CN106658714B - Paging strategy control method, equipment and service gateway based on paging source - Google Patents

Abstract

The present disclosure relates to a paging control method, device and service gateway. The method includes: receiving a request message from a Session Border Controller (SBC) from an IP Multimedia Subsystem (IMS); notifying a certain part of signaling of downlink data The field is set to TRUE; after the Mobility Management Entity (MME) receives the downlink data notification signaling, it determines whether the request message is a VOLTE service request or an ordinary PS paging according to the field of the downlink data notification signaling , and deal with it accordingly.

Description

Paging source-based paging policy control method, device and service gateway

technical field

The present application relates to the field of communication technologies, and in particular, to a paging policy control method, device and serving gateway.

Background technique

Paging is an action performed when the network wishes to communicate with a mobile terminal, and the network can send a page to a user equipment (User Equipment, UE) in an idle state or a connected state. The network sends messages on the paging channel according to certain rules, and the mobile terminal interprets the paging channel according to certain rules to check whether there is a paging for itself. The paging process can be triggered by the core network to notify a certain UE to receive a paging request, or triggered by an eNodeB (eNB) to notify the system update and notify the UE to receive information.

In a general situation, as shown in Figure 1, in an LTE network, paging is a mobility management entity (Mobility Management Entity, MME) sending paging information to a UE in RRC_IDLE mode, and this paging process is an S1 interface process . The MME initiates the paging procedure by sending a paging message to the eNB.

VOLTE is Voice Over LTE, which is a voice service based on IMS (IP Multimedia Subsystem). In Figure 2, a schematic diagram of an IMS-based VOLTE architecture is shown.

VOLTE belongs to an IP data transmission technology, which is built on the LTE network and is an "end-to-end" voice solution. VOLTE does not need 2G/3G network, and all its services are carried on 4G network, which can realize the unification of data and voice services under the same network. In other words, 4G network can not only provide high-speed data services, but also provide high-quality audio or video calls through VOLTE technology. VOLTE is the target solution for Voice over LTE.

There are two different types of paging in the VOLTE network:

1. Paging of ordinary packet switching (Packet Switch, PS) data services

When the serving gateway (Serving GW, SGW) receives the downlink data sent by the paging gateway (Paging GW, PGW) to the UE in the idle state, the SGW sends a downlink data notification message to the MME, and triggers the MME to send the UE to the UE. Send a paging message.

As shown in Figure 3, the paging process specifically includes the following steps:

a) The SGW receives a downlink data packet sent to the idle state UE and buffers it;

b) SGW sends a downlink data notification to MME;

c) The MME sends a paging message to the eNodeB under the Tracking Area (TA);

d) the eNodeB pages the UE;

e) Execute the service request procedure triggered by the UE, and establish the downlink.

2. Paging of VOLTE service

In Fig. 4, the flow chart of VOLTE business is shown, and this specific flow is as follows:

a) The LTE user initiates a call;

b) Multimedia Telephone Application Server (MMTelAS) performs calling service processing;

c) After completing the calling service processing, the MMTel AS routes the call back to the S-CSCF; the S-CSCF queries the telephone number mapping (E.164Number URI Mapping, ENUM), and routes the call to the called party;

d) On the called side, the call is routed to the I-CSCF that provides services to the called user, and the I-CSCF sends a call request to the S-CSCF;

e) After the MMTel AS performs the called service processing, the MMTel AS routes the call back to the S-CSCF;

f) the S-CSCF connects the call request to the called user through the Proxy Call Session Control Function (P-CSCF);

g) Bearer establishment.

In an LTE network, paging strategies generally include the following types:

a) Paging range: such as single Tracking Area Code (TAC) paging, multi-TAC paging, single eNodeB paging, etc.;

b) Paging times (N3413), paging interval time (T3413), etc.;

c) paging number: such as International Mobile Subscriber Identification Number (IMSI) paging, S-IMSI paging;

d) Paging priority.

However, in the existing MME paging processing mechanism, normal PS paging and VOLTE paging cannot be processed separately, and the two use the same paging strategy.

At present, in the VOLTE network, it takes a long time for a call to be established because the paging mechanism is not suitable for voice services. The reasons are as follows:

1) MME cannot distinguish between PS paging triggered by ordinary data services and PS paging triggered by VOLTE;

2) The paging interval is long, resulting in a long time delay for the called party to receive the paging.

In addition, the paging response times of the VOLTE service and the ordinary data service are inconsistent, and it is impossible to distinguish the settings of the paging interval by using the same policy for the two services.

Compared with the PS service, the voice service requires higher network reliability; if the paging strategy of the voice service and the data service cannot be distinguished, it will not be possible to optimize the call completion rate of the voice service.

In view of the above-mentioned problems in the prior art, it is necessary to propose a new paging policy control method and system to treat the paging mechanisms of voice and data differently.

SUMMARY OF THE INVENTION

In order to solve one or more of the above problems, the present application provides a paging policy control method, including: receiving a request message from a session border controller (SBC) from an IP Multimedia Subsystem (IMS); notifying downlink data A field of signaling is set to TRUE.

According to another aspect of the present invention, a paging policy control method is provided, the method further comprising: after a mobility management entity (MME) receives the downlink data notification signaling, according to the downlink data notification signaling The field of , judges whether the request message is a VOLTE service request.

According to another aspect of the present invention, a paging policy control method is provided, wherein: if the field of the downlink data notification signaling is TRUE, it is determined that the request message is a VOLTE service request, and the request The messages are listed in the VOLTE stack and the corresponding paging strategy is applied.

According to another aspect of the present invention, a paging policy control method is provided, wherein: if the field of the downlink data notification signaling is not TRUE, it is judged that the request message is a normal PS service paging, and Apply the appropriate paging policy.

According to another aspect of the present invention, there is provided a paging control device, comprising: a receiving module for receiving a request message from a Session Border Controller (SBC) from an IP Multimedia Subsystem (IMS); a setting module for Set a field of downlink data notification signaling to TRUE.

According to another aspect of the present invention, a paging control device is provided, and the device further includes: a judgment module, configured to, after a mobility management entity (MME) receives the downlink data notification signaling, determine according to the downlink data notification signaling. The field of the data notification signaling determines whether the request message is a VOLTE service request.

According to another aspect of the present invention, a paging control device is provided, the device further includes: a paging policy application module, configured to include the request message in the VOLTE when the request message is a VOLTE service request stack and apply the corresponding paging policy.

According to another aspect of the present invention, a paging control device is provided, wherein: the paging policy application module is further configured to apply a corresponding paging policy when the request message is a common service paging.

According to another aspect of the present invention, a paging control device is provided, wherein: the judgment module judges whether the request message is a VOLTE service request according to whether the field is TRUE.

According to another aspect of the present invention, there is provided a serving gateway for controlling a paging policy, the serving gateway comprising: a processor; and a memory; wherein the processor is configured to: The Session Border Controller (SBC) of the Multimedia Subsystem (IMS) receives the request message and sets a certain field of the downlink data notification signaling to TRUE.

According to another aspect of the present invention, a serving gateway is provided, and the serving gateway further includes: the processor is further configured to, after the mobility management entity (MME) receives the downlink data notification signaling, according to the The field of the downlink data notification signaling determines whether the request message is a VOLTE service request.

According to another aspect of the present invention, a service gateway is provided, the service gateway further comprising: the processor is further configured to include the request message in a VOLTE stack when the request message is a VOLTE service request and apply the corresponding paging policy.

According to another aspect of the present invention, a service gateway is provided, the service gateway further comprising: the processor is further configured to apply a corresponding paging policy when the request message is a common service paging.

According to another aspect of the present invention, a service gateway is provided, wherein: the processor determines whether the request message is a VOLTE service request according to whether the field is TRUE.

Through the technical solution proposed in the present application, it is possible to simply judge whether the request message corresponds to the VOLTE paging request through the downlink data notification message, so that a separate paging strategy is applied for VOLTE paging at the mobility management entity.

Description of drawings

The above and other aspects of the present invention will become apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings, wherein:

1 is a schematic diagram illustrating LTE network paging;

Fig. 2 is the schematic diagram showing the VOLTE framework based on IMS;

3 is a schematic diagram showing a service request flow triggered by a network;

Figure 4 is a schematic diagram illustrating a VOLTE process flow according to at least one embodiment of the present invention;

5 is a schematic diagram showing a called process of VOLTE according to at least one embodiment of the present invention;

6 is a schematic diagram illustrating a paging flow of VOLTE according to at least one embodiment of the present invention;

FIG. 7 is a flow chart illustrating a paging source-based paging policy control method according to at least one embodiment of the present invention;

8 is a block diagram showing the structure of a service gateway according to at least one embodiment of the present invention;

FIG. 9 is a block diagram showing the structure of a service gateway according to at least one embodiment of the present invention.

Detailed ways

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention. The present invention is in no way limited to any specific configurations and algorithms set forth below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

According to some embodiments of the present invention, a paging policy control method based on a paging source is proposed, and the method is improved based on the paging flow of the current MME. The steps of the method are shown in FIG. 6 .

In this method, although the paging process of VOLTE is relatively complicated inside the IMS, after the SIP INVITE message reaches the paging gateway (PGW), the signaling process shown in the block in FIG. The process is exactly the same as normal PS paging.

Figure 6 shows a diagram of a paging process for VOLTE, according to one embodiment. It should be noted that this diagram is only an example, which should not unduly limit the scope of the claims. Those skilled in the art can make adaptive changes, substitutions and modifications on the basis of this figure.

As shown in Figure 6, the process includes the following steps:

1. When the Serving Gateway (SGW) receives the downlink data packet sent to the UE, and the UE's user plane connection has not been established (that is, the S-GW context number indicates that there is no downlink user plane TEID), the S-GW is in the Cache this part of the data packet locally, and identify the MME corresponding to the UE;

2. The SGW sends a (Downlink Data Notification) message to the MME, which has established a control plane connection with the UE corresponding to the downlink data;

3. The MME returns a Downlink Data Notification Acknowledge message to the SGW;

4. The MME sends a paging message to each eNodeB in the TA registered by the UE;

5. If the UE is ECM-IDLE in the middle, it will initiate a UE triggered service request (UE triggered Service Request) process after receiving the paging message accessed by the E-UTRAN. If the MME has established a signaling connection with the UE through S1-MME, the messages will be executed sequentially when the MME bearer is established;

6. The MME manages the paging process through a timer. If the UE never responds to the paging request message, the MME retransmits the paging message.

Comparing the normal PS data service with the VOLTE paging process, it can be seen that, different from the PS normal data service, the VOLTE paging request comes from the Session Border Controller (SBC) entity of the IMS. Therefore, different paging can be differentiated in a targeted manner according to the paging source of the service, which will ensure the reliability and stability of the voice paging.

The signaling of the downlink data notification sent by the SGW to the MME, the analysis content of the signaling is shown in the following figure:

In the signaling, a field or information element (Information Element) "IMS" may be added, and the field or information element IMS is used to indicate whether the service is paging for VOLTE. This field is true if the service is paging for VOLTE. At this point, the paging message is prioritized in the VOLTE stack and an individual paging policy is applied to it.

FIG. 7 shows a flowchart of a method 700 for determining whether the request is a VOLTE service paging by using an "IMS" element, according to an embodiment. This flowchart is merely an example, which should not unduly limit the scope of the claims. Those skilled in the art can make adaptive changes, substitutions and modifications on the basis of this figure. Although P/SGW (Paging/Serving Gateway), SBC, MME, etc. are used as examples of communication entities in the following description, those skilled in the art can understand that the method can also be used for various other communication entities.

As shown in Figure 7, the steps involved in this process are as follows.

In step 710, the P/SGW receives a request message from the Session Border Controller (SBC) of the IMS. It can be seen from the previous description that the request message is used for the VOLTE service.

In step 720, the P/SG sets the "IMS" element of the downlink data notification signaling to TRUE.

In step 730, the MME receives the downlink data notification signaling and checks the "IMS" bit of the downlink data notification signaling.

In step 740, if the IMS bit is TRUE, the MME enqueues the request in the VOLTE stack and applies the corresponding paging policy.

In step 750, if the IMS bit is not TRUE, the MME pages the request as a normal PS service and applies the corresponding paging policy.

Through the technical solutions proposed above, it is possible to easily determine whether the request message corresponds to the VOLTE paging request through the downlink data notification message, so that a separate paging strategy is applied at the mobility management entity for VOLTE paging.

For common PS paging and VOLTE paging, the recommended paging strategies are shown in the table below.

paging strategy Normal PS paging VOLTE paging paging range smaller larger number of pages less more paging interval larger smaller paging priority lower higher

As shown in the above table, the paging application of VOLTE is more suitable for the paging strategy of voice service, such as smaller paging interval, larger paging times and higher paging priority.

In FIG. 8, a block diagram of a Serving Gateway (SGW) is disclosed, which can be used for policy control of VOLTE paging services. This block diagram is merely an example, which should not unduly limit the scope of the claims. Those skilled in the art can make adaptive changes, substitutions and modifications on the basis of this figure.

As shown in FIG. 8 , the service gateway includes a receiving module 810 , a judging module 820 , a setting module 830 and a paging policy application module 840 .

The receiving module 810 is configured to receive a request message for paging service. As an example, the request message may be paging for normal PS service or VOLTE service. If the request message comes from the Session Border Controller (SBC) of the IMS, it can be seen from the previous description that the request message is used for the VOLTE service.

The judging module 820 is configured to judge whether the request message is used for the VOLTE service.

The setting module 830 is configured to set the "IMS" bit of the request message according to the judgment result of the judgment module 820 . If the request message is for the VOLTE service, change the "IMS" bit to TRUE; otherwise, make no change to the "IMS" element, or change it to "FALSE".

The paging policy application module 840 is configured to apply different paging policies according to the type of the request message. If the request message is used for the VOLTE service, the request message is included in the VOLTE stack, and the corresponding paging strategy is applied; otherwise, the request message is determined to be used for ordinary PS service paging, and the corresponding paging policy is applied. Strategy.

Through the technical solutions proposed above, it is possible to easily determine whether the request message corresponds to the VOLTE paging request through the downlink data notification message, so that a separate paging strategy is applied at the mobility management entity for VOLTE paging.

FIG. 9 is a block diagram of a Serving Gateway (SGW) 900 for controlling a paging policy, according to an exemplary embodiment. Within the service gateway 900, a set of instructions or series of instructions may be executed to cause the service gateway to perform any of the methods discussed herein, according to example embodiments. In alternative embodiments, the service gateway operates as a stand-alone device or may be connected (eg, networked) to other devices. In a networked deployment, the service gateway may be enabled in the capabilities of a service gateway or client device in a service gateway-client network environment, or it may operate as a peer device in a peer-to-peer (or distributed) network environment. The serving gateway may be a mobile communication device (eg, a cellular phone), a computer, a personal computer (PC), a tablet PC, a hybrid tablet, a personal digital assistant (PDA), or any device capable of executing instructions (either sequentially or otherwise). ), which specifies the action to be taken by the serving gateway. Furthermore, when only a single device is described, the term "device" should also be taken to include any collection of devices that, individually or jointly, execute a set (or sets) of instructions to perform one or more of the methods discussed herein. Similarly, the term "processor-based system" should be considered to include any collection of one or more devices that are operated or managed by a processor (eg, a computer) to perform, alone or in combination, any one or more of the devices discussed herein. a method.

9, the service gateway 900 may include one or more of the following components: a processing component 902, a memory 904, a power supply component 906, a multimedia component 908, an audio component 910, an input/output (I/O) interface 912, a sensor component 914, And the communication component 916 .

The processing component 902 generally controls the overall operations of the services gateway 900, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 902 may include one or more processors 920 to execute instructions to perform all or some of the steps of the methods described above. Additionally, processing component 902 may include one or more modules to facilitate interaction between processing component 902 and other components. For example, processing component 902 may include a multimedia module to facilitate interaction between multimedia component 908 and processing component 902.

Memory 904 is configured to store various types of data to support operations at service gateway 900 . Examples of such data include instructions for any application or method operating on service gateway 900, contact data, phonebook data, messages, pictures, videos, and the like. Memory 904 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

Power component 906 provides power to the various components of services gateway 900 . Power components 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to services gateway 900 .

Multimedia component 908 includes screens that provide an output interface between the service gateway 900 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect the duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 908 includes a front-facing camera and/or a rear-facing camera. When the service gateway 900 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.

Audio component 910 is configured to output and/or input audio signals. For example, the audio component 910 includes a microphone (MIC, which is configured to receive external audio signals when the services gateway 900 is in operating modes, such as call mode, recording mode, and speech recognition mode. The received audio signals may be further stored in The memory 904 is either sent via the communication component 916. In some embodiments, the audio component 910 also includes a speaker for outputting audio signals.

The I/O interface 912 provides an interface between the processing component 902 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.

Sensor component 914 includes one or more sensors for providing service gateway 900 with status assessments of various aspects. For example, the sensor component 914 can detect the open/closed state of the service gateway 900, the relative positioning of the components, such as the display and keypad of the service gateway 900, the sensor component 914 can also detect the service gateway 900 or a service gateway 900 The location of components changes, the presence or absence of user contact with the service gateway 900, the service gateway 900 orientation or acceleration/deceleration, and the temperature of the service gateway 900 changes. Sensor assembly 914 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 916 is configured to facilitate wired or wireless communications between services gateway 900 and other devices. Serving gateway 900 can access wireless networks based on communication standards, such as WiFi, 2G or 9G, or a combination thereof. In one exemplary embodiment, the communication component 916 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, service gateway 900 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A programmed gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory 904 including instructions, executable by the processor 920 of the service gateway 900 to perform the above method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

The preferred embodiments of the present invention have been described above, however, the embodiments are exemplary only, and are not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents.

Furthermore, although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims; The scope of the invention is not limited to the embodiments of the systems, methods and steps described in this specification. As one of ordinary skill in the present invention should understand, through the present invention, existing or future developed methods and steps for carrying out substantially the same manner or obtaining substantially the same results as the technical solutions employed in accordance with the present invention may be implemented in accordance with the present invention. use.

Claims (3)

1. A paging policy control method, comprising:

receiving a request message from a Session Border Controller (SBC) from an IP Multimedia Subsystem (IMS);

setting a certain field of the downlink data notification signaling as TRUE;

after a Mobility Management Entity (MME) receives the downlink data notification signaling, judging whether the request message is a VOLTE service request according to the field of the downlink data notification signaling;

wherein:

if the field of the downlink data notification signaling is TRUE, judging that the request message is a VOLTE service request, listing the request message in a VOLTE stack and applying a corresponding paging strategy;

if the field of the downlink data notification signaling is not TRUE, judging that the request message is ordinary PS service paging, and applying a corresponding paging strategy;

wherein the paging strategy comprises: the MME manages the paging process through a timer, and if the UE does not respond to the paging request message all the time, the MME retransmits the paging message.

2. A paging control apparatus, comprising:

a receiving module for receiving a request message from a Session Border Controller (SBC) from an IP Multimedia Subsystem (IMS);

a setting module, configured to set a certain field of the downlink data notification signaling to TRUE;

a judging module, configured to, after a Mobility Management Entity (MME) receives the downlink data notification signaling, judge whether the request message is a VOLTE service request according to the field of the downlink data notification signaling; wherein: the judging module judges whether the request message is a VOLTE service request according to whether the field is TRUE;

a paging strategy application module, configured to, when the request message is a VOLTE service request, list the request message in a VOLTE stack and apply a corresponding paging strategy;

wherein:

the paging strategy application module is also used for applying a corresponding paging strategy when the request message is a common service paging;

wherein the paging strategy comprises: the MME manages the paging process through a timer, and if the UE does not respond to the paging request message all the time, the MME retransmits the paging message.

3. A serving gateway for controlling paging policies, the serving gateway comprising:

a processor; and

a memory;

wherein the processor is configured to: receiving a request message from a Session Border Controller (SBC) from an IP Multimedia Subsystem (IMS); setting a certain field of the downlink data notification signaling as TRUE;

the processor is further configured to determine whether the request message is a VOLTE service request according to the field of the downlink data notification signaling after a Mobility Management Entity (MME) receives the downlink data notification signaling; wherein: the processor determines whether the request message is a VOLTE service request according to whether the field is TRUE;

the processor is further configured to, when the request message is a VOLTE service request, list the request message in a VOLTE stack and apply a corresponding paging policy;

the processor is further configured to apply a corresponding paging policy when the request message is a normal traffic page; wherein the paging strategy comprises: the MME manages the paging process through a timer, and if the UE does not respond to the paging request message all the time, the MME retransmits the paging message.

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