CN113490274B - Downlink data paging method, SGW, electronic equipment and medium - Google Patents
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- H—ELECTRICITY
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Abstract
The present disclosure provides a downlink data paging method, an SGW, an electronic device, and a computer-readable storage medium, where the method includes: the SGW receives a request for modifying the bearer context sent by the SGSN or the MME, wherein the request comprises an ISR activation indication; modifying the bearing context according to the request, saving an ISR activation instruction, and starting a timer; when the mobile terminal has a downlink data service, judging whether the ISR is in an activated state according to the ISR activation indication and judging whether the timer is overtime; if not, sending a data service paging request to the SGSN or the MME according to the network element sending the request for modifying the bearer context; and if the paging does not respond, sending a paging request to another network element in the MME or SGSN. The technical scheme of the disclosure can reduce unnecessary paging, and can ensure successful paging while avoiding unnecessary signaling overhead.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a downlink data paging method, an SGW, an electronic device, and a computer-readable storage medium.
Background
In an EPS (Evolved Packet System), in order to reduce air interface Signaling between the UE and the core network, an Idle mode Signaling Reduction (ISR) function is introduced. After the function is activated, the UE may be registered to an MME (Mobility Management Entity) and an SGSN (Serving GPRS Support Node) at the same time. Thus, when the UE moves under two different Access networks, the UE does not initiate a RAU (Routing Area Update) or a TAU (Tracking Area Update) of an inter RAT (Radio Access Technology), thereby reducing unnecessary signaling.
At present, a mobile terminal with ISR capability performs a joint attachment in a 4G network, at this time, ISR is not activated, when the mobile terminal moves to the edge of a 4G network coverage and within an 2/3G network coverage, through signaling interaction of SGSN, MME and SGW (Serving gateway), SGSN sends RAU acceptance information to the mobile terminal, where the RAU acceptance information includes an ISR activation instruction, and the mobile terminal activates ISR; or, the mobile terminal is first located in the 2/3G network, and attaches to the 2/3G network, at this time, ISR is not activated, and when the mobile terminal moves to the 4G network coverage area, the MME sends TAU accept information to the mobile terminal through signaling interaction of the MME, the SGSN, and the SGW, where the TAU accept information includes ISR activation instruction, and the mobile terminal activates ISR; under the two conditions, when the mobile terminal has a downlink data service at this time, the SGW determines that the ISR is in an active state, and sends a data service paging request to the MME and the SGSN at the same time, so that the MME and the SGSN page within a TAI (Tracking Area Identity) list and a RAI (Routing Area Identity) respectively, which wastes air interface resources.
Disclosure of Invention
The present disclosure provides a downlink data paging method, an SGW, an electronic device, and a computer-readable storage medium, which can notify an MME or an SGSN by the SGW to perform paging according to a situation of a terminal, thereby reducing unnecessary paging and avoiding unnecessary signaling overhead.
In a first aspect, an embodiment of the present disclosure provides a downlink data paging method, which is applied to a serving gateway SGW, and the method includes:
receiving a request for modifying the bearer context sent by a network element SGSN or a network element MME, wherein the request comprises an ISR activation instruction;
modifying the bearer context and saving an ISR activation indication based on the request for modifying the bearer context, and starting a timer;
when the mobile terminal has a downlink data service, judging that the ISR of the mobile terminal is in an activated state according to the stored ISR activation indication, and judging whether the timer exceeds a preset time or not;
if the timer does not exceed the preset time, sending a data service paging request to the SGSN or the MME according to the network element sending the request for modifying the bearer context; and the number of the first and second groups,
and if the paging does not respond, sending a paging request to another network element in the MME or the SGSN.
Further, the method further comprises:
and if the timer exceeds the preset time, sending a data service paging request to both the MME and the SGSN so that the MME and the SGSN respectively perform paging in the TAI list range and the RAI range.
Further, the method further comprises:
if the mobile terminal is in the range of the 4G network after being powered on, the attachment process of the 4G multi-mode card is started and the ISR is not activated, when the mobile terminal moves to the edge of the coverage range of the 4G network and the coverage range of the 2/3G network and the mobile terminal resides in the 2/3G network, the SGW receives a request sent by the SGSN for modifying the bearer context.
Further, the method further comprises:
if the mobile terminal is in the range of the 2/3G network, attaches to the 2/3G network, and does not activate ISR, the SGW receives a request sent by the MME to modify the bearer context when the mobile terminal moves into 4G network coverage and the mobile terminal camps on the 4G network.
In a second aspect, an embodiment of the present disclosure provides a serving gateway SGW, where the SGW has a timer, and the SGW further includes:
a receiving module, configured to receive a request for modifying a bearer context sent by a network element SGSN or MME, where the request includes an ISR activation indication;
a processing module configured to modify the bearer context and store an ISR activation indication, while starting a timer;
the judging module is set to judge that the ISR of the mobile terminal is in an activated state according to the stored ISR activation indication when the mobile terminal has downlink data service, and judge whether the timer exceeds the preset time;
a sending module configured to send a data service paging request to the SGSN or MME according to the network element that sent the request to modify the bearer context if the determining module determines that the timer does not exceed a preset time, and,
and if the paging does not respond, sending a paging request to another network element in the MME or the SGSN.
Further, the sending module is further configured to:
if the judging module judges that the timer exceeds the preset time, a data service paging request is sent to the MME and the SGSN so that the MME and the SGSN can page in the TAI list range and the RAI range respectively.
Further, the receiving module is specifically configured to:
if the mobile terminal is in the range of the 4G network after being started, the attachment process of the 4G multi-mode card is started and the ISR is not activated, and then when the mobile terminal moves to the edge of the coverage range of the 4G network and the coverage range of the 2/3G network and the mobile terminal resides in the 2/3G network, a request for modifying the bearer context sent by the SGSN is received.
Further, the receiving module is specifically configured to:
if the mobile terminal is in the range of 2/3G network, attaches to 2/3G network and does not activate ISR, a request sent by the MME to modify the bearer context is received when the mobile terminal moves into 4G network coverage and the mobile terminal camps on the 4G network.
In a third aspect, an embodiment of the present disclosure further provides an electronic device, including a memory and a processor, where the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes the downlink data paging method according to any one of the first aspect.
In a fourth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, including: computer program, which when run on a computer, causes the computer to perform a downlink data paging method as described in any one of the first aspects.
Has the advantages that:
in the downlink data paging method, the SGW, the electronic device, and the computer-readable storage medium provided by the present disclosure, the SWG receives a request for modifying a bearer context, which is sent by a network element SGSN or a network element MME, and includes an ISR activation instruction; modifying the bearer context based on the request for modifying the bearer context and saving an ISR activation indication, and starting a timer; when the mobile terminal has a downlink data service, judging that the ISR of the mobile terminal is in an activated state according to the stored ISR activation indication, and judging whether the timer exceeds a preset time or not; if the timer does not exceed the preset time, sending a data service paging request to the SGSN or the MME according to the network element sending the request for modifying the bearer context; and if the paging does not respond, sending the paging request to another network element in the MME or the SGSN. . According to the technical scheme, the SGW can judge the current network of the terminal according to the situation of the terminal and the timer, and select the corresponding network element for paging, so that unnecessary paging is reduced, unnecessary signaling overhead is avoided, and paging success can be guaranteed.
Drawings
Fig. 1 is a flowchart illustrating a downlink data paging method according to an embodiment of the present disclosure;
fig. 2 is an architecture diagram of an SGW according to a second embodiment of the present disclosure;
fig. 3 is an architecture diagram of an electronic device according to a third embodiment of the disclosure.
Detailed Description
In order to make the technical solutions of the present disclosure better understood by those skilled in the art, the present disclosure is further described in detail below with reference to the accompanying drawings and examples.
In which the terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
When the UE with the Access functions of UTRAN (Universal Terrestrial Radio Access Network, GSM/EDGE wireless communication Network) and E-UTRAN (Evolved Universal Terrestrial Radio Access Network ) moves to different Network ranges, the mobile terminal activates the ISR, and when the mobile terminal has downlink data service at the moment, the SGW judges that the ISR is in an activated state, the mobile terminal simultaneously sends out a data service paging request to the MME and the SGSN, so that the MME and the SGSN respectively page in TAI list and RAI ranges, and empty resources are wasted.
The following describes the technical solutions of the present disclosure and how to solve the above problems in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic flowchart of a downlink data paging method provided in an embodiment of the present disclosure, which is applied to a serving gateway SGW, and as shown in fig. 1, the method includes:
step S101: receiving a request for modifying the bearer context sent by a network element SGSN or a network element MME, wherein the request comprises an ISR activation instruction;
step S102: modifying the bearer context and saving an ISR activation indication based on the request for modifying the bearer context, and starting a timer;
step S103: when the mobile terminal has a downlink data service, judging that the ISR of the mobile terminal is in an activated state according to the stored ISR activation indication, and judging whether the timer exceeds a preset time or not;
step S104: if the timer does not exceed the preset time, sending a data service paging request to the SGSN or the MME according to the network element sending the request for modifying the bearer context; and (c) a second step of,
step S105: and if the paging does not respond, sending a paging request to another network element in the MME or SGSN.
The SGW receives a request for modifying a bearer context, which includes an ISR activation indication, from the SGSN or MME, and generally, if the network element sending the request for modifying the bearer context is the SGSN, the terminal may move from a 4G network coverage to an 2/3G network coverage and camp on the 2/3G network, if the LAI (Location Area identity) of the 2/3G network cell where the mobile terminal resides is the same as the LAI associated with the mobile terminal, the mobile terminal does not perform a LAU (Location Area Update), the MSC does not delete the SGs interface, the mobile terminal performs a RAU, the SGSN sends context request information to the MME after receiving the RAU request, after receiving the context response information of the MME, the SGSN sends a request for modifying a bearer (i.e., a PDP (packetdataprototoco 1)) context to the SGW, which includes an ISR activation indication, the SGW modifies the bearer context and saves the ISR activation indication, simultaneously starting a timer; SGSN sends RAU receiving information to mobile terminal, including ISR activating indication, and the mobile terminal activates ISR. If the network element sending the request for modifying the bearer context is an MME, the terminal may move from the coverage of the 2/3G network to the coverage of the 4G network and reside in the 4G network, the mobile terminal performs TAU, the MME sends context request information to the SGSN after receiving the TAU request, after receiving the context response information of the SGSN, the MME sends a request for modifying the bearer context to the SGW, including an ISR activation indication, the SGW modifies the bearer context and saves the ISR activation indication, and at the same time, a timer is started; and the MME sends TAU acceptance information to the mobile terminal, wherein the TAU acceptance information comprises an ISR activation instruction, and the mobile terminal activates ISR.
When the mobile terminal has a downlink data service at this time, the SGW determines that the ISR is in an activated state, and the timer is not overtime, the time-out time of the timer can be set according to the actual situation, generally, the timer is not overtime, and then determines that the mobile terminal is still in the current network, if the network element sending the request for modifying the bearer context is the SGSN, the SGW firstly sends a data service paging request to the SGSN, the SGSN pages in the RAI range, and if the paging does not respond, the SGW sends a paging request to the MME, and the MME pages in the TAI list range. If the network element sending the request for modifying the bearer context is the MME, the SGW sends a data service paging request to the MME firstly, the MME pages in a TAI list range, if the paging does not respond, the SGW sends a paging request to the SGSN, and the SGSN pages in an RAI range. Because the terminal is in a mobile state, the network where the terminal may be located is judged by setting a timer, and the SGW firstly sends a data service paging request to a network element SGSN or MME of a corresponding network, at the moment, the paging is successful with a high probability, when the paging is successful, the paging signaling of another network element can be saved, unnecessary signaling overhead is avoided, waste of air interface resources is prevented, and if the paging is unsuccessful, the paging request is sent to the other network element, so that the paging success is ensured.
Further, the method further comprises:
and if the timer exceeds the preset time, sending a data service paging request to both the MME and the SGSN so that the MME and the SGSN respectively perform paging in the TAI list range and the RAI range.
When the mobile terminal has downlink data service at the moment, the SGW judges that the ISR is in an activated state, the timer is overtime, the SGW sends a data service paging request to the MME and the SGSN, the MME and the SGSN page the mobile terminal in TAI list and RAI ranges respectively, and when the timer is overtime, the network range of the mobile terminal can not be determined, so that paging is performed according to a normal paging process, the paging process is prevented from consuming too long time, and paging success is ensured.
Further, the method further comprises:
if the mobile terminal is in the range of the 4G network after being powered on, the attachment process of the 4G multi-mode card is started and the ISR is not activated, when the mobile terminal moves to the edge of the coverage of the 4G network and the coverage of the 2/3G network and the mobile terminal resides in the 2/3G network, the SGW receives a request sent by the SGSN for modifying the bearer context.
When the mobile terminal is started, starting an attachment process of the 4G multi-mode card within a 4G network range, wherein ISR is not activated; when the mobile terminal moves to the edge of the 4G network coverage and within the 2/3G network coverage, the mobile terminal resides in the 2/3G network; the mobile terminal carries out RAU, and the SGSN sends context request information to the MME after receiving the RAU request; after receiving the context response information of the MME, the SGSN sends a request for modifying the PDP context to the SGW, and the request comprises an ISR activation instruction.
Further, the method further comprises:
if the mobile terminal is in 2/3G network range, attached at 2/3G network and ISR is not activated, the SGW receives the request sent by the MME to modify the bearer context when the mobile terminal moves into 4G network coverage and the mobile terminal camps on the 4G network.
The mobile terminal with ISR capability is firstly positioned in 2/3G network, and is attached in 2/3G network, and ISR is not activated at the moment; when the mobile terminal moves to the coverage range of the 4G network, the mobile terminal resides in the 4G network; the mobile terminal performs TAU, MME sends context request information to SGSN after receiving TAU request, and MME sends a request for modifying bearer context to SGW after receiving context response information of SGSN, including ISR activation indication.
The SGW can judge the current network of the terminal according to the situation of the terminal and the timer, and select the corresponding network element for paging, thereby reducing unnecessary paging times, avoiding unnecessary signaling overhead and ensuring successful paging.
Fig. 2 is an architecture diagram of an SGW according to a second embodiment of the present disclosure, as shown in fig. 2, the SGW has a timer 11, and the SGW includes:
a receiving module 12, configured to receive a request for modifying a bearer context sent by a network element SGSN or MME, where the request includes an ISR activation indication;
a processing module 13, configured to modify the bearer context and save the ISR activation indication, and to start the timer 11;
a judging module 14, configured to, when the mobile terminal has a downlink data service, judge that the ISR of the mobile terminal is in an activated state according to the stored ISR activation instruction, and judge whether the timer 11 exceeds a preset time;
a sending module 15 configured to send a data service paging request to the SGSN or MME according to the network element sending the request for modifying bearer context if the judging module 14 judges that the timer 11 does not exceed the preset time, and,
and if the paging does not respond, sending a paging request to another network element in the MME or SGSN.
Further, the sending module 15 is further configured to:
if the determining module 14 determines that the timer 11 exceeds the preset time, it sends a data service paging request to both the MME and the SGSN, so that the MME and the SGSN perform paging in the TAI list and RAI ranges, respectively.
Further, the receiving module 12 is specifically configured to:
if the mobile terminal is in the range of the 4G network after being started, the attachment process of the 4G multi-mode card is started and the ISR is not activated, and then when the mobile terminal moves to the edge of the coverage range of the 4G network and the coverage range of the 2/3G network and the mobile terminal resides in the 2/3G network, a request for modifying the bearer context sent by the SGSN is received.
Further, the receiving module 12 is specifically configured to:
if the mobile terminal is in the range of 2/3G network, attached at 2/3G network and ISR is not activated, a request sent by the MME to modify the bearer context is received when the mobile terminal moves into 4G network coverage and the mobile terminal camps on the 4G network.
The SGW in the embodiment of the present disclosure is used to implement the downlink data paging method in the first embodiment of the method, so that the description is simple, and specific reference may be made to the related description in the first embodiment of the method, which is not described herein again.
Furthermore, as shown in fig. 3, a third embodiment of the present disclosure further provides an electronic device, which includes a memory 10 and a processor 20, where the memory 10 stores a computer program, and when the processor 20 runs the computer program stored in the memory 10, the processor 20 executes the above-mentioned various possible downlink data paging methods.
The memory 10 is connected to the processor 20, the memory 10 may be a flash memory, a read-only memory or other memories, and the processor 20 may be a central processing unit or a single chip microcomputer.
In addition, the embodiment of the present disclosure also provides a computer-readable storage medium, in which computer-executable instructions are stored, and when at least one processor of the user equipment executes the computer-executable instructions, the user equipment executes the above-mentioned various possible methods.
Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC (Application Specific Integrated Circuit). Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in a communication device.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (10)
1. A downlink data paging method, applied to a Serving Gateway (SGW), includes:
receiving a request for modifying a bearer context, which is sent by a network element serving GPRS support node SGSN or a network element mobility management entity MME, wherein the request comprises an idle state signaling optimization ISR activation instruction;
modifying the bearer context and saving an ISR activation indication based on the request for modifying the bearer context, and starting a timer;
when the mobile terminal has a downlink data service, judging that the ISR of the mobile terminal is in an activated state according to the stored ISR activation indication, and judging whether the timer exceeds a preset time or not;
if the timer does not exceed the preset time, sending a data service paging request to the SGSN or the MME according to the network element sending the request for modifying the bearer context; and (c) a second step of,
and if the paging does not respond, sending a paging request to another network element in the MME or SGSN.
2. The method of claim 1, further comprising:
if the timer exceeds the preset time, sending a data service paging request to both the MME and the SGSN so that the MME and the SGSN respectively page in the ranges of a tracking area identification list TAI list and a routing area identification RAI.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
if the mobile terminal is in the range of the 4G network after being powered on, the attachment process of the 4G multi-mode card is started and the ISR is not activated, when the mobile terminal moves to the edge of the coverage range of the 4G network and the coverage range of the 2/3G network and the mobile terminal resides in the 2/3G network, the SGW receives a request sent by the SGSN for modifying the bearer context.
4. The method according to claim 1 or 2, characterized in that the method further comprises:
if the mobile terminal is in 2/3G network range, attached at 2/3G network and ISR is not activated, the SGW receives the request sent by the MME to modify the bearer context when the mobile terminal moves into 4G network coverage and the mobile terminal camps on the 4G network.
5. A serving gateway, SGW, having a timer, the SGW further comprising:
a receiving module, configured to receive a request for modifying a bearer context sent by a serving GPRS support node SGSN or a mobility management entity MME of a network element, where the request includes an idle state signaling optimization ISR activation indication;
a processing module configured to modify a bearer context and store an ISR activation indication, while starting a timer;
the judging module is set to judge that the ISR of the mobile terminal is in an activated state according to the stored ISR activation indication when the mobile terminal has downlink data service, and judge whether the timer exceeds the preset time;
a sending module configured to send a data service paging request to the SGSN or MME according to the network element that sent the request to modify the bearer context if the determining module determines that the timer does not exceed a preset time, and,
and if the paging does not respond, sending a paging request to another network element in the MME or the SGSN.
6. The SGW of claim 5, wherein the transmitting module is further configured to:
if the judging module judges that the timer exceeds the preset time, a data service paging request is sent to the MME and the SGSN, so that the MME and the SGSN respectively page in the ranges of a tracking area identification list TAIlist and a routing area identification RAI.
7. The SGW of claim 5 or 6, wherein the receiving module is specifically configured to:
if the mobile terminal is in the range of the 4G network after being started, the attachment process of the 4G multi-mode card is started and the ISR is not activated, and then when the mobile terminal moves to the edge of the coverage range of the 4G network and the coverage range of the 2/3G network and the mobile terminal resides in the 2/3G network, a request for modifying the bearer context sent by the SGSN is received.
8. The SGW of claim 5 or 6, wherein the receiving module is specifically configured to:
if the mobile terminal is in the range of 2/3G network, attaches to 2/3G network and does not activate ISR, a request sent by the MME to modify the bearer context is received when the mobile terminal moves into 4G network coverage and the mobile terminal camps on the 4G network.
9. An electronic device comprising a memory and a processor, the memory having a computer program stored therein, the processor when executing the computer program stored in the memory performing the method of any of claims 1-4.
10. A computer-readable storage medium, comprising: computer program which, when run on a computer, causes the computer to perform a downlink data paging method according to any one of claims 1-4.
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