CN102364976B - Interworking circuit service fallback - Google Patents

Abstract

The invention relates to interworking circuit service fallback. Technology, a device and a system comprise mechanisms capable of realizing the coordination of circuit service fallback.

Description

Interworking circuit service fallback

Background

Presents relates to wireless interworking technology communication in a wireless communication system.

Wireless communication system can comprise the network with one or more base stations of one or more wireless device communication, one or more wireless device such as mobile device, cell phone, wireless network card, travelling carriage (MS), subscriber equipment (UE), accesses terminal (AT) or subscriber station (SS).The radio signal of carrying such as voice data and other data contents is launched in each base station to wireless device.Base station can be called as access point (AP) or access network (AN), or can be included as a part for access network or base station sub-system (BSS).In addition, wireless communication system can comprise the core network with one or more base station communication.Base station can to one or more wireless device transmission radio signal on forward link (FL), and forward link (FL) is also referred to as down link (DL).Wireless device can to one or more base-station transmission radio signal on reverse link (RL), and reverse link (RL) is also referred to as up link (UL).

The wireless technology for communicating that wireless device can use one or more different.The various examples of wireless technology comprise code division multiple access (CDMA), High Rate Packet Data (HRPD), the HRPD (eHRPD) of evolution, universal mobile telecommunications system (UMTS), the Universal Terrestrial Radio Access Network (UTRAN) of such as CDMA2000 1x), the UTRAN (E-UTRAN) of evolution, Long Term Evolution (LTE) and micro-wave access global inter communication (WiMAX).

General introduction

Presents particularly depict the technology for interworking circuit service fallback (interworking circuit service fallback) among other things.

In one aspect, can comprise for the technology of interworking circuit service fallback, device and system and communicating with first network based on the first wireless technology; Communicate with the switching center corresponding to second network based on the second wireless technology, wherein switching center is configured to process the message for one or more equipment over the second network; And according to the second wireless technology, in just transaction message between the wireless device and switching center of the enterprising Serial Communication of first network.Transaction message can comprise on a first network with wireless device communication.

In yet another aspect, can comprise according to the first wireless technology and base station communication for the technology of wireless communication system, device and system; And according to the second wireless technology, with the interoperability services transaction message of just carrying out with the switching center be associated with the second wireless technology communicating.SMS (Short Message Service) (SMS) message can be comprised by the message of concluding the business.Paging information can be comprised by the message of concluding the business.Wireless device can be initiated from first network switching to second network.Switching center can initiate from first network switching to second network.

In yet another aspect, wireless communication system can comprise the circuit communicated with first network based on the first wireless technology; Based on the circuit that second wireless technology different from the first wireless technology communicates with the switching center corresponding to second network, wherein switching center is configured to process the message for one or more equipment over the second network; And between the wireless device communicated just on a first network and switching center, transmit the circuit of transaction message based on the second wireless technology, wherein transaction message comprise on a first network with wireless device communication.

In another embodiment again, wireless communication system can comprise the circuit based on the first wireless technology and base station communication; And based on the circuit of second wireless technology different from the first wireless technology with the interoperability services transaction message just communicated with the switching center be associated with the second wireless technology.

The details of one or more embodiment proposes in adjoint content of enclosing, accompanying drawing and following description.From description and accompanying drawing and accessory rights requirement, other feature will be obvious.

Accompanying drawing is sketched

Fig. 1 shows the embodiment of interworking architecture benchmark model.

Fig. 2 shows the embodiment of universal multiple virtual link interoperability services structure.

Fig. 3 shows the embodiment of the multiple virtual link interoperability services structure switching rollback for 1x circuit.

Fig. 4 shows another embodiment of the multiple virtual link interoperability services structure switching rollback for 1x circuit.

Fig. 5 shows the embodiment for switching the multiple virtual interoperability services structure of rollback from the 1x circuit of HRPD.

Fig. 6 shows the embodiment of the interworking protocol stack for multiple virtual link interworking architecture.

Fig. 7 shows another embodiment of the interworking protocol stack for multiple virtual link interworking architecture.

Fig. 8 shows the embodiment of the interworking protocol stack of the interworking architecture for having the interoperability services integrated with Mobility Management Entity.

Fig. 9 shows the embodiment for switching the 1x signal adaptation agreement wireless device status transition diagram of rollback from the circuit of LTE.

Figure 10 shows the embodiment for switching the 1x signal adaptation agreement wireless device status transition diagram of rollback from the circuit of HRPD.

Figure 11 shows the embodiment that 1x signal sends adapting protocol 1x Transfer Message.

Figure 12 shows the embodiment that 1x shifts acknowledge message.

Figure 13 shows the embodiment that 1x shifts refuse information.

Figure 14 shows the embodiment that 1x circuit switches rollback message.

Figure 15 shows the embodiment that 1x circuit switches rollback registration call flow.

The 1x circuit that Figure 16 shows for mobile device end call switches rollback calling.

Figure 17 shows another embodiment of the 1x circuit switching rollback call-flow for mobile device end call.

Figure 18 shows another embodiment of the 1x circuit switching rollback call-flow for mobile device end call.

Figure 19 shows 1x circuit and switches rollback mobile device and to make a call another embodiment of stream.

Figure 20 shows 1x circuit and switches rollback mobile device and to make a call another embodiment of stream.

Figure 21 shows 1x circuit and switches rollback mobile device and to make a call the embodiment of stream.

Figure 22 shows the embodiment of communication process.

Figure 23 shows for the embodiment of CSFB with the interworking architecture of enhancing CSFB (eCSFB).

Figure 24 shows the embodiment of the enhancing GCSNA agreement of the newer field comprising CDMA2000 cell information.

Figure 25 shows the embodiment of the intercommunication registration formula for 1x CSFB.

Figure 26 shows the embodiment of the intercommunication MT call-flow for CSFB.

Figure 27 shows the embodiment that the intercommunication for eCSFB is registered.

Figure 28 shows the embodiment of calling out formula when independent interoperability services (IWS) for the intercommunication MO of eCSFB.

Figure 29 shows when integrated IWS-1xBS for embodiment that the intercommunication MO of eCSFB calls out.

Figure 30 shows the embodiment of calling out formula when independent IWS for the intercommunication MT of eCSFB.

Figure 31 shows when integrated IWS-1xBS for embodiment that the intercommunication MT of eCSFB calls out.

Because traditional voice service develops to data center services, the second generation (2G), the third generation (3G) and forth generation (4G) cordless communication network, such as CDMA2000, to Long Term Evolution of future generation (LTE) evolution based on OFDM and MIMO technology.LTE can provide larger network capacity and peak data rate, and has the less stand-by period for data, services.This is crucial for user concerning the experience of data, services.But due to the high efficiency of CDMA technology in voice service, CDMA2000 1x network still can be used to provide voice service, even LTE network be widely deployed and after several years by use after be also like this.Therefore, CDMA2000 1x circuit switching and packet switching network and LTE network are by long-term co-existence.Wireless communication system can provide one or more intercommunication mechanism, and to be used in the intercommunication coexisted of multi-technology networks, the such as intercommunication of CDMA2000 1x and LTE, becomes smooth.

Can implement intercommunication mechanism between CDMA2000 1x and LTE, such as single wireless phone voice call continuity (SRVCC) intercommunication mechanism and 1x circuit switch rollback (CSFB) mechanism.SRVCC intercommunication mechanism will travelling carriage shift out LTE coverage but still in CDMA2000 1x network coverage time, by the voice call (VOIP) of addressing from LTE network, and switch to CDMA2000 1x network.This approach supposition IMS is widely deployed in the core network of operator, and VOIP provides main voice service by being used to.

In 1x CSFB, when travelling carriage is connected to LTE network for data, services, mobile switching centre (MSC) in the cdma 2000 network can mobile paging station to carry out voice service (such as mobile device stop (MT) calling), or user may want to use Mobile Origination voice call ((MO) calling initiated by such as mobile device).Because single radio is shared by Multiple techniques such as CDMA2000 and LTE, thus travelling carriage must travelling carriage must rollback to CDMA2000 1x network with after carrying out voice service, by its radio from LTE frequency adjustment to CDMA2000 1x frequency.During 1x CSFB, data, services on an LTE network can be stopped.

Presents describes for the technology of the intercommunication between different wireless technologys, device and system, and except other, in particular disclose the details and embodiment that relate to interworking circuit service fallback (CSFB).CSFB mechanism can erect bridge, to allow the communication between two or more technology between the wireless technology that two or more are different.Such as, can by such as producing message based on the second wireless technology and passing through RTTY transmitting messages according to the first wireless technology, rollback to the second wireless technology with the wireless device of the first wireless technology operation.In another embodiment, wireless device is connected to LTE network and is intended to receive the paging from CDMA2000 1x MSC or SMS, or SMS is sent to CDMA2000 1x network, wireless device can use technology described herein, communicates with CDMA2000 1x based on message on an LTE network.In certain embodiments, with first wireless technology operation wireless device can by by the protocol encapsulation of the second wireless technology in the transmission payload be associated with the first wireless technology, rollback to the second wireless technology.

The various examples can implementing the wireless communication system of technology of the present invention and system especially comprise the wireless communication system based on following technology inter alia: the code division multiple access (CDMA) of such as CDMA2000 1x, High Rate Packet Data (HRPD), the HRPD (eHRPD) of evolution, universal mobile telecommunications system (UMTS), Universal Terrestrial Radio Access Network (UTRAN), the UTRAN (E-UTRAN) of evolution, Long Term Evolution (LTE) and micro-wave access global inter communication (WiMAX).Such as, wireless communication system can comprise one or more network based on CDMA and one or more network based on LTE.

Fig. 1 shows the embodiment of interworking architecture reference model.In this reference model, the wireless device of such as UE can attach to E-UTRAN network, to receive service from LTE network.1x CSFB interoperability services (IWS) bridge joint Mobility Management Entity (MME) and 1x RTT MSC, make 1x MSC can communicate on an LTE network with wireless device.During wireless device is connected to LTE network, IWS may be used for tunnel and transmits 1x registration message, SMS and the hand off direction message for VOIP.When 1x MSC needs paging wireless device, it can send paging request message by IWS, MME and E-UTRAN tunnel to wireless device.After paging receiving request message, rollback is continued 1x circuit-switched call to 1x network by wireless device.Except the CSFB called out for MT, wireless device can rollback to CDMA2000 1x network to carry out MO calling.

Wireless communication system can provide the intercommunication based on using universal multiple virtual link interoperability services (GMVL-IWS) structure.GMVL-IWS structure can provide the mechanism of encapsulation wireless network protocol.

Fig. 2 shows the embodiment of universal multiple virtual link interoperability services (GMVL-IWS) structure.System 200 based on GMVL-IWS structure can comprise one or more multi-mode wireless device 210, CDMA2000 base station 220, eNodeB 230, network control node 240, IWS, MME 243, gateway (S-GW) 250, mobile switching centre (MSC) 280, PDSN/HRPD gateway (HSGW) 270 and grouped data network gateway (PDN-GW) 260.

Multi-mode wireless device 210 can be provided to the wireless connections of different wireless technology networks.CDMA2000 base station 220 comprises CDMA2000 1x radio device 221 and CDMA2000 HRPD radio device 222.CDMA2000 base station 220 uses CDMA2000 1x technology and HRPD technology to provide voice-and-data service by dedicated radio link to wireless device 210.ENodeB 230 is the wireless base stations in LTE network, connects to provide radio (such as LTE-Uu) to wireless device 210.In certain embodiments, the circuit for CDMA2000 base station 220 is integrated with the circuit for eNodeB 230.In certain embodiments, radio control unit can implement multi radio access technology, such as LTE and CDMA2000.In certain embodiments, base station controller (BSC) can comprise policy control functions (PCF).

Network control node 240 can comprise BSC/PCF 241, IWS 242 and MME 243.BSC/PCF 241 is the base station controllers for being controlled CDMA2000 base station 220 by Abis interface.MME 243 is for the network entity by S1-MME interface control eNodeB 230.IWS 242 is configured to support different wireless technology intercommunications.IWS 242 is connected to BSC/PCF 241 by A21 interface.IWS 242 is connected to MME 243 by S102 interface.IWS 242 can transmit CDMA2000 1x message by A1 interface tunnel between wireless device 210 and MSC 280.

S-GW 250 can provide the packet routing function in LTE network.S-GW 250 can be connected to eNodeB 230 by S1-U interface.S-GW can be connected to MME 243 by S11 interface.MSC 280 can provide the service of the mobile voice in circuit-switched network.The such as gateway of PDSN/HSGW 270 is gateways of the CDMA2000 radio access network for being connected to LTE core network network.PDSN/HSGW 270 can be connected to BSC/PCF 241 by A10/A11 interface.PDSN/HSGW 270 can be connected to S-GW 250 by S103 interface.PDN-GW 260 is connected to S-GW 250 by S5 interface.

Multiple virtual link interoperability services structure is provided in 1x CSFB framework general in different wireless technologys.The virtual link that IWS can be provided between one or more wireless technology network is connected.GMVL-IWS can be supported in one or more logical channels between the switching center of such as MSC 280 and wireless device 210 based on the first wireless technology.

Different embodiments and the deployment of multiple virtual link interoperability services structural support interoperability services are selected.

Fig. 3 shows the embodiment of the multiple virtual link interoperability services structure for 1x CSFB.This structure can support wireless technology rollback, and such as LTE is to the rollback of 1x.In the present embodiment, IWS 242 is integrated in BSC/PCF node 241.The IWS of BSCization (BSC-lite) can be called as by integrated BSC and IWS.When IWS 242 is integrated in BSC 241, it can use A1/A2 or the A1p/A2p interface in BSC, and to be connected to MSC 280, thus tunnel transmits CDMA2000 1x message between MSC 280 and wireless device 210.A1 interface between IWS 242 and MSC 280 can and A1 interface between BSC 241 and MSC 280 share.In certain embodiments, IWS 242 is the isolated nodes being configured to provide 1x CSFB to serve.

Fig. 4 shows another embodiment of the multiple virtual link interoperability services structure for 1x CSFB.In the present embodiment, IWS 242 is integrated in MME 243, and interface S102 is the internal interface between IWS 242 and MME 243.This structure can support wireless technology rollback, and such as LTE is to the rollback of 1x.

Fig. 5 shows the embodiment of the multiple virtual interoperability services structure for the 1x CSFB from HRPD.In the present embodiment, the A21 interface between BSC 241 and IWS 242 is internal interface.IWS 242 can use A1/A2 or the A1p/A2p interface of BSC 241 to be connected to MSC 280, thus tunnel transmits CDMA2000 1x message between MSC 280 and wireless device 210.A1 interface between IWS 242 and MSC 280 can and A1 interface between BSC 241 and MSC 280 share.This structure can support wireless technology rollback, and such as HRPD is to the rollback of 1x.

In certain embodiments, BSC, IWS and MME are jointly integrated in single network node.Therefore, relevant interface, such as A21 and S102, will become the internal interface of network node 240.IWS 242 can use A1/A2 or A1p/A2p interface to transmit CDMA2000 1x message with tunnel between MSC 280 and wireless device 210.

Multiple virtual link intercommunication can provide 1x signal adaptation agreement (SAP).1x SAP can be provided in the tunneling mechanisms between 1x MSC and wireless device.

Fig. 6 shows the embodiment of the interworking protocol stack of the multiple virtual link interworking architecture for BSCization.Fig. 7 shows the embodiment of the interworking protocol stack for independent multiple virtual link interworking architecture.Fig. 8 shows the embodiment of the interworking protocol stack of the interworking architecture for having the IWS integrated with MME.

IWS can use interworking protocol stack to communicate with multi-mode wireless device.In certain embodiments, interworking protocol stack can comprise general 1x signal adaptation agreement (1x SAP).General 1x SAP can be provided in the handoff functionality between wireless technology, and can encapsulation messages, such as CDMA2000 1x message, such as registration, SMS (Short Message Service) (SMS) and/or paging information.

General 1x SAP can be provided in the multiple virtual link of the 1x logical channel (f/r-csch or f/r-dsch) between wireless device and the BSC/MSC on CDMA2000 1x network.When multi-mode wireless device 210 is connected to LTE network, the general 1x SAP on wireless device 210 is used to provide on an LTE network by the virtual link of IWS 242 to MSC 280.When multi-mode wireless device 210 is connected to HRPD network, the general 1x SAP on wireless device 210 is used to provide on HRPD network by the virtual link of IWS 242 to MSC 280.Logical channel field in general 1x SAP message may be used for packed message to be associated with CDMA2000 1x logical channel (f/r-csch or f/r-dsch), thus is formed into the virtual link of upper layer logic passage.

Fig. 9 shows the embodiment of the 1x signal adaptation agreement wireless device status transition diagram for the CSFB from LTE.When initiating, 1x SAP mechanism enters 1x state.In 1x state, radio module is adjusted to CDMA2000 1x frequency.In certain embodiments, CDMA2000 1x top signaling can directly connect through 1x.Based on the web search priority be configured in RUIM/SIM card or the contiguous technical information broadcasted in CDMA2000 1x Overhead Message, wireless device can be attached network.If LTE network has the priority higher than CDMA2000 network, so wireless device searches for LTE network by starting.Otherwise, multi-mode wireless device can attach to 1x network.

Assuming that wireless device will attach to LTE network.After leaving 1x state, single radio is on the wireless device adjusted to LTE frequency and general 1x SAP can enter the state of setting when sending RRC and connecting.If RRC is connected, so general 1x SAP can enter tunnel delivery status, and in tunnel delivery status, general 1x SAP can transmit CDMA2000 1x message by LTE network tunnel.If RRC connection failure, so general 1x SAP can be back to 1x state from the state of setting.General 1x SAP can rest on tunnel delivery status, until RRC is released or 1x SAP receives 1x CSFB order and is then back to 1x state.

If wireless device does not find LTE signal, so equipment can be back to and attach to 1x network.Equipment can periodically regulate away from 1x to scan LTE signal, and this depends on the configuration that network is selected.

Figure 10 shows the embodiment of the 1x signal adaptation agreement wireless device status transition diagram for the CSFB from HRPD.When initialization, 1x SAP mechanism enters 1x state.If wireless device is configured with the HRPD network with higher-priority, so its radio can be switched to HRPD by wireless device, and general 1x SAP can enter when it determines search HRPD network the state of setting, and connection request (ConnectionRequest) message is sent out.If be opened to the connection of HRPD, so general 1x SAP will enter tunnel delivery status, and wireless device can pass through HRPD network delivery 1x message.Otherwise general 1x SAP will be back to 1x state.General 1x SAP will remain in tunnel delivery status, be closed, and be then back to 1x state until HRPD connects.

Multi-mode wireless device can use general 1x SAP state to determine the dedicated radio link of CDMA2000 1x or LTE or HRPD.When general 1x SAP is in 1x state, radio is adjusted to 1x frequency.When general 1x SAP is in other states, radio can be connected to LTE or HRPD network, the configuration of this selection Network Based and network availability.If network selecting priority order that is that configure in RUIM/SIM or that broadcast in overhead system parameter is LTE, HRPD and 1x, so first wireless device can make great efforts to attempt to attach to LTE.If to the attachment success of LTE network, so wireless device can rest in the connection with LTE, is released or CSFB to 1x network until connect.

GMVL-IWS can be provided for the mechanism of the CDMA2000 1x rollback from different technical networks.In certain embodiments, GMVL-IWS can meet 3GPP LTE and CDMA2000 1x CSFB structure.1x-SAP mechanism may be used for the information that carrying is relevant to 1x between different technology, to support LTE or WiMAX 1x CSFB.GMVL-IWS can provide embodiment flexibly to select.

Figure 11 shows the embodiment of 1x SAP1x Transfer Message.1xSAP1x Transfer Message can be used to encapsulation CDMA2000 1x message.In 1x Transfer Message, message id is used to identify 1x Transfer Message.As disclosed herein, 1x SAP can support based on the message detection be replicated and confirm transmitting again of (ACK).The message that MessageSequence and ACKRequired field is used to be replicated detects and transmits.If need the message be replicated detect and transmit, so ACKRequired field is set to " 1 " and MessageSequence field is set to more than the MessageSequence field of last message requiring the confirmation sent by transmit leg one by transmit leg.1x logical channel territory is used to indicate packed 1x message carried through the logical channel in local CDMA 2000 1x network.This field is set to " 0 " by the wireless device as transmit leg, if packed 1x signaling is transmitted by virtual r-csch; Or be set to " 1 ", if transmitted by virtual r-dsch.This field can be set to " 0 " by the IWS as transmit leg, if packed signaling is transmitted by virtual f-csch; Or be set to " 1 ", if transmitted by virtual f-dsch.1xSignalingLength and 1xSignaling field defines the container of carrying 1x signaling.1xSignaling field comprises CDMA2000 1x signaling Paclcet Data unit (PDU), and the length of CDMA2000 1x signaling Paclcet Data unit (PDU) is arranged by 1xSignalingLength field.

There is the Mutiple Choice using 1x SAP to carry CDMA2000 1x message, as described herein.One is selected to be specify general 1x SAP only can carry one group of 1x message for 1x registration, SMS, MO and MT calling.Two are selected to be do not limit any 1x message carried by general 1x SAP.If use selection one, so 1x SAP is required that each message for being transmitted by logical channel performs special filtering function.If message is not encapsulated in list at general 1x SAP and is defined, so general 1x SAP can send 1x and shift refuse information.

Communication based on 1x SAP can comprise 1x and shift acknowledge message, 1x transfer refuse information and 1x CSFB message.

Figure 12 shows the embodiment that 1x shifts acknowledge message.If require that the message be replicated detects and transmits, so recipient can send 1x to transmit leg and shift acknowledge message.

Figure 13 shows the example that 1x transmits refuse information.If 1x SAP does not support transmission 1x message, then receiver can send 1x transmission refuse information to transmitter.

Figure 14 shows the example of 1x CSFB message.Last signaling that 1x CSFB message is used to indicate wireless device in tunnel by IWS switches when exchanging gets back to CDMA2000 1x network.

Wireless communication system can be provided for the mechanism that 1x CSFB registers.In some implementations, require that wireless device is at CDNA2000 1x network registry, like this when wireless device is connected to LTE network, 1xMSC can find this wireless device.When wireless device is registered at MSC by IWS, IWS can treat as the network node similar with BSC by MSC.When wireless device receives circuit-switched data call, MSC can send the IWS that paging request is registered to wireless device by it.

When wireless device detects that registration area changes or Band Class information changes, 1x registration process will be triggered.Registration area information and Band Class information are by the SIB-8 information broadcast of eNodeB or by the CDMA2000 1x system parameters clean culture of eNodeB from IWS.When wireless device is connected to LTE network, and move on to a different IWS from sent 1x registration by it previous one, will require that this wireless device is registered again.If turn back to LTE network back to the wireless device of the 1x network for 1x circuit switching equipment, then will require that this wireless device is registered to 1x MSC again.In order to trigger 1x registration, different registration areas or different Band Class can be configured in from IWS by the local CDMA 2000 1x network of eNodeB clean culture and CDMA 2000 system parameters.

Figure 15 shows the example of 1x CDFB registration call flow process.1501, wireless device is connected to the LTE network being in active state.1502, wireless device detects registration area or Band Class changes.1503, wireless device sends packaged 1x by eNodeB and MME via LTE tunnel and is registered to IWS.Position updating request is sent to MSC/VLR at 1504, IWS.Response is upgraded to IWS at 1505, MSC/VLR response position.Can be wireless device at 1506, IWS to keep this positional information and send registration via LTE tunnel accepting instruction to wireless device.1507, once wireless device changes its connection status at LTE, MME can send event notice to IWS and be transferred to MSC.MSC can use this information trace wireless device.Event notice is sent an acknowledgement at 1508, MSC.

As 16C shows the example of the 1x CSFB call flow for mobile terminal calling.Wireless device has completed the registration to CDMA2000 1x network, and 1601, wireless device is connected to LTE network.1x system parameters is broadcasted with SIB-8 at 1602, MME.Wireless device receives and stores this parameter.1603, based on track record, 1x MSC is aware of wireless device and is connected to LTE network and sends paging request message to IWS.1x circuit-switched page is sent to wireless device by MME and eNodeB via LTE tunnel at 1604, IWS.Wireless device is in the situation of LTE free time, IWS sends 1x circuit-switched page by 1x BTS.1605, wireless device sends expansion service request message and gets back to CDMA2000 1x network to MME to indicate switching.MME can send 1x CSFB and notify IWS.Send 1x CSFB parameter at 1606, IWS by eNOdeB and obtain CDMA2000 1x signal to wireless device to help wireless device.1607, MME release and reboot wireless device to CDMA2000 1x network.1608, wireless device can use stored 1x system information to regulate its radio to 1x frequency.1609, wireless device sends 1x page response to IWS via 1x BTS.1610, wireless device and 1x BTS perform 1x mobile terminal calling creation facilities program (CFP).Event notice is sent to notify that MME wireless device is just being connected to 1x network by IWS at 1611,1x MSC.Response is sent based on event notice at 1612, MME.

Figure 17 shows another example of the 1x CSFB call flow for mobile terminal calling.This example uses lightweight BSC IWS (BSC-Lite IWS).In this example, 1x CSFB call flow is optimized by the traffic channel assignment message via LTE network tunnel transmission page response and expansion with the call set-up time reducing mobile terminal.1701, wireless device completes the registration of phase 1x network and is connected to LTE network.1x system parameters is broadcasted with SIB-8 at 1702, MME.Wireless device receives and stores 1x system parameters.Page response is sent to IWS at 1703,1x MSC.

1x circuit-switched page is sent to wireless device by MME and eNodeB via LTE tunnel at 1704, IWS.Wireless device is in the situation of LTE free time, IWS sends 1x circuit-switched page by 1x BTS.Pilot Measurement Request can be sent to wireless device via tunnel at 1705, IWS.1706,1x BTS pilot signal measured by wireless device in measurement clearance.1707, wireless device via LTE tunnel in the Power Measurement Report Message (PMRM) report measurement results to IWS.1708, wireless device sends 1x page-response message to IWS and MSC via LTE tunnel.

Send at 1709, MSC and distribute request to IWS.The channel assignment message (ECAM) of expansion is sent to 1x BTS at 1710, IWS.Based on ECAM, 1x BTS radio resource allocated to set up Traffic Channel in BTS side to reduce call set-up time.Send ECAM at 1711, IWS via tunnel and set up Traffic Channel to wireless device with request.In some implementations, IWS sends 1xCSFB order to trigger 1xSAP switching.In some implementations, wireless device triggers this switching automatically by himself.Based on reception ECAM, 1712, the service request information that wireless device sends expansion is switched to CDMA2000 1x network to MME with instruction.Discharge this connection at 1713, MME and send connection release message to wireless device.

1714, wireless device is switched to the 1x Traffic Channel of being distributed by 1x BTS.Notify that MME wireless device is just being connected to 1x network at 1715,1x MSC via IWS.This notice is replied to MSC via S102 interface at 1716, MME.

Figure 18 shows another example of the 1x CSFB call flow for mobile terminal calling.This example uses independent IWS.1801, wireless device completes the registration to 1x network and is connected to LTE network.1x system parameters is broadcasted with SIB-8 at 1802, MME.Wireless device receives and stores this 1x system parameters.Paging request is sent to IWS at 1803,1x MSC.

1x circuit-switched page is sent to wireless device by MME and eNodeB via LTE tunnel at 1804, IWS.Wireless device is in the situation of LTE free time, IWS sends 1x circuit-switched page by 1x BTS.Pilot Measurement Request can be sent to wireless device via tunnel at 1805, IWS.1806,1x BTS pilot signal measured by wireless device in measurement clearance.1807, wireless device via LTE tunnel in PMRM report measurement results to IWS.At 1808a, wireless device sends 1x page-response message to IWS and MSC via LTE tunnel.

Page-response message can be sent to 1xBTS/BSC at 1808b, IWS.In some instances, the message comprising PMRM information is sent at 1808b, IWS.Send at 1809a, MSC and distribute request to IWS.Can pass at 1809b, IWS and distribute request to 1xBTS.A7-paging service transmission message can be sent to IWS at 1809c, 1xBTS/BSC.In some implementations, BSC constructs ECAM and A7-paging service transmission message transmission ECAM to IWS.ECAM to 1x BTS is sent to divide the radio resource being used in the Traffic Channel of BTS side to reduce call set-up time at 1810, BSC.Send ECAM at 1811, IWS via tunnel and set up Traffic Channel to wireless device with request.In some implementations, IWS sends 1xCSFB order to trigger 1xSAP switching.In some implementations, wireless device triggers this switching automatically by himself.Based on reception ECAM, 1812, the service request information that wireless device sends expansion is switched to CDMA2000 1x network to MME with instruction.Discharge this connection at 1813, MME and send connection release message to wireless device.

1814, wireless device is switched to the 1x Traffic Channel of being distributed by 1x BTS.Notify that MME wireless device is just being connected to 1x network at 1815,1x MSC via IWS.This notice is replied to MSC via S102 interface at 1816, MME

Figure 19 shows the call flow that 1xCSFB moves initiation.This example realizes relevant to BSC-Lite IWS.1901, wireless device completes the registration to 1x network and is connected to LTE network.1x system parameters is broadcasted with SIB-8 at 1902, MME.Wireless device receives and stores them.1903, wireless device determines to set up 1xCSFB for initiation.1904, wireless device sends expansion service request message and gets back to cdma2000 1x network to MME to indicate switching.MME can send the notification to IWS.Send 1xCSFB parameter by tunnel via eNodeB at 1905, IWS and obtain 1x signal to wireless device to help wireless device.1906, MME release and reboot wireless device to CDMA2000 1x network.1907, wireless device uses the 1x system information stored to regulate its radio to 1x frequency.1908, wireless device and 1x BTS perform mobile calling order of initiating to set up Traffic Channel.Notify that MME wireless device is just being connected to CDMA2000 1x network at 1909,1x MSC by IWS.This notice is replied at 1910, MME.

Figure 20 shows another example that 1xCSFB moves the call flow of initiation.This example is relevant to BSC-Lite IWS.This call flow sends some 1x message by LTE via tunnel and optimizes to reduce delay in call establishment the calling that 1xCSFB moves initiation.2001, wireless device completes the registration to 1x network and is connected to LTE network.1x system parameters is broadcasted with SIB-8 at 2002, MME.Wireless device receives and stores this system parameters.2003, wireless device determines to set up CDMA2000 1x network for MO calling or via 1x Traffic Channel transmission SMS.2004,1x BS pilot signal measured by wireless device in measurement clearance.

2005, if it is in idle condition, wireless device can send service request.2006, wireless device sends 1x initial request messages (ORM) to IWS and MSC via tunnel.2007, wireless device via tunnel in PMRM report measurement results to IWS.Send at 2008, MSC and distribute request to IWS.Send ECAM message at 2009, IWS and set up Traffic Channel to optimize call set-up time to 1xBTS with radio resource allocated and in BTS side.Send ECAM at 2010, IWS via tunnel and set up Traffic Channel to wireless device with request.In some implementations, IWS sends 1xCSFB order to trigger 1xSAP switching.In some implementations, wireless device determines this switching automatically by himself.2011, based on reception ECAM message, the service request information that wireless device sends expansion is switched to CDMA2000 1x network to MME with instruction.Connection release message is sent to discharge this connection at 2012, MME.

2013, wireless device is switched to 1x Traffic Channel.Notify that MME wireless device is just being connected to CDMA2000 1x network at 2014,1x MSC via IWS.This notice is replied at 2015, MME.

Figure 21 shows the example that 1xCSFB moves the call flow of initiation.This example is relevant to independent IWS.This call flow sends some 1x message by LTE via tunnel and optimizes to reduce delay in call establishment the calling that 1xCSFB moves initiation.2101, wireless device completes the registration to 1x network and is connected to LTE network.1x system parameters is broadcasted with SIB-8 at 2102, MME.Wireless device receives and stores this system parameters.2103, wireless device determines to set up CDMA2000 1x network for MO calling or via 1x Traffic Channel transmission SMS.2104,1x BS pilot signal measured by wireless device in measurement clearance.

2105, if it is in idle condition, wireless device can send service request.2106, wireless device sends 1x initial request messages (ORM) to IWS and MSC via tunnel.2107, wireless device via tunnel in PMRM report measurement results to IWS.Send at 2108a, MSC and distribute request to IWS.This distribution can be passed at 2108b, IWS and ask 1xBSC.

2109, ask based on this distribution, 1xBSC constructs ECAM and sends ECAM to IWS via A7 interface.1xBSC/BTS can set up Traffic Channel in BTS side.2110, pass on ECAM to wireless device to ask to set up Traffic Channel based on reception this ECAM, IWS via tunnel.In some implementations, IWS sends 1xCSFB order to trigger 1xSAP switching.In some implementations, wireless device determines this switching automatically by himself.

2111, based on reception ECAM message, the service request information that wireless device sends expansion is switched to CDMA2000 1x network to MME with instruction.Connection release message is sent to discharge this connection at 2112, MME.

2113, wireless device is switched to 1x Traffic Channel.Notify that MME wireless device is just being connected to CDMA2000 1x network at 2114,1x MSC via IWS.This notice is replied at 2115, MME.

Figure 22 shows an example of communication process.Communication process can comprise and communicates (2205) with first network based on the first wireless technology.The second wireless technology that communication process can comprise based on being different from the first wireless technology is carried out communicate (2210) with the switching center corresponding to second network.Communication process can comprise based on the second wireless technology Transaction Information (2215) between wireless device and switching center, and described wireless device communicates on a first network.

As mentioned above, new cordless communication network, such as, forth generation (4G) communication network is based on OFDM and MIMO technology and emphasize data, services.Due to the spectral efficient of CDMA technology in voice service, even if after coming years 4G network extensively adopts and uses, CDMA2000 1x net still can be used for providing voice service.Therefore, CDMA2000 1x circuit-switched network and 4G LTE network coexist the time that will have one longer.

In order to be provided for multi-technology networks coexist cooperatively interact stably, 1x circuit switched fallback (CSFB) can be used in the network of the operator also not adopting the IMS for VOIP service.CSFB can provide the method keeping voice and data network to separate.When wireless device is connected to LTE network for data, services, CDMA2000 1x network (MSC) can find the mobile radio station for voice service (MT calling), or wireless device for may want initiate audio call (MO calling).Due to the radio shared by multiple technology such as CDMA2000 and LTE, return to CDMA2000 1x network with after performing voice service at wireless device, wireless device must by its radio from LTE frequency adjustment to CDMA2000 1x frequency.During 1xCSFB, the data, services via LTE network can be stopped.

The technology, device and the system that are used for making cooperatively interacting between the different wireless technology making circuit service rollback (CSFB) and the CSFB (eCSFB) that strengthens cooperatively interact are described with lower part.CSFB or eCSFB mechanism can make two or more different wireless technology connect to allow to communicate between two or more technology.

Figure 23 shows the exemplary interworking architecture for CSFB and eCSFB.This example comprises multiple module.Multi-mode mobile station/access terminal/UE2310 is a wireless device being connected to different wireless technology networks.Comprising CDMA2000 1x wireless CDMA2000 base station 2320 uses CDMA2000 1x technology to provide voice-and-data service via the aerial connection to wireless device 2310.ENodeB 2330 is that the wireless base station in LTE network is connected to wireless device 2310 to provide via aerial (LTE-Uu).Node 2320 and 2330 is functional entitys, and can realize at single framework (shelf) or at different physical nodes.This example also comprises the network control node 2340 as functional entity, comprises BSC/PCF2341, IWS2342 and MME2343.BSC/PCF2341 is a base station controller, and it is for by Abis interface control CDMA2000 base station 2320.MME2343 is for the network entity via S1-MME interface control eNodeB2330.Interoperability services (IWS) 2342 supports the network functional entity of different wireless technology intercommunications.IWS 2342 is connected to BSC/PCF2341 via A21 interface, and is connected to MME2343 via S102 interface.IWS can encapsulate and between wireless device and mobile switching centre 2380, exchange CDMA2000 1x message via A1 interface.

In addition, the example of Figure 23 comprises gateway (S-GW) 2350, and it is a network node providing the packet routing function in LTE network.Gateway 2350 is connected to eNodeB2330 via S1-U interface, and is connected to MME via S11 interface.Mobile switching centre 2380 is a network node and is included in the example of Figure 23 to provide mobile voice service in a circuit switched network.There is provided network node 2360 as the packet data network gateway (PDN-GW) in LTE network.This node is connected to S-GW2350 via S5 interface.

Interoperability services framework provides the general 1xCSFB framework between different wireless technologys.When wireless device is connected to LTE net, it can communicate via IWS and the CDMA2000 1x MSC in intercommunication CSFB framework.IWS will contact LTE and CDMA2000 1x network, encapsulation and exchange CDMA2000 1x message between wireless device 2310 and MSC 2380.

Community ID is used for by core network identification radio-cell.The MSC2380 left over follows the tracks of the position of wireless device via location area code (LAC), and its unit by wireless device registration (community ID) obtains.When wireless device 23 10 receives and sends registration message via CDMA2000 1x OTA chain, CDMA2000 BTS 2320 is forwarded to BSC2341.BSC2341 find out to Abis link relevant cell ID information, and use it to set up location update message via the A1 interface for MSC.Based on received location update message, MSC upgrades wireless device positional information in VLR and/or HLR.

In CDMA2000 1x and LTE intercommunication scene, community ID sets up the A1 message for MSC for IWS.Community ID in intercommunication scene can be used for performing various function.Such as, a function is the message that process is relevant to non-rollback corelation behaviour, and described non-rollback corelation behaviour such as processes 1x registration message or SMS.IWS needs to use the community ID relevant to IWS to set up the A1 message of such as location update message, and such MSC will know that wireless device is just being connected to LTE network and is using the LAC relevant to IWS to carry out paging by IWS to it.Due to this function and the BSC functional similarity left over, IWS obtains this cell ID information by suitable configuration.

Another exemplary functions of community ID in intercommunication CSFB is the behavior that process rollback is relevant, such as processes 1x page response or the message required by switching.IWS needs to use the community ID relevant to the 1x unit as object element to construct A1 message, like this when wireless device return back to CDMA2000 1x network, for MSC, can set up Traffic Channel at the CDMA2000 1x unit be applicable to.In this situation, need to provide the cell ID information relevant to CDMA2000 1x unit to IWS.

Therefore, the Cell ID that IWS needs Cell ID that CDMA2000 1x is relevant with two kinds of Cell ID:IWS in LTE intercommunication CSFB scheme relevant with CDMA2000 1x, to build A1 message for MSC.Existing Operability Specification has the following problem about obtaining and build Cell ID.

A) current A21-1x air interface signaling messages only has a Cell id field.If it is for being associated with IWS Cell ID, then comprise the relevant Cell ID of CDMA2000 1x without any other fields.Vice versa.

B) if wireless device moves to another place from the place of in LTE network, then it needs MME to follow the tracks of 1x cell information for each tunnel 1x information.In other words, LTE is not only provided for the tunnel of CDMA2000 1x message, also needs the CDMA2000 1x community that tracking wireless device can return back to.This is more complicated than imagined by making MME implement, and adds the complexity of intercommunication deployment.

C) wireless device needs the radio condition monitoring CDMA2000 1x network also to report to MME continually.If can not do like this, will be difficult to know with which CDMA2000 1x community exact correlation for MME and insert A21-1x message with reference to community id field.But in the eCSFB call flow of TS23.272,1x cell measurement reporting is optional.If wireless device can not provide it to want the accurate 1x cell information return back to, then MSC may need to set up communication channel in the multiple contiguous CDMA2000 1x community of the eNodeB be connected at wireless device.This will cause unnecessary waste of radio resources and the high failure rate of call setup.

D) IWS can be connected to traditional MSC.From the angle of MSC, not distinct between the A1 interface from BSC and the A1 interface from IWS.Therefore, traditional MSC180 possibly cannot distinguish the A1 message from BSC or IWS; And do not know whether wireless device is connected to LTE or CDMA2000 1x network.

For solving the above-mentioned and other problem relating to Cell ID in intercommunication CSFB and eCSFB, provided below is for registering, mobile device makes a call and the enforcement of some mechanism of mobile device end call program.

In an enforcement of CSFB intercommunication registration, such as, the wireless device with CSFB ability sends the CDMA2000 1x registration message with CDMA2000 1x cell information, and CDMA2000 1x cell information comprises 1x Cell ID and radio environment measurements.When receiving registration message through LTE tunnel from wireless device, the IWS being connected to traditional MSC should use CDMA2000 1x Cell ID and IWS Cell id information to transmit multiple location update message, makes traditional MSC that the position of wireless device can be kept to be mapped to the record of LTE network and CDMA2000 1x community by IWS.

CSFB MT is called out, when traditional MSC paging is connected to the wireless device of LTE network, traditional MSC uses multiple paging algorithm with the BSC in the paging zone multiple paging request message being sent to the IWS relevant to IWS Cell ID (LAC) and be correlated with CDMA2000 1x Cell ID.After LTE tunnel paging receiving request message, wireless device should return back to CDMA2000 1x network with transmitting paging response message to 1x MSC.MSC should send and distribute request to BSC, and it is from wireless device paging receiving response message.Then, BSC should send ECAM message, sets up for the communication channel on the CDMA2000 1x community of paging receiving response message.

For eCSFB intercommunication registration, the wireless device with eCSFB ability sends CDMA2000 1x log-on message, comprises the Cell ID only associating IWS.When receiving registration message through LTE tunnel from the wireless device with eCSBF ability, the IWS being connected to traditional MSC can use the IWS Cell ID of MSC to transmit single location update message, is mapped to the record of LTE network to keep the position of wireless device by IWS.

Call out for intercommunication eCSFB MO, before send CDMA2000 1x initiation message through LTE tunnel, the wireless device with eCSFB ability needs first tune-away CDMA2000 1x network, and the pilot signal strength of measure neighbor CDMA2000 1x community.Then wireless device turns back to LTE network and has the CDMA2000 1x initiation message of CDMA2000 1x cell information through LTE tunnel transmission, comprises CDMA2000 1x Cell ID and radio environment measurements.When IWS reception has the initiation message of CDMA2000 1x cell information, it can use IWS Cell ID to send service request information to 1x MSC, makes MSC only will respond IWS.When IWS receives allocation request message, it can send ECAM to wireless device without LTE tunnel.On the contrary, IWS establishment is assigned message and gets back to 1x MSC.Meanwhile, use CDMA2000 1x cell information is used for MSC as Target cell to construct CDMA2000 1x handover request message by IWS.Based on received CDMA2000 1x cell information, MSC sends handover request message to CDMA2000 1x BS to set up communication channel.Meanwhile, MSC sends switching command to IWS.Then IWS sets up UHDM message for wireless device with CDMA2000 1x cell information and it is sent through LTE tunnel.Once receive UHDM, release LTE connects and return back to CDMA2000 1x network by the wireless device with eCSFB ability.Wireless device and CDMA2000 1x network will follow accurate CDMA2000 1x call flow program to set up communication port.

Call out for intercommunication eCSFB MT, MSC paging can be connected to LTE network and through the wireless device of LTE tunnel to CDMA2000 1x network registry.After receiving the paging message, the wireless device with eCSFB ability needs tune-away CDMA2000 1x network and the pilot signal strength of measure neighbor CDMA2000 1x community.Then wireless device turns back to LTE network and has the CDMA2000 1x page-response message of CDMA2000 1x cell information through LTE tunnel transmission, comprises CDMA2000 1x Cell ID and radio environment measurements.When IWS receives the page-response message with CDMA2000 1x cell information, it uses IWS Cell ID that message is transmitted to 1x MSC, makes MSC only respond IWS.When IWS receives allocation request message from MSC, it can send ECAM to wireless device without LTE tunnel.On the contrary, IWS establishment is assigned message and gets back to 1x MSC.Meanwhile, use CDMA2000 1x cell information is used for MSC as Target cell to construct CDMA2000 1x handover request message by IWS.Based on received CDMA2000 1x cell information, MSC sends handover request message to CDMA2000 1x BS to set up communication channel.Meanwhile, MSC sends switching command to IWS, return back to CDMA2000 1x network with triggering wireless device.Once receive switching command, then IWS sets up UHDM message for wireless device, and it is sent through LTE tunnel.When receiving UHDM, release LTE connects and return back to CDMA2000 1x network by the wireless device with eCSFB ability.Wireless device and CDMA2000 1x network will follow accurate CDMA2000 1x call flow program to set up communication port.

In order to be provided for the further simplification of wireless device and effective mode to comprise CDMA2000 1x cell information, the newer field of CDMA2000 1x cell information is added in existing GCSNA interworking protocol.By this way, wireless device can comprise directly have CDMA2000 message as registration, initiate or the CDMA2000 1x cell information of page-response message.Be different from existing specification, CDMA2000 1x cell information can directly arrive IWS and not by MME process with CDMA2000 1x message through LTE tunnel.This will make intercommunication CSFB more decoupling and independence, and make MME design simplification.

Figure 24 illustrates the example of the enhancement mode GCSNA agreement of the newer field comprising CDMA2000 cell information.

Whether CellIDIncl field is used to indicate CellID and is included in GCSNA.If cell id field is included in this message, this field should be set to ' 1 ' by wireless device.Otherwise this field should be set to ' 0 ' by wireless device.It is ' 0 ' that IWS should arrange this field all the time.

NumCellIDs field is used to indicate CellID and is included in quantity in GCSNA.If CellIDIncl field is set to ' 1 ', then wireless device should comprise and arrange the quantity that this field is Cell ID.Otherwise transmitter should ignore this field.

Cell id field identification CDMA2000 1x community.It can be expressed as Pilot PN or Pilot PN phase.If NumCellIDs is not 0, then wireless device should arrange this field is the CDMA2000 1x community ID receiving from the SIB 8 of the eNodeB connected or measure.Otherwise mobile radio station should ignore this field.

Whether RadioMeasurementIncluded field is used to indicate radio measurements and is included in GCSNA.If NumCellIDs is not 0, and if CDMA2000 1x pilot frequency intensity measuring is included, then wireless device should arrange this field is 1.Otherwise if CDMA2000 1x pilot frequency intensity measuring is not included, then wireless device should arrange this field is 0.

PilotStrength field is used for Radio Measurement.If RadioMeasurementIncluded field is set to 1, then wireless device should comprise the CDMA2000 1x pilot frequency intensity measuring in this field.Otherwise wireless device should ignore this field.

Wireless device can use diverse ways to obtain CDMA2000 1x cell information.In the lte networks, the information of CDMA2000 1x community is broadcasted according to eNodeB SIB-8.Therefore, it is applicable to all wireless devices being connected to LTE network.

For improving CDMA2000 1x cell information, the wireless device being connected to LTE network from LTE tune-away, and can measure the pilot tone of the adjacent cell of CDMA2000 1x network.Based on the measurement in CDMA2000 1x network, wireless device can set up CDMA2000 1x cell information list, and when needs, they is directly transferred to IWS.

Figure 25 illustrates the example of the intercommunication accreditation process for 1x CSFB.

Step 301. wireless device is connected to LTE network and receives the information of CDMA2000 1x adjacent cell from the SIB-8 broadcasted by eNodeB.

The CDMA2000 1x registration message with the 1x CellID information be encapsulated in LTE UL information Transfer Message is transferred to MME by step 302. wireless device.

Step 303. is once receive the registration message of encapsulation, and it is just passed to IWS according to A21-1x interface signaling message by MME.

Step 304.IWS responds A21-Ack to confirm to receive A21-1x air interface signaling messages within Tack-21 second.

Step 305.IWS responds MME with the GCSNAAck be packaged in A21-1x air interface signaling messages, receives GCSNA message to indicate.

GCSNAAck is forwarded to wireless device through eNodeB by step 306.MME.

Simultaneously, MME is confirmed by A21-Ack message and IWS step 307., and A21-1x air interface signaling messages is received.

Step 308.IWS uses 1x CellID information to set up location update message, and is sent to MSC.

Step 309.MSC accepts message with location updating and responds IWS.

Step 310.IWS can obtain IWS Cell id information from configuration or GCSNA message, uses IWS CellID information set up location update message and be sent to MSC

Step 311.MSC accepts message with location updating and responds IWS.

Step 312. is after receiving the confirmation from MSC, and IWS sets up CDMA2000 1x registration and accepts message and be sent to MME by A21-1x air interface signaling messages.

Registration is accepted message and is forwarded to wireless device by step 313.MME in DL information Transfer Message

Step 314.MME and IWS confirms, A21-1x air interface signaling messages is received within Tack-21 second.

Step 315. accepts message once receive CDMA2000 1x registration, and the GCSNAAck be encapsulated in UL information Transfer Message is just transferred to MME by wireless device.

GCSNAAck message in A21-1x air interface signaling messages is transmitted to IWS by step 316.MME.

Step 317.IWS and MME confirms, A21-1x air interface signaling messages is received within Tack-21 second.

Figure 26 illustrates the example of the intercommunication MT call flow for CSFB.

Step 401. wireless device is connected to LTE network, and is registered to CDMA2000 1x MSC by the IWS indicating wireless device to be arranged in LTE network.

Step 402.CDMA2000 1x MSC by the position of log-on message identification wireless device, and uses IWS CellID (or LAC) to send paging request message.

Simultaneously, MSC sends identical paging request message to the 1x BS identified by the LAC relevant to the CDMA2000 1x community in registration message to step 403..By this way, 1x BS protocol processor can from wireless device waits page-response message.Otherwise 1x BS after it return back to CDMA2000 1x network, will abandon the page-response message received by wireless device sends.

Paging information to be encapsulated in GCSNA and to be sent to MME according to A21-1x air interface signaling messages by step 404.IWS.

GCSNA message in DL information Transfer Message is forwarded to wireless device through LTE air link by step 405.MME.

Step 406.MME with A21-Ack message response IWS, to confirm that it receives A21-1x air interface signaling messages.

Step 407. is once receive beep-page message through LTE tunnel, and wireless device just starts the disconnection with LTE network, and return back to CDMA2000 1x network.

Step 408. wireless device sends page-response message to 1x BS through CDMA2000 1x air interface.

Page-response message is passed to MSC by step 409.1x BS.

Then step 410, MSC send and distribute request to 1x BS to ask to set up for the Traffic Channel of wireless device.

Step 411,1x BS construct and activate business channel assignment message (ECAM) and be sent to wireless device by CDMA2000 1x air interface.

Step 412 is once receive ECAM, and wireless device is adjusted to CDMA2000 Traffic Channel and set up the communication with 1x BS.

Step 413, Traffic Channel set up after, 1x BS send be assigned message to MSC.

Figure 27 illustrates the embodiment that the intercommunication for eCSFB is registered.

Step 501, wireless device are attached to LTE network and receive the CDMA2000 1x information of adjacent cells of the SIB-8 that free eNodeB broadcasts.

The CDMA2000 1x registration message passed through tunnel in LTE UL information pass-along message is transferred to MME by step 502, wireless device.1x registration message also can comprise IWS cell ID information by GCSNA protocol encapsulation.

The registration message of the encapsulation that step 503, foundation receive, it is delivered to IWS with A21-1x interface signaling message by MME.

Step 504, IWS respond A21-Ack to confirm to receive A21-1x air interface signaling messages within Tack-21 second.

Step 505, the IWS GCSNAAck be encapsulated in A21-1x air interface signaling messages responds MME to indicate the reception of GCSNA message.

GCSNAAck point of journey is delivered to wireless device by step 506, MME on eNodeB.

Step 507, simultaneously, MME confirms to receive A21-1x air interface signaling messages by A21-Ack message and IWS.

Step 508, IWS use that receive from wireless device or pre-configured IWS cell ID information construction location updating message, and then send it to MSC.

Step 509, MSC location updating accept message response IWS.

Step 510, after MSC receives the confirmation, IWS constructs CDMA2000 1x registration and accepts message and be sent to MME by A21-1x air interface signaling messages.

Registration is accepted a message point journey and is delivered to wireless device by step 511, MME in DL information pass-along message.

Step 512, MME and IWS confirmed to receive A21-1x air interface signaling messages within Tack-21 second.

The registration encapsulated by GCSNA that step 513, foundation receive accepts message, and the GCSNAAck encapsulated in UL information pass-along message is transferred to MME by wireless device.

A GCSNAAck message point journey is delivered to IWS with A21-1x air interface signaling messages by step 514, MME.

Step 515, IWS and MME confirmed to receive A21-1x air interface signaling messages within Tack-21 second.

In some implementations, in registration message, provide the CDMA2000 1x cell information that is associated may be dispensable, this is because transmitted by LTE tunnel for page response eCSBF and some other 1x message.MSC only needs to know that the position of wireless device is can send paging request message.

Figure 28 illustrates the embodiment for the intercommunication MO calling procedure of eCSFB in independently IWS situation.

Step 601, there is the wireless device of eCSBF ability to be attached to LTE network and determine to perform CDMA2000 1x MO calling.

Step 602, wireless device are adjusted to CDMA2000 1x network away from the LTE network connected and perform the pilot signal measurement of neighbours 1x community.

Step 603, after a measurement wireless device turn back to LTE network, and the 1x call message by GCSNA protocol encapsulation is passed through LTE air interface transmission to MME.Wireless device should provide the CDMA2000 1x cell information comprising community ID and radio environment measurements.

This message is forwarded to IWS with A21-1x air interface signaling messages by step 604, MME.

Step 605, IWS respond MME to confirm the reception of A21-1x air interface signaling messages with A21-Ack within Tack-21 second.

Step 606, IWS use IWS cell ID information structure demand for services and are sent to MSC.

The service request that step 607, foundation receive, MSC sends allocation request message to IWS.

Step 608, IWS are with being assigned message response MSC.

Step 609, simultaneously, IWS uses the CDMA2000 1x cell information structure switching received to need information and sending to arrive MSC.

Step 610, MSC send handover request message to 1x BS.

Step 611,1x BS respond MSC with switching Ack.

Switching command is issued IWS by step 612, MSC after receiving the switching Ack from 1x BS.

Step 613, IWS CDMA2000 1x cell information construct general switch indicating information (UHDM) and are sent to MME.

This message point journey is delivered to wireless device by step 614, MME.

Step 615, MME send A21-Ack message to IWS to confirm the reception of A21-1x air interface signaling messages.

Step 616, wireless device send GCSNAAck message to MME by LTE tunnel.

It is delivered to IWS with A21-1x air interface signaling messages by step 617, MME.

Step 618, IWS send A21-Ack message to IWS to confirm the reception of A21-1x air interface signaling messages.

Step 619, wireless device are connected with LTE communication to stop LTE and return to CDMA2000 1x network.

Step 620, IWS send switching to start to MSC to trigger handoff procedure.

Step 621, wireless device adjust to CDMA2000 1x wireless frequency to obtain 1x signaling.

Step 622 is once obtain 1x signaling, and wireless device sends and handoffs completion message to 1x BS.This message is forwarded to MSC by 1x BS.

Step 623, MSC send clear command to IWS.

Step 624, IWS first remove the resource being assigned to wireless device, and complete with removing and respond.

Figure 29 illustrates in integrated IWS-1xBS situation for embodiment that the intercommunication MO of eCSFB calls out.

Step 701, there is the wireless device of eCSBF ability to be attached to LTE network and determine to perform CDMA2000 1x MO calling.

Step 702, wireless device are adjusted to CDMA2000 1x network away from the LTE network connected and perform the pilot signal measurement of neighbours 1x community.

Step 703, after a measurement wireless device turn back to LTE network, and the 1x call message by GCSNA protocol encapsulation is passed through LTE air interface transmission to MME.Wireless device should provide the CDMA2000 1x cell information comprising community ID and radio environment measurements.

This message is forwarded to IWS with A21-1x air interface signaling messages by step 704, MME.

Step 705, IWS-1xBS respond MME to confirm the reception of A21-1x air interface signaling messages with A21-Ack within Tack-21 second.

Step 706, IWS-1xBS use IWS cell ID information structure demand for services and are sent to MSC.

The service request that step 707, foundation receive, MSC sends allocation request message to IWS-1xBS.

Step 708, IWS-1xBS are with being assigned message response MSC.

Step 709, the IWS-1xBS CDMA2000 1x cell information received constructs general switch indicating information (UHDM) and is sent to MME.

This message point journey is delivered to wireless device by step 710, MME.

Step 711, MME send A21-Ack message to IWS to confirm the reception of A21-1x air interface signaling messages.

Step 712, wireless device send GCSNAAck message to MME by LTE tunnel.

It is delivered to IWS-1xBS with A21-1x air interface signaling messages by step 713, MME.

Step 714, IWS-1xBS send A21-Ack message to IWS to confirm the reception of A21-1x air interface signaling messages.

Step 715, wireless device are connected with LTE communication to stop LTE and return to CDMA2000 1x network.

Step 716, wireless device adjust to CDMA2000 1x wireless frequency to obtain 1x signaling.

Step 717 is once obtain 1x signaling, and wireless device sends and handoffs completion message to IWS-1x BS.

Figure 30 illustrates the embodiment for the intercommunication MT calling procedure of eCSFB in independently IWS situation.

Step 801, there is the wireless device of eCSBF ability to be attached to LTE network and registered to CDMA2000 1x MSC by IWS.

Step 802, MSC find the position of wireless device by log-on message and use IWS community ID (or LAC) to send paging request to IWS.

Step 803, IWS forward the message to MME on A21-1x air interface signaling messages.

This beep-page message is delivered to wireless device with DL information pass-along message by step 804, MME.

Step 805, MME with A21-Ack message response IWS to confirm the reception of A21-1x air interface signaling messages.

The beep-page message that step 806, foundation are received by LTE tunnel, wireless device is adjusted to CDMA2000 1x network away from the LTE network connected and performs the pilot signal measurement of neighbours 1x community.

Step 807, after a measurement wireless device turn back to LTE network, and the 1x page-response message by GCSNA protocol encapsulation is passed through LTE air interface transmission to MME.Wireless device should provide the CDMA2000 1x cell information comprising community ID and radio environment measurements.

This message is forwarded to IWS with A21-1x air interface signaling messages by step 808, MME.

Step 809, IWS respond MME to confirm the reception of A21-1x air interface signaling messages with A21-Ack within Tack-21 second.

Step 810, IWS use IWS cell ID information structure page response and are sent to MSC.

The page-response message that step 811, foundation receive, MSC sends allocation request message to IWS.

Step 812, IWS are with being assigned message response MSC.

Step 813, simultaneously, IWS uses the CDMA2000 1x cell information structure switching received to need information and sending to arrive MSC.

Step 814, MSC send handover request message to 1x BS.

Step 815,1x BS respond back MSC with switching Ack.

Switching command is issued IWS by step 816, MSC after receiving the switching Ack from 1x BS.

Step 817, IWS CDMA2000 1x cell information construct general switch indicating information (UHDM) and are sent to MME.

This message point journey is delivered to wireless device by step 818, MME.

Step 819, MME send A21-Ack message to IWS to confirm the reception of A21-1x air interface signaling messages.

Step 820, wireless device send GCSNAAck message to MME by LTE tunnel.

It is delivered to IWS with A21-1x air interface signaling messages by step 821, MME.

Step 822, IWS send A21-Ack message to IWS to confirm the reception of A21-1x air interface signaling messages.

Step 823, wireless device are connected with LTE communication to stop LTE and return to CDMA2000 1x network.

Step 824, IWS send switching to start to MSC to trigger handoff procedure.

Step 825, wireless device adjust to CDMA2000 1x wireless frequency to obtain 1x signaling.

Step 826 is once obtain 1x signaling, and wireless device sends and handoffs completion message to 1x BS.This message is forwarded to MSC by 1x BS.

Step 827, MSC send clear command to IWS.

Step 828, IWS first remove the resource being assigned to wireless device, and complete with removing and respond.

Figure 31 illustrates in integrated IWS-1xBS situation for embodiment that the intercommunication MT of eCSFB calls out.

Step 901: have the wireless device of eCSBF ability to be attached to LTE network and registered to CDMA2000 1x MSC by IWS-1xBS.

Step 902:MSC finds the position of wireless device by locating information and uses IWS community ID (or LAC) that paging request is sent to IWS-1xBS.

This message is forwarded to MME by A21-1x air interface signaling messages by step 903:IWS-1xBS.

This beep-page message is delivered to wireless device by step 904:MME in DL information pass-along message.

Step 905:MME uses A21-Ack message to make response with the reception confirming A21-1x air interface signaling messages to IWS-1xBS.

Step 906: when receiving beep-page message by LTE tunnel, wireless device from the LTE network connected be tuned to CDMA2000 1x network perform the pilot signal measurement of contiguous 1x community.

Step 907: wireless device turns back to LTE network after the measurement, and by LTE air interface, the 1x page-response message packaged by GCSNA agreement is sent to MME.Wireless device should provide the CDMA2000 1x cell information comprising community ID and radio environment measurement.

This message is dealt into IWS-1xBS in the transfer of A21-1x air interface signaling messages by step 908:MME.

Step 909:IWS-1xBS uses A21-Ack to make response with the reception confirming A21-1x air interface signaling messages to MME within Tack-21 second.

Step 910:IWS-1xBS uses IWS cell ID information structure page response and is sent to MSC.

Step 911: when receiving page-response message, allocation request message is sent to IWS-1xBS by MSC.

Step 912:IWS-1xBS use is assigned message and makes response to MSC.

Step 913:IWS-1xBS uses the CDMA2000 1x cell information received construct general switch indicating information and be sent to MME.

This message point journey is delivered to wireless device by step 914:MME.

A21-Ack message is sent to IWS-1xBS to confirm the reception of A21-1x air interface signaling messages by step 915:MME.

Step 916: GCSNAAck message is sent to MME by LTE tunnel by wireless device.

It is delivered to IWS-1xBS by step 917:MME in A21-1x air interface signaling messages.

A21-Ack message is sent to IWS to confirm the reception of A21-1x air interface signaling messages by step 918:IWS-1xBS.

Step 919: wireless device and LTE carry out communicating to stop LTE and be connected and return to CDMA2000 1x network.

Step 920: wireless device be tuned to CDMA2000 1x radio frequency to obtain 1x signaling.

Step 921: once 1x signaling is acquired, handoff completion message is just sent to IWS-1xBS by wireless device.

Radio station such as base station or wireless device can comprise processor electronic equipment such as microprocessor, and it realizes the method for one or more technology such as existed in this document.Radio station can comprise the transceiver electronic equipment by one or more communication interface such as antenna transmission and/or reception wireless signal.Radio station can comprise other communication interface for transmitting and receive data.Radio station can comprise the one or more memories being configured to storage information such as data and/or instruction.

Realize in one or more combination in---structure disclosed in presents and structural equivalents thereof can being included in---in Fundamental Digital Circuit or at computer software, firmware or hardware or in them disclosed in describing in this document with other execution mode and feature operation.Disclosed can be implemented as one or more computer program with other execution mode, that is, for being performed by data processing equipment or one or more modules of the computer program instructions of encoding on a computer-readable medium of operation of control data processing unit.Computer-readable medium can be machine readable storage device, machine readable storage carrier, memory devices, realize the combination of the constituent of the object of machine readable transmitting signal or one or more in them.Term " data processing equipment " comprises for the treatment of all devices of data, equipment and machine, comprises programmable processor, computer or multiple processor or computer as an example.Device also can comprise and such as forms the code of processor firmware, protocol stack, data base management system, operating system or the one or more combination in them for discussed computer program creates the code of execution environment except hardware.Transmitting signal is the artificial signal produced, electricity, light or electromagnetic signal that such as machine produces, and it is produced information coding for being transferred to suitable receiver apparatus.

Computer program (also referred to as program, software, software application, script or code) available any type of programming language---comprise compiling or interpretative code---is write, and it can by any form, and---comprising as independently program or as module, parts, subroutine or other unit of being suitable for use in computing environment---is used.Computer program is not necessarily corresponding to the file in file system.Program can be stored in preserves other program or data (such as, be stored in the one or more scripts in marking language document) file a part in, in the Single document that is exclusively used in discussed program or in multiple coordinative file (such as, storing the file of the part of one or more module, subprogram or code).Computer program can be used on a computer or is being arranged in a website or is being distributed in multiple website and performs by multiple computers of interconnection of telecommunication network.

The process described in this document and logic flow can be performed by one or more programmable processor, and these processors perform one or more computer program to be produced output carried out n-back test by operating data.Process and logic flow also can be performed by dedicated logic circuit such as FPGA (field programmable gate array) or ASIC (application-specific integrated circuit (ASIC)), or device also can be implemented as described dedicated logic circuit.

Be suitable for performing any one or more processors that the processor of computer program comprises the digital computer of general and special microprocessor and any type as an example.Usually, processor will receive instruction and data from read-only memory or random access memory or both.The primary element of computer is the processor for performing instruction and the one or more memory devices for storing instruction and data.Usually, computer also comprises one or more mass-memory units such as disk, magneto optical disk or CD for storing data, or be operatively coupled into from these mass-memory units receive data, transfer data to mass-memory unit, or both.But computer is without the need for such equipment.The computer-readable medium being suitable for storing computer program instructions and data comprises the nonvolatile memory of form of ownership, medium and memory device, comprises semiconductor memory devices such as EPROM, EEPROM and flash memory device as an example; Disk such as internal hard drive or removable dish; Magneto optical disk; And CD ROM and DVD-ROM dish.Processor and memory by supplemented or can be incorporated in dedicated logic circuit.

Although presents comprises a lot of details, these details are not interpreted as the restriction to being required the scope of the present invention that maybe can be required, and are more properly interpreted as the description of feature specific to specific execution mode.Some feature described in this document under the background of independent execution mode also can realize in conjunction with single execution mode.On the contrary, the various feature described under the background of single execution mode also can realize dividually in multiple execution mode or in any suitable sub-portfolio.And, although feature is described to above work in some embodiments, and similarly advocated even at first, the one or more features from advocated combination can remove from this combination in some cases, and the combination of advocating can turn to the distortion of sub-portfolio or sub-portfolio.Similarly, although describe operation with specific order in the accompanying drawings, this should not be understood to require such operation with shown particular order or to be performed with continuous print order or all operations illustrated all are performed the result realizing expecting.

Only disclose several example and realization.Described realization and other realization can be changed, change and be strengthened according to disclosed content.

Claims (8)

1., for a system for radio communication, comprising:

For determining the circuit of the preference order between the first wireless technology and the second wireless technology, wherein said first wireless technology is different from described second wireless technology, and described first wireless technology has the priority higher than described second wireless technology;

Based on determined described first wireless technology, there is the priority higher than described second wireless technology, and carry out the circuit that communicates based on described first wireless technology and base station;

Based on the circuit of described second wireless technology and interoperability services transaction message, described interoperability services communicates with the switching center being relevant to described second wireless technology;

Wherein said first wireless technology comprises CDMA 2000 technology, and described second wireless technology comprises Long Term Evolution LTE technology,

The described circuit wherein carrying out communicating based on described first wireless technology and described base station comprises cdma base station controller BSC,

Described circuit wherein based on described second wireless technology and described interoperability services transaction message comprises Mobility Management Entity MME, gateway SGW and grouped data network gateway PDN-GW, and

Described system comprises interoperability services IWS module, and described IWS module communicates with described cdma base station controller, be provided for by or described CDMA 2000 technology or described LTE technology and the wireless device by described system service carry out the interoperability services that communicates,

Wherein said IWS module uses signal adaptation agreement to encapsulate the message of carrying out with the described wireless device by described system service communicating.

2. the system as claimed in claim 1, wherein concluded the business message comprises Short Message Service (SMS) message.

3. the system as claimed in claim 1, wherein concluded the business message comprises beep-page message.

4. the system as claimed in claim 1, also comprises:

Operate described switching center to initiate from the first network based on described first wireless technology to the circuit switched of the second network based on described second wireless technology.

5., for a system for radio communication, comprising:

For determining the circuit of the preference order between the first wireless technology and the second wireless technology, wherein said first wireless technology is different from described second wireless technology, and described first wireless technology has the priority higher than described second wireless technology;

Based on determined described first wireless technology, there is the priority higher than described second wireless technology, and carry out the circuit that communicates based on described first wireless technology and base station; And

Based on the circuit of described second wireless technology and interoperability services transaction message, described interoperability services communicates with the switching center being relevant to described second wireless technology;

Wherein said first wireless technology comprises CDMA 20001x technology, and described second wireless technology comprises CDMA 2000 HRPD (high rate packet data) HRPD technology,

The described circuit wherein carrying out communicating based on described first wireless technology and described base station comprises cdma base station controller BSC,

Described circuit wherein based on described second wireless technology and described interoperability services transaction message comprises high-speed packet data service gateway HSGW, and

Described system comprises interoperability services IWS module, described interoperability services IWS module communicates with described cdma base station controller BSC, with be provided for by or described CDMA 20001x technology or described HRPD technology and the wireless device by described system service carry out the interoperability services that communicates

Wherein said IWS module uses signal adaptation agreement to encapsulate the message of carrying out with the described wireless device by described system service communicating.

6. system as claimed in claim 5, wherein concluded the business message comprises Short Message Service (SMS) message.

7. system as claimed in claim 5, wherein concluded the business message comprises beep-page message.

8. system as claimed in claim 5, also comprises:

Operate described switching center to initiate from the first network based on described first wireless technology to the circuit switched of the second network based on described second wireless technology.