WO2010071133A1 - 移動通信方法、無線基地局、無線回線制御局、コアネットワーク装置及びゲートウェイ装置 - Google Patents
移動通信方法、無線基地局、無線回線制御局、コアネットワーク装置及びゲートウェイ装置 Download PDFInfo
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- WO2010071133A1 WO2010071133A1 PCT/JP2009/070914 JP2009070914W WO2010071133A1 WO 2010071133 A1 WO2010071133 A1 WO 2010071133A1 JP 2009070914 W JP2009070914 W JP 2009070914W WO 2010071133 A1 WO2010071133 A1 WO 2010071133A1
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- base station
- connection state
- satisfied
- predetermined condition
- request signal
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- 238000010295 mobile communication Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000004044 response Effects 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 description 29
- 230000006870 function Effects 0.000 description 13
- 238000004891 communication Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
Definitions
- the present invention relates to a mobile communication method, a radio base station, a radio network controller, a core network device, and a gateway device.
- a mobile station performs desired communication in an “offload connection state” in which a mobile station is connected to a server device or the like in the Internet via the small wireless base station without going through a core network device. ing.
- the core network device in the mobile communication system can reduce the processing load.
- the present invention has been made in view of the above-described problems, and a mobile communication method, a radio base station, a radio network controller, and a mobile communication method capable of flexibly changing a connection method between a mobile station and a server device,
- An object is to provide a core network device and a gateway device.
- a first feature of the present invention is a mobile communication method, which is transmitted by a mobile station in a first connection state, which is a state of being connected to an access point of a first network via a radio base station and a core network device.
- step A for determining whether or not a predetermined condition is satisfied, and if it is determined that the predetermined condition is satisfied, the connection state of the mobile station is determined as the first connection.
- step B of switching from a state to a second connection state that is a state of being connected to an access point of the second network via the radio base station without going through the core network device.
- a second feature of the present invention is a mobile communication method, which is transmitted by a mobile station in a first connection state, which is a state of being connected to an access point of a first network via a radio base station and a core network device.
- step A for determining whether or not a predetermined condition is satisfied, and if the wireless base station determines that the predetermined condition is satisfied, the process goes through the core network device.
- step B of starting a bearer setting procedure with the access point of the second network.
- a third feature of the present invention is a radio base station, which is transmitted by a mobile station in a first connected state that is connected to an access point of the first network via the radio base station and a core network device.
- a determination unit configured to determine whether or not a predetermined condition is satisfied according to the connection request signal, and connection of the mobile station when it is determined that the predetermined condition is satisfied Switching requesting to switch the state from the first connection state to the second connection state that is connected to the access point of the second network via the radio base station without passing through the core network device
- the gist of the present invention is to include a switching request signal transmission unit configured to transmit a request signal.
- a fourth feature of the present invention is a radio base station, which is transmitted by a mobile station in a first connection state in which the radio base station is connected to an access point of the first network via the radio base station and a core network device.
- a determination unit configured to determine whether or not a predetermined condition is satisfied in response to the connection request signal, and when determining that the predetermined condition is satisfied, the core network device
- a bearer control unit configured to start a bearer setting procedure with the access point of the second network without intervening.
- a fifth feature of the present invention is a radio network controller disposed between a radio base station and a core network device, which serves as an access point of the first network via the radio base station and the core network device.
- a determination unit configured to determine whether or not a predetermined condition is satisfied in response to a connection request signal transmitted by the mobile station in the first connection state which is in a connected state; and the predetermined condition The mobile station is connected from the first connection state to the access point of the second network via the radio base station without going through the core network device.
- a switching request signal transmission unit configured to transmit a switching request signal for requesting switching to the second connection state, which is a state of being connected The gist.
- a sixth feature of the present invention is a core network device, which is transmitted by a mobile station in a first connection state, which is a state in which the core network device is connected to an access point of the first network via the core network device.
- a determination unit configured to determine whether or not a predetermined condition is satisfied according to the connection request signal, and connection of the mobile station when it is determined that the predetermined condition is satisfied Starting a procedure for switching the state from the first connection state to the second connection state in which the state is connected to the access point of the second network via the radio base station without going through the core network device.
- a switching processing unit configured as described above.
- a seventh feature of the present invention is a gateway device, which is transmitted by a mobile station in a first connection state, which is a state in which the gateway device is connected to an access point of the first network via a radio base station and a core network device.
- a determination unit configured to determine whether or not a predetermined condition is satisfied according to a connection request signal, and when determining that the predetermined condition is satisfied, the connection state of the mobile station The procedure for switching from the first connection state to the second connection state in which the wireless network is connected to the access point of the second network via the radio base station without going through the core network device is started. And a switching processing unit.
- a mobile communication method a radio base station, a radio network controller, a core network device, and a gateway device that can flexibly change the connection method between the mobile station and the server device. Can be provided.
- FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
- FIG. 2 is a functional block diagram of the radio base station according to the first embodiment of the present invention.
- FIG. 3 is a sequence diagram showing operations of the mobile communication system according to the first embodiment of the present invention.
- FIG. 4 is a functional block diagram of a radio network controller according to the second embodiment of the present invention.
- FIG. 5 is a sequence diagram showing operations of the mobile communication system according to the second embodiment of the present invention.
- FIG. 6 is a functional block diagram of a core network device according to the third embodiment of the present invention.
- FIG. 7 is a sequence diagram showing operations of the mobile communication system according to the third embodiment of the present invention.
- FIG. 8 is a sequence diagram showing operations of the mobile communication system according to the first modification of the present invention.
- the mobile communication system includes a radio base station BTS, a radio network controller RNC, a core network device CN, access points APN # 1, APN # 2, and a server device 10. , 20.
- the server device 10 is a first server device provided in a dedicated network (operator network, first network) provided by an operator (communication carrier) so as to provide operator-provided site display data.
- the server device 20 is a second server device provided in a public data communication network (second network) such as the Internet, and is configured to provide website display data. Yes.
- the server device 10 and the server device 20 are configured to have a Web server function, a database server function, a VoIP server function, and the like.
- the access point APN # 1 is a server device that functions as an access point to an operator network (for example, FOMA (registered trademark) network), and the access point APN # 2 is a server that functions as an access point to a public data communication network. Device.
- FOMA registered trademark
- the mobile communication system according to the present embodiment may be a WCDMA mobile communication system or an LTE (Long Term Evolution) mobile communication system.
- LTE Long Term Evolution
- the function of the radio network controller RNC is arranged in the core network device CN and the radio base station eNodeB.
- the core network device CN in the present embodiment an exchange or the like is assumed.
- the function of the core network device CN and the function of the radio network controller RNC may be arranged in the radio base station BTS, or may be arranged in the gateway devices HNB-GW and HeNB-GW.
- the mobile station UE is connected to the access point APN # 1 via the radio base station BTS, the radio network controller RNC, and the core network device CN.
- Connection state that is, in the “on-load connection state”
- the operator-provided site display data is received from the server device 10 via the bearer set between the radio base station BTS and the access point APN # 1. Can be received.
- the mobile station UE is in a connection state B (first connection state) in which the mobile station UE is connected to the access point APN # 1 via the radio base station BTS, the radio network controller RNC, and the core network device CN. That is, in the “on-load connection state”, the website display data can be received from the server device 20 via the bearer set between the radio base station BTS and the access point APN # 1.
- the mobile station UE is connected to the access point APN # 2 via the radio base station BTS without passing through the radio network controller RNC and the core network device CN (second connection status C2). ), That is, in the “off-load connection state”, the Web site display data is received from the server device 20 via the bearer set between the radio base station BTS and the access point APN # 2. Can do.
- the radio base station BTS may be a small radio base station such as a femtocell radio base station (for example, Home-eNB) or a macrocell radio base station. .
- the radio base station BTS includes a connection request signal reception unit 11, a determination unit 12, a switching request signal transmission unit 13, a connection request signal transfer unit 14, and a bearer control unit 15. ing.
- the connection request signal receiving unit 11 is configured to receive a connection request signal (for example, an HTTP signal) for a specific server device transmitted by the mobile station UE.
- a connection request signal for example, an HTTP signal
- the determination unit 12 is configured to determine whether or not a predetermined condition is satisfied according to the connection request signal received by the connection request signal reception unit 11.
- the determination unit 12 satisfies the predetermined condition when the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information. It may be configured to determine.
- the determination unit 12 receives, as a connection request signal transmitted by the mobile station UE in the connection state A or B, an HTTP signal addressed to a server device in the Internet that provides predetermined website display data. In this case, it may be configured to determine that a predetermined condition is satisfied.
- the determination unit 12 may be configured to determine that a predetermined condition is satisfied when the access form between the radio base station BTS and the Internet is a predetermined form.
- the determination unit 12 when the access line between the radio base station BTS and the Internet is not an ISDN line, or when the bandwidth of the access line between the radio base station BTS and the Internet exceeds a predetermined value, the determination unit 12
- the access form between the radio base station BTS and the Internet may be a predetermined form, that is, it may be configured to determine that a predetermined condition is satisfied.
- the switching request signal transmission unit 13 is configured to transmit a switching request signal to the core network device CN when the determination unit 12 determines that the predetermined condition is satisfied.
- the switching request signal is a signal requesting to switch the connection state of the mobile station UE from the connection state A or B to the connection state C.
- the switching request signal transmission unit 13 is a case where the determination unit 12 determines that the predetermined condition is satisfied, and the user of the mobile station UE performs a predetermined operation (for example, input of predetermined information on the display screen).
- the switch request signal may be transmitted to the core network device CN only when an operation or the like is performed.
- the radio base station BTS may have a function of selecting whether or not to switch the connection state of the mobile station UE from the connection state A or B to the connection state C.
- a function may be selected by the user on the display screen of the mobile station UE, selected as a response to the LED display in the mobile station UE, or selected as a response to the audio output in the mobile station UE. You may let them.
- connection request signal transfer unit 14 is configured to transfer the connection request signal received by the connection request signal reception unit 11 according to the connection state of the mobile station UE.
- connection request signal transfer unit 14 sends the connection request signal received by the connection request signal reception unit 11 to the core via a predetermined bearer. It is configured to transfer to the network device CN or the access point APN # 1.
- connection request signal transfer unit 14 sends the connection request signal received by the connection request signal reception unit 11 to the access point APN via a predetermined bearer. It is configured to forward to # 2.
- connection request signal transfer unit 14 determines the connection request according to the destination address information included in the connection request signal.
- the connection request signal received by the signal receiving unit 11 may be configured to be transferred to either the connection state B bearer or the connection state C bearer.
- the bearer control unit 15 is configured to set bearers for the connection states A to C.
- the bearer for the connection state A and the bearer for the connection state B are bearers set between the radio base station BTS and the access point APN # 1
- the bearer for the connection state C is the radio base station. It is a bearer set between the station BTS and the access point APN # 2.
- the mobile station UE in the connection state A or B displays the operator providing site provided by the server device 10 in step S1001, or is provided by the server device 20.
- the website A is displayed, in step S1002, a connection request signal for the website B provided by the server device 20 is transmitted to the radio base station BTS.
- the radio base station BTS determines whether or not a predetermined condition is satisfied. For example, the radio base station BTS determines whether or not the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information.
- the radio base station BTS transmits a switching request signal to the radio network controller RNC in step S1004.
- the radio base station BTS transfers the received connection request signal to the radio network controller RNC.
- step S1005 the radio network controller RNC transfers the received switching request signal to the core network device CN.
- step S1006 the core network device CN starts a procedure for switching the connection state of the mobile station UE to the connection state C by transmitting a “RAB Assignment Request” message to the radio network controller RNC.
- step S1007 the radio network controller RNC transmits a “Radio Link Reconfiguration Prepare” message to the radio base station BTS in response to the received “RAB Assignment Request” message.
- step S1008 the radio base station BTS performs a procedure of switching the connection state of the mobile station UE from the connection state A or B to the connection state C in response to the “Radio Link Reconfiguration Prepare” message.
- step S1009 the radio base station BTS transmits a “Radio Link Reconfiguration Ready” message to the radio network controller RNC.
- step S1010 the radio network controller RNC transmits a “Radio-Link Reconfiguration Committee” message to the radio base station BTS.
- step S1011 the radio network controller RNC transmits a “Radio Bearer Reconfiguration” message to the mobile station UE.
- step S1012 the mobile station UE transmits a “Radio Bearer Reconfiguration Complete” message to the radio network controller RNC.
- step S1013 the radio network controller RNC transmits a “RAB Assignment Response” message to the core network device CN.
- step S1014 the mobile station UE displays the Web site provided by the server device 20 in the connection state C.
- the radio equipment control device RNC or the gateway device HNB-GW receives the switching request signal and switches the connection state of the mobile station UE to the connection state C in response to the switching request signal.
- a procedure may be started.
- the “offload connection state” is actively used by switching the access point APN to which the mobile station UE is connected without disconnecting the communication. And the processing load on the core network device can be reduced.
- the “offload connection state” is positively switched by switching the access point APN to which the mobile station UE is connected without disconnecting the communication.
- the mobile station UE can display a website in the Internet that is seamless and inexpensive.
- the mobile station UE automatically “offload connection state” in communication with home appliances in the home domain to which the radio base station BTS belongs. Can be used.
- Mobile communication system according to the second embodiment of the present invention With reference to FIG.4 and FIG.5, the mobile communication system which concerns on the 2nd Embodiment of this invention is demonstrated.
- the mobile communication system according to the present embodiment will be described while focusing on differences from the mobile communication system according to the first embodiment described above.
- the radio network controller RNC includes a connection request signal receiver 21, a determination unit 22, a switching request signal transmitter 23, a connection request signal transfer unit 24, and a bearer controller 25. is doing.
- the mobile station UE in the connection state A or B displays the operator providing site provided by the server device 10 in step S3001 or is provided by the server device 20.
- the website A is displayed, in step S3002, a connection request signal for the website B provided by the server device 20 is transmitted to the radio base station BTS.
- step S3003 the radio base station BTS transfers the received connection request signal to the radio network controller RNC.
- the radio network controller RNC determines whether or not a predetermined condition is satisfied. For example, the radio network controller RNC determines whether or not the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information.
- the radio network controller RNC transmits a switching request signal to the core network device CN in step S3005.
- steps S3006 to S3014 are the same as those in steps S1006 to S1014 shown in FIG.
- the gateway devices HNB-GW and HeNB-GW receive the switching request signal, and switch the connection state of the mobile station UE to the connection state C according to the switching request signal.
- the procedure may begin.
- Mobile communication system according to the third embodiment of the present invention With reference to FIG.6 and FIG.7, the mobile communication system which concerns on the 3rd Embodiment of this invention is demonstrated. Hereinafter, the mobile communication system according to the present embodiment will be described while focusing on differences from the mobile communication system according to the first embodiment described above.
- the core network device CN includes a connection request signal reception unit 31, a determination unit 32, a switching processing unit 33, and a connection request signal transfer unit 34.
- the connection request signal receiving unit 31 is configured to receive the connection request signal transferred by the radio network controller RNC, similarly to the connection request signal receiving units 11 and 12 described above.
- the determination unit 32 is configured to determine whether or not a predetermined condition is satisfied according to the connection request signal received by the connection request signal reception unit 31. Yes.
- the switching processing unit 33 is configured to perform a procedure for switching the connection state of the mobile station UE. For example, the switching processing unit 33 starts a procedure for switching the connection state of the mobile station UE from the connection state A or B to the connection state C when the determination unit 32 determines that the predetermined condition is satisfied. It is configured as follows.
- connection request signal transfer unit 34 is configured to transfer the connection request signal received by the connection request signal reception unit 31 to the access point APN # 1 via a predetermined bearer.
- gateway device HNB-GW may be configured to have the function of the core network device CN shown in FIG.
- the mobile station UE in the connection state A or B displays the operator providing site provided by the server device 10 in step S5001 or is provided by the server device 20.
- the website A is displayed, in step S5002, a connection request signal for the website B provided by the server device 20 is transmitted to the radio base station BTS.
- step S5003 the radio base station BTS transfers the received connection request signal to the radio network controller RNC.
- step S5004 the radio network controller RNC transfers the received connection request signal to the core network device CN.
- step S5005 the core network device CN determines whether or not a predetermined condition is satisfied. For example, the core network device CN determines whether or not the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information.
- step S5006 the core network device CN transmits a “RAB Assignment Request” message to the radio network controller RNC, thereby connecting the mobile station UE.
- the procedure for switching to the connection state C is started.
- steps S5007 to S5014 are the same as those in steps S1007 to S1014 shown in FIG.
- the gateway devices HNB-GW and HeNB-GW determine whether or not the predetermined condition is satisfied, and when determining that the predetermined condition is satisfied, the mobile station UE A procedure for switching the connection state to the connection state C may be started.
- Modification 1 of the present invention With reference to FIG. 8, a mobile communication system according to Modification 1 of the first to third embodiments of the present invention will be described. Hereinafter, the mobile communication system according to the first modification will be described while paying attention to differences from the mobile communication systems according to the first to third embodiments.
- the bearer control unit 15 determines the bearer for the connection state A and the bearer for the connection state B when the determination unit 12 determines that the predetermined condition is satisfied. You may be comprised so that the setting procedure of the bearer for connection state C may be started, without releasing.
- the connection request signal transfer unit 14 sends a connection request signal addressed to the server device 20 to the connection state C. Even if it is configured to transfer to the access point APN # 1 via the bearer for the connection state B when such transfer fails after transfer to the access point APN # 2 via the bearer Good.
- connection request signal transfer unit 14 failed to transfer the connection request signal addressed to the server device 20 to the access point APN # 1 via the bearer for the connection state B.
- it may be configured to transfer to the access point APN # 2 via the bearer for the connection state C.
- connection request signal transfer unit 14 gives priority to the access point APN # 1 or APN # 2 as a transfer destination of the connection request signal addressed to the server device 20, and based on the priority.
- the connection request signal addressed to the server device 20 may be configured to determine which of the access points APN # 1 or APN # 2 should be transferred.
- connection request signal transfer unit 14 stores a transfer result of the connection request signal addressed to the server device 20 to the access point APN # 1 or APN # 2, and transfers the connection request signal addressed to the server device 20 in the past. May be configured to preferentially transfer to the access point APN # 1 or APN # 2.
- the mobile station UE in the connection state A or B displays the operator-provided site provided by the server device 10 in step S7001 or is provided by the server device 20.
- a connection request signal for the website B provided by the server device 20 is transmitted to the radio base station BTS.
- the radio base station BTS determines whether or not a predetermined condition is satisfied. For example, the radio base station BTS determines whether or not the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information.
- the radio base station BTS When it is determined in step S7004 that the predetermined condition is satisfied, the radio base station BTS does not release the bearer for the connection state A and the bearer for the connection state B, and does not release the bearer for the connection state C. Start the setup procedure.
- a first feature of the present embodiment is a mobile communication method, which is connected to an access point APN # 1 of an operator network (first network) that provides an operator providing site via a radio base station BTS and a core network device CN.
- the radio base station BTS determines whether or not a predetermined condition is satisfied, and in step B, the radio base station BTS satisfies the predetermined condition.
- the core network device CN, the radio network controller RNC or the gateway device HNB-GW starts the procedure for switching the connection state of the mobile station UE in response to the switch request signal. May be.
- step A the radio network controller RNC arranged between the radio base station BTS and the core network device CN determines whether or not a predetermined condition is satisfied.
- Step B when the radio network controller RNC determines that the predetermined condition is satisfied, the switching request signal is transmitted, and the core network device CN or the gateway device HNB-GW responds to the switching request signal.
- the connection state switching procedure of the mobile station UE may be started.
- step A the core network device CN or gateway device HNB-GW determines whether or not a predetermined condition is satisfied, and in step C, the core network device CN or gateway device.
- the HNB-GW determines that the predetermined condition is satisfied, the procedure for switching the connection state of the mobile station UE may be started.
- the predetermined condition is satisfied when the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information. May be determined.
- the access form between the radio base station BTS and the Internet (second network) is a predetermined form, it may be determined that the predetermined condition is satisfied.
- the second feature of the present embodiment is a mobile communication method, and a step of determining whether or not a predetermined condition is satisfied according to a connection request signal transmitted by a mobile station UE in connection state A or B And A, when the radio base station BTS determines that the predetermined condition is satisfied, includes a step C of starting a bearer setting procedure with the access point APN # 2 without going through the core network device CN This is the gist.
- the third feature of the present embodiment is the radio base station BTS, which determines whether or not a predetermined condition is satisfied according to the connection request signal transmitted by the mobile station UE in the connection state A or B
- the gist is to include a switching request signal transmission unit 13 configured to transmit a signal.
- the determination unit 12 determines whether or not the predetermined condition is satisfied when the destination address information included in the connection request signal transmitted by the mobile station UE in the connection state A or B is the predetermined address information. It may be configured to determine that is satisfied.
- the determination unit 12 is configured to determine that a predetermined condition is satisfied when the access mode between the radio base station BTS and the Internet is a predetermined mode. Also good.
- the fourth feature of the present embodiment is the radio base station BTS, which determines whether or not a predetermined condition is satisfied according to a connection request signal transmitted by the mobile station UE in the connection state A or B When determining that the predetermined condition is satisfied with the determination unit 12 configured as described above, the bearer setting procedure is started with the access point APN # 2 without passing through the core network device CN.
- the gist is to include a configured bearer control unit 15.
- the fifth feature of the present embodiment is a radio network controller RNC arranged between the radio base station BTS and the core network device CN, and the connection transmitted by the mobile station UE in the connection state A or B
- the determination unit 22 configured to determine whether or not the predetermined condition is satisfied, and when determining that the predetermined condition is satisfied, the connection state of the mobile station UE is
- the gist of the invention is that it includes a switching request signal transmission unit 23 configured to transmit a switching request signal for requesting switching from the connection state A or B to the connection state C.
- the sixth feature of the present embodiment is the core network device CN, which determines whether or not a predetermined condition is satisfied according to the connection request signal transmitted by the mobile station UE in the connection state A or B
- the determination unit 32 configured as described above and the predetermined condition are determined to be satisfied, the procedure for switching the connection state of the mobile station UE from the connection state A or B to the connection state C is started.
- the gist of the present invention is to include a switching processing unit 33 configured.
- a sixth feature of the present embodiment is the gateway device HNB-GW, which determines whether or not a predetermined condition is satisfied according to a connection request signal transmitted by the mobile station UE in the connection state A or B
- the determination unit 32 configured to perform the procedure for switching the connection state of the mobile station UE from the connection state A or B to the connection state C when it is determined that the predetermined condition is satisfied.
- a switching processing unit 33 configured as described above.
- the operations of the mobile station UE, the radio base station BTS, the radio network controller RNC, the core network device CN, and the gateway device HNB-GW described above may be implemented by hardware, or a software module executed by a processor. Or may be implemented by a combination of both.
- Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in an arbitrary format storage medium such as a CD-ROM.
- the storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor. Further, such a storage medium and a processor may be provided in the ASIC. Such an ASIC may be provided in the mobile station UE, the radio base station BTS, the radio network controller RNC, the core network device CN, or the gateway device HNB-GW. Further, the storage medium and the processor may be provided as a discrete component in the mobile station UE, the radio base station BTS, the radio network controller RNC, the core network device CN, or the gateway device HNB-GW.
Abstract
Description
図1及び図2を参照して、本発明の第1の実施形態に係る移動通信システムの構成について説明する。
図3を参照して、本発明の第1の実施形態に係る移動通信システムの動作について説明する。
本発明の第1の実施形態に係る移動通信システムによれば、通信を切断することなく、移動局UEが接続するアクセスポイントAPNを切り替えることによって、積極的に「オフロード接続状態」を利用することができ、コアネットワーク装置における処理負荷を軽減することができる。
図4及び図5を参照して、本発明の第2の実施形態に係る移動通信システムについて説明する。以下、本実施形態に係る移動通信システムについて、上述の第1の実施形態に係る移動通信システムとの相違点について着目して説明する。
図6及び図7を参照して、本発明の第3の実施形態に係る移動通信システムについて説明する。以下、本実施形態に係る移動通信システムについて、上述の第1の実施形態に係る移動通信システムとの相違点について着目して説明する。
図8を参照して、本発明の第1乃至第3の実施形態の変更例1に係る移動通信システムについて説明する。以下、本変更例1に係る移動通信システムについて、上述の第1乃至第3の実施形態に係る移動通信システムとの相違点について着目して説明する。
Claims (14)
- 無線基地局及びコアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定する工程Aと、
前記所定条件が満たされていると判定された場合、前記移動局の接続状態を、前記第1接続状態から、前記コアネットワーク装置を介することなく前記無線基地局を介して第2ネットワークのアクセスポイントに接続している状態である第2接続状態に切り替える工程Bとを有することを特徴とする移動通信方法。 - 前記工程Aにおいて、前記無線基地局が、前記所定条件が満たされているか否かについて判定し、
前記工程Bにおいて、前記無線基地局が、前記所定条件が満たされていると判定した場合に、切替要求信号を送信し、前記コアネットワーク装置、無線回線制御局又はゲートウェイ装置が、該切替要求信号に応じて、前記移動局の接続状態の切替手順を開始することを特徴とする請求項1に記載の移動通信方法。 - 前記工程Aにおいて、前記無線基地局と前記コアネットワーク装置との間に配置されている無線回線制御局が、前記所定条件が満たされているか否かについて判定し、
前記工程Bにおいて、前記無線回線制御局が、前記所定条件が満たされていると判定した場合に、切替要求信号を送信し、前記コアネットワーク装置又はゲートウェイ装置が、該切替要求信号に応じて、前記移動局の接続状態の切替手順を開始することを特徴とする請求項1に記載の移動通信方法。 - 前記工程Aにおいて、前記コアネットワーク装置又はゲートウェイ装置が、前記所定条件が満たされているか否かについて判定し、
前記工程Bにおいて、前記コアネットワーク装置又は前記ゲートウェイ装置が、前記所定条件が満たされていると判定した場合に、前記移動局の接続状態の切替手順を開始することを特徴とする請求項1に記載の移動通信方法。 - 前記第1接続状態の移動局によって送信された接続要求信号に含まれている宛先アドレス情報が所定アドレス情報である場合に、前記所定条件が満たされていると判定されることを特徴とする請求項1乃至4のいずれか一項に記載の移動通信方法。
- 前記無線基地局と前記第2ネットワークとの間のアクセス形態が所定形態である場合、前記所定条件が満たされていると判定されることを特徴とする請求項1乃至4のいずれか一項に記載の移動通信方法。
- 無線基地局及びコアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定する工程Aと、
前記無線基地局が、前記所定条件が満たされていると判定した場合、前記コアネットワーク装置を介することなく前記第2ネットワークのアクセスポイントとの間でベアラの設定手順を開始する工程Bとを有することを特徴とする移動通信方法。 - 無線基地局であって、
前記無線基地局及びコアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定するように構成されている判定部と、
前記所定条件が満たされていると判定した場合に、前記移動局の接続状態を、前記第1接続状態から、該コアネットワーク装置を介することなく前記無線基地局を介して第2ネットワークのアクセスポイントに接続している状態である第2接続状態に切り替えるように要求する切替要求信号を送信するように構成されている切替要求信号送信部とを具備することを特徴とする無線基地局。 - 前記判定部は、前記第1接続状態の移動局によって送信された接続要求信号に含まれている宛先アドレス情報が所定アドレス情報である場合に、前記所定条件が満たされていると判定するように構成されていることを特徴とする請求項8に記載の無線基地局。
- 前記判定部は、前記無線基地局と前記第2ネットワークとの間のアクセス形態が所定形態である場合、前記所定条件が満たされていると判定するように構成されていることを特徴とする請求項8に記載の無線基地局。
- 無線基地局であって、
前記無線基地局及びコアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定するように構成されている判定部と、
前記所定条件が満たされていると判定した場合に、前記コアネットワーク装置を介することなく第2ネットワークのアクセスポイントとの間でベアラの設定手順を開始するように構成されているベアラ制御部とを具備することを特徴とする無線基地局。 - 無線基地局とコアネットワーク装置との間に配置されている無線回線制御局であって、
前記無線基地局及びコアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定するように構成されている判定部と、
前記所定条件が満たされていると判定した場合に、前記移動局の接続状態を、前記第1接続状態から、該コアネットワーク装置を介することなく前記無線基地局を介して第2ネットワークのアクセスポイントに接続している状態である第2接続状態に切り替えるように要求する切替要求信号を送信するように構成されている切替要求信号送信部とを具備することを特徴とする無線回線制御局。 - コアネットワーク装置であって、
無線基地局及び前記コアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定するように構成されている判定部と、
前記所定条件が満たされていると判定した場合に、前記移動局の接続状態を、前記第1接続状態から、前記コアネットワーク装置を介することなく前記無線基地局を介して第2ネットワークのアクセスポイントに接続している状態である第2接続状態に切り替える手順を開始するように構成されている切替処理部とを具備することを特徴とするコアネットワーク装置。 - ゲートウェイ装置であって、
無線基地局及びコアネットワーク装置を介して第1ネットワークのアクセスポイントに接続している状態である第1接続状態の移動局によって送信された接続要求信号に応じて、所定条件が満たされているか否かについて判定するように構成されている判定部と、
前記所定条件が満たされていると判定した場合に、前記移動局の接続状態を、前記第1接続状態から、前記コアネットワーク装置を介することなく前記無線基地局を介して第2ネットワークのアクセスポイントに接続している状態である第2接続状態に切り替える手順を開始するように構成されている切替処理部とを具備することを特徴とするゲートウェイ装置。
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