CN102364976A - 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

Mutual circuit service rollback

Background

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

Wireless communication system can comprise the network with one or more base stations of one or more wireless device communications, one or more wireless devices for example mobile device, cell phone, wireless network card, travelling carriage (MS), subscriber equipment (UE), access terminal (AT) or subscriber station (SS).The radio signal such as voice data and other data contents is carried to the wireless device emission in each base station.The base station can be called as access point (AP) or access network (AN), or a part that can be used as access network or base station sub-system (BSS) is comprised.In addition, wireless communication system can comprise the core network with one or more base station communications.The base station can be gone up to one or more wireless device transmission radio signals at forward link (FL), and forward link (FL) also is called as down link (DL).Wireless device can be gone up to one or more base station transmits radio signals at reverse link (RL), and reverse link (RL) also is called as up link (UL).

Wireless device can use one or more different wireless technologys that is used to communicate by letter.The various instances of wireless technology comprise code division multiple access (CDMA), High Rate Packet Data (HRPD), the HRPD (eHRPD) of evolution, UMTS (UMTS), the Universal Terrestrial Radio Access Network (UTRAN) such as CDMA2000 1x), UTRAN (E-UTRAN), Long Term Evolution (LTE) and the micro-wave access global inter communication (WiMAX) of evolution.

General introduction

Presents has especially been described the technology that is used for mutual circuit service rollback (interworking circuit service fallback) except other guide.

In one aspect, the technology, device and the system that are used for mutual circuit service rollback can comprise based on first wireless technology and first network service; Communicate by letter with switching center corresponding to second network based on second wireless technology, wherein switching center is configured to handle the message that is used for the one or more equipment on second network; And according to second wireless technology, in transaction message between wireless device that communicates on first network and switching center just.Transaction message can be included on first network and wireless device communication.

In yet another aspect, the technology, device and the system that are used for wireless communication system can comprise according to first wireless technology and base station communication; And according to second wireless technology, with the interoperability services transaction message that is just communicating with the switching center that is associated with second wireless technology.The message of being concluded the business can comprise Short Message Service (SMS) message.The message of being concluded the business can comprise paging information.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 based on first wireless technology and first network service; Based on the circuit that second wireless technology different with first wireless technology communicated by letter with switching center corresponding to second network, wherein switching center is configured to handle the message that is used for the one or more equipment on second network; And based on second wireless technology at the circuit that just between the wireless device of first network communication and switching center, transmits transaction message, wherein transaction message is included on first network and wireless device communication.

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

The details of one or more embodiments proposes in the description of the content of enclosing, accompanying drawing and the hereinafter followed.From description and accompanying drawing and accessory rights requirement, other characteristic will be tangible.

The accompanying drawing summary

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 and is used for the embodiment that the 1x circuit switches the multiple virtual link interoperability services structure of rollback.

Fig. 4 shows and is used for another embodiment that the 1x circuit switches the multiple virtual link interoperability services structure of rollback.

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

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

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

Fig. 8 shows the embodiment that is used to have with the interworking protocol stack of the interworking architecture of the integrated interoperability services of Mobility Management Entity.

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

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

Figure 11 shows the embodiment that the 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 the 1x circuit switches rollback message.

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

Figure 16 shows the 1x circuit that is used for the mobile device end call and switches the rollback calling.

Figure 17 shows another embodiment that the 1x circuit that is used for the mobile device end call switches the rollback call-flow.

Figure 18 shows another embodiment that the 1x circuit that is used for the mobile device end call switches the rollback call-flow.

Figure 19 shows the 1x circuit and switches another embodiment that the rollback mobile device makes a call and flows.

Figure 20 shows the 1x circuit and switches another embodiment that the rollback mobile device makes a call and flows.

Figure 21 shows the 1x circuit and switches the embodiment that the rollback mobile device makes a call and flows.

Figure 22 shows the embodiment of communication process.

Figure 23 shows the embodiment that is used for CSFB and the interworking architecture that strengthens CSFB (eCSFB).

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

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

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

Figure 27 shows the embodiment of the intercommunication registration that is used for eCSFB.

Figure 28 shows the intercommunication MO that under the situation of independent interoperability services (IWS), is used for eCSFB and calls out the embodiment of formula.

Figure 29 shows the embodiment of the intercommunication MO calling that under the situation of integrated IWS-1xBS, is used for eCSFB.

Figure 30 shows the intercommunication MT that under the situation of independent IWS, is used for eCSFB and calls out the embodiment of formula.

Figure 31 shows the embodiment of the intercommunication MT calling that under the situation of integrated IWS-1xBS, is used for eCSFB.

Because traditional voice service is to the data center services development, the second generation (2G), the third generation (3G) and the 4th generation (4G) cordless communication network, CDMA2000 for example is to based on OFDM and technological Long Term Evolution of future generation (LTE) evolution of MIMO.LTE can provide bigger network capacity and peak data rate, and has the less stand-by period for data, services.This is crucial for the experience that the user serves data.Yet because the high efficiency of CDMA technology in voice service, CDMA2000 1x network still can be used to provide voice service, even after LTE network quilt is disposed widely and after several years, is used, also is like this.Therefore, CDMA2000 1x circuit switching and packet switching network and LTE network are with long-term co-existence.Wireless communication system can provide one or more intercommunications mechanism, and with the intercommunication of the coexistence that is used in multi-technology networks, the for example intercommunication of CDMA2000 1x and LTE becomes smooth.

Between CDMA2000 1x and LTE, can implement intercommunication mechanism, for example single wireless phone voice call continuity (SRVCC) intercommunication mechanism and 1x circuit switch rollback (CSFB) mechanism.But SRVCC intercommunication mechanism will shift out the LTE coverage at travelling carriage still in CDMA2000 1x network coverage the time, with the voice call (VOIP) of addressing from the LTE network, and switch to CDMA2000 1x network.This approach supposition IMS is disposed in operator's core network widely, and VOIP will be used to the voice service that provides main.

In 1x CSFB; When travelling carriage is connected to the LTE network when being used for data, services; Mobile switching centre in the CDMA2000 network (MSC) can mobile paging station carrying out voice service (for example mobile device stop (MT) call out), or the user possibly want to use Mobile Origination voice call (for example mobile device initiate (MO) call out).For example CDMA2000 is shared with LTE because single radio is by multiple technology, thus travelling carriage must travelling carriage must rollback to CDMA2000 1x network with after carrying out voice service, with its radio from the LTE frequency adjustment to CDMA2000 1x frequency.During 1x CSFB, the data, services on the LTE network can be ended.

Presents has been described technology, device and the system that is used for the intercommunication between different wireless technologies, and except other, especially discloses details and the embodiment that relates to mutual circuit service rollback (CSFB).CSFB mechanism can be erected bridge between two kinds or more kinds of different wireless technologies, to allow the communication between two kinds or the more kinds of technology.For example, the wireless device with the operation of first wireless technology can be through for example producing message and pass through RTTY transmitting messages, rollback to the second wireless technology according to first wireless technology based on second wireless technology.In another embodiment; Wireless device is connected to the LTE network and intention receives paging or SMS from CDMA2000 1x MSC; Or SMS is sent to CDMA2000 1x network; Wireless device can use technology described herein, and the message that is based on the LTE network is communicated by letter with CDMA2000 1x.In certain embodiments, with the wireless device of first wireless technology operation can through with the protocol encapsulation of second wireless technology with transmission payload that first wireless technology is associated in, rollback to the second wireless technology.

The various instances of the technology that can embodiment of the present invention and the wireless communication system of system are except especially comprising the wireless communication system based on following technology other: such as UTRAN (E-UTRAN), Long Term Evolution (LTE) and the micro-wave access global inter communication (WiMAX) of the HRPD (eHRPD) of the code division multiple access (CDMA) of CDMA2000 1x, High Rate Packet Data (HRPD), evolution, UMTS (UMTS), Universal Terrestrial Radio Access Network (UTRAN), evolution.For example, wireless communication system can comprise one or more network and one or more networks based on LTE based on CDMA.

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

Wireless communication system can provide based on the intercommunication of using universal multiple virtual link interoperability services (GMVL-IWS) structure.The 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.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 based on the system 200 of GMVL-IWS structure.

Multi-mode wireless device 210 can be provided to the wireless connections of different wireless technologies network.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 wireless device 210 the voice-and-data service to be provided through dedicated radio link.ENodeB 230 is the wireless base stations in the LTE network, connects so that radio (for example LTE-Uu) to be provided to wireless device 210.In certain embodiments, the circuit that is used for CDMA2000 base station 220 is integrated with the circuit that is used for eNodeB 230.In certain embodiments, radio control unit can be implemented multi radio access technology, for example 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 used for the base station controller CDMA2000 base station 220 controlled through Abis interface.MME 243 is the network entities that are used for through S1-MME interface control eNodeB 230.IWS 242 is configured to support the different wireless technologies intercommunication.IWS 242 is connected in BSC/PCF 241 through the A21 interface.IWS 242 is connected in MME 243 through the S102 interface.IWS 242 can transmit CDMA2000 1x message through A1 interface tunnel between wireless device 210 and MSC 280.

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

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

The different embodiment of multiple virtual link interoperability services structural support interoperability services is selected with disposing.

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

Fig. 4 shows another embodiment of the multiple virtual link interoperability services structure that is used for 1x CSFB.In the present embodiment, IWS 242 is integrated among the MME 243, and interface S102 is the internal interface between IWS 242 and MME 243.This structure can be supported the wireless technology rollback, and for example LTE is to the rollback of 1x.

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

In certain embodiments, BSC, IWS and MME jointly are integrated in the single network node.Therefore, relevant interface, for example 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 tunnel transfer mechanism between 1x MSC and the wireless device.

Fig. 6 shows the embodiment of the interworking protocol stack of the multiple virtual link interworking architecture that is used for BSCization.Fig. 7 shows the embodiment of the interworking protocol stack that is used for independent multiple virtual link interworking architecture.Fig. 8 shows the embodiment that is used to have with the interworking protocol stack of the interworking architecture of the integrated IWS of MME.

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

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

Fig. 9 shows the embodiment that is used for from the 1x signal adaptation agreement wireless device status transition diagram of the CSFB of LTE.When initiating, 1x SAP mechanism gets into the 1x state.In the 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 contiguous technical information that is configured in the web search priority in the RUIM/SIM card or in CDMA2000 1x Overhead Message, broadcasts, wireless device can attached network.If the LTE network has the priority higher than CDMA2000 network, wireless device will begin to search for the LTE network so.Otherwise, multi-mode wireless device can attach to the 1x network.

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

If wireless device does not find the LTE signal, equipment can be back to and attach to the 1x network so.Equipment can periodically be regulated away from 1x with scanning LTE signal, and this depends on the configuration of network selecting.

Figure 10 shows the embodiment that is used for from the 1x signal adaptation agreement wireless device status transition diagram of the CSFB of HRPD.When initialization, 1x SAP mechanism gets into the 1x state.If wireless device is configured with the HRPD network with higher-priority; Wireless device can switch to HRPD with its radio so; And general 1x SAP can get into when its decision search HRPD network state is set, and connection request (ConnectionRequest) message is sent out.If the connection to HRPD is opened, so general 1x SAP will get into the tunnel delivery status, and wireless device can pass through HRPD network delivery 1x message.Otherwise general 1x SAP will be back to the 1x state.General 1x SAP will remain in the tunnel delivery status, connect up to HRPD to be closed, and be back to the 1x state then.

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

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

Figure 11 shows the embodiment of 1x SAP1x Transfer Message.The 1xSAP1x Transfer Message can be used to encapsulate CDMA2000 1x message.In the 1x Transfer Message, message id is used to discern the 1x Transfer Message.Disclosed like this paper, 1x SAP can support to survey and confirm based on the message that is replicated the transmission again of (ACK).The message that MessageSequence and ACKRequired field are used to be replicated is surveyed and transmission again.The message that is replicated is if desired surveyed and transmission again, and transmit leg ACKRequired field is set to the MessageSequence field that " 1 " and MessageSequence field be set to than require last message of the affirmation of being sent by transmit leg and Duos one so.1x logical channel territory is used for indicating packed 1x message to be carried through the logical channel at local CDMA 2000 1x networks.This field of wireless device as transmit leg is set to " 0 ", if packed 1x signaling is through virtual r-csch transmission; Or be set to " 1 ", if through virtual r-dsch transmission.IWS as transmit leg can this field be set to " 0 ", if packed signaling is through virtual f-csch transmission; Or be set to " 1 ", if through virtual f-dsch transmission.1xSignalingLength and 1xSignaling field define the container that carries the 1x signaling.The 1xSignaling field comprises CDMA2000 1x signaling packets data cell (PDU), and the length of CDMA2000 1x signaling packets data cell (PDU) is provided with by the 1xSignalingLength field.

There is the multiple selection of using 1x SAP carrying CDMA2000 1x message, as described herein.Select one to be to specify general 1x SAP can only carry one group to be used for the 1x message that 1x registration, SMS, MO and MT call out.Select two to be not limit any 1x message of being carried by general 1x SAP.Select one if use, 1x SAP is asked to for carrying out special filtering function through each message of logical channel transmission so.If message is not sealed in the tabulation 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 that 1x shifts acknowledge message, 1x shifts refuse information and 1x CSFB message.

Figure 12 shows the embodiment that 1x shifts acknowledge message.If the message that requires to be replicated is surveyed and transmission again, the recipient can send 1x to transmit leg and shift acknowledge message so.

Figure 13 shows the instance of 1x transmission refuse information.If 1x SAP does not support to transmit 1x message, then receiver can send 1x transmission refuse information to transmitter.

Figure 14 shows the instance of 1x CSFB message.Switch when 1x CSFB message is exchanged with indication wireless device last signaling in the tunnel by the IWS use and get back to CDMA2000 1x network.

Wireless communication system can be provided for the mechanism of 1x CSFB registration.In some are realized, require wireless device at CDNA2000 1x network registry, when wireless device was connected to the LTE network, 1xMSC can seek this wireless device like this.When wireless device through IWS when MSC registers, MSC can be with IWS as treating with the similar network node of BSC.When wireless device was received circuit-switched data call, MSC can send paging request to the IWS of wireless device through its registration.

When wireless device detects registration area change or the change of frequency band kind of information, will trigger the 1x registration process.Registration area information and frequency band kind of information can be through the SIB-8 information broadcasts of eNodeB or through the CDMA2000 1x system parameters clean culture of eNodeB from IWS.When wireless device is connected to the LTE network, and move on to a different IWS, will require this wireless device to register once more from send previous of 1x registration through it.Turn back to the LTE network if retreat into the wireless device of the 1x network that is used for the 1x circuit switching equipment, then will require this wireless device to register to 1x MSC once more.In order to trigger 1x registration, can be configured in different registration areas or different frequency band kinds with CDMA 2000 system parameterss from the local CDMA 2000 1x networks of IWS through the eNodeB clean culture.

Figure 15 shows the instance of 1x CDFB registration call flow process.1501, wireless device is connected to the LTE network that is in active state.1502, wireless device detects registration area or the frequency band kind changes.1503, wireless device sends packaged 1x through eNodeB and MME via the LTE tunnel and is registered to IWS.1504, IWS sends position updating request to MSC/VLR.1505, the MSC/VLR response position upgrades and responds IWS.1506, IWS can be wireless device and keeps this positional information and accept to instruct wireless device via the transmission registration of LTE tunnel.1507, in case 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.1508, MSC sends an acknowledgement to event notice.

Show the instance of the 1x CSFB call flow that is used for mobile terminal calling like 16C.Wireless device has been accomplished the registration to CDMA2000 1x network, and 1601, wireless device is connected to the LTE network.1602, MME is with SIB-8 broadcasting 1x system parameters.Wireless device receives and stores this parameter.1603, based on track record, 1x MSC has known that wireless device is connected to the LTE network and sends paging request message to IWS.1604, IWS sends 1x circuit switching paging to wireless device through MME and eNodeB via the LTE tunnel.Be in the idle situation of LTE for wireless device, IWS can send 1x circuit switching paging through 1x BTS.1605, wireless device sends the expansion service request message and gets back to CDMA2000 1x network to MME with the indication switching.MME can send 1x CSFB and notify IWS.1606, IWS can send 1x CSFB parameter through eNOdeB and obtain CDMA2000 1x signal to wireless device to help wireless device.1607, MME release and reboot wireless device are to CDMA2000 1x network.1608, wireless device can use the 1x system information of being stored to regulate its radio to the 1x frequency.1609, wireless device sends the 1x page response to IWS via 1x BTS.1610, wireless device and 1x BTS carry out 1x mobile terminal calling creation facilities program (CFP).1611,1x MSC sends event notice through IWS and just is being connected to the 1x network with notice MME wireless device.1612, MME sends based on event notice and replys.

Figure 17 shows another instance of the 1x CSFB call flow that is used for mobile terminal calling.This instance uses lightweight BSC IWS (BSC-Lite IWS).In this example, through optimizing 1x CSFB call flow with the call set-up time that reduces portable terminal via the traffic channel assignment message of LTE network tunnel transmission page response and expansion.1701, wireless device is accomplished the registration of phase 1x network and is connected to the LTE network.1702, MME is with SIB-8 broadcasting 1x system parameters.Wireless device receives and storage 1x system parameters.1703,1x MSC sends page response to IWS.

1704, IWS sends 1x circuit switching paging to wireless device through MME and eNodeB via the LTE tunnel.Be in the idle situation of LTE for wireless device, IWS can send 1x circuit switching paging through 1x BTS.1705, IWS can send the pilot measurement request to wireless device via the tunnel.1706, wireless device is measured 1x BTS pilot signal in measurement clearance.1707, wireless device reports that via the LTE tunnel measurement result is to IWS in Power Measurement Report Message (PMRM).1708, wireless device sends the 1x page-response message to IWS and MSC via the LTE tunnel.

1709, MSC sends request for allocation and gives IWS.1710, IWS sends the channel assignment message (ECAM) of expansion to 1x BTS.Based on ECAM, 1x BTS radio resource allocated is to set up Traffic Channel to reduce call set-up time in the BTS side.1711, IWS sends ECAM via the tunnel and sets up Traffic Channel to wireless device with request.In some were realized, IWS sent the 1xCSFB order and switches to trigger 1xSAP.In some were realized, wireless device triggered this switching automatically through himself.Based on receiving ECAM, 1712, the service request information that wireless device sends expansion switches to CDMA2000 1x network to MME with indication.1713, MME discharges and should connect and send connection release message to wireless device.

1714, wireless device switches to the 1x Traffic Channel of being distributed by 1x BTS.1715,1x MSC just is being connected to the 1x network via IWS notice MME wireless device.1716, MME replys this via the S102 interface and notifies MSC.

Figure 18 shows another instance of the 1x CSFB call flow that is used for mobile terminal calling.This instance uses independent IWS.1801, wireless device is accomplished to the registration of 1x network and is connected to the LTE network.1802, MME is with SIB-8 broadcasting 1x system parameters.Wireless device receives and stores this 1x system parameters.1803,1x MSC sends paging request to IWS.

1804, IWS sends 1x circuit switching paging to wireless device through MME and eNodeB via the LTE tunnel.Be in the idle situation of LTE for wireless device, IWS can send 1x circuit switching paging through 1x BTS.1805, IWS can send the pilot measurement request to wireless device via the tunnel.1806, wireless device is measured 1x BTS pilot signal in measurement clearance.1807, wireless device reports that via the LTE tunnel measurement result is to IWS in PMRM.At 1808a, wireless device sends the 1x page-response message to IWS and MSC via the LTE tunnel.

At 1808b, IWS can send page-response message and give 1xBTS/BSC.In some instances, at 1808b, IWS sends the message that comprises PMRM information.At 1809a, MSC sends request for allocation to IWS.At 1809b, IWS can pass on request for allocation to 1xBTS.At 1809c, 1xBTS/BSC can send A7-paging service Channel Transmission message to IWS.In some were realized, BSC structure ECAM and A7-paging service Channel Transmission message were sent ECAM to IWS.1810, BSC sends ECAM and reduces call set-up time to 1x BTS with the radio resource that branch is used in the Traffic Channel of BTS side.1811, IWS sends ECAM via the tunnel and sets up Traffic Channel to wireless device with request.In some were realized, IWS sent the 1xCSFB order and switches to trigger 1xSAP.In some were realized, wireless device triggered this switching automatically through himself.Based on receiving ECAM, 1812, the service request information that wireless device sends expansion switches to CDMA2000 1x network to MME with indication.1813, MME discharges and should connect and send connection release message to wireless device.

1814, wireless device switches to the 1x Traffic Channel of being distributed by 1x BTS.1815,1x MSC just is being connected to the 1x network via IWS notice MME wireless device.1816, MME replys this via the S102 interface and notifies MSC

Figure 19 shows the call flow that 1xCSFB moves initiation.This instance is realized relevant with BSC-Lite IWS.1901, wireless device is accomplished to the registration of 1x network and is connected to the LTE network.1902, MME is with SIB-8 broadcasting 1x system parameters.Wireless device receives and stores them.1903, the wireless device decision is set up 1xCSFB to be used for initiation.1904, wireless device sends the expansion service request message and gets back to cdma2000 1x network to MME with the indication switching.MME can send the notification to IWS.1905, IWS can send the 1xCSFB parameter via eNodeB through the tunnel and obtain the 1x signal to wireless device to help wireless device.1906, MME release and reboot wireless device are to CDMA2000 1x network.1907, wireless device uses the 1x system information of being stored to regulate its radio to the 1x frequency.1908, wireless device and 1x BTS carry out mobile calling order of initiating to set up Traffic Channel.1909,1x MSC just is being connected to CDMA2000 1x network through IWS notice MME wireless device.1910, MME replys this notice.

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

2005, if it is in idle condition, wireless device can send services request.2006, wireless device sends 1x initial request messages (ORM) to IWS and MSC via the tunnel.2007, wireless device reports that via the tunnel measurement result is to IWS in PMRM.2008, MSC sends request for allocation and gives IWS.2009, IWS sends ECAM message and sets up Traffic Channel to optimize call set-up time with radio resource allocated and in the BTS side for 1xBTS.2010, IWS sends ECAM via the tunnel and sets up Traffic Channel to wireless device with request.In some were realized, IWS sent the 1xCSFB order and switches to trigger 1xSAP.In some were realized, wireless device was confirmed automatically and should be switched through himself.2011, based on receiving ECAM message, the service request information that wireless device sends expansion switches to CDMA2000 1x network to MME with indication.2012, MME sends connection release message and should connect to discharge.

2013, wireless device switches to the 1x Traffic Channel.2014,1x MSC just is being connected to CDMA2000 1x network via IWS notice MME wireless device.2015, MME replys this notice.

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

2105, if it is in idle condition, wireless device can send services request.2106, wireless device sends 1x initial request messages (ORM) to IWS and MSC via the tunnel.2107, wireless device reports that via the tunnel measurement result is to IWS in PMRM.At 2108a, MSC sends request for allocation and gives IWS.At 2108b, IWS can pass on this request for allocation to 1xBSC.

2109, based on this request for allocation, 1xBSC constructs ECAM and sends ECAM to IWS via the A7 interface.1xBSC/BTS can set up Traffic Channel in the BTS side.2110, based on receiving this ECAM, IWS passes on ECAM via the tunnel and sets up Traffic Channel to wireless device with request.In some were realized, IWS sent the 1xCSFB order and switches to trigger 1xSAP.In some were realized, wireless device was confirmed automatically and should be switched through himself.

2111, based on receiving ECAM message, the service request information that wireless device sends expansion switches to CDMA2000 1x network to MME with indication.2112, MME sends connection release message and should connect to discharge.

2113, wireless device switches to the 1x Traffic Channel.2114,1x MSC just is being connected to CDMA2000 1x network via IWS notice MME wireless device.2115, MME replys this notice.

Figure 22 shows an instance of communication process.Communication process can comprise based on first wireless technology and first network service (2205).Communication process can comprise based on second wireless technology that is different from first wireless technology with communicate (2210) corresponding to the switching center of second network.Communication process can comprise that said wireless device is at first network communication based on second wireless technology Transaction Information (2215) between wireless device and switching center.

As stated, new cordless communication network, for example, in the 4th generation,, (4G) communication network was based on OFDM and MIMO technology and emphasical data, services.Because the spectral efficient of CDMA technology in voice service, even 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 are network coexisted will have one long period.

For cooperatively interacting stably of the coexistence that is provided for multi-technology networks, 1x circuit switched fallback (CSFB) can be used in the network of the operator of the IMS that also is not used for the VOIP service.CSFB can provide the method that keeps voice and data network to separate.When wireless device is connected to the LTE network when being used for data, services, CDMA2000 1x network (MSC) can be sought the mobile radio station that is used for voice service (MT calling), or wireless device be used for possibly wanting to initiate audio call (MO calling).Because the radio of being shared by a plurality of technology such as CDMA2000 and LTE, wireless device return to CDMA2000 1x network with the execution voice service after, wireless device must be with its radio from the LTE frequency adjustment to CDMA2000 1x frequency.During 1xCSFB, can end data, services via the LTE network.

Technology, device and the system that cooperatively interacts between the different wireless technologies that the CSFB (eCSFB) be used to make and make circuit service rollback (CSFB) and enhancing cooperatively interacts described with the lower part.CSFB or eCSFB mechanism can make two or more different wireless technologies connect with permission and between two or more technology, communicate.

Figure 23 shows the exemplary interworking architecture that is used for CSFB and eCSFB.This instance comprises a plurality of modules.Multi-mode mobile station/access terminal/UE2310 is a wireless device that is connected to the different wireless technologies network.Comprising the wireless CDMA2000 of CDMA2000 1x base station 2320 uses CDMA2000 1x technology via the aerial connection to wireless device 2310 the voice-and-data service to be provided.ENodeB 2330 is that the wireless base station in the 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 instance 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 used for through Abis interface control CDMA2000 base station 2320.MME2343 is the network entity that is used for via S1-MME interface control eNodeB2330.Interoperability services (IWS) the 2342nd, the network functional entity of support different wireless technologies intercommunication.IWS 2342 is connected to BSC/PCF2341 and is connected to MME2343 via the S102 interface via the A21 interface.IWS can encapsulate and between wireless device and mobile switching centre 2380, exchange CDMA2000 1x message via the A1 interface.

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

The interoperability services framework provides the general 1xCSFB framework between different wireless technologies.When wireless device is connected to the LTE net, it can be communicated by letter with CDMA2000 1x MSC via the IWS in the intercommunication CSFB framework.IWS will get in touch LTE and CDMA2000 1x network, encapsulation and exchange CDMA2000 1x message between wireless device 2310 and MSC 2380.

Sub-district ID is used for through core network identification radio-cell.The position that the MSC2380 that leaves over follows the tracks of wireless device via location area code (LAC), its unit through wireless device registration (sub-district ID) obtains.When wireless device 23 10 receives and sends registration message via CDMA2000 1x OTA chain, CDMA2000 BTS 2320 is forwarded to BSC2341 with it.BSC2341 finds out the sub-district id information relevant with linking of Abis, and uses it to set up location update message via the A1 interface that is used for MSC.Based on the location update message that is received, MSC upgrades wireless device positional information in VLR and/or HLR.

In CDMA2000 1x and LTE intercommunication scene, sub-district ID is used for IWS and sets up the A1 message that is used for MSC.Sub-district ID in the intercommunication scene can be used for carrying out various functions.For example, a function is to handle and the relevant message of non-rollback corelation behaviour, and said non-rollback corelation behaviour is such as handling 1x registration message or SMS.IWS need use the sub-district ID relevant with IWS to set up the A1 message such as location update message, and MSC will know that wireless device just is being connected to the LTE network and is using the LAC relevant with IWS through IWS it to be carried out paging like this.Because this function and the BSC functional similarity of leaving over, IWS can obtain this sub-district id information through appropriate configurations.

Another exemplary functions of sub-district ID in intercommunication CSFB is to handle the relevant behavior of rollback, such as handling the 1x page response or switching desired message.IWS need use and construct A1 message as the relevant sub-district ID in the 1x unit of object element, when wireless device return back to CDMA2000 1x network, for MSC, can set up Traffic Channel in the CDMA2000 1x unit that is fit to like this.In this situation, need provide the sub-district id information relevant to IWS with CDMA2000 1x unit.

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

A) current A21-1x air interface signaling message has only a Cell id field.If it is used to be associated with IWS Cell ID, then have no other fields to comprise the Cell ID that CDMA2000 1x is relevant.Vice versa.

B) if wireless device moves to another place from a place in the LTE network, then it needs MME to be used for each tunnel 1x information to follow the tracks of 1x sub-district message.In other words, LTE not only is provided for the tunnel of CDMA2000 1x message, also need follow the tracks of the CDMA2000 1x sub-district that wireless device can return back to.This will make MME implement to compare the complicacy of being imagined, and increase the complexity that intercommunication is disposed.

C) wireless device need be monitored the radio condition of CDMA2000 1x network and report to MME continually.If can not do like this, will be difficult to know accurately related and the reference cell id field will be inserted A21-1x message with which CDMA2000 1x sub-district for MME.Yet in the eCSFB of TS23.272 call flow, the 1x cell measurement reporting is optional.If wireless device can not provide it to want the accurate 1x cell information that return back to, then MSC possibly set up communication channel in a plurality of contiguous CDMA2000 1x sub-district of the eNodeB that wireless device is connected to.This will cause the unnecessary waste of radio resources and the high failure rate of call setup.

D) IWS can be connected to traditional M SC.From the angle of MSC, not distinct between from the A1 interface of BSC and A1 interface from IWS.Therefore, traditional M SC180 possibly can't distinguish the A1 message from BSC or IWS; And do not know whether wireless device is connected to LTE or CDMA2000 1x network.

Relate to the above-mentioned of Cell ID and other problems for solving among intercommunication CSFB and the eCSFB, provide below be used to register, mobile device makes a call and the enforcement of some mechanism of mobile device end call program.

In an enforcement of CSFB intercommunication registration, for example, 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 through the LTE tunnel when wireless device receives registration message; The IWS that is connected to traditional MSC should use CDMA2000 1x Cell ID and IWS Cell id information to transmit a plurality of location update messages, makes traditional MSC can keep the position of wireless device to be mapped to the record of LTE network and CDMA2000 1x sub-district through IWS.

Call out for CSFB MT; When traditional MSC paging was connected to the wireless device of LTE network, traditional MSC used a plurality of paging algorithms with the BSC in the paging zone that a plurality of paging request message is sent to the IWS relevant with IWS Cell ID (LAC) and be correlated with CDMA2000 1x Cell ID.Behind LTE tunnel paging receiving request message, wireless device should return back to CDMA2000 1x network and arrive 1x MSC with the transmission page-response message.MSC should send request for allocation to BSC, and it is from wireless device paging receiving response message.Then, BSC should send ECAM message, and the communication channel that is used on the CDMA2000 of paging receiving response message 1x sub-district is set up.

For eCSFB intercommunication registration, the wireless device with eCSFB ability sends CDMA2000 1x log-on message, comprises the only Cell ID of related IWS.When through the LTE tunnel when the wireless device with eCSBF ability receives registration message; The IWS that is 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 through IWS with the position that keeps wireless device.

Call out for intercommunication eCSFB MO, send CDMA2000 1x initiation message through the LTE tunnel before, the wireless device with eCSFB ability needs at first tune-away CDMA2000 1x network, and the pilot signal strength of measure neighbor CDMA2000 1x sub-district.Wireless device turns back to the LTE network and has the CDMA2000 1x initiation message of CDMA2000 1x cell information through the LTE tunnel transmission then, comprises CDMA2000 1x Cell ID and radio environment measurements.When the IWS reception had the initiation message of CDMA2000 1x cell information, it can use IWS Cell ID to send service request information to 1x MSC, makes MSC will only respond IWS.When IWS received allocation request message, it can send ECAM to wireless device without the LTE tunnel.On the contrary, the IWS establishment has assigned message and has got back to 1x MSC.Simultaneously, IWS will use CDMA2000 1x cell information to be used for MSC as Target cell with structure CDMA2000 1x handoff request message.Based on received CDMA2000 1x cell information, MSC send handoff request message to CDMA2000 1x BS to set up communication channel.Meanwhile, MSC sends switching command to IWS.IWS sets up UHDM message with CDMA2000 1x cell information then and is used for wireless device and it is sent through the LTE tunnel.In case receive UHDM, the wireless device with eCSFB ability will discharge the LTE connection and return back to CDMA2000 1x network.Wireless device and CDMA2000 1x network will be followed accurate CDMA2000 1x call flow program and set up communication port.

Call out for intercommunication eCSFB MT, MSC can paging be connected to the LTE network and the wireless device to CDMA2000 1x network registry through the LTE tunnel.After receiving beep-page message, the wireless device with eCSFB ability needs the pilot signal strength of tune-away CDMA2000 1x network and measure neighbor CDMA2000 1x sub-district.Wireless device turns back to the LTE network and has the CDMA2000 1x page-response message of CDMA2000 1x cell information through the LTE tunnel transmission then, comprises CDMA2000 1x Cell ID and radio environment measurements.When IWS received the page-response message with CDMA2000 1x cell information, it used IWS Cell ID to give 1x MSC with forwards, makes MSC only respond IWS.When IWS when MSC receives allocation request message, it can send ECAM to wireless device without the LTE tunnel.On the contrary, the IWS establishment has assigned message and has got back to 1x MSC.Simultaneously, IWS will use CDMA2000 1x cell information to be used for MSC as Target cell with structure CDMA2000 1x handoff request message.Based on received CDMA2000 1x cell information, MSC send handoff request message to CDMA2000 1x BS to set up communication channel.Simultaneously, MSC sends switching command to IWS, return back to CDMA2000 1x network to trigger wireless device.In case receive switching command, IWS sets up UHDM message then and is used for wireless device, and it is sent through the LTE tunnel.When receiving UHDM, the wireless device with eCSFB ability will discharge the LTE connection and return back to CDMA2000 1x network.Wireless device and CDMA2000 1x network will be followed accurate CDMA2000 1x call flow program to set up communication port.

For the further simplification that is provided for wireless device and effective and efficient manner to comprise CDMA2000 1x cell information, the newer field of CDMA2000 1x cell information is added in the existing GCSNA interworking protocol.By this way, wireless device can comprise the CDMA2000 1x cell information that directly has CDMA2000 message such as registration, initiation or page-response message.Be different from existing standard, CDMA2000 1x cell information can be followed CDMA2000 1x message directly to arrive IWS through the LTE tunnel and not handle through MME.This will make intercommunication CSFB more decouple and be independent, and make the MME design simplification.

Figure 24 illustrates the instance of the enhancement mode GCSNA agreement of the newer field that comprises the CDMA2000 cell information.

The CellIDIncl field is used for indicating CellID whether to be included in GCSNA.If cell id field is included in this message, wireless device should this field be set to ' 1 '.Otherwise wireless device should this field be set to ' 0 '.It is ' 0 ' that IWS should be provided with this field all the time.

The NumCellIDs field is used for indicating CellID to be included in the quantity of GCSNA.If the CellIDIncl field is set to ' 1 ', then wireless device should comprise and be provided with the quantity that this field is Cell ID.Otherwise transmitter should be ignored this field.

Cell id field identification CDMA2000 1x sub-district.It can be expressed as Pilot PN or Pilot PN phase.If NumCellIDs is not 0, then wireless device should be provided with the CDMA2000 1x sub-district ID that this field receives or measures for the SIB 8 from the eNodeB that connects.Otherwise mobile radio station should be ignored this field.

The RadioMeasurementIncluded field is used for indicating radio measurements whether to be included in GCSNA.If NumCellIDs is not 0, and if CDMA2000 1x pilot frequency intensity measuring comprised that then this field should be set is 1 to wireless device.Otherwise, if CDMA2000 1x pilot frequency intensity measuring is not comprised that then this field should be set is 0 to wireless device.

The PilotStrength field is used for Radio Measurement.If the 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 be ignored this field.

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

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

Figure 25 illustrates the instance of the intercommunication accreditation process that is used for 1x CSFB.

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

Step 302. wireless device will have the CDMA2000 1x registration message that is encapsulated in the 1x CellID information in the LTE UL information transfer message and be transferred to MME.

In a single day step 303. receives the registration message of encapsulation, and MME just passes to IWS with it according to A21-1x interface signaling message.

Step 304.IWS responds A21-Ack to confirm to receive A21-1x air interface signaling message at Tack-21 in second.

Step 305.IWS receives GCSNA message to be packaged in the GCSNAAck response MME in the A21-1x air interface signaling message with indication.

Step 306.MME is forwarded to wireless device through eNodeB with GCSNAAck.

Step 307. while, MME confirms that through A21-Ack message and IWS A21-1x air interface signaling message is received.

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

Step 309.MSC upgrades with the position and accepts message response IWS.

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

Step 311.MSC upgrades with the position and accepts message response IWS.

Step 312. is after receiving affirmation from MSC, and IWS sets up CDMA2000 1x registration and accepts message and send to MME through A21-1x air interface signaling message.

Step 313.MME will register in DL information transfer message and accept forwards to wireless device

Step 314.MME and IWS confirm that A21-1x air interface signaling message is received in second at Tack-21.

In a single day step 315. receives CDMA2000 1x registration and accepts message, and the GCSNAAck that wireless device just will be encapsulated in the UL information transfer message is transferred to MME.

Step 316.MME gives IWS with the GCSNAAck forwards in the A21-1x air interface signaling message.

Step 317.IWS and MME confirm that A21-1x air interface signaling message is received in second at Tack-21.

Figure 26 illustrates the instance of the intercommunication MT call flow that is used for CSFB.

Step 401. wireless device is connected to the LTE network, and registers to CDMA2000 1x MSC through the IWS that indicates wireless device to be arranged in the LTE network.

Step 402.CDMA2000 1x MSC is through the position of log-on message identification wireless device, and use IWS CellID (or LAC) sends paging request message.

Step 403. simultaneously, MSC send identical paging request message to by with registration message in the 1x BS that discerns of the relevant LAC in CDMA2000 1x sub-district.By this way, 1x BS protocol processor can be from the wireless device waits page-response message.Otherwise 1x BS will abandon the received page-response message of being sent by wireless device after it return back to CDMA2000 1x network.

Step 404.IWS is encapsulated in paging information among the GCSNA and according to A21-1x air interface signaling message and sends to MME.

Step 405.MME is forwarded to wireless device with the GCSNA message in the DL information transfer message through the LTE air link.

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

In a single day step 407. receives beep-page message through the LTE tunnel, wireless device just starts the disconnection with the 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.

Step 409.1x BS passes to MSC with page-response message.

Step 410, MSC send request for allocation then and set up with the Traffic Channel that request is used for wireless device to 1x BS.

Activate business channel assignment message (ECAM) and send to wireless device of step 411,1x BS structure through CDMA2000 1x air interface.

Step 412, in case receive ECAM, wireless device is adjusted to the CDMA2000 Traffic Channel and is set up and the communicating by letter of 1x BS.

Step 413, after Traffic Channel is set up, 1x BS sends and has assigned message to MSC.

Figure 27 illustrates the embodiment of the intercommunication registration that is used for eCSFB.

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

The CDMA2000 1x registration message that step 502, wireless device will pass through tunnel in LTE UL information pass-along message is transferred to MME.The 1x registration message is through the GCSNA protocol encapsulation and can comprise IWS sub-district id information.

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

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

Step 505, IWS respond the reception of MME with indication GCSNA message with the GCSNAAck that is encapsulated in the A21-1x air interface signaling message.

Step 506, MME are delivered to wireless device with GCSNAAck branch journey on eNodeB.

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

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

Step 509, MSC upgrade with the position and accept message response IWS.

Step 510, after MSC receives affirmation, IWS structure CDMA2000 1x registration is accepted message and is sent to MME through A21-1x air interface signaling message.

Step 511, MME will register in DL information pass-along message and accept message branch journey and be delivered to wireless device.

Step 512, MME and IWS confirm to receive A21-1x air interface signaling message in second at Tack-21.

Message is accepted in the registration by the GCSNA encapsulation that step 513, foundation receive, and the GCSNAAck that wireless device will encapsulate in UL information pass-along message is transferred to MME.

Step 514, MME are delivered to IWS with A21-1x air interface signaling message with GCSNAAck message branch journey.

Step 515, IWS and MME confirm to receive A21-1x air interface signaling message in second at Tack-21.

In some are realized, in registration message, provide the CDMA2000 1x cell information that is associated maybe be dispensable, this is because other 1x message of page response and some is transmitted through the LTE tunnel for eCSBF.MSC only need know that the position of wireless device is so that can send paging request message.

Figure 28 is illustrated in the embodiment that is used for the intercommunication MO calling procedure of eCSFB under the IWS situation independently.

Step 601, have the wireless device of eCSBF ability to be attached to LTE network and decision to carry out CDMA2000 1x MO and call out.

Step 602, wireless device are adjusted to CDMA2000 1x network and are carried out the pilot signal measurement of neighbours 1x sub-district away from the LTE network that connects.

Step 603, wireless device turns back to the LTE network after measurement, and will be risen by the 1x of GCSNA protocol encapsulation and exhale message to be transferred to MME through the LTE air interface.Wireless device should provide the CDMA2000 1x that comprises sub-district ID and radio environment measurements cell information.

Step 604, MME arrive IWS with A21-1x air interface signaling message with this forwards.

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

Step 606, IWS use IWS sub-district id information structure demand for services and are sent to MSC.

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

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

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

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

Step 611,1x BS are with switching Ack response MSC.

Step 612, MSC issue IWS with switching command behind the switching Ack that receives from 1x BS.

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

Step 614, MME are delivered to wireless device with this message branch journey.

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

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

Step 617, MME are delivered to IWS with A21-1x air interface signaling message with it.

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

Step 619, wireless device and LTE communicate by letter and are connected and return to CDMA2000 1x network to end LTE.

Step 620, IWS send to switch and begin to MSC to trigger handoff procedure.

Step 621, wireless device are adjusted to CDMA2000 1x wireless frequency to obtain the 1x signaling.

Step 622, in case obtain the 1x signaling, wireless device sends and handoffs completion message to 1x BS.1x BS arrives MSC with this forwards.

Step 623, MSC send clear command to IWS.

Step 624, IWS remove the resource that is assigned to wireless device earlier, and respond with removing to accomplish.

Figure 29 is illustrated in the embodiment of the intercommunication MO calling that is used for eCSFB under the integrated IWS-1xBS situation.

Step 701, have the wireless device of eCSBF ability to be attached to LTE network and decision to carry out CDMA2000 1x MO and call out.

Step 702, wireless device are adjusted to CDMA2000 1x network and are carried out the pilot signal measurement of neighbours 1x sub-district away from the LTE network that connects.

Step 703, wireless device turns back to the LTE network after measurement, and will be risen by the 1x of GCSNA protocol encapsulation and exhale message to be transferred to MME through the LTE air interface.Wireless device should provide the CDMA2000 1x that comprises sub-district ID and radio environment measurements cell information.

Step 704, MME arrive IWS with A21-1x air interface signaling message with this forwards.

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

Step 706, IWS-1xBS use IWS sub-district id information structure demand for services and are sent to MSC.

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

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

Step 709, IWS-1xBS construct general switch indicating information (UHDM) and send to MME with the CDMA2000 1x cell information that receives.

Step 710, MME are delivered to wireless device with this message branch journey.

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

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

Step 713, MME are delivered to IWS-1xBS with A21-1x air interface signaling message with it.

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

Step 715, wireless device and LTE communicate by letter and are connected and return to CDMA2000 1x network to end LTE.

Step 716, wireless device are adjusted to CDMA2000 1x wireless frequency to obtain the 1x signaling.

Step 717, in case obtain the 1x signaling, wireless device sends and handoffs completion message to IWS-1x BS.

Figure 30 is illustrated in the embodiment that is used for the intercommunication MT calling procedure of eCSFB under the IWS situation independently.

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

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

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

Step 804, MME are delivered to wireless device with DL information pass-along message with this beep-page message.

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

The beep-page message that step 806, foundation receive through the LTE tunnel, wireless device is adjusted to CDMA2000 1x network and is carried out the pilot signal measurement of neighbours 1x sub-district away from the LTE network that connects.

Step 807, wireless device turns back to the LTE network after measurement, and will be transferred to MME through the LTE air interface by the 1x page-response message of GCSNA protocol encapsulation.Wireless device should provide the CDMA2000 1x that comprises sub-district ID and radio environment measurements cell information.

Step 808, MME arrive IWS with A21-1x air interface signaling message with this forwards.

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

Step 810, IWS use IWS sub-district 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 having assigned message response MSC.

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

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

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

Step 816, MSC issue IWS with switching command behind the switching Ack that receives from 1x BS.

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

Step 818, MME are delivered to wireless device with this message branch journey.

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

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

Step 821, MME are delivered to IWS with A21-1x air interface signaling message with it.

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

Step 823, wireless device and LTE communicate by letter and are connected and return to CDMA2000 1x network to end LTE.

Step 824, IWS send to switch and begin to MSC to trigger handoff procedure.

Step 825, wireless device are adjusted to CDMA2000 1x wireless frequency to obtain the 1x signaling.

Step 826, in case obtain the 1x signaling, wireless device sends and handoffs completion message to 1x BS.1x BS arrives MSC with this forwards.

Step 827, MSC send clear command to IWS.

Step 828, IWS remove the resource that is assigned to wireless device earlier, and respond with removing to accomplish.

Figure 31 is illustrated in the embodiment of the intercommunication MT calling that is used for eCSFB under the integrated IWS-1xBS situation.

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

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

Step 903:IWS-1xBS arrives MME with this message through A21-1x air interface signaling forwards.

Step 904:MME is delivered to wireless device with this beep-page message in DL information pass-along message.

Step 905:MME uses A21-Ack message that IWS-1xBS is made and replys to confirm the reception of A21-1x air interface signaling message.

Step 906: when receiving beep-page message through the LTE tunnel, wireless device from the LTE network that connects be tuned to CDMA2000 1x network and carry out the pilot signal measurement of contiguous 1x sub-district.

Step 907: wireless device turns back to the LTE network after measuring, and sends to MME through the LTE air interface 1x page-response message that the GCSNA agreement is packaged.Wireless device should provide the CDMA2000 1x cell information that comprises that sub-district ID and radio environment are measured.

Step 908:MME is forwarded to IWS-1xBS with this message in A21-1x air interface signaling message.

Step 909:IWS-1xBS uses A21-Ack that MME is made at Tack-21 and replys to confirm the reception of A21-1x air interface signaling message in second.

Step 910:IWS-1xBS uses IWS sub-district id information structure page response and sends to MSC.

Step 911: when receiving page-response message, MSC sends to IWS-1xBS with allocation request message.

Step 912:IWS-1xBS uses and to have assigned message and MSC is made reply.

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

Step 914:MME is delivered to wireless device with this message branch journey.

Step 915:MME sends to IWS-1xBS to confirm the reception of A21-1x air interface signaling message with A21-Ack message.

Step 916: wireless device sends to MME through the LTE tunnel with GCSNAAck message.

Step 917:MME is delivered to IWS-1xBS with it in A21-1x air interface signaling message.

Step 918:IWS-1xBS sends to IWS to confirm the reception of A21-1x air interface signaling message with A21-Ack message.

Step 919: wireless device and LTE communicate to end LTE and are connected and return to CDMA2000 1x network.

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

Step 921: in case the 1x signaling is obtained, wireless device just sends to IWS-1xBS with handoff completion message.

Radio station for example base station or wireless device can comprise for example microprocessor of processor electronic equipment, and it is realized such as one or more technological methods that in presents, exist.Radio station can comprise through one or more communication interfaces antenna transmission and/or receive the transceiver electronic equipment of wireless signal for example.Radio station can comprise other communication interface that is used to transmit and receive data.Radio station can comprise and is configured to for example one or more memories of data and/or instruction of stored information.

In can in Fundamental Digital Circuit or at computer software, firmware or hardware,---being included in disclosed structure and structural equivalents form thereof in the presents---or be implemented in disclosed and other execution mode and the feature operation of describing in the presents in the one or more combination in them.Disclosed and other execution mode can be implemented as one or more computer programs; That is, be used for carrying out or one or more modules of calculation of coding machine program command on computer-readable medium of the operation of control data processing unit by data processing equipment.Computer-readable medium can be constituent or the one or more combination in them of the object of machine readable storage device, machine readable storage carrier, memory devices, realization machine readable transmitting signal.Term " data processing equipment " comprises all devices, equipment and the machine that is used for deal with data, comprises programmable processor, computer or a plurality of processor or computer as an example.Device also can be included as the computer program of being discussed and create code, protocol stack, data base management system, operating system or the one or more combination in them that the code of execution environment for example constitutes the processor firmware except hardware.Transmitting signal is the artificial signal that produces, the electricity, light or the electromagnetic signal that produce of machine for example, and it is produced the information coding is used to be transferred to suitable receiver apparatus.

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

Process of in presents, describing and logic flow can be carried out by one or more programmable processors, and these processors are carried out one or more computer programs to carry out function through operating data and generation output.Process and logic flow also can by dedicated logic circuit for example FPGA (field programmable gate array) or ASIC (application-specific integrated circuit (ASIC)) carry out, or device also can be implemented as said dedicated logic circuit.

The processor that is suitable for computer program comprises any one or a plurality of processor of the digital computer of general and special microprocessor and any kind 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 that is used to execute instruction and is used for store instruction and one or more memory devices of data.Usually, computer also comprises one or more mass-memory units for example disk, magneto optical disk or the CD that is used to store data, or operatively be coupled into from these mass-memory units receive data, with transfer of data to mass-memory unit, or both.Yet computer does not need such equipment.Be suitable for nonvolatile memory, medium and memory device that storage computation machine program command and data computing machine computer-readable recording medium comprise form of ownership, comprise semiconductor memory devices for example EPROM, EEPROM and flash memory device as an example; Disk is internal hard drive or removable dish for example; Magneto optical disk; And CD ROM and DVD-ROM dish.Processor and memory can or be incorporated in the dedicated logic circuit by supplemented.

Though presents comprises a lot of details, these details are not interpreted as the restriction to the scope of the present invention that is asked to maybe can be asked to, and more properly are interpreted as the description of the specific peculiar characteristic of execution mode.Some characteristic of under the background of independent execution mode, in presents, describing also can combine single execution mode to realize.On the contrary, also can in a plurality of execution modes or in any suitable son combination, realize dividually in the various characteristics of describing under the background of single execution mode.And; Though characteristic is described to work in some embodiments at preceding text; And even likewise advocated at first, can remove from this combination in some cases from one or more characteristics of the combination of being advocated, and the combination of being advocated can turn to the distortion of son combination or son combination.Similarly, though with specific order operation has been described in the accompanying drawings, this should not be understood that to require such operation with shown in particular order or be performed or the operation shown in all is performed and realizes the result that expects with continuous order.

Several examples and realization are only disclosed.Can change, change and strengthen said realization and other realization according to disclosed content.

Claims (20)

1. one kind is used for method of wireless communication, comprising:

Communicate based on first wireless technology and first network;

Based on second wireless technology that is different from said first wireless technology with communicate corresponding to the switching center of second network, wherein said switching center is configured as the message of handling the one or more equipment on said second network; And

Based on said second wireless technology, transaction message between wireless device that communicates on said first network and said switching center, wherein transaction message comprises through said first network and said wireless device and communicating.

2. the method for claim 1, the message of wherein being concluded the business comprises Short Message Service (SMS) message.

3. the method for claim 1, the message of wherein being concluded the business comprises beep-page message.

4. the method for claim 1, wherein said wireless device is initiated from said first network switching to said second network.

5. the method for claim 1 also comprises:

Operate said switching center to initiate from said first network switching to said second network.

6. one kind is used for method of wireless communication, comprising:

Communicate based on first wireless technology and first base station; And

Based on second wireless technology that is different from said first wireless technology and interoperability services transaction message, said interoperability services communicates with the switching center that is relevant to said second wireless technology.

7. method as claimed in claim 6, the message of wherein being concluded the business comprise Short Message Service (SMS) message.

8. method as claimed in claim 6, the message of wherein being concluded the business comprises beep-page message.

9. method as claimed in claim 6, wherein said wireless device is initiated from said first network switching to said second network.

10. method as claimed in claim 6 also comprises:

Operate said switching center to initiate from said first network switching to said second network.

11. a system that is used for radio communication comprises:

The circuit that communicates based on first wireless technology and first network;

Based on second wireless technology that is different from said first wireless technology and the circuit that communicates corresponding to the switching center of second network, wherein said switching center is configured to handle the message of the one or more equipment on said second network; And

Based on said second wireless technology, the circuit of transaction message between wireless device that communicates on said first network and said switching center, wherein transaction message comprises through said first network and said wireless device and communicating.

12. system as claimed in claim 11, the message of wherein being concluded the business comprise Short Message Service (SMS) message.

13. system as claimed in claim 11, the message of wherein being concluded the business comprises beep-page message.

14. system as claimed in claim 11, wherein said wireless device is initiated from said first network switching to said second network.

15. system as claimed in claim 11 also comprises:

Operate said switching center to initiate the circuit of switching from said first network to said second network.

16. a system that is used for radio communication comprises:

The circuit that communicates based on first wireless technology and base station; And

Based on the circuit of second wireless technology that is different from said first wireless technology and interoperability services transaction message, said interoperability services communicates with the switching center that is relevant to said second wireless technology.

17. system as claimed in claim 16, the message of wherein being concluded the business comprise Short Message Service (SMS) message.

18. system as claimed in claim 16, the message of wherein being concluded the business comprises beep-page message.

19. system as claimed in claim 16, wherein said wireless device is initiated from said first network switching to said second network.

20. system as claimed in claim 16 also comprises:

Operate said switching center to initiate the circuit of switching from said first network to said second network.

Images