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WO2009097811A1 - Procédé, dispositif et système permettant à des utilisateurs dans un domaine ps de traiter avec des services dans un domaine cs - Google Patents

Procédé, dispositif et système permettant à des utilisateurs dans un domaine ps de traiter avec des services dans un domaine cs 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)
Chinese (zh)
Inventor
Wei Guo
Xiaoqin Duan
Jian Zhang
Qingyu Li
Xiaobo Wu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009097811A1 publication Critical patent/WO2009097811A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation 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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Abstract

L'invention porte sur un procédé, un dispositif et un système permettant à des utilisateurs dans un domaine à commutation de paquets (PS) de traiter des services dans un domaine à commutation de circuits (CS), qui peuvent amener des utilisateurs à choisir indépendamment si un repli CS est effectué ou non. Un signal d'appel de mobile provenant du domaine CS est reçu (201) ; des informations d'indication d'appel du domaine CS sont obtenues (202) ; sur la base des informations d'indication, si les utilisateurs dans le domaine PS déterminent que l'appel satisfait une condition prédéterminée, un repli vers le domaine CS est effectué afin d'exécuter une procédure d'appel du domaine CS (203). La présente invention porte également sur un équipement utilisateur (UE) et sur un système de communication mobile. La présente invention peut amener l'équipement utilisateur à exécuter un repli CS indépendamment, et réaliser le désir du fait que l'utilisateur souhaiterait accepter la réalisation d'un appel ou non. Pour un appel importun provenant du domaine CS éventuellement, l'équipement utilisateur peut éviter le repli non nécessaire.
PCT/CN2009/070302 2008-02-01 2009-01-23 Procédé, dispositif et système permettant à des utilisateurs dans un domaine ps de traiter avec des services dans un domaine cs WO2009097811A1 (fr)

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