
- S-GW Serving Gateway
- P-GW Serving Gateway
- Packet Data Network Gateway (40) and HSS Home Subscriber Server
- the eNode B 10 is connected to a UE (User Equipment) 60 that is a radio communication device via a radio interface.
- the MME 20 is a node having a mobility control (location registration) function of the UE 60, a handover control function, a selection function of the S-GW 30 and the P-GW 40, a bearer management function, and the like (4.4. 2).
- the S-GW 30 is a node for transferring user plane packet data between the eNode B 10 and the P-GW 40.
- the HSS 50 is a server that stores user information used for authentication of the UE 60.
- the S-GW 30 needs to know the originating address of the eNode B 10 in order to confirm the safety of the uplink packet data from the eNode B 10. .
- the S-GW 30 As a method for the S-GW 30 to know the originating address of the eNode B 10, it is conceivable that the originating address of the eNode B 10 is set in the S-GW 30 manually by a maintenance person (operator) in advance. However, since manual setting by the maintenance personnel is very complicated, there is a problem that, when many eNode Bs 10 are installed, there is a possibility that OPEX (Operation Expenditure) may increase.
- OPEX Operaation Expenditure
- the S-GW 30 transmits the received packet data as it is to the P-GW 40 of the upper node without confirming the originating address of the eNode B 10.
- the source eNode B 10 of the UE 60 at the time of handover is referred to as a Source eNode B 10-S
- the destination eNode B 10 is referred to as a Target eNode B 10-T (hereinafter the same).
- Step 2301. since the UE 60 has moved from the area of the Source eNode B 10-S to the area of the Target eNode B 10-T, it is assumed that the Source eNode B 10-S makes a handover decision (HO decision) in Step 2301. .
- Step 2302 the Source eNode B 10-S transmits a message requesting handover (Handover Request message) to the Target eNode B 10-T.
- the Target eNode B 10-T transmits a response message (Handover Response message) to the Handover Request message to the Source eNode B 10-S in Step 2304.
- the source eNode B 10-S transmits a message (Handover Command message) instructing handover to the UE 60.
- the UE 60 transmits uplink packet data in Step 2307.
- the S-GW30 receives packet data from the Target eNode B10-T, it does not know the originating address of the Target eNode B10-T, so it ignores the security and confirms the originating address of the Target eNode B10-T. Instead, the received packet data is transmitted to the P-GW 40 as it is.
- DoS attack Delivery of Service attack
- the Target eNode B 10-T requests a path switch request (Path Switch Request) in Step 2309. Message) to the MME 20, and in step 2310, the MME 20 transmits a message (User Plane Update Request message) requesting user plane update to the S-GW 30.
- the S-GW 30 performs downlink path switching from the Source eNode B 10 -S to the Target eNode B 10 -T.
- the S-GW 30 transmits a response message (User Plan Update Response message) to the User Plane Update Request message to the MME 20.
- the MME 20 transmits a response message (Path Switch Request Acknowledge message) to the message requesting path switching to the Target eNode B 10-T, and the Target eNode B 10-T displays a message indicating resource release (Step 2314). (Release Resource message) is transmitted to the Source eNode B 10-S.
- the S-GW 30 it is necessary to confirm the safety of the packet data received from the Target eNode B 10-T to the S-GW 30 even when a handover occurs. It is necessary for the S-GW 30 to know the originating address of the Target eNode B10-T. However, if the eNode B 10 source address is set in the S-GW 30 manually by the maintenance person, there is a possibility that OPEX will increase.
- the security problem is important in the roaming environment of the UE 60.
- the eNode B 10, the MME 20, and the S-GW 30 are also provided in the roaming destination outside network (Visit PLMN) of the UE 60.
- the S-GW 30 of the external network and the P-GW 40 of the own network are usually connected via a public network.
- the public network is, for example, a public internet network.
- the P-GW 40 when the P-GW 40 receives packet data from the public network and transfers the packet data to the own network without confirming the safety of the packet data, the packet data at risk of DoS attack spreads in the own network. May cause serious problems such as system failure.
- the P-GW 40 collates the source address of the packet data received from the public network with the source address of the S-GW 30 that transmitted the packet data, confirms safety, and then receives the received packet data. Must be transferred into the network.
- the P-GW 40 needs to know the source address of the S-GW 30, but when a handover involving the change of the S-GW 30 occurs in a roaming environment, the source address of the changed S-GW 30 is set. I can't know.
- the S-GW 30 of the UE 60 roaming destination to the P-GW 40 of the own network. Therefore, it is necessary to confirm the security of the received packet data, and for this purpose, the P-GW 40 needs to know the changed originating address of the S-GW 30. However, if the originating address of the S-GW 30 is set in the P-GW 40 manually by a maintenance person, there is a possibility that OPEX will increase.
- an object of the present invention is to provide a wireless communication system, a base station device, a gateway device, and a wireless communication method that can solve the above-described problems.
- the first wireless communication system of the present invention includes: A wireless communication system comprising a base station device, a mobile control node, and a gateway device,
- the base station device Information on the originating address of a base station device in the vicinity of the base station device is transmitted to the mobility control node,
- the mobility control node is From the base station device, receiving information of the originating address of the neighboring base station device, Sending information of the originating address of the neighboring base station device to the gateway device,
- the gateway device is Information on the originating address of the neighboring base station apparatus is received from the mobile control node.
- the second wireless communication system of the present invention is A wireless communication system comprising a base station device and a gateway device,
- the base station device Packet data including in the header information of the originating address of a base station device in the vicinity of the base station device is transmitted to the gateway device;
- the gateway device is From the base station apparatus, packet data including header information of the originating address of the neighboring base station apparatus is received.
- the third wireless communication system of the present invention is A wireless communication system comprising a base station device, a mobile control node, and a gateway device,
- the base station device The wireless communication device transmits information on the originating address of the destination base station device that has been handed over from the base station device, to the mobility control node,
- the mobility control node is From the base station apparatus, information on the originating address of the destination base station apparatus is received, Sending information of the originating address of the destination base station device to the gateway device,
- the gateway device is Information on the originating address of the destination base station apparatus is received from the mobility control node.
- the fourth wireless communication system of the present invention is A wireless communication system comprising a base station device, a mobile control node, a gateway device connected to the base station device, and an upper gateway device connected to the gateway device,
- the gateway device is After the wireless communication device has decided to perform a handover with a change to the gateway device, information on the originating address of the gateway device is transmitted to the upper gateway device,
- the upper gateway device is: Information on the originating address of the gateway device is received from the gateway device.
- the first base station apparatus of the present invention is It has a transmission part which transmits the information of the origination address of the base station apparatus of the vicinity of an own base station apparatus to a gateway apparatus via a movement control node.
- the second base station apparatus of the present invention It has a transmission part which transmits the packet data which contains the information of the origination address of the base station apparatus of the vicinity of an own base station apparatus in a header to a gateway apparatus.
- the third base station apparatus of the present invention The wireless communication apparatus includes a transmission unit that transmits information of a source address of a destination base station apparatus handed over from the base station apparatus to the gateway apparatus via the movement control node.
- the first gateway device of the present invention is: It has a receiving part which receives the information of the origination address of the base station apparatus of the vicinity of the said base station apparatus via a movement control node from a base station apparatus.
- the second gateway device of the present invention is A receiving unit configured to receive, from a base station device, packet data including a header of information on a source address of the neighboring base station device of the base station device;
- the third gateway device of the present invention is The wireless communication device includes a receiving unit that receives information on the originating address of the destination base station device that has been handed over from the base station device via the mobility control node from the base station device.
- the fourth gateway device of the present invention is A gateway device connected between the base station device and the upper gateway device,
- the wireless communication apparatus includes a transmission unit that transmits information on the originating address of the gateway apparatus to the higher-level gateway apparatus after the wireless communication apparatus determines to perform a handover with a change to the gateway.
- the upper gateway apparatus of the present invention is An upper gateway device connected to a gateway device connected to the base station device,
- the wireless communication device includes a receiving unit that receives information on the originating address of the gateway device from the gateway device after the wireless communication device has decided to perform handover with the change to the gateway device.
- the first wireless communication method of the present invention includes: A wireless communication method by a base station device, A transmitting step of transmitting information on a source address of a base station device adjacent to the base station device to a gateway device via a mobility control node;
- the second wireless communication method of the present invention includes: A wireless communication method by a base station device, There is a transmission step of transmitting packet data including header information of origination addresses of base station devices in the vicinity of the base station device to the gateway device.
- the third wireless communication method of the present invention is: A wireless communication method by a base station device,
- the wireless communication apparatus includes a transmission step of transmitting information on the originating address of the destination base station apparatus handed over from the base station apparatus to the gateway apparatus via the mobility control node.
- the fourth wireless communication method of the present invention is: A wireless communication method using a gateway device, A receiving step of receiving information on a source address of a base station device adjacent to the base station device from the base station device via a mobile control node;
- the fifth wireless communication method of the present invention provides: A wireless communication method using a gateway device, A receiving step of receiving, from a base station device, packet data including in its header information on the originating address of the neighboring base station device of the base station device;
- a sixth wireless communication method of the present invention includes A wireless communication method using a gateway device,
- the wireless communication apparatus includes a reception step of receiving information on a source address of a movement-destination base station apparatus handed over from the base station apparatus via the movement control node from the base station apparatus.
- the seventh wireless communication method of the present invention is: A wireless communication method using a gateway device connected between a base station device and an upper gateway device, A transmission step of transmitting information on a source address of the gateway device to the higher-level gateway device after a decision to perform a handover with a change to the gateway device;
- the eighth wireless communication method of the present invention is: A wireless communication method by a gateway device connected to a gateway device connected to a base station device,
- the wireless communication apparatus includes a receiving step of receiving, from the gateway apparatus, information on an originating address of the gateway apparatus after the wireless communication apparatus has decided to perform a handover with a change to the gateway apparatus.
- a base station device can provide information on the originating address of a base station device in the vicinity of its own base station device, or information on the originating address of a destination base station device to which the wireless communication device has handed over. Is transmitted to the gateway device.
- the gateway device can confirm the safety of the packet data received from the base station device even if a handover occurs, the effect of ensuring the security of the wireless communication system can be obtained.
- the information of the originating address of the base station device is transmitted from the base station device to the gateway device, an effect that manual work by the maintenance person can be reduced is obtained.
- the gateway device when the wireless communication device performs handover with a change to its own gateway device, the gateway device transmits the information of the originating address of its own gateway device to the higher-level gateway device. It is configured to transmit.
- the upper gateway apparatus can confirm the safety of the packet data received from the gateway apparatus even if a handover occurs, the effect of ensuring the security of the wireless communication system can be obtained.
- the information of the originating address of the gateway device is transmitted from the gateway device to the higher-level gateway device, an effect that manual work by the maintenance person can be reduced is obtained.
- FIG. 1 is a block diagram showing a schematic configuration of a wireless communication system according to a first embodiment of the present invention. It is a block diagram which shows the detailed structure of the radio
- FIG. 6 is a sequence diagram for explaining a transmission operation example 1 of an eNode B calling address in the wireless communication system according to the first embodiment of the present invention.
- FIG. 6 is a sequence diagram illustrating an operation example 2 of transmission of an eNode B calling address in the wireless communication system according to the first embodiment of the present invention. It is a sequence diagram explaining the transmission operation example 3 of the calling address of eNodeB in the radio
- FIG. 5 is a sequence diagram illustrating a handover operation example 1 in the wireless communication system according to the first embodiment of this invention.
- FIG. 7 is a sequence diagram illustrating a handover operation example 2 in the wireless communication system according to the first embodiment of this invention.
- FIG. 7 is a sequence diagram illustrating a handover operation example 2 in the wireless communication system according to the first embodiment of this invention.
- FIG. 7 is a sequence diagram illustrating a handover operation example 3 in the wireless communication system according to the first embodiment of this invention.
- FIG. 7 is a sequence diagram illustrating a handover operation example 3 in the wireless communication system according to the first embodiment of this invention.
- It is a block diagram which shows schematic structure of the radio
- It is a block diagram which shows the detailed structure of the radio
- FIG. 10 is a sequence diagram illustrating an example of a handover operation in the wireless communication system according to the second embodiment of this invention. It is a figure explaining the GTP header which concerns on the 2nd Embodiment of this invention.
- the eNode B 10 includes a transmission unit 11A that transmits a message including information on the originating address of the neighboring eNode B 10 to the MME 20.
- the information of the origination address of neighboring eNode B10 can be considered to be manually set in the eNode B10 in advance by a maintenance person, for example, this is not restrictive.
- the MME 20 receives from the eNode B 10 a message including information on the originating address of the neighboring eNode B 10 and a receiving unit 21A that receives the information containing the originating address information of the neighboring eNode B 10 and the S-GW 30 And a transmitting unit 22A for transmitting to.
- the S-GW 30 includes a receiving unit 31A that receives a message including information on the originating address of the neighboring eNode B 10 from the MME 20.
- the eNode B 10 includes a receiving unit 12A and a control unit 13A in addition to the above-described transmitting unit 11A.
- 11 A of transmission parts perform the transmission process of the message and packet data to MME20, and perform the process which transmits the message containing the information of the origination address of neighboring eNode B10 to MME20 as mentioned above as an example .
- the receiving unit 12A performs processing for receiving messages and packet data from the MME 20.
- the control unit 13A performs processing for generating a message including information to be transmitted to the MME 20.
- transmission and reception of messages and packet data by the transmission unit 11A, the reception unit 12A, and the control unit 13A are also performed between the UE 60, other eNode Bs 10, and the S-GW 30.
- the MME 20 includes a control unit 23A in addition to the above-described reception unit 21A and transmission unit 22A.
- the reception unit 21A performs reception processing of messages and packet data from the eNode B 10 and the S-GW 30.
- the reception unit 21A includes information on the originating address of the neighboring eNode B 10 from the eNode B 10 as described above. Process to receive the message.
- the transmission unit 22A performs transmission processing of the message and packet data to the Node B 10 and the S-GW 30. As an example, the transmission unit 22A transmits a message including information on the originating address of the neighboring eNode B 10 as described above. Processing to transmit to the GW 30 is performed.
- the control unit 23A performs processing for generating a message including information to be transmitted to the eNode B 10 and the S-GW 30.
- the S-GW 30 includes a transmission unit 32A, a control unit 33A, and a storage unit 34A in addition to the reception unit 31A described above.
- the receiving unit 31A performs a process of receiving a message and packet data from the MME 20, and as an example thereof, as described above, a process of receiving a message including information on the originating address of the neighboring eNode B 10 from the MME 20. Do.
- the transmission unit 32A performs transmission processing of messages and packet data to the MME 20.
- the control unit 33A performs processing for generating a message including information to be transmitted to the MME 20, processing for storing information on the originating address of the neighboring eNode B 10 in the storage unit 34A, and the source address of the packet data received from the MME 20 in the storage unit 34A.
- a process for confirming the safety of the received packet data is performed by collating with the stored source address.
- transmission and reception of messages and packet data by the transmission unit 32A, the reception unit 31A, and the control unit 33A are also performed between the eNode B 10 and the P-GW 40.
- the eNode B 10 transmits information on the originating address of its own eNode B 10 and the originating address of the neighboring eNode B 10 to the S-GW 30 via the MME 20.
- “attach” refers to the first access to the eNode B 10 of the UE 60, for example, the first access after the power is turned on.
- step 301 the UE 60 transmits a message requesting attachment to the eNode B 10 (Attach Request message).
- the transmitter 11A of the eNode B 10 starts an attach procedure including information on the originating address of its own eNode B 10, the originating address of the neighboring eNode B 10, and the information of the Attach Request message.
- the attach start message (Initial UE Message message) is transmitted to the MME 20.
- the transmitting unit 22A of the MME 20 in step 304 the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10
- a message requesting bearer generation (Create Default Bearer Request message) including the above information is transmitted to the S-GW 30.
- information on the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10 is stored in the storage unit 34A by the control unit 33A.
- step 305 the transmitting unit 32A of the S-GW 30 requests a bearer generation message (Create Default Bearer Request message) including information on the originating address of its own S-GW 30 and the originating address of the neighboring S-GW 30. ) To the P-GW 40.
- a bearer generation message Create Default Bearer Request message
- step 306 the P-GW 40 transmits a response message (Create Default Bearer Response message) to the Create Default Bearer Request message to the S-GW 30.
- step 307 the transmission unit 32A of the S-GW 30 transmits a response message (Create Default Bearer Response message) to the MME 20 in response to a response message to the Create Default Bearer Request message.
- step 308 the transmission unit 22A of the MME 20 accepts the attachment (Attach Accept), and transmits a message requesting setup of the initial context of the UE 60 (Initial Context Setup Request message) to the eNode B 10.
- step 309 the transmission unit 11A of the eNode B 10 accepts the attachment and transmits a message requesting establishment of a radio bearer (Radio Bearer Establishment Request message) to the UE 60.
- Radio Bearer Establishment Request message Radio Bearer Establishment Request message
- step 310 the UE 60 transmits a response message (Radio Bearer Establishment Response message) to the Radio Bearer Establishment Request message to the eNode B 10. Further, in step 311, the transmission unit 11 ⁇ / b> A of the eNode B 10 transmits a response message (Initial UE Context Response message) to the Initial Context Setup Request message to the MME 20.
- a response message Radio Bearer Establishment Response message
- the control unit 33A of the S-GW 30 collates the source address of the received packet data with the source address stored in the storage unit 34A. If the storage unit 34A has a source address that matches the source address of the received packet data in the storage unit 34A, the control unit 33A determines that the received packet data is safe and transfers it to the P-GW 40 using the transmission unit 32A. If it is not in 34A, the received packet data is judged to be dangerous and discarded.
- the S-GW 30 transmits from the eNode B 10 via the MME 20 the originating address of the eNode B 10 and the originating eNode B 10 that may become the Target eNode B 10-T. Address information can be acquired.
- the S-GW 30 can confirm the safety of the packet data received from the eNode B 10 even if a handover occurs, the security of the wireless communication system can be ensured.
- the eNode B 10 address information is transmitted from the eNode B 10 to the S-GW 30, the manual work by the maintenance staff can be reduced.
- the MME 20 only needs to transfer the eNode B 10 address information received from the eNode B 10 to the S-GW 30, so there is no need to store the eNode B 10 address information.
- the MME 20 has an IP security function, and can determine whether the eNode B 10 is safe. That is, since the MME 20 can determine that it is a calling address notification from the secure eNode B 10, only the calling address notified from the safe eNode B 10 can be notified to the S-GW 30 in Step 304 of FIG. .
- the eNode B 10 transmits information on the calling address of its own eNode B 10 and the calling address of the neighboring eNode B 10 to the S-GW 30 via the MME 20 when the UE 60 makes a call.
- step 401 it is assumed that UE 60 transmits a message for calling (Service Request message) to eNode B 10.
- the transmitter 11A of the eNode B 10 starts a calling procedure (Service Request procedure) including information on the calling address of the own eNode B 10, the calling address of the neighboring eNode B 10, and the information of the Service Request message.
- a calling procedure Service Request procedure
- the message Initial UE Message message
- the transmission unit 22A of the MME 20 requests a message (Initial Context) that requests setup of the initial context of the UE 60 in Step 404.
- a Setup Request message is transmitted to the eNode B 10, and the transmitter 11 A of the eNode B 10 transmits a message for establishing a radio bearer (Radio Bearer Establishment message) to the UE 60 in Step 405.
- Radio Bearer Establishment message Radio Bearer Establishment message
- the transmitting unit 22A of the MME 20 transmits a message (Update Bearer Request message) requesting a bearer update including information on the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10 to the S-GW 30.
- a message (Update Bearer Request message) requesting a bearer update including information on the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10 to the S-GW 30.
- information on the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10 is stored in the storage unit 34A by the control unit 33A.
- step 407 the transmission unit 32A of the S-GW 30 transmits a response message (Update Bearer Response message) to the Update Bearer Request message to the MME 20.
- a response message Update Bearer Response message
- the control unit 33A of the S-GW 30 collates the source address of the packet data received from the eNode B 10 with the source address stored in the storage unit 34A. To do. If the storage unit 34A has a source address that matches the source address of the received packet data in the storage unit 34A, the control unit 33A determines that the received packet data is safe and transfers it to the P-GW 40 using the transmission unit 32A. If it is not in 34A, the received packet data is judged to be dangerous and discarded.
- step 409 the transmission unit 11A of the eNode B 10 transmits a response message (Initial Context Response message) to the Initial Context Setup Request message to the MME 20.
- the S-GW 30 sends the eNode B 10 through the MME 20 and the eNode B 10 calling address and the Target eNode B 10-T in the neighboring eNode B 10 Information on the calling address can be acquired.
- the S-GW 30 can confirm the safety of the packet data received from the eNode B 10 even if a handover occurs, the security of the wireless communication system can be ensured.
- the MME 20 only needs to transfer the eNode B 10 address information received from the eNode B 10 to the S-GW 30, so there is no need to store the eNode B 10 address information.
- the MME 20 and the S-GW 30 are changed by the location registration of the UE 60, and the MME 20 and the S-GW 30 before the change are referred to as the source MME 20-S and the source S-GW 30-S, respectively.
- the latter MME 20 and S-GW 30 are referred to as Target MME 20-T and Target S-GW 30-T, respectively (hereinafter the same).
- the MME 20 and the S-GW 30 before and after the change are determined based on information included in the location registration request message (TAU Request message) from the UE 60.
- UE 60 transmits a TAU Request message for location registration to eNode B 10 in step 501.
- the transmitter 11A of the eNode B 10 starts a TA update procedure (TA Update procedure) including information on the originating address of its own eNode B 10, the originating address of the neighboring eNode B 10 and information on the TAU Request message in Step 502.
- TA Update procedure TA Update procedure
- the transmitter 11A of the eNode B 10 starts a TA update procedure (TA Update procedure) including information on the originating address of its own eNode B 10, the originating address of the neighboring eNode B 10 and information on the TAU Request message in Step 502.
- Step 503 the transmission unit 22A of the Target MME 20-T transmits a message requesting the context information of the UE 60 (Context Request message) to the Source MME 20-S.
- the transmission unit 22A of the Source MME 20-S transmits a response message (Context Response message) to the Context Request message to the Target MME 20-T.
- Step 505 when the authentication of the UE 60 by the Target MME 20-T using the user information stored in the HSS 50 is successful in Step 505, the transmitter 22A of the Target MME 20-T determines that the context of the UE 60 is the Target MME 20-T in Step 506.
- a message Context Acknowledge message
- Step 507 a Create Bearer including information on the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10 Send a Request message to the Target S-GW30-T.
- the Target S-GW 30-T information on the originating address of the eNode B 10 and the originating address of the neighboring eNode B 10 is stored in the storage unit 34A by the control unit 33A.
- the transmission unit 32A of the Target S-GW 30-T includes information on the originating address of the Target S-GW 30-T and the originating address of the neighboring S-GW, and sets the data transfer route to the Source S- A message (Update Bearer Request message) requesting switching from the GW 30-S to the Target S-GW 30-T is transmitted to the P-GW 40.
- the Source S- A message Update Bearer Request message
- the P-GW 40 transmits a response message (Update Bearer Response message) to the Update Bearer Request message to the Target S-GW 30 -T.
- the transmission unit 32A of the Target S-GW 30-T transmits a response message to the Create Bearer Request message (Create Bearer Response message) to the Target MME 20-T.
- step 511 bearer release processing related to the Source S-GW 30-S is performed.
- the transmission unit 22A of the Target MME 20-T transmits a message (Initial Context Setup Request message) to the eNode B 10 to accept the location registration (TAU Accept).
- the transmission unit 11 ⁇ / b> A of the eNode B 10 transmits a message (Radio Bearer Establishment Request message) requesting establishment of a radio bearer to the UE 60, including a message (TAU Accept message) to accept location registration.
- Step 514 the UE 60 transmits a response message (Radio Bearer Establishment Response message) to the Radio Bearer Establishment Request message to the eNode B 10. Subsequently, in step 515, the transmission unit 11A of the eNode B 10 transmits a response message (Initial Context Setup Response message) to the Initial Context Setup Request message to the Target MME 20-T.
- a response message (Radio Bearer Establishment Response message) to the Radio Bearer Establishment Request message to the eNode B 10.
- step 515 the transmission unit 11A of the eNode B 10 transmits a response message (Initial Context Setup Response message) to the Initial Context Setup Request message to the Target MME 20-T.
- the control unit 33A of the Target S-GW 30-T collates the source address of the received packet data with the source address stored in the storage unit 34A. If the storage unit 34A has a source address that matches the source address of the received packet data in the storage unit 34A, the control unit 33A determines that the received packet data is safe and transfers it to the P-GW 40 using the transmission unit 32A. If it is not in 34A, the received packet data is judged to be dangerous and discarded.
- the Target S-GW 30-T may become the eNode B 10 source address and the Target eNode B 10-T from the eNode B 10 via the Target MME 20-T during the location registration of the UE 60.
- the originating address of a certain neighboring eNode B 10 can be acquired.
- the Target S-GW 30-T can confirm the safety of the packet data received from the eNode B 10 even when a handover occurs, so that the security of the wireless communication system can be ensured.
- the Target MME 20-T only needs to forward the eNode B10 address information received from the eNode B10 to the Target S-GW30-T, and therefore stores the eNode B10 address information. There is no need to keep it.
- the eNode B 10 when the eNode B 10 starts up, the eNode B 10 transmits information on the originating address of the neighboring eNode B 10 to the MME 20 and stores it in the MME 20. Then, the eNode B 10 transmits information on the calling address of its own eNode B 10 to the MME 20 at the time of attaching, calling, location registration, etc., and the MME 20 receives the information on the calling address of the eNode B 10 received from the eNode B 10. The information is transmitted to the S-GW 30 together with information on the originating address of the neighboring eNode B 10 stored at the time of startup.
- step 601 when the eNode B 10 is started up the transmitter 11A of the eNode B 10 A setup message (S1 Setup Request message) including information on the calling address of the eNode B 10 is transmitted to the MME 20.
- S1 Setup Request message information on the calling address of the eNode B 10 is transmitted to the MME 20.
- information on the originating address of the neighboring eNode B 10 is stored in a storage unit (not shown) by the control unit 23A.
- the transmission unit 22A of the MME 20 transmits a response message (S1 Setup Response message) to the S1 Setup Request message to the eNode B 10 in Step 603A.
- control unit 13A of the eNode B 10 does not need to include the information of the originating address of the neighboring eNode B 10 in the Initial UE Message message at step 302 in FIG.
- control unit 23A of the MME 20 may further include information on the originating address of the neighboring eNode B 10 stored in the storage unit in the Create Default Bearer Request message and send it to the S-GW 30. it can.
- the S-GW 30 obtains the calling address of the neighboring eNode B 10 that may become the Target eNode B 10-T from the MME 20 at the time of attachment, call origination, or location registration. Can do.
- the eNode B 10 origination address information can also be acquired from the eNode B 10 via the MME 20 at the time of attachment or the like.
- the S-GW 30 can confirm the safety of the packet data received from the eNode B 10, so that the security of the wireless communication system can be ensured.
- the eNode B 10 address information is transmitted from the eNode B 10 to the S-GW 30 via the MME 20, manual work by the maintenance staff can be reduced.
- the eNode B 10 need only transmit the information of the originating address of the neighboring eNode B 10 only once at the time of start-up, so there is no need to transmit it every time it is attached.
- the eNode B 10 transmits information on the originating address of the neighboring eNode B 10 to the MME 20 when the own eNode B 10 is started up, but when the neighboring eNode B 10 is started up, as shown in FIG. 9B. As described above, it is possible to transmit the information of the originating address of the launched neighboring eNode B 10 to the MME 20.
- the transmitter 11A of the eNode B 10 transmits a setup message (X2 Setup Request message) including its originating address to the neighboring eNode B 10 via the X2 interface in Step 602B. To do.
- a response message (X2 Setup Response message) to the X2 Setup Request message is transmitted from the neighboring eNode B10.
- the transmission unit 11A of the eNode B 10 transmits a reconfiguration message (S1 Reconfiguration message) including the originating address of the neighboring eNode B 10 to the MME 20.
- the MME 20 transmits a response message (S1 Reconfiguration Response message) to the S1 Reconfiguration message.
- the originating address information of the own eNode B 10 can be transmitted to the MME 20.
- step 601C for example, when an interface card is added as traffic increases, the transmitting unit 11A of the eNode B 10 uses the source address of the added interface card in step 602C instead of S1 Setup.
- the included reconfiguration message (S1 Reconfiguration message) is transmitted to the MME 20.
- step 603C the MME 20 transmits a response message (S1 Reconfiguration Response message) to the S1 Reconfiguration message.
- information on the originating address of the neighboring eNode B 10 where the addition or setting change is made may be transmitted to the MME 20. it can.
- step 601D for example, when an interface card is added, the transmitter 11A of the eNode B 10 sends a reconfiguration message (X2 Reconfiguration message) including its originating address in step 602D to the X2 interface. To the nearby eNode B10. Next, a response message (X2 Reconfiguration Response message) to the X2 Reconfiguration message is transmitted from the neighboring eNode B 10. Thereafter, in step 604D, the transmission unit 11A of the eNode B 10 transmits a reconfiguration message (S1 Reconfiguration message) including the originating address of the neighboring eNode B 10 to the MME 20. Next, in step 605D, the MME 20 transmits a response message (S1 Reconfiguration Response message) to the S1 Reconfiguration message.
- S1 Reconfiguration Response message a response message (S1 Reconfiguration Response message) to the S1 Reconfiguration message.
- the storage unit 34A of the S-GW 30 stores the calling address of the Source eNode B 10-S and the neighboring eNode B 10. It is assumed that the calling address information has already been saved.
- the S-GW 30 receives uplink packet data from the Target eNode B 10-T.
- the storage unit 34A of the S-GW 30 also stores information on the originating address of the eNode B 10 in the vicinity of the Source eNode B 10-S, which may be the Target eNode B 10-T.
- control unit 33A of the S-GW 30 confirms the safety of the received packet data without waiting for subsequent messages (Path Switch Request message and User Plane Update Request message) via the MME 20 from the Target eNode B 10-T. can do.
- step 701 the control unit 33A of the S-GW 30 collates the source address of the received packet data with the source address stored in the storage unit 34A.
- the storage unit 34A has a source address that matches the source address of the received packet data, it is assumed that the control unit 33A determines that the received packet data is safe.
- the transmitting unit 32A transfers the received packet data to the P-GW 40 in step 702.
- the transmission unit 11A of the Target eNode B 10-T sends a Path Switch Request message including information on the originating address of the neighboring eNode B 10 to the MME 20 in Step 703.
- the transmitting unit 22A of the MME 20 transmits to the S-GW 30 a User Plane Update Request message including information on the originating address of the eNode B 10 in the vicinity of the Target eNode B 10-T.
- information on the originating address of the eNode B 10 in the vicinity of the Target eNode B 10-T is stored in the storage unit 34A by the control unit 33A.
- the S-GW 30 uses the information of the originating address of the eNode B10 in the vicinity of the Source eNode B10-S to ensure the safety of the packet data received from the eNode B10. Can be confirmed.
- FIGS. 11 and 12 the same parts as those in FIG. 2 and parts common to FIGS. 11 and 12 are denoted by the same reference numerals.
- the source address of the source eNode B 10-S and nearby addresses are stored in the storage unit 34A of the S-GW 30. It is assumed that the eNode B10 calling address information has already been saved.
- the S-GW 30 receives uplink packet data from the Target eNode B 10-T.
- step 801 the control unit 33A of the S-GW 30 collates the source address of the received packet data with the source address stored in the storage unit 34A.
- the control unit 33A determines that the received packet data is dangerous.
- control unit 33A of the S-GW 30 starts storing the received packet data in a buffer (not shown) in step 802, and starts time measurement by a timer (not shown) in step 803.
- the transmission unit 11A of the Target eNode B 10-T sends a Path Switch Request message including information on the originating address of its Node B 10 to the MME 20 in Step 804. Send to.
- the transmitting unit 22A of the MME 20 transmits a User Plane Update Request message including information on the calling address of the Node B10 of the Target eNode B10-T to the S-GW 30.
- the controller 33A of the S-GW 30 performs downlink path switching in Step 2311, and then in Step 806, the source address of the packet data received in Step 2307 is the Target eNode B10 received in Step 805. -Match with the originating address of T.
- the control unit 33A determines that the received packet data is safe.
- the transmission unit 32A reads the received packet data from the buffer and transfers it to the P-GW 40.
- the control unit 33A stops the timer.
- step 901 if the source address that matches the source address of the received packet data is not notified and the measured time of the timer exceeds the preset time, the control unit 33A of the S-GW 30 In step 902, the timer is stopped and the received packet data is discarded from the buffer.
- control unit 33A of the S-GW 30 receives the packet data thereafter in step 903, the control unit 33A discards the received packet data without storing it in the buffer in step 904. Transfer to the GW 40 is stopped.
- the S-GW 30 uses the source address information of the eNode B 10 adjacent to the Source eNode B 10-S and the source address information of the Target eNode B 10-T itself. The safety of the packet data received from the eNode B 10 can be confirmed.
- the Target eNode B10-T notifies the calling address individually, so that the calling address and the called address do not necessarily have to be equal, so the degree of freedom in designing the radio communication system may be increased. it can. Hereinafter, this reason will be described.
- the S-GW 30 checks the source address of the packet data received from the eNode B 10 with the destination address of the eNode B 10 notified from the MME 20 when the bearer is set up. It is also possible to determine that there is a discard.
- the source and destination addresses of the eNode B 10 are not necessarily equal, not only can the degree of freedom in designing the radio communication system be improved, but also the security of the radio communication system can be improved. Can be further increased.
- the eNode B10 source address and destination address may be made equal. In this case, if the MME 20 receives only one address from the Target eNode B 10-T in step 804, the MME 20 cannot determine whether the address is a source address.
- Step 804 information (Indicator) indicating that the source address and destination address are equal is additionally included in the Path Switch Request message. Can do.
- the MME 20 can determine whether or not the address received from the Target eNode B 10-T is the calling address in Step 804. Therefore, in the S-GW 30, the safety of the packet data received from the eNode B 10 is determined. Can be confirmed.
- FIG. 13 and FIG. 14 the same reference numerals are given to the same parts as in FIG. 2 and the parts common to FIG. 13 and FIG. 14,
- the storage unit 34A of the S-GW 30 stores the source address of the Source eNode B 10-S and nearby addresses. It is assumed that the eNode B10 calling address information has already been saved.
- the S-GW 30 receives uplink packet data from the Target eNode B 10-T.
- step 1001 the control unit 33A of the S-GW 30 collates the source address of the received packet data with the source address stored in the storage unit 34A.
- the control unit 33A determines that the received packet data is dangerous.
- control unit 33A of the S-GW 30 starts time measurement using a timer (not shown) in step 1002, and the transmission unit 32A continues to transfer the received packet data to the P-GW 40 in step 1003.
- the transmission unit 11A of the Target eNode B 10-T sends a Path Switch Request message including the information of the originating address of its Node B 10 to the MME 20 in Step 1004. Send to.
- the transmitting unit 22A of the MME 20 transmits a User Plane Update Request message including information on the calling address of the Node B10 of the Target eNode B10-T to the S-GW 30.
- the control unit 33A of the S-GW 30 performs downlink path switching in Step 2311, and then in Step 1006, the source address of the packet data received in Step 2307 is the Target eNode B10 received in Step 1005. -Match with the originating address of T.
- the control unit 33A determines that the received packet data is safe and stops the timer in step 1007.
- step 1101 the control unit 33A of the S-GW 30 if the measured time of the timer exceeds the preset time without being notified of the source address that matches the source address of the received packet data.
- step 1102 the timer is stopped.
- control unit 33A of the S-GW 30 Even if the control unit 33A of the S-GW 30 receives the packet data after that in step 1103, the control unit 33A discards the received packet data in step 1104, and stops the transfer to the P-GW 40 in step 1105. .
- the S-GW 30 uses the source address information of the eNode B 10 adjacent to the Source eNode B 10-S and the source address information of the Target eNode B 10-T itself. The safety of the packet data received from the eNode B 10 can be confirmed.
- the degree of freedom in designing the radio communication system can be increased, and the security of the radio communication system can be further increased.
- the eNode B 10 includes a transmission unit 11B that directly transmits packet data including the header address information of the neighboring eNode B 10 to the S-GW 30.
- the information of the origination address of neighboring eNode B10 can be considered to be manually set in the eNode B10 in advance by a maintenance person, for example, this is not restrictive.
- the S-GW 30 includes a receiving unit 31B that receives packet data including information on the originating address of the neighboring eNode B 10 in the header from the eNode B 10.
- the eNode B 10 includes a receiving unit 12A and a control unit 13A in addition to the above-described transmitting unit 11A.
- the transmission unit 11B performs transmission processing of the message and packet data to the S-GW 30, and as an example, as described above, the packet data including the information of the originating address of the neighboring eNode B 10 in the header is converted into S -Process to send to GW30.
- the receiving unit 12B performs processing for receiving messages and packet data from the S-GW 30.
- the control unit 13B performs processing for generating a message including information to be transmitted to the S-GW 30 and packet data including the information in the header.
- transmission and reception of messages and packet data by the transmission unit 11B, the reception unit 12B, and the control unit 13B are also performed between the UE 60, other eNode Bs 10, and the MME 20.
- the S-GW 30 includes a transmission unit 32B, a control unit 33B, and a storage unit 34B in addition to the reception unit 31B described above.
- the receiving unit 31B performs processing for receiving a message and packet data from the eNode B 10, and as an example, as described above, from the eNode B 10, the packet data including information on the originating address of the neighboring eNode B 10 in the header. Process to receive.
- the transmission unit 32B performs transmission processing of messages and packet data to the eNode B10.
- the control unit 33B is a process for generating a message including information to be transmitted to the eNode B 10, a process for storing information on the originating address of the neighboring eNode B 10 in the storage unit 34B, and an originating address of the packet data received from the eNode B 10 A process for confirming the safety of the received packet data is performed by comparing with the originating address stored in 34B.
- transmission and reception of messages and packet data by the transmission unit 32B, the reception unit 31B, and the control unit 33B are also performed between the MME 20 and the P-GW 40.
- the source address of the Source eNode B 10-S is already notified to the S-GW 30 by any one of the transmission operation examples 1 to 4 of the source address of the eNode B 10 in the first embodiment described above. It is assumed that the data is already stored in the storage unit 34 of the S-GW 30.
- the control unit 13B of the Source eNode B 10-S determines handover in Step 2301. .
- control unit 13B of the Source eNode B 10-S includes the originating address of the neighboring eNode B 10 in the header of the packet data received from the UE 60 in Step 1401, and the transmission unit 11B transmits the packet data to the S-GW 30. To do.
- the control unit 13B of the Source eNode B 10-S includes the originating address of the neighboring eNode B 10 in the GTP header (6 of 3GPP TS 29.060, V8.2.0).
- the GTP header has a part describing an extension header type (Extension Header Type) as shown in the upper table of FIG. Therefore, in this part, the originating address (Neighbouring eNB addresses) of the neighboring eNode B 10 defined as shown in the center table of FIG. 18 is described. Further, the description contents at this time are as shown in the table at the bottom of FIG.
- Extension Header Type Extension Header Type
- the S-GW 30 can acquire the source address of the neighboring eNode B 10 that may become the Target eNode B 10-T from the Source eNode B 10-S when the handover is determined.
- the source address information of the Source eNode B 10-S can be acquired from the Source eNode B 10-S at the time of attachment or the like.
- the S-GW 30 can confirm the safety of the packet data received from the eNode B 10 even if a handover occurs, the security of the wireless communication system can be ensured.
- the eNode B 10 address information is transmitted from the eNode B 10 to the S-GW 30 via the MME 20 or directly from the eNode B 10. it can.
- the eNode B 10 when the eNode B 10 according to the present embodiment performs a handover in which the UE 60 performs its own eNode B 10 as the Source eNode B 10-S, the eNode B 10 transmits a message including information on the calling address of the Target eNode B 10-T to the MME 20. A transmission unit 11C for transmission is included. Information about the Target eNode B 10-T is received from the Target eNode B 10-T as will be described later.
- the MME 20 receives from the eNode B 10 a message 21C that receives a message including information on the calling address of the Target eNode B 10-T, and a message including information on the calling address of the Target eNode B 10-T.
- a transmission unit 22C that transmits to the GW 30;
- the S-GW 30 includes a receiving unit 31C that receives a message including information on the calling address of the Target eNode B 10-T from the MME 20.
- the eNode B 10 includes a receiving unit 12C and a control unit 13C in addition to the above-described transmitting unit 11C.
- the transmission unit 11C performs processing for transmitting the message and packet data to the MME 20, and as an example thereof, as described above, processing for transmitting a message including information on the calling address of the Target eNode B 10-T to the MME 20. Do.
- the receiving unit 12C performs reception processing of messages and packet data from the MME 20.
- the control unit 13C performs processing for generating a message including information to be transmitted to the MME 20.
- transmission and reception of messages and packet data by the transmission unit 11C, the reception unit 12C, and the control unit 13C are also performed between the UE 60, the other eNode B 10, and the S-GW 30.
- the MME 20 includes a control unit 23C in addition to the reception unit 21C and the transmission unit 22C described above.
- the receiving unit 21C performs processing for receiving messages and packet data from the eNode B 10 and the S-GW 30. As an example, the receiving unit 21C receives information on the calling address of the Target eNode B 10-T from the eNode B 10 as described above. Process to receive the message that contains.
- the transmission unit 22C performs transmission processing of the message and packet data to the Node B 10 and the S-GW 30. As an example, the transmission unit 22C transmits a message including the information of the source address of the Target eNode B 10-T as described above. -Process to send to GW30.
- the control unit 23C performs processing for generating a message including information to be transmitted to the eNode B 10 and the S-GW 30.
- the S-GW 30 includes a transmission unit 32C, a control unit 33C, and a storage unit 34C in addition to the above-described reception unit 31C.
- the receiving unit 31C performs a process of receiving a message and packet data from the MME 20, and as an example thereof, a process of receiving a message including information on the calling address of the Target eNode B 10-T from the MME 20 as described above. I do.
- the transmission unit 32C performs transmission processing of messages and packet data to the MME 20.
- the control unit 33C generates a message including information to be transmitted to the MME 20, stores information on the originating address of the neighboring eNode B 10 in the storage unit 34C, and stores the originating address of the packet data received from the MME 20 in the storage unit 34C.
- a process for confirming the safety of the received packet data is performed by collating with the stored source address.
- transmission and reception of messages and packet data by the transmission unit 32C, the reception unit 31C, and the control unit 33C are also performed with the P-GW 40.
- the source address of the Source eNode B 10-S is already notified to the S-GW 30 by one of the transmission operation examples 1 to 4 of the source address of the eNode B 10 in the first embodiment described above. It can also be assumed that the data is already stored in the storage unit 34C of the S-GW 30.
- the transmission unit 11C of the Target eNode B 10-T After setting the radio resource in step 2303, the transmission unit 11C of the Target eNode B 10-T generates the target eNode B 10-T in Step 1801. A response message (Handover Response message) to the Handover Request message including address information is transmitted to the Source eNode B 10-S.
- step 1802 the transmission unit 11C of the Source eNode B 10-S transmits, to the MME 20, a message indicating that a handover has occurred (Handover Inform message) including information on the source address of the Target eNode B 10-T.
- step 1803 the transmission unit 22C of the MME 20 transmits a message (Pre-User Plane Update Request message) including information on the calling address of the Target eNode B 10-T to the S-GW 30.
- step 1804 the transmission unit 32C of the S-GW 30 transmits a response message (Pre-User Plane Update Response message) to the Pre-User Plane Update Request message to the MME 20.
- the S-GW 30 information on the calling address of the Target eNode B 10-T is stored in the storage unit 34C by the control unit 33C.
- control unit 33C of the S-GW 30 confirms the safety of the received packet data without waiting for subsequent messages (Path Switch Request message and User Plane Update Request message) via the MME 20 from the Target eNode B10-T. can do.
- step 1805 the control unit 33C of the S-GW 30 collates the source address of the received packet data with the source address stored in the storage unit 34C.
- the storage unit 34C has a source address that matches the source address of the received packet data, it is assumed that the control unit 33C determines that the received packet data is safe. In this case, the transmitting unit 32C transfers the received packet data to the P-GW 40 in step 1806.
- the source eNode B10-S source address information is obtained from the Source eNode B10-S at the time of attachment or the like according to any of the eNode B10 source address transmission operation examples 1 to 4 in the first embodiment described above. It can also be acquired.
- the S-GW 30 can acquire the source address of the Target eNode B 10-T from the Source eNode B 10-S at the time of handover determination.
- the S-GW 30 can confirm the safety of the packet data received from the eNode B 10 even if a handover occurs, the security of the wireless communication system can be ensured.
- the Source eNode B 10-T is the Target eNode B 10-T.
- the S-GW 30 can confirm the safety from the first packet data received from the Target eNode B 10-T. Further, in the present embodiment, since the eNode B 10 address information is transmitted from the eNode B 10 to the S-GW 30, manual work by the maintenance staff can be reduced.
- the source eNode B10-S transmits the information of the originating address of the Target eNode B10-T, not the originating address of the neighboring eNode B10-S, so the originating address of the neighboring eNode B10-S
- the amount of information to be transmitted can be reduced compared to the case of transmitting the information.
- the S-GW 30 when the S-GW 30 according to the present embodiment performs a handover with a change to its own S-GW 30 while the UE 60 is roaming to an external network, the S-GW 30 originates
- the transmitter 32D transmits a message including address information to the P-GW 40 via the public network.
- the P-GW 40 according to the present embodiment includes a receiving unit 41D that receives information about the calling address of the Target S-GW 30-T from the Target S-GW 30-T after the change by the handover via the public network. ing.
- the S-GW 30 includes a receiving unit 31D and a control unit 33D in addition to the transmitting unit 32D described above.
- the transmission unit 32D performs transmission processing of the message and packet data to the P-GW 40.
- the transmission unit 32D sends a message including information on the originating address of its own S-GW 30 to the P-GW 40 as described above. Process to send.
- the receiving unit 31D performs processing for receiving messages and packet data from the P-GW 40.
- the control unit 33D performs processing for generating a message including information to be transmitted to the P-GW 40.
- transmission and reception of messages and packet data by the transmission unit 32D, the reception unit 31D, and the control unit 33D are also performed between the MME 20 and the eNode B10.
- the P-GW 40 includes a transmission unit 42D, a control unit 43D, and a storage unit 44D in addition to the reception unit 41D described above.
- the reception unit 41D performs reception processing of the message and packet data from the S-GW 30, and as an example, as described above, from the Target S-GW 30-T, the source address of the Target S-GW 30-T A process for receiving a message including the information is performed.
- the transmission unit 42D performs transmission processing of messages and packet data to the S-GW 30.
- the control unit 43D performs processing for generating a message including information to be transmitted to the S-GW 30, processing for storing the information of the source address of the Target S-GW 30-T in the storage unit 34D, and a packet received from the Target S-GW 30-T. By comparing the data source address with the source address stored in the storage unit 34D, processing for confirming the safety of the received packet data is performed.
- the Source eNode B 10-S moves in Step 2101 to Source Suppose that a handover is determined that involves a change from S-GW30-S to Target S-GW30-T.
- the source eNode B 10-S transmits a message for preparing a handover (Handover Required message) to the source MME 20, and the source MME 20 in step 2103, the address of the UE 60 Context, the address of the P-GW 40, and the like.
- a message (Forward Relocation Request message) is sent to the Target MME 20-T.
- the Target MME 20-T transmits a message requesting bearer generation (Create Bearer Request message) to the Target S-GW 30-T, and the transmission unit 32D of the Target S-GW 30-T performs step 2105. Then, a message (Pre-Update Bearer Request message) including information on the source address of the Target S-GW 30-T is transmitted to the P-GW 40. In the P-GW 40, information on the calling address of the Target S-GW 30-T is stored in the storage unit 44D by the control unit 43D.
- the transmission unit 42D of the P-GW 40 transmits a response message (Pre-Update Bearer Response message) to the Pre-Update Bearer Request message to the Target S-GW 30-T, and the Target S-GW 30-T.
- the transmitting unit 32D transmits a response message (Create Bearer Response message) to the Create Bearer Request message to the Target MME 20-T.
- Step 2108 the Target MME 20-T transmits a message requesting handover (Handover Request message) to the Target eNode B 10-T.
- Step 2109 the Target eNode B 10-T sends a response message ( (Handover Request Acknowledge message) is transmitted to the Target MME 20-T.
- Step 2110 the Target MME 20-T sends a response message (Forward Relocation Response message) to the Forward Relocation Request message to the Source MME 20-S, and the Source MME 20-S commands handover in Steps 2111, 1122.
- Message (Handover Command message) to be transmitted to the UE 60 via the Source eNode B 10-S.
- the UE 60 transmits a message indicating handover completion (Handover Complete message) to the Target eNode B 10-T in Step 2114. To do.
- the control unit 43D of the P-GW 40 causes the source address of the received packet data in step 2116. Is compared with the calling address stored in the storage unit 44D.
- the source address of the Target S-GW 30-T that matches the source address of the received packet data is in the storage unit 44D, and the control unit 43D determines that the received packet data is safe.
- the transmission unit 42D transfers the received packet data into its own network.
- the Target eNode B 10-T sends a message (Handover Notify message) notifying that the UE 60 has connected to the Target eNode B 10-T to the Target MME 20-T, and the Target MME 20-T
- a message (Forward Relocation Complete message) notifying that the UE 60 has been handed over is transmitted to the Source MME 20-S. ledge message) to the Target MME20-T.
- the Target MME 20-T transmits a message (Update Bearer Request message) requesting an update of the bearer to the P-GW 40 via the Target S-GW 30- in Steps 2121 and 2122, and the P-GW 40 transmits.
- the unit 42D transmits a response message (Update Bearer Response message) to the Update Bearer Request message to the Target MME 20-T via the Target S-GW 30-.
- the transmitting unit 42D of the P-GW 40 transmits downlink packet data to the Target S-GW 30-.
- the Source MME 20-S sends a resource release message (Release Resource message) in Step 2126 to the Source eNode B10- To S.
- the Source MME 20-S transmits a message requesting to delete the bearer (Delete Bearer Request message) to the Source S-GW B30-S, and the transmission unit 32D of the Source S-GW B30-S
- a response message Delete Bearer Response message
- Delete Bearer Response message is transmitted to the Source MME 20-S.
- the P-GW 40 obtains the information of the originating address of the Target S-GW 30-T when performing a handover with a change from the Source S-GW 30-S to the Target S-GW 30-T. can do.
- the P-GW 40 can confirm the safety of the packet data received from the S-GW 30 even when a handover accompanied by the change of the S-GW 30 occurs. it can.
- the P-GW 40 receives packet data from the S-GW 30 via the public network, and thus there is a high possibility that the security of the wireless communication system is threatened. .
- the packet data safety confirmation according to the present embodiment is more effective.
- the Source S-GW 30-S is the Target S-GW 30. Since the information on the originating address of -T is transmitted to the P-GW 40 via the MME 20, the P-GW 40 can confirm the safety from the first packet data received from the Target S-GW 30-T.
- the LTE wireless communication system has been described as an example.
- the present invention can be applied not only to the LTE radio communication system but also to other radio communication systems including a base station apparatus, a mobile control node, and a gateway apparatus.
- the wireless communication system in which the mobile control node and the gateway device are separated has been described as an example.
- the present invention is also applicable to a wireless communication system in which the mobile control node and the gateway device are integrated. can do.
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Abstract
Description
3GPP TS 23.401,V8.0.0 3GPP TS 36.300,V8.2.0
基地局装置と、移動制御ノードと、ゲートウェイ装置と、を有してなる無線通信システムであって、
前記基地局装置は、
前記基地局装置の近隣の基地局装置の発アドレスの情報を、前記移動制御ノードに送信し、
前記移動制御ノードは、
前記基地局装置から、前記近隣の基地局装置の発アドレスの情報を受信し、
前記近隣の基地局装置の発アドレスの情報を前記ゲートウェイ装置に送信し、
前記ゲートウェイ装置は、
前記移動制御ノードから、前記近隣の基地局装置の発アドレスの情報を受信する。
基地局装置と、ゲートウェイ装置と、を有してなる無線通信システムであって、
前記基地局装置は、
前記基地局装置の近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、前記ゲートウェイ装置に送信し、
前記ゲートウェイ装置は、
前記基地局装置から、前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを受信する。
基地局装置と、移動制御ノードと、ゲートウェイ装置と、を有してなる無線通信システムであって、
前記基地局装置は、
無線通信装置が前記基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を、前記移動制御ノードに送信し、
前記移動制御ノードは、
前記基地局装置から、前記移動先の基地局装置の発アドレスの情報を受信し、
前記移動先の基地局装置の発アドレスの情報を前記ゲートウェイ装置に送信し、
前記ゲートウェイ装置は、
前記移動制御ノードから、前記移動先の基地局装置の発アドレスの情報を受信する。
基地局装置と、移動制御ノードと、前記基地局装置と接続されたゲートウェイ装置と、前記ゲートウェイ装置と接続された上位ゲートウェイ装置と、を有してなる無線通信システムであって、
前記ゲートウェイ装置は、
無線通信装置が前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置の発アドレスの情報を、前記上位ゲートウェイ装置に送信し、
前記上位ゲートウェイ装置は、
前記ゲートウェイ装置から、前記ゲートウェイ装置の発アドレスの情報を受信する。
自己の基地局装置の近隣の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信部を有する。
自己の基地局装置の近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、ゲートウェイ装置に送信する送信部を有する。
無線通信装置が前記基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信部を有する。
基地局装置から移動制御ノードを介して、当該基地局装置の近隣の基地局装置の発アドレスの情報を受信する受信部を有する。
基地局装置から、当該基地局装置の前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを受信する受信部を有する。
基地局装置から移動制御ノードを介して、無線通信装置が当該基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を受信する受信部を有する。
基地局装置と上位ゲートウェイ装置との間に接続されたゲートウェイ装置であって、
無線通信装置が前記ゲートウェイへの変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置の発アドレスの情報を、前記上位ゲートウェイ装置に送信する送信部を有する。
基地局装置に接続されたゲートウェイ装置と接続された上位ゲートウェイ装置であって、
無線通信装置が前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置から、前記ゲートウェイ装置の発アドレスの情報を受信する受信部を有する。
基地局装置による無線通信方法であって、
前記基地局装置の近隣の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信ステップを有する。
基地局装置による無線通信方法であって、
前記基地局装置の近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、ゲートウェイ装置に送信する送信ステップを有する。
基地局装置による無線通信方法であって、
無線通信装置が前記基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信ステップを有する。
ゲートウェイ装置による無線通信方法であって、
基地局装置から移動制御ノードを介して、当該基地局装置の近隣の基地局装置の発アドレスの情報を受信する受信ステップを有する。
ゲートウェイ装置による無線通信方法であって、
基地局装置から、当該基地局装置の前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを受信する受信ステップを有する。
ゲートウェイ装置による無線通信方法であって、
基地局装置から移動制御ノードを介して、無線通信装置が当該基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を受信する受信ステップを有する。
基地局装置と上位ゲートウェイ装置との間に接続されたゲートウェイ装置による無線通信方法であって、
前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置の発アドレスの情報を、前記上位ゲートウェイ装置に送信する送信ステップを有する。
基地局装置に接続されたゲートウェイ装置と接続された上位ゲートウェイ装置による無線通信方法であって、
無線通信装置が前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置から、前記ゲートウェイ装置の発アドレスの情報を受信する受信ステップを有する。
まず、本実施形態の概略構成について、図4を参照して説明する。
本例では、eNode B10が、UE60のアタッチ時に、自己のeNode B10の発アドレスおよび近隣のeNode B10の発アドレスの情報を、MME20を介してS-GW30に送信する。なお、アタッチとは、UE60のeNode B10への最初のアクセスのことであり、例えば、電源投入後の最初のアクセス等が該当する。
本例では、eNode B10が、UE60の発呼時に、自己のeNode B10の発アドレスおよび近隣のeNode B10の発アドレスの情報を、MME20を介してS-GW30に送信する。
本例では、eNode B10が、UE60の位置登録(TA Update、TA=Tracking Area)時に、自己のeNode B10の発アドレスおよび近隣のeNode B10の発アドレスの情報を、MME20を介してS-GW30に送信する。なお、位置登録は、着信時にページングを行うエリアであるTAをUE60に割り当てるために行われる(非特許文献1の5.3.3.1)。
本例では、eNode B10が、eNode B10の立ち上げ時に、近隣のeNode B10の発アドレスの情報をMME20に送信し、MME20に保存する。そして、eNode B10が、アタッチ時、発呼時、位置登録時等に、自己のeNode B10の発アドレスの情報をMME20に送信し、MME20が、eNode B10から受信したeNode B10の発アドレスの情報を、立ち上げ時に保存しておいた近隣のeNode B10の発アドレスの情報とともに、S-GW30に送信する。
以下、本例の動作について、図10を参照して説明する。
以下、本例の動作について、図11および図12を参照して説明する。
以下、本例の動作について、図13および図14を参照して説明する。
まず、本実施形態の概略構成について、図15を参照して説明する。
まず、本実施形態の概略構成について、図19を参照して説明する。
まず、本実施形態の概略構成について、図22を参照して説明する。
Claims (57)
- 基地局装置と、移動制御ノードと、ゲートウェイ装置と、を有してなる無線通信システムであって、
前記基地局装置は、
前記基地局装置の近隣の基地局装置の発アドレスの情報を、前記移動制御ノードに送信し、
前記移動制御ノードは、
前記基地局装置から、前記近隣の基地局装置の発アドレスの情報を受信し、
前記近隣の基地局装置の発アドレスの情報を前記ゲートウェイ装置に送信し、
前記ゲートウェイ装置は、
前記移動制御ノードから、前記近隣の基地局装置の発アドレスの情報を受信する、無線通信システム。 - 前記基地局装置は、
無線通信装置の前記基地局装置へのアタッチ時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項1に記載の無線通信システム。 - 前記基地局装置は、
無線通信装置の発呼時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項1に記載の無線通信システム。 - 前記基地局装置は、
無線通信装置の前記基地局装置への位置登録時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項1に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置の立ち上げ時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項1に記載の無線通信システム。 - 前記ゲートウェイ装置は、
前記近隣の基地局装置の発アドレスの情報を保存し、
無線通信装置がハンドオーバした移動先の基地局装置から受信したパケットデータの発アドレスを、前記保存された発アドレスと照合する、請求項1から5のいずれか1項に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置が前記移動先の基地局装置となった場合、前記の基地局装置の近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項6に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置が前記移動先の基地局装置となった場合、前記基地局装置の発アドレスの情報を前記移動制御ノードに送信し、
前記ゲートウェイ装置は、
前記移動先の基地局装置から受信したパケットデータの発アドレスと一致する発アドレスを記憶していない場合、前記受信したパケットデータの発アドレスを、前記移動先の基地局装置から受信した発アドレスと照合する、請求項6に記載の無線通信システム。 - 前記基地局装置は、
前記基地局装置が前記移動先の基地局装置となった場合、前記基地局装置の発アドレスと着アドレスとが等しい旨の情報を前記移動制御ノードに送信する、請求項7に記載の無線通信システム。 - 前記ゲートウェイ装置は、
前記移動先の基地局装置から受信したパケットデータの発アドレスと一致する発アドレスを記憶していないことを検出した後、一定期間内に前記移動先の基地局装置から受信したパケットデータをバッファに保存し、
前記一定期間内に、前記移動先の基地局装置から受信した発アドレスが前記受信したパケットデータの発アドレスと一致した場合、前記バッファに保存したパケットデータを上位ノードに転送する、請求項8または9に記載の無線通信システム。 - 前記ゲートウェイ装置は、
前記移動先の基地局装置から受信したパケットデータの発アドレスと一致する発アドレスを記憶していないことを検出した後、一定期間内に前記移動先の基地局装置から受信したパケットデータを上位ノードに転送する、請求項8または9に記載の無線通信システム。 - 基地局装置と、ゲートウェイ装置と、を有してなる無線通信システムであって、
前記基地局装置は、
前記基地局装置の近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、前記ゲートウェイ装置に送信し、
前記ゲートウェイ装置は、
前記基地局装置から、前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを受信する、無線通信システム。 - 前記基地局装置は、
無線通信装置が前記基地局装置からハンドオーバする旨の決定があった後に、前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、前記ゲートウェイ装置に送信する、請求項12に記載の無線通信システム。 - 前記ゲートウェイ装置は、
前記近隣の基地局装置の発アドレスの情報を保存し、
無線通信装置がハンドオーバした移動先の基地局装置から受信したパケットデータの発アドレスを、前記保存された発アドレスと照合する、請求項12または13に記載の無線通信システム。 - 基地局装置と、移動制御ノードと、ゲートウェイ装置と、を有してなる無線通信システムであって、
前記基地局装置は、
無線通信装置が前記基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を、前記移動制御ノードに送信し、
前記移動制御ノードは、
前記基地局装置から、前記移動先の基地局装置の発アドレスの情報を受信し、
前記移動先の基地局装置の発アドレスの情報を前記ゲートウェイ装置に送信し、
前記ゲートウェイ装置は、
前記移動制御ノードから、前記移動先の基地局装置の発アドレスの情報を受信する、無線通信システム。 - 前記基地局装置は、
前記基地局装置が前記移動先の基地局装置となった場合、移動元の基地局装置からのハンドオーバ要求に応答して、前記基地局装置の発アドレスの情報を前記移動元の基地局装置に送信し、
前記基地局装置が前記移動元の基地局装置となった場合、前記移動先の基地局装置から受信した、前記移動先の基地局装置の発アドレスの情報を、前記移動制御ノードに送信する、請求項15に記載の無線通信システム。 - 前記ゲートウェイ装置は、
前記移動先の基地局装置の発アドレスの情報を保存し、
前記移動先の基地局装置から受信したパケットデータの発アドレスを、前記保存された発アドレスと照合する、請求項15または16に記載の無線通信システム。 - 前記基地局装置は、
ハンドオーバを命令するメッセージを前記無線通信装置に送信する前に、前記ゲートウェイ装置の発アドレス情報を、前記移動制御ノードを介して前記ゲートウェイ装置に送信する、請求項15から17のいずれか1項に記載の無線通信システム。 - 基地局装置と、移動制御ノードと、前記基地局装置と接続されたゲートウェイ装置と、前記ゲートウェイ装置と接続された上位ゲートウェイ装置と、を有してなる無線通信システムであって、
前記ゲートウェイ装置は、
無線通信装置が前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置の発アドレスの情報を、前記上位ゲートウェイ装置に送信し、
前記上位ゲートウェイ装置は、
前記ゲートウェイ装置から、前記ゲートウェイ装置の発アドレスの情報を受信する、無線通信システム。 - 前記ゲートウェイ装置は、
前記移動制御ノードからのベアラ生成要求に応答して、前記ゲートウェイ装置の発アドレスの情報を前記上位ゲートウェイ装置に送信する、請求項19に記載の無線通信システム。 - 前記上位ゲートウェイ装置は、
前記ゲートウェイ装置の発アドレスの情報を保存し、
前記ゲートウェイ装置から受信したパケットデータの発アドレスを、前記保存された発アドレスと照合する、請求項19または20に記載の無線通信システム。 - 前記ゲートウェイ装置は、前記基地局装置がハンドオーバを命令するメッセージを前記無線通信装置に送信する前に、前記ゲートウェイ装置の発アドレス情報を前記上位ゲートウェイ装置に送信する、請求項19から21のいずれか1項に記載の無線通信システム。
- 自己の基地局装置の近隣の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信部を有する、基地局装置。
- 前記送信部は、
無線通信装置の前記基地局装置へのアタッチ時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項23に記載の基地局装置。 - 前記送信部は、
無線通信装置の発呼時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項23に記載の基地局装置。 - 前記送信部は、
無線通信装置の前記基地局装置への位置登録時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項23に記載の基地局装置。 - 前記送信部は、
前記基地局装置の立ち上げ時に、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項23に記載の基地局装置。 - 前記送信部は、
無線通信装置が前記基地局装置にハンドオーバした場合、前記近隣の基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項23から27のいずれか1項に記載の基地局装置。 - 前記送信部は、
無線通信装置が前記基地局装置にハンドオーバした場合、前記基地局装置の発アドレスの情報を前記移動制御ノードに送信する、請求項23から27のいずれか1項に記載の基地局装置。 - 前記送信部は、
無線通信装置が前記基地局装置にハンドオーバした場合、前記基地局装置の発アドレスと着アドレスとが等しい旨の情報を前記移動制御ノードに送信する、請求項29に記載の基地局装置。 - 自己の基地局装置の近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、ゲートウェイ装置に送信する送信部を有する、基地局装置。
- 前記送信部は、
無線通信装置が前記基地局装置からハンドオーバする旨の決定があった後に、前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、前記ゲートウェイ装置に送信する、請求項31に記載の基地局装置。 - 無線通信装置が前記基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信部を有する、基地局装置。
- 前記送信部は、
前記基地局装置が前記移動先の基地局装置となった場合、移動元の基地局装置からのハンドオーバ要求に応答して、前記基地局装置の発アドレスの情報を前記移動元の基地局装置に送信し、
前記基地局装置が前記移動元の基地局装置となった場合、前記移動先の基地局装置から受信した、前記移動先の基地局装置の発アドレスの情報を、前記移動制御ノードに送信する、請求項33に記載の基地局装置。 - 前記送信部は、
ハンドオーバを命令するメッセージを前記無線通信装置に送信する前に、前記ゲートウェイ装置の発アドレス情報を、前記移動制御ノードを介して前記ゲートウェイ装置に送信する、請求項33または34に記載の基地局装置。 - 基地局装置から移動制御ノードを介して、当該基地局装置の近隣の基地局装置の発アドレスの情報を受信する受信部を有する、ゲートウェイ装置。
- 前記近隣の基地局装置の発アドレスの情報を保存する記憶部と、
無線通信装置がハンドオーバした移動先の基地局装置から受信したパケットデータの発アドレスを、前記記憶部に保存された発アドレスと照合する制御部と、をさらに有する、請求項36に記載のゲートウェイ装置。 - 前記受信部は、
前記移動先の基地局装置から、当該移動先の基地局装置の発アドレスの情報を受信し、
前記制御部は、
前記移動先の基地局装置から受信したパケットデータの発アドレスと一致する発アドレスが前記記憶部にない場合、前記受信したパケットデータの発アドレスを、前記移動先の基地局装置から受信した発アドレスと照合する、請求項37に記載のゲートウェイ装置。 - 前記制御部は、
前記移動先の基地局装置から受信したパケットデータの発アドレスと一致する発アドレスが前記記憶部にないことを検出した後、一定期間内に前記移動先の基地局装置から受信したパケットデータをバッファに保存し、
前記ゲートウェイ装置は、さらに、
前記一定期間内に、前記移動先の基地局装置から受信した発アドレスが前記受信したパケットデータの発アドレスと一致した場合、その時点で、前記バッファに保存したパケットデータを上位ノードに転送する送信部を有する、請求項38に記載のゲートウェイ装置。 - 前記移動先の基地局装置から受信したパケットデータの発アドレスと一致する発アドレスが前記記憶部にないことを検出した後、一定期間内に前記移動先の基地局装置から受信したパケットデータを上位ノードに転送する送信部をさらに有する、請求項38に記載のゲートウェイ装置。
- 基地局装置から、当該基地局装置の前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを受信する受信部を有する、ゲートウェイ装置。
- 前記近隣の基地局装置の発アドレスの情報を保存する記憶部と、
無線通信装置がハンドオーバした移動先の基地局装置から受信したパケットデータの発アドレスを、前記記憶部に保存された発アドレスと照合する制御部と、をさらに有する、請求項41に記載のゲートウェイ装置。 - 基地局装置から移動制御ノードを介して、無線通信装置が当該基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を受信する受信部を有する、ゲートウェイ装置。
- 前記移動先の基地局装置の発アドレスの情報を保存する記憶部と、
前記移動先の基地局装置から受信したパケットデータの発アドレスを、前記記憶部に保存された発アドレスと照合する制御部と、をさらに有する、請求項43に記載のゲートウェイ装置。 - 基地局装置と上位ゲートウェイ装置との間に接続されたゲートウェイ装置であって、
無線通信装置が前記ゲートウェイへの変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置の発アドレスの情報を、前記上位ゲートウェイ装置に送信する送信部を有する、ゲートウェイ装置。 - 前記送信部は、
前記移動制御ノードからのベアラ生成要求に応答して、前記ゲートウェイ装置の発アドレスの情報を前記上位ゲートウェイ装置に送信する、請求項45に記載のゲートウェイ装置。 - 前記送信部は、
前記基地局装置がハンドオーバを命令するメッセージを前記無線通信装置に送信する前に、前記ゲートウェイ装置の発アドレス情報を前記上位ゲートウェイ装置に送信する、請求項45または46に記載のゲートウェイ装置。 - 基地局装置に接続されたゲートウェイ装置と接続された上位ゲートウェイ装置であって、
無線通信装置が前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置から、前記ゲートウェイ装置の発アドレスの情報を受信する受信部を有する、上位ゲートウェイ装置。 - 前記ゲートウェイ装置の発アドレスの情報を保存する記憶部と、
前記ゲートウェイ装置から受信したパケットデータの発アドレスを、前記記憶部に保存された発アドレスと照合する制御部と、をさらに有する、請求項48に記載の上位ゲートウェイ装置。 - 基地局装置による無線通信方法であって、
前記基地局装置の近隣の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信ステップを有する、無線通信方法。 - 基地局装置による無線通信方法であって、
前記基地局装置の近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを、ゲートウェイ装置に送信する送信ステップを有する、無線通信方法。 - 基地局装置による無線通信方法であって、
無線通信装置が前記基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を、移動制御ノードを介してゲートウェイ装置に送信する送信ステップを有する、無線通信方法。 - ゲートウェイ装置による無線通信方法であって、
基地局装置から移動制御ノードを介して、当該基地局装置の近隣の基地局装置の発アドレスの情報を受信する受信ステップを有する、無線通信方法。 - ゲートウェイ装置による無線通信方法であって、
基地局装置から、当該基地局装置の前記近隣の基地局装置の発アドレスの情報をヘッダに含むパケットデータを受信する受信ステップを有する、無線通信方法。 - ゲートウェイ装置による無線通信方法であって、
基地局装置から移動制御ノードを介して、無線通信装置が当該基地局装置からハンドオーバした移動先の基地局装置の発アドレスの情報を受信する受信ステップを有する、無線通信方法。 - 基地局装置と上位ゲートウェイ装置との間に接続されたゲートウェイ装置による無線通信方法であって、
前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置の発アドレスの情報を、前記上位ゲートウェイ装置に送信する送信ステップを有する、無線通信方法。 - 基地局装置に接続されたゲートウェイ装置と接続された上位ゲートウェイ装置による無線通信方法であって、
無線通信装置が前記ゲートウェイ装置への変更を伴うハンドオーバをする旨の決定があった後に、前記ゲートウェイ装置から、前記ゲートウェイ装置の発アドレスの情報を受信する受信ステップを有する、無線通信方法。
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US20100329208A1 (en) | 2010-12-30 |
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JP5163658B2 (ja) | 2013-03-13 |
US9271195B2 (en) | 2016-02-23 |
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