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WO2009097811A1 - 分组域用户处理电路域业务的方法、装置及系统 - Google Patents

分组域用户处理电路域业务的方法、装置及系统 Download PDF

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Publication number
WO2009097811A1
WO2009097811A1 PCT/CN2009/070302 CN2009070302W WO2009097811A1 WO 2009097811 A1 WO2009097811 A1 WO 2009097811A1 CN 2009070302 W CN2009070302 W CN 2009070302W WO 2009097811 A1 WO2009097811 A1 WO 2009097811A1
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WO
WIPO (PCT)
Prior art keywords
domain
circuit domain
call
user equipment
short message
Prior art date
Application number
PCT/CN2009/070302
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English (en)
French (fr)
Inventor
Wei Guo
Xiaoqin Duan
Jian Zhang
Qingyu Li
Xiaobo Wu
Original Assignee
Huawei Technologies Co., Ltd.
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Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009097811A1 publication Critical patent/WO2009097811A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections

Definitions

  • the present invention relates to the field of communications, and in particular, to a technology for implementing packet domain user processing circuit domain services.
  • 2G/3G second generation mobile communication technology / third generation mobile communication technologies, such as GSM and
  • PS domain networks After years of deployment, the network can be seen as a comprehensive coverage to some extent.
  • S AE/LTE System Architecture Evolution/Long Term Evolution
  • HSPA High Speed Packet Access
  • HSPA+ High Speed Packet Access Evolution, High-speed packet access evolution
  • WiMAX Worldwide Interoperability for Microwave Access
  • PS domain networks For convenience of description, networks such as SAE/LTE, HSPA, HSPA+, and WiMAX that provide only PS (Packet Switching) domains are collectively referred to as PS domain networks.
  • voice calls for mobile communications can be classified into the following categories for different network bearer mechanisms:
  • the first type is a session type service carried by a CS (Circuit Switching) domain, such as a voice call;
  • CS Circuit Switching
  • the second type is the session-type service carried by the PS domain, which is also called VoIP (Voice over IP).
  • the QoS Quality of Service, Service
  • IMS IP Multimedia Subsystem
  • Quality Guaranteed, such as IP-hosted voice calls.
  • PS domain networks voice calls are transmitted on their PS domain bearers, and IMS controls voice calls over IP-based networks.
  • IMS IP Multimedia Subsystem
  • voice calls are generally carried on the CS domain.
  • SA domain networks such as SAE/LTE, HSPA, HSPA+, and WiMAX
  • coverage is provided for hotspots, and 2G/3G networks can be regarded as a full coverage to some extent. Therefore, in the case where only the user's high-speed data service is provided or the IMS has not been deployed, the CS service including the voice call needs to be carried by the CS domain of the traditional network, that is, the CS service of the user needs to return to the CS of the 2G/3G network.
  • the domain is implemented, this is the process of CS Fallback.
  • Page in LTE call in 2G/3G CS (LTE paging, 2G/3G call setup) technology is based on the update process of TA/LA (Tracking Area/Location Area) combination, TA
  • the update of the LA is triggered during the update process.
  • the paging messages of all voice calls are from the MSC (Mobile Switching Center) of the 2G/3G network.
  • the paging message is forwarded by the MSC to the MME (Mobility Management Entity), and then sent by the MME to the eNB (Envolved NodeB, the evolved NodeB).
  • the eNB does not continue to deliver the paging message.
  • the user equipment is switched to the 2G/3G network through PS handover (PS domain handover), and the call is established in the CS domain of the 2G/3G network.
  • PS handover PS domain handover
  • the inventor has found that the UE of the prior art receives the CS Fallback message if it receives the Paging message from the CS domain, ignoring the willingness of the user to receive the call, and whether the user chooses whether to perform the call in the prior art.
  • CS Fallback there is no effective solution yet.
  • Embodiments of the present invention provide a method for a packet domain user to process a circuit domain service, so that a user can independently select whether to perform CS Fallback.
  • the method for processing a circuit domain service by a packet domain user includes: receiving a calling call page from a circuit domain; acquiring circuit domain CS domain call indication information; determining the calling call according to the indication information If the predetermined condition is met, then fall back to the Circuit domain for the circuit domain call process.
  • the method for processing a short message service by a packet domain user includes: when the user equipment located in the packet domain performs a short message service with the user equipment located in the circuit domain, the user equipment determines not to fall back to the circuit domain, The short message service is performed by signaling in the packet domain network side.
  • a receiving unit configured to process a calling call from the circuit domain
  • a determining unit configured to determine, according to the network side indication carried by the received message, whether the call meets a predetermined condition
  • the processing unit is configured to, when the determining unit determines to make a call, roll back to the circuit domain to perform a circuit domain call process.
  • a mobile communication system includes a network side and a terminal side, where the terminal side includes:
  • the user equipment is configured to: when receiving the calling call page from the network side circuit domain or performing another call setup process, determining, according to the indication of the network side, that the call meets a predetermined condition, and backing off to the circuit domain, performing a circuit domain call process.
  • the CS domain call indication information such as the calling number and the calling category, is sent by the network, so that the user can select whether to perform CS Fallback according to the information, which indicates whether the user is willing to accept the call, and
  • the harassing call from the CS domain allows the user to avoid unnecessary backoff and enhance the user's autonomy during the call.
  • FIG. 1 is a schematic diagram of a network architecture in a scenario according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method 1 according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a method 2 according to an embodiment of the present invention
  • 4 is a schematic diagram of a specific application embodiment 1 of the method provided by the embodiment of the present invention in the network architecture A shown in FIG. 1;
  • FIG. 5 is a schematic diagram of a specific application example 2 of the method provided by the embodiment of the present invention in the network architecture A shown in FIG. 1;
  • FIG. 6 is a schematic diagram of a specific application embodiment of a method provided by an embodiment of the present invention in a network architecture B;
  • FIG. 7 is a schematic diagram of a specific application embodiment of a short message service according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a mobile communication system according to an embodiment of the present invention.
  • the LTE network is selected as an example of the PS domain network to introduce the solution. It should be particularly noted that the solution in the embodiment of the present invention can still be applied to the foregoing system.
  • the current network may have both architecture A and architecture B schemes.
  • Architecture A needs to upgrade the MSC to support sending voice call paging messages to the MME. If the BSSAP+ (Base Station System Application Part Plus) protocol and the MAP (Mobile Application Part) protocol are not supported on the MME, there is a protocol translation entity (Protocol Translator) between the MME and the MSC. The entity is responsible for converting the Diameter protocol supported by the MME to the BSSAP+ or MAP protocol supported on the MSC.
  • the BSS is a base station system
  • the RNS is a radio access network system.
  • a logical function IWF Interworking Function
  • IWF Interworking Function
  • CS Fallback is implemented in the architecture, and the circuit domain is sent in the SAE/LTE network through the IWF.
  • Call signaling leaving the UE in The Active state, which in turn switches the UE to the 2G/3G network through the Handover procedure and establishes a circuit domain call. Since the CS domain call signaling is established in the LTE/SAE network and CS Fallback is performed in the handover manner, the user's selection right for the CS service is slightly different from the traditional call selection mechanism, that is, the called user receives the Setup. After the (establishment) message, the recipient's willingness to choose will be based on the calling number.
  • An embodiment of the present invention provides a voice call method. As shown in FIG. 2, the method includes the following steps: In step 201, receiving a calling call page from a circuit domain;
  • step 202 acquiring CS domain call indication information
  • step 203 if it is determined according to the indication information that the calling call satisfies a predetermined condition, it is rolled back to the circuit domain to perform a circuit domain calling process.
  • the embodiment of the present invention provides a voice call method. As shown in FIG. 3, the method includes the following steps: In step 301, a user equipment located in a packet domain receives a paging call from a circuit domain or performs other operations. During the call setup process;
  • step 302 if the user equipment determines, according to an indication of the network side, the call meets a predetermined condition
  • step 303 the circuit domain is rolled back to the circuit domain to perform a circuit domain call process.
  • the UE is already attached to the LTE network. If the CS domain user calls the UE, in the paging phase, the UE determines whether to perform CS Fallback according to the information carried in the paging message, as shown in FIG. 4 .
  • the MSC sends the CS page information to the MME, where the CS information can carry the CS domain call indication information.
  • the CS domain call indication information can be the calling number or the calling category or the network. After the side judgment, other information indicating the CS domain call may be indicated.
  • the CS domain call indication information is used to indicate the call user from the CS domain, but is not limited to the calling number or the calling category, as long as the calling user can be instructed to call the user information from the CS domain. Both can be used as CS domain call indication information.
  • the cs domain call indication information is simply the name used for convenience of description. This name is not limited to the scope of application of the embodiments of the present invention, that is, in some systems, there may be no name of the CS domain call indication information, but the technical solution in the embodiment of the present invention cannot be considered to be applicable to these systems. .
  • the MME After receiving the CS Page information, the MME sends a paging request message to the UE through the eNB.
  • the CN Domain Indicator in the message indicates that this is a page from the CS and carries the CS domain call indication information.
  • UE receives paging request message
  • the MSC directly sends the paging message to the MME, otherwise it is sent to the protocol conversion entity, and is sent to the MME after the protocol conversion of the entity.
  • step 404 after receiving the paging request message, the UE parses out the CS domain call indication information to determine whether CS Fallback.
  • the UE decides to perform CS Fallback if it needs to make a voice call with the calling party indicated by the calling number.
  • the CS domain call indication information is a calling category
  • the UE decides to accept the call request initiated by the category of the calling user, it decides to perform CS Fallback.
  • the UE decides to perform CS Fallback, it sends an acceptance indication to the LTE/SAE network, and the LTE/SAE network initiates a PS handover, a RAU (routing area update) according to the current state of the UE, and whether the target network supports the PS service.
  • the LAU (location area update) procedure is used for CS Fallback.
  • the UE rejects the CS call, it sends a reject indication to the LTE/SAE network, and the MME will return the rejection indication to the MSC; or the UE does not respond to any message, and the network side waits for the paging response to be released.
  • the UE may also block the paging message of the CS call by using the terminal operation, or send the indication signaling to the network to notify the network through the terminal operation. This type of paging message is not sent to the terminal.
  • the UE receives the CS call and falls back to the CS domain, where the CS domain is back. Paging response and establishing subsequent call signaling.
  • the UE may perform CS Fallback according to the CS domain call indication information, such as the calling number and the calling category, carried in the paging message of the CS in the paging process.
  • the decision mechanism for the UE to perform the CS Fallback depends entirely on the UE's autonomous choice, and reflects the willingness of the UE to accept the call. For harassing calls that may come from the CS domain, the UE can avoid unnecessary backoffs. For example, if the UE is performing a more important PS service at this time, and the CS network does not support the PS service, the UE can be prevented from sacrificing the existing PS service for CS Fallback.
  • the eNB may be configured to enable the eNB to determine whether to perform CS Fallback according to the indication of the network side. Specifically, it may be an operator configuration, or receive an indication from the UE to the network side.
  • the eNB may determine that the paging is from the CS according to the CN Domain Indicator in the message, and according to the CS domain call indication information carried in the message, the CS domain call indication information may be After the calling number or the calling category or the network side determines the other information that can indicate the CS domain call, the eNB may stop the sending of the paging message, perform the UE handover, and the like, so that the UE performs the CS Fallback process.
  • the solution also enables the network side to identify the calling page from the CS domain.
  • the CS Fallback determination process can also be completed.
  • the UE is already attached to the LTE network. If the CS domain user calls the UE, the UE determines whether to perform CS Fallback according to the information carried in the setup message. Specifically as shown in Figure 5.
  • the MSC sends a paging message to the MME, and the MME forwards to the MME.
  • the MSC directly sends the paging message to the MME, otherwise it sends the message to the protocol conversion entity.
  • the entity's protocol is converted and sent to the MME.
  • steps 504 to 506 the UE returns a paging response message, and the MME forwards the message to MSC.
  • step 507 an optional authentication, security process is provided.
  • the MSC sends a Setup message, where the message can carry the CS domain call indication information.
  • the CS domain call indication information can be determined by the calling number or the calling category or the network side. Other information that can indicate a CS domain call.
  • the MME forwards this message to the UE.
  • step 510 after receiving the setup message, the UE parses out the CS domain call indication information to determine whether CS Fallback.
  • step 404 The process of determining the CS domain call indication information by the UE is as shown in step 404, and is not described here.
  • steps 511 to 512 after the UE rolls back to the CS domain, it sends a call confirm message to the MSC in the CS domain, and completes the subsequent CS domain call signaling connection process.
  • the CS paging is completed in the LTE network, and the UE receives the setup message, and then according to the CS domain call indication information carried in the steup message, such as the calling number, the calling category, and the UE. Based on this information, the user chooses whether to perform CS Fallback.
  • the UE is already attached to the LTE network. If the CS domain user calls the UE, the network first sends the CS domain call indication information, such as the calling number or the calling category, to the UE in the form of an LTE short message.
  • the CS domain call indication information such as the calling number or the calling category
  • the MME When the MME receives the paging message from the MSC (the paging message carries the CS domain call indication information, such as the calling number or the calling category), the MME will notify the UE in the form of an LTE short message, and the user selects whether to return If the UE decides to fall back to the CS domain, it sends an acceptance indication to the LTE/SAE network.
  • the LTE/SAE network initiates a PS handover, RAU, or LAU procedure according to the current state of the UE and whether the target network supports the PS service. CS Fallback. If the UE rejects the CS call, the refusal indication is returned to the LTE/SAE network, and the MME will return the rejection indication to the MSC.
  • the UE returns to the MSC paging response message after returning to the CS domain network.
  • the difference between the present embodiment and the foregoing embodiment is that the CS paging is completed in the LTE network, and the UE receives the LTE message sent by the LTE network, and then according to the CS domain call indication information carried in the message, such as the calling number, the main Called category, UE users choose whether to perform CS Fallbacks based on this information.
  • the specific application embodiment 4 of the method of the embodiment in the network architecture B is described below.
  • the architecture adds a logical function IWF.
  • CS Fallback is implemented.
  • the IWF sends CS domain call signaling in the SAE/LTE network to make the UE in an active state, and then the UE is switched to the 2G/3G network through the HandOver process. And establish a circuit domain call.
  • the UE is already attached to the LTE network. If the CS domain user calls the UE, the UE determines whether to perform CS Fallbacko according to the information carried in the setup message, as shown in FIG. 6.
  • the MT is terminated by the mobile station, and the MO is the initial of the mobile station.
  • Step 601 in this embodiment is that the MSC1 receives an initial address message from the MSC2, where the message carries the called user information.
  • the process from step 602 to step 607 is basically similar to that in FIG. 5, except that the message in this embodiment is forwarded by the IWF due to different architectures.
  • Step 608 to step 609 Establish a radio access bearer.
  • Step 611 The UE falls back to the CS domain.
  • step 607 after receiving the setup message, the UE parses out the CS domain call indication information to determine whether CS Fallback.
  • the process of determining the CS domain call indication information by the UE is as shown in step 510, and details are not described herein again. If the UE falls back to the CS domain, it sends a call confirm message to the MSC in the CS domain, and completes the subsequent CS domain call signaling connection process. After the switch is complete, go to page 612 and return the connect message in the CS domain of the target network. If the UE rejects, the indication message is rejected to the network, and after the LTE/SAE parses the indication message, the next handover process is not performed.
  • the effect of this embodiment is that in the architecture B, the CS paging is completed in the LTE network, and the UE After receiving the setup message, the UE is based on the CS domain call indication information carried in the steup message, such as the calling number and the calling category.
  • the UE user selects whether to perform CS Fallback according to the information.
  • the UE is already attached to the LTE network. If the UE wants to perform short message service with the CS domain user, considering that the time required to receive/send the short message is short, and the signaling is performed, if the Fallback returns to the CS, it will cause unnecessary overhead, and It will increase the battery power consumption of the mobile phone. It can be considered that it is not necessary to drop the UE back to CS when receiving/sending a short message:
  • the SMS-GMSC Short Message Gateway directly routes the short message to the MME, and the MME pages the user to send a short message.
  • the VLR is a visit location register that is used to assign a roaming number to the user.
  • step 701 the SMS-SC (Short Message Service Center) sends an SM (short message) to the SMS Gateway (SMS-GMSC, SMS-G for short).
  • SMS-SC Short Message Service Center
  • the SMS-G checks the address of the target UE and sends a Send Routeing Info For Short Message to the corresponding HSS (Home Subscriber Server) for routing query.
  • HSS Home Subscriber Server
  • step 703 after the HSS checks the subscriber's subscription data, if the UE is allowed to receive the short message, the ij HS S returns a Send Route Info Info Short Message Result message to the SMS-G.
  • the message includes the MME and MSC address where the UE is currently located.
  • step 704 when there is an E/Gd interface between the SMS-G and the MME, the SMS-G sends a short message to the MME. If the interface does not exist, the SMS-G will send the short message to the MSC, and the MSC sends it to the MME through the Gs-like interface. Secondly, if the MAP protocol is supported on the MME, the SMS-G directly sends a short message to the MME, otherwise it can be sent to the protocol conversion entity. (Protocol Translator), the protocol conversion between the SMS-G and the MME is performed by the Protocol Translator, and then sent to the MME.
  • Protocol Translator Protocol Translator
  • step 705 the MME sends a short message to the UE.
  • the MME returns a Forward Short Message Result message to the SMS-G and indicates that the short message was successfully sent. If the short message is sent and the reason for the failure is a temporary cause such as the page is not responding and the storage capacity is full, the MME will indicate the reason for the failure in the message and set a bit on the MME to indicate the reason for the failure. SMS- After receiving the failure message, the GMSC sends a short message status message (which carries the reason for the failure) to the HSS, and the HSS sets the corresponding failure reason bit according to the status message.
  • the MME If, during the subsequent time, the MME knows that the reachable message or the storage space is available according to the message sent by the UE (such as page response, smmemory capacity available), the MME sends a short message. Prepare the message to the HSS to try to send the short message again.
  • step 707 after receiving the Forward Short Message Result, the SMS-G sends a Delivery Report message to the SMS-SC if the message indicates that the short message is successfully sent. If the above message indicates that the short message transmission failed, the SMS-G does not attempt to send the short message to the MSC, but sets a bit on it to receive the Forward Short Message Result message from the MME after the subsequent short message is successfully sent, and returns to the SMS.
  • the -SC Delivery Report message tells you that this short message has failed to be sent for subsequent attempts.
  • the LTE-attached UE first sends the short message to the MME, and the MME determines that the message is a short message service according to the indication of the message.
  • the MME sends the short message to the SMS-GMSC through the E/Gd interface, and the SMS-GMSC performs subsequent processing.
  • the process of sending a short message is not described here. It can be seen from this embodiment that In the scenario, when the UE in the PS domain performs the short message service with the user in the CS domain, the UE can perform the signaling according to the indication of the network side, and does not use the Fallback to return to the CS, thereby reducing unnecessary overhead and Reduce the battery power consumption of mobile phones.
  • the selective CS fallback can be implemented. If the UE decides to perform CS Fallback, the target CS domain is a 2G or 3G circuit domain network, and the UE is determined to fall back to the 2G network or the 3G network. Specific embodiment.
  • the preferred 3G network is determined by the network (such as the eNB).
  • the network such as the eNB
  • the network informs the UE of the target cell of the 3G network, and the UE falls back to the CS domain of the target cell.
  • the network (such as an eNB) informs the UE of the relevant information of the target 2G and 3G networks, and the UE chooses to fall back to the 2G network or the 3G network according to its own capabilities and service support capabilities.
  • the network (such as the eNB) determines whether the UE rolls back to the 2G network or the 3G network according to the capabilities reported by the UE and some of its own policies and network service support.
  • the UE reports the measurement report of the neighboring cell, and the network (such as the eNB) determines whether the UE falls back to the 2G network or the 3G network according to the measurement report and the service capability supported by the neighboring cell.
  • the network such as the eNB
  • the CS Fallback can be selectively implemented by using the foregoing implementations. If the UE decides to perform the CS Fallback, the UE selects whether to continue to camp on the 2G/3G circuit domain or return to the PS domain network after the CS domain ends the circuit domain call service. Use the following options:
  • the network instructs the UE to return to the LTE network, and the duration of the timer may be according to the carrier itself. The situation is set. If the time of the timer is zero, it means that the UE returns to the LTE network immediately after ending the CS domain service.
  • the UE chooses which network to camp on next. If the UE does not perform any operation, it means that it still stays in the CS domain. If the UE sets the process of initiating a TAU, it means that it will reside on the PS domain network.
  • the system in the embodiment of the present invention may further include other numerous entities that implement the communication function.
  • the system includes: a network side 8100 and a terminal side 8200, where the terminal side 8200 may include:
  • the user equipment 8210 is configured to, when processing the calling call from the circuit domain, if the user equipment determines that the call satisfies the predetermined condition according to the indication of the network side, then fall back to the circuit domain to perform a circuit domain call procedure.
  • the user equipment 8210 includes:
  • a receiving unit 8211 configured to process a calling call from the circuit domain
  • the determining unit 8212 is configured to determine, according to the network side indication carried in the received message, whether the call meets a predetermined condition
  • the processing unit 8213 is configured to: when the determining unit determines to make a call, roll back to the circuit domain to perform a circuit domain calling process.
  • the predetermined condition is one of the following or any combination thereof: the user equipment needs to perform circuit domain service with the calling user indicated by the calling number; the user equipment needs to perform circuit with the user of the category indicated by the calling category Domain business.
  • the network side 8100 can include a network side device 8110:
  • a paging unit 8112 configured to send a calling call paging message or a call setup message to a user equipment located in a packet domain;
  • the calling unit 8113 is configured to perform a calling process after the user equipment that is paged by the paging unit falls back to the circuit domain.
  • the information processing unit 8111 is configured to add a network side indication of the calling number or the calling category in the calling call paging message or the call setup message sent by the paging unit.
  • the program can be instructed to complete the related hardware, and the program can be stored in a computer readable storage medium.
  • the program includes the following steps:
  • the user equipment located in the packet domain receives the circuit domain.
  • the calling party calls the paging or performs other call setup procedures, if the user equipment determines that the call satisfies the predetermined condition according to the indication of the network side, it falls back to the circuit domain to perform a circuit domain calling process.
  • the predetermined condition is one of the following or any combination thereof: the user equipment needs to perform circuit domain service with the calling user indicated by the calling number; the user equipment needs to perform circuit domain with the user of the category indicated by the calling category business.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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Description

分组域用户处理电路域业务的方法、 装置及系统 本申请要求于 2008 年 02 月 01 日提交中国专利局、 申请号为 200810066061.2、 发明名称为 "分组域用户处理电路域业务的方法、 装置及 系统" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域, 特别涉及一种实现分组域用户处理电路域业务的 技术。
背景技术
2G/3G (第二代移动通信技术 /第三代移动通信技术, 例如 GSM和
WCDMA网络) 网络经过多年的部署, 在某种程度上可以看作一种全面的 覆盖。 如今, 随着技术的发展, S AE/LTE ( System Architecture Evolution/ Long Term Evolution ,系统架构演进 /长期演进) 、 HSPA (High Speed Packet Access,高速分组接入) 、 HSPA+ (High Speed Packet Access Evolution, 高 速分组接入演进) 以及 WiMAX (Worldwide Interoperability for Microwave Access, 微波存取全球互通) 网络已覆盖到一些地区, 所以目前的通信网络 中, 这些网络和 2G/3G网络并存。 为描述方便起见, 将仅提供 PS (Packet Switching, 分组交换) 域的 SAE/LTE、 HSPA, HSPA+、 WiMAX等网络统 称为 PS域网络。
现有技术中, 针对不同的网络承载机制, 可将移动通信的语音呼叫分为 如下几类:
第一类是 CS (Circuit Switching, 电路交换) 域承载的会话类业务, 如 语音电话;
第二类是 PS域承载的会话类业务,也称为 VoIP (Voice over IP, IP承载 语音技术) 类业务,由 IMS (IP Multimedia Subsystem, IP多媒体业务子系 统) 提供 QoS (Quality of Service, 服务质量) 保证,如 IP承载的语音电话。 对于 PS域网络, 语音呼叫在其 PS域承载上传输, IMS通过基于 IP的 网络来控制语音呼叫。 而在 2G/3G网络中, 语音呼叫一般是承载在 CS域 上。
在 SAE/LTE、 HSPA、 HSPA+、 WiMAX等 PS域网络的初始部署阶段 为热点地区覆盖, 而 2G/3G网络在某种程度上可看作一种全覆盖。 因此, 在仅仅提供用户高速数据业务或者尚未部署 IMS 的情况下, 包括语音呼叫 在内的 CS业务都要依靠传统网络的 CS域来承载, 即用户的 CS业务需要 回到 2G/3G网络的 CS域来实现, 这就是 CS Fallback (回退) 的过程。
现有技术中, Page in LTE, call in 2G/3G CS (LTE寻呼、 2G/3G建立呼 叫) 技术基于 TA/LA (Tracking Area/ Location Area, 跟踪区 /位置区) 组合 的更新过程, TA更新过程中触发 LA的更新, 所有语音呼叫的寻呼消息都 来自 2G/3G网络的 MSC (Mobile Switching Center, 移动交换中心) 。 这类 寻呼消息由 MSC转发到 MME (Mobility Management Entity, 移动管理实 体) , 并再由 MME下发到 eNB (Envolved NodeB, 演进的 NodeB) , eNB 并不继续下发该寻呼消息, 而是通过 PS handover (PS域切换) 将用户设备 切换到 2G/3G网络, 在 2G/3G网络的 CS域建立呼叫。
发明人发现现有技术的 UE如果收到来自 CS域的 Paging (寻呼) 消 息, 就要进行 CS Fallback, 忽略了用户是否愿意接收此呼叫的意愿, 而现 有技术中对于用户自主选择是否进行 CS Fallback, 还没有有效的解决方 案。
发明内容
本发明实施例提供一种分组域用户处理电路域业务的方法, 使得用户可 以自主选择是否进行 CS Fallback。
依据本发明实施例的分组域用户处理电路域业务的方法, 包含: 接收来自电路域的主叫呼叫寻呼; 获取电路域 CS域呼叫指示信息; 如果根据所述指示信息确定所述主叫呼叫满足预定条件, 则回退到所述 电路域以进行电路域呼叫过程。
依据本发明实施例的分组域用户处理短消息业务的方法, 包含: 位于分组域的用户设备在同位于电路域的用户设备进行短消息业务时, 所述用户设备确定不回退到电路域, 在分组域网络侧内通过信令方式进行所 述短消息业务。
依据本发明实施例的用户设备, 包含:
接收单元, 用于处理来自电路域的主叫呼叫;
判断单元, 用于根据接收到的消息所携带的网络侧指示, 判断该呼叫是 否满足预定条件;
处理单元, 用于在判断单元确定进行呼叫时, 则回退到电路域, 进行电 路域呼叫过程。
依据本发明实施例的移动通信系统, 包含网络侧和终端侧, 所述终端侧 包含:
用户设备, 用于在接收到来自网络侧电路域的主叫呼叫寻呼或者进行其 他呼叫建立过程时, 根据网络侧的指示确定该呼叫满足预定条件, 回退到该 电路域, 进行电路域呼叫过程。
通过比较可以发现, 上述技术方案中的一个技术方案与现有技术相比, 具有如下优点或有益效果:
本发明通过网络侧下发的 CS域呼叫指示信息, 如主叫号码、 主叫类别 等, 使得用户可以根据该信息进行选择是否进行 CS Fallback, 体现了用户 是否愿意接受进行呼叫的意愿, 对于可能来自 CS域的骚扰呼叫, 使得用户 可以避免不必要的回退, 增强了用户在呼叫过程中的自主性。
附图说明
图 1是本发明实施例所应用的一种场景下的网络架构示意图; 图 2是本发明实施例所提供一种方法 1流程图;
图 3是本发明实施例所提供一种方法 2流程图; 图 4是本发明实施例所提供的方法在图 1所示的网络架构 A中的具体 应用实施例 1的示意图;
图 5是本发明实施例所提供的方法在图 1所示的网络架构 A中的具体 应用实施例 2的示意图;
图 6是本发明实施例所提供的方法在网络架构 B 中的具体应用实施例 的示意图;
图 7是本发明实施例所提供的短消息业务具体应用实施例的示意图; 图 8是本发明实施例所提供的移动通信系统示意图。
具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合附图 对本发明实施例作进一歩地详细描述。
在 SAE/LTE、 HSPA、 HSPA+、 WiMAX等 PS域网络的初始部署阶段 为热点地区覆盖, 而 2G/3G网络在某种程度上可看作一种全覆盖。 在本发 明实施例中选用 LTE网络作为 PS域网络的实例来介绍本方案, 需要特别说 明的是, 本发明实施例中的方案依然可以适用于上述系统。
依赖于是否需要对 MSC升级以支持 MSC到 MME的语音呼叫寻呼消息 的发送, 目前的网络可以有架构 A和架构 B两种方案。
如图 1所示, 架构 A需要对 MSC升级以支持向 MME发送语音呼叫寻 呼消息。 如果 MME上不支持 BSSAP+ (Base Station System Application Part Plus, 基站系统应用部分增强) 协议和 MAP (Mobile Application Part, 移 动应用部分) 协议, 则在 MME和 MSC 间有协议转换实体 (Protocol Translator) , 该实体负责将 MME支持的 Diameter协议转换成 MSC上所支 持的 BSSAP+或 MAP协议。 BSS为基站系统, RNS为无线接入网系统。
在架构 B 中, 在 2/3G 网络和 PS 域网络间增加逻辑功能体 IWF ( Interworking Function , 网络互联功能体) , 在该架构下实现 CS Fallback, 是通过 IWF在 SAE/LTE网络内发送电路域呼叫信令, 使 UE处于 Active (激活) 状态, 进而通过 Handover过程将 UE切换到 2G/3G网络, 并建立电路域呼叫。 由于 CS域呼叫信令是在 LTE/SAE网络建立, 并且是 以切换的方式进行 CS Fallback, 所以用户对该 CS业务的选择权同传统呼叫 的选择机制略有不同, 即被叫用户接收到 Setup (建立) 消息后即可根据主 叫号码进行接受意愿的选择。
本发明实施例提供了一种语音呼叫方法, 如图 2所示, 包括以下歩骤: 在歩骤 201中, 接收来自电路域的主叫呼叫寻呼;
在歩骤 202中, 获取 CS域呼叫指示信息;
在歩骤 203 中, 如果根据所述指示信息确定所述主叫呼叫满足预定条 件, 则回退到所述电路域以进行电路域呼叫过程。
本发明实施例提供了一种语音呼叫方法, 如图 3所示, 包括以下歩骤: 在歩骤 301中, 位于分组域的用户设备在接收到来自电路域的主叫呼叫 寻呼或者进行其他呼叫建立过程时;
在歩骤 302中, 如果所述用户设备根据网络侧的指示确定该呼叫满足预 定条件;
在歩骤 303中, 回退到该电路域, 进行电路域呼叫过程。
下面介绍实施例的方法在图 1所示的网络架构中的具体应用实施例 1。 本实施例中, UE已经在 LTE网络附着, 如果 CS域用户呼叫该 UE时, 在 寻呼阶段, UE根据寻呼消息携带的信息来决定是否进行 CS Fallback 具体 如图 4所示。
在歩骤 401至 403中, MSC发送 CS Page信息给 MME, 该 CS Page信 息可以携带 CS域呼叫指示信息; 在本实施例中, CS域呼叫指示信息可以 为主叫号码或主叫类别或网络侧判断后其他可以指示 CS域呼叫的信息。
需要特别指出的是, 此 CS域呼叫指示信息用于指示来自 CS域呼叫用 户, 但, 此处并不限于是主叫号码或主叫类别, 只要能够指示主叫用户为来 自 CS域呼叫用户信息都可以作为 CS域呼叫指示信息。 本发明实施例中的 cs域呼叫指示信息, 仅仅是为描述方便而采用的名称。 这个名称不能够对 本发明实施例适用的范围进行限定, 即在某些系统中也许没有 CS域呼叫指 示信息的名称, 但是, 不能由此认为本发明实施例中的技术方案不能够适用 于这些系统。
MME接收到该 CS Page信息后通过 eNB向 UE发送 paging request (寻 呼请求) 消息。 该消息中的 CN Domain Indicator (核心网域指示) 来指示这 是来自 CS的一个寻呼, 并携带 CS域呼叫指示信息。 UE接收 paging request 消息
可选地, 如果 MME支持 BSSAP+协议, MSC直接将寻呼消息发给 MME, 否则会发到协议转换实体, 经过该实体的协议转换后发到 MME。
在歩骤 404中, UE接收到 paging request消息后, 解析出其中的 CS域 呼叫指示信息, 判断是否 CS Fallback。
比如, 如果 CS域呼叫指示信息为主叫号码, UE如需要同该主叫号码 所指示的主叫用户进行语音通话, 则决定进行 CS Fallback。
再比如, 如果 CS域呼叫指示信息为主叫类别, 如果 UE决定接受该类 别主叫用户发起的呼叫请求, 则决定进行 CS Fallback。
如果 UE决定进行 CS Fallback, 则发送接受指示给 LTE/SAE网络, LTE/SAE网络根据 UE目前的状态以及目标网络是否支持 PS业务来发起 PS 切换、 RAU (routing area update , 路由区位置更新) 或者 LAU ( location area update, 位置区位置更新) 过程来进行 CS Fallback。
如果 UE拒绝该 CS呼叫, 则发送拒绝指示给 LTE/SAE网络, MME将 回此拒绝指示给 MSC; 或者 UE不响应任何的消息, 网络侧等待寻呼响应 超时释放。 另外, 比如, UE认为该主叫号码为拒绝通话的黑名单上的用 户, 则还可以通过终端操作来屏蔽 CS呼叫的这类寻呼消息, 或者通过终端 操作给网络发送指示信令告知网络此时不给终端发这类寻呼消息。
在歩骤 405至 407中, UE接收 CS呼叫并回退到 CS域, 在该 CS域回 寻呼响应以及建立后续的呼叫信令。
本实施例中, UE可以在寻呼过程中, 根据 CS的寻呼消息中携带的 CS 域呼叫指示信息, 如主叫号码、 主叫类别, UE用户根据该信息进行选择是 否进行 CS Fallback。 使得 UE进行 CS Fallback的决定机制完全取决 UE的 自主选择, 体现了 UE是否愿意接受此呼叫的意愿。 对于可能来自 CS域的 骚扰呼叫, 使得 UE可以避免不必要的回退。 比如, 如果此时该 UE正进行 比较重要的 PS业务时, 而 CS网络又不支持 PS业务, 此时可以避免 UE牺 牲现有的 PS业务来进行 CS Fallback。
另外, 在本实施例中, 如果不考虑 UE选择权的 CS Fallback过程, 可 以通过对 eNB进行配置, 使得 eNB具备根据网络侧的指示判断是否进行 CS Fallback的能力。 具体来说, 可以是运营商配置, 或者接收 UE对网络侧 的指示。 当 eNB接收到来自 MME的 paging request消息后, 可以根据该消 息中的 CN Domain Indicator来判断这是来自 CS的寻呼, 并且根据该消息中 携带的 CS域呼叫指示信息, CS域呼叫指示信息可以为主叫号码或主叫类 别或网络侧判断后其他可以指示 CS域呼叫的信息, eNB可以停止继续下发 寻呼消息, 执行 UE切换等过程, 使得 UE进行 CS Fallback的过程。
该方案使得网络侧也具备识别来自 CS域主叫寻呼, 当 UE不参与确定 是否进行 CS Fallback时, 也可以完成 CS Fallback的确定过程。
下面介绍实施例的方法在图 1所示的网络架构中的具体应用实施例 2。 本实施例中, UE已经在 LTE网络附着, 如果 CS域用户呼叫该 UE时, UE 根据 setup消息携带的信息来决定是否进行 CS Fallback。 具体如图 5所示。
在歩骤 501至 503中, MSC发送寻呼消息给 MME, 由 MME转发给 可选地, 如果 MME支持 BSSAP+协议, MSC直接将寻呼消息发给 MME, 否则会发到协议转换实体, 经过该实体的协议转换后发到 MME。
在歩骤 504至 506 中, UE回寻呼响应消息, MME将此消息转发给 MSC。
在歩骤 507中, 为可选的鉴权、 安全过程。
在歩骤 508至 509中, MSC下发 Setup消息, 该消息中可以携带 CS域 呼叫指示信息; 在本实施例中, CS域呼叫指示信息可以为主叫号码或主叫 类别或网络侧判断后其他可以指示 CS域呼叫的信息。 MME将此消息转发 给 UE。
在歩骤 510中, UE接收到 setup消息后, 解析出其中的 CS域呼叫指示 信息, 判断是否 CS Fallback。
UE对 CS域呼叫指示信息的判断过程如歩骤 404所示, 在此不再赘 述。
在歩骤 511至 512中, UE回退到 CS域后, 在 CS域发送 call confirm (呼叫确认) 消息给 MSC, 并完成后续的 CS域呼叫信令接续过程。
本实施例与前述实施例不同在于, CS寻呼在 LTE网络中完成, 而 UE 接收到 setup消息后, 才根据 steup消息中携带的 CS域呼叫指示信息, 如主 叫号码、 主叫类别, UE用户根据该信息进行选择是否进行 CS Fallback。
下面介绍实施例的方法在图 1所示的网络架构中的具体应用实施例 3。 本实施例中, UE已经在 LTE网络附着, 如果 CS域用户呼叫该 UE时, 网 络先以 LTE短消息的形式将 CS域呼叫指示信息, 比如主叫号码或主叫类别 下发到 UE。
当 MME收到来自 MSC的寻呼消息时 (该寻呼消息携带 CS域呼叫指 示信息, 比如主叫号码或主叫类别) , 将以 LTE短消息的形式通知 UE, 用 户据此来选择是否回退到 CS, 如果 UE决定回退到 CS域, 则发送接受指示 给 LTE/SAE网络, LTE/SAE网络根据 UE目前的状态以及目标网络是否支 持 PS业务来发起 PS切换、 RAU或者 LAU过程来进行 CS Fallback。 如果 UE拒绝该 CS呼叫, 则回拒绝指示给 LTE/SAE网络, MME将回此拒绝指 示给 MSC。 UE回到 CS域网络后回 MSC寻呼响应消息。 本实施例与前述实施例不同在于, CS寻呼在 LTE网络中完成, 而 UE 接收到 LTE网络发送的 LTE消息后, 才根据该消息中携带的 CS域呼叫指 示信息, 如主叫号码、 主叫类别, UE用户根据该信息进行选择是否进行 CS Fallbacks
前述几个实施例都是基于架构 A的方案, 下面介绍本发明实施例基于 架构 B的方案。
下面介绍实施例的方法在网络架构 B中的具体应用实施例 4。 架构 B增 加逻辑功能体 IWF, 在该架构下实现 CS Fallback, 是通过 IWF在 SAE/LTE 网络内发送 CS域呼叫信令, 使 UE处于 Active状态, 进而通过 HandOver 过程将 UE切换到 2G/3G网络, 并建立电路域呼叫。 本实施例中, UE已经 在 LTE网络附着, 如果 CS域用户呼叫该 UE时, UE根据 setup消息携带 的信息来决定是否进行 CS Fallbacko 具体如图 6所示。 MT为移动台终止 的, MO为移动台初始的。
本实施例中的歩骤 601为 MSC1接收来自 MSC2的初始地址消息, 该 消息中携带着被叫用户信息。 歩骤 602至歩骤 607过程基本与图 5中类似, 不同之处在于由于架构的不同, 本实施例中的消息由 IWF转发。 歩骤 608 至歩骤 609: 建立无线接入承载。 歩骤 610: MSC1 回 MSC2地址完成消 息。 歩骤 611 : UE回退到 CS域。
在歩骤 607中, UE接收到 setup消息后, 解析出其中的 CS域呼叫指示 信息, 判断是否 CS Fallback。 UE对 CS域呼叫指示信息的判断过程如歩骤 510所示, 在此不再赘述。 如果 UE回退到 CS域后, 在 CS域发送 call confirm消息给 MSC, 并完成后续的 CS域呼叫信令接续过程。 切换完成 后, 转到第 612歩, 在目标网络的 CS域回 connect (连接) 消息。 如果 UE 拒绝, 则回拒绝指示消息给网络, LTE/SAE解析该指示消息后, 不会进行 接下来的切换处理。
本实施例效果在于, 在架构 B中, CS寻呼在 LTE网络中完成, 而 UE 接收到 setup消息后, 才根据 steup消息中携带的 CS域呼叫指示信息, 如主 叫号码、 主叫类别, UE用户根据该信息进行选择是否进行 CS Fallback 在网络中, UE已经在 LTE网络附着, 如果 UE要进行同 CS域用户的 短消息业务时, 考虑到收 /发短消息所需时间较短, 而且是通过信令的方式 进行传送, 如果 Fallback回 CS将导致不必要的开销、 而且还会增加手机电 池耗电, 可以认为收 /发短消息时没有必要将 UE Fallback到 CS:
( 1 ) 对于发送短消息, 可以直接通过 LTE/SAE 网络的 NAS ( none access signaling, 非接入层信令) 信令进行发送 s
(2) 对于接收短消息, SMS-GMSC (短消息网关) 直接将短消息路由 发到 MME上, MME寻呼用户发送短消息。
下面介绍短消息业务的实现方案的实施例。 具体如图 7所示。 VLR为 拜访位置寄存器, 用于给用户分配漫游号码。
在歩骤 701 中, SMS— SC (短消息业务中心) 发送 SM ( short message, 短消息) 到 SMS网关 (SMS-GMSC, 简称 SMS-G) 。
在歩骤 702中, SMS-G检查目标 UE的地址, 发送 Send Routeing Info For Short Message (短消息路由信息) 消息到相应的 HSS (归属用户服务 器) 进行路由查询。
在歩骤 703中, HSS检查用户的签约数据后, 如果 UE被允许接收该短 消息, 贝 ij HS S返回 Send Routeing Info For Short Message Result (短消息路由 信息结果) 消息给 SMS-G。 该消息里包含 UE当前所在的 MME、 MSC地 址。
在歩骤 704中, SMS-G与 MME之间存在 E/Gd接口时, SMS-G将短 消息发送到 MME。 如果不存在该接口, 则 SMS-G将把短消息发给 MSC, 由 MSC通过似 Gs接口发到 MME上。 其次, 如果 MME上支持 MAP协 议, 则 SMS-G直接发短消息到 MME上, 否则可发送到协议转换实体 (Protocol Translator) , 通过 Protocol Translator进行 SMS-G与 MME之间 的协议转换后发到 MME上。
在歩骤 705中, MME发送短消息到 UE。
在歩骤 706中, MME返回 Forward Short Message Result (转发短消息 结果) 消息到 SMS-G并指示短消息发送成功。 如果短消息发送失败, 且失 败的原因为寻呼无响应、 存储容量已满等临时性原因, MME将在该消息里 指示失败的原因并且在 MME上置某一位以示失败原因, SMS-GMSC接收 到该失败消息后发送短消息状态消息 (该消息中携带失败原因) 给 HSS, HSS根据此状态消息置相应的失败原因位。 如果在后续时间里, MME根据 UE给其发的消息 (如 page response (寻呼响应) , smmemory capacity available (短消息存储能力可行) ) 知道此时可达或者存储空间可用时, 会 发送短消息准备消息到 HSS以便尝试短消息的再次发送。
在歩骤 707中, SMS-G接收到 Forward Short Message Result后, 如果 该消息指示短消息成功发送, 则发 Delivery Report (传送报告) 消息给 SMS-SC。 如果上述消息指示短消息发送失败, SMS-G不会尝试发送短消息 到 MSC, 而是在其上置某一位以便后续短消息发送成功后接收来自 MME 的 Forward Short Message Result消息, 并回 SMS-SC Delivery Report (短消 息传递报告) 消息告知本次短消息发送失败等待后续继续尝试。
上面描述是对接收短消息的描述, 对于发送短消息, 与上述接收短消息 的过程类似, LTE附着的 UE首先将短消息发到 MME, MME根据消息的 指示判断该消息是短消息业务, 可以采用以下两种方式继续处理该业务:
1) MME通过 E/Gd接口将短消息发送到 SMS-GMSC, 由 SMS-GMSC 进行后续的处理。
2)如果 MME与 SMS-GMSC不存在 E/Gd接口, 则会通过似 Gs接口将 短消息发送到 MSC上, 由 MSC做后续的处理。
在此对于发送短消息的过程不再赘述。 通过本实施例可以看出, 通过本 方案, 在 PS域的 UE在同 CS域的用户进行短消息业务时, 可以根据网络 侧的指示, 通过信令的方式进行传送, 不用 Fallback回 CS, 从而减少了不 必要的开销、 而且还会减少手机电池耗电。
通过上述各实施可以实现选择性的进行 CS Fallback, 如果 UE决定进行 CS Fallback, 那么目标 CS域是 2G或者 3G的电路域网络, 决定 UE是回退 到 2G网络还是 3G网络, 可通过以下实现方案的具体实施例。
1)由网络 (如 eNB)决定优选 3G网络, g卩 UE在进行 CS Fallback时, 网 络 (:如 eNB)将 3G网络的目标小区告知 UE, UE回退到该目标小区的 CS 域。
2)网络 (如 eNB)将目标的 2G和 3G网络的相关信息告知 UE, UE根据 自己的能力以及业务支持能力来选择回退到 2G网络还是 3G网络。
3)网络 (如 eNB)根据 UE上报的能力以及自己的一些策略和网络业务支 持情况来决定 UE回退到 2G网络还是 3G网络。
4)由 UE上报邻小区的测量报告, 网络 (如 eNB)根据该测量报告以及邻 小区所支持的业务能力来决定 UE回退到 2G网络还是 3G网络。
通过上述各实施可以实现选择性的进行 CS Fallback, 如果 UE决定进行 CS Fallback, UE在 CS域结束电路域呼叫业务后, 选择是否继续驻留在 2G/3G电路域还是返回到 PS域网络, 可采用以下方案:
1;)在目标的电路域网络设置一个定时器, 如果在定时器超时前, UE都 没有发起一个新的 CS域业务, 则网络指示 UE返回到 LTE网络, 定时器的 时长可根据运营商自己的情况设置。 如果定时器的时间为零, 则意味着 UE 在结束 CS域业务后立刻回到 LTE网络。
2) UE选择接下来将驻留在哪个网络, 如果 UE没有进行任何操作, 则 意味着仍然继续停留在 CS域, 如果 UE设置发起一个 TAU的过程, 则意味 着将要驻留在 PS域网络。
下面介绍本发明实施例涉及的移动通讯系统实施例, 可以理解地是, 本 发明实施例中的该系统还可以包含实现通信功能的其他众多实体, 对于其他 现有技术中可能揭示的技术属于通信领域内已规范化的技术, 本实施例中不 再赘述细节; 但是为了介绍本发明实施例中的实现方案, 这里仅指出了该系 统中主要部分。 请参阅图 8, 该系统包括: 包含网络侧 8100 和终端侧 8200, 其中, 终端侧 8200, 可以包含:
用户设备 8210, 用于在处理来自电路域的主叫呼叫时, 如果所述用户 设备根据网络侧的指示确定该呼叫满足预定条件, 则回退到该电路域, 进行 电路域呼叫过程。
具体地, 用户设备 8210包含:
接收单元 8211, 用于处理来自电路域的主叫呼叫;
判断单元 8212, 用于根据接收到的消息所携带的网络侧指示, 判断该 呼叫是否满足预定条件;
处理单元 8213, 用于在判断单元确定进行呼叫时, 回退到电路域, 进 行电路域呼叫过程。
其中, 预定条件为以下之一或其任意组合: 所述用户设备需要同主叫号 码所指示的主叫用户进行电路域业务; 所述用户设备需要同主叫类别所指示 的该类别用户进行电路域业务。
网络侧 8100其中可包含网络侧设备 8110:
寻呼单元 8112, 用于向位于分组域的用户设备发送主叫呼叫寻呼消息 或呼叫建立消息;
呼叫单元 8113, 用于在寻呼单元寻呼的用户设备回退到电路域后, 进 行呼叫过程。
还包含:
信息处理单元 8111, 用于在寻呼单元发送的主叫呼叫寻呼消息或呼叫 建立消息中, 添加主叫号码或主叫类别的网络侧指示。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分歩骤 是可以通过程序来指令相关的硬件完成, 所述的程序可以存储于一种计算机 可读存储介质中, 该程序在执行时, 包括如下歩骤: 位于分组域的用户设备 在接收到来自电路域的主叫呼叫寻呼或者进行其他呼叫建立过程时, 如果所 述用户设备根据网络侧的指示确定该呼叫满足预定条件时, 则回退到该电路 域, 进行电路域呼叫过程。 其中预定条件为以下之一或其任意组合: 所述用 户设备需要同主叫号码所指示的主叫用户进行电路域业务; 所述用户设备需 要同主叫类别所指示的该类别用户进行电路域业务。 上述提到的存储介质可 以是只读存储器, 磁盘或光盘等。
虽然通过参照本发明的某些优选实施例, 已经对本发明进行了图示和描 述, 但本领域的普通技术人员应该明白, 可以在形式上和细节上对其作各种 改变, 而不偏离本发明的精神和范围。

Claims

权利要求书
1 . 一种分组域用户处理电路域业务的方法, 其特征在于, 所述方法包 含以下歩骤:
接收来自电路域的主叫呼叫寻呼;
获取电路域 CS域呼叫指示信息;
如果根据所述指示信息确定所述主叫呼叫满足预定条件, 则回退到所述 电路域以进行电路域呼叫过程。
2.根据权利要求 1所述的分组域用户处理电路域业务的方法, 其特征在 于, 当所述 CS域呼叫指示信息为主叫号码和或主叫类别时, 所述预定条件 为以下之一或其任意组合:
需要同主叫号码所指示的主叫用户进行电路域业务;
需要同主叫类别所指示的主叫用户进行电路域业务。
3.根据权利要求 1所述的分组域用户处理电路域业务的方法, 其特征在 于, 所述获取 CS域呼叫指示信息, 具体为:
所述主叫呼叫寻呼携带 CS域呼叫指示信息, 从所述主叫呼叫寻呼获取 所述 CS域呼叫指示信息。
4.根据权利要求 1所述的分组域用户处理电路域业务的方法, 其特征在 于, 所述获取 CS域呼叫指示信息, 具体为:
接收来自电路域的主叫呼叫寻呼之后, 接收来自所述电路域的呼叫建立 消息, 所述呼叫建立消息携带所述获取 CS域呼叫指示信息; 从所述呼叫建 立消息获取所述获取 CS域呼叫指示信息。
5.根据权利要求 1至 4中任一项所述的分组域用户处理电路域业务的方 法, 其特征在于, 回退到所述电路域以进行电路域呼叫过程, 具体为: 发送接收指示给分组域网络侧, 所述分组域网络侧根据所述用户设备当 前的状态及所述电路域网络是否支持分组域业务, 发起分组域切换、 或路由 区位置更新、 或位置区位置更新, 以进行电路域回退。
6.根据权利要求 1至 4中任一项所述的分组域用户处理电路域业务的方 法, 其特征在于, 回退到所述电路域以进行电路域呼叫过程, 之后还包括: 发送寻呼相应给给所述电路域。
7.根据权利要求 5中所述的分组域用户处理电路域业务的方法, 其特征 在于, 通过以下方式之一选择回退到 2G或 3G的电路域:
用户设备接收由所述分组域网络侧发送的 2G或 3G电路域的目标小区 信息后, 所述用户设备回退到所述目标小区的 2G或 3G电路域;
用户设备接收由所述分组域网络侧发送的 2G或 3G电路域网络的信息 后, 所述用户设备选择回退到所述 2G或 3G电路域;
由所述分组域网络侧根据所述用户设备上报的能力信息, 结合自身配置 策略和网络业务支持状况决定所述用户设备回退到所述 2G或 3G电路域; 用户设备上报邻小区的测量报告, 所述分组域网络侧根据该测量报告以 及邻小区支持的业务能力来决定所述用户设备回退到所述 2G或 3G 电路 域。
8.根据权利要求 1至 4中任一项所述的分组域用户处理电路域业务的方 法, 其特征在于, 所述用户设备完成所述电路域呼叫之后, 驻留所述电路域 或者返回所述分组域。
9.根据权利要求 8所述的分组域用户处理电路域业务的方法, 其特征在 于, 所述驻留所述电路域或者返回所述分组域, 具体为:
所述电路域的网络侧在预定时间结束之后, 指示所述用户设备返回所述 分组域; 或者,
所述用户设备根据自身需求, 选择驻留所述电路域或者返回所述分组 域。
10.根据权利要求 1所述的分组域用户处理电路域业务的方法, 其特征 在于,
如果根据所述指示信息确定所述主叫呼叫不满足预定条件, 则禁止同所 述主叫用户进行电路域业务, 屏蔽所述主叫用户的呼叫或发送拒绝指示给网 络侧。
11. 一种分组域用户处理短消息业务的方法, 其特征在于, 所述方法包 含以下歩骤:
位于分组域的用户设备在同位于电路域的用户设备进行短消息业务时, 所述用户设备确定不回退到电路域, 在分组域网络侧内通过信令方式进行所 述短消息业务。
12.根据权利要求 11所述的分组域用户处理短消息业务的方法, 其特征 在于, 位于分组域的用户设备在同位于电路域的用户设备进行短消息业务 时, 具体为:
当位于分组域的用户设备向位于电路域的用户设备发送短消息时, 所述 分组域的用户设备将所述短消息通过非接入层 NAS信令发送至移动管理实 体。
13.根据权利要求 12所述的分组域用户处理短消息业务的方法, 其特征 在于, 还包括:
如果移动管理实体与短消息网关之间存在 E/Gd接口, 所述移动管理实 体将所述短消息发送到所述短消息网关上;
如果不存在所述 E/Gd接口, 则所述移动管理实体将通过似 Gs接口将 短消息发送给移动交换中心, 由所述移动交换中心发送到所述短消息网关 ± o
14.根据权利要求 11所述的分组域用户处理短消息业务的方法, 其特征 在于, 位于分组域的用户设备在同位于电路域的用户设备进行短消息业务 时, 具体为:
当位于分组域的用户设备接收来自位于电路域的用户设备发送短消息 时, 所述分组域的用户设备通过移动管理实体接收所述电路域的短消息业务 网关发送的所述短消息。
15.根据权利要求 14所述的分组域用户处理短消息业务的方法, 其特征 在于, 还包括:
如果短消息网关与移动管理实体之间存在 E/Gd接口, 所述短消息网关 将短消息发送到所述移动管理实体上;
如果不存在所述 E/Gd接口, 所述短消息网关将把短消息发送给所述移 动交换中心, 由所述移动交换中心通过似 Gs接口发到所述移动管理实体 上。
16.—种用户设备, 其特征在于, 包含:
接收单元, 用于处理来自电路域的主叫呼叫;
判断单元, 用于根据接收到的消息所携带的网络侧指示, 判断该呼叫是 否满足预定条件;
处理单元, 用于在判断单元确定进行呼叫时, 回退到电路域, 进行电路 域呼叫过程。
17.根据权利要求 16所述的用户设备, 其特征在于, 所述预定条件为以 下之一或其任意组合:
所述用户设备需要同主叫号码所指示的主叫用户进行电路域业务; 所述用户设备需要同主叫类别所指示的该类别用户进行电路域业务。
18.一种移动通信系统, 包含网络侧和终端侧, 其特征在于, 所述终端 侧包含:
用户设备, 用于在处理来自电路域的主叫呼叫时, 如果所述用户设备根 据网络侧的指示确定该呼叫满足预定条件, 则回退到该电路域, 进行电路域 呼叫过程。
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