CN100459770C - Method for improving interface bandwidth utilization rate between wireless network controller and base-station - Google Patents
Method for improving interface bandwidth utilization rate between wireless network controller and base-station Download PDFInfo
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Abstract
The method comprises: RNC monitors the Iub interface bandwidth resources of each NodeB under its own control, and confirms the bandwidth resources occupation state of Iub interface; if the Iub interface bandwidth of NodeB is confirmed at the congestion state, then the SVC is established between the RNC and the congested NodeB; if the Iub interface bandwidth resources is confirmed at excess state, then releasing the SVC between RNC and NodeB having excessive bandwidth resources.
Description
Technical field
The present invention relates to the wireless network resource management technology, be meant the method for the Iub interface bandwidth usage efficient between a kind of raising radio network controller (RNC) and base station (NodeB) especially.
Background technology
The transmission group net of the Iub interface between RNC and the NodeB as shown in Figure 1, between RNC and each NodeB mainly with star, chain and tree structure networking, Iub interface can use synchronous digital hierarchy (SDH) transmission network, and each NodeB is connected with RNC by transmission equipments such as ATM switch or optical network devices.
In the networking structure of RNC and NodeB, the transmission bandwidth that entire I ub interface is required is exactly the summation of the required bandwidth of all NodeB as shown in Figure 1.Generally, the Iub transmission network is leased, and accounts for larger proportion in operation cost, therefore, need reduce Iub bandwidth cost as far as possible,, need improve Iub bandwidth usage efficient as far as possible that is, and this is a key technology in the wireless network resource management.
In the prior art, connect with permanent virtual circuit (pvc) between each NodeB and the RNC, the quantity of PVC and bandwidth determine that according to the traffic peak of each NodeB the transmission bandwidth of Iub interface is by quantity and the bandwidth decision of these PVC.
The quantity of PVC and bandwidth are to determine according to the traffic peak of each NodeB, and are normally finished by human configuration when beginning, and in a single day these PVC build up, no matter whether transfer of data is arranged, it all keeps connecting.And the traffic carrying capacity of each NodeB size all is at times usually, and for example, the intensive shopping centre time traffic carrying capacity that is on duty is big, festivals or holidays traffic carrying capacity little; And for the residential quarter, big in the quitting time traffic carrying capacity, the time traffic carrying capacity that is on duty is little.Therefore,,, then, can waste the PVC resource, cause the waste of Iub interface transmission bandwidth in some few periods of telephone traffic if set up PVC according to maximum telephone traffic for the clearly different in time NodeB of telephone traffic size.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that improves Iub interface bandwidth usage efficient, allows a plurality of NodeB share I ub interface transmission bandwidths, thereby reduces the waste of Iub interface transmission bandwidth.
In order to achieve the above object, the invention provides the method for Iub interface bandwidth usage efficient between a kind of RNC of raising and the NodeB, use switched virtual circuit (SVC) SVC transmission user face data in Iub interface, this method comprises:
RNC monitoring self control is the Iub interface bandwidth resources of each NodeB down, determine Iub interface bandwidth resources seizure condition, if it is congested to define the Iub interface bandwidth resources of NodeB, then set up SVC between the congested NodeB of RNC and described bandwidth resources; If it is unnecessary to define the Iub interface bandwidth resources of NodeB, then discharge the SVC between the unnecessary NodeB of RNC and described bandwidth resources.
Described RNC monitoring self the control Iub interface bandwidth resources of each NodeB down is that: RNC obtains the Iub interface bandwidth resources of distributing to each NodeB, obtains the Iub interface bandwidth resources that each NodeB is using according to the actual volume of each NodeB;
Described definite Iub interface bandwidth resources seizure condition is: utilize Iub interface bandwidth resources that resulting NodeB using and the Iub interface bandwidth resources of having distributed to this NodeB, determine the Iub interface bandwidth resources seizure condition of this NodeB.
The step of described definite Iub interface bandwidth resources seizure condition comprises:
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB; Whether judge the idle Iub interface bandwidth resources that calculate less than the threshold value that is provided with, if determine that then the Iub interface bandwidth resources are congested; Otherwise determine that the Iub interface bandwidth resources are unnecessary;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB, and utilize described idle Iub interface bandwidth resources and the idle ratio of the Iub interface bandwidth resources calculating Iub interface bandwidth resources of having distributed; Whether judge the idle ratio that calculates less than the ratio threshold value that is provided with, if determine that then the Iub interface bandwidth resources are congested; Otherwise, determine that the Iub interface bandwidth resources are unnecessary;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of using and having distributed are calculated the ratio that takies of Iub interface bandwidth resources; Whether what judgement calculated takies ratio greater than the ratio threshold value that is provided with, if determine that then the Iub interface bandwidth resources are congested; Otherwise, determine that the Iub interface bandwidth resources are unnecessary.
The step of described definite Iub interface bandwidth resources seizure condition comprises:
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB; The idle Iub interface bandwidth resources that calculate are compared with minimum threshold that is provided with and high threshold respectively, if idle Iub interface bandwidth resources less than described minimum threshold, then definite Iub interface bandwidth resources are congested; If idle Iub interface bandwidth resources, determine then that the Iub interface bandwidth resources are unnecessary greater than described high threshold; This method further comprises: if idle Iub interface bandwidth resources are then determined the Iub interface bandwidth resources just in time more than or equal to described minimum threshold and smaller or equal to described high threshold, keep the SVC between RNC and the described bandwidth resources NodeB just in time; Wherein, described minimum threshold guarantees to insert a user at least, and described high threshold is at least greater than the bandwidth of a SVC;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB, and utilize described idle Iub interface bandwidth resources and the idle ratio of the Iub interface bandwidth resources computation bandwidth resource of having distributed; The idle ratio that calculates is compared with the highest idle ratio thresholding with the minimum idle ratio thresholding that is provided with respectively, if idle ratio, determines then that the Iub interface bandwidth resources are congested less than described minimum idle ratio thresholding; If idle ratio, determines then that the Iub interface bandwidth resources are unnecessary greater than the highest described idle ratio thresholding; This method further comprises: if idle ratio more than or equal to described minimum idle ratio thresholding and smaller or equal to the highest described idle ratio thresholding, is then determined the Iub interface bandwidth resources just in time, keep the SVC between RNC and the described bandwidth resources NodeB just in time; Wherein, the corresponding idle bandwidth resource of described minimum idle ratio thresholding guarantees to insert a user at least, and the corresponding idle bandwidth resource of the highest described idle ratio thresholding is at least greater than the bandwidth of a SVC;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the ratio that takies of Iub interface bandwidth resources; The ratio that takies that calculates is compared with the highest ratio thresholding that takies with the minimum ratio thresholding that takies that is provided with respectively, if take ratio less than the described minimum ratio thresholding that takies, determines that then the Iub interface bandwidth resources are unnecessary; If take ratio, determine that then the Iub interface bandwidth resources are congested greater than the highest described ratio thresholding that takies; This method further comprises: minimum take the ratio thresholding and smaller or equal to the highest described ratio thresholding that takies if take ratio more than or equal to described, then determine the Iub interface bandwidth resources just in time, keep the SVC between RNC and the described bandwidth resources NodeB just in time; Wherein, the described minimum corresponding idle bandwidth resource of ratio thresholding that takies is at least greater than the bandwidth of a SVC, and the highest described corresponding idle bandwidth resource of ratio thresholding that takies guarantees to insert a user at least.
The step of SVC between the congested NodeB of described RNC of foundation and described bandwidth resources comprises:
The VPI/VCI sign of the SVC that the RNC selection will be set up, and, carry the VPI/VCI sign of the SVC that will set up in this request to the request that SVC is set up in the NodeB transmission;
After NodeB received the request of the described SVC of foundation, the VPI/VCI of the SVC that selection will be set up identified, and returned the response of confirming foundation to RNC.
The congested NodeB of RNC and described bandwidth resources further comprises after setting up SVC on the Iub interface: distribute identical ID of trace route path PATH ID for respectively the SVC that is set up.
Described RNC distributes identical PATH ID to be to SVC respectively with NodeB: RNC and NodeB are that SVC generates identical PATH ID according to identical algorithm.
The VPI/VCI sign of RNC and the pre-configured SVC of NodeB and the corresponding relation of PATH ID;
Described RNC distributes the step of identical PATH ID to comprise to SVC respectively with NodeB:
The VPI/VCI sign of the SVC that the RNC selection will be set up, search described corresponding relation according to the VPI/VCI sign of selected SVC and obtain PATH ID, resulting PATH ID is distributed to the selected SVC of RNC, and, carry the VPI/VCI sign of the SVC that will set up in this request to the request that SVC is set up in the NodeB transmission;
After NodeB receives the request of the described SVC of foundation, select to have the SVC of identical VPI/VCI sign with the selected SVC of RNC, and search described corresponding relation according to described VPI/VCI sign and obtain PATHID, resulting PATH ID is distributed to the selected SVC of NodeB.
Described RNC distributes the step of identical PATH ID to comprise to SVC respectively with NodeB:
The VPI/VCI of the SVC that the RNC selection will be set up identifies, and distributes a PATH ID for selected SVC, and sends the request of setting up SVC to NodeB, and the VPI/VCI that carries the SVC that will set up in this request identifies and the PATH ID that is distributed;
After NodeB receives the request of the described SVC of foundation, the VPI/VCI of the SVC that selection will be set up sign, and distribute the described resulting PATH ID in the SVC request message that sets up for this SVC.
The step of SVC between the unnecessary NodeB of described release RNC and bandwidth resources comprises:
Judge whether the SVC of complete free time,, then discharge described complete idle SVC if having; Otherwise, select the SVC of the less user data of carrying, and the user that will be carried on selected SVC is re-assigned on the SVC beyond the selected SVC, discharge selected SVC then.
Described RNC defines the Iub interface bandwidth resources of NodeB when unnecessary, keep the SVC between described RNC and the NodeB earlier, continue monitoring Iub interface bandwidth resources then, if be provided with in the time period, the seizure condition of Iub interface bandwidth resources is unnecessary always, then discharges the SVC between described RNC and the NodeB.
Described user face data is managed by Access Link Control Application Part ALCAP; Described Iub interface bandwidth resources are Asynchronous Transfer Mode adaptation layer 2 path A AL2PATH resources.
The connection of command transmitting uses permanent virtual circuit PVC to connect with being connected of transmission NodeB Operation and Maintenance in Iub interface.
Described monitoring is: monitoring before the user inserts each time, perhaps monitoring after the user inserts each time is perhaps with periodic time interval monitoring.
The connection of described transmission user face data is used between each NodeB that SVC connects with chain or tree structure networking.
According to method provided by the invention, RNC is according to the following actual volume of each NodeB of self control, dynamically distributes between a plurality of NodeB and discharges SVC, makes a plurality of NodeB share I ub interface transmission bandwidths, the utilization ratio of raising Iub interface transmission bandwidth; And can determine quantity and the bandwidth of SVC by the traffic peak of each NodeB during beginning, thereby reduce the waste of Iub interface transmission bandwidth resource.Especially, at distribution of traffic big intensive business district, the residential block of difference in time, the effect that the method for utilizing dynamic assignment and discharging SVC improves bandwidth usage efficient is more obvious.And RNC is that the SVC that is set up distributes identical PATH ID with NodeB, makes it possible to correctly set up the little connection of AAL2 to the user.
Description of drawings
Figure 1 shows that Iub interface transmission group net structure chart in the prior art;
Figure 2 shows that the flow chart of dynamically setting up and discharge SVC in the embodiment of the invention one;
Dynamically set up and discharge the flow chart of SVC when Figure 3 shows that in the embodiment of the invention two with ALCAP leading subscriber face data.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, lift specific embodiment below, the present invention is further detailed explanation.
In order to improve Iub interface bandwidth usage efficient, allow a plurality of NodeB share I ub interface transmission bandwidths among the present invention, redistribute bandwidth resources in real time according to the bandwidth needs of each NodeB.Need connect with chain or tree structure between the NodeB of described share I ub interface transmission bandwidth, wherein, node NodeB need have hub (HUB) function, and this also is present common networking mode.
Be useful in the Iub interface command transmitting connection, be used for the NodeB Operation and Maintenance connection be used for being connected of transmission user face data.And ATM connects and to be divided into two kinds of PVC and switched virtual circuit (SVC)s (SVC): PVC is a kind of static virtual connections, sets up and discharges PVC by the Operation and Maintenance of craft, and its advantage is, needn't per call all carry out the virtual connections configuration, keeps forever connecting; SVC is a kind of dynamic virtual connections, and the program control by system is set up and discharged SVC, and therefore, the SVC resource of can distributing according to need is compared with PVC and to be had higher QoS adaptability and bandwidth availability ratio.
According to above analysis, among the present invention, the connection that is used for command transmitting uses PVC to connect with being used for being connected of NodeB Operation and Maintenance, forever online with the permanent unimpeded and NodeB that keeps signaling; Be used for the connection of transmission user face data, dynamically set up and discharge SVC according to the needs of traffic carrying capacity, sharing SVC resource, i.e. share I ub transmission bandwidth by a plurality of NodeB.
In ATM, VPI (VPI is all used in the ATM connection, Virtual Path Identifier) and VCI (VCI, Virtual Connection Identifier) sign, wherein, VPI is the sign of Virtual Channel (VP), and VCI is the sign of virtual path (VC), and plurality of V C forms a VP.Therefore, the SVC that is used for transmission user face data among the present invention identifies with VPI/VCI.
Embodiment one:
For the transmission of user face data dynamically set up and the flow process that discharges SVC as shown in Figure 2, comprise following step:
Step 201:RNC monitors in real time and self controls the Iub interface bandwidth resources of each NodeB down, determines the Iub interface bandwidth resources seizure condition of each NodeB, if determine that the Iub interface bandwidth resources of one of them NodeB are congested, then execution in step 202; If determine that the Iub interface bandwidth resources of one of them NodeB are unnecessary, then execution in step 203.
The step of the Iub interface bandwidth resources of each NodeB comprised that: RNC obtains the Iub interface bandwidth resources of having distributed to each NodeB in real time under RNC monitored in real time and self controls, simultaneously, detect the actual volume of each NodeB in real time, calculate the Iub bandwidth resources that each NodeB is using, can also further calculate the idle Iub interface bandwidth resources of each NodeB then, described idle Iub interface bandwidth resources are poor for Iub interface bandwidth resources of having distributed and the Iub interface bandwidth resources of using.Wherein, because each business all inserts from RNC, so RNC can obtain the number of services of the current access of each NodeB, thereby RNC can calculate the Iub bandwidth resources that each NodeB is using; RNC dynamically distributes each NodeB and when discharging SVC, write down the current quantity of distributing to the SVC of each NodeB, thereby RNC can obtain the Iub interface bandwidth resources of having distributed to each NodeB.
At a NodeB, determine that Iub interface bandwidth resources seizure condition is: whether judge the idle bandwidth resource less than a thresholding, if determine that then the Iub interface bandwidth resources are congested, otherwise determine that the Iub interface bandwidth resources are unnecessary; Perhaps, whether the ratio of judging idle bandwidth and the bandwidth resources of having distributed is less than a thresholding, if determine that then the Iub interface bandwidth resources are congested, otherwise determine that the Iub interface bandwidth resources are unnecessary; Perhaps, whether the ratio of judging bandwidth resources of using and the bandwidth resources of having distributed is greater than a thresholding, if determine that then the Iub interface bandwidth resources are congested; Otherwise determine that the Iub interface bandwidth resources are unnecessary.Wherein, thresholding is the value that sets in advance, and can appropriate value be set according to the account of the history of the traffic carrying capacity of each NodeB.
Step 202: set up the new SVC between the NodeB of RNC and described SVC resource congestion, process ends.
Step 203: discharge the SVC between the unnecessary NodeB of RNC and described SVC resource, process ends.
Described foundation and release SVC can finish corresponding operation by User Network Interface (UNI) or Private Network-Node Interface (PNNI) signaling procedure.
The user face data of Iub interface is in charge of and is used by Access Link Control Application Part (ALCAP), and the SVC that will be based upon the ATM layer among the ALCAP represents with atm adaptation layer 2 path (AAL2PATH), and AAL2 PATH identifies with ID of trace route path (PATH ID).AAL2 PATH can carry a plurality of users' business datum, and on Iub interface, user data is by the little connection transmission of AAL2.
Embodiment two:
The method of dynamic foundation and release SVC is an example during below with ALCAP leading subscriber face data, describes the method that improves Iub interface bandwidth resources utilization ratio in detail, and as shown in Figure 3, this method comprises following step:
Step 301:RNC monitors in real time and self controls the AAL2 PATH resource of each NodeB down, determines the seizure condition of AAL2 PATH resource, if determine the AAL2 PATH resource congestion of one of them NodeB, then execution in step 302; If determine that the AAL2 PATH resource of one of them NodeB is unnecessary, then execution in step 303; If the AAL2 PATH resource of definite one of them NodeB just in time, then execution in step 304.
The step of the AAL2 PATH resource of each NodeB was that: RNC obtains the AAL2 PATH resource of having distributed to each NodeB in real time under RNC monitored in real time and self controls, simultaneously, detect the actual volume of each NodeB in real time, calculate the size of the required AAL2 PATH resource of each NodeB, can also further calculate the idle AAL2 PATH resource of each NodeB then.
RNC determines that the step of the AAL2 PATH resource occupation state of a NodeB is: according to the idle AAL2 PATH resource of this NodeB, or the idle AAL2 PATH resource of this NodeB and distributed to the AAL2 PATH resource of this NodeB, or the AAL2 PATH resource used of this NodeB and the AAL2 PATH resource of having distributed to this NodeB, determine the seizure condition of AAL2 PATH resource, be described below respectively:
(1) described idle AAL2 PATH resource is compared with high threshold with minimum threshold respectively, obtains AAL2 PATH resource occupation state, if current idle AAL2 PATH resource, is then thought AAL2 PATH resource congestion less than minimum threshold; If current idle AAL2 PATH resource thinks then that greater than high threshold AAL2 PATH resource is unnecessary; Otherwise, if current idle AAL2 PATH resource thinks then that more than or equal to minimum threshold and smaller or equal to high threshold AAL2 PATH resource is just in time.
Wherein, described minimum threshold and high threshold are the values that sets in advance, and minimum threshold guarantees to insert a user at least, and high threshold is at least greater than AAL2 PATH bandwidth resources.
(2) utilize idle AAL2 PATH resource and the idle ratio of the AAL2 PATH resource computation bandwidth resource of having distributed, described idle ratio is the ratio of the idle AAL2 PATH resource and the AAL2 PATH resource of having distributed, then idle ratio is compared with the highest idle ratio thresholding with minimum idle ratio thresholding respectively, obtain AAL2 PATH resource occupation state, if idle ratio, is then thought AAL2 PATH resource congestion less than minimum idle ratio thresholding; If idle ratio, thinks then that AAL2 PATH resource is unnecessary greater than the highest idle ratio thresholding; Otherwise, if idle ratio, thinks then that AAL2 PATH resource is just in time more than or equal to minimum idle ratio thresholding and smaller or equal to the highest idle ratio thresholding.
Wherein, described minimum idle ratio thresholding and the highest idle ratio thresholding are the rate values that sets in advance, the idle AAL2 PATH resource that minimum idle ratio thresholding is suitable guarantees to insert a user at least, and the suitable idle AAL2 PATH resource of the highest idle ratio thresholding is at least greater than AAL2PATH bandwidth resources.Wherein, the idle AAL2 PATH resource that minimum idle ratio thresholding is suitable multiply by the AAL2 PATH resource that described minimum idle ratio thresholding obtains for the AAL2 PATH resource of having distributed.
(3) utilize the ratio that takies of AAL2 PATH resource using and the AAL2 PATH resource computation bandwidth resource of having distributed, the described ratio that takies ratio for AAL2 PATH resource of using and the AAL2 PATH resource of having distributed, to take ratio then compares with the highest ratio thresholding that takies with the minimum ratio thresholding that takies respectively, obtain AAL2 PATH resource occupation state, if take ratio, then think AAL2 PATH resource congestion greater than the highest ratio thresholding that takies; If take ratio less than the minimum ratio thresholding that takies, think that then AAL2 PATH resource is unnecessary; Otherwise, take the ratio thresholding and, think that then the AAL2PATH resource is just in time more than or equal to minimum smaller or equal to the highest ratio thresholding that takies if take ratio.
Wherein, describedly minimumly take the ratio thresholding and the highest ratio thresholding that takies is the rate value that sets in advance, the highest suitable idle AAL2 PATH resource of ratio thresholding that takies guarantees to insert a user at least, and the minimum suitable idle AAL2 PATH resource of ratio thresholding that takies is at least greater than AAL2PATH bandwidth resources.Wherein, the minimum suitable idle AAL2 PATH resource of ratio thresholding that takies multiply by the described minimum AAL2 PATH resource that the ratio thresholding obtains that takies for deduct the AAL2 PATH resource of having distributed from the AAL2 PATH resource of having distributed.
Step 302: set up the SVC between the NodeB of RNC and AAL2 PATH resource congestion, and distribute identical PATH ID, process ends further for this SVC.Wherein, RNC side and NodeB side identify the SVC that is set up respectively with VPI/VCI.
SVC between RNC and the described NodeB can set up by the UNI/PNNI signaling procedure, and its step comprises:
The first step: RNC selects the VPI/VCI sign of the current SVC that will set up, and sends the request of setting up SVC to NodeB, carries the VPI/VCI sign of the SVC that will set up in this request.
Second step: after NodeB receives the request message of the described SVC of foundation, select the VPI/VCI sign of the current SVC that will set up, and return the response of confirming foundation to RNC.
Set up between RNC and the NodeB in the process of SVC, need distribute identical PATH ID at same SVC, because when between RNC and the NodeB during by ATM switch transmission data, the VPI/VCI of RNC and the employed SVC in NodeB two ends may be different, therefore at a SVC, need to distribute identical PATH ID, when making little connections of the AAL2 that sets up carrying user data, the AAL2 PATH that uses PATH ID to specify the little connection of the AAL2 that will set up to carry.RNC distributes identical PATH ID for the SVC of current foundation with NodeB according to following several method, is described below described respectively:
(1) RNC is that SVC generates identical PATH ID by identical algorithm respectively with NodeB.
Distributing PATH ID for example for first newly-established SVC is 1, and distributing PATH ID for second newly-established SVC is 2 etc., is specially, and the VPI/VCI of first SVC that RNC sets up is VPI=1, VCI=35, and distributing PATH ID for this SVC is 1; The VPI/VCI of first SVC that the NodeB side is set up is VPI=2, VCI=50, and distributing PATH ID for this SVC is 1.
(2) RNC distributes PATH ID for the SVC that is set up, to distribute to the PATHID notice NodeB side of SVC then, NodeB distributes the PATH ID that obtains from RNC for the SVC that is set up, guarantee that RNC and NodeB side are that SVC distributes identical PATH ID, concrete steps are: in the described first step of setting up SVC, after RNC selects the current SVC that will set up, be that this SVC distributes a PATH ID, send to NodeB then and set up in the request of SVC, carry the PATH ID that RNC distributes for this SVC; In described second step of setting up SVC, after NodeB receives the request of the described SVC of foundation, set up the SVC of NodeB side, and distribute resulting PATHID from RNC for this SVC.
For example, the VPI/VCI of the current SVC that sets up of RNC is VPI=1, VCI=35, and to distribute PATH ID for this SVC be 2; The NodeB lateral root is VPI=2, VCI=50 according to the VPI/VCI of the SVC that the request of setting up SVC is set up, and the value of the PATH ID that will obtain from RNC distributes to this SVC, and promptly the PATH ID that distributes for this SVC is 2.
(3) do not have the ATM exchange during data when transmission between RNC and the NodeB, promptly RNC and NodeB two ends SVC identify when identical, can also be that SVC distributes identical PATHID by pre-configured method.Corresponding relation between pre-configured PATH ID of RNC and NodeB and the SVC sign VPI/VCI, RNC and NodeB use and describedly pre-configuredly distribute the step of identical PATH ID to be to SVC: in the first step of the described SVC of foundation, after RNC selects the VPI/VCI of the current SVC that will set up, find out the PATH ID of described VPI/VCI correspondence according to described corresponding relation, and distributing described PATH ID for this SVC, RNC identifies and sends to NodeB by the VPI/VCI that carries the SVC that will set up in the request of setting up SVC; Described set up SVC second the step in, NodeB is according to the VPI/VCI sign of carrying in the RNC request, set up described SVC with described VPI/VCI sign, and search described corresponding relation according to VPI/VCI sign and obtain the corresponding PATH ID of this VPI/VCI sign, for this SVC distributes described PATH ID.
For example, disposing the corresponding relation between VPI/VCI and the PATH ID among RNC and the NodeB respectively, is 3 as the PATH ID of corresponding VPI=1, VCI=35.The VPI/VCI of the current SVC that sets up of RNC is VPI=1, VCI=35, and searches described corresponding relation according to VPI/VCI, and obtaining PATH ID is 3, and giving the SVC distribution PATH ID of current foundation then is 3; The SVC that VPI/VCI is VPI=1, VCI=35 is also set up in the request that NodeB sets up SVC according to the RNC side, and searches described corresponding relation according to VPI/VCI, and obtaining PATH ID is 3, and giving the SVC distribution PATH ID of current foundation then is 3.
The AAL2 the PATH whether complete free time is arranged between the NodeB that step 303:RNC judges and AAL2 PATH resource is unnecessary, if having, execution in step 303-2 then; Otherwise, execution in step 303-1.The AAL2 PATH of described complete free time is meant does not have the corresponding little connection of AAL2 on this AAL2 PATH, user data promptly of no use is carried on this AAL2 PATH.
Step 303-1: select to carry the AAL2 PATH of less user data, and the user that will be carried on this AAL2 PATH reconfigures on other AAL2 PATH beyond the selected AAL2 PATH, make selected AAL2 PATH idle fully.
Step 303-2: discharge the SVC of the complete free time between the unnecessary NodeB of RNC and described AAL2 PATH resource, process ends.
When RNC determines that AAL2 PATH resource is unnecessary, the not necessarily operation of execution in step 303 described release SVC immediately, but RNC can continue to monitor the AAL2 PATH resource occupation state of this NodeB, if the idling-resource of AAL2 PATH resource is a lot of always in a period of time, or idle ratio is very high always, it is very low always perhaps to take ratio, and then execution in step 303, step 303-1 and step 303-2 discharge SVC; Otherwise RNC temporarily keeps the AAL2PATH resource between RNC and this NodeB, promptly keeps current SVC.Wherein, described a period of time is for can reasonably being provided with appropriate value according to the account of the history of the actual volume of each NodeB.
Step 304: keep the SVC between RNC and the AAL2 PATH resource NodeB just in time, process ends.
The operation of step 201, the described RNC of step 301 monitoring in real time and definite bandwidth resources seizure condition can be carried out before the user inserts each time among above-described embodiment one, the embodiment two, perhaps after the user inserts each time, carry out, perhaps carry out with the periodic time interval.
In sum, method according to dynamic assignment provided by the invention and release SVC, when beginning, need not be according to the traffic peak decision PVC of each NodeB and quantity and the bandwidth of SVC, the quantity of PVC and bandwidth guarantee to transmit signaling and the Operation and Maintenance relevant information of each NodeB, and the quantity of SVC and bandwidth can make a plurality of NodeB share the SVC resource according to the decision of the traffic peak in each period, promptly can distribute and discharge SVC in real time according to the bandwidth demand of each NodeB.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1, a kind of method that improves Iub interface bandwidth usage efficient between radio network controller (RNC) and the base station node B is characterized in that, uses switched virtual circuit (SVC) SVC transmission user face data in Iub interface, and this method comprises:
RNC monitoring self control is the Iub interface bandwidth resources of each NodeB down, determine Iub interface bandwidth resources seizure condition, if it is congested to define the Iub interface bandwidth resources of NodeB, then set up SVC between the congested NodeB of RNC and described bandwidth resources; If it is unnecessary to define the Iub interface bandwidth resources of NodeB, then discharge the SVC between the unnecessary NodeB of RNC and described bandwidth resources.
2, method according to claim 1 is characterized in that,
Described RNC monitoring self the control Iub interface bandwidth resources of each NodeB down is that: RNC obtains the Iub interface bandwidth resources of distributing to each NodeB, obtains the Iub interface bandwidth resources that each NodeB is using according to the actual volume of each NodeB;
Described definite Iub interface bandwidth resources seizure condition is: utilize Iub interface bandwidth resources that resulting NodeB using and the Iub interface bandwidth resources of having distributed to this NodeB, determine the Iub interface bandwidth resources seizure condition of this NodeB.
3, method according to claim 2 is characterized in that,
The step of described definite Iub interface bandwidth resources seizure condition comprises:
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB; Whether judge the idle Iub interface bandwidth resources that calculate less than the threshold value that is provided with, if determine that then the Iub interface bandwidth resources are congested; Otherwise determine that the Iub interface bandwidth resources are unnecessary;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB, and utilize described idle Iub interface bandwidth resources and the idle ratio of the Iub interface bandwidth resources calculating Iub interface bandwidth resources of having distributed; Whether judge the idle ratio that calculates less than the ratio threshold value that is provided with, if determine that then the Iub interface bandwidth resources are congested; Otherwise, determine that the Iub interface bandwidth resources are unnecessary;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of using and having distributed are calculated the ratio that takies of Iub interface bandwidth resources; Whether what judgement calculated takies ratio greater than the ratio threshold value that is provided with, if determine that then the Iub interface bandwidth resources are congested; Otherwise, determine that the Iub interface bandwidth resources are unnecessary.
4, method according to claim 2 is characterized in that,
The step of described definite Iub interface bandwidth resources seizure condition comprises:
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB; The idle Iub interface bandwidth resources that calculate are compared with minimum threshold that is provided with and high threshold respectively, if idle Iub interface bandwidth resources less than described minimum threshold, then definite Iub interface bandwidth resources are congested; If idle Iub interface bandwidth resources, determine then that the Iub interface bandwidth resources are unnecessary greater than described high threshold; This method further comprises: if idle Iub interface bandwidth resources are then determined the Iub interface bandwidth resources just in time more than or equal to described minimum threshold and smaller or equal to described high threshold, keep the SVC between RNC and the described bandwidth resources NodeB just in time; Wherein, described minimum threshold guarantees to insert a user at least, and described high threshold is at least greater than the bandwidth of a SVC;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the idle Iub interface bandwidth resources of this NodeB, and utilize described idle Iub interface bandwidth resources and the idle ratio of the Iub interface bandwidth resources computation bandwidth resource of having distributed; The idle ratio that calculates is compared with the highest idle ratio thresholding with the minimum idle ratio thresholding that is provided with respectively, if idle ratio, determines then that the Iub interface bandwidth resources are congested less than described minimum idle ratio thresholding; If idle ratio, determines then that the Iub interface bandwidth resources are unnecessary greater than the highest described idle ratio thresholding; This method further comprises: if idle ratio more than or equal to described minimum idle ratio thresholding and smaller or equal to the highest described idle ratio thresholding, is then determined the Iub interface bandwidth resources just in time, keep the SVC between RNC and the described bandwidth resources NodeB just in time; Wherein, the corresponding idle bandwidth resource of described minimum idle ratio thresholding guarantees to insert a user at least, and the corresponding idle bandwidth resource of the highest described idle ratio thresholding is at least greater than the bandwidth of a SVC;
Perhaps,
The Iub interface bandwidth resources of utilizing the described Iub interface bandwidth resources of having distributed to NodeB and this NodeB using are calculated the ratio that takies of Iub interface bandwidth resources; The ratio that takies that calculates is compared with the highest ratio thresholding that takies with the minimum ratio thresholding that takies that is provided with respectively, if take ratio less than the described minimum ratio thresholding that takies, determines that then the Iub interface bandwidth resources are unnecessary; If take ratio, determine that then the Iub interface bandwidth resources are congested greater than the highest described ratio thresholding that takies; This method further comprises: minimum take the ratio thresholding and smaller or equal to the highest described ratio thresholding that takies if take ratio more than or equal to described, then determine the Iub interface bandwidth resources just in time, keep the SVC between RNC and the described bandwidth resources NodeB just in time; Wherein, the described minimum corresponding idle bandwidth resource of ratio thresholding that takies is at least greater than the bandwidth of a SVC, and the highest described corresponding idle bandwidth resource of ratio thresholding that takies guarantees to insert a user at least.
5, method according to claim 1 is characterized in that, the step of the SVC between the congested NodeB of described RNC of foundation and described bandwidth resources comprises:
The VPI/VCI sign of the SVC that the RNC selection will be set up, and, carry the VPI/VCI sign of the SVC that will set up in this request to the request that SVC is set up in the NodeB transmission;
After NodeB received the request of the described SVC of foundation, the VPI/VCI of the SVC that selection will be set up identified, and returned the response of confirming foundation to RNC.
6, method according to claim 1 is characterized in that,
The congested NodeB of RNC and described bandwidth resources further comprises after setting up SVC on the Iub interface: distribute identical ID of trace route path PATH ID for respectively the SVC that is set up.
7, method according to claim 6 is characterized in that, described RNC distributes identical PATH ID to be to SVC respectively with NodeB: RNC and NodeB are that SVC generates identical PATH ID according to identical algorithm.
8, method according to claim 6 is characterized in that, the VPI/VCI sign of RNC and the pre-configured SVC of NodeB and the corresponding relation of PATH ID;
Described RNC distributes the step of identical PATH ID to comprise to SVC respectively with NodeB:
The VPI/VCI sign of the SVC that the RNC selection will be set up, search described corresponding relation according to the VPI/VCI sign of selected SVC and obtain PATH ID, resulting PATH ID is distributed to the selected SVC of RNC, and, carry the VPI/VCI sign of the SVC that will set up in this request to the request that SVC is set up in the NodeB transmission;
After NodeB receives the request of the described SVC of foundation, select to have the SVC of identical VPI/VCI sign with the selected SVC of RNC, and search described corresponding relation according to described VPI/VCI sign and obtain PATHID, resulting PATH ID is distributed to the selected SVC of NodeB.
9, method according to claim 6 is characterized in that, described RNC distributes the step of identical PATH ID to comprise to SVC respectively with NodeB:
The VPI/VCI of the SVC that the RNC selection will be set up identifies, and distributes a PATH ID for selected SVC, and sends the request of setting up SVC to NodeB, and the VPI/VCI that carries the SVC that will set up in this request identifies and the PATH ID that is distributed;
After NodeB receives the request of the described SVC of foundation, the VPI/VCI of the SVC that selection will be set up sign, and distribute the described resulting PATH ID in the SVC request message that sets up for this SVC.
10, method according to claim 1 is characterized in that, the step of the SVC between the unnecessary NodeB of described release RNC and bandwidth resources comprises:
Judge whether the SVC of complete free time,, then discharge described complete idle SVC if having; Otherwise, select the SVC of the less user data of carrying, and the user that will be carried on selected SVC is re-assigned on the SVC beyond the selected SVC, discharge selected SVC then.
11, method according to claim 1, it is characterized in that, described RNC defines the Iub interface bandwidth resources of NodeB when unnecessary, keep the SVC between described RNC and the NodeB earlier, continue monitoring Iub interface bandwidth resources then, if be provided with in the time period, the seizure condition of Iub interface bandwidth resources is unnecessary always, then discharges the SVC between described RNC and the NodeB.
According to each described method of claim 1 to 11, it is characterized in that 12, described user face data is managed by Access Link Control Application Part ALCAP; Described Iub interface bandwidth resources are Asynchronous Transfer Mode adaptation layer 2 path A AL2 PATH resources.
According to each described method of claim 1 to 11, it is characterized in that 13, the connection of command transmitting uses permanent virtual circuit PVC to connect with being connected of transmission NodeB Operation and Maintenance in Iub interface.
14, according to each described method of claim 1 to 11, it is characterized in that described monitoring is: monitoring before the user inserts each time, perhaps monitoring after the user inserts each time is perhaps with periodic time interval monitoring.
According to each described method of claim 1 to 11, it is characterized in that 15, the connection of described transmission user face data is used between each NodeB that SVC connects with chain or tree structure networking.
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| CN102355698B (en) * | 2011-09-28 | 2015-03-25 | 华为技术有限公司 | Communication method based on base station control device group, device and system |
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| WO1999060758A1 (en) * | 1998-05-15 | 1999-11-25 | Ascend Communications, Inc. | Explicit rate marking for flow control in atm networks |
| EP0991294A2 (en) * | 1998-10-02 | 2000-04-05 | Nortel Networks Corporation | Method and apparatus for facilitating the call setup in an atm network |
| CN1359576A (en) * | 2000-05-02 | 2002-07-17 | 三菱电机株式会社 | ATM exchange and ATM high reliability control method |
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| WO1999060758A1 (en) * | 1998-05-15 | 1999-11-25 | Ascend Communications, Inc. | Explicit rate marking for flow control in atm networks |
| EP0991294A2 (en) * | 1998-10-02 | 2000-04-05 | Nortel Networks Corporation | Method and apparatus for facilitating the call setup in an atm network |
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