WO2017113118A1 - 业务回落方法、装置、以及通信系统 - Google Patents

业务回落方法、装置、以及通信系统 Download PDF

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Publication number
WO2017113118A1
WO2017113118A1 PCT/CN2015/099548 CN2015099548W WO2017113118A1 WO 2017113118 A1 WO2017113118 A1 WO 2017113118A1 CN 2015099548 W CN2015099548 W CN 2015099548W WO 2017113118 A1 WO2017113118 A1 WO 2017113118A1
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Prior art keywords
measurement
wireless network
terminal
cell
signal strength
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PCT/CN2015/099548
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English (en)
French (fr)
Inventor
秦彦
张达亮
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华为技术有限公司
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Priority to PCT/CN2015/099548 priority Critical patent/WO2017113118A1/zh
Publication of WO2017113118A1 publication Critical patent/WO2017113118A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a service fallback method, apparatus, and communication system.
  • wireless networks not only provide voice services, but also provide rich and colorful data services.
  • voice services in traditional 2G and 3G networks, such as GSM/EDGE Radio Access Network (GERAN), where GSM is Global System for Mobile communication, EDGE is enhanced.
  • GERAN GSM/EDGE Radio Access Network
  • LTE Evolution Enhanced Data Rates for GSM Evolution
  • UTRAN Universal Terrestrial Radio Access Network
  • CS Circuit Switched
  • PS Packet Switching
  • 2G/3G networks are mature, and 4G networks are still in the initial stage of deployment.
  • Voice services often need to be dropped back into 2G/3G networks to ensure the quality of voice communication under 4G networks.
  • traditional 2G/3G networks can be reused. Resources to protect investment.
  • business fallback in order to ensure the user experience, the service is preferentially dropped back to the 3G network.
  • the current fallback technology will appear when the 3G network can provide services, but the business will fall back to the 2G network, which will affect the user's physical examination.
  • the embodiment of the present application provides a service fallback method, device, and communication system.
  • the system will give priority to returning the business to the expected network to ensure the user experience.
  • the present application provides a service fallback method for dropping a service of a terminal from a PS wireless network to a CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network, and the method includes RAN device execution in a PS wireless network, including:
  • the RAN device sends the first measurement control information and the second measurement control information to the terminal, where the RAN device performs the first measurement and the second measurement on the first CS wireless network, where the first measurement is performed.
  • the second measurement is the cell measurement of the adjacent frequency point;
  • the RAN device drops the service of the terminal back to the target CS wireless network.
  • the present application provides a service fallback method, in which a service for a terminal is dropped from a PS wireless network to a CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network, and the method includes include:
  • the terminal receives the first measurement control information and the second measurement control information that are sent by the RAN device in the PS wireless network, where the first measurement control information and the second measurement control information are used to instruct the terminal to perform the first measurement on the first CS wireless network, respectively. And a second measurement, wherein the first measurement is a signal measurement of an adjacent system neighboring cell, and the second measurement is a cell measurement of an adjacent frequency point;
  • the terminal performs the first measurement and the second measurement according to the first measurement control information and the second measurement control information, respectively;
  • Determining, by the first measured measurement result and the second measured measurement result, whether the report report of the first measurement is reported, and whether the measurement report of the second measurement is reported, wherein one or all of the first measurement and the second measurement are reported The case is used to determine a target CS wireless network in which the service of the terminal falls back, wherein the target CS wireless network is a first CS wireless network or a second CS wireless network;
  • the terminal performs CS service on the target CS wireless network.
  • the application provides a service fallback device, configured to drop a service of a terminal from a PS wireless network to a CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network, and the device application RAN device in a PS wireless network, and includes:
  • a sending unit configured to send, by the terminal, the first measurement control information and the second measurement control information to the terminal, where the terminal performs the first measurement and the second measurement on the first CS wireless network, where
  • the first measurement is a signal measurement of the adjacent system neighboring cell
  • the second measurement is a cell measurement of the adjacent frequency point
  • a determining unit configured to determine, according to the reporting situation of the terminal, the one or the other of the first measurement and the second measurement, the target CS wireless network, where the target CS wireless network is the first CS wireless network or the second CS wireless network;
  • the fallback unit is configured to drop the service of the terminal into the target CS wireless network.
  • the present application provides a RAN device, including a processor and a memory, the memory is used to store a program, and the processor calls a program stored in the memory to perform the method provided by the first aspect of the present application.
  • the application provides a service fallback device, where a service for a terminal is dropped from a PS wireless network to a CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network, and the device Applied to the terminal, and includes:
  • a receiving unit configured to receive first measurement control information and second measurement control information that are sent by the RAN device in the PS wireless network, where the first measurement control information and the second measurement control information are used to indicate the terminal to the first CS wireless network, respectively Performing a first measurement and a second measurement, where the first measurement is a signal measurement of an adjacent system neighboring cell, and the second measurement is a cell measurement of an adjacent frequency point;
  • a measuring unit configured to perform the first measurement and the second measurement according to the first measurement control information and the second measurement control information, respectively;
  • a measurement result processing unit configured to determine whether to report the measurement report of the first measurement, and report the measurement report of the second measurement, where the first measurement and the second measurement are performed according to the measurement result of the first measurement and the measurement result of the second measurement
  • One or all of the reporting conditions are used to determine the industry of the terminal a target CS wireless network, wherein the target CS wireless network is a first CS wireless network or a second CS wireless network;
  • the CS service processing unit is configured to perform CS service on the target CS wireless network.
  • the present application provides a terminal, including a processor and a memory, the memory is used to store a program, and the processor calls a program stored in the memory to perform the method provided by the second aspect of the present application.
  • the present application further provides a communication system, including a PS wireless network, a first CS wireless network, and a second CS wireless network, where the first PS wireless network further includes a RAN device, where the RAN device includes the device of the third aspect.
  • the RAN device is as described in the fourth aspect.
  • the RAN device when the terminal has a service fallback requirement, the RAN device hopes to preferentially drop the service of the terminal to which CS wireless network (for example, the first CS wireless network), and then deliver the CS wireless network to the terminal. Signal measurement control of adjacent system neighboring cells and cell measurement control of adjacent frequency points. And the reporting of the two measurements can be used as the basis for the RAN device to determine the target CS wireless network where the terminal service falls.
  • CS wireless network for example, the first CS wireless network
  • the terminal can learn the cell measurement through the adjacent frequency point, and notify The RAN device, so that the RAN device drops the service of the terminal into the CS wireless network to improve the user experience.
  • the first CS wireless network is a preferred CS wireless network, such as a UMTS network
  • the second CS wireless network is a candidate CS wireless network, such as a GSM network.
  • the PS wireless network is, for example, an LTE network.
  • the service that is dropped back is the voice service, so that the terminal that needs to perform voice service is preferentially dropped back to the UMTS network to improve the user experience.
  • the terminal may send a request message to the RAN device when there is a CS service demand, that is, when there is a service fallback request, the request message is used to notify the network side that the terminal has a CS service requirement.
  • the RAN device sends the request message to the CN device to notify the CN device that the terminal has a CS service requirement.
  • the CN device knows that the terminal has a CS service demand, the CN device sends a fallback indication to the RAN device to instruct the RAN device to drop the service of the terminal to the CS wireless network. in this way, The RAN device may determine that the terminal has a service fallback requirement when receiving the fallback indication, thereby transmitting the first measurement control information and the second measurement control information to the terminal.
  • the RAN device may also send the first measurement control information and the second measurement control information to the terminal after receiving the request message sent by the terminal.
  • the apparatus of the above third aspect further includes a triggering unit configured to trigger transmission of the first measurement control information and the second measurement control information upon receiving the fallback indication or the request message.
  • the apparatus of the above fifth aspect includes a sending unit, configured to send the request message.
  • the first measurement control information includes a cell identifier of a neighboring cell of the different system; and the second measurement control information includes information of a neighboring frequency point.
  • the reporting of the first measurement is an event triggering report
  • the terminal reports the measurement report of the first measurement when the measured signal strength of the neighboring area meets the first preset requirement; wherein the first preset requirement can be passed
  • the signal strength threshold is used to indicate that, for example, when the signal strength of the neighboring cell measured by the terminal reaches or exceeds the signal strength threshold, the measurement report of the first measurement is reported.
  • the terminal can report the measurement report when there is a cell in the neighboring cell that can provide the service, so that the air interface resource can be saved.
  • the RAN device can directly use the measurement report to perform service fallback, thereby reducing the complexity of the RAN device processing.
  • the first measured measurement report may include an identifier of a neighboring cell whose signal strength satisfies a first preset requirement, and may also include a signal strength of the neighboring zone. In this way, in the process of performing the fallback by handover, the RAN device can switch the terminal to the neighboring cell identified by the identifier in the measurement report.
  • the second measurement is a periodic measurement.
  • the reporting condition of the first measurement is used as the basis for determining the service fallback.
  • the reporting situation of the second measurement is used as the judgment basis for the service fallback.
  • the measurement report of the second measurement includes: the identifier of the cell with the strongest signal strength and the signal strength of the cell; the identifier of the cell whose signal strength meets the second preset requirement, or the identifier of the cell whose signal strength meets the second preset requirement And the signal strength of the cell; or, the measured adjacent frequency
  • the identity and signal strength of all cells in the point may be the same as or different from the first preset requirement. In addition, it can also be reflected by the signal strength threshold. If the terminal reports the second measurement by the second preset requirement, the air interface resource can be saved. Moreover, the RAN device can directly use the measurement report to perform service fallback, thereby reducing the complexity of the RAN device processing.
  • whether the target CS wireless network is the first CS wireless network or the second CS wireless network may include the following:
  • the RAN device When the RAN device receives the measurement report of the first measurement within a preset time, and the measurement report includes the neighboring area whose signal strength meets the first preset requirement, that is, the terminal reports the measurement report of the first measurement within a preset time, And the measurement report includes determining that the target CS wireless network is the first CS wireless network when the signal strength meets the first preset requirement; or
  • the RAN device When the RAN device receives the measurement report of the second measurement within a preset time, and the measurement report includes the cell whose signal strength meets the second preset requirement, that is, the terminal receives the measurement report of the second measurement within the preset time, And determining that the target CS wireless network is the first CS wireless network when the measurement report includes the cell whose signal strength meets the second preset requirement; or
  • the target CS wireless network is a second CS wireless network
  • the first measurement measurement report does not include the neighboring area that satisfies the first preset requirement
  • the second measurement When the measurement report does not include the cell that meets the second preset requirement, that is, the terminal receives one or all of the measurement report of the first measurement and the measurement report of the second measurement within the preset time, in the measurement report of the first measurement
  • the neighboring area that meets the first preset requirement is not included, and when the second measurement measurement report does not include the cell that meets the second preset requirement, the target CS wireless network is determined to be the second CS wireless network.
  • the RAN device may further determine, when receiving the measurement report of the second measurement, whether the cell in the measurement report is a neighboring cell of the serving cell of the terminal; when in the measurement report When the cell is not a neighboring cell of the serving cell of the terminal, the cell is added as a neighboring cell of the serving cell of the terminal.
  • the apparatus of the above third aspect includes a neighboring area management unit for performing the neighboring area adding operation; the processor of the above fourth aspect is for performing the neighboring area adding operation. In this way, in the process of service fallback, the automatic neighboring zone addition can be completed at the same time, and the operation and maintenance efficiency of the neighboring zone planning is improved.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a current service fallback method
  • FIG. 3 is a schematic diagram of a neighboring cell specification of an LTE coverage area according to an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a service fallback method according to an embodiment of the present application.
  • FIG. 5 is a flowchart of another service fallback method according to an embodiment of the present application.
  • FIG. 6 is a flowchart of still another method for service fallback according to an embodiment of the present application.
  • FIG. 7 is a flowchart of still another method for service fallback according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a service fallback method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a service fallback device according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another service fallback device according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of still another service fallback device according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a RAN device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of a service fallback device according to an embodiment of the present application.
  • FIG. 14 is a schematic diagram of another service fallback device according to an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a terminal according to an embodiment of the present application.
  • the terminal also known as User Equipment (UE)
  • UE User Equipment
  • the terminal also known as User Equipment (UE)
  • UE User Equipment
  • voice and/or data connectivity such as handheld devices with wireless connectivity, in-vehicle devices, other processing devices connected to wireless modems, and the like.
  • the RAN device is a device that accesses the terminal to the wireless network, including but not limited to: an evolved Node B (eNB), and a wireless network in a Radio Network Subsystem (RNS). Controller (Radio Network Controller, RNC), Node B (Node B, NB), Base Station Controller (BSC) in Base Station Subsystem (BSS), Base Transceiver Station (Base Transceiver Station, BTS), a home base station (for example, Home evolved NodeB, or Home Node B, HNB), a BaseBand Unit (BBU), a Wifi Access Point (AP), and the like.
  • RNC Radio Network Controller
  • Node B Node B
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • BTS Base Transceiver Station
  • HNB Home evolved NodeB, or Home Node B, HNB
  • BBU BaseBand Unit
  • AP Wifi Access Point
  • PS wireless network refers to a wireless network in which all services are transmitted in the form of packet switching, such as an LTE network;
  • a CS wireless network refers to a wireless network having a circuit switched transmission form, which may or may not have packet switching.
  • Transmission form such as UMTS network, GSM network.
  • Multiple means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes a RAN device 110 and a Core Network (CN) device 120 in a 2G/3G network, and a RAN device 130 and a CN device 140 in the 4G network.
  • the RAN device 110 in the 2G/3G network is, for example, a GERAN/UTRAN device, such as a BSS/RNS; and the CN device 120 in the 2G/3G network is, for example, a mobile switching center (Mobile). Switching Center, MSC).
  • Mobile Mobile
  • Switching Center MSC
  • the RAN device 130 of the 4G network is, for example, an evolved UTRAN (Evolved UTRAN) device, such as an eNB;
  • the CN device 140 of the 4G network is, for example, an MME.
  • the MSC 120 and the MME 140 are connected through an SGs interface to implement information exchange between the 2G/3G network and the 4G network.
  • the circuit 150 is dropped back to the CS wireless network for voice service by using Circuit Switched Fallback (CSFB) technology, that is, the 4G network falls back to the 4G network.
  • CSFB Circuit Switched Fallback
  • 2G/3G networks voice services are then carried out on 2G/3G networks.
  • the CSFB process mainly includes the following steps:
  • S110 The MME 140 is notified when the terminal 150 in the 4G network has a CS service requirement.
  • the terminal 150 may notify the MME 140 that it has a CS service demand by transmitting an extended service request message to the MME.
  • the MME 140 After receiving the notification of the terminal 150, the MME 140 instructs the eNB 130 to perform the fallback.
  • the MME 140 may instruct the eNB 130 to drop the terminal back into the 2G/3G network by transmitting CS fallback indicator signaling to the eNB 130.
  • the eNB 130 triggers the terminal 150 to fall back.
  • the specific eNB 130 can drop the terminal 150 back into the 2G/3G network by switching or redirecting.
  • the service is preferentially dropped back to the 3G network.
  • the service is dropped back to the 2G network.
  • the signal measurement of the adjacent system neighboring area is used to determine whether the 3G network can provide the service, and if the 3G network can serve, the service is dropped back to the 3G network, and the 3G network is If the service is not available, the service will be returned to the 2G network.
  • FIG. 2 is a schematic diagram of a current service fallback method.
  • the terminal when the signal neighboring area of the different system is found to detect the neighboring area of the different system with good signal quality, the terminal is preferentially caused to fall back to the neighboring area of the different system obtained by the measurement.
  • the eNB sends measurement control information to the terminal (S210), and instructs the terminal to measure the signal of the UMTS neighbor.
  • the terminal performs measurement on the UMTS neighboring area specified by the measurement control information (S220).
  • the terminal determines that the signal quality of the UMTS neighboring area meets the requirement, for example, when the preset threshold is reached or exceeded, the terminal reports the measurement report to the eNB (S230).
  • the eNB can learn that the signal quality of the UMTS neighboring area is good according to the measurement report, so that the terminal can be controlled to fall back to the UMTS (S240).
  • the terminal does not measure the UMTS neighboring cell whose signal quality meets the requirements, the terminal does not report the measurement report to the eNB. If the eNB does not receive the measurement report reported by the terminal within a preset time period (which can be controlled by the protection timer), it is considered that the UMTS cannot provide a good service, and therefore the control terminal falls back to the GSM (S250).
  • the single frequency point carries at most 32 different system neighboring cells to be measured.
  • the single frequency point carries at most 32 UMTS neighboring cells, that is, the measurement control information sent in the above step S210, and the single frequency point carries at most 32 to Measured UMTS neighbors.
  • the LTE low frequency band is gradually being put on the market in large quantities, and the low frequency band has wider coverage than the high frequency band, so it is easy to appear that the LTE single frequency point exceeds 32 UMTS neighboring areas. In this scenario, some areas have UMTS coverage, but due to LTE measurement control specification restrictions, they are not sent in measurement control, which causes the terminal to fail to fall back to UMTS, and the problem of falling back to GSM affects user experience.
  • FIG. 3 is a schematic diagram of a neighboring cell specification of an LTE coverage area according to an embodiment of the present application.
  • the LTE coverage area 310 has more than 32 UMTS neighbors, identified by UMTS 1 ... UMTS 33 ..., and n GMS neighbors, identified by GSM 1 ... GSM n, where n is less than or A positive integer equal to 32.
  • the terminal 300 initiates a voice call in the LTE coverage area 310 (the terminal can also be used as a called party, here taking the calling party as an example). At this time, the terminal 300 is in the "33" UMTS neighboring area coverage area.
  • the eNB sends the signal measurement control of the UMTS neighboring cell to the terminal in order to preferentially drop the terminal 300 into the UMTS network.
  • the eNB can only send the signal measurement control of the 32 UMTS neighbors. Therefore, although the "33" is configured
  • the UMTS neighbors cannot be delivered, so the terminal 300 cannot measure them.
  • the terminal 300 is dropped back to the GSM network. It can be seen that if the terminal has UMTS coverage, it still falls back to the GSM network and cannot obtain a better user experience.
  • the present application considers the above problem, and proposes a service fallback scheme under the premise of conforming to the agreement.
  • the terminal can be preferentially dropped back to UMTS network to enhance the user experience.
  • the network side sends the cell measurement control of the adjacent frequency point to the terminal, and the measurement of the two measurements is performed.
  • the report can be used as the basis for determining which CS wireless network to fall back to, so that even if the network side does not receive the measurement report of the signal measurement of the neighboring system of the different system, as long as the UMTS has a cell with good signal quality, it can pass the adjacent frequency point.
  • the cell measurement triggers the terminal's service to fall back to the UMTS network.
  • the service of the terminal is dropped back into the GSM network only when both measurements show that the UMTS is not suitable as the target network for traffic fallback.
  • the above solution can ensure that the terminal preferentially falls back to the UMTS network in the scenario where the number of neighbors in the single-frequency point is over-specified, thereby improving the user experience.
  • the solution is applicable not only to the service drop process between LTE and UMTS/GSM, but also to the service fallback process between other PS wireless networks and CS wireless networks.
  • FIG. 4 is a flowchart of a service fallback method according to an embodiment of the present application.
  • the method is for dropping traffic of a terminal in a PS wireless network from the PS wireless network to a CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network, and the first CS wireless network is preferred
  • a CS wireless network such as a UMTS network
  • the method includes the following steps:
  • the RAN device in the PS wireless network sends the first measurement control information and the second measurement control information to the terminal to indicate the terminal to the first CS, when the terminal has a service fallback requirement.
  • the wireless network performs the first measurement and the second measurement, wherein the first measurement is a signal measurement of the adjacent system neighboring cell, and the second measurement is a cell measurement of the adjacent frequency point.
  • the signal measurement of the adjacent system neighboring cell refers to a process of measuring a signal of a cell specified in the first measurement control information.
  • the cell measurement of the adjacent frequency point refers to a process of measuring the cell of the frequency point specified in the first measurement control information.
  • the RAN device determines, according to the reporting situation of the first measurement and/or the second measurement by the terminal, the target CS wireless network, where the target CS wireless network is the first CS wireless network or the second CS wireless network.
  • S430 The RAN device drops the service of the terminal to the target CS wireless network.
  • the RAN device may determine that the terminal has a service fallback request when receiving the fallback indication sent by the core network device, and may also send the receiving terminal to notify the network side that the terminal has circuit switched service.
  • the request message is requested, it is determined that the terminal has a service fall requirement.
  • the present application is not limited thereto. Any scenario in which the terminal has a CS service requirement and needs to be dropped may use the new cell or the existing cell in the scenario as the triggering RAN device to send the first measurement control information and the first Second, the way to measure control information.
  • the first measurement control information includes a cell identifier of a neighboring cell of the different system, for example, a physical cell identifier (PCI), so that the terminal performs measurement on the cell identified by the cell identifiers.
  • the first measurement control information carries a cell identifier of at least 32 neighboring cells of the different system according to the requirements of the protocol.
  • the reporting form of the measurement report of the first measurement of the terminal may be configured, and the event is triggered by the event triggering, that is, when the terminal measures that the signal strength of the neighboring area meets the preset requirement, for example, the preset threshold is reached or exceeded.
  • the measurement report is reported, and the neighboring area whose signal strength meets the preset requirement may be reported to the RAN device in the measurement report, or the signal strength of the neighboring area and the neighboring area may be simultaneously reported to the RAN device.
  • the first measurement control information may be B1 event measurement control information, and the first measurement performed by the terminal is a B1 event measurement.
  • the first measurement control information may also be B2 event measurement control information, and the first measurement performed by the terminal is a B2 event measurement.
  • Configuration of the report form of the terminal measurement report The RAN device may be implemented by using the first measurement control information, or may be pre-configured in the terminal, and is not limited herein.
  • the reporting form of the terminal measurement report may be configured as another reporting manner.
  • the periodic reporting manner the reporting form is required to report the signal strength of the neighboring cell periodically, and requires more air interface resources.
  • the configuration of the event triggering report can report only the neighboring areas whose signal strength meets the preset requirements, save air interface resources, and the base station can directly use the result of the measurement report to reduce the complexity of the RAN device.
  • the second measurement control information may include information of a neighbor frequency point, so that the terminal performs measurement on the cell of the neighbor frequency point.
  • This second measurement is preferably a period measurement.
  • the reporting manner of the measurement report of the second measurement of the terminal may be configured.
  • the periodic report may be configured, or may be configured as an event trigger report.
  • the terminal periodically measures the signal strength of the cell at the adjacent frequency point and reports it to the RAN device.
  • the measurement report of the first measurement is preferentially used to perform traffic fallback, so that the traffic is measured in advance by using the signal measurement of the adjacent system neighboring cell.
  • the cell measurement of the adjacent frequency point is supplemented to ensure the accuracy of the service fallback, and at the same time maximize the guaranteed service back to the UMTS network.
  • the periodic report only the cell whose signal strength meets the preset requirement may be reported, or the measured cell may be reported; if only the cell whose signal strength meets the preset requirement is reported, the measurement report may be The cell identifier is included, and the cell identifier and the signal strength of the cell are included, and the RAN device can directly use the measurement report to perform traffic fallback.
  • the measurement report includes the cell identifier and includes The signal strength of the cell
  • the RAN device can determine whether to perform traffic fallback according to the signal strength; in addition, the signal strength of the cell with the strongest signal strength and the cell strength can be reported only, and the RAN device determines whether to perform service fallback according to the signal strength of the strongest cell.
  • the number of the most powerful and small can be set in advance, for example, one or more, for example, three, and in the case where n (n is a positive integer greater than or equal to 1) is set in advance. That is, the first n cells with the strongest signal strength are reported. It should be noted that the signal is measured in the first measurement.
  • the preset requirement of the intensity may be the same as the preset requirement for the signal strength in the second measurement, or may be different, and is specifically set according to actual needs.
  • the RAN device may determine, according to the measurement report, whether the target CS wireless network may be the first CS wireless network, where A measurement report has a cell that meets the preset requirement, and the target CS wireless network is determined to be the first CS wireless network, and the target CS wireless network is determined only when the two measurement reports do not satisfy the preset requirement.
  • the step S420 may include any of the following cases:
  • the target CS wireless network is the first CS wireless network when the RAN device receives the measurement report of the first measurement within a preset time, and the measurement report includes the neighboring cell whose signal strength meets the first preset requirement;
  • the target CS wireless network is the first CS wireless network when the RAN device receives the measurement report of the second measurement within a preset time, and the measurement report includes the cell whose signal strength meets the second preset requirement;
  • the target CS wireless network is the second CS wireless network when the RAN device does not receive the first measured measurement report and the second measured measurement report within a preset time;
  • the target CS wireless network is determined to be the second CS wireless network.
  • Whether the signal strength of the neighboring cell in the first measurement satisfies the first preset requirement, and whether the signal strength of the cell in the second measurement meets the second preset requirement may be determined on the terminal side, and then only reported that the requirement is met.
  • the neighboring cell or the cell may also report the measured signal strength by the terminal, and the RAN device determines.
  • the reporting of the foregoing first measurement is an event triggering report, that is, when When the signal strength of the neighboring cell measured by the terminal meets the preset requirement, the measured neighboring cell identifier is reported, and the signal strength of the neighboring cell may also be reported at the same time.
  • the second measurement is a periodic measurement, and the reported measurement report may include: an identifier of the cell whose signal strength meets the preset requirement, or an identifier of the cell whose signal strength meets the preset requirement and a signal strength of the cell; the signal strength meets the preset The identifier of the strongest cell required, or the identity of the strongest cell whose signal strength meets the preset requirement and the signal strength of the cell.
  • the above step S420 preferentially uses the first measurement as the judgment basis of the service fallback.
  • the second measurement is used as the judgment basis of the service fallback.
  • the above service fallback method includes the steps shown in FIG. 5:
  • the RAN device sends the first measurement control information and the second measurement control information to the terminal when the terminal has the service fallback requirement.
  • the step is the same as the above step S410, and details are not described herein again.
  • step S520 The RAN device determines whether the measurement report of the first measurement is received within a preset time. When it is received, step S530 is performed, otherwise step S540 is performed.
  • the RAN device determines that the target CS wireless network is the first CS wireless network.
  • step S540 The RAN device determines whether the second measurement report is received; when it is received, step S530 is performed, otherwise step S550 is performed.
  • the RAN device determines that the target CS wireless network is the second CS wireless network.
  • S560 The RAN device drops the service of the terminal to the target CS wireless network.
  • the reporting of the first measurement is an event triggering report, that is, when the signal strength of the neighboring cell measured by the terminal meets the preset requirement, the measured neighboring cell identifier may be reported, and may also be reported simultaneously.
  • the second measurement is a periodic measurement, and the reported measurement report may include: an identifier of a cell with the strongest signal strength and a signal strength of the cell; and a measured identity and signal strength of all cells of the neighboring frequency point.
  • the above step S420 preferentially uses the first measurement as the judgment basis of the service fallback.
  • the second measurement is used as the judgment basis of the service fallback.
  • the above service drop method is different from that shown in FIG. 5 in that it is required to determine whether the signal strength of the cell in the second measurement report satisfies a preset requirement, and when the preset requirement is met, the service is returned to the first.
  • CS wireless network Specific Please refer to Figure 6, including the following steps.
  • the RAN device sends the first measurement control information and the second measurement control information to the terminal when the terminal has the service fallback requirement.
  • the step is the same as the above step S410, and details are not described herein again.
  • step S620 The RAN device determines whether the measurement report of the first measurement is received within a preset time. When received, step S630 is performed, otherwise step S640 is performed.
  • the RAN device determines that the target CS wireless network is the first CS wireless network.
  • step S640 The RAN device determines whether the second measurement report is received; when it is received, step S650 is performed, otherwise step S660 is performed.
  • step S650 The RAN device determines whether the signal strength of the cell in the second measurement report meets a preset requirement, and when the preset requirement is met, step S630 is performed; otherwise, step S660 is performed.
  • S660 The RAN device determines that the target CS wireless network is the second CS wireless network.
  • the RAN device drops the service of the terminal to the target CS wireless network.
  • the RAN device may drop the service of the terminal into the target CS wireless network by switching or redirecting.
  • the target cell is determined, and the target cell may be a different system neighboring cell in the first measured measurement report, or may be a cell of a neighboring frequency point in the second measured measurement report.
  • the terminal is re-selected to access the neighbor cell or the neighbor of the different system by releasing the terminal.
  • the RAN device receives the measurement report of the second measurement, if the cell in the measurement report is a neighboring cell of the serving cell added as the terminal, the cell may be added as a neighboring cell of the serving cell, In the process of business fallback, the automatic neighborhood addition can be completed at the same time, and the operation and maintenance efficiency of the neighboring area planning can be improved.
  • FIG. 7 is a flowchart of a service fallback method according to an embodiment of the present application.
  • the method is used in a process in which a service of a terminal falls back from a PS wireless network to a CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network.
  • the method includes:
  • the terminal receives the first measurement control information sent by the RAN device in the PS wireless network. And the second measurement control information, where the first measurement control information and the second measurement control information are respectively used to instruct the terminal to perform the first measurement and the second measurement on the first CS wireless network, where the first measurement is a different system neighboring cell Signal measurement, the second measurement is a cell measurement of an adjacent frequency point;
  • S720 The terminal performs the first measurement and the second measurement according to the first measurement control information and the second measurement control information, respectively.
  • the terminal determines, according to the first measured measurement result and the second measured measurement result, whether to report the measurement report of the first measurement, and whether to report the measurement report of the second measurement, where one or all of the first measurement and the second measurement
  • the reporting situation is used to determine a target CS wireless network in which the terminal's service falls back, and the target CS wireless network is a first CS wireless network or a second CS wireless network;
  • S740 The terminal performs CS service on the target CS wireless network.
  • first measurement control information and the second measurement control information and the measurement and reporting forms and the reported content of the first measurement and the second measurement are the same as those in the above embodiments, and are not described herein again.
  • target CS wireless network is the first CS wireless network and the second CS wireless network, the description of the above embodiments will not be repeated here.
  • FIG. 8 is a schematic diagram of a service fallback method according to an embodiment of the present application. As shown in Figure 8, the following steps are included:
  • S810 The terminal sends an extended service request message to the MME to notify the MME that it has a CS service requirement.
  • the terminal when the terminal in the LTE network has a voice service requirement, for example, the terminal initiates a voice call, or when the terminal is called, the terminal may send an extended service request message to the MME. And the message arrives at the MME via the eNB.
  • the MME After receiving the extended service request message of the terminal, the MME knows that the terminal has a CS service requirement, and therefore indicates that the eNB performs the fallback of the terminal. Specifically, the eNB may return the terminal to the UMTS/GSM network by using the CS fallback indication.
  • the eNB may perform the sending in the foregoing embodiment.
  • the step of measuring the control information that is, the eNB transmits the first measurement control information and the second measurement control information to the terminal.
  • the step S830 may be performed after receiving the indication of the MME, or may be performed after the step S810, that is, after the eNB receives the extended service request message sent by the terminal, which is not limited in this application, and is performed after receiving the MME indication. For example.
  • the first measurement control information includes the cell identifier of the UMTS neighboring cell
  • the first measurement is the signal measurement of the UMTS neighboring cell
  • the second measurement control information includes the information of the UMTS adjacent frequency point
  • the second measurement is the cell of the UMTS adjacent frequency point. measuring.
  • S840 The terminal performs the first measurement and the second measurement according to the first measurement control information and the second measurement control information, respectively.
  • the first measurement is an event-triggered report.
  • the terminal measures that the signal strength of the neighboring area of the UMTS specified by the first measurement control information meets the preset requirement, that is, greater than or equal to the preset threshold, the terminal reports the first Measurement report of measurement (S850); otherwise, measurement report is not reported.
  • the measurement report of the identity and signal strength of the cell of the adjacent frequency point may be periodically reported, or only the signal strength of the reported signal may meet the preset requirement.
  • a measurement report of the identity of the cell of the adjacent frequency point (S860). When the cell of the adjacent frequency point is not measured, no report is performed.
  • the identifier of the cell that only reports the neighboring frequency point whose signal strength meets the preset requirement is taken as an example. Another case can be seen in the embodiment shown in FIG.
  • S870 The eNB returns the service of the terminal to the UMTS network when receiving the measurement report of any measurement of the first measurement and the second measurement.
  • the above steps S850 and S860 may be performed, or only one may be executed, that is, the terminal may report the measurement reports of two measurements, or only one of them may be reported.
  • the eNB can drop the service of the terminal back into the UMTS network regardless of which measurement report is received.
  • the service fallback can be performed based on the measurement report of the first measurement.
  • it can also be based on the measurement report of the second measurement, or To compare the magnitude of the signal strength in the two measurement reports, based on the measurement report with high signal strength.
  • S880 The terminal does not measure the UMTS neighboring cell whose signal strength meets the preset requirement before the expiration of the protection timer, and does not measure the cell of the UMTS adjacent frequency point whose signal strength meets the preset requirement. Then, the terminal does not report any measurement report, and the eNB does not receive the measurement report of the first measurement and the second measurement, and drops the service of the terminal to the GSM network.
  • the network side when the terminal has a traffic fallback requirement, the network side sends a cell measurement of the neighboring frequency point to the terminal in addition to the signal measurement control of the different system neighboring cell of the preferred CS wireless network. control. And the reporting of the two measurements can be used as the basis for the network CS to determine the target CS wireless network where the terminal service falls.
  • the terminal can know the cell measurement through the adjacent frequency point, and notify The network side, so that the network side drops the service of the terminal to the preferred CS wireless network to improve the user experience.
  • the network side can also use the second measurement measurement report reported by the terminal to automatically identify and add the neighboring cell to the terminal during the service fallback process.
  • FIG. 9 is a schematic diagram of a service fallback device according to an embodiment of the present application.
  • the apparatus 900 is configured to drop the service of the terminal from the PS wireless network to the CS wireless network, where the CS wireless network includes a first CS wireless network and a second CS wireless network, and the first CS wireless network is a preferred CS wireless network, for example The UMTS network, the second CS wireless network is a candidate CS wireless network, such as a GSM network.
  • the apparatus 900 is applied to a RAN device in a PS wireless network, and includes a transmitting unit 910, a determining unit 920, and a fallback unit 930.
  • the sending unit is configured to send, by the terminal, the first measurement control information and the second measurement control information to the terminal, where the terminal performs the first measurement and the second measurement on the first CS wireless network, respectively.
  • the first measurement is a signal measurement of an adjacent system neighboring cell
  • the second measurement is a cell measurement of an adjacent frequency point.
  • a determining unit configured to determine a target CS wireless network according to the reporting situation of the terminal to the one of the first measurement and the second measurement, where the target CS wireless network is a first CS wireless network or a second CS wireless network;
  • a fallback unit configured to drop the service of the terminal into the target CS wireless network.
  • first measurement control information and the second measurement control information and the measurement and reporting forms and the reported content of the first measurement and the second measurement are the same as the above method embodiments, and are not described herein again.
  • determination of the target CS wireless network by the determining unit 920 is the same as the above method embodiment, and details are not described herein again.
  • FIG. 10 is a schematic diagram of another service fallback device according to an embodiment of the present application.
  • the device further includes a neighboring cell management unit 940 compared to the device shown in FIG. 9 .
  • the neighboring area management unit 940 is configured to determine whether the cell in the second measured measurement report is a neighboring cell of the serving cell of the terminal, and when the cell in the measurement report is not a neighboring cell of the serving cell of the terminal, add the cell as The neighboring cell of the serving cell of the terminal.
  • FIG. 11 is a schematic diagram of another service fallback device provided by the embodiment of the present application.
  • the device further includes a trigger unit 950 compared to the device shown in FIG. 9 .
  • the determining unit has a service fallback requirement, and the trigger sending unit 910 sends the first measurement control information and the second measurement control information.
  • the triggering unit 950 may trigger the sending unit 910 to send the first measurement control information and the second measurement control information when receiving the fallback indication sent by the core network device, or may send the terminal to notify the network side to send the terminal.
  • the trigger sending unit 910 sends the first measurement control information and the second measurement control information when there is a request message of the CS service demand. For details, reference may be made to FIG. 1 and details will not be repeated.
  • each of the above units may be a separately set processor, or may be implemented in one processor of the RAN device, or may be stored in the memory of the RAN device in the form of program code, by the RAN device.
  • One of the processors calls and executes the functions of each of the above units.
  • the individual units can be integrated or implemented independently.
  • the processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated systems configured to implement the embodiments of the present application. Circuit.
  • the above sending unit 910 The information can be sent to the terminal through the radio device of the RAN device.
  • FIG. 12 is a schematic structural diagram of a RAN device according to an embodiment of the present application.
  • the RAN device 1200 includes a processor 1210, a memory 1220, a first interface 1230, and a second interface 1240.
  • the memory 1220, the first interface 1230, and the second interface 1240 are all connected to the processor 1210, and the first interface 1230 is used to communicate with the CN device, the second interface 1240 is used to communicate with the terminal, and the memory 1220 is used to store the program. .
  • the processor 1210 calls the program stored in the memory 1220 to perform the method of any one of the above method embodiments, for example, performing the following operations:
  • the first measurement control information and the second measurement control information are sent to the terminal through the second interface 1240, where the terminal is used to instruct the terminal to perform the first measurement and the second measurement on the first CS wireless network, where
  • the first measurement is a signal measurement of the adjacent system neighboring cell
  • the second measurement is a cell measurement of the adjacent frequency point
  • a target CS wireless network Determining, by the terminal, a target CS wireless network, where the target CS wireless network is a first CS wireless network or a second CS wireless network, according to one or all of the first measurement and the second measurement;
  • the service of the terminal is dropped back to the target CS wireless network.
  • first measurement control information and the second measurement control information and the measurement and reporting forms and the reported content of the first measurement and the second measurement are the same as the above method embodiments, and are not described herein again.
  • determination of the target CS wireless network is the same as the above method embodiment, and details are not described herein again.
  • the memory 1220 can also store the neighbor managed program so that the processor 1210 can invoke and perform the following operations:
  • processor 1210 herein may be a processor or a collective name of multiple processing elements.
  • the processor may be a CPU or an ASIC, or may be configured to implement the embodiment of the present application.
  • One or more integrated circuits such as one or more digital singular processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
  • DSPs digital singular processors
  • FPGAs Field Programmable Gate Arrays
  • the memory 1220 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program code or parameters, data, and the like required for the RAN device to operate. And the memory 1220 may include a random access memory (RAM), and may also include a non-volatile memory such as a magnetic disk memory, a flash memory, or the like.
  • RAM random access memory
  • the first interface 1230 is configured to communicate with the CN device, and may be a wired interface or a wireless interface, for example, may be a fiber interface to connect the optical fiber connected to the CN device. This is by way of example only, any interface that can communicate with the CN device can be used.
  • the second interface 1240 is configured to communicate with the terminal. When the processor 1210 is located on the baseband component, the second interface 1240 can be connected to the radio frequency component and communicate with the terminal through the radio frequency component.
  • the second interface 1240 can be a Common Public Radio Interface (CPRI).
  • CPRI Common Public Radio Interface
  • FIG. 13 is a schematic diagram of a service fallback device according to an embodiment of the present disclosure.
  • the device 1300 is applied to a terminal, and the service for the terminal is dropped from the PS wireless network to the CS wireless network, where CS
  • the wireless network includes a first CS wireless network and a second CS wireless network.
  • the first CS wireless network is a preferred CS wireless network, such as a UMTS network
  • the second CS wireless network is a candidate CS wireless network, such as a GSM network.
  • the apparatus 1300 includes a receiving unit 1301, a measuring unit 1302, a measurement result processing unit 1303, and a CS service processing unit 1304.
  • the receiving unit 1301 is configured to receive the first measurement control information and the second measurement control information that are sent by the RAN device in the PS wireless network, where the first measurement control information and the second measurement control information are used to indicate the terminal to the first CS, respectively.
  • the wireless network performs the first measurement and the second measurement, wherein the first measurement is a signal measurement of the adjacent system neighboring cell, and the second measurement is a cell measurement of the adjacent frequency point.
  • the measuring unit 1302 is configured to respectively according to the first measurement control information and the second measurement The quantity control information is used to perform the first measurement and the second measurement.
  • the measurement result processing unit 1303 is configured to determine whether to report the measurement report of the first measurement according to the measurement result of the first measurement and the measurement result of the second measurement, and whether to report the second measurement a measured measurement report, wherein one or all of the first measurement and the second measurement are used to determine a target CS wireless network in which the terminal's traffic falls back, wherein the target CS wireless network is the first CS wireless network or the second CS wireless The internet.
  • the CS service processing unit 1304 is configured to perform CS services on the target CS wireless network.
  • the measurement result processing unit 1303 is used as the measurement unit When the measured signal strength of the neighboring area meets the first preset requirement, the measurement report of the first measurement is reported, where the measurement report of the first measurement includes the identifier of the neighboring area whose signal strength meets the first preset requirement, or The signal strength satisfies the identifier of the neighboring area of the first preset requirement and the signal strength of the neighboring area.
  • the measuring unit 1302 performs periodic measurement on the second measurement, and the measurement result processing unit 1303 can perform periodic reporting according to the measurement result.
  • the measurement report of the second measurement includes: the identifier of the cell with the strongest signal strength and the signal strength of the cell; the identifier of the cell whose signal strength meets the second preset requirement, or the cell whose signal strength meets the second preset requirement The identity of the cell and the signal strength of the cell; or the measured identity and signal strength of all cells of the neighboring frequency point.
  • the method for the first CS wireless network or the second CS wireless network is the same as the foregoing method embodiment, for example, when the measurement result processing unit 1303 reports the measurement report of the first measurement within a preset time, and the measurement report includes When the signal strength meets the neighboring area of the first preset requirement, the target CS wireless network is the first CS wireless network; or, when the measurement result processing unit 1303 reports the measurement report of the second measurement within the preset time, and the measurement report includes the signal When the strength meets the second preset requirement, the target CS wireless network is the first CS wireless network; or, when the measurement result processing unit 1303 does not report the first measured measurement report and the second measured measurement report within the preset time When the target CS wireless network is the second CS wireless network; or, when the measurement result The processing unit 1303 reports one or all of the first measured measurement report and the second measured measurement report within a preset time, and the first measured measurement report does not include the neighboring area that satisfies the first preset requirement, and the second measurement When the measurement report
  • FIG. 14 is a schematic diagram of another service falling device provided by the embodiment of the present application.
  • the apparatus shown in FIG. 13 further includes a sending unit 1305, configured to receive the first measurement control information and the first Before measuring the control information, the RAN device sends a request message, where the request message is used to notify the network side that the terminal has a CS service requirement.
  • the CN device on the network side can send the indication information to the RAN device according to the request message, to instruct the RAN device to drop the terminal back into the CS wireless network, so that the RAN device can send the first measurement control information to the terminal based on the indication information.
  • the RAN device may also send the first measurement control information and the second measurement control information to the terminal when receiving the request message sent by the terminal.
  • each of the above units may be a separately set processor, or may be implemented in one processor of the terminal, or may be stored in the memory of the terminal in the form of program code, by one of the terminals.
  • the processor calls and executes the functions of each of the above units.
  • the individual units can be integrated or implemented independently.
  • the processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated systems configured to implement the embodiments of the present application. Circuit.
  • the above receiving unit 1301 and the transmitting unit 1303 may receive information from the RAN device through the transceiver of the terminal, and transmit the information to the RAN device.
  • FIG. 15 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the terminal 1500 includes a processor 1501, a memory 1502, and an interface 1503.
  • the memory 1502 and the interface 1503 are both connected to the processor 1501, and the interface 1503 is used to communicate with the RAN device, and the memory 1502 is used to store the program.
  • the processor 1501 calls a program stored in the memory 1502 to execute the above method embodiment. Any method performed by the terminal to process a terminal that is performing a voice service, for example, performing the following operations:
  • the wireless network performs the first measurement and the second measurement, where the first measurement is a signal measurement of the adjacent system neighboring cell, and the second measurement is a cell measurement of the adjacent frequency point;
  • a target CS wireless network for determining a service fallback of the terminal, wherein the target CS wireless network is a first CS wireless network or a second CS wireless network;
  • the CS service is performed on the target CS wireless network.
  • the processor 1501 is used to measure the neighbors When the signal strength of the area meets the first preset requirement, the measurement report of the first measurement is reported, where the measurement report of the first measurement includes the identifier of the neighboring area whose signal strength meets the first preset requirement, or the signal strength satisfies the first The identifier of the neighboring area required by the preset and the signal strength of the neighboring area.
  • the processor 1501 performs periodic measurement and reporting on the second measurement.
  • the measurement report of the second measurement includes: the identifier of the cell with the strongest signal strength and the signal strength of the cell; the identifier of the cell whose signal strength meets the second preset requirement, or the cell whose signal strength meets the second preset requirement The identity of the cell and the signal strength of the cell; or the measured identity and signal strength of all cells of the neighboring frequency point.
  • the description of the method for the first CS wireless network or the second CS wireless network is the same as the above method embodiment, for example, when the processor 1501 reports the measurement report of the first measurement within a preset time, and the measurement report includes the signal strength.
  • Target CS when meeting the first preset requirement The wireless network is the first CS wireless network; or, when the processor 1501 reports the measurement report of the second measurement within a preset time, and the measurement report includes the cell whose signal strength meets the second preset requirement, the target CS wireless network is the first a CS wireless network; or, when the processor 1501 does not report the first measured measurement report and the second measured measurement report within a preset time, the target CS wireless network is the second CS wireless network; or, when the processor 1501 And reporting one or all of the first measurement measurement report and the second measurement measurement report in a preset time, and the first measurement measurement report does not include the neighboring area that meets the first preset requirement, and the second measurement measurement report When the cell that meets the second preset requirement is not included, the
  • the processor 1501 is further configured to send, by using the interface 1503, a request message to the RAN device, where the request message is used to notify the network side that the terminal has a CS service requirement, so that the network side sends the first measurement control information and the second measurement control information.
  • the CN device on the network side may send the indication information to the RAN device according to the request message, to instruct the RAN device to drop the terminal back into the CS wireless network, so that the RAN device may send the first measurement control information to the terminal according to the indication information.
  • Second measurement control information may also send the first measurement control information and the second measurement control information to the terminal when receiving the request message sent by the terminal.
  • processor 1501 herein may be a processor or a collective name of multiple processing elements.
  • the processor may be a CPU or an ASIC, or may be configured to implement the embodiment of the present application.
  • One or more integrated circuits such as one or more digital singular processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
  • DSPs digital singular processors
  • FPGAs Field Programmable Gate Arrays
  • the memory 1502 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program code or parameters, data, and the like required for the terminal to operate.
  • the memory 102 may include random access memory (RAM), and may also include non-volatile memory such as a magnetic disk memory, a flash memory, or the like.
  • the interface 1503 is configured to communicate with the RAN device, for example, through the interface 1503 to connect to the antenna of the terminal to transmit information to the RAN device through the antenna.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • connection may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media.

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Abstract

本申请提供一种业务回落方法、装置、以及通信系统。在该方法中，RAN设备在终端有业务回落需求希望优先将终端的业务回落到第一CS无线网络中时，除了向终端下发对第一CS无线网络的异系统邻区的信号测量控制外，还向终端下发对第一CS无线网络的邻频点的小区测量控制。且这两种测量的上报情况均可以作为RAN设备确定终端业务回落的目标CS无线网络的依据。如此，即使第一CS无线网络在单频点邻区的数量超规格的场景下，只要邻频点有小区能为终端提供CS服务，终端便可以将通过邻频点的小区测量得知，并通知RAN设备，以便RAN设备将终端的业务回落到第一CS无线网络中，以提高用户体验。

Description

业务回落方法、装置、以及通信系统 技术领域
本申请涉及无线通信技术领域，尤其涉及业务回落方法、装置、以及通信系统。
背景技术
随着通信技术的发展，无线网络不仅提供语音业务，还提供丰富多彩的数据业务。对于语音业务，在传统的2G和3G网络中，例如GSM/EDGE无线接入网(GSM/EDGE Radio Access Network，GERAN)，其中GSM为全球移动通信系统(Global System for Mobile communication)，EDGE为增强型数据速率GSM演进(Enhanced Data rates for GSM Evolution)，以及全球地面无线接入网(Universal Terrestrial Radio Access Network，UTRAN)中，语音业务的传输形式为电路交换(Circuited Switched，CS)；在演进的网络中，例如长期演进(Long Time Evolution，LTE)网络中，所有业务，包括语音业务，的传输形式为分组交换(Packet Switching，PS)。
目前，2G/3G网络部署成熟，而4G网络还处于部署的初期，语音业务往往需要回落到2G/3G网络中，以保证4G网络下的语音通信质量，同时还可以重用传统2G/3G网络的资源，保护投资。在业务回落的过程中，为了保证用户体验，优先让业务回落到3G网络中。然而，目前的回落技术会出现3G网络可以提供服务时，业务却回落到2G网络的场景，使得用户体检受到影响。
发明内容
有鉴于此，本申请实施例提供一种业务回落方法、装置、以及通信系 统，以优先将业务回落到预期网络中，保证用户体验。
第一方面，本申请提供一种业务回落方法，用于将终端的业务从PS无线网络回落到CS无线网络中，该CS无线网络包括第一CS无线网络和第二CS无线网络，该方法由PS无线网络中的RAN设备执行，包括：
RAN设备在终端有业务回落需求时，向终端发送第一测量控制信息和第二测量控制信息，分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
RAN设备根据终端对第一测量和第二测量之一或全部的上报情况，确定目标CS无线网络，其中，目标CS无线网络为第一CS无线网络或第二CS无线网络；
RAN设备将终端的业务回落到目标CS无线网络中。
第二方面，本申请提供一种业务回落方法，用于终端的业务从PS无线网络回落到CS无线网络的过程中，该CS无线网络包括第一CS无线网络和第二CS无线网络，该方法包括：
终端接收PS无线网络中的RAN设备发送的第一测量控制信息和第二测量控制信息，其中第一测量控制信息和第二测量控制信息分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
终端分别根据第一测量控制信息和第二测量控制信息，进行第一测量和第二测量；
终端根据第一测量的测量结果和第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中第一测量和第二测量之一或全部的上报情况用于确定终端的业务回落的目标CS无线网络，其中目标CS无线网络为第一CS无线网络或第二CS无线网络；
终端在目标CS无线网络进行CS业务。
第三方面，本申请提供一种业务回落装置，用于将终端的业务从PS无线网络回落到CS无线网络中，该CS无线网络包括第一CS无线网络和第二CS无线网络，该装置应用于PS无线网络中的RAN设备，且包括：
发送单元，用于在终端有业务回落需求时，向终端发送第一测量控制信息和第二测量控制信息，分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
确定单元，用于根据终端对第一测量和第二测量之一或全部的上报情况，确定目标CS无线网络，目标CS无线网络为第一CS无线网络或第二CS无线网络；
回落单元，用于将终端的业务回落到目标CS无线网络中。
第四方面，本申请提供一种RAN设备，包括处理器和存储器，存储器用于存储程序，处理器调用存储器存储的程序，以执行本申请第一方面种提供的方法。
第五方面，本申请提供一种业务回落装置，用于终端的业务从PS无线网络回落到CS无线网络的过程中，该CS无线网络包括第一CS无线网络和第二CS无线网络，该装置应用于终端，且包括：
接收单元，用于接收PS无线网络中的RAN设备发送的第一测量控制信息和第二测量控制信息，其中第一测量控制信息和第二测量控制信息分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
测量单元，用于分别根据第一测量控制信息和第二测量控制信息，进行第一测量和第二测量；
测量结果处理单元，用于根据第一测量的测量结果和第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中第一测量和第二测量之一或全部的上报情况用于确定终端的业 务回落的目标CS无线网络，其中该目标CS无线网络为第一CS无线网络或第二CS无线网络；
CS业务处理单元，用于在目标CS无线网络进行CS业务。
第六方面，本申请提供一种终端，包括处理器和存储器，存储器用于存储程序，处理器调用存储器存储的程序，以执行本申请第二方面种提供的方法。
第七方面，本申请还提供一种通信系统，包括PS无线网络，第一CS无线网络、第二CS无线网络，其中第一PS无线网络还包括RAN设备，该RAN设备包括第三方面的装置，或该RAN设备如第四方面所述。
可见，在以上各个方面，RAN设备在终端有业务回落需求时，希望优先将终端的业务回落到哪个CS无线网络(例如，第一CS无线网络)，就向终端下发对该CS无线网络的异系统邻区的信号测量控制和邻频点的小区测量控制。且这两种测量的上报情况均可以作为RAN设备确定终端业务回落的目标CS无线网络的依据。如此，即使该CS无线网络在单频点邻区的数量超规格的场景下，只要邻频点有小区能为终端提供CS服务，终端便可以将通过邻频点的小区测量得知，并通知RAN设备，以便RAN设备将终端的业务回落到该CS无线网络中，以提高用户体验。
在以上各个方面中，第一CS无线网络为优选CS无线网络，例如UMTS网络，第二CS无线网络为候选CS无线网络，例如GSM网络。PS无线网络例如为LTE网络。回落的业务为语音业务，如此可以将需要进行语音业务的终端优先回落到UMTS网络中，以提高用户体验。
在以上各个方面中，终端在有CS业务需求时，即有业务回落需求时，可以向RAN设备发送请求消息，该请求消息用于通知网络侧该终端有CS业务需求。RAN设备将该请求消息发送给CN设备，以告知CN设备该终端有CS业务需求，CN设备在获知终端有CS业务需求时，向RAN设备发送回落指示，以指示RAN设备将终端的业务回落到CS无线网络中。如此， RAN设备可以在接收到该回落指示时，确定终端有业务回落需求，从而向终端发送第一测量控制信息和第二测量控制信息。或者，RAN设备也可以在接收到终端发送的请求消息之后，就向终端发送第一测量控制信息和第二测量控制信息。例如，以上第三方面的装置还包括触发单元，用于在接收到回落指示或请求消息时，触发第一测量控制信息和第二测量控制信息的发送。且以上第五方面的装置包括发送单元，用于发送该请求消息。
在以上各方面中，第一测量控制信息包括异系统邻区的小区标识；所述第二测量控制信息包括邻频点的信息。
在以上各个方面中，第一测量的上报为事件触发上报，终端在测量到的邻区的信号强度满足第一预设要求时，上报第一测量的测量报告；其中第一预设要求可以通过信号强度阈值来体现，例如终端测量到的邻区的信号强度达到或超过信号强度阈值时，上报第一测量的测量报告。如此，终端可以在邻区中有可以提供服务的小区时，才上报测量报告，如此，可以节约空口资源。且RAN设备也可以直接利用该测量报告进行业务回落，减少RAN设备处理的复杂度。
在以上各个方面中，第一测量的测量报告可以包括信号强度满足第一预设要求的邻区的标识，除此之外，还可以包括该邻区的信号强度。如此，在通过切换进行回落的过程中，RAN设备可以将终端切换到测量报告中的标识所标识的邻区中。
在以上各个方面中，第二测量为周期测量。如此，可以减少测量的测试，节约能源。且较佳的，优先以第一测量的上报情况作为业务回落的判断依据，当第一测量的测量报告未接收到时，再以第二测量的上报情况作为业务回落的判断依据。
第二测量的测量报告包括：信号强度最强的小区的标识和该小区的信号强度；信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，测量到的该邻频 点的所有小区的标识及信号强度。该第二预设要求可以与第一预设要求相同，也可以不同。此外，也可以通过信号强度阈值来体现。如果以第二预设要求来限定终端对第二测量的上报，可以节约空口资源。且RAN设备也可以直接利用该测量报告进行业务回落，减少RAN设备处理的复杂度。
在以上各个方面中，目标CS无线网络是第一CS无线网络还是第二CS无线网络，可以包括如下情况：
当RAN设备在预设时间内接收到第一测量的测量报告，且该测量报告包括信号强度满足第一预设要求的邻区时，即终端在预设时间内上报第一测量的测量报告，且该测量报告包括信号强度满足第一预设要求的邻区时，确定目标CS无线网络为第一CS无线网络；或者，
当RAN设备在预设时间内接收到第二测量的测量报告，且该测量报告包括信号强度满足第二预设要求的小区时，即终端在预设时间内接收到第二测量的测量报告，且该测量报告包括信号强度满足第二预设要求的小区时，确定目标CS无线网络为第一CS无线网络；或者，
当RAN设备在预设时间内未接收第一测量的测量报告和第二测量的测量报告时，即终端在预设时间内未接收第一测量的测量报告和第二测量的测量报告时，确定目标CS无线网络为第二CS无线网络；或者，
当RAN设备在预设时间内接收到第一测量的测量报告和第二测量的测量报告之一或全部，第一测量的测量报告中不包括满足第一预设要求的邻区，第二测量的测量报告中不包括满足第二预设要求的小区时，即终端在预设时间内接收到第一测量的测量报告和第二测量的测量报告之一或全部，第一测量的测量报告中不包括满足第一预设要求的邻区，第二测量的测量报告中不包括满足第二预设要求的小区时，确定目标CS无线网络为第二CS无线网络。
在以上各个方面中，RAN设备还可以在接收到第二测量的测量报告时，确定该测量报告中的小区是否为终端的服务小区的邻区；当测量报告中的 小区不是该终端的服务小区的邻区时，将该小区添加为该终端的服务小区的邻区。例如，以上第三方面的装置包括邻区管理单元用于执行该邻区添加操作；以上第四方面的处理器用于执行该邻区添加操作。如此，可以在业务回落的过程中，同时完成自动邻区添加，提高邻区规划的运维效率。
附图说明
图1为本申请实施例提供的一种通信系统的示意图；
图2为一种当前业务回落方法的示意图；
图3为本申请实施例提供的一种LTE覆盖区域的邻区规格示意图；
图4为本申请实施例提供的一种业务回落方法的流程图；
图5为本申请实施例提供的另一种业务回落方法的流程图；
图6为本申请实施例提供的又一种业务回落方法的流程图；
图7为本申请实施例提供的又一种业务回落方法的流程图；
图8为本申请实施例提供的一种业务回落方法的示意图；
图9为本申请实施例提供的一种业务回落装置的示意图；
图10为本申请实施例提供的另一种业务回落装置的示意图；
图11为本申请实施例提供的又一种业务回落装置的示意图；
图12为本申请实施例提供的一种RAN设备的示意图；
图13为本申请实施例提供的一种业务回落装置的示意图；
图14为本申请实施例提供的另一种业务回落装置的示意图；
图15为本申请实施例提供的一种终端的示意图。
具体实施方式
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1)、终端，又称之为用户设备(User Equipment，UE)，是一种向用户 提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备、连接到无线调制解调器的其他处理设备等。
2)、RAN设备是一种将终端接入到无线网络的设备，包括但不限于：演进型节点B(evolved Node B，eNB)，无线网络子系统(Radio Network Subsystem，RNS)中的无线网络控制器(Radio Network Controller，RNC)、节点B(Node B，NB)，基站子系统(Base Station Subsystem，BSS)中的基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station,BTS)，家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)，基带单元(BaseBand Unit，BBU)，Wifi接入点(Access Point，AP)等。
3)、PS无线网络是指所有业务都以分组交换的形式传输的无线网络，例如LTE网络；CS无线网络是指具有电路交换的传输形式的无线网络，其也可以有也可以没有分组交换的传输形式，例如UMTS网络，GSM网络。
4)、“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图，描述本申请的实施例，所描述的实施例是本申请一部分实施例，而不是全部实施例。基于本申请的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其它实施例，都属于本申请保护的范围。
请参考图1，其为本申请实施例提供的一种通信系统的示意图。如图1所示，该通信系统包括2G/3G网络中的RAN设备110和核心网(Core Network，CN)设备120，以及4G网络中的RAN设备130和CN设备140。其中，2G/3G网络中的RAN设备110例如为GERAN/UTRAN设备，例如BSS/RNS；2G/3G网络中的CN设备120例如为移动交换中心(Mobile  Switching Center，MSC)。4G网络的RAN设备130例如为演进型UTRAN(Evolved UTRAN)设备，例如eNB；4G网络的CN设备140例如为MME。MSC120和MME140之间通过SGs接口连接，以实现2G/3G网络和4G网络之间的信息交互。
在该系统中，当终端150发起语音业务或者有被叫语音业务时，利用电路交换回落(Circuit Switched Fallback，CSFB)技术将终端150回落到CS无线网络中进行语音业务，即由4G网络回落到2G/3G网络中，然后在2G/3G网络进行语音业务。如图1所示，该CSFB过程，主要包括如下步骤：
S110：处于4G网络下的终端150有CS业务需求时，通知MME140。
例如，终端150可以通过向MME发送扩展业务请求(extended service request)消息通知MME 140其有CS业务需求。
S120：MME140接收到终端150的通知之后，指示eNB130进行回落。
例如，MME140可以通过向eNB130发送CS回落指示(CS fallback indicator)信令来指示eNB130将终端回落到2G/3G网络中。
S130：eNB130触发终端150回落。
具体eNB130可以通过切换或重定向将终端150回落到2G/3G网络中。
S140：终端150回落到2G/3G网络后，在2G/3G网络进行语音业务。
在以上回落过程中，为了保证用户体验，优先让业务回落到3G网络中。在无3G网络覆盖或者3G网络无法提供服务时，才将业务回落到2G网络中。目前，为了让业务优先回落到3G网络中，利用异系统邻区的信号测量来确定3G网络是否可以提供服务，且在3G网络可以服务的情况下，让业务回落到3G网络中，在3G网络不可以提供服务的情况下，才让业务回落到2G网络中。请参考图2，其为一种当前业务回落方法的示意图。在该方法中，通过异系统邻区的信号测量在发现信号质量良好的异系统邻区时，优先让终端回落到通过测量得到的异系统邻区中。如图2所示，在LTE网 络中，eNB向终端下发测量控制信息(S210)，指示终端对UMTS邻区的信号进行测量。终端对该测量控制信息指定的UMTS邻区进行测量(S220)，当终端测量到某UMTS邻区的信号质量满足要求，例如达到或超过预设阈值时，终端向eNB上报测量报告(S230)。eNB便可以根据该测量报告获知UMTS邻区的信号质量良好，从而可以控制终端回落到UMTS(S240)。当终端未测量到信号质量满足要求的UMTS邻区时，终端不向eNB上报测量报告。若eNB在预设时间内(该时间可以通过保护定时器控制)未收到终端上报的测量报告，则认为UMTS无法提供良好的服务，因此控制终端回落到GSM(S250)。
目前，在下发异系统邻区的信号测量控制时，单频点最多携带32个待测量的异系统邻区。例如，在LTE网络中，eNB下发UMTS邻区的信号测量控制时，单频点最多携带32个UMTS邻区，即以上步骤S210中下发的测量控制信息，单频点最多携带32个待测量的UMTS邻区。然而，LTE低频段正在逐步大量上市，低频段相对于高频段拥有更为广泛的覆盖，因此容易出现LTE单频点超过32个UMTS邻区的现象。此场景下会出现部分区域有UMTS覆盖，但却由于LTE测量控制规格限制，未在测量控制中下发，从而导致终端无法回落到UMTS，而回落到GSM的问题，影响用户感受。
请参考图3，其为本申请实施例提供的一种LTE覆盖区域的邻区规格示意图。如图3所示，LTE覆盖区域310具有超过32个UMTS邻区，以UMTS 1……UMTS 33……标识，以及n个GMS邻区，以GSM 1……GSM n标识，其中n为小于或等于32的正整数。终端300在LTE覆盖区域310发起语音呼叫(该终端也可以作为被叫，在此以主叫为例)，此时，终端300处于第“33”个UMTS邻区覆盖区域内。eNB为了优先将终端300回落到UMTS网络中，向终端下发UMTS邻区的信号测量控制，根据协议规定，其只能下发32个UMTS邻区的信号测量控制。因此，虽然配置了第“33” 个UMTS邻区却无法下发，故终端300无法对其进行测量，如此在CSFB保护定时器超时后，终端300被回落到GSM网络中。可见，终端在有UMTS覆盖的情况下，仍然回落到了GSM网络中，无法获得更好的用户体验。
本申请考虑到以上问题，在符合协议的前提下，提出一种业务回落方案，在有UMTS覆盖的区域，即使在单频点邻区的数量超规格的场景下，也能保证终端优先回落到UMTS网络，从而提升用户体验。在该方案中，网络侧在终端有业务回落需求时，除了向终端下发异系统邻区的信号测量控制以外，还向终端下发邻频点的小区测量控制，且这两种测量的测量报告均可以作为确定回落到哪个CS无线网络的依据，这样即使在网络侧没有收到异系统邻区的信号测量的测量报告时，只要UMTS有信号质量良好的小区，便可以通过邻频点的小区测量来触发终端的业务回落到UMTS网络。且只有当两个测量都显示UMTS不适于作为业务回落的目标网络时，才将终端的业务回落到GSM网络中。
可见，利用以上方案可以在单频点邻区的数量超规格的场景下，也能保证终端优先回落到UMTS网络，从而提升用户体验。该方案不仅适用于LTE与UMTS/GSM之间的业务回落过程，也同样适用于其它PS无线网络与CS无线网络之间的业务回落过程。
下面结合附图进行描述。
请参考图4，其为本申请实施例提供的一种业务回落方法的流程图。该方法用于将PS无线网络中的终端的业务从该PS无线网络回落到CS无线网络中，其中CS无线网络包括第一CS无线网络和第二CS无线网络，且第一CS无线网络为优选CS无线网络，例如UMTS网络，第二CS无线网络为候选CS无线网络，例如GSM网络。如图4所示，该方法包括如下步骤：
S410：PS无线网络中的RAN设备在终端有业务回落需求时，向终端发送第一测量控制信息和第二测量控制信息，分别用于指示终端对第一CS 无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量。
其中，异系统邻区的信号测量是指对第一测量控制信息中指定的小区的信号进行测量的过程。邻频点的小区测量是指对第一测量控制信息中指定的频点的小区进行测量的过程。
S420：RAN设备根据终端对第一测量和/或第二测量的上报情况，确定目标CS无线网络，该目标CS无线网络为第一CS无线网络或第二CS无线网络。
S430：RAN设备将终端的业务回落到目标CS无线网络中。
请参考图1，在以上步骤S410中，RAN设备可以在接收到核心网设备发送的回落指示时，确定终端有业务回落需求；也可以在接收终端发送用于通知网络侧该终端有电路交换业务需求的请求消息时，确定终端有业务回落需求。当然，本申请不以此为限，任何终端有CS业务需求，需要回落的场景，都可以利用该场景下的新增信元或已有信元作为触发RAN设备发送第一测量控制信息和第二测量控制信息的方式。
另外，在以上步骤S410中，第一测量控制信息包括异系统邻区的小区标识，例如物理小区标识(Physical Cell Identifier，PCI)，以便终端对这些小区标识所标识的小区进行测量。且根据协议要求，该第一测量控制信息最多携带32个异系统邻区的小区标识。此外，可以对终端第一测量的测量报告的上报形式进行配置，较佳的，配置为事件触发上报，即当终端测量到邻区的信号强度满足预设要求时，例如达到或超过预设阈值时，上报测量报告，且在测量报告中可以将信号强度满足预设要求的邻区报告给RAN设备，也可以将邻区和该邻区的信号强度同时报告给RAN设备。例如，该第一测量控制信息可以为B1事件测量控制信息，则终端执行的第一测量为B1事件测量。当然，该第一测量控制信息还可以是B2事件测量控制信息，则终端执行的第一测量为B2事件测量。对终端测量报告的上报形式的配置 可以由RAN设备通过第一测量控制信息实现，也可以预先配置在终端，在此不作限制。当然，也可以将终端测量报告的上报形式配置为其它上报方式，例如，周期上报，该上报形式相对于以上事件触发的上报形式，需要周期上报邻区的信号强度，需要更多的空口资源，也就是说配置为事件触发上报的形式可以仅上报信号强度满足预设要求的邻区，节约空口资源，且基站也可以直接使用测量报告的结果，减少RAN设备对结果运用的复杂度。
第二测量控制信息可以包括邻频点的信息，以便终端对该邻频点的小区进行测量。该第二测量较佳的为周期测量。另外，也可以对终端第二测量的测量报告的上报形式进行配置，此时，即可以配置为周期上报，也可以配置为事件触发上报。在周期上报中，终端周期测量邻频点的小区的信号强度并上报给RAN设备。如此，可以在终端执行了第一测量，且第一测量的上报形式为事件触发上报的情况下，优先采用第一测量的测量报告进行业务回落，使得业务回落预先采用异系统邻区的信号测量为依据，而邻频点的小区测量作为补充，保证业务回落的准确性，同时最大化保证业务优先回落到UMTS网络中。此外，周期上报的形式中，可以仅上报信号强度满足预设要求的小区，也可以对测量到的小区均进行上报；在仅上报信号强度满足预设要求的小区的情况下，该测量报告可以仅包括小区标识，也可以即包括小区标识又包括小区的信号强度，且RAN设备可以直接利用测量报告进行业务回落；在上报测量到的所有小区的情况下，该测量报告即包括小区标识又包括小区的信号强度，RAN设备可以根据信号强度决定是否进行业务回落；此外，也可以仅上报信号强度最强的小区以及小区的信号强度，RAN设备根据最强小区的信号强度决定是否进行业务回落，对于最强大小的个数可以预先设定，例如可以为1个，也可以为1个以上，例如3个，在预先设定上报n个(n为大于或等于1的正整数)的情况下，就是上报信号强度最强的前n个小区。需要说明的是，第一测量中对信号 强度的预设要求与第二测量中对信号强度的预设要求可以相同，也可以不同，具体根据实际需求进行设置。
在以上步骤S420中，RAN设备在接收到第一测量和第二测量中任一测量的测量报告时，可以根据该测量报告确定目标CS无线网络是否可以为第一CS无线网络，其中，只要任一测量报告中有满足预设要求的小区，即可以确定目标CS无线网络为第一CS无线网络，且只有当这两个测量报告都没有满足预设要求的小区时，才确定目标CS无线网络为第二CS无线网络；且当未接收到任何测量报告时，可以确定目标CS无线网络为第二CS无线网络。具体，该步骤S420可以包括以下任一种情况：
当RAN设备在预设时间内接收到第一测量的测量报告，且该测量报告包括信号强度满足第一预设要求的邻区时，确定目标CS无线网络为第一CS无线网络；或者，
当RAN设备在预设时间内接收到第二测量的测量报告，且该测量报告包括信号强度满足第二预设要求的小区时，确定目标CS无线网络为第一CS无线网络；或者，
当RAN设备在预设时间内未接收第一测量的测量报告和第二测量的测量报告时，确定目标CS无线网络为第二CS无线网络；或者，
当RAN设备在预设时间内接收到第一测量的测量报告和第二测量的测量报告之一或全部，且第一测量的测量报告中不包括满足第一预设要求的邻区，第二测量的测量报告中不包括满足第二预设要求的小区时，确定目标CS无线网络为第二CS无线网络。
以上对于第一测量中的邻区的信号强度是否满足第一预设要求，以及第二测量中的小区的信号强度是否满足第二预设要求可以在终端侧进行判断，而后仅上报满足要求的邻区或者小区，也可以由终端上报测量到的信号强度，由RAN设备进行判断。
在一较佳的实现方式中，以上第一测量的上报为事件触发上报，即当 终端测量到的邻区的信号强度满足预设要求时，上报测量到的邻区标识，也可以同时上报邻区的信号强度。第二测量为周期测量，且上报的测量报告可以包括：信号强度满足预设要求的小区的标识，或者，信号强度满足预设要求的小区的标识和该小区的信号强度；信号强度满足预设要求的最强小区的标识，或者，信号强度满足预设要求的最强小区的标识和该小区的信号强度。此时，以上步骤S420优先以第一测量作为业务回落的判断依据，当第一测量的测量报告未接收到时，再以第二测量作为业务回落的判断依据。此时，以上业务回落方法包括如图5所示的步骤：
S510：RAN设备在终端有业务回落需求时，向终端发送第一测量控制信息和第二测量控制信息，该步骤同以上步骤S410，在此不再赘述。
S520：RAN设备确定在预设时间内是否接收到第一测量的测量报告，当接收到时，执行步骤S530，否则执行步骤S540。
S530：RAN设备确定目标CS无线网络为第一CS无线网络。
S540：RAN设备确定是否接收到第二测量报告；当接收到时，执行步骤S530，否则执行步骤S550。
S550：RAN设备确定目标CS无线网络为第二CS无线网络。
S560：RAN设备将终端的业务回落到目标CS无线网络中。
在另一较佳的实现方式中，以上第一测量的上报为事件触发上报，即当终端测量到的邻区的信号强度满足预设要求时，上报测量到的邻区标识，也可以同时上报邻区的信号强度。第二测量为周期测量，且上报的测量报告可以包括：信号强度最强的小区的标识和该小区的信号强度；测量到的该邻频点的所有小区的标识及信号强度。此时，以上步骤S420优先以第一测量作为业务回落的判断依据，当第一测量的测量报告未接收到时，再以第二测量作为业务回落的判断依据。此时，以上业务回落方法其与图5所示的区别在于，需要对第二测量报告中的小区的信号强度是否满足预设要求进行判断，当满足预设要求时才将业务回落到第一CS无线网络中。具体 请参考图6，包括如下步骤，
S610：RAN设备在终端有业务回落需求时，向终端发送第一测量控制信息和第二测量控制信息，该步骤同以上步骤S410，在此不再赘述。
S620：RAN设备确定在预设时间内是否接收到第一测量的测量报告，当接收到时，执行步骤S630，否则执行步骤S640。
S630：RAN设备确定目标CS无线网络为第一CS无线网络。
S640：RAN设备确定是否接收到第二测量报告；当接收到时，执行步骤S650，否则执行步骤S660。
S650：RAN设备确定第二测量报告中的小区的信号强度是否满足预设要求，当满足预设要求时执行步骤S630，否则执行步骤S660
S660：RAN设备确定目标CS无线网络为第二CS无线网络。
S670：RAN设备将终端的业务回落到目标CS无线网络中。
在以上步骤S430中，RAN设备可以通过切换或重定向将终端的业务回落到目标CS无线网络中。且在切换过程中，确定目标小区，该目标小区可以为第一测量的测量报告中的异系统邻区，也可以为第二测量的测量报告中的邻频点的小区。在重定向过程中，通过将终端释放，让终端重新选择邻频点小区或异系统邻区接入。
另外，当RAN设备接收到第二测量的测量报告时，可以在测量报告中的小区为被添加为终端的服务小区的邻区的情况下，将该小区添加为该服务小区的邻区，如此，可以在业务回落的过程中，同时完成自动邻区添加，提高邻区规划的运维效率。
请参考图7，其为本申请实施例提供的一种业务回落方法的流程图。该方法用于终端的业务从PS无线网络回落到CS无线网络的过程中，所述CS无线网络包括第一CS无线网络和第二CS无线网络。如图7所示，该方法包括：
S710：终端接收PS无线网络中的RAN设备发送的第一测量控制信息 和第二测量控制信息，其中第一测量控制信息和第二测量控制信息分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
S720：终端分别根据第一测量控制信息和第二测量控制信息，进行第一测量和第二测量；
S730：终端根据第一测量的测量结果和第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中第一测量和第二测量之一或全部的上报情况用于确定终端的业务回落的目标CS无线网络，该目标CS无线网络为第一CS无线网络或第二CS无线网络；
S740：终端在目标CS无线网络进行CS业务。
关于第一测量控制信息和第二测量控制信息的描述，以及第一测量和第二测量的测量和上报形式、上报内容，同以上实施例，在此不再赘述。此外，何种情况下目标CS无线网络为第一CS无线网络，何种情况下为第二CS无线网络，同以上实施例的描述，在此也不再赘述。
下面以LTE中的业务回落到UMTS/GSM为例，详细描述以上过程，其仅为举例，并非用以现在本申请。具体请参考图8，其为本申请实施例提供的一种业务回落方法的示意图。如图8所示，包括如下步骤：
S810：终端向MME发送扩展业务请求消息，以通知MME其有CS业务需求。
具体，处于LTE网络下的终端有语音业务需求时，例如该终端发起语音呼叫，或者作为被叫时，该终端可以向MME发送扩展业务请求消息。且该消息经由eNB到达MME。
S820：MME接收到终端的扩展业务请求消息之后，知道终端有CS业务需求，因此指示eNB对终端的进行回落，具体可以通过CS回落指示指示eNB将终端回落到UMTS/GSM网络中。
S830：eNB接收到MME的指示之后，可以执行以上实施例中的发送 测量控制信息的步骤；即eNB向终端发送第一测量控制信息和第二测量控制信息。
该步骤S830可以在接收到MME的指示之后进行，也可以在以上步骤S810之后，即eNB接收到终端发送的扩展业务请求消息之后执行，本申请不做限制，在此以接收到MME指示之后进行为例。
其中，关于第一测量控制信息和第二测量控制信息的描述同以上实施例。且在此第一测量控制信息包括UMTS邻区的小区标识，第一测量为UMTS邻区的信号测量；第二测量控制信息包括UMTS邻频点的信息，第二测量为UMTS邻频点的小区测量。
S840：终端根据第一测量控制信息和第二测量控制信息分别执行第一测量和第二测量.
在此，以第一测量为事件触发上报为例，当终端测量到第一测量控制信息指定的UMTS的邻区的信号强度满足预设要求，即大于或等于预设阈值时，终端上报第一测量的测量报告(S850)；否则，不上报测量报告。
以第二测量为周期测量为例，当终端周期测量到邻频点的小区时，可以周期上报该邻频点的小区的标识及信号强度的测量报告，也可以只上报信号强度满足预设要求的邻频点的小区的标识的测量报告(S860)。当测量不到邻频点的小区时，则不进行上报。在此，以仅上报信号强度满足预设要求的邻频点的小区的标识为例。另一种情况可以参见图6所示的实施例。
S870：eNB接收到第一测量和第二测量的任一测量的测量报告时，将终端的业务回落到UMTS网络中。
也就是说，以上步骤S850和S860可能都执行了，也可能只执行了一个，即终端可能两个测量的测量报告都上报了，也可能只上报了一个。eNB无论接收到哪个测量报告，都可以将终端的业务回落到UMTS网络中。此外，当两个测量报告都接收到时，较佳的，可以以第一测量的测量报告为依据进行业务回落。当然，也可以以第二测量的测量报告为依据，或者可 以比较两个测量报告中信号强度的大小，以信号强度大的测量报告为依据。
S880：终端在预设时间，即保护定时器到期前，既测量不到信号强度满足预设要求的UMTS邻区，也测量不到信号强度满足预设要求的UMTS邻频点的小区。则终端不上报任何测量报告，eNB未接收到第一测量和第二测量的测量报告，将终端的业务回落到GSM网络中。
可见，在以上实施例中，网络侧在终端有业务回落需求时，除了向终端下发对优选CS无线网络的异系统邻区的信号测量控制外，还向终端下发邻频点的小区测量控制。且这两种测量的上报情况均可以作为网络侧确定终端业务回落的目标CS无线网络的依据。如此，即使优选CS无线网络在单频点邻区的数量超规格的场景下，只要邻频点有小区能为终端提供CS服务，终端便可以将通过邻频点的小区测量得知，并通知网络侧，以便网络侧将终端的业务回落到优选CS无线网络，以提高用户体验。
此外，网络侧还可以在业务回落的过程中，利用终端上报的第二测量的测量报告，为终端自动识别和添加邻区。
下面结合附图，描述以上方法在装置中的实现。参考图9，其为本申请实施例提供的一种业务回落装置的示意图。该装置900用于将终端的业务从PS无线网络回落到CS无线网络中，其中CS无线网络包括第一CS无线网络和第二CS无线网络，且第一CS无线网络为优选CS无线网络，例如UMTS网络，第二CS无线网络为候选CS无线网络，例如GSM网络。装置900应用于PS无线网络中的RAN设备，且包括发送单元910，确定单元920，和回落单元930。
其中，发送单元，用于在终端有业务回落需求时，向终端发送第一测量控制信息和第二测量控制信息，分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量。确定单元，用于根据终端对第一测量和第二测量之一或全部的上报情况，确定目标CS无线网络，该目标CS无线网络为 第一CS无线网络或第二CS无线网络；回落单元，用于将终端的业务回落到目标CS无线网络中。
关于第一测量控制信息和第二测量控制信息的描述，以及第一测量和第二测量的测量和上报形式、上报内容，同以上方法实施例，在此不再赘述。此外，确定单元920对于目标CS无线网络的确定情况同以上方法实施例，在此也不再赘述。
请继续参考图10，其为本申请实施例提供的另一种业务回落装置的示意图，该装置相比于图9所示的装置，还包括邻区管理单元940。该邻区管理单元940，用于确定第二测量的测量报告中的小区是否为终端的服务小区的邻区；当测量报告中的小区不是终端的服务小区的邻区时，将该小区添加为终端的服务小区的邻区。
请继续参考图11，其为本申请实施例提供的另一种业务回落装置的示意图，该装置相比于图9所示的装置，还包括触发单元950。用于确定终端有业务回落需求，以触发发送单元910发送第一测量控制信息和第二测量控制信息。具体，该触发单元950可以在接收到核心网设备发送的回落指示时触发发送单元910发送第一测量控制信息和第二测量控制信息，也可以在接收到终端发送的用于通知网络侧该终端有CS业务需求的请求消息时触发发送单元910发送第一测量控制信息和第二测量控制信息。具体可以参照图1，不再进行详述。
需要说明的是，以上各个单元可以为单独设立的处理器，也可以集成在RAN设备的某一个处理器中实现，此外，也可以以程序代码的形式存储于RAN设备的存储器中，由RAN设备的某一个处理器调用并执行以上各个单元的功能。此外各个单元可以集成在一起，也可以独立实现。这里所述的处理器可以是一个中央处理器(Central Processing Unit，CPU)，或者是特定集成电路(Application Specific Integrated Circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路。此外，以上发送单元910 可以通过RAN设备的射频装置向终端发送信息。
例如，请参考图12，其为本申请实施例提供的一种RAN设备的结构示意图。如图12所示，该RAN设备1200包括处理器1210，存储器1220，第一接口1230和第二接口1240。其中，存储器1220、第一接口1230和第二接口1240均与处理器1210相连接，且第一接口1230用于与CN设备通信，第二接口1240用于与终端通信，存储器1220用于存储程序。
处理器1210调用存储器1220存储的程序，以执行以上方法实施例中任一种业务回落的方法，例如执行以下操作：
在终端有业务回落需求时，通过第二接口1240向终端发送第一测量控制信息和第二测量控制信息，分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
根据终端对第一测量和第二测量之一或全部的上报情况，确定目标CS无线网络，该目标CS无线网络为第一CS无线网络或第二CS无线网络；
将终端的业务回落到目标CS无线网络中。
关于第一测量控制信息和第二测量控制信息的描述，以及第一测量和第二测量的测量和上报形式、上报内容，同以上方法实施例，在此不再赘述。此外，对于目标CS无线网络的确定情况同以上方法实施例，在此也不再赘述。
此外，同以上方法实施例，存储器1220还可以存储的邻区管理的程序，以便处理器1210调用并执行以下操作：
确定第二测量的测量报告中的小区是否为终端的服务小区的邻区；当测量报告中的小区不是终端的服务小区的邻区时，将该小区添加为终端的服务小区的邻区。
此外，关于终端是否有有业务回落需求的确认同以上方法实施例，在此不再赘述。
需要说明的是，这里的处理器1210可以是一个处理器，也可以是多个处理元件的统称，例如，该处理器可以是CPU，也可以是ASIC，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)。
存储器1220可以是一个存储装置，也可以是多个存储元件的统称，且用于存储可执行程序代码或RAN设备运行所需要的参数、数据等。且存储器1220可以包括随机存储器(RAM)，也可以包括非易失性存储器(non-volatile memory)，例如磁盘存储器，闪存(Flash)等。
第一接口1230用于与CN设备通信，其可以为有线接口，也可以为无线接口，例如，可以为光纤接口，以连接与CN设备相连的光纤。这仅为举例，任何可以实现与CN设备通信的接口均可以使用。第二接口1240用于与终端通信，在实现上当处理器1210位于基带部件上时，可以通过该第二接口1240与射频部件连接，通过射频部件与终端通信。例如，该第二接口1240可以为通用公共无线电接口(Common Public Radio Interface，CPRI)。
请参考图13，其为本申请实施例提供的一种业务回落装置的示意图，该装置1300应用于终端，且用于终端的业务从PS无线网络回落到CS无线网络的过程中，其中，CS无线网络包括第一CS无线网络和第二CS无线网络。且第一CS无线网络为优选CS无线网络，例如UMTS网络，第二CS无线网络为候选CS无线网络，例如GSM网络。如图13所示，该装置1300包括：接收单元1301，测量单元1302，测量结果处理单元1303和CS业务处理单元1304。其中，接收单元1301用于接收PS无线网络中的RAN设备发送的第一测量控制信息和第二测量控制信息，其中第一测量控制信息和第二测量控制信息分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量。测量单元1302用于分别根据第一测量控制信息和第二测 量控制信息，进行第一测量和第二测量；测量结果处理单元1303用于根据第一测量的测量结果和第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中第一测量和第二测量之一或全部的上报情况用于确定该终端的业务回落的目标CS无线网络，其中目标CS无线网络为第一CS无线网络或第二CS无线网络。CS业务处理单元1304用于在目标CS无线网络进行CS业务。
关于第一测量控制信息和第二测量控制信息的描述，以及第一测量和第二测量的测量和上报形式、上报内容，同以上方法实施例，例如，测量结果处理单元1303用于当测量单元1302测量到的邻区的信号强度满足第一预设要求时，上报第一测量的测量报告，其中，第一测量的测量报告包括信号强度满足第一预设要求的邻区的标识，或者，信号强度满足第一预设要求的邻区的标识和该邻区的信号强度。再如，测量单元1302对第二测量进行周期测量，测量结果处理单元1303可以根据测量结果进行周期上报。其中，第二测量的测量报告包括：信号强度最强的小区的标识和该小区的信号强度；信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，测量到的该邻频点的所有小区的标识及信号强度。详细参照以上方法实施例，在此不再详述。
且对于目标CS无线网络是第一CS无线网络还是第二CS无线网络的描述同以上方法实施例，例如当测量结果处理单元1303在预设时间内上报第一测量的测量报告，且测量报告包括信号强度满足第一预设要求的邻区时，目标CS无线网络为第一CS无线网络；或者，当测量结果处理单元1303在预设时间内上报第二测量的测量报告，且测量报告包括信号强度满足第二预设要求的小区时，目标CS无线网络为第一CS无线网络；或者，当测量结果处理单元1303在预设时间内未上报第一测量的测量报告和第二测量的测量报告时，目标CS无线网络为第二CS无线网络；或者，当测量结果 处理单元1303在预设时间内上报第一测量的测量报告和第二测量的测量报告之一或全部，且第一测量的测量报告中不包括满足第一预设要求的邻区，第二测量的测量报告中不包括满足第二预设要求的小区时，目标CS无线网络为第二CS无线网络。
请继续参考图14，其为本申请实施例提供的另一种业务回落装置的示意图，相对于图13所示的装置，还包括发送单元1305，用于在接收所第一测量控制信息和第二测量控制信息之前，向RAN设备发送请求消息，该请求消息用于通知网络侧该终端有CS业务需求。如此，网络侧的CN设备便可以根据该请求消息向RAN设备发送指示信息，以指示RAN设备将终端回落到CS无线网络中，如此RAN设备便可以基于该指示信息向终端发送第一测量控制信息和第二测量控制信息。当然，RAN设备也可以在接收到以上终端发送的请求消息时，就向终端发送第一测量控制信息和第二测量控制信息。
需要说明的是，以上各个单元可以为单独设立的处理器，也可以集成在终端的某一个处理器中实现，此外，也可以以程序代码的形式存储于终端的存储器中，由终端的某一个处理器调用并执行以上各个单元的功能。此外各个单元可以集成在一起，也可以独立实现。这里所述的处理器可以是一个中央处理器(Central Processing Unit，CPU)，或者是特定集成电路(Application Specific Integrated Circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路。此外，以上接收单元1301和发送单元1303可以通过终端的收发机从RAN设备接收信息，并将信息发送给RAN设备。
例如，请参考图15，其为本申请实施例提供的一种终端的结构示意图。如图15所示，该终端1500包括处理器1501，存储器1502，和接口1503。其中，存储器1502和接口1503均与处理器1501相连接，且接口1503用于与RAN设备通信，存储器1502用于存储程序。
处理器1501调用存储器1502存储的程序，以执行以上方法实施例中 终端执行的任一种对正在进行语音业务的终端进行处理的方法，例如执行以下操作：
通过接口1503接收PS无线网络中的无线接入网RAN设备发送的第一测量控制信息和第二测量控制信息，其中第一测量控制信息和第二测量控制信息分别用于指示终端对第一CS无线网络进行第一测量和第二测量，其中，第一测量为异系统邻区的信号测量，第二测量为邻频点的小区测量；
分别根据第一测量控制信息和第二测量控制信息，进行第一测量和第二测量；
根据第一测量的测量结果和第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中第一测量和第二测量之一或全部的上报情况用于确定终端的业务回落的目标CS无线网络，其中目标CS无线网络为第一CS无线网络或第二CS无线网络；
在目标CS无线网络进行CS业务。
关于第一测量控制信息和第二测量控制信息的描述，以及第一测量和第二测量的测量和上报形式、上报内容，同以上方法实施例，例如，处理器1501用于当测量到的邻区的信号强度满足第一预设要求时，上报第一测量的测量报告，其中，第一测量的测量报告包括信号强度满足第一预设要求的邻区的标识，或者，信号强度满足第一预设要求的邻区的标识和该邻区的信号强度。再如，处理器1501对第二测量进行周期测量和上报。其中，第二测量的测量报告包括：信号强度最强的小区的标识和该小区的信号强度；信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，测量到的该邻频点的所有小区的标识及信号强度。详细参照以上方法实施例，在此不再详述。
且对于目标CS无线网络是第一CS无线网络还是第二CS无线网络的描述同以上方法实施例，例如当处理器1501在预设时间内上报第一测量的测量报告，且测量报告包括信号强度满足第一预设要求的邻区时，目标CS 无线网络为第一CS无线网络；或者，当处理器1501在预设时间内上报第二测量的测量报告，且测量报告包括信号强度满足第二预设要求的小区时，目标CS无线网络为第一CS无线网络；或者，当处理器1501在预设时间内未上报第一测量的测量报告和第二测量的测量报告时，目标CS无线网络为第二CS无线网络；或者，当处理器1501在预设时间内上报第一测量的测量报告和第二测量的测量报告之一或全部，且第一测量的测量报告中不包括满足第一预设要求的邻区，第二测量的测量报告中不包括满足第二预设要求的小区时，目标CS无线网络为第二CS无线网络。
此外，处理器1501还用于通过接口1503向RAN设备发送请求消息，该请求消息用于通知网络侧该终端有CS业务需求，以便网络侧下发第一测量控制信息和第二测量控制信息。例如，网络侧的CN设备可以根据该请求消息向RAN设备发送指示信息，以指示RAN设备将终端回落到CS无线网络中，如此RAN设备便可以基于该指示信息向终端发送第一测量控制信息和第二测量控制信息。当然，RAN设备也可以在接收到以上终端发送的请求消息时，就向终端发送第一测量控制信息和第二测量控制信息。
需要说明的是，这里的处理器1501可以是一个处理器，也可以是多个处理元件的统称，例如，该处理器可以是CPU，也可以是ASIC，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)。
存储器1502可以是一个存储装置，也可以是多个存储元件的统称，且用于存储可执行程序代码或终端运行所需要的参数、数据等。且存储器102可以包括随机存储器(RAM)，也可以包括非易失性存储器(non-volatile memory)，例如磁盘存储器，闪存(Flash)等。
接口1503用于与RAN设备通信，例如，通过该接口1503与终端的天线连接，以通过天线将信息发送给RAN设备。
通过以上的实施例的描述，所属领域的技术人员可以清楚地了解到本申请可以用硬件实现，或固件实现，或它们的组合方式来实现。当使用软件实现时，可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如，如果软件是使用同轴电缆、光纤光缆、双绞线、数字用户线(DSL)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的，那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。
总之，以上所述仅为本申请技术方案的较佳实施例而已，并非用于限定本申请的保护范围。凡在本申请的原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (35)

  1. 一种业务回落方法，用于将终端的业务从分组交换PS无线网络回落到电路交换CS无线网络中，所述CS无线网络包括第一CS无线网络和第二CS无线网络，该方法由所述PS无线网络中的无线接入网RAN设备执行，包括：
    所述RAN设备在终端有业务回落需求时，向所述终端发送第一测量控制信息和第二测量控制信息，分别用于指示所述终端对所述第一CS无线网络进行第一测量和第二测量，其中，所述第一测量为异系统邻区的信号测量，所述第二测量为邻频点的小区测量；
    所述RAN设备根据所述终端对所述第一测量和所述第二测量之一或全部的上报情况，确定目标CS无线网络，所述目标CS无线网络为第一CS无线网络或第二CS无线网络；
    所述RAN设备将所述终端的业务回落到所述目标CS无线网络中。
  2. 如权利要求1所述的方法，其特征在于，所述第一测量控制信息包括异系统邻区的小区标识；所述第二测量控制信息包括邻频点的信息。
  3. 如权利要求1或2所述的方法，其特征在于，所述第一测量的上报为事件触发上报，且所述事件为所述终端测量到的邻区的信号强度满足第一预设要求。
  4. 如权利要求3所述的方法，其特征在于，所述第一测量的测量报告包括信号强度满足第一预设要求的邻区的标识，或者，信号强度满足第一预设要求的邻区的标识和该邻区的信号强度。
  5. 如权利要求1至4任一项所述的方法，其特征在于，所述第二测量为周期测量。
  6. 如权利要求5所述的方法，其特征在于，所述第二测量的测量报告包括：
    信号强度最强的小区的标识和该小区的信号强度；
    信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，
    测量到的该邻频点的所有小区的标识及信号强度。
  7. 如权利要求1至6任一项所述的方法，其特征在于，所述RAN设备根据所述终端对所述第一测量和所述第二测量之一或全部的上报情况，确定目标CS无线网络，包括：
    当所述RAN设备在预设时间内接收到所述第一测量的测量报告，且所述测量报告包括信号强度满足第一预设要求的邻区时，确定所述目标CS无线网络为第一CS无线网络；或者，
    当所述RAN设备在预设时间内接收到所述第二测量的测量报告，且所述测量报告包括信号强度满足第二预设要求的小区时，确定所述目标CS无线网络为第一CS无线网络；或者，
    当所述RAN设备在预设时间内未接收所述第一测量的测量报告和所述第二测量的测量报告时，确定所述目标CS无线网络为第二CS无线网络；或者，
    当所述RAN设备在预设时间内接收到所述第一测量的测量报告和所述第二测量的测量报告之一或全部，所述第一测量的测量报告中不包括满足第一预设要求的邻区，所述第二测量的测量报告中不包括满足第二预设要求的小区时，确定所述目标CS无线网络为第二CS无线网络。
  8. 如权利要求1至7任一项所述的方法，其特征在于，当所述RAN设备接收到所述第二测量的测量报告时，所述方法还包括：
    所述RAN设备确定所述测量报告中的小区是否为所述终端的服务小区的邻区；
    当所述测量报告中的小区不是所述服务小区的邻区时，将该小区添加为所述服务小区的邻区。
  9. 如权利要求1至8任一项所述的方法，其特征在于，所述RAN设 备在以下任一种情况下，确定所述终端有业务回落需求：
    所述RAN设备接收到核心网设备发送的回落指示；
    所述RAN设备接收到所述终端发送的请求消息，所述请求消息用于通知网络侧所述终端有CS业务需求。
  10. 一种业务回落方法，用于终端的业务从分组交换PS无线网络回落到电路交换CS无线网络的过程中，所述CS无线网络包括第一CS无线网络和第二CS无线网络，所述方法包括：
    所述终端接收所述PS无线网络中的无线接入网RAN设备发送的第一测量控制信息和第二测量控制信息，其中所述第一测量控制信息和所述第二测量控制信息分别用于指示所述终端对所述第一CS无线网络进行第一测量和第二测量，其中，所述第一测量为异系统邻区的信号测量，所述第二测量为邻频点的小区测量；
    所述终端分别根据所述第一测量控制信息和第二测量控制信息，进行所述第一测量和所述第二测量；
    所述终端根据所述第一测量的测量结果和所述第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中所述第一测量和所述第二测量之一或全部的上报情况用于确定所述终端的业务回落的目标CS无线网络，其中所述目标CS无线网络为所述第一CS无线网络或所述第二CS无线网络；
    所述终端在所述目标CS无线网络进行CS业务。
  11. 如权利要求权利要求10所述的方法，其特征在于，所述第一测量控制信息包括异系统邻区的小区标识；所述第二测量控制信息包括邻频点的信息。
  12. 如权利要求10或11所述的方法，其特征在于，所述终端确定是否上报第一测量的测量报告，包括：
    当所述终端测量到的邻区的信号强度满足第一预设要求时，所述终端 上报所述第一测量的测量报告。
  13. 如权利要求12所述的方法，其特征在于，所述第一测量的测量报告包括信号强度满足所述第一预设要求的邻区的标识，或者，信号强度满足所述第一预设要求的邻区的标识和该邻区的信号强度。
  14. 如权利要求10至13任一项所述的方法，其特征在于，所述终端对所述第二测量进行周期测量。
  15. 如权利要求14所述的方法，其特征在于，所述第二测量的测量报告包括：
    信号强度最强的小区的标识和该小区的信号强度；
    信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，
    测量到的该邻频点的所有小区的标识及信号强度。
  16. 如权利要求10至15任一项所述的方法，其特征在于，当所述终端在预设时间内上报所述第一测量的测量报告，且所述测量报告包括信号强度满足第一预设要求的邻区时，所述目标CS无线网络为第一CS无线网络；或者，
    当所述终端在预设时间内上报所述第二测量的测量报告，且所述测量报告包括信号强度满足第二预设要求的小区时，所述目标CS无线网络为第一CS无线网络；或者，
    当所述终端在预设时间内未上报所述第一测量的测量报告和所述第二测量的测量报告时，所述目标CS无线网络为第二CS无线网络；或者，
    当所述终端在预设时间内上报所述第一测量的测量报告和所述第二测量的测量报告之一或全部，且所述第一测量的测量报告中不包括满足第一预设要求的邻区，所述第二测量的测量报告中不包括满足第二预设要求的小区时，所述目标CS无线网络为第二CS无线网络。
  17. 如权利要求10至16任一项所述的方法，其特征在于，在接收所 第一测量控制信息和所述第二测量控制信息之前，所述方法还包括：
    所述终端向所述RAN设备发送请求消息，所述请求消息用于通知网络侧所述终端有CS业务需求。
  18. 一种业务回落装置，用于将终端的业务从分组交换PS无线网络回落到电路交换CS无线网络中，所述CS无线网络包括第一CS无线网络和第二CS无线网络，该装置应用于所述PS无线网络中的无线接入网RAN设备，且包括：
    发送单元，用于在终端有业务回落需求时，向所述终端发送第一测量控制信息和第二测量控制信息，分别用于指示所述终端对所述第一CS无线网络进行第一测量和第二测量，其中，所述第一测量为异系统邻区的信号测量，所述第二测量为邻频点的小区测量；
    确定单元，用于根据所述终端对所述第一测量和所述第二测量之一或全部的上报情况，确定目标CS无线网络，所述目标CS无线网络为第一CS无线网络或第二CS无线网络；
    回落单元，用于将所述终端的业务回落到所述目标CS无线网络中。
  19. 如权利要求18所述的装置，其特征在于，所述第一测量控制信息包括异系统邻区的小区标识；所述第二测量控制信息包括邻频点的信息。
  20. 如权利要求18或19所述的装置，其特征在于，所述第一测量的上报为事件触发上报，且所述事件为所述终端测量到的邻区的信号强度满足第一预设要求。
  21. 如权利要求20所述的装置，其特征在于，所述第一测量的测量报告包括信号强度满足第一预设要求的邻区的标识，或者，信号强度满足第一预设要求的邻区的标识和该邻区的信号强度。
  22. 如权利要求18至21任一项所述的装置，其特征在于，所述第二测量为周期测量。
  23. 如权利要求22所述的装置，其特征在于，所述第二测量的测量报 告包括：
    信号强度最强的小区的标识和该小区的信号强度；
    信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，
    测量到的该邻频点的所有小区的标识及信号强度。
  24. 如权利要求18至23任一项所述的装置，其特征在于，所述确定单元用于：
    当所述RAN设备在预设时间内接收到所述第一测量的测量报告，且所述测量报告包括信号强度满足第一预设要求的邻区时，确定所述目标CS无线网络为第一CS无线网络；或者，
    当所述RAN设备在预设时间内接收到所述第二测量的测量报告，且所述测量报告包括信号强度满足第二预设要求的小区时，确定所述目标CS无线网络为第一CS无线网络；或者，
    当所述RAN设备在预设时间内未接收所述第一测量的测量报告和所述第二测量的测量报告时，确定所述目标CS无线网络为第二CS无线网络；或者，
    当所述RAN设备在预设时间内接收到所述第一测量的测量报告和所述第二测量的测量报告之一或全部，所述第一测量的测量报告中不包括满足第一预设要求的邻区，所述第二测量的测量报告中不包括满足第二预设要求的小区时，确定所述目标CS无线网络为第二CS无线网络。
  25. 如权利要求18至24任一项所述的装置，其特征在于，还包括邻区管理单元，用于：
    确定所述测量报告中的小区是否为所述终端的服务小区的邻区；
    当所述测量报告中的小区不是所述服务小区的邻区时，将该小区添加为所述服务小区的邻区。
  26. 如权利要求18至25任一项所述的装置，其特征在于，还包括触 发单元，用于在以下任一种情况下，确定所述终端有业务回落需求，以触发所述发送单元发送所述第一测量控制信息和所述第二测量控制信息：
    所述装置接收到核心网设备发送的回落指示；
    所述装置接收到所述终端发送的请求消息，所述请求消息用于通知网络侧所述终端有CS业务需求。
  27. 一种业务回落装置，用于终端的业务从分组交换PS无线网络回落到电路交换CS无线网络的过程中，所述CS无线网络包括第一CS无线网络和第二CS无线网络，该装置应用于所述终端，且包括：
    接收单元，用于接收所述PS无线网络中的无线接入网RAN设备发送的第一测量控制信息和第二测量控制信息，其中所述第一测量控制信息和所述第二测量控制信息分别用于指示所述终端对所述第一CS无线网络进行第一测量和第二测量，其中，所述第一测量为异系统邻区的信号测量，所述第二测量为邻频点的小区测量；
    测量单元，用于分别根据所述第一测量控制信息和第二测量控制信息，进行所述第一测量和所述第二测量；
    测量结果处理单元，用于根据所述第一测量的测量结果和所述第二测量的测量结果，确定是否上报第一测量的测量报告，以及是否上报第二测量的测量报告，其中所述第一测量和所述第二测量之一或全部的上报情况用于确定所述终端的业务回落的目标CS无线网络，其中所述目标CS无线网络为所述第一CS无线网络或所述第二CS无线网络；
    CS业务处理单元，用于在所述目标CS无线网络进行CS业务。
  28. 如权利要求权利要求27所述的装置，其特征在于，所述第一测量控制信息包括异系统邻区的小区标识；所述第二测量控制信息包括邻频点的信息。
  29. 如权利要求27或28所述的装置，其特征在于，所述测量结果处理单元用于：
    当所述测量单元测量到的邻区的信号强度满足第一预设要求时，上报所述第一测量的测量报告。
  30. 如权利要求29所述的装置，其特征在于，所述第一测量的测量报告包括信号强度满足所述第一预设要求的邻区的标识，或者，信号强度满足所述第一预设要求的邻区的标识和该邻区的信号强度。
  31. 如权利要求27至30任一项所述的装置，其特征在于，所述测量单元对所述第二测量进行周期测量。
  32. 如权利要求31所述的装置，其特征在于，所述第二测量的测量报告包括：
    信号强度最强的小区的标识和该小区的信号强度；
    信号强度满足第二预设要求的小区的标识，或者，信号强度满足第二预设要求的小区的标识和该小区的信号强度；或者，
    测量到的该邻频点的所有小区的标识及信号强度。
  33. 如权利要求27至32任一项所述的装置，其特征在于，当所述测量结果处理单元在预设时间内上报所述第一测量的测量报告，且所述测量报告包括信号强度满足第一预设要求的邻区时，所述目标CS无线网络为第一CS无线网络；或者，
    当所述测量结果处理单元在预设时间内上报所述第二测量的测量报告，且所述测量报告包括信号强度满足第二预设要求的小区时，所述目标CS无线网络为第一CS无线网络；或者，
    当所述测量结果处理单元在预设时间内未上报所述第一测量的测量报告和所述第二测量的测量报告时，所述目标CS无线网络为第二CS无线网络；或者，
    当所述测量结果处理单元在预设时间内上报所述第一测量的测量报告和所述第二测量的测量报告之一或全部，且所述第一测量的测量报告中不包括满足第一预设要求的邻区，所述第二测量的测量报告中不包括满足第 二预设要求的小区时，所述目标CS无线网络为第二CS无线网络。
  34. 如权利要求27至33任一项所述的装置，其特征在于，还包括：
    发送单元，用于在接收所第一测量控制信息和所述第二测量控制信息之前，向所述RAN设备发送请求消息，所述请求消息用于通知网络侧所述终端有CS业务需求。
  35. 一种通信系统，包括：分组交换PS无线网络、第一电路交换CS无线网络、和第二CS无线网络，其中所述PS无线网络的无线接入网RAN设备包括如权利要求18至26任一项所述装置。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101909342A (zh) * 2009-06-02 2010-12-08 华为技术有限公司 电路交换回落方法与系统、接入网网元
CN103068010A (zh) * 2012-12-26 2013-04-24 华为技术有限公司 一种目标小区的选择方法及装置
EP2816829A2 (en) * 2012-03-14 2014-12-24 Huawei Technologies Co., Ltd. Method and apparatus for handling voice calls

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101909342A (zh) * 2009-06-02 2010-12-08 华为技术有限公司 电路交换回落方法与系统、接入网网元
EP2816829A2 (en) * 2012-03-14 2014-12-24 Huawei Technologies Co., Ltd. Method and apparatus for handling voice calls
CN103068010A (zh) * 2012-12-26 2013-04-24 华为技术有限公司 一种目标小区的选择方法及装置

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