CN101400099A - Load information providing method, S-GW, control method for service gateway and MME - Google Patents
Load information providing method, S-GW, control method for service gateway and MME Download PDFInfo
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Abstract
The invention provides a load information providing method: generating the load information, providing the load information to a mobility management entity MME. The invention also provides a control method of S-GW,S-GW and MME. In the invention, S-GW provides the load information to MME, therefore, MME controls S-GW according to the load information, avoiding all problems generated for controlling S-GW according to static information, thereby effectively controlling S-GW. In a service gateway control method and a device of the invention, MME controls S-GW according to the load information of S-GW, thereby avoiding the problems generated for controlling S-GW according to static information, effectively controlling S-GW.
Description
Technical field
The present invention relates to wireless communication technology, relate in particular to the control technology of gateway (S-GW, Serving Gateway).
Background technology
GPRS (GPRS, General Packet Radio Service) is a kind of mobile pocket data business that grows up on the basis of global system for mobile communications (GSM, Global System for Mobile Communications).GPRS is by introducing the functional entity of packet switching in the GSM digital mobile communication network, finish the transfer of data of carrying out with packet mode, for example, GPRS has increased Serving GPRS Support Node (SGSN newly, Serving GPRS Supporting Node) and Gateway GPRS Support Node (GGSN, and strengthened the software function of a series of original GSM functional entitys Gateway GPRS Supporting Node).Because what GPRS adopted is packet communication techniques, so the user in data communication process and the unfixed wireless channel that takies, therefore can make channel resource more reasonably be used.
Evolved packet system (EPS, Evolved Packet System) network can be thought follow-on GPRS network.As shown in Figure 1, the EPS network comprises Mobility Management Entity (MME, MobilityManagement Entity) 101, S-GW102, PDN Gateway (P-GW, PDN Gateway) 103 the Universal Terrestrial Radio Access Network network (E-UTRAN of evolution,, Evolved Universal Terrestril RadioAccess Network) 104 and subscriber equipment (UE, User Equipment) 105 network entities such as grade.Wherein, MME101 and S-GW102 can be regarded as 2 entities that SGSN separates, and the function class of P-GW103 and GGSN seemingly.MME101 realizes the function of chain of command, comprises mobile management, access signaling, bearer management, roaming management etc., and S-GW102 realizes the function of loading end, comprises the route transmission of grouping bag, the anchor point function of local access network etc.There are certain control relation in MME101 and S-GW102, and S11 interface between the two can adopt GPRS Tunnel Protocol (GTP, GPRS TunnellingProtocol).As shown in Figure 2, MME1 can control S-GW1, S-GW2 simultaneously, and MME2 can control S-GW1, S-GW2 and S-GWn etc. simultaneously, and S-GW1, S-GW2 can be simultaneously respectively by MME1 and MME2 controls.In addition, user can only a corresponding MME and a S-GW, and a user can set up a plurality of carryings simultaneously, but a plurality of carryings that same user sets up simultaneously must be on a S-GW.Since the signaling of a MME processing controls face, and S-GW need handle the data forwarding of loading end, and so in general, the capacity of MME can be bigger than S-GW.
The applicant in serious analysis, scrutinize the back and find that generally speaking, MME is according to pre-configured information Control S-GW such as parameter.For example, when MME need select a S-GW to set up first carrying for the user, MME selected a S-GW according to the selection weights of each pre-configured S-GW from these S-GW, wherein, selected weights general all relevant with the capacity of S-GW.In actual applications, S-GW is along with the increase of running time, and load also might change, if MME still selects S-GW according to the selection weights of static state, then the S-GW of Xuan Zeing may not be only S-GW, and then might cause the load imbalance between S-GW.Equally, MME also is to operate according to pre-configured static information mostly, and then also might produces other problems in other flow processs of control S-GW.For example, on S-GW, set up in the flow process of carrying, MME sets up carrying according to pre-configured static information on S-GW, mentioned above, the load of S-GW might change to some extent along with running time, like this, set up to carry on S-GW according to pre-configured static information and may cause loading that the load of very heavy S-GW can be more and more heavier, the operation that can cause S-GW under the serious situation is near collapse.No matter causing the load imbalance between S-GW, still cause the load of S-GW more and more heavier, all is MME fail effectively the to control performance of S-GW.
Summary of the invention
The control method and the MME that provide a kind of information on load that method, S-GW, gateway are provided is provided the technical problem that the embodiment of the invention will solve, in order to effective control S-GW.
For solving the problems of the technologies described above, the invention provides the embodiment that a kind of information on load provides method, comprising: produce information on load; Described information on load is offered Mobility Management Entity MME.
The present invention also provides a kind of embodiment of control method of gateway, comprising: the information on load that obtains at least one S-GW; According to the information on load that obtains, S-GW is controlled.
The present invention also provides the embodiment of a kind of S-GW, comprising: the information on load generation unit is used to produce information on load; Information on load provides the unit, is used for the information on load that described information on load generation unit produces is offered MME.
The present invention also provides the embodiment of a kind of MME, comprising: information on load obtains the unit, is used to obtain the information on load of at least one S-GW; The S-GW control unit is used for obtaining the information on load that the unit obtains according to described information on load, and S-GW is controlled.
The present invention also provides a kind of wireless communication system, comprises at least one S-GW and controls the MME of described at least one S-GW; Described S-GW is used to produce information on load, and described information on load is offered described MME; The information on load that provides according at least one S-GW is provided described MME, and S-GW is controlled.
Provide among the embodiment at information on load of the present invention, S-GW can offer MME with information on load, and like this, MME just can control S-GW according to information on load, avoided effectively having controlled S-GW according to the static information control variety of issue that S-GW produced.
In gateway control embodiment of the present invention, MME can control S-GW according to the information on load of S-GW, has avoided effectively having controlled S-GW according to the static information control variety of issue that S-GW produced.
Description of drawings
Fig. 1 is the structural representation of existing EPS network;
Fig. 2 is the schematic diagram of control relation between existing MME and the S-GW;
Fig. 3 is the flow chart of first Application Example of the present invention;
Fig. 4 is the flow chart of second Application Example of the present invention;
Fig. 5 is the flow chart of the 3rd Application Example of the present invention;
Fig. 6 is the flow chart of the 4th Application Example of the present invention;
Fig. 7 is the flow chart of the 5th Application Example of the present invention;
Fig. 8 is the flow chart of the 6th Application Example of the present invention;
Fig. 9 is the flow chart of the 7th Application Example of the present invention.
Embodiment
At first, provide the embodiment of method to carry out overall description to information on load of the present invention.Information on load provides the embodiment of method to comprise: produce information on load; Described information on load is offered MME.
Produce information on load and can be S-GW the main body that described information on load offers MME.S-GW offers described information on load before the MME, can receive the information on load request that MME sends, receive request after, provide information on load to MME again.S-GW also can initiatively provide information on load to MME, and for example, S-GW can periodically provide information on load to MME, provides information on load to MME in the time of also can working as load variations.S-GW can use independent message to provide information on load to MME, and also can use carrying to set up request or carry the foundation response provides information on load to MME.Information on load can be carried in the field that original GTP message is expanded, perhaps be carried on independently in the GTP message, the GTP message of extended field for example is echo request, echo response, Create PDPContext Request or Create PDP Context Response.In addition, information on load can be for being used in reference to the load level that shows the S-GW load of machinery systems, perhaps be the load related resource details of the occupied percentage of each resource of indication, load related resource details can comprise information such as carrying number percentage, Packet Service process information percentage, data throughout percentage or cpu load percentage at least.
Again the embodiment of S-GW control method is carried out overall description below.The embodiment of S-GW control method comprises: the information on load that obtains at least one S-GW; According to the information on load that obtains, S-GW is controlled.
The main body that obtains information on load, control S-GW can be MME.MME can after these S-GW receive the request of MME, can return information on load to MME at least one S-GW request information on load of its control.Certainly, MME is at least one S-GW request information on load to its control of property at interval, and for example periodic, this cycle can be provided with by MME or other network entities, specifically can be configured among the MME.MME also can be when sending carrying foundation request to S-GW, request S-GW provide information on load, and is corresponding, and S-GW can provide information on load when returning carrying foundation response to MME.For example, the carrying that MME the sends request of setting up can be carried solicited message, and response is set up in the carrying that S-GW returns can carry information on load.
In addition, S-GW also can initiatively offer MME with information on load.For example, when the load variations of S-GW, S-GW just can initiatively report current information on load to MME.Concrete, can a threshold value be set for load, when load surpassed or equals threshold value, S-GW just can initiatively report current information on load.Further, information on load can comprise a plurality of load parameters simultaneously, can also a load threshold value be set for each load parameter, when the value of load parameter surpasses or equals load threshold value, S-GW just sends information on load to MME, and wherein, load threshold value can be dynamically arranged by MME.Again for example, S-GW can periodically report information on load, and is special, if the load of S-GW surpasses the load threshold value that sets in advance without any changing or not having in the cycle, even then to the moment that reports information on load, also can not report information on load.Again for example, when S-GW sends carrying when setting up request to MME, information on load can be carried on carrying and set up in the request and issue MME.Again for example, when MME sends carrying when setting up request to S-GW, though carrying is set up in the request request that information on load is provided may not be arranged, S-GW can set up in the response in the carrying that returns to MME carry information on load.
The information on load of S-GW can be carried in the existing GTP message, only need to expand the field of existing GTP message, for example, the information on load of S-GW can be carried among the echo request or the echo response after the expansion after the expansion of being sent by S-GW, also can be carried among the Create PDP Context Request or the Create PDP Context Response after the expansion after the expansion.The information on load of S-GW can also be carried in the GTP message that increases newly, in other words, is carried in the message that is independent of existing GTP message, for example, the GTP message of newly-increased request or response.
The information on load of S-GW can be a load level, and this grade is used to indicate the current load of machinery systems of S-GW.The information on load of S-GW also can be the related resource details that comprise a plurality of resource occupation parameters, each resource occupation parameter is used to represent the occupied percentage of this resource, for example, load related resource details can comprise carrying number percentage, Packet Service process information percentage, data throughout percentage or cpu load percentage etc. at least.
In the embodiment of above-mentioned S-GW control method, MME can select a S-GW according to the information on load that obtains from described at least one S-GW.For example, after MME obtains the information on load of at least one S-GW, can at first from these S-GW, select a S-GW that load is minimum, after selecting the minimum S-GW that loads, can judge again whether the minimum S-GW of this load transships, if do not have, then can carry out subsequent treatment normally, for example accept current carrying and set up request etc., if but S-GW transships, request is set up in the carrying that then needs to refuse part or all, even can directly refuse current carrying and set up request, to alleviate the Congestion Level SPCC of S-GW.Certainly,, then can also determine whether current carrying can set up according to information on load if S-GW transships, if can, then accept current carrying and set up request, otherwise, refuse current carrying and set up request.
In the embodiment of above-mentioned S-GW control method, MME also can be according to the information on load that obtains, judge whether the traffic overload of S-GW or judge whether the load of any one S-GW transships, if the load of all S-GW does not all have the load of the S-GW of overload or appointment not transship, then can carry out normal subsequent treatment, for example accept current carrying and set up request etc.; If there is the load of the S-GW of the traffic overload of S-GW or judgement to transship, then can refuses to set up request, even can directly refuse current carrying and set up request about at least one carrying of the S-GW of overload.Certainly, if there is the load of the S-GW of the traffic overload of S-GW or judgement to transship, then can also determine whether current carrying can set up according to information on load, if can, then accept current carrying and set up request, otherwise, refuse current carrying and set up request.
In addition, after MME obtains the information on load of at least one S-GW, when first carrying of MME execution user is set up, can select a S-GW earlier according to the information on load of the S-GW that preserves; When non-first carrying of carrying out the user as MME is set up, just needn't select S-GW again, but, judge whether the S-GW that selects transships, and then whether decision needs the refusal carrying to set up to ask according to the information on load of the S-GW that preserves.
Below more in conjunction with the accompanying drawings, introduce the embodiment of several practical applications.
Fig. 3 is the flow chart of first Application Example of the present invention.As shown in Figure 3, comprising:
Step S301:S-GW1 generates load level information according to occupation condition, and periodic Echo Request message by expansion, to sending its load level information with all MME that control relation is arranged self.Occupation condition for example comprises carrying number, Packet Service processing, data throughout, cpu load etc., wherein, in these resources, the resource situation that the reflection of load level informational needs is the most in short supply.Load level information can be the numerical value in the load level sequence, for example, the load level sequence is 0,80,100,0 expression S-GW is load not, and at this moment, S-GW can accept all carryings and set up request, 80 expression S-GW transship, 100 expression S-GW full loads, at this moment, S-GW can not accept carrying again and set up request.Certainly, load level information also can have other expression mode, 0-5 for example, and 0 expression S-GW is overload not, and 2 expression MME need reduce the carrying of 40% arrival S-GW and set up request, and 5 expression MME need reduce the carrying of 100% arrival S-GW and set up request.In addition, report cycle can dispose on S-GW1.
After step S302:MME receives Echo Request message, return Echo Response message to S-GW1.
Step S301 ': S-GW2 generates load level information according to occupation condition, and periodic Echo Request message by expansion, to sending its load level information with all MME that control relation is arranged self.Wherein, report cycle can dispose on S-GW2.
After step S302 ': MME receives Echo Request message, return Echo Response message to S-GW2.
Here need to prove, though S-GW1 and S-GW2 are two separate entities, and all need to report information on load to MME, report the uninevitable sequencing of information on load, so step S301 and step S301 ' do not have inevitable priority execution sequence.
Step S303: when the user adheres to, when position renewal, switching and MME need create first carrying of user, MME selects the S-GW of a underload to set up carrying based on information on load, supposes that here the S-GW1 load is lower, MME has selected S-GW1.
Step S304:MME judges according to the load level information of the S-GW1 that selects whether S-GW1 transships, if S-GW1 does not transship, then changes step S305; If S-GW1 transships, but MME determines that according to load level information this time carrying can be set up, and then also can change step S305; If S-GW1 transships, and MME determines that according to load level information this time carrying cannot be set up, and then changes step S307.For example, suppose that load level information is the numerical value in the load level sequence, the load level sequence hypothesis is 0,80,100,0 expression S-GW is load not, and at this moment, S-GW can accept all carryings and set up request, 80 expression S-GW transship, 100 expression S-GW full loads, at this moment, S-GW can not accept carrying again and set up request.When the load level information of the S-GW1 that selects is 80, then MME can judge S-GW1 and transships, but overload is not equal at full capacity, and in other words, load level information also is not 100, so MME can determine in view of the above that current carrying can set up.
Step S305:MME sends carrying to S-GW1 and sets up request.
Step S306:S-GW1 returns carrying to MME and sets up response.
Step S307:MME refuses that corresponding user adheres to, the position is upgraded, handoff request.
Fig. 4 is the flow chart of second Application Example of the present invention.As shown in Figure 4, comprising:
Step S401:S-GW1 generates load related resource details according to occupation condition, and uses newly-increased GTP message to transmit load related resource details to MME.The resource that these loads are relevant for example comprises carrying number, Packet Service processing, data throughout, cpu load etc.Load related resource details can comprise following resource occupation parameter, and the resource occupation parameter can be the percentage integer, and computational methods can show the occupied percentage of resource like this for taking resource/total resources * 100, and are specific as follows:
Carrying number percentage: set up the maximum carrying number that carrying number/S-GW can set up;
Packet Service is handled percentage: current group Business Processing number/S-GW largest packet Business Processing number;
Data throughout percentage: current data throughput/S-GW maximum data throughput;
Cpu load percentage: the peak load of current C PU load/CPU.
In addition, can one or more load threshold value be set separately at the relevant resource occupation parameter of each load, that is, when the value of each resource occupation parameter surpassed or is lower than predefined load threshold value, S-GW1 just sent information on load to MME.In addition, can dispose at S-GW1 at the relevant load threshold value of each load.
After step S402:MME receives load related resource details, return information on load report response message to S-GW1.
Step S401 ': S-GW2 generates load related resource details according to occupation condition, and uses newly-increased GTP message to transmit load related resource details to MME.In addition, can one or more load threshold value be set separately at the relevant resource occupation parameter of each load, that is, when the value of each resource occupation parameter surpassed or is lower than predefined load threshold value, S-GW2 just sent information on load to MME.In addition, can dispose at S-GW2 at the relevant load threshold value of each load.
After step S402 ': MME receives load related resource details, return information on load report response message to S-GW2.
Here need to prove, though S-GW1 and S-GW2 are two separate entities, and all need to report information on load to MME, report the uninevitable sequencing of information on load, so step S401 and step S401 ' do not have inevitable priority execution sequence.
Step S403: when the user adheres to, when position renewal, switching and MME need create first carrying of user, MME selects the S-GW that surplus resources is maximum according to load related resource details.Surplus resources information can obtain according to the load related resource details of S-GW, for example, supposes that the load related resource details of certain S-GW represent that its load reaches 40%, and then the surplus resources of this S-GW is exactly 60%.In addition, surplus resources information can also obtain according to the load related resource details of S-GW and the S-GW capacity of MME configuration, for example, the S-GW capacity of MME configuration can be a numerical value, the product of the percentage that this numerical value and load related resource details are represented also can be thought the related resource details of loading.Here suppose that the S-GW1 load is lower, MME has selected S-GW1.
Step S404:MME is according to the load related resource details of the S-GW1 that selects, judge whether S-GW1 transships, if MME judges the threshold value that all do not overload that takies of all resources in the load related resource details of S-GW1, then represent not overload of S-GW1, change step S405, otherwise, change step S407.For example, suppose that the load related resource details of S-GW1 represent that its load has reached 90%, and the load threshold value that MME is provided with is 80%, then MME can judge S-GW1 in view of the above and transships.In addition, if determine that S-GW1 transships, but MME determines that according to load related resource details this time carrying can be set up, and then also can change step S405.
Step S405:MME sends carrying to S-GW1 and sets up request.
Step S406:S-GW1 returns carrying to MME and sets up response.
Step S407:MME refuses that corresponding user adheres to, the position is upgraded, handoff request.
Fig. 5 is the flow chart of the 3rd Application Example of the present invention.As shown in Figure 5, comprising:
Step S501:S-GW1 is according to occupation condition, generates load level information, and initiates user A when the carrying of MME is set up as S-GW1, load level information is carried on to carry sets up request message and send to MME.The concrete generating mode of load level information can be with reference to first Application Example.
After step S502:MME receives that request is set up in carrying, return carrying to S-GW1 and set up response.
Step S501 ': S-GW2 is according to occupation condition, generates load level information, and initiates user B when the carrying of MME is set up as S-GW2, load level information is carried on to carry sets up request message and send to MME.
After step S502 ': MME receives that request is set up in carrying, return carrying to S-GW2 and set up response.
Here need to prove, though S-GW1 and S-GW2 are two separate entities, and all need to send carrying foundation request, send the carrying request of setting up and do not have inevitable sequencing to MME, so step S501 and step S501 ' do not have inevitable priority execution sequence.
Step S503: when user C adheres to, when position renewal, switching and MME need create first carrying of user C, MME selects the S-GW of a underload to set up carrying based on information on load, supposes that here the S-GW1 load is lower, MME has selected S-GW1.
Step S504:MME judges according to the load level information of the S-GW1 that selects whether S-GW1 transships, if S-GW1 does not transship, perhaps S-GW1 transships, but MME determines that according to load level information this time carrying can be set up, and then changes step S505, otherwise, change step S507.
Step S505:MME sets up request to first carrying that S-GW1 sends user C.
Step S506:S-GW1 returns carrying to MME and sets up response.
Step S507:MME refuses that corresponding user C adheres to, the position is upgraded, handoff request.
Fig. 6 is the flow chart of the 4th Application Example of the present invention.As shown in Figure 6, comprising:
Step S601:MME periodically sends Echo Request message to S-GW1, and Echo Request message can be carried the load solicited message.Certainly, MME also can use other message or additionally increase a message, in order to the request information on load.The transmission cycle of Echo Request message can dispose at MME.
Step S602:S-GW1 generates load level information, and according to the load solicited message that Echo Request message is carried, load level information is carried in the EchoResponse message according to occupation condition, returns Echo Response message to MME.Optionally, if Echo Request message is not carried the load solicited message, then S-GW1 also can initiatively be carried on Echo Response message with load level information and return to S-GW1.
Step S601 ': MME periodically sends Echo Request message to S-GW2, and EchoRequest message can be carried the load solicited message.Certainly, MME also can use other message or additionally increase a message, in order to the request information on load.The transmission cycle of Echo Request message can dispose at MME.
Step S602 ': S-GW2 is according to occupation condition, generate load level information, and the load solicited message according to Echo Request message is carried is carried on load level information in the EchoResponse message, returns Echo Response message to MME.Optionally, if Echo Request message is not carried the load solicited message, then S-GW2 also can initiatively be carried on Echo Response message with load level information and return to S-GW2.
Here need to prove,, send the uninevitable sequencing of Echo Request, so step S601 and step S601 ' do not have inevitable priority execution sequence though MME needs to send EchoRequest to S-GW1 and S-GW2 respectively.
Step S603: when the user adheres to, when position renewal, switching and MME need create first carrying of user, MME selects the S-GW of a underload to set up carrying based on information on load, supposes that here the S-GW1 load is lower, MME has selected S-GW1.
Step S604:MME judges according to the load level information of the S-GW1 that selects whether S-GW1 transships, if S-GW1 does not transship, perhaps S-GW1 transships, but MME determines that according to load level information this time carrying can be set up, and then changes step S605, otherwise, change step S607.
Step S605:MME sends carrying to S-GW1 and sets up request.
Step S606:S-GW1 returns carrying to MME and sets up response.
Step S607:MME refuses that corresponding user adheres to, the position is upgraded, handoff request.
Fig. 7 is the flow chart of the 5th Application Example of the present invention.As shown in Figure 7, comprising:
What step S701:MME used the GTP message cycle increase newly sends the load solicited message to S-GW1.The transmission cycle of load solicited message can dispose at MME.
Step S702:S-GW1 generates load level information according to occupation condition, and according to the load solicited message, load level information is carried in the GTP message that increases newly, returns the GTP message that increases newly that carries load level information to MME.Optionally, if MME does not send the load solicited message, then S-GW1 also can initiatively be carried on the GTP message that increases newly with load level information and return to S-GW1.
What step S701 ': MME used the GTP message cycle increase newly sends the load solicited message to S-GW2.The transmission cycle of load solicited message can dispose at MME.
Step S702 ': S-GW2 generates load level information according to occupation condition, and according to the load solicited message, load level information is carried in the GTP message that increases newly, returns the GTP message that increases newly that carries load level information to MME.Optionally, if MME does not send the load solicited message, then S-GW2 also can initiatively be carried on the GTP message that increases newly with load level information and return to S-GW2.
Here need to prove,, send the uninevitable sequencing of load solicited message, so step S701 and step S701 ' do not have inevitable priority execution sequence though MME needs to send the load solicited message to S-GW1 and S-GW2 respectively.
Step S703: when the user adheres to, when position renewal, switching and MME need create first carrying of user, MME selects the S-GW of a underload to set up carrying based on information on load, supposes that here the S-GW1 load is lower, MME has selected S-GW1.
Step S704:MME judges according to the load level information of the S-GW1 that selects whether S-GW1 transships, if S-GW1 does not transship, perhaps S-GW1 transships, but MME determines that according to load level information this time carrying can be set up, and then changes step S705, otherwise, change step S707.
Step S705:MME sends carrying to S-GW1 and sets up request.
Step S706:S-GW1 returns carrying to MME and sets up response.
Step S707:MME refuses that corresponding user adheres to, the position is upgraded, handoff request.
Fig. 8 is the flow chart of the 6th Application Example of the present invention.As shown in Figure 8, comprising:
Step S801: when MME initiates user A when the carrying of S-GW1 is set up, MME sends the carrying that carries the load solicited message to S-GW1 and sets up and ask.Certainly, MME also can not carry the load solicited message to the carrying request of setting up that S-GW1 sends.
Step S802:S-GW1 is according to occupation condition, generates load level information, and load level information is carried on carrying sets up response and return to MME.Concrete, after S-GW1 received that request is set up in user A carrying that MME sends, the load solicited message of carrying according to the carrying request of setting up was carried on carrying with load level information and sets up response and return to MME.If the load solicited message is not carried in the carrying that MME sends to the S-GW1 request of setting up, then S-GW1 can initiatively be carried on load level information carrying and set up response, and the carrying that will carry load level information is set up response and returned to MME.The mode of S-GW1 generation load level information can be with reference to first Application Example.
Step S801 ': when MME initiates user B when the carrying of S-GW2 is set up, MME sends the carrying that carries the load solicited message to S-GW2 and sets up and ask.Certainly, MME also can not carry the load solicited message to the carrying request of setting up that S-GW2 sends.
Step S802 ': S-GW2 is according to occupation condition, generates load level information, and load level information is carried on carrying sets up response and return to MME.Concrete, after S-GW2 received that request is set up in user B carrying that MME sends, the load solicited message of carrying according to the carrying request of setting up was carried on carrying with load level information and sets up response and return to MME.If the load solicited message is not carried in the carrying that MME sends to the S-GW2 request of setting up, then S-GW2 can initiatively be carried on load level information carrying and set up response, and the carrying that will carry load level information is set up response and returned to MME.The mode of S-GW2 generation load level information can be with reference to first Application Example.
Here need to prove, though S-GW1 and S-GW2 are two separate entities, and MME needs to send carrying foundation request to S-GW1 and S-GW2 respectively, but send carrying and set up the uninevitable sequencing of request, so step S801 and step S801 ' do not have inevitable priority execution sequence.
Step S803: when user C adheres to, when position renewal, switching and MME need create first carrying of user C, MME selects the S-GW of a underload to set up carrying based on information on load, supposes that here the S-GW1 load is lower, MME has selected S-GW1.
Step S804:MME judges according to the load level information of the S-GW1 that selects whether S-GW1 transships, if S-GW1 does not transship, perhaps S-GW1 transships, but MME determines that according to load level information this time carrying can be set up, and then changes step S805, otherwise, change step S807.
Step S805:MME sets up request to first carrying that S-GW1 sends user C.
Step S806:S-GW1 returns carrying to MME and sets up response.
Step S807:MME refuses that corresponding user C adheres to, the position is upgraded, handoff request.
Fig. 9 is the flow chart of the 7th Application Example of the present invention.As shown in Figure 9, comprising:
Step S901:S-GW1 generates load related resource details according to occupation condition, and uses newly-increased GTP message to transmit load related resource details to MME.The resource that these loads are relevant for example comprises carrying number, Packet Service processing, data throughout, cpu load etc.Load related resource details can comprise following resource occupation parameter, and the resource occupation parameter can be the percentage integer, and computational methods can show the occupied percentage of resource like this for taking resource/total resources * 100, and are specific as follows:
Carrying number: set up the maximum carrying number that carrying number/S-GW can set up;
Packet Service is handled: current group Business Processing number/S-GW largest packet Business Processing number;
Data throughout: current data throughput/S-GW maximum data throughput;
Cpu load.
In addition, can one or more load threshold value be set separately at the relevant resource occupation parameter of each load, that is, when the value of each resource occupation parameter surpassed or is lower than predefined load threshold value, S-GW1 just sent information on load to MME.In addition, can dispose at S-GW1 at the relevant load threshold value of each load.
After step S902:MME receives load related resource details, return information on load report response message to S-GW1.
Step S901 ': S-GW2 generates load related resource details according to occupation condition, and uses newly-increased GTP message to transmit load related resource details to MME.In addition, can one or more load threshold value be set separately at the relevant resource occupation parameter of each load, that is, when the value of each resource occupation parameter surpassed or is lower than predefined load threshold value, S-GW2 just sent information on load to MME.In addition, can dispose at S-GW2 at the relevant load threshold value of each load.
After step S902 ': MME receives load related resource details, return information on load report response message to S-GW2.
Here need to prove, though S-GW1 and S-GW2 are two separate entities, and all need to report information on load to MME, report the uninevitable sequencing of information on load, so step S901 and step S901 ' do not have inevitable priority execution sequence.
Step S903:S-GW1 sets up request to the carrying that MME sends user A.
Step S904:MME is according to the load related resource details of S-GW1, judge whether S-GW1 transships, if MME judges the threshold value that all do not overload that takies of all resources in the load related resource details of S-GW1, then represent not overload of S-GW1, change step S905, otherwise, change step S906.If determine that S-GW1 transships, but MME determines that according to load related resource details this time carrying can be set up, and then also can change step S905.
Step S905:MME returns carrying to S-GW1 and sets up response, and indication S-GW1 can continue to handle.
Step S906:MME returns carrying to S-GW1 and sets up response, but request is set up in the corresponding carrying of indication refusal.
Need to prove that above-mentioned several application embodiment has just used the embodiment of particular technology means, in actual applications, those skilled in the art fully can be according to actual needs, and these particular technology means are made an amendment slightly or replace.For example, in the above-mentioned embodiment that has, S-GW provides load level information to MME, and in other embodiment, S-GW provides load related resource details to MME, in actual applications, provided load level information originally, and can change into load related resource details are provided, and load related resource details were provided originally, the load level information that provides can be provided into, and certainly, the essence of technical scheme does not change.
Information on load provides the embodiment of method to realize that the embodiment of a kind of information on load generator wherein comprises: the information on load generation unit is used to produce information on load by the device of various ways; Information on load provides the unit, is used for the information on load that described information on load generation unit produces is offered MME.
Information on load provides the unit that described information on load is offered before the MME, can receive the information on load request that MME sends, receive request after, provide information on load to MME again, certainly, also can receive request by other unit.Information on load provides the unit also can initiatively provide information on load to MME, and for example, information on load provides the unit periodically to provide information on load to MME, provides information on load to MME in the time of also can working as load variations.If it is periodically to provide information on load to MME that information on load provides the unit, then described information on load generator can also be provided with a timer, this timer can be provided with described information on load provides the unit that the cycle of information on load is provided, like this, time one arrives, and described information on load provides the unit just information on load can be offered MME; If information on load provides the unit to provide information on load to MME when load variations, then described information on load generator can also be provided with one and be used to the load variations judging unit of judging whether load changes, like this, when described load variations judgment unit judges goes out load and changes, described load variations judging unit can provide the unit to send the prompting of load variations to described information on load, described information on load provides the unit after receiving prompting, just described information on load can be offered MME.Information on load provides the unit can use independent message to provide information on load to MME, and also can use carrying to set up request or carry the foundation response provides information on load to MME.Information on load can be carried in the field of GTP extension of message, perhaps be carried on independently in the GTP message, the GTP message of extended field for example is echo request, echo response, CreatePDP Context Request or Create PDP Context Response.In addition, information on load can be for being used in reference to the load level that shows the S-GW load of machinery systems, perhaps be the load related resource details of the occupied percentage of each resource of indication, load related resource details can comprise information such as carrying number percentage, Packet Service process information percentage, data throughout percentage or cpu load percentage at least.
Need to prove that each unit of above-mentioned information on load generator can be applied among the S-GW, these unit are that the work among the S-GW is original in identical in the operation principle of above-mentioned information on load generator, repeat no more here.
The embodiment of S-GW control method can realize that the embodiment of a kind of S-GW control device wherein comprises by the device of various ways: information on load obtains the unit, is used to obtain the information on load of at least one S-GW; The S-GW control unit is used for obtaining the information on load that the unit obtains according to described information on load, and S-GW is controlled.
Information on load obtains the unit and can comprise: the information on load request unit is used at least one S-GW request information on load; The information on load receiving element is used to receive the information on load that at least one S-GW feeds back.Certainly, information on load obtain the unit at interval property at least one S-GW request information on load, for example periodic, this cycle can be provided with by certain unit in the device or other network entities, specifically can be configured in information on load and obtain in the unit.Information on load obtains the unit also can be when sending carrying foundation request to S-GW, request S-GW provide information on load, and is corresponding, and S-GW can provide information on load when returning carrying foundation response.For example, the carrying request of setting up that information on load obtains to send the unit can be carried solicited message, and response is set up in the carrying that S-GW returns can carry information on load.
In addition, S-GW also can initiatively offer information on load information on load and obtain the unit.For example, when the load variations of S-GW, S-GW just can initiatively obtain the unit to information on load report current information on load.Concrete, can a threshold value be set for load, when load surpassed or equals threshold value, S-GW just can initiatively report current information on load.Further, information on load can comprise a plurality of load parameters simultaneously, can also a load threshold value be set for each load parameter, when the value of load parameter surpasses or equals load threshold value, S-GW just obtains the unit to information on load and sends information on load, wherein, load threshold value can obtain the unit by information on load and dynamically arranges.Again for example, S-GW can periodically report information on load, and is special, if the load of S-GW surpasses the load threshold value that sets in advance without any changing or not having in the cycle, even then to the moment that reports information on load, also can not report information on load.Again for example, send carrying when setting up request, information on load can be carried on carrying and set up and issue information on load in the request and obtain the unit when S-GW obtains the unit to information on load.Again for example, when information on load obtains the unit when S-GW sends carrying foundation request, though carrying is set up in the request request that information on load is provided may not be arranged, S-GW can set up in the response in the carrying that returns to information on load acquisition unit and carry information on load.
The information on load of S-GW can be carried in the existing GTP message, only need to expand the field of existing GTP message, for example, the information on load of S-GW can be carried among the echo request or the echo response after the expansion after the expansion of being sent by S-GW, also can be carried among the Create PDP Context Request or the Create PDP Context Response after the expansion after the expansion.The information on load of S-GW can also be carried in the GTP message that increases newly, in other words, is carried in the message that is independent of existing GTP message, for example, the GTP message of newly-increased request or response.
The information on load of S-GW can be a load level, and this grade is used to indicate the current load of machinery systems of S-GW.The information on load of S-GW also can be the related resource details that comprise a plurality of resource occupation parameters, and each resource occupation parameter is used to represent the occupied percentage of this resource.
In the embodiment of above-mentioned S-GW control device, the S-GW control unit can comprise a S-GW selected cell, after information on load acquisition unit obtains the information on load of at least one S-GW, the S-GW selected cell can at first be selected a S-GW that load is minimum from these S-GW, after selecting the minimum S-GW that loads, whether transship by the minimum S-GW of this load of overload judgment unit judges that is arranged in the S-GW control unit more afterwards, if do not have, then being arranged on carrying in the S-GW control unit sets up requesting processing and can carry out subsequent treatment normally, for example accept current carrying and set up request etc., if but S-GW transships, then need set up requesting processing and refuse the carrying foundation request of part or all by carrying, even can directly refuse current carrying and set up request, to alleviate the Congestion Level SPCC of S-GW.Certainly, if S-GW transships, whether then be arranged on carrying in the S-GW control unit sets up judging unit and can determine whether current carrying can set up according to information on load, if can, then carrying is set up requesting processing and can be accepted current carrying foundation request, otherwise, refuse current carrying and set up request.
In the embodiment of above-mentioned S-GW control device, after information on load acquisition unit obtains the information on load of at least one S-GW, the overload judging unit can be according to the information on load that obtains, judge whether the traffic overload of S-GW or judge whether the load of any one S-GW transships, if the load of all S-GW does not all have the load of the S-GW of overload or appointment not transship, then can carry out normal subsequent treatment, for example accept current carrying and set up request etc.; If there is the load of the S-GW of the traffic overload of S-GW or judgement to transship, then carrying is set up requesting processing and can be refused to set up request about at least one carrying of the S-GW of overload, even can directly refuse current carrying and set up request.Certainly, if the overload judgment unit judges goes out to have the load of the S-GW of the traffic overload of S-GW or judgement to transship, whether then be arranged on carrying in the S-GW control unit sets up judging unit and can determine whether current carrying can set up according to information on load, if can, then carrying is set up requesting processing and can be accepted current carrying foundation request, otherwise, refuse current carrying and set up request.
In addition, after information on load acquisition unit obtains the information on load of at least one S-GW, when information on load obtained first carrying that unit or other unit receive the user and sets up, the S-GW selected cell can be selected a S-GW according to the information on load of the S-GW that preserves; When information on load obtains non-first carrying that unit or other unit receive the user and sets up, do not need the S-GW selected cell to select S-GW again, but according to the information on load of the S-GW that preserves, whether the S-GW that is selected by the overload unit judges transships, and then sets up requesting processing by carrying the carrying request of setting up is handled.
Need to prove that each unit of above-mentioned S-GW control device can be applied among the MME, the work of these unit in MME is original in identical in the operation principle of above-mentioned S-GW control device, repeats no more here.
In addition, the present invention also provides a kind of embodiment of wireless communication system, the MME that it comprises at least one S-GW and controls described at least one S-GW; Described S-GW is used to produce information on load, and described information on load is offered described MME; The information on load that provides according at least one S-GW is provided described MME, and S-GW is controlled.The working method of S-GW is identical with the working method of above-mentioned information on load generator, and the working method of MME is identical with the working method of above-mentioned S-GW control device, repeats no more here.
In an embodiment of the present invention, MME can select suitable S-GW according to the information on load of S-GW, has guaranteed the load balancing between S-GW; MME can judge whether the S-GW overload according to the information on load of S-GW, judges perhaps whether the S-GW of appointment transships, and sets up the load that the technological means of asking alleviates the S-GW that has transshipped by the refusal carrying, has improved the reliability of S-GW; The information on load that S-GW provides can be carried in the existing GTP message, also need not existing network entity is carried out too much change, realizes that cost is low.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (35)
1. an information on load provides method, it is characterized in that, comprising:
Produce information on load;
Described information on load is offered Mobility Management Entity MME.
2. information on load as claimed in claim 1 provides method, it is characterized in that, described information on load is offered MME also comprise before: receive the information on load request that described MME sends.
3. information on load as claimed in claim 1 provides method, it is characterized in that, if described information on load offers MME by gateway S-GW, then described information on load being offered MME is specially: S-GW periodically offers MME with described information on load, perhaps, when the load variations of S-GW, S-GW offers MME with described information on load.
4. information on load as claimed in claim 3 provides method, it is characterized in that, the load variations of S-GW is specially: the load threshold value that the load of S-GW surpasses or equals to set in advance.
5. information on load as claimed in claim 1 provides method, it is characterized in that, if described information on load offers MME by S-GW, then described information on load is offered MME and be specially: S-GW sends the carrying that carries described information on load to MME and sets up request or carrying foundation response.
6. information on load as claimed in claim 1 provides method, it is characterized in that, if described information on load offers MME by S-GW, then described information on load is offered MME and be specially: S-GW sends GPRS Tunnel Protocol GTP message or the GTP message independently after the expansion of the information on load that carries S-GW to MME.
7. information on load as claimed in claim 6 provides method, it is characterized in that, the GTP message after the described expansion is echo request, echo response, Create PDP Context Request or CreatePDP Context Response.
8. information on load as claimed in claim 1 provides method, it is characterized in that, if described information on load offers MME by S-GW, then described information on load is the load level that is used to indicate the S-GW load of machinery systems, perhaps for indicating the load related resource details of the occupied percentage of each resource.
9. information on load as claimed in claim 8 provides method, it is characterized in that, described load level or load related resource details are that S-GW generates according to occupation condition, and described occupation condition comprises carrying number, Packet Service processing, data throughout or cpu load at least.
10. information on load as claimed in claim 9 provides method, it is characterized in that, described load level is the numerical value in the sequence, is used to represent the rank of S-GW load.
11. information on load as claimed in claim 9 provides method, it is characterized in that, described load related resource details comprise carrying number percentage, Packet Service process information percentage, data throughout percentage or cpu load percentage at least.
12. the control method of a gateway is characterized in that, comprising:
Obtain the information on load of at least one S-GW;
According to the information on load that obtains, S-GW is controlled.
13. the control method of gateway as claimed in claim 12 is characterized in that, the information on load that obtains at least one S-GW specifically comprises:
To S-GW request information on load;
Receive the information on load of at least one S-GW feedback.
14. the control method of gateway as claimed in claim 13 is characterized in that, is specially to S-GW request information on load: periodically send the information on load request to S-GW.
15. the control method of gateway as claimed in claim 13, it is characterized in that, if the request of the information on load of S-GW is issued S-GW by MME, then be specially to S-GW request information on load: MME sends the carrying that carries the information on load request to S-GW and sets up request.
16. control method as claim 13 or 15 described gateways, it is characterized in that, if that receive information on load is MME, the information on load that then receives at least one S-GW feedback is specially: MME receives the carrying foundation response that carries information on load that at least one S-GW returns.
17. the control method of gateway as claimed in claim 12 is characterized in that, the information on load that receives at least one S-GW feedback is specially: receive the information on load that at least one S-GW initiatively reports.
18. the control method of gateway as claimed in claim 17, it is characterized in that, receiving the information on load that at least one S-GW initiatively reports is specially: receive the information on load that at least one S-GW periodically reports, perhaps, receive the information on load that at least one S-GW reports when load variations.
19. the control method of gateway as claimed in claim 18 is characterized in that, the S-GW load variations is specially: the load threshold value that the load of S-GW surpasses or equals to set in advance.
20. the control method of gateway as claimed in claim 12 is characterized in that, according to the information on load that obtains, S-GW controlled is specially: according to the information on load that obtains, select a S-GW that load is minimum from described at least one S-GW.
21. the control method of gateway as claimed in claim 20 is characterized in that, the S-GW that described load is minimum is the minimum S-GW of load level, or the maximum S-GW of surplus resources.
22. the control method of gateway as claimed in claim 20, it is characterized in that, also comprise after the S-GW that load of selection is minimum from described at least one S-GW: judge whether the S-GW that selects transships, if then refuse current carrying foundation request about the S-GW of described selection.
23. the control method of gateway as claimed in claim 20, it is characterized in that, from described at least one S-GW, select a minimum S-GW of load also to comprise afterwards: to judge whether the S-GW that selects transships, if, then determine according to information on load whether current carrying can set up, if then accept current carrying and set up request, otherwise, refuse current carrying and set up request.
24. the control method of gateway as claimed in claim 12, it is characterized in that, according to the information on load that obtains, S-GW controlled be specially: according to the information on load that obtains, whether the load of judging the S-GW of appointment transships, if then refuse current carrying foundation request about the S-GW of described appointment.
25. the control method of gateway as claimed in claim 12, it is characterized in that, according to the information on load that obtains, S-GW controlled be specially:, judge whether the load of the S-GW of appointment transships according to the information on load that obtains, if, then determine according to information on load whether current carrying can set up, if then accept current carrying and set up request, otherwise, refuse current carrying and set up request.
26. the control method of gateway as claimed in claim 12 is characterized in that, described information on load is the load level that is used to indicate the S-GW load of machinery systems, perhaps for indicating the load related resource details of the occupied percentage of each resource.
27. a S-GW is characterized in that, comprising:
The information on load generation unit is used to produce information on load;
Information on load provides the unit, is used for the information on load that described information on load generation unit produces is offered MME.
28. S-GW as claimed in claim 27 is characterized in that, also comprises:
Timer, being used to be provided with described information on load provides the unit that the cycle of information on load is provided;
The load variations judging unit is used for judging whether load changes, and when judging load variations, provides the unit to send the prompting of load variations to described information on load.
29. S-GW as claimed in claim 27 is characterized in that, described information on load is the load level that is used to indicate the S-GW load of machinery systems, perhaps for indicating the load related resource details of the occupied percentage of each resource.
30. a MME is characterized in that, comprising:
Information on load obtains the unit, is used to obtain the information on load of at least one S-GW;
The S-GW control unit is used for obtaining the information on load that the unit obtains according to described information on load, and S-GW is controlled.
31. MME as claimed in claim 30 is characterized in that, described information on load obtains the unit and comprises:
The information on load request unit is used for to S-GW request information on load;
The information on load receiving element is used to receive the information on load that at least one S-GW feeds back.
32. MME as claimed in claim 30 is characterized in that, described S-GW control unit comprises: the S-GW selected cell, be used for obtaining the information on load that the unit obtains according to described information on load, and from described at least one S-GW, select a S-GW.
33. MME as claimed in claim 32 is characterized in that, described S-GW control unit also comprises:
The overload judging unit is used to judge whether the S-GW that described S-GW selected cell is selected transships;
Requesting processing is set up in carrying, is used for when the S-GW that the described S-GW selected cell of described overload judgment unit judges is selected has transshipped, and refusal is set up request about the current carrying of the S-GW of described selection.
34. MME as claimed in claim 33, it is characterized in that, described S-GW control unit also comprises: whether carrying sets up judging unit, be used for when the S-GW that the described S-GW selected cell of described overload judgment unit judges is selected has transshipped, determine according to information on load whether current carrying can set up, if then carrying is set up requesting processing and accepted current carrying foundation request, otherwise, refuse current carrying and set up request.
35. a wireless communication system is characterized in that, comprises at least one S-GW and controls the MME of described at least one S-GW;
Described S-GW is used to produce information on load, and described information on load is offered described MME;
The information on load that provides according at least one S-GW is provided described MME, and S-GW is controlled.
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| CNA2007101517161A CN101400099A (en) | 2007-09-27 | 2007-09-27 | Load information providing method, S-GW, control method for service gateway and MME |
| PCT/CN2008/072484 WO2009043276A1 (en) | 2007-09-27 | 2008-09-24 | Method for providing load information |
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| CNA2007101517161A CN101400099A (en) | 2007-09-27 | 2007-09-27 | Load information providing method, S-GW, control method for service gateway and MME |
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| CN101400099A true CN101400099A (en) | 2009-04-01 |
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| CN102984761A (en) * | 2012-11-28 | 2013-03-20 | 大唐移动通信设备有限公司 | Method and device for transmitting and acquiring equipment capacity information |
| CN108632894A (en) * | 2013-05-13 | 2018-10-09 | 华为技术有限公司 | The method and apparatus of premature beats |
| CN108632894B (en) * | 2013-05-13 | 2021-08-31 | 华为技术有限公司 | Overload control method and device |
| WO2016192381A1 (en) * | 2015-06-05 | 2016-12-08 | 中兴通讯股份有限公司 | Processing method and device for bearer establishment and base station handover |
| CN106304160A (en) * | 2015-06-05 | 2017-01-04 | 中兴通讯股份有限公司 | Load creating, base station switching handling method and device |
| CN106304160B (en) * | 2015-06-05 | 2021-07-30 | 中兴通讯股份有限公司 | Bearer creation and base station switching processing method and device |
| WO2018192477A1 (en) * | 2017-04-20 | 2018-10-25 | 中兴通讯股份有限公司 | Method and system for controlling user plane load of gateway |
| CN112714456A (en) * | 2019-10-24 | 2021-04-27 | 普天信息技术有限公司 | Method for improving core network service quality, xGW and MME |
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| WO2009043276A1 (en) | 2009-04-09 |
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