CN102625412A - Congestion control method and equipment - Google Patents

Congestion control method and equipment Download PDF

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Publication number
CN102625412A
CN102625412A CN2012100900947A CN201210090094A CN102625412A CN 102625412 A CN102625412 A CN 102625412A CN 2012100900947 A CN2012100900947 A CN 2012100900947A CN 201210090094 A CN201210090094 A CN 201210090094A CN 102625412 A CN102625412 A CN 102625412A
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emergency
request message
pdn
session management
management request
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CN102625412B (en
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王胡成
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Abstract

The invention discloses a congestion control method and congestion control equipment. The method comprises the following steps that: network side equipment receives a session management request message from user equipment (UE); and if a current network is in an overloaded state, when the session management request message is used for requesting the establishment of packet data network (PDN) connection of an emergency service, or the session management request message is not used for requesting the establishment of the PDN connection of the emergency service and the PDN connection of the emergency service currently exists, the network side equipment deletes the PDN connection of a non-emergency service in the context of the UE by issuing a PDN disconnection process, so that the UE enters an emergency attach state. According to the embodiment of the invention, the congestion degree of nodes of a core network is reduced, and a network load is alleviated.

Description

A kind of congestion control method and equipment
Technical field
The present invention relates to communication technical field, relate in particular to a kind of congestion control method and equipment.
Background technology
In existing protocol; (the Access Point Name based on APN has been proposed; APN) congested control (APN based Congestion control) mechanism, and it can be divided into based on the mobile management of APN control (APN based Mobility Management control) and based on the conversation management control (APN based Session Management control) of APN.
In mobile management control based on APN; Network side need carry out congested control to the UE (User Equipment, subscriber equipment) of the special APN that contracted, and when the UE of the special APN that contracted sends the mobile management request to network side; Network side judges whether this special APN takes place congested; If, then this mobile management request of network side refusal, and in the refuse information of returning to UE, carry mobile management and keep out of the way timer (back-off timer); And UE need no longer initiate any mobile management process receiving after mobile management keeps out of the way timer before this mobile management kept out of the way timer expiry.
In conversation management control based on APN; When determining certain APN, network side is in congestion state; Then network side need be refused PDN (the Packet Data Network to this APN; Packet data network) connection request (Connectivity Request), and in the refuse information of returning to UE, carry session management and keep out of the way timer; And UE need no longer initiate any session management procedure to this APN receiving after session management keeps out of the way timer before this mobile management kept out of the way timer expiry.
In addition, except congested control based on APN, the current mobile management congestion control mechanism that has also proposed NAS (Non Access Stratum, Non-Access Stratum) layer; Concrete, under the condition of network over loading, network side can be refused any mobile management request of UE, and in the refuse information of returning to UE, carries mobile management and keep out of the way timer; And UE need no longer initiate any mobile management process receiving after mobile management keeps out of the way timer before this mobile management kept out of the way timer expiry.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
Because the hierarchical design of NAS makes mobile management layer and session management layer by independent maintenance, UE can not initiate the mobile management request again after receiving that the refuse information that is directed against the mobile management request and mobile management are kept out of the way timer; But for session management procedure, its congested control is based on APN, and after UE gets into connected state, UE also will allow to send session management messages during network over loading, thus the increase offered load.
Summary of the invention
The embodiment of the invention provides a kind of congestion control method and equipment, to alleviate offered load.
In order to achieve the above object, the embodiment of the invention provides a kind of congestion control method, comprising:
Network equipment receives the session management request message from user equipment (UE); If current network is in overload, then:
When said session management request message is to connect in order to ask to set up the professional packet data network PDN of urgent emergency; Perhaps said session management request message is not that the professional PDN of emergency connects and current when having set up the professional PDN of emergency and connecting in order to ask to set up
Said network equipment will go to connect the PDN connection that the disconnection process is deleted the non-emergency business in the said UE context through initiating PDN, make said UE get into emergency attached emergency attach state.
The embodiment of the invention provides a kind of network equipment, comprising:
Receiver module is used to receive the session management request message from user equipment (UE);
Processing module; Be in overload if be used for current network; Then: when said session management request message is to connect in order to ask to set up the professional packet data network PDN of urgent emergency; Perhaps said session management request message is not that the professional PDN of emergency connects and current when having set up the professional PDN of emergency and connecting in order to ask to set up
To go to connect the PDN connection that the disconnection process is deleted the non-emergency business in the said UE context through initiating PDN, and make said UE get into emergency attached emergency attach state.
Compared with prior art; The embodiment of the invention has the following advantages at least: in the embodiment of the invention; The professional PDN of non-emergency (promptly) through initiating in PDN disconnection (going to connect) the process deletion UE context connects; Thereby reduce the Congestion Level SPCC of core net node, alleviate offered load.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of congestion control method schematic flow sheet that the embodiment of the invention one provides;
Fig. 2 is a kind of congestion control method schematic flow sheet that the embodiment of the invention two provides;
Fig. 3 is a kind of congestion control method schematic flow sheet that the embodiment of the invention three provides;
Fig. 4 is the structural representation of a kind of network equipment of providing of the embodiment of the invention four.
Embodiment
To combine the accompanying drawing among the present invention below, the technical scheme among the present invention is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
The embodiment of the invention one provides a kind of congestion control method, and is as shown in Figure 1, and this method comprises:
Step 101, network equipment receives the session management request message from UE; Wherein, this network equipment can be SGSN (Serving GPRS Supporting Node, Serving GPRS Support Node) or MME (Mobility Management Entity, Mobility Management Entity).
In the embodiment of the invention, this session management request message includes but not limited to: the connection request PDN CONNECTIVITY REQUEST of Packet Data Network; BEARER RESOURCE ALLOCATION REQUEST (bearing resource request for allocation) message; BEARER RESOURCE MODIFICATION REQUEST (bearing resource is revised request) message etc.
In the embodiment of the invention, if current network is in overload, then:
When the session management request message is to connect in order to ask to set up the professional PDN of emergency; Perhaps the session management request message is not that the professional PDN of emergency connects and current when having set up the professional PDN of emergency and connecting in order to ask to set up, execution in step 102;
When the session management request message is not in order to ask to set up the professional PDN of emergency connects and the current emergency of foundation is professional PDN and to connect, execution in step 103.
It should be noted that whether network equipment (being the core net controlled entity) when starting general NAS level congestion control mechanism, can be in overload (overload) state according to configuration guidelines decision network (being core net); Concrete, if when the load of current network has surpassed pre-configured overload threshold, then this network equipment can determine network and is in overload.
Step 102, network equipment connects through the professional PDN of non-emergency that initiates in the PDN disconnection process deletion UE context, makes UE get into emergency attach (adhering to) state.
Step 103, network equipment makes UE get into the Detach state through initiating Detach (attachment removal) process; Perhaps, initiating interface Release (release) process (like S1/Iu interface Release process) makes UE get into Idle (free time) state.
In the embodiment of the invention, when the session management request message is in order to ask to set up the professional PDN of emergency and to connect, this network equipment can also be accepted this session management request message, and accomplishes the professional PDN establishment of connection process of emergency.
In the embodiment of the invention, when the session management request message is not to connect in order to ask to set up the professional PDN of emergency, and current when having set up the professional PDN of emergency and connecting, then this network equipment can also be refused this session management request message.
In the embodiment of the invention, when the session management request message is not to connect in order to ask to set up the professional PDN of emergency, and current when not setting up the professional PDN of emergency and connecting, then this network equipment can also be refused this session management request message.
In sum, in the embodiment of the invention, after receiving the session management request message,
(1) if this session management request message is to connect in order to ask to set up the professional PDN of emergency; Then this network equipment is accepted this session management request message (promptly setting up the professional PDN of emergency connects); And initiate the professional PDN connection of all non-emergency of PDN disconnection process deletion, make UE get into Emergency Attach state.
(2) if this session management request message is not to connect in order to ask to set up the professional PDN of emergency; And this UE has established the professional PDN of emergency and has connected; Then this network equipment is refused this session management request message; And initiate the professional PDN connection of all non-emergency of PDN disconnection process deletion, make UE get into Emergency Attach state.
(3) if this session management request message is not to connect in order to ask to set up the professional PDN of emergency; And this UE does not set up the professional PDN of emergency yet and connects; Then this this session management request message of network equipment refusal, and initiation Detach process makes UE entering Detach state; Perhaps, initiating S1/Iu Release process makes UE get into the Idle state.
It should be noted that in the embodiment of the invention, the UE of above-mentioned UE for carrying out congested control, and this UE is specially the UE that is in connected state.
Application scenarios below in conjunction with concrete is elaborated to the embodiment of the invention.
Embodiment two
The embodiment of the invention two provides a kind of congestion control method, and is as shown in Figure 2, and this method comprises:
Step 201, SGSN/MME receives the PDN Connectivity Request message from UE, and in this PDN Connectivity Request message, Request Type (type)=Emergency.
Step 202, SGSN/MME accepts this PDN Connectivity Request message after definite network transships (overload), set up the professional PDN of emergency and connect.
Step 203, SGSN/MME initiates the professional PDN of all non-emergency of PDN disconnection process deletion and connects.
Embodiment three
The embodiment of the invention three provides a kind of congestion control method, and is as shown in Figure 3, and this method comprises:
Step 301; SGSN/MME receives the PDN Connectivity Request message from UE; In this PDN Connectivity Request message; Request Type is not Emergency, or UE Requested Bearer (carrying) Resource (resource) Modification (modification) Request etc.
Step 302, SGSN/MME refuses this PDN Connectivity Request message after definite network transships (overload).
Step 303, SGSN/MME sends the PDN connection refused message to UE, and checks whether this UE exists the professional PDN of emergency to connect.
Step 304, if exist the professional PDN of emergency to connect, then the professional PDN of SGSN/MME initiation PDN disconnection process all non-emergency of deletion connects; If do not exist the professional PDN of emergency to connect, then SGSN/MME initiates the Detach process and makes UE entering Detach state, perhaps initiates S1/Iu Release process and makes UE get into the Idle state.
Embodiment four
Based on the inventive concept same with said method, a kind of network equipment also is provided in the embodiment of the invention, as shown in Figure 4, this network equipment comprises:
Receiver module 11 is used to receive the session management request message from user equipment (UE);
Processing module 12; Be in overload if be used for current network; Then: when said session management request message is to connect in order to ask to set up the professional packet data network PDN of urgent emergency; Perhaps said session management request message is not that the professional PDN of emergency connects and current when having set up the professional PDN of emergency and connecting in order to ask to set up
To go to connect the PDN connection that the disconnection process is deleted the non-emergency business in the said UE context through initiating PDN, and make said UE get into emergency attached emergency attach state.
When said session management request message is in order to ask to set up the professional PDN of urgent emergency and to connect, said processing module 12 also is used to accept said session management request message, and accomplishes the professional PDN establishment of connection process of emergency.
Said processing module 12, also be used for when said session management request message be not in order to ask to set up the professional PDN of emergency connects and the current emergency of foundation is professional PDN and to connect,
Make said UE get into the Detach state through initiating attachment removal Detach process; Perhaps, initiating interface release Release process makes said UE get into idle Idle state.
When said session management request message is not in order to ask to set up the professional PDN of emergency and to connect, said processing module 12 also is used to refuse said session management request message.
In the embodiment of the invention, said session management request message comprises: the connection request PDN CONNECTIVITY REQUEST of Packet Data Network; Bearing resource request for allocation BEARER RESOURCE ALLOCATION REQUEST message; Bearing resource is revised request BEARER RESOURCE MODIFICATION REQUEST message.
In the embodiment of the invention, said UE is specially the UE that is in connected state.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product is stored in the storage medium; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the sketch map of a preferred embodiment, module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (12)

1. A kind of congestion control method is characterized in that, comprising:
Network equipment receives the session management request message from user equipment (UE); If current network is in overload, then:
When said session management request message is to connect in order to ask to set up the professional packet data network PDN of urgent emergency; Perhaps said session management request message is not that the professional PDN of emergency connects and current when having set up the professional PDN of emergency and connecting in order to ask to set up
said network equipment will go to connect the PDN connection that the disconnection process is deleted the non-emergency business in the said UE context through initiating PDN, make said UE get into emergency attached emergency attach state.
2. The method of claim 1 is characterized in that, when said session management request message is in order to ask to set up the professional PDN of urgent emergency and to connect, said method also comprises:
said network equipment is accepted said session management request message, and accomplishes the professional PDN establishment of connection process of emergency.
3. The method of claim 1 is characterized in that, said network equipment receives the session management request message from user equipment (UE), also comprises afterwards:
When said session management request message is not in order to ask to set up the professional PDN of emergency connects and the current emergency of foundation is professional PDN and to connect,
said network equipment makes said UE get into the Detach state through initiating attachment removal Detach process; Perhaps, initiating interface release Release process makes said UE get into idle Idle state.
4. Like claim 1 or 3 described methods, it is characterized in that when said session management request message is not in order to ask to set up the professional PDN of emergency and to connect, said method also comprises:
said network equipment is refused said session management request message.
5. is characterized in that like each described method of claim 1-4, and said session management request message comprises: the connection request PDN CONNECTIVITY REQUEST of Packet Data Network; Bearing resource request for allocation BEARER RESOURCE ALLOCATION REQUEST message; Bearing resource is revised request BEARER RESOURCE MODIFICATION REQUEST message.
6. is characterized in that like each described method of claim 1-4 said UE is specially the UE that is in connected state.
7. A kind of network equipment is characterized in that, comprising:
Receiver module is used to receive the session management request message from user equipment (UE);
Processing module; Be in overload if be used for current network; Then: when said session management request message is to connect in order to ask to set up the professional packet data network PDN of urgent emergency; Perhaps said session management request message is not that the professional PDN of emergency connects and current when having set up the professional PDN of emergency and connecting in order to ask to set up
will be gone to connect the PDN connection that the disconnection process is deleted the non-emergency business in the said UE context through initiating PDN, make said UE get into emergency attached emergency attach state.
8. Network equipment as claimed in claim 7 is characterized in that, when said session management request message is in order to ask to set up the professional PDN of urgent emergency and to connect,
said processing module also is used to accept said session management request message, and accomplishes the professional PDN establishment of connection process of emergency.
9. Network equipment as claimed in claim 7 is characterized in that,
Said processing module, also be used for when said session management request message be not in order to ask to set up the professional PDN of emergency connects and the current emergency of foundation is professional PDN and to connect,
make said UE get into the Detach state through initiating attachment removal Detach process; Perhaps, initiating interface release Release process makes said UE get into idle Idle state.
10. Like claim 7 or 9 described network equipments, it is characterized in that, when said session management request message is not in order to ask to set up the professional PDN of emergency and to connect,
said processing module also is used to refuse said session management request message.
11. is characterized in that like each described network equipment of claim 7-10 said session management request message comprises: the connection request PDN CONNECTIVITY REQUEST of Packet Data Network; Bearing resource request for allocation BEARER RESOURCE ALLOCATION REQUEST message; Bearing resource is revised request BEARER RESOURCE MODIFICATION REQUEST message.
12. is characterized in that like each described network equipment of claim 7-10 said UE is specially the UE that is in connected state.
CN201210090094.7A 2012-03-30 2012-03-30 Congestion control method and equipment Active CN102625412B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103826327A (en) * 2014-01-28 2014-05-28 大唐移动通信设备有限公司 Method and apparatus of communication service releasing
CN104255054A (en) * 2013-04-11 2014-12-31 华为技术有限公司 Method and device for congestion control
CN104798340A (en) * 2013-11-08 2015-07-22 华为技术有限公司 Network resources allocation method, QOS management network element and application server
GB2509072B (en) * 2012-12-19 2015-08-05 Samsung Electronics Co Ltd Bearer management
CN104969534A (en) * 2012-10-18 2015-10-07 吉拉飞克科技股份有限公司 A congestion control method for dynamically maximizing communication link throughput

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CN102098759A (en) * 2011-02-18 2011-06-15 电信科学技术研究院 Method and device for access control
CN102244916A (en) * 2011-07-29 2011-11-16 电信科学技术研究院 Method and equipment for controlling session management

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CN101877842A (en) * 2009-04-30 2010-11-03 大唐移动通信设备有限公司 Method and device for keeping continuity of emergency services
CN102098759A (en) * 2011-02-18 2011-06-15 电信科学技术研究院 Method and device for access control
CN102244916A (en) * 2011-07-29 2011-11-16 电信科学技术研究院 Method and equipment for controlling session management

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104969534A (en) * 2012-10-18 2015-10-07 吉拉飞克科技股份有限公司 A congestion control method for dynamically maximizing communication link throughput
GB2509072B (en) * 2012-12-19 2015-08-05 Samsung Electronics Co Ltd Bearer management
US9622270B2 (en) 2012-12-19 2017-04-11 Samsung Electronics Co., Ltd Bearer management
CN104255054A (en) * 2013-04-11 2014-12-31 华为技术有限公司 Method and device for congestion control
CN104255054B (en) * 2013-04-11 2018-03-06 华为技术有限公司 Jamming control method and device
US10334505B2 (en) 2013-04-11 2019-06-25 Huawei Technologies Co., Ltd. Congestion control method and apparatus
US10945193B2 (en) 2013-04-11 2021-03-09 Huawei Technologies Co., Ltd. Congestion control in a network
CN104798340A (en) * 2013-11-08 2015-07-22 华为技术有限公司 Network resources allocation method, QOS management network element and application server
CN104798340B (en) * 2013-11-08 2018-06-26 华为技术有限公司 The distribution method of Internet resources, QoS managed network elements and application server
CN103826327A (en) * 2014-01-28 2014-05-28 大唐移动通信设备有限公司 Method and apparatus of communication service releasing
CN103826327B (en) * 2014-01-28 2018-03-23 大唐移动通信设备有限公司 A kind of method and apparatus of communication service release

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