CN105828315B - Gateway selection method and system - Google Patents
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- CN105828315B CN105828315B CN201610141227.7A CN201610141227A CN105828315B CN 105828315 B CN105828315 B CN 105828315B CN 201610141227 A CN201610141227 A CN 201610141227A CN 105828315 B CN105828315 B CN 105828315B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/06—Registration at serving network Location Register, VLR or user mobility server
- H04W8/065—Registration at serving network Location Register, VLR or user mobility server involving selection of the user mobility server
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Abstract
The embodiment of the invention discloses a kind of gateway selection method and systems, it is that user equipment chooses suitable gateway control face entity by mobile management entity, and be that user equipment selects gateway user entity by the selected gateway control face entity of mobile management entity, guarantee effective operation of evolution block core net framework after SGW is separated into two entities of SGW-C and SGW-U.
Description
Technical field
The present invention relates to fields of communication technology, more specifically to a kind of gateway selection method and system.
Background technique
With the growth of user data transmission business, existing evolution block core net (Evolved Packet Core,
EPC) framework can no longer meet user demand, become the bottleneck that limitation user data transmission rate increases, for this purpose, current
3GPP tissue is positive to be considered to enhance existing core network architecture, by gateway (Serving Gateway, SGW) and PDN
The function of control plane and the function of user level of gateway (Packet Data Network Gateway, PGW) are divided
From.Wherein, SGW is separated into two entities: gateway controls face entity SGW-C and service gateway customer face entity SGW-U,
In, SGW-C for realizing former SGW control plane function, SGW-U for realizing former SGW user plane functions.
In EPC core net framework, needs MME and gateway to establish and carry, i.e. mobile management entity (Mobility
Management Entity, MME) it is that user equipment (UE) selects SGW.It is former after SGW is separated into two entities of SGW-C and SGW-U
To be that the method that user equipment (UE) selects SGW is no longer applicable in, and selects SGW-C for how to be UE by mobile management entity
With SGW-U this problem, there is presently no final conclusions.
Summary of the invention
The object of the present invention is to provide a kind of gateway selection method and system, with guarantee SGW be separated into SGW-C and
Effective operation of evolution block core net framework after two entities of SGW-U.
To achieve the above object, the present invention provides the following technical scheme that
A kind of gateway selection method, comprising:
Mobile management entity is that user equipment chooses destination service gateway control face entity；
The mobile management entity sends first to the destination service gateway control face entity and establishes carrying request；
The destination service gateway control face entity establishes carrying request in response to described first, selects for the user equipment
Take destination service gateway customer face entity；
The destination service gateway control face entity sends the second foundation to the destination service gateway customer face entity and holds
Carry request.
The above method, it is preferred that the mobile management entity is that user equipment chooses destination service gateway control face entity
Include:
The mobile management entity obtains the list of the available gateway control face entity of the user equipment；
Face entity, which is controlled, for each gateway in the list distributes weight；
The maximum gateway control face entity of weight is determined as destination service gateway control face entity.
The above method, it is preferred that the mobile management entity obtains the available gateway control plane of user equipment
The list of entity includes:
The mobile management entity obtains the available gateway of the user equipment determined by name server and controls
The list of face entity.
The above method, it is preferred that each gateway in the list controls face entity distribution weight and includes:
The load of the interface protocol type and gateway control face entity supported based on gateway control face entity
Situation is that each gateway in the list controls face entity distribution weight.
The above method, it is preferred that the interface protocol type supported based on gateway control face entity, and service
The load state of gateway control face entity is that each gateway control face entity distribution weight in the list includes:
If the business of the gateway control face entity interface protocol type supported and the user device transmissions is not
Matching, alternatively, the load state of gateway control face entity is more than preset load-threshold value, then it is the service network
The weight for closing control face entity distribution is 0；
If the business of gateway control the face entity interface protocol type supported and the user device transmissions
Match, and the load state of gateway control face entity is less than preset load-threshold value, then is according to the first formula
The gateway control face entity distributes weight, first formula are as follows:
wc=1/Lc+μc
Wherein, wcThe weight of face entity c, L are controlled for gatewaycThe load capacity of face entity c, μ are controlled for gatewayc
For modifying factor corresponding with gateway control face entity c.
A kind of gateway selection system, comprising: mobile management entity, at least one connect with the mobile management entity
A gateway controls face entity, and several gateways connecting at least one described gateway control face entity
User entity；
The mobile management entity is used to choose from least one described gateway control face entity for user equipment
Destination service gateway control face entity, and send first to the destination service gateway control face entity and establish carrying request；
The gateway control face entity is used to build when receiving the first foundation carrying request in response to described first
Vertical carrying request is that the user equipment chooses destination service gateway customer from several described gateway user entities
Face entity, Xiang Suoshu destination service gateway customer face entity send second and establish carrying request.
Above system, it is preferred that choosing mesh from least one described gateway control face entity for user equipment
The aspect of gateway control face entity is marked, the mobile management entity is used for,
Obtain the list of the available gateway control face entity of the user equipment；For each service in the list
Gateway control face entity distributes weight；The maximum gateway control face entity of weight is determined as destination service gateway control face
Entity.
Above system, it is preferred that in the side for the list for obtaining the available gateway control face entity of the user equipment
Face, the mobile management entity are used for,
Obtain the list of the available gateway control face entity of the user equipment determined by name server.
Above system, it is preferred that the method that face entity distributes weight is being controlled for each gateway in the list,
The mobile management entity is used for,
The load of the interface protocol type and gateway control face entity supported based on gateway control face entity
Situation is that each gateway in the list controls face entity distribution weight.
Above system, it is preferred that in the interface protocol type and service network supported based on gateway control face entity
The load state for closing control face entity is the aspect of each gateway control face entity distribution weight in the list, described
Mobile management entity is used for,
If the business of the gateway control face entity interface protocol type supported and the user device transmissions is not
Matching, alternatively, the load state of gateway control face entity is more than preset load-threshold value, then it is the service network
The weight for closing control face entity distribution is 0；
If the business of gateway control the face entity interface protocol type supported and the user device transmissions
Match, and the load state of gateway control face entity is less than preset load-threshold value, then is according to the first formula
The gateway control face entity distributes weight, first formula are as follows:
wc=1/Lc+μc
Wherein, wcThe weight of face entity c, L are controlled for gatewaycThe load capacity of face entity c, μ are controlled for gatewayc
For modifying factor corresponding with gateway control face entity c.
By above scheme it is found that gateway selection method provided in an embodiment of the present invention and system, by mobile management
Entity is the suitable gateway control face entity of user equipment selection, and by the selected gateway control of mobile management entity
Face entity processed is that user equipment selects serving gateway service face entity, after guaranteeing that SGW is separated into two entities of SGW-C and SGW-U
Effective operation of evolution block core net framework.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 be 3GPP at present as defined in EPC core net a kind of network architecture schematic diagram；
Fig. 2 is a kind of network architecture schematic diagram of the EPC core net of enhancing；
Fig. 3 is a kind of implementation flow chart of gateway selection method provided in an embodiment of the present invention；
Fig. 4 is that mobile management entity provided in an embodiment of the present invention is that user equipment chooses destination service gateway control face reality
A kind of implementation flow chart of body；
Fig. 5 is that destination service gateway control face entity provided in an embodiment of the present invention is requested in response to the first foundation carrying,
A kind of implementation flow chart of destination service gateway customer face entity is chosen for user equipment；
Fig. 6 is another implementation flow chart of gateway selection method provided in an embodiment of the present invention；
Fig. 7 is another implementation flow chart of gateway selection method provided in an embodiment of the present invention.
Specification and claims and term " first " in above-mentioned attached drawing, " second ", " third " " the 4th " etc. (if
In the presence of) it is part for distinguishing similar, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that embodiments herein described herein can be in addition to illustrating herein
Sequence in addition is implemented.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
Embodiment in order to better understand the present invention is first illustrated existing evolution block core net EPC.
Core network device in existing EPC includes: mobile management entity MME, gateway SGW, PDN Gateway PGW,
And for the home subscriber server (Home Subcriber Server, HSS) of storing user subscription information and for measuring
Control and charging criterion functional entity (Policy and charging rules function, PCRF) etc..Wherein,
MME is the equipment that EPC core net uniquely controls plane, its major function includes: access control, mobility pipe
Reason, session management, network element selection, storage user carry information etc..
SGW is located at user plane, is the gateway towards the side evolved universal Radio Access Network (E-UTRAN), to each
The user equipment (UE) for accessing E-UTRAN, can only once be serviced for it by a SGW.The major function of SGW is the pipe that conversates
Reason, Route Selection and data forwarding, service quality (Quality of Server, QOS) control, charging and storage information etc..
PGW is located at user plane, is to end in SGi towards public data network (Public Data Network, PDN)
The gateway of interface, i.e. PGW pass through IP server (e.g., the packet switching service server (Packet of SGi interface and operator
Switching Service, PSS)；IP multimedia subsystem server (Ip Multimedia Subsystem, IMS) etc.).
If UE accesses multiple PDN, UE will correspond to one or more PGW.The major function of PGW include IP address distribution, session management,
PCRF selection, Route Selection and data forwarding, QOS control, charging, strategy and charging execution etc..
PCRF includes policy control decision and the function based on flow based charging control, is executed to the policy control being located in PGW
Functional entity (Policy and Charging Enforcement Function, PCEF) is provided to be examined about server data stream
It surveys, gate, based on QOS and based on the network control function of flow based charging.
As shown in Figure 1, for 3GPP at present as defined in EPC core net a kind of network architecture schematic diagram.In Fig. 1, Yong Hushi
In home network, do not roam.Relatively simple for structure when user does not roam, signaling and media are all to pass through ownership
Network connects, and all network elements are also all that home network provides.The control plane of LTE system passes through S1-MME interface and MME phase
Even, user plane is directly connected with SGW by S1-U interface, and SGW is connected with PGW by S5 interface.
Currently, the control plane of EPC core network element and user face do not separate, SGW generally concentrates the machine for being deployed in operator
Room, SGW will not only transmit user face data, also transmit some control plane signalings, as EPC core network data packet forwards quantity
Increasingly increase, the capacity of SGW becomes the bottleneck that limitation core network rate is promoted, and the deployment of SGW centralization makes networking not
Flexibly, scalability is poor, can not adapt to the development of future services.For this purpose, 3GPP has determined LTE core network control plane and user face point
From research project verification, by core network element SGW, PGW and TDF (Traffic Detection Function, flow monitoring function
Entity belongs to optional network element device in core net, is not shown in Fig. 1) control plane function and user plane functions separated.
As shown in Fig. 2, a kind of network architecture schematic diagram of the EPC core net for enhancing.In protokaryon heart network architecture
SGW is separated into two entities: gateway controls face entity SGW-C and service gateway customer face entity SGW-U, wherein SGW-C
For realizing the control plane function of former SGW, SGW-U for realizing former SGW user plane functions.Gateway control face entity and
It is introduced into new interface (in Fig. 2 shown in dotted line) between gateway user entity and carries out information exchange.Similar, former PGW also divides
Face entity PGW-C and packet data gateway user entity PGW-U is controlled for packet data gateway.SGW-C and PGW-C pass through S5
The interaction of interface progress control plane information；SGW-U and PGW-U carries out the interaction of user plane information by S5 interface.
After control plane and the separation of user face, it can simplify the design of each entity, it made more to adapt to distributed network knot
Structure has stronger networking flexibility and scalability, to be more suitable the development of future services.Gateway control plane is real
Body and service gateway customer face entity can be one-to-many (i.e. a gateway control face entity and multiple gateway users
Face entity connection) or multi-to-multi connection relationship, can according to different business scenarios, carry out flexible deployment.For example, for
The intensive urban settings in family, gateway user entity can be deployed in the cell side close to access net, and dilute for user
Thin suburb, gateway user entity can concentrate on regional center (i.e. the central area of rural subscriber)；Meanwhile it servicing
Gateway control face entity can still concentrate the computer room for being deployed in operator, convenient for other control plane core net sections in computer room
Point (MME, HSS etc.) interacts, and also can according to need and is deployed in access net side.
It should be noted that the EPC network architecture of enhancing is the hot spot of each company research of current 3GPP tissue, finally
Framework not yet determine, Fig. 2 enhancing EPC network architecture schematic diagram be that current 3GPP major part member organization tends to adopt
Scheme, be ultimately written standard EPC framework may with Fig. 2 slightly different.
In addition, merely illustrating network element relevant to the embodiment of the present invention in Fig. 1 and Fig. 2, other network elements are not shown.
Before control plane and the separation of user face, MME is responsible for the gateway selection of core net, the i.e. choosing of gateway and PDN Gateway
Select is realized in MME.After control plane and the separation of user face, since gateway user entity belongs to user face section
Point, and MME is control plane node, the two association less, and is communicated without direct interface therebetween, and MME is more difficult to be obtained
The load state of gateway user entity and the link state of gateway user entity and other networks are taken, because
This, the EPC network architecture of enhancing is not suitable for by the scheme of MME selection gateway.Based on this, the embodiment of the present invention provides one
Kind is suitable for the gateway selection method and system of the EPC network architecture of enhancing.
Referring to Fig. 3, Fig. 3 is a kind of implementation flow chart of gateway selection method provided in an embodiment of the present invention, it can
To include:
Step S31: mobile management entity is that user equipment chooses destination service gateway control face entity；
In the embodiment of the present invention, mobile management entity MME is from several gateways control face entity connecting with the MME
Selecting a gateway control face entity SGW-C is user equipment (UE) service.
Step S32: mobile management entity sends first to destination service gateway control face entity and establishes carrying request；
After mobile management entity chooses destination service gateway control face entity, sent out to the destination service gateway control face entity
Foundation carrying request is sent, is carried with being established with the destination service gateway control face entity, and trigger the destination service gateway control
Face entity is that user equipment selects gateway user entity SGW-U.
Step S33: destination service gateway control face entity establishes carrying request in response to first, chooses mesh for user equipment
Mark gateway user entity.
Destination service gateway control face entity is from several gateways connecting with the destination service gateway control face entity
Select a gateway user entity for above-mentioned user equipment (UE) service in user entity.
Step S34: destination service gateway control face entity sends the second foundation to destination service gateway customer face entity and holds
Carry request.
After selected gateway user entity, so that it may which the gateway user entity of Xiang Xuanding sends second and establishes
Carrying request establishes carrying with the gateway user entity selected with this.
Gateway selection method provided in an embodiment of the present invention is that user equipment is chosen suitably by mobile management entity
Gateway controls face entity, and is user equipment selection clothes by the selected gateway control face entity of mobile management entity
It is engaged in gateway service face entity, guarantees the effective of evolution block core net framework after SGW is separated into two entities of SGW-C and SGW-U
Operation.
Optionally, mobile management entity provided in an embodiment of the present invention is that user equipment chooses destination service gateway control face
A kind of implementation flow chart of entity is as shown in figure 4, may include:
Step S41: mobile management entity obtains the list of the available gateway control face entity of user equipment；
Gateway control face entity in list is that can serve the gateway control plane reality of the user equipment
Body.
If list is empty, i.e., there is no any gateway control face entity in list, illustrates not meet user equipment biography
The gateway of defeated requirement controls face entity, and mobile management entity selects gateway failure, and user equipment can not pass through the shifting
Dynamic management entity accesses EPC core net.
Step S42: mobile management entity is that each gateway in list controls face entity distribution weight；
The configuration parameter of face entity can be controlled according to gateway and actual operating parameter is gateway control plane
Entity distributes weight.
Step S43: the maximum gateway control face entity of weight is determined as destination service gateway by mobile management entity
Control face entity.
In the embodiment of the present invention, the weight that gateway controls face entity is bigger, shows that the gateway controls face entity
The priority selected is higher, more preferential selected.
Optionally, mobile management entity provided in an embodiment of the present invention obtains the available gateway control plane of user equipment
A kind of implementation of the list of entity can be with are as follows:
Mobile management entity obtains the available gateway control face entity of user equipment determined by name server
List.
Specifically, name server can according to the position of user equipment (i.e. tracking area identification locating for user equipment,
Tracing Area Identify, TAI) the available service gateway control face entity that can serve the user equipment is parsed,
These gateways control face entity constitutes the optional gateway control plane list of entities of the user equipment.
Optionally, mobile management entity provided in an embodiment of the present invention is that each gateway in list controls face entity
A kind of implementation of distribution weight is specifically as follows:
Interface protocol type and gateway control of the mobile management entity based on gateway control face entity support
The load state of face entity is that each gateway in list controls face entity distribution weight.
Wherein, the interface protocol type that gateway control face entity is supported belongs to the configuration of gateway control face entity
Parameter, and the load state of gateway control face entity then embodies the actual operation shape of gateway control face entity
Condition.
If the interface protocol type that gateway control face entity is supported is matched with the business of user device transmissions, service
The load of gateway control face entity is bigger, and weight is smaller；Load smaller, weight is bigger.
The interface protocol type that gateway control face entity is supported is matched with the business of user device transmissions to be referred to: service
Gateway control face entity can satisfy the data transfer demands of user equipment.It is supported for example, controlling face entity according to gateway
Interface protocol type, gateway control face entity can be divided into three types: only support GTP interface protocol gateway
Face entity is controlled, only supports the gateway of PMIP interface protocol to control face entity, and not only supported GTP interface protocol but also supported
The gateway of PMIP interface protocol controls face entity.If the business need of user device transmissions supports GTP interface protocol, and
Some gateway control face entity only supports PMIP interface protocol, then the interface that some gateway control face entity is supported
The business of protocol type and user device transmissions mismatches；And if some gateway control face entity only supports GTP interface
Agreement, alternatively, not only having supported GTP interface protocol but also having supported PMIP interface protocol, then some gateway control face entity is supported
Interface protocol type matched with the business of user device transmissions.
Optionally, in order to guarantee that mobile management entity learns the load state of gateway control face entity in time, by moving
All gateways control face entity of dynamic management entity control reports its load state to mobile management entity.Specifically,
Gateway control face entity can be reported periodically, i.e., at regular intervals, gateway controls face entity
Its primary load state is reported to mobile management entity.
It can also be reported in such a way that event triggers, for example, the load state of gateway control face entity was apart from last time
The change of the load state reported is more than preset variable threshold, then reports load state to mobile management entity.
Wherein, load state can be measured with percentage, i.e. the current load capacity of gateway control face entity is born with full
The ratio of load capacity under lotus state.
Optionally, the interface protocol type that mobile management entity is supported based on gateway control face entity, and service
The load state of gateway control face entity is that each gateway in list controls a kind of realization side that face entity distributes weight
Formula is specifically as follows:
If gateway controls the interface protocol type that face entity is supported and the business of user device transmissions mismatches, move
Dynamic management entity is that the weight of gateway control face entity distribution is 0；
If the load state that gateway controls face entity is more than preset load-threshold value, mobile management entity is clothes
The weight of gateway control face entity of being engaged in distribution is also 0；
Optionally, if the weight of gateway control face entity is 0, gateway control face entity is considered as in vain
Gateway control face entity, rejected from gateway control plane list of entities.
If the interface protocol type that gateway control face entity is supported is matched with the business of user device transmissions, and is serviced
The load of gateway control face entity is less than preset load-threshold value, then mobile management entity is service network according to the first formula
It closes control face entity and distributes weight, the first formula are as follows:
wc=1Lc+μc
Wherein, wcThe weight of face entity c, L are controlled for gatewaycThe load capacity of face entity c, μ are controlled for gatewayc
For modifying factor corresponding with gateway control face entity c.
In the embodiment of the present invention, the corresponding modifying factor possibility of different gateway control face entities is identical may not also
Together.Specifically taking for the stability setting modifying factor of face entity within a certain period of time can be specifically controlled according to gateway
Value.That is, same gateway control face entity, in different times in section, the value of modifying factor may also be different.
For example, some gateway controls face entity for other gateway control face entities around, for a period of time recently
Interior performance is unstable, frequently occurs overload or breaks down with the link of other equipment, then needs to reduce some gateway
The value of the modifying factor of face entity is controlled, so that some gateway control face entity maintains lower load.And if should
Some gateway controls face entity for other gateway control face entities around, performance in nearest a period of time
Stablize, it is less to overload and without failure with the link of other equipment, then some gateway control plane can be turned up
The value of the modifying factor of entity makes some gateway control face entity maintain higher load.
It is any one gateway control plane in gateway control plane list of entities that gateway, which controls face entity c,
Entity.
It is that the user equipment selection implementation of destination service gateway control face entity is similar to mobile management entity, this hair
In bright embodiment, destination service gateway control face entity establishes carrying request in response to first, chooses target clothes for user equipment
Be engaged in gateway customer face entity a kind of implementation flow chart as figure 5 illustrates, may include:
Step S51: destination service gateway control face entity obtains the available gateway user entity of user equipment
List；
Gateway user entity in list is the gateway user face reality that can serve the user equipment
Body.
If list is empty, i.e., there is no any gateway user entity in list, then illustrates the destination service gateway control
The gateway user entity of face entity control processed is unable to satisfy the data transportation requirements of the user equipment, then the target takes
Gateway control face entity of being engaged in sends the response message for establishing carrying failure to mobile management entity.Mobile management entity is receiving
After establishing the response message of carrying failure, the weight of the destination service gateway control face entity is set as 0, it can also be by the target
Gateway control face entity is deleted from gateway control plane list of entities, then reselects new destination service gateway
Control face entity.
Step S52: destination service gateway control face entity is that each gateway user entity in list distributes power
Weight；
It can be gateway user face according to the configuration parameter of gateway user entity and actual operating parameter
Entity distributes weight.
Step S53: the maximum gateway user entity of weight is determined as mesh by destination service gateway control face entity
Mark gateway user entity.
In the embodiment of the present invention, the weight of gateway user entity is bigger, shows the gateway user entity
The priority selected is higher, more preferential selected.
Optionally, destination service gateway control face entity provided in an embodiment of the present invention obtains the available service of user equipment
A kind of implementation of the list of gateway customer face entity can be with are as follows:
Destination service gateway control face entity obtains the available gateway of user equipment determined by name server and uses
The list of family face entity.
Specifically, name server can according to the position of user equipment (i.e. tracking area identification locating for user equipment,
Tracing Area Identify, TAI) the available service gateway customer face entity that can serve the user equipment is parsed,
These gateway user entities constitute the optional gateway user entity list of the user equipment.
Optionally, destination service gateway control face entity provided in an embodiment of the present invention is each gateway in list
A kind of implementation of user entity distribution weight is specifically as follows:
The interface protocol type that destination service gateway control face entity is supported based on gateway user entity, and clothes
The load state for gateway customer face entity of being engaged in is that each gateway user entity in list distributes weight.
Wherein, the interface protocol type that gateway user entity is supported belongs to the configuration of gateway user entity
Parameter, and the load state of gateway user entity then embodies the actual operation shape of gateway user entity
Condition.
If the interface protocol type that gateway user entity is supported is matched with the business of user device transmissions, service
The load of gateway customer face entity is bigger, and weight is smaller；Load smaller, weight is bigger.
The interface protocol type that gateway user entity is supported is matched with the business of user device transmissions to be referred to: service
Gateway customer face entity can satisfy the data transfer demands of user equipment.For example, being supported according to gateway user entity
Interface protocol type, gateway user entity can be divided into three types: only support the gateway of GTP interface protocol
User entity, only supports the gateway user entity of PMIP interface protocol, and has not only supported GTP interface protocol but also supported
The gateway user entity of PMIP interface protocol.If the business need of user device transmissions supports GTP interface protocol, and
Some gateway user entity only supports PMIP interface protocol, then the interface that some gateway user entity is supported
The business of protocol type and user device transmissions mismatches；And if some gateway user entity only supports GTP interface
Agreement, alternatively, not only having supported GTP interface protocol but also having supported PMIP interface protocol, then some gateway user entity is supported
Interface protocol type matched with the business of user device transmissions.
Optionally, in order to guarantee that gateway control face entity learns the load shape of gateway user entity in time
Condition reports it to gateway control plane entity from all gateway user entities of gateway control face entity control
Load state.Specifically,
Gateway user entity can be reported periodically, i.e., at regular intervals, gateway user entity
Its primary load state is reported to gateway control plane entity.
It can also be reported in such a way that event triggers, for example, the load state of gateway user entity was apart from last time
Changing more than preset variable threshold for the load state reported, then report load state to gateway control plane entity.
Wherein, load state can be measured with percentage, i.e., the current load capacity of gateway user entity is born with full
The ratio of load capacity under lotus state.
Optionally, the interface protocol class that destination service gateway control face entity is supported based on gateway user entity
The load state of type and gateway user entity is that each gateway user entity in list distributes weight
A kind of specific implementation can be with are as follows:
If the business of interface protocol type and user device transmissions that gateway user entity is supported mismatches, mesh
Mark gateway control face entity is that the weight of gateway user entity distribution is 0；
If the load state of gateway user entity is more than preset load-threshold value, destination service gateway control
Face entity is that the weight of gateway user entity distribution is also 0；
Optionally, if the weight of gateway user entity is 0, which is considered as in vain
Gateway user entity, rejected from gateway user entity list.
If the interface protocol type that gateway user entity is supported is matched with the business of user device transmissions, and is serviced
The load of gateway customer face entity is less than preset load-threshold value, then destination service gateway control face entity is public according to first
Formula is that gateway user entity distributes weight, the first formula are as follows:
wu=1/Lu+μu
Wherein, wuFor the weight of gateway user entity u, LuFor the load capacity of gateway user entity u, μu
For modifying factor corresponding with gateway user entity u.
In the embodiment of the present invention, the corresponding modifying factor possibility of different gateway user entities is identical may not also
Together.Specifically taking for modifying factor can be specifically set according to the stability of gateway user entity within a certain period of time
Value.That is, same gateway user entity, in different times in section, the value of modifying factor may also be different.
For example, some gateway user entity is for other gateway user entities around, a period of time recently
Interior performance is unstable, frequently occurs overload or breaks down with the link of other equipment, then needs to reduce some gateway
The value of the modifying factor of user entity, so that some gateway user entity maintains lower load.And if should
Some gateway user entity is for other gateway user entities around, performance in nearest a period of time
Stablize, it is less to overload and without failure with the link of other equipment, then some gateway user face can be turned up
The value of the modifying factor of entity makes some gateway user entity maintain higher load.
It is any one gateway user face in the list of gateway user entity that gateway, which controls face entity u,
Entity.
Another implementation flow chart of gateway selection method provided in an embodiment of the present invention is as shown in fig. 6, can wrap
It includes:
Step S61:MME is user equipment (UE) selection target SGW-C；
Step S62:MME sends first to the target SGW-C of selection and establishes carrying request；
Step S63: target SGW-C establishes carrying request in response to first, is UE selection target SGW-U；
Step S64: target SGW-C, which sends second to the target SGW-U of selection, establishes carrying request；
Step S65: target SGW-U establishes carrying request in response to second, and it is successful to send foundation carrying to target SGW-C
First response message；
Step S66: target SGW-C, which sends foundation to MME, carries successful second response message.
Another implementation flow chart of gateway selection method provided in an embodiment of the present invention is as shown in fig. 7, can wrap
It includes:
Step S71:MME updates the optional SGW-C list of UE, and weight is arranged for each SGW-C in SGW-C list.
Step S72: judge whether SGW-C list is empty, if so, terminating, if it is not, thening follow the steps S73.
Step S73: the maximum SGW-C of weight selection is optimal SGW-C (i.e. target SGW-C), sends the to optimal SGW-C
One establishes carrying request.
Step S74: the SGW-C for receiving the first foundation carrying request judges whether to receive according to self load condition
UE；If can be with, S75 be thened follow the steps, if cannot, then follow the steps S710.
Step S75: the SGW-C for receiving the first foundation carrying request updates the optional SGW-U list of UE, and is SGW-U
Weight is arranged in each SGW-U in list.
Step S76: judge whether SGW-U list is sky, if so, S710 is thened follow the steps, if it is not, thening follow the steps S77.
Step S77: the maximum SGW-U of weight selection is optimal SGW-U, sends the second foundation carrying to optimal SGW-U and asks
It asks.Step S78: the SGW-U for receiving the second foundation carrying request judges whether that UE can be received according to self load condition；If
Can be with, S79 is thened follow the steps, if cannot, then follow the steps S712.
Step S79: response message is sent, comprising: the SGW-U for receiving the second foundation carrying request is established to transmission second
The SGW-C of carrying request, which sends to establish, carries successful first response message, receives the SGW-C of the first response message to MME
It sends to establish and carries successful second response message.
Step S710: the SGW-C for receiving the first foundation carrying request sends the third response for establishing carrying failure to MME
Message.
After step S711:MME receives third response message, the SGW-C of third response message will be sent from SGW-C list
Middle deletion, subsequently into step S72.
Step S712: the SGW-U for receiving the second foundation carrying request establishes the SGW-C hair of carrying request to transmission second
Send the 4th response message for establishing carrying failure.
Step S713: the SGW-C for receiving the 4th response message arranges the SGW-U for sending the 4th response message from SGW-U
It is deleted in table, subsequently into step S76.
Wherein, step S71~step S73 and step S711 are executed by MME.Step S74~step S77 and step
S710 and step S713 are executed by optimal SGW-C.Step S78 and step S712 are executed by optimal SGW-U.
Corresponding with embodiment of the method, the embodiment of the present invention also provides a kind of gateway selection system, and the present invention is implemented
The gateway selection system that example provides includes: mobile management entity, at least one service network connecting with mobile management entity
Control face entity is closed, and several gateways user face reality connecting at least one above-mentioned gateway control face entity
Body；It wherein, can be one-to-many connection relationship (i.e. one between gateway control face entity and gateway user entity
A gateway control face entity is connect with multiple gateway user entities), or the connection relationship of multi-to-multi.
Mobile management entity is used to choose destination service from least one gateway control face entity for user equipment
Gateway control face entity, and send first to destination service gateway control face entity and establish carrying request；
Gateway control face entity is used to establish carrying when receiving the first foundation carrying request in response to first and ask
It asks, chooses destination service gateway customer face entity from several gateway user entities for user equipment, taken to target
Gateway customer face entity of being engaged in sends second and establishes carrying request.
Gateway provided in an embodiment of the present invention selects system, is that user equipment is chosen suitably by mobile management entity
Gateway controls face entity, and is user equipment selection clothes by the selected gateway control face entity of mobile management entity
It is engaged in gateway service face entity, guarantees the effective of evolution block core net framework after SGW is separated into two entities of SGW-C and SGW-U
Operation.
Optionally, destination service gateway control is being chosen for user equipment from least one gateway control face entity
The aspect of face entity, mobile management entity specifically can be used for,
Obtain the list of the available gateway control face entity of user equipment；For each gateway control in list
Face entity distributes weight；The maximum gateway control face entity of weight is determined as destination service gateway control face entity.
Optionally, in terms of the list for obtaining the available gateway control face entity of user equipment, mobile management is real
Body specifically can be used for,
Obtain the list of the available gateway control face entity of user equipment determined by name server.
Optionally, in terms of controlling face entity for each gateway in list and distributing weight, mobile management entity
Specifically it can be used for,
The load of the interface protocol type and gateway control face entity supported based on gateway control face entity
Situation is that each gateway in list controls face entity distribution weight.
Optionally, in the interface protocol type and gateway control plane supported based on gateway control face entity
The load state of entity is that each gateway in list controls the aspect that face entity distributes weight, and mobile management entity is specific
It can be used for,
If gateway controls the interface protocol type that face entity is supported and the business of user device transmissions mismatches, or
Person, the load state that gateway controls face entity is more than preset load-threshold value, then controls face entity point for gateway
The weight matched is 0；
If the interface protocol type that gateway control face entity is supported is matched with the business of user device transmissions, and is serviced
The load state of gateway control face entity is less than preset load-threshold value, then is gateway control plane according to the first formula
Entity distributes weight, the first formula are as follows:
wc=1/Lc+μc
Wherein, wcThe weight of face entity c, L are controlled for gatewaycThe load capacity of face entity c, μ are controlled for gatewayc
For modifying factor corresponding with gateway control face entity c.
It optionally, is being that user equipment chooses destination service gateway customer face from several gateway user entities
The aspect of entity, gateway control face entity specifically can be used for:
Obtain the list of the available gateway user entity of user equipment；For each gateway user in list
Face entity distributes weight；The maximum gateway user entity of weight is determined as destination service gateway customer face entity.
Optionally, in terms of the list for obtaining the available gateway user entity of user equipment, gateway control
Face entity processed specifically can be used for:
Obtain the list of the available gateway user entity of user equipment determined by name server.
Optionally, in terms of distributing weight for each gateway user entity in list, gateway control
Face entity specifically can be used for:
Load based on interface protocol type and gateway user entity that gateway user entity is supported
Situation is that each gateway user entity in list distributes weight.
Optionally, in the interface protocol type and gateway user face supported based on gateway user entity
The load state of entity is the aspect of each gateway user entity distribution weight in list, and gateway control plane is real
Body specifically can be used for:
If the business of interface protocol type and user device transmissions that gateway user entity is supported mismatches, mesh
Mark gateway control face entity is that the weight of gateway user entity distribution is 0；
If the load state of gateway user entity is more than preset load-threshold value, destination service gateway control
Face entity is that the weight of gateway user entity distribution is also 0；
Optionally, if the weight of gateway user entity is 0, which is considered as in vain
Gateway user entity, rejected from gateway user entity list.
If the interface protocol type that gateway user entity is supported is matched with the business of user device transmissions, and is serviced
The load of gateway customer face entity is less than preset load-threshold value, then destination service gateway control face entity is public according to first
Formula is that gateway user entity distributes weight, the first formula are as follows:
wu=1/Lu+μu
Wherein, wuFor the weight of gateway user entity u, LuFor the load capacity of gateway user entity u, μu
For modifying factor corresponding with gateway user entity u.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device (if present) and unit (if present), can refer to corresponding processes in the foregoing method embodiment,
Details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device (if present) and side
Method may be implemented in other ways.For example, the apparatus embodiments described above are merely exemplary, for example, described
The division of unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units
Or component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute
Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit
Indirect coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (6)
1. a kind of gateway selection method characterized by comprising
Mobile management entity is that user equipment chooses destination service gateway control face entity；
The mobile management entity sends first to the destination service gateway control face entity and establishes carrying request；
The destination service gateway control face entity establishes carrying request in response to described first, chooses mesh for the user equipment
Mark gateway user entity；
The destination service gateway control face entity sends the second foundation carrying to the destination service gateway customer face entity and asks
It asks；
Wherein, the mobile management entity is that user equipment selection destination service gateway control face entity includes:
The mobile management entity obtains the list of the available gateway control face entity of the user equipment；
Face entity, which is controlled, for each gateway in the list distributes weight, including: it is based on gateway control plane
The load state for interface protocol type and gateway the control face entity that entity is supported is each service in the list
Gateway control face entity distributes weight；
The maximum gateway control face entity of weight is determined as destination service gateway control face entity；
Wherein, the interface protocol type supported based on gateway control face entity and gateway control face entity
Load state be the list in each gateway control face entity distribute weight include:
If the interface protocol type that the gateway control face entity is supported is matched with the business of the user device transmissions, and
The load state of the gateway control face entity is less than preset load-threshold value, then is the clothes according to the first formula
Gateway control face entity of being engaged in distributes weight, first formula are as follows: wc=1/Lc+μc；Wherein, wcIt is real for gateway control plane
The weight of body c, LcThe load capacity of face entity c, μ are controlled for gatewaycFor amendment corresponding with gateway control face entity c
The factor.
2. can be used the method according to claim 1, wherein the mobile management entity obtains the user equipment
Gateway control face entity list include:
It is real that the mobile management entity obtains the available gateway control plane of the user equipment determined by name server
The list of body.
3. the method according to claim 1, wherein the interface supported based on gateway control face entity
Protocol type and the load state of gateway control face entity are that each gateway in the list controls face entity
Distributing weight includes:
If the business of the gateway control face entity interface protocol type supported and the user device transmissions mismatches,
Alternatively, the load state of the gateway control face entity is more than preset load-threshold value, then it is the gateway control
The weight of face entity distribution processed is 0.
4. a kind of gateway selects system, comprising: mobile management entity, at least one being connect with the mobile management entity
Gateway controls face entity, and several gateways connecting at least one described gateway control face entity are used
Family face entity；It is characterized in that,
The mobile management entity is used to choose target from least one described gateway control face entity for user equipment
Gateway controls face entity, and sends first to the destination service gateway control face entity and establish carrying request；
The gateway control face entity is used to establish and hold in response to described first when receiving the first foundation carrying request
Request is carried, is that the user equipment chooses destination service gateway customer face reality from several described gateway user entities
Body, Xiang Suoshu destination service gateway customer face entity send second and establish carrying request；
Wherein, destination service gateway control face is being chosen for user equipment from least one described gateway control face entity
The aspect of entity, the mobile management entity are used for, and obtain the column of the available gateway control face entity of the user equipment
Table；Face entity, which is controlled, for each gateway in the list distributes weight, including: it is real based on gateway control plane
The load state for interface protocol type and gateway the control face entity that body is supported is each service network in the list
It closes control face entity and distributes weight；The maximum gateway control face entity of weight is determined as destination service gateway control face reality
Body；
In the load shape of the interface protocol type and gateway control face entity supported based on gateway control face entity
Condition is that each gateway in the list controls the aspect that face entity distributes weight, and the mobile management entity is used for, if
The interface protocol type that the gateway control face entity is supported is matched with the business of the user device transmissions, and the clothes
The load state of business gateway control face entity is less than preset load-threshold value, then is the gateway according to the first formula
It controls face entity and distributes weight, first formula are as follows: wc=1/Lc+μc；Wherein, wcThe power of face entity c is controlled for gateway
Weight, LcThe load capacity of face entity c, μ are controlled for gatewaycFor modifying factor corresponding with gateway control face entity c.
5. system according to claim 4, which is characterized in that obtaining the available gateway control of the user equipment
The aspect of the list of face entity, the mobile management entity are used for,
Obtain the list of the available gateway control face entity of the user equipment determined by name server.
6. system according to claim 4, which is characterized in that in the interface association supported based on gateway control face entity
The load state for discussing type and gateway control face entity controls face entity point for each gateway in the list
Aspect with weight, the mobile management entity are used for,
If the business of the gateway control face entity interface protocol type supported and the user device transmissions mismatches,
Alternatively, the load state of the gateway control face entity is more than preset load-threshold value, then it is the gateway control
The weight of face entity distribution processed is 0.
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| CN107222899A (en) * | 2016-03-21 | 2017-09-29 | 中兴通讯股份有限公司 | The system of selection of user plane gateway and system |
| CN108307402A (en) * | 2016-08-31 | 2018-07-20 | 中兴通讯股份有限公司 | Manage the method, apparatus and system of UPF |
| WO2018076184A1 (en) * | 2016-10-25 | 2018-05-03 | 华为技术有限公司 | User plane selection method and apparatus, and storage medium |
| CN111800744B (en) * | 2016-11-29 | 2023-04-11 | 华为技术有限公司 | Communication method and device |
| WO2018129665A1 (en) * | 2017-01-10 | 2018-07-19 | 华为技术有限公司 | Communication method, network exposure function network element, and control plane network element |
| CN108512878B (en) * | 2017-02-28 | 2021-01-29 | 华为技术有限公司 | Service management method and device |
| CN108924849B (en) | 2017-04-01 | 2020-12-08 | 华为技术有限公司 | Session connection establishing method and control plane network element |
| CN108989194B (en) | 2017-05-31 | 2021-07-09 | 微软技术许可有限责任公司 | Distributed IPSec gateway |
| CN109246778B (en) * | 2017-06-16 | 2020-12-04 | 华为技术有限公司 | Method for selecting functional network element and related equipment |
| CN109698800B (en) * | 2017-10-24 | 2022-05-10 | 中国电信股份有限公司 | Method, device and system for realizing control plane entity selection |
| CN110868762B (en) * | 2018-08-27 | 2022-04-12 | 华为技术有限公司 | Data stream processing method, device and system |
| CN110336746B (en) * | 2019-04-23 | 2020-07-14 | 东南大学成贤学院 | User plane node selection method, system and storage medium |
| CN114157579A (en) * | 2019-04-24 | 2022-03-08 | 华为技术有限公司 | Method and device for accessing gateway |
| CN112312426B (en) * | 2019-07-31 | 2023-07-21 | 中国移动通信集团吉林有限公司 | Core network gateway selection method, mobility management entity and gateway equipment |
| CN112449317B (en) * | 2019-09-02 | 2022-06-10 | 华为技术有限公司 | Charging information reporting method and device |
| CN114124737B (en) * | 2020-08-25 | 2023-07-11 | 华为技术有限公司 | Method and device for controlling user equipment to access network |
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| CN105323847A (en) * | 2014-07-04 | 2016-02-10 | 中国移动通信集团河北有限公司 | Communication method based on virtualized evolved packet core network, controller and virtual machine |
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