CN100481989C - A method for dynamic distribution of side signaling link of base station in mobile communication system - Google Patents
A method for dynamic distribution of side signaling link of base station in mobile communication system Download PDFInfo
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Abstract
The disclosed dynamic allocation method for BS signaling link routine in mobile communication system comprises: there are at least two link routines every with minimal/maximal flow threshold M/N between every BS and controller; for normal communication, it starts one link route as the main route for signaling interacting, and keeps other routes as stand-by; the flow detection module decides whether the main route flow over N, if yes, the route allocation module starts all routes to share whole business; then, the module detection module detects the flow of all routes and closes all stand-by routes if the total flow less than M, then switches current business to the main route. This invention has high reliability, improves resource utility, and reduces resource waste.
Description
Technical field
The present invention relates to the method that signaling link distributes in a kind of mobile communication system, relate in particular to the method for side signalling link of base station dynamic assignment in a kind of mobile communication system.
Background technology
Since the eighties in 20th century, mobile communication is convenient with it, flexible characteristic has satisfied the requirement to communicating by letter in people's work, the life, presents the fast-developing impetus.The tracking exchage amount increases fast, and improve day by day the status of mobile communication.The business of mobile communication is also changing, and along with the development of Internet with popularize, mobile data services are generally had an optimistic view of.The growth of number of users and the development of mobile data services need more multiple spectra resource, and also the data transmission capabilities to mobile communication has proposed requirements at the higher level; The spectrum efficiency of existing second generation mobile communication and frequency spectrum resource can't satisfy this demand, and the situation in that the frequency spectrum resource anxiety has appearred in many countries presses for new frequency range and the higher technology of spectrum efficiency of adopting.At this situation, International Telecommunication Union has proposed the third generation (3G) mobile communication system, to alleviate the anxiety of frequency spectrum resource, satisfies the requirement of multimedia service and high quality-of-service.
The 3G mobile communication system comprises core net (CN), RNS (RNS) and subscriber equipment (UE) three parts.RNS comprises radio network controller (RNC) and two entities of Node B again.Wherein, Node B is the base station of 3G system, links to each other with RNC by Iub interface.
At present dual mode is adopted in the control of Iub interface interexchange link usually: a kind of is the masterslave switchover mode, promptly under normal conditions, only use active link, reserve link is idle, when active link generation problem can not be finished the transmission of normal signaling, start the masterslave switchover process, reserve link is made as main usefulness, former active link becomes standby.Another kind of mode is the mode of load sharing, promptly uses multilink to provide service as the upper-layer user jointly simultaneously.
Though it is simple that at present existing two kinds of controlling links modes realize, all has shortcoming.For the masterslave switchover mode, the reliability of this mode is relatively good under normal conditions, but is in idle state but reserve link has taken resource most of the time (active link does not damage) lining, causes resource utilization lower.And when business was not in a hurry, this mode can normally provide service, take place simultaneously but work as a large number of services, active link can't bear the heavy load, and packet loss takes place, but as long as Link State also just often, reserve link still is in idle state, up to the active link state variation.And from finding that active link goes wrong, to enabling this process of reserve link, reliability of data transmission also can descend.The load sharing mode is used all Iub interface interexchange link resource coordination work, has reduced the waste of resource, has improved the signaling efficiency of transmission.But using multilink simultaneously is that a certain user is when serving, if abnormal conditions such as certain bar link congestion occur, though can also guarantee the transfer of data on every link, but may cause the entanglement of sequential relationship when these congested link datas are uploaded to the user, thereby reduce the reliability of transmission.
Summary of the invention
At existing problem and shortage in the signaling link distribution method in the above-mentioned existing mobile communication system, the purpose of this invention is to provide the method for side signalling link of base station dynamic assignment in a kind of data transmission credibility height, resource utilization height, the simple mobile communication system of realization.
The present invention is achieved in that the method for side signalling link of base station dynamic assignment in a kind of mobile communication system, may further comprise the steps:
(1) is connected with two signaling links at least between the base station controller corresponding of each base station, and the max-thresholds of signaling link total flow minimum threshold and every signaling link flow between this base station and its respective base station controller is set with it;
(2) during proper communication, enable a signaling link as active link between the base station controller corresponding of described base station with it, finish the Signalling exchange between the base station controller corresponding of this base station, described leading with the signaling link outside the signaling link as reserved signalling link with it; The flow detection module of described base station controller detects main flow with signaling link, and judge the size of this detected main max-thresholds with signaling link flow and described signaling link flow by comparison module, if the main max-thresholds that has exceeded described signaling link flow with the signaling link flow, then begin to enable all reserved signalling links, to bear the business between the base station controller corresponding of described base station jointly with it by the signaling link distribution module; Described flow detection module detects the flow of all signaling links, and calculate current signaling total flow between the base station controller corresponding of described base station with it, described comparison module is judged the size of current signaling total flow and total flow minimum threshold, if current signaling total flow is lower than described total flow minimum threshold, then close all reserved signalling links, the business between the base station controller that described base station is corresponding with it switches to main with on the signaling link.
Preferably, described signaling link total flow minimum threshold is less than or equal to the max-thresholds of every signaling link flow.
Preferably, described step (2) is further comprising the steps of:
After described flow detection module detects the flow of all signaling links, also must judge the size of the max-thresholds of the flow of each signaling link and described signaling link flow by described comparison module, if the signaling link that has exceeded described signaling link flow max-thresholds arranged, then by message control module reduce professional between the base station controller corresponding of described base station with it or by described signaling link distribution module in described base station with its corresponding base station controller between the interim signaling link of interpolation.
Preferably, this method is further comprising the steps of:
After having added interim signaling link between the base station controller corresponding of described base station with it, described flow detection module detects the flow of all signaling links, calculate the current signaling total flow between the base station controller corresponding of described base station with it, when current signaling total flow during, regain described interim signaling link less than the amassing of active and standby max-thresholds with signaling link travel permit number and signaling link flow; If the flow of each signaling link has exceeded the max-thresholds of described signaling link flow, then by described message control module reduce professional between the base station controller corresponding of this base station with it or by described signaling link distribution module in this base station with its corresponding base station controller between the interim signaling link of continuation interpolation.
When the present invention finishes Signalling exchange by between the base station controller corresponding with it of each base station multilink being set, under the normal condition, only adopt wherein a link to communicate as the active link between the base station controller corresponding with it of base station, all the other links are as reserve link.But when the active link flow has exceeded the link maximum stream flow threshold value of setting, enable reserve link to bear signaling traffic jointly.If flow is reduced to a link when can carry, then flow is switched to arbitrary link, this bearing link is as active link.
Particularly, the present invention has the following advantages:
Reliability is higher.Finish communication in traffic carrying capacity than a hour use active link, a link transmission signaling is the most reliable and the most stable.After traffic carrying capacity is increased to a certain degree, only use a link may cause congested, to enable all links and share flow jointly this moment, though the load sharing mode may cause the sequence problem of data on the link, but compare and still use a link and cause congested or link failure under high traffic, this mode will have higher reliability.
Improve resource utilization, reduced the wasting of resources.There are some idle resources in the system,, may not have great help to it, and for the little base station of flow, Resources allocation wasted sheerly if give each base station with these resource average marks.The present invention as dynamic temporary link, when certain base station has been enabled reserve link and still can not be satisfied traffic load, can be allocated in the slack resources in the system these base stations with temporary link, and after the flow decline of these base stations, regain temporary link again.This has improved the whole system effective utilization rate of resource greatly.
Description of drawings
Fig. 1 is each flow status schematic diagram of the present invention;
Fig. 2 is an Iub interface link user mode schematic diagram of the present invention;
Fig. 3 is the implementation structure schematic diagram of RNC of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is that example describes with the 3G mobile communication system.Connect by Iub interface between RNC and the Node B.At least be connected with two links between each Node B and the RNC, the link between each Node B and the RNC is formed the traffic load group, and the max-thresholds N of the interior total flow minimum threshold M of load group and every link flow is set.Wherein, as shown in Figure 1, the N value is to be provided with like this: in system, be provided with the data buffer zone at every link, preserve and send but do not receive the data of response, the N value promptly is to determine according to processor processing speed and buffer size, so that link does not take place congested and packet loss is as the criterion.The N value can be represented with the concrete buffer stopper number that takies buffering area, also can take buffering area with maximum and represent in the ratio of whole buffering area.Concrete numerical value and representation can be determined according to the system of reality.For M, should satisfy M≤N.
As shown in Figure 1, in Node B and the RNC communication process, under the normal condition, flow is not very big, should adopt a link to finish the interior data interaction of this load group between Node B and the RNC, and this link of enabling is active link, all the other links are reserve link, are in idle state.Be provided with the flow detection module among the RNC, be responsible for detecting and monitoring the flow (promptly detecting the situation that takies of having enabled the corresponding buffering area of link) of having enabled link, comparison module among the RNC judges whether the active link flow has surpassed the max-thresholds N of link flow simultaneously, if surpassed the N value, then the link assignment module by system begins to enable all reserve links in this load group, all links that are provided with between Node B and RNC are born all flows in the load group jointly, change the load sharing hairdo into.According to concrete needs, can set the flow detection module each has been enabled the sense cycle of link, when state switches frequently, can suitably reduce sense cycle, otherwise then increase sense cycle.In addition, when rare earth resources is big, can suitably reduces sense cycle, otherwise then increase sense cycle.
Under load sharing hairdo situation, the flow detection module is active and standbyly carried out flow detection with link by setting cycle to each, the flow that system will at first go out each link detecting is sued for peace, and compare with the total flow minimum threshold M that sets, if less than M, then the total flow between explanation this Node B this moment and the RNC can be by a link bearer, and for fear of the theoretical flaw of load sharing hairdo (the data time sequence entanglement might appear causing, thereby influence communication quality), the present invention will be transferred to the business in the load group on a certain the link immediately, still adopt the active link initiate mode to guarantee communication quality.As if each link flow with greater than M, then judge whether that by comparison module flow exceeds the link of N,, illustrate that then present flow rate has arrived full load condition if having, need to reduce the business in the load group or increase temporary link in this load group, the present invention goes to request link and adds state.
Under request link interpolation state, system decides according to current resource situation and adds temporary link or reduce professional.If the system resource deficiency does not have available temporary link, system can't increase temporary link so, but realize by minimizing business in the load group.Though, reduce professional way and can cause a part of user can't enjoy service in this moment, compare and make current all user communication qualities declines in the whole load group, a kind of preferred mode of still can yet be regarded as.Certainly,, there is temporary link, then in the more load group of business, adds temporary link if there are sufficient available resources in system, professional to share with primary, spare link in this load group.
After under the load sharing hairdo situation each link flow being detected, those of ordinary skills are to be understood that, can judge whether earlier that also flow exceeds the link of N, if have and then go to request link interpolation state, otherwise calculate each link flow sum, and judge that whether this flow sum is less than M.
For the load group of having distributed temporary link, need carry out flow detection to each link (comprising temporary link) equally.If the interior chain travel permit number of load group this moment is L, then calculate each link flow sum H, if H＜(L-1) * N, then go to request deletion temporary link state, and delete a temporary link, if no longer contain temporary link in the preload group, then state goes to the load sharing state automatically.If the load group contains the link that flow exceeds N, then go to request link and add state, in this load group, continue to add temporary link or reduce in this load group professional.
Enable at active link, under the reserve link idle state, active link breaks down or Traffic Anomaly if the flow detection module detects, and then enables reserve link as Signalling exchange link between Node B and the RNC, and this enables link as active link.
3G mobile communication system of the present invention is meant TD SDMA (TD-CDMA) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA) system and CDMA2000 system.
As shown in Figure 2, clearly show Node B among the figure and be connected situation with each link between the RNC.Among the figure, empty arrow line is represented reserve link, and the solid arrow line is represented enabled link, and the dot-and-dash arrowhead line is represented the temporary link enabled.It is that example illustrates that this figure respectively is one with active link, reserve link and temporary link.In fact the present invention comprises three kinds of operating states, be that flow is when little, enable active and standby with Link State (only enabling primary link), flow continues to increase when exceeding the active link flow threshold, enables the active and standby link of using simultaneously, forms the load sharing state, if flow continues to increase, link still exceeds setting threshold, then enables temporary link (if available temporary link is arranged), becomes the load sharing state that contains temporary link; Perhaps reduce in this link group professional.
As shown in Figure 3, the present invention can perform well in the link management of Iub interface.In RNC inside, can realize dynamic management by the inner link administration module of transfer network sub system to the link of Iub interface.The link management module is positioned at transfer network sub system, and all interexchange links of Iub interface are managed.Among the figure, the bottom communication platform is used to provide the communication service between interoffice and plate; Operation and Maintenance provides local maintenance management function and man-machine interface etc.; Transmission network provides the cross complaint of transport network layer interoffice signaling and the transfer function of high-rise interoffice signaling; The function of high-level signaling comprises control, Radio Resource control and distribution, the switching controls of voice and data call, control of base station system etc.Each module among the figure is clearly for those of ordinary skills, repeats no more here.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1, the method for side signalling link of base station dynamic assignment in a kind of mobile communication system is characterized in that this method may further comprise the steps:
(1) is connected with two signaling links at least between the base station controller corresponding of each base station, and the max-thresholds of signaling link total flow minimum threshold and every signaling link flow between this base station and its respective base station controller is set with it;
(2) during proper communication, enable a signaling link between the base station controller corresponding of described base station as the main signaling link of using with it, finish the Signalling exchange between the base station controller corresponding of this base station, described leading with the signaling link outside the signaling link as reserved signalling link with it; The flow detection module of described base station controller detects main flow with signaling link, and judge the size of this detected main max-thresholds with signaling link flow and described signaling link flow by comparison module, if the main max-thresholds that has exceeded described signaling link flow with the signaling link flow, then begin to enable all reserved signalling links, to bear the signaling traffic between the base station controller corresponding of described base station jointly with it by the signaling link distribution module; Described flow detection module detects the flow of all signaling links, and calculate current signaling total flow between the base station controller corresponding of described base station with it, described comparison module is judged the size of current signaling total flow and total flow minimum threshold, if current signaling total flow is lower than described total flow minimum threshold, then close all reserved signalling links, the signaling traffic between the base station controller that described base station is corresponding with it switches to main with on the signaling link.
2, the method for side signalling link of base station dynamic assignment in the mobile communication system according to claim 1 is characterized in that, described signaling link total flow minimum threshold is less than or equal to the max-thresholds of every signaling link flow.
3, the method for side signalling link of base station dynamic assignment in the mobile communication system according to claim 1 is characterized in that, described step (2) is further comprising the steps of:
After described flow detection module detects the flow of all signaling links, also must judge the size of the max-thresholds of the flow of each signaling link and described signaling link flow by described comparison module, if the signaling link that has exceeded described signaling link flow max-thresholds arranged, then by message control module reduce between the base station controller corresponding of described base station with it signaling traffic or by described signaling link distribution module in described base station with its corresponding base station controller between the interim signaling link of interpolation.
4, the method for side signalling link of base station dynamic assignment in the mobile communication system according to claim 3 is characterized in that this method is further comprising the steps of:
After having added interim signaling link between the base station controller corresponding of described base station with it, described flow detection module detects the flow of all signaling links, calculate the current signaling total flow between the base station controller corresponding of described base station with it, when current signaling total flow during, regain described interim signaling link less than the amassing of active and standby max-thresholds with signaling link travel permit number and signaling link flow; If the flow of each signaling link has exceeded the max-thresholds of described signaling link flow, then by described message control module reduce between the base station controller corresponding of this base station with it signaling traffic or by described signaling link distribution module in this base station with its corresponding base station controller between the interim signaling link of continuation interpolation.
5, the method for side signalling link of base station dynamic assignment in the mobile communication system according to claim 1 is characterized in that this method is further comprising the steps of:
When adopting a master to communicate by letter between the base station controller corresponding of described base station with signaling link with it, if described flow detection module detects and main breaks down or Traffic Anomaly with signaling link, then enable reserved signalling link as Signalling exchange signaling link between the base station controller corresponding of base station with it.
6, according to the method for side signalling link of base station dynamic assignment in the described mobile communication system of arbitrary claim in the claim 1 to 5, it is characterized in that described flow detection module can be set as the case may be to the cycle of having enabled the flow detection of signaling link between the base station controller corresponding with it of described base station.
7, according to the method for side signalling link of base station dynamic assignment in the described mobile communication system of arbitrary claim in the claim 1 to 5, it is characterized in that, described mobile communication system is a 3-G (Generation Three mobile communication system), described base station is Node B base station, described base station controller is a radio network controller (RNC), one or more Node B is connected in a RNC, forms RNS.
8, the method for side signalling link of base station dynamic assignment in the mobile communication system according to claim 7, it is characterized in that described 3-G (Generation Three mobile communication system) is meant TD SDMA TD-cdma system, Wideband Code Division Multiple Access (WCDMA) WCDMA system and CDMA2000 system.
9, according to the method for side signalling link of base station dynamic assignment in the described mobile communication system of arbitrary claim in the claim 1 to 5, it is characterized in that the max-thresholds of described signaling link flow is set in the following manner:
Every signaling link is provided with buffering area, preserves to send but do not receive the data of response, and the max-thresholds of described flow determines according to processor processing speed and buffer size, not take place congested and packet loss is as the criterion.
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| CN105307217A (en) * | 2015-11-06 | 2016-02-03 | 华为技术有限公司 | Method and device for flexibly processing link between network elements |
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| CN108600055B (en) * | 2018-07-26 | 2020-10-16 | 新华三技术有限公司合肥分公司 | Data forwarding method and device and routing equipment |
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