CN102469543A - Admission control method, apparatus thereof and system thereof - Google Patents
Admission control method, apparatus thereof and system thereof Download PDFInfo
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- CN102469543A CN102469543A CN2010105346949A CN201010534694A CN102469543A CN 102469543 A CN102469543 A CN 102469543A CN 2010105346949 A CN2010105346949 A CN 2010105346949A CN 201010534694 A CN201010534694 A CN 201010534694A CN 102469543 A CN102469543 A CN 102469543A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
- H04W36/0044—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of quality context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/10—Reselecting an access point controller
Abstract
The invention discloses an admission control method, an apparatus thereof and a system thereof. The method comprises the following steps: a target network side receives a switching request signaling sent by a source network side, wherein, the request signaling comprises attribute information of a terminal and a service quality parameter of a wireless access bearer; the target network side carries out admission control according to the attribute information and the service quality parameter. Through the method, the apparatus, and the system in the invention, switching capability of a network and stability of the network are raised.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of acceptance controlling method, Apparatus and system.
Background technology
Interpersonal communication (Human to Human; Abbreviate H2H as); Through operation of equipment is communicated, the existing wireless communications technology is based on that the Communication Development of H2H gets up, in H2H communication; People are subscriber equipment (User Equipment abbreviates UE as) the realization communication under the ordinary meaning by H2H equipment.And the sense stricto definition of machine (Machine toMachine abbreviates M2M as) is the communication of machine to machine, and sensu lato definition is the application and the service of core, networking with the machine terminal intelligent interaction.It is based on the intelligence machine terminal, is the access means with multiple communication mode, is the informatization resolve scheme that the client provides, and is used to satisfy the information system requirement of client to aspects such as monitoring, command scheduling, data acquisition and measurements.
The development of wireless technology is the key factor of M2M market development; It has broken through the space-time restriction and the region obstacle of traditional communication mode; Make the enterprise and the public break away from the cable constraint, let the client more effectively control cost, reduce mounting cost and easy to use.In addition; Growing demand is promoting M2M and is constantly advancing; Constantly increase with information processing capability and the network bandwidth and conflictingly to be, the means that information is obtained lag far behind, and M2M has well satisfied this demand of people; Can monitor external environment condition in real time through its people, realize on a large scale, the information gathering of automation.Therefore, M2M can be widely used in sector application, domestic. applications, individual's application etc.Sector application is like traffic monitoring, warning system, rescue at sea, automatic vending machine, driving paying etc.Domestic. applications is like automatic data logging, temperature control etc.The individual use as: life detection, far-end diagnosis etc.
The communication object of M2M is a machine, the Human-to-Machine.Data communication between one or more machines is defined as MTC (Machine Type Communication, machine class communication), lessly in this case needs human-computer interaction.Participate in the machine of MTC, be defined as MTC equipment (MTC device abbreviates MD as).MTC equipment is MTC user's terminal, can communicate through PLMN network and MTC equipment, MTC server.
After introducing M2M and using, can carry out some optimizations to existing system, satisfying the M2M application demand, and the domestic consumer's equipment in the existing system not exerted an influence according to its characteristics.Some distinguishing features that M2M uses have: the MTC number of devices is a lot, and each data quantity transmitted is little, and transmission intercal is big, the position relative fixed.Seeing that the MTC amount of equipment is numerous; With common UE be that the H2H amount of equipment is not in an one magnitude; The extensive use of MTC equipment makes network be in overload probably, such as when certain sub-district power outage taking place suddenly, when power up; Numerous MTC equipment possibly attempted access network simultaneously, and this will cause network to be in overload.Introduce the overload that causes in order to tackle MTC equipment; Network side need promote the ability of overload control; Require to possess the ability that new processing is transshipped for core network element in the existing protocol, like MME (the Mobility Management Entity of LTE (Long TermEvolution, Long Term Evolution) system; Mobility Management Entity); The traffic carrying capacity of the APN (Access point name abbreviates APN as) that need report according to MTC equipment (number, maximum bearer rate etc. are carried in maximum activation) is implemented the overload control based on APN, can send registration reject (AttachReject), location area updating refusal to UE.The base station of network side also need possess the ability of implementing different access controls according to the identity (whether being MTC equipment) that accesses terminal, connects refusal (RRC Connection Reject) signaling like the base station through RRC and limits the access of some MTC equipment.
In the correlation technique, because the real-time load of different base stations and different MME is different, the admittance control (Admission Control) that different base station is taked the MTC equipment that inserts also maybe be different.For the terminal of access network, when it switched, the grid side need be implemented different Access Control Policys, the switching capability that causes causing network over loading when multiple types of terminals switches in the correlation technique and reduced network.
Summary of the invention
Main purpose of the present invention is to provide a kind of switching handling method, Apparatus and system, to solve the problem that possibly cause network over loading when multiple types of terminals switches in the above-mentioned correlation technique and reduce the switching capability of network at least.
According to an aspect of the present invention, a kind of acceptance controlling method is provided.
Acceptance controlling method according to the present invention comprises: the objective network side joint is received the handoff request signaling that the source network side is sent, and wherein demand signalling comprises the attribute information at terminal and the QoS parameter of RAB; The objective network lateral root is admitted control according to attribute information and QoS parameter.
Further, attribute information comprises one of following or its combination: the business model information that professional precedence information, terminal set up, the access grade information at terminal, the information of terminal roaming are set up in the grouping information at the type information at terminal, the type of service at terminal, terminal, the precedence information at terminal, terminal.
Further, the objective network lateral root admits control to comprise according to attribute information and QoS parameter: the objective network lateral root according to this one of down or its combination judge whether to allow the corresponding terminal of attribute information to switch: core net is to the access control demand of objective network side or overload demand for control, the load condition of objective network side, the demand of operation and maintenance server; If judged result is for being, and satisfy the demand of QoS parameter, then the objective network side allows the terminal to switch, otherwise switch at the refusal terminal.
Further, after switched at objective network side permission terminal, also comprise: objective network side direction source network side was sent the Handover Request Acknowledge signaling; After switch at objective network side refusal terminal, also comprise: objective network side direction source network side is sent to switch and is prepared failed signaling.
Further, switch to prepare to carry in the failed signaling reason of handoff failure, it is one of following that reason comprises:
Do not allow the reason of the terminal access of type information; Do not allow the reason of the terminal access of grouping information; Do not allow the reason of the terminal access of precedence information; Do not allow to set up the reason that the terminal of professional precedence information is inserted, the reason that the terminal of the business model information that does not allow to set up is inserted, the reason that does not allow the terminal of access grade information to insert.
Further, in broadband CDMA system WCDMA, the handoff request signaling is the re-positioning request signaling, and switching the preparation failed signaling is that failed signaling is prepared in reorientation.
Further, the handoff request signaling of objective network side joint receipts source network side transmission comprises: the handoff request signaling that the objective network side is sent through direct interface reception sources network side; Or the objective network side is through the handoff request signaling of core net reception sources network side transmission.
Further, in Long Term Evolution LTE system, the source network side is a source base station, and the objective network side is a target BS; In broadband CDMA system, the source network side is a source radio network controller, and the objective network side is a target radio network controller; The terminal comprises: machine class communication equipment and/or person to person's communication equipment.
To achieve these goals, according to a further aspect in the invention, a kind of objective network side is provided.
Objective network side according to the present invention comprises: receiver module, be used for the handoff request signaling that the reception sources network side sends, and wherein demand signalling includes the attribute information at terminal and the QoS parameter of RAB; Control module is used for admitting control according to attribute information and QoS parameter.
Further, attribute information comprises one of following or its combination: the business model information that professional precedence information, terminal set up, the access grade information at terminal, the information of terminal roaming are set up in the grouping information at the type information at terminal, the type of service at terminal, terminal, the precedence information at terminal, terminal.
Further; Control module comprises: judge submodule, be used for judging whether to allow the corresponding terminal of attribute information to switch according to one of following or its combination: core net is to the access control demand of objective network side or overload demand for control, the load condition of objective network side, the demand of operation and maintenance server; First confirms submodule, be used in the judged result of judging submodule for being, and when satisfying the demand of QoS parameter, switches at the permission terminal; Second confirms submodule, is used in the judged result of judging submodule for not the time, confirms that the refusal terminal switches.
Further, control module also comprises: first sends submodule, is used for sending the Handover Request Acknowledge signaling to the source network side; Second sends submodule, is used for sending switching to the source network side and prepares failed signaling.
In order to realize the present invention, according to an aspect of the present invention, a kind of source network side is provided.
Source network side according to the present invention comprises: sending module, be used for sending the handoff request signaling to the objective network side, and wherein demand signalling includes the attribute information at terminal.
In order to realize the present invention, according to an aspect of the present invention, a kind of switching processing system is provided.
Switching processing system according to the present invention comprises: above-mentioned source network side and above-mentioned objective network side.
Through the present invention, the handoff request information of the attribute information that carries the terminal that employing objective network side joint receipts source network side is sent and the QoS parameter of RAB is admitted control according to attribute information and QoS parameter then.Solve the problem that possibly cause network over loading when multiple types of terminals switches in the correlation technique, improved the switching capability and the stability of network of network.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the network topology sketch map according to the LTE system of correlation technique;
Fig. 2 is the network topology sketch map according to the WCDMA system of correlation technique;
Fig. 3 is the flow chart according to the acceptance controlling method of the embodiment of the invention;
Fig. 4 is the flow chart one of switching handling method according to the preferred embodiment of the invention;
Fig. 5 is the flowchart 2 of switching handling method according to the preferred embodiment of the invention;
Fig. 6 is the flow chart 3 of switching handling method according to the preferred embodiment of the invention;
Fig. 7 is the structured flowchart according to the objective network side of the embodiment of the invention;
Fig. 8 is the objective network side preferred construction block diagram according to the embodiment of the invention;
Fig. 9 is the structured flowchart according to the source network side of the embodiment of the invention; And
Figure 10 is the structured flowchart according to the acceptance control system of the embodiment of the invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Present embodiment provides a kind of acceptance controlling method, and Fig. 3 is the flow chart according to the acceptance controlling method of the embodiment of the invention, and is as shown in Figure 3, and this method comprises:
Step S302: the objective network side joint is received the handoff request signaling that the source network side is sent, and wherein demand signalling includes the attribute information at terminal and the QoS parameter of RAB (Quality of Service abbreviates QoS as);
Step S304: the objective network lateral root is admitted control according to the attribute information at terminal and the QoS parameter of RAB.
Through above-mentioned steps, the objective network side is received the handoff request signaling of the attribute information that carries the terminal from the source network side joint, implements to admit control according to QoS and attribute information then.Overcome the problem that effectively to implement handover decisions when multiple types of terminals switches in the correlation technique to different types of terminals, satisfied the load demand for control of different access network elements, improved the performance of network.
Preferably, can expand existing QoS, make it comprise the attribute information at terminal.This moment, the objective network lateral root implemented to admit control according to QoS, in admitting control, considered the attribute information at the terminal among the QoS.
Preferably, attribute information comprises one of following or its combination: the business model information that professional precedence information, terminal set up, the access grade information at terminal, the information of terminal roaming are set up in the grouping information at the type information at terminal, the type of service at terminal, terminal, the precedence information at terminal, terminal.Through the preferred embodiment, admit control according to the above-mentioned attribute information at terminal, improved the accuracy of switching.
Preferably, the objective network lateral root admits control to comprise according to attribute information and QoS parameter: the objective network lateral root according to this one of down or its combination judge whether to allow the corresponding terminal of attribute information to switch: core net is to the access control demand of objective network side or overload demand for control, the load condition of objective network side, the demand of operation and maintenance server; If judged result is for being, and the objective network side satisfies the QoS parameter demand, and then the objective network side allows the terminal to switch, otherwise switch at the refusal terminal.Through the preferred embodiment, the objective network lateral root is confirmed the terminal switched or refuse to switch according to above-mentioned three combined factors and QoS parameter, has improved the objective network side joint and has received accuracy and the efficient of controlling.
Preferably, after switch at objective network side permission terminal, also comprise: the said source network side of objective network side direction is sent the Handover Request Acknowledge signaling; After switch at objective network side refusal terminal, also comprise: objective network side direction source network side is sent to switch and is prepared failed signaling.Through the preferred embodiment, use existing signaling to transmit information, reduced R&D costs.
Preferably; Switch to prepare to carry in the failed signaling reason of handoff failure, it is one of following that this reason comprises: the reason that does not allow the terminal of the type information to insert, the reason that does not allow the terminal of this grouping information to insert; Do not allow the reason of the terminal access of this precedence information; The reason that does not allow this terminal of setting up service priority information to insert, the reason that does not allow the terminal of the business model information of this foundation to insert, the reason that does not allow the terminal of this access grade information to insert.Through the preferred embodiment, the source network side can be used for switching flow afterwards with switching the reason of preparing to fail in the failed signaling, improves the efficient that switch at the terminal.
Preferably, in broadband CDMA system (WCDMA), the handoff request signaling is the re-positioning request signaling, and switching the preparation failed signaling is that failed signaling is prepared in reorientation.Through the preferred embodiment, in the WCDMA system, adopt existing signaling transmission information, reduced R&D costs.
Preferably, the handoff request signaling of objective network side joint receipts source network side transmission comprises: the handoff request signaling that the objective network side is sent through direct interface reception sources network side; Or the objective network side is through the handoff request signaling of core net reception sources network side transmission.Through the preferred embodiment, the objective network side can directly or be passed through the handoff request signaling that core net reception sources network side sends, and has improved the flexibility of sending the handoff request signaling.
Preferably, in Long Term Evolution (LTE) system, the source network side is a source base station, and the objective network side is a target BS; In WCDMA (WCDMA) system, the source network side is source radio network controller (RNC), and the objective network side is a Target RNC.Through the preferred embodiment, in the LTE system, switch between the base station and carry out, in the WCDMA system, switch between the RNC and carry out.
Preferably, the terminal comprises machine class communication equipment (MTC equipment) and/or person to person's communication equipment (H2H equipment).
Need to prove that the objective network lateral root implements to admit control according to QoS, can satisfy the resource requirement of the RAB of setting up at the terminal in order to ensure the objective network side.The objective network side implements to admit control to be meant that the objective network side is in the decision-making of considering to make after access control demand or the overload demand for control of core net to it, self the demand of load condition and/or operation and maintenance server that whether allows said terminal to insert according to the attribute information at terminal.If it is successful that the objective network side is implemented to admit control according to the attribute information at terminal; Be that feeling the pulse with the finger-tip mark network side allows the terminal of this attribute to insert; The objective network side also is successful according to QoS enforcement admittance control simultaneously, then sends the Handover Request Acknowledge signaling to the source network side; If the objective network side implements to admit control to fail according to the attribute information at terminal, then send to switch and prepare failed signaling to the source network side.
Embodiment one
Present embodiment is based on the LTE system, and the network topology of LTE system is as shown in Figure 1, has the S1 interface between base station and the core network element MME, has X2 interface between the base stations neighboring.
In the present embodiment, base station 1 is the source network side for source base station, and base station 2 is the objective network side for target BS.1 jurisdiction district is in connection status to MTC equipment in the base station; The MTC equipment that this MTC equipment is low priority or this equipment access network are that low priority inserts, and low priority or low priority access here is that network side and MTC equipment are made an appointment or refers to that MTC equipment is set to low priority in advance.Low priority can be divided according to the type at terminal here; As the terminal that MTC equipment is low priority is set; Common H2H equipment is the terminal of normal priority; Can introduce more eurypalynous terminal later on, the priority at terminal is divided into thinner scene, such as dividing the terminal that surpasses two priority; Perhaps confirm priority according to the Business Nature of MTC equipment; For the ammeter Terminal Type; The business of initiating is mainly used in the scale value of indication electric meter; To the indication of network side indication low priority, and other are like MTC equipment of monitoring or alarm when access network for such MTC equipment, when access network to the indication of network side indication normal priority.
MTC equipment needs to measure adjacent sub-district in base station 1, move so that realize.Handover decisions is made in base station 1 behind the signal quality of receiving the neighbor cell that MTC equipment the reports measurement report higher than predetermined threshold, the Target cell of switching is positioned at base station 2, and the flow process of switching is as shown in Figure 4:
Step S401, source base station sends handoff request (Handover Request) to target BS.
There is X2 interface between source base station and the target BS here.In handoff request, comprise service quality (QoS, the Quality of Service) parameter of the RAB (E-RAB, E-UTRAN Radio Access Bearer) that MTC equipment sets up and at the configuration information of cell-of-origin etc.In order to realize the present invention, also comprise the information that characterizes the MTC device attribute in the handoff request, in the present embodiment, the information that characterizes the MTC device attribute adopts the priority of MTC equipment to represent, refers to the sign or the sequence number of low priority here.If represent the attribute of MTC equipment with sequence number, then this sequence number is the sequence number that this MTC equipment of expression of making an appointment is low priority.
Step S402; After target BS is received handoff request; Attribute according to qos parameter that comprises in the handoff request and MTC equipment is carried out admittance control (Admission Control); Implementing to admit control according to qos parameter is to guarantee have enough resources to use after MTC equipment inserts target BS, can after switching, satisfy the requirement of QoS; Implementing to admit control according to the attribute of MTC equipment is to guarantee that different access network elements (referring to the base station here) can adopt different access strategies.Different base stations possibly connect different core network element (MME) on the one hand, and different MME can send different access restricted informations to the base station, and the access restricted information that sends to base station 2 like MME in the present embodiment is not allow the MTC equipment of low priority to insert; The residing load of different base stations is different on the other hand, and different access strategies can be taked according to load in the base station; The base station need consider that (Operation&Management, demand OAM) implements to admit control to the terminal for consistency operation and the maintenance server of its connection in addition.In the present embodiment; Although the load of Target cell (belonging to base station 2) is not high; Have enough this MTC equipment of resource assurance to set up the qos parameter of E-RAB, but the MME that base station 2 is connected does not allow the MTC equipment of low priority to insert, so in the present embodiment; Base station 2 does not allow the MTC equipment of low priority to insert, and admits the control failure.
Step S403, target BS send to switch to source base station and prepare failure (Handover Preparation Failure), and this failed signaling also comprises the reason that does not allow low priority MTC equipment to insert.
After step S404, source base station receive and switch the preparation failure, know that target BS does not allow the MTC equipment of low priority to insert, and then avoids sending the handoff request signaling to this base station again.Because this MTC equipment need move, the sub-district that source base station is selected to be under the jurisdiction of base station 3 from the measurement report that this MTC equipment reports is as Target cell, and this moment, base station 3 became target BS.Source base station sends handoff request to base station 3.Comprise the QoS parameter of the RAB that MTC equipment sets up in the handoff request and at the configuration information of cell-of-origin etc.In order to realize the present invention, also comprise the information that characterizes the MTC device attribute in the handoff request, in the present embodiment, the information that characterizes the MTC device attribute adopts the priority of MTC equipment to represent, refers to the sign or the sequence number of low priority here.
Step S405; After target BS is received handoff request; Attribute according to qos parameter that comprises in the handoff request and MTC equipment is carried out access control, and implementing to admit control according to qos parameter is to guarantee have enough resources to use after MTC equipment inserts target BS, can satisfy the requirement of QoS; Implementing to admit control according to the attribute of MTC equipment is to guarantee that different access network elements can adopt different access strategies.In the present embodiment, MME that base station 3 is connected allows the MTC equipment of all priority to insert, and the load of base station 3 self is low can to allow new MTC equipment to insert.Therefore the admittance of the 3 pairs of handoff request in base station control is successful.
Step S406, Handover Request Acknowledge (Handover Request Acknowledge) signaling is sent to source base station in base station 3, and this Handover Request Acknowledge signaling comprises base station 3 and is the resource information of MTC devices allocation.
After step S407, source base station receive the Handover Request Acknowledge signaling, send switching command to MTC equipment.
In prior LTE system, source base station connects reconfiguration message through RRC and carries mobile control information (mobilityControl Info) to MTC equipment transmission switching command.
Step S408, MTC obtain with Target cell synchronously, initiate to insert at random at Target cell, send to switch to target BS and accomplish signaling (RRC connect reshuffle completion), so far, MTC equipment switches to Target cell.
In the present embodiment, target BS is known the attribute information of the MTC equipment of access through handoff request, can implement in view of the above to admit control, avoids the terminal to switch to the switching once more that inappropriate objective network side causes or connect and discharges.
In the present embodiment, the attribute of MTC equipment is meant the precedence information of MTC equipment, and the priority of MTC equipment can be divided into two-stage or multistage, as can being divided into low priority and normal priority, or low priority, normal priority and high priority etc.Different access network elements can be taked different Access Control Policys to the MTC equipment of different priorities.Whether the attribute of MTC equipment also can be other information that characterize the terminal, as being MTC equipment (type information that promptly refers to the terminal);
The perhaps grouping information at terminal, different MTC equipment belong to different group Group, and each group has specific group id or group sequence number;
Perhaps professional precedence information is set up at the terminal, refers to that the terminal set up professional priority tag, the priority sequence number of the business of being made an appointment by network side and subscriber equipment or the priority tag of business;
Perhaps the business model information set up of terminal refers to professional data communication model information, comprises one or more combination of following characteristics: data interaction periodicity, data interaction frequency, data volume are big or small;
Perhaps the access grade at terminal (Access Class) information refers to that the access grade at terminal identifies, and the access grade sequence number or the access grade of being made an appointment by network side and subscriber equipment identify;
The perhaps information of terminal roaming; Refer to whether the terminal is the terminal of roaming; Perhaps the signatory public land mobile network of indicating terminal identifies; Perhaps HPLMN of indicating terminal (Home Public Land Mobile Network, home public land mobile network) and/or EHPLMN (Equivalent Home PLMN, equivalent home public land mobile network).
Different access network elements can be taked different access strategies to the attribute at terminal, can implement in view of the above to admit control behind the attribute information at objective network side acquisition terminal, avoids inserting inappropriate terminal.Simultaneously can take the different resources allocation strategy in view of the above; Such as MTC equipment for low priority; The objective network side is that it is pre-configured or reserved resource is just less, as long as can satisfy its minimum QoS demand, can not seize the resource of other-end this moment; MTC equipment for normal priority or high priority; The objective network side is that it is pre-configured or reserved resource is just sufficient; Can satisfy the demand of its QoS fully; As comprising Maximum Bit Rate (Maximum Bit Rate) among the QoS, the objective network side is its reserved resource according to Maximum Bit Rate, and can seize the resource at other low priority terminals.
In the present embodiment, send hand off signaling through X2 interface between the base station, if there is not X2 interface between the base station, then transmit hand off signaling through core net between the base station, the said method of present embodiment is suitable equally.Comprise terminal attributive information through core net to the handoff request signaling of target BS transmission, the objective network side implements to admit control and resource allocation in view of the above.
Embodiment two
Present embodiment is based on the WCDMA system; The network topology of WCDMA system is as shown in Figure 2; Radio network controller (Radio Network Controller; Abbreviate RNC as) link to each other with core network element respectively through the lu interface, have l ur interface between the RNC, RNC and its are had jurisdiction over and are had the lub interface between the base station.
In the present embodiment, RNC1 is the source network side for source RNC, and RNC2 is that Target RNC is the objective network side.MTC equipment is in connection status in the RNC1 jurisdiction district; Business wireless access load-bearing (the Radio AccessBearer that this MTC equipment is set up; Abbreviate RAB as) be normal priority, divide like time tolerance according to business, professional for ammeter; Its professional time tolerance is longer, and then the business of the MTC equipment of ammeter class foundation is a low priority; For watch-dog, its business is not the time tolerance, need set up professional reported data immediately, and then the business of watch-dog initiation is normal priority or high priority.In the present embodiment normal priority is that network side and MTC equipment are predetermined in advance, and the business that this MTC equipment initiates to set up is normal priority; Perhaps network side is a normal priority for the service priority of its distribution.Although having the parameter of expression service priority in the existing protocol is ARP (the Allocation and Retention Priority among the QoS; Distribute and keep priority); But, need the sign of the normal priority of newly-increased expression MTC foundation in order to represent the difference between MTC equipment and the H2H equipment; The business that (being the agreement agreement) the value representation MTC equipment of certain ARP of perhaps making an appointment between network side and the MTC equipment is set up is a normal priority; This moment, agreement need be set ARP and the professional mapping relations of MTC equipment foundation; Like Priority cell among the agreement regulation ARP; When its value was 1, expression was that the business that MTC equipment is set up is a normal priority.
MTC equipment needs to measure adjacent sub-district in RNC1, move so that realize.RNC1 makes handover decisions behind the signal quality of receiving the neighbor cell that MTC equipment the reports measurement report higher than predetermined threshold, the Target cell of switching is positioned at RNC2, and the flow process of switching is as shown in Figure 5:
Step S501, source network side direction objective network side is sent re-positioning request (Relocation Request),, has l ur interface between source RNC and the Target RNC here.In re-positioning request, comprise service quality (QoS, the Quality ofService) parameter of the RAB that MTC equipment sets up and at the configuration information of cell-of-origin etc.In order to realize the present invention, also comprise the information that characterizes the MTC device attribute in the re-positioning request, in the present embodiment, the information that characterizes the MTC device attribute refers to that MTC sets up the sign of professional normal priority.
Step S502; After the objective network side is received re-positioning request; Carry out admittance control according to the attribute of qos parameter that comprises in the re-positioning request and MTC equipment; Implementing access control according to qos parameter is to guarantee that MTC equipment inserts the objective network rear flank and has enough resources to use, and can satisfy the requirement of QoS; Implementing to admit control according to the attribute of MTC equipment is to guarantee that different access network elements can adopt different access strategies.In the present embodiment, the core network element that Target RNC connected allows to set up the professional MTC equipment of normal priority and inserts, and the load of Target RNC self is low can to allow new MTC equipment to insert.Therefore Target RNC is successful to the admittance control of re-positioning request.The objective network side also can be taked the different resources allocation strategy according to the attribute of MTC equipment; The business of MTC equipment foundation here is a normal priority; The objective network side can be its Resources allocation according to Maximum Bit Rate when Resources allocation; When if resource is not enough, can also seize the resource of the MTC equipment of low priority.
Step S503, objective network side direction source network side is sent relocation response (Relocation Response) signaling, and this relocation response signaling comprises the resource information that the objective network side is the MTC devices allocation.
Step S504 after the source network side is received the relocation response signaling, sends switching command to MTC equipment.
In existing WCDMA system, the source network side is sent switching command through the RAB reconfiguration message to MTC equipment.
Step S505, MTC equipment obtain with Target cell synchronously, send to switch to Target RNC and accomplish signaling (RAB is reshuffled and accomplished signaling), so far, MTC equipment switches to Target cell.
In the present embodiment; The attribute of MTC equipment is meant the professional precedence information of MTC equipment foundation; MTC equipment is set up professional priority can be divided into two-stage or multistage, as can being divided into low priority and normal priority, or low priority, normal priority and high priority etc.The network element of different Access Networks can be taked different Access Control Policys to different business priority.Whether the attribute of MTC equipment also can be other information that characterize the terminal, as being MTC equipment (type information that promptly refers to the terminal);
Or the type of service at terminal, what be meant the terminal initiation is data service or signaling traffic; Or the data service or the signaling traffic of initiating because of network side paging; Or whether the terminal initiation is tolerable business of time; Or whether the terminal initiation is the business (Small Data) of small data quantity;
The perhaps grouping information at terminal;
Perhaps the business model information set up of terminal refers to professional data communication model information, comprises one or more combination of following characteristics: data interaction periodicity, data interaction frequency, data volume are big or small;
The perhaps access grade at terminal (Access Class) information;
The perhaps information of terminal roaming; Refer to whether the terminal is the terminal of roaming; Perhaps the signatory public land mobile network of indicating terminal identifies; Perhaps the HPLMN of indicating terminal sign (Home Public Land Mobile Network, home public land mobile network) and/or EHPLMN identify (Equivalent Home PLMN, equivalent home public land mobile network).
Different access network elements can be taked different access strategies to the attribute at terminal, can implement in view of the above to admit control behind the attribute information at objective network side acquisition terminal, avoids inserting inappropriate terminal.Simultaneously can take the different resources allocation strategy in view of the above.
In the present embodiment, transmit hand off signaling through l ur interface between the RNC, if there is not l ur interface between the RNC, then transmit hand off signaling through core net between the RNC, the said method of present embodiment is suitable equally.
Embodiment three
Present embodiment is based on the network topology of LTE system, and the network topology of LTE system is as shown in Figure 1, has the S1 interface between base station and the core network element MME, has X2 interface between the base stations neighboring.
In the present embodiment, base station 1 is the source network side for source base station, and base station 2 is the objective network side for target BS.1 jurisdiction district is in connection status to MTC equipment in the base station; This MTC equipment is the MTC equipment of roaming; In the Subscriber Identity Module (Universal Subscriber Identity Module abbreviates USIM as) of MTC equipment, preserve home public land mobile network HPLMN network identity, or also preserved equivalent home public land mobile network EHPLMN sign; The network of the current access of this MTC equipment (refers to the network that 1 jurisdiction district, base station is affiliated; In the system message of this sub-district, broadcasted the PLMN sign of belonging network) neither HPLMN, neither EHPLMN, so this MTC equipment is roamed.MTC equipment needs to measure adjacent sub-district in base station 1, move so that realize.Handover decisions is made in base station 1 behind the measurement report of the signal quality of receiving the neighbor cell that MTC equipment reports than the high predetermined offset of signal quality of Serving cell, the Target cell of switching is positioned at base station 2, and the flow process of switching is as shown in Figure 6:
Step S601, source base station sends handoff request (Handover Request) to target BS.
There is X2 interface between source base station and the target BS here.In handoff request, comprise service quality (QoS, the Quality of Service) parameter of the RAB (E-RAB, E-UTRAN Radio Access Bearer) that MTC equipment sets up and at the configuration information of cell-of-origin etc.In order to realize the present invention, also comprise the information that characterizes the MTC device attribute in the handoff request, in the present embodiment, the information that characterizes the MTC device attribute adopts the sign of roaming to represent; Perhaps also can increase the HPLMN sign that cell representes that this MTC equipment is signatory newly; Perhaps newly-increased cell is represented HPLMN sign and the EHPLMN sign that this MTC equipment is signatory.Source base station can obtain signatory HPLMN of this MTC equipment and EHPLMN sign from core net, perhaps from the information that MTC equipment reports, obtains.
Step S602 after target BS is received handoff request, carries out admittance control according to the attribute of qos parameter that comprises in the handoff request and MTC equipment, and implementing to admit control according to qos parameter is to have enough resources to use after assurance MTC equipment inserts target BS; Implementing to admit control according to the attribute of MTC equipment is to guarantee that different access network elements can adopt different access strategies and take the different resources allocation strategy in view of the above.In the present embodiment, the MME that base station 2 is connected is not because the restriction of load allows the MTC equipment access of roaming.Therefore after base station 2 knows that to be switched MTC equipment is the MTC of roaming, make and do not allow the handover decisions switched.The admittance of handoff request control is this time failed.
Step S603, target BS send to switch is prepared failure (Handover Preparation Failure) signaling to source base station, and this failed signaling comprises the reason that the terminal that do not allow to roam is inserted.
After source base station was received and switched the signaling of preparing failure, the sub-district that need seek other was as the candidate cell that switches, and handoff request is sent in the base station under other sub-districts then.
In the present embodiment; The attribute information at terminal adopts the sign of roaming to represent, also can be the type information at terminal, perhaps the grouping information at terminal; The perhaps precedence information at terminal; Perhaps professional precedence information is set up at the terminal, perhaps the business model information of terminal foundation, perhaps the access grade information at terminal.If the objective network side does not allow corresponding terminal to insert; The reason that then in switching the signaling of preparing failure, comprises the terminal access that does not allow the type; The reason that perhaps comprises the terminal access that does not allow this group; The reason that perhaps comprises the terminal access that does not allow predetermined priority; Perhaps comprise the reason that the terminal that do not allow intended service priority is inserted, perhaps comprise the reason that the terminal that do not allow the intended service model is inserted, perhaps comprise the reason that the terminal that do not allow predetermined access grade is inserted.
Need to prove that present embodiment is an object with MTC equipment, acceptance controlling method can be extended to common terminal and promptly comprise H2H equipment.Present embodiment is example with LTE, and this method also can expand to WCDMA system and GERAN system.
Present embodiment provides a kind of objective network side, and Fig. 7 is the structured flowchart according to the objective network side of the embodiment of the invention, and is as shown in Figure 7, and this switching target network side comprises: receiver module 72 and control module 74 are elaborated in the face of said structure down:
Receiver module 72 is used for the handoff request signaling that the reception sources network side sends, and wherein demand signalling includes the attribute information at terminal and the QoS parameter of RAB; Control module 74 is connected to receiver module 72, and the attribute information and the QoS parameter that are used for receiving according to receiver module carry out hand-off process.
Preferably, attribute information comprises one of following or its combination: the business model information that professional precedence information, terminal set up, the access grade information at terminal, the information of terminal roaming are set up in the grouping information at the type information at terminal, the type of service at terminal, terminal, the precedence information at terminal, terminal.
Fig. 8 is the objective network side preferred construction block diagram according to the embodiment of the invention; As shown in Figure 8; Control module comprises: judge that submodule 741, first definite submodule 742, second definite submodule 743, first sends submodule 744, second and sends submodule 745, face said structure down and be elaborated:
Control module 74 comprises: judge submodule 741, be used for judging whether to allow the corresponding terminal of this attribute information to switch according to one of following or its combination: core net is to the access control demand of objective network side or overload demand for control, the load condition of objective network side, the demand of operation and maintenance server; First confirms submodule 742, is connected to and judges submodule 741, be used for first judge submodule 741 judged result for being, and when satisfying the QoS parameter demand, confirm that the said terminal of permission switches; Second confirms that submodule 743, the first judges submodules 741, be used for first judge submodule 741 judged result for not the time, confirm that the refusal terminal switches.
Control module 74 comprises: first sends submodule 744, is connected to first and confirms submodule 742, is used for when first confirms that submodule confirms to allow the terminal to switch, sending the Handover Request Acknowledge signaling to the source network side; Second sends submodule 745, is connected to second and confirms submodule 743, is used for when second confirms that submodule 743 confirms that refusal switches, and sends to switch to the source network side and prepares failed signaling.
Fig. 9 is the structured flowchart according to the source network side of the embodiment of the invention, and is as shown in Figure 9, and this source network side comprises sending module 92, is elaborated in the face of said structure down.
Sending module 92 is used for sending the handoff request signaling to the objective network side, and wherein demand signalling includes the attribute information at terminal.
Figure 10 is the structured flowchart according to the acceptance control system of the embodiment of the invention; This system comprises: source network side 2 and objective network side 4; Source network side 2 structures are as shown in Figure 9, and the structure of objective network side 4 is elaborated in the face of said structure down shown in Fig. 7 or 8.
Through above-mentioned preferred embodiment; A kind of acceptance controlling method, Apparatus and system are provided; Receive the handoff request signaling of the attribute information that carries the terminal through the objective network side from the source network side joint, admit control according to attribute information and quality of service information then.Overcome the problem that possibly cause network over loading when switch at the terminal in the correlation technique, reduced the switchable load of network, improved stability of network.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. an acceptance controlling method is characterized in that, comprising:
The objective network side joint is received the handoff request signaling that the source network side is sent, and wherein said demand signalling comprises the attribute information at terminal and the QoS parameter of RAB;
Said objective network lateral root is admitted control according to said attribute information and said QoS parameter.
2. method according to claim 1 is characterized in that, said attribute information comprises one of following or its combination:
Professional precedence information, the business model information of said terminal foundation, the access grade information at said terminal, the information of said terminal roaming are set up in the precedence information at the type information at terminal, the type of service at said terminal, the grouping information at said terminal, said terminal, said terminal.
3. method according to claim 1 is characterized in that, said objective network lateral root admits control to comprise according to said attribute information and said QoS parameter:
Said objective network lateral root according to this one of down or its combination judge whether to allow the corresponding terminal of said attribute information to switch: core net is to the access control demand of said objective network side or overload demand for control, the load condition of said objective network side, the demand of operation and maintenance server;
If judged result is for being, and satisfy the demand of said QoS parameter, then said objective network side confirms to allow said terminal to switch, otherwise, confirm that the said terminal of refusal switches.
4. method according to claim 3 is characterized in that,
After said objective network side confirms that the said terminal of permission is switched, also comprise: the said source network side of said objective network side direction is sent the Handover Request Acknowledge signaling;
After said objective network side confirms that the said terminal of refusal is switched, also comprise: the said source network side of said objective network side direction is sent to switch and is prepared failed signaling.
5. method according to claim 4 is characterized in that, said switching prepares to carry in the failed signaling reason of handoff failure, and it is one of following that said reason comprises:
Do not allow the reason of the terminal access of said type information; Do not allow the reason of the terminal access of said grouping information; Do not allow the reason of the terminal access of said precedence information; The reason that does not allow the said terminal of setting up professional precedence information to insert, the reason that does not allow the terminal of the business model information of said foundation to insert, the reason that does not allow the terminal of said access grade information to insert.
6. according to claim 1 or 4 described methods, it is characterized in that in broadband CDMA system WCDMA, said handoff request signaling is the re-positioning request signaling, it is that failed signaling is prepared in reorientation that failed signaling is prepared in said switching.
7. method according to claim 1 is characterized in that, the handoff request signaling that said objective network side joint is received the transmission of source network side comprises: said objective network side receives the handoff request signaling that said source network side is sent through direct interface; Or said objective network side receives the handoff request signaling that said source network side is sent through core net.
8. according to each described method among the claim 1-5, it is characterized in that,
In Long Term Evolution LTE system, said source network side is a source base station, and said objective network side is a target BS;
In broadband CDMA system, said source network side is a source radio network controller, and said objective network side is a target radio network controller;
Said terminal comprises: machine class communication equipment and/or person to person's communication equipment.
9. an objective network side is characterized in that, comprising:
Receiver module is used for the handoff request signaling that the reception sources network side sends, and wherein said demand signalling includes the attribute information at said terminal and the QoS parameter of RAB;
Control module is used for admitting control according to said attribute information and said QoS parameter.
10. objective network side according to claim 9 is characterized in that, said attribute information comprises one of following or its combination:
Professional precedence information, the business model information of said terminal foundation, the access grade information at said terminal, the information of said terminal roaming are set up in the precedence information at the type information at said terminal, the type of service at said terminal, the grouping information at said terminal, said terminal, said terminal.
11. objective network side according to claim 9 is characterized in that, said control module comprises:
Judge submodule, be used for judging whether to allow the corresponding terminal of said attribute information to switch according to one of following or its combination: core net is to the access control demand of said objective network side or overload demand for control, the load condition of said objective network side, the demand of operation and maintenance server;
First confirms submodule, is used in the judged result of said judgement submodule for being, and when satisfying the demand of said QoS parameter, confirms that the said terminal of permission switches;
Second confirms submodule, is used in the judged result of said judgement submodule for not the time, confirms that the said terminal of refusal switches.
12. objective network side according to claim 9 is characterized in that, said control module also comprises:
First sends submodule, is used for sending the Handover Request Acknowledge signaling to said source network side;
Second sends submodule, is used for sending switching to said source network side and prepares failed signaling.
13. a source network side is characterized in that, comprising: sending module, be used for sending the handoff request signaling to the objective network side,
Wherein said demand signalling includes the attribute information at said terminal.
14. a switching processing system is characterized in that, comprising: source network side as claimed in claim 13 and like each described objective network side in the claim 9 to 12.
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| PCT/CN2011/078498 WO2012058966A1 (en) | 2010-11-05 | 2011-08-16 | Admission control method, target network, source network, and handover processing system |
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