CN102595500A - Load management method and device - Google Patents
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- CN102595500A CN102595500A CN2011100079221A CN201110007922A CN102595500A CN 102595500 A CN102595500 A CN 102595500A CN 2011100079221 A CN2011100079221 A CN 2011100079221A CN 201110007922 A CN201110007922 A CN 201110007922A CN 102595500 A CN102595500 A CN 102595500A
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Abstract
The invention relates to a load management method and a device. In the method, a network side executes the following steps that: a channel request sent by a terminal which resides in a service community is received; the service community presets the upper limit threshold of the load for launching inter-community channel sharing and occupation, wherein the service community allows to launch the inter-community channel sharing and occupation; when the current load is more than the upper limit threshold of the load, the launch of inter-community channel sharing and occupation is judged, otherwise, the launch is not judged; whether to launch the inter-community channel sharing and communication or not is judged according to the upper limit threshold of the load; when the launch of the inter-community channel sharing and occupation is judged, an adjacent community is selected and a channel is distributed; and through the interaction with the terminal, a call is established in the adjacent community in which the channel is distributed. According to the load management method and the device, load management can be realized, and the overload of the service community is prevented.
Description
Technical field
The present invention relates to the communication technology, load management method and device in especially a kind of field of mobile communication.
Background technology
In the radio honeycomb GSM, the basic function of channel allocation provides Traffic Channel, and improves usage factor of system resource as much as possible, the distribution of equalizing system resource and distribution.Channel allocation technique mainly contains 3 types: fixed channel assignment (FCA), dynamic channel allocation (DCA) and accidental channel distribute (RCA).
What use was many at present is fixed channel assignment; System is the radio carrier frequency of each cell site configuration some; Services request for the user who resides in the cellular-specific sub-district; System only distributes the usable radio resources of this sub-district for it, if there is not Radio Resource can use (comprising the preemptible Radio Resource), and this services request failure.This has just proposed very high requirement to the configuration and the deployment of cellular cell; To some sub-district provisional jumbo business demand appears particularly; Often not that the optimization of design phase and a large amount of redundancies can solve, so in current wireless mobile environment and finite wireless resources, no matter how to optimize the configuration of the Radio Resource of sub-district; As long as adopt the fixed channel assignment mode, must cause Radio Resource between different districts, to distribute and use uneven situation.
Along with the development of 3G network technology, to the management of Radio Resource, channel allocation field particularly; More having proposed dynamic channel allocation and accidental channel distributes; And unify to control the Radio Resource of 3G or heterogeneous networks such as 2/3G even other wireless access through introducing joint radio resource management (CRRM) network element, but corresponding techniques is very ripe, have yet in conceptual phase and experimental stage; And the relative system complex structure, the complexity of realization is also higher.
In the radio communication; Minizone load balancing technology receives publicity always; At present the technology of comparative maturity has the switching based on load, and system's high community user of will load automatically switches to the relatively low sub-district of loading under possible situation, but this has also increased the handover overhead of system; Under the situation of high load capacity, switch and increase the weight of the load of system to a certain extent again, and possibly cause the switching call drop.
The directed retry technology also plays the effect of load balancing to a certain extent; The purpose of directed retry is when current area does not have available resource; Around can be automatically mobile phone being transferred to vacant resource is arranged and satisfy in the sub-district of speech quality and go, thereby improve the call completing rate and the service ability of network.The roughly process of directed retry is such: the assignment request of receiving mobile switching centre when base station controller; At first attempt seeking available resource, if can not find, then according to the measurement report of mobile phone in current area; The sub-district that can satisfy speech quality around confirming; Trial is from these cell allocation resources, in case directed retry has then been accomplished in resource allocation and foundation success one time.If purpose sub-district and cell-of-origin not at same base station controller, then are the exterior orientation retry; If at same base station controller, then be the inner orientation retry.It should be noted that; When signaling channel is just set up; Possibly not have enough measurement reports to have which sub-district can satisfy the conversation demand of mobile phone around judging, so directed retry begin to need certain stand-by period, so that there is sufficient measurement report to make decisions.Directed retry can carry out repeatedly under the situation that examining report is allowed, thereby makes the service quality of system obtain large increase.But present directed retry is for the channel conditions of Target cell and be indifferent to, and causes directed retry still to fail probably, need carry out the multiple bearing retry, has prolonged the turn-on time of calling out greatly.
Summary of the invention
The technical problem that the present invention will solve provides a kind of load management method and device, to realize load management, avoids the Serving cell overload.
For solving above technical problem, the invention provides a kind of load management method, in this method, network side is carried out following steps:
Reception resides in the channel request of the terminal transmission of Serving cell, and the preset initiation of said Serving cell is striden cell channel and shared the upper load limit threshold value that takies;
Whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Wherein, Said Serving cell allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value; Judge to initiate to stride cell channel and share and take, otherwise judge that not initiating to stride cell channel shares and take;
Judge that initiating to stride cell channel shares when taking, and selects adjacent sub-district and carries out channel allocation;
Set up calling with said terminal interaction in the adjacent sub-district of allocated channel.
Further, the step of selecting adjacent sub-district and carrying out channel allocation comprises:
Obtain the adjacent sub-district of said Serving cell;
Carry out channel allocation in each adjacent sub-district successively, up to distributing successfully at certain adjacent cell channel, flow process finishes; Otherwise carry out channel allocation at said Serving cell.
Further; Said adjacent sub-district is to allow other sub-districts to initiate to stride cell channel to share the sub-district that takies; Or allow other sub-districts to initiate to stride cell channel to share the sub-district that takies, and load that should the neighbour sub-district does not reach preset other sub-districts of forbidding and strides cell channel and share the load lower threshold that takies.
Further, each adjacent sub-district is pressed the level intensity of this neighbour sub-district of measuring at current terminal and/or should be sorted in order to the number of channel of sharing the neighbour sub-district.
Further, said upper load limit threshold value is a said sub-district fully loaded 80% to 95%.
For solving above technical problem, the present invention also provides a kind of load management device, and this device comprises:
The channel request receiver module is used to receive the channel request that send at the terminal that resides in Serving cell, and said Serving cell is preset initiates to stride cell channel and share the upper load limit threshold value that takies;
Stride the shared judge module that takies of cell channel; Being used for whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Wherein, Said Serving cell allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value, judges that initiating to stride cell channel shares and take, otherwise judges and do not initiate to stride that cell channel is shared takies;
Channel assignment module judges that initiating to stride cell channel shares when taking, and selects adjacent sub-district and carries out channel allocation;
The call setup module is set up calling with said terminal interaction in the adjacent sub-district of allocated channel.
The Serving cell that load management method of the present invention and device carry out load management to needs is provided with in advance initiates to stride cell channel and shares the upper load limit threshold value that takies; Whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Reasonable setting through the upper load limit threshold value; Avoid the current service cell overload, when realizing load balancing control, ensure signal quality.
Description of drawings
Fig. 1 is the sketch map of load management method of the present invention;
Fig. 2 is the sketch map of adjacent sub-district queue order priority Control Parameter;
Fig. 3 initiates to stride the shared threshold parameter that takies of cell channel and concerns sketch map;
Fig. 4 is the channel allocation flow chart that the embodiment of the invention takies based on Channel Sharing;
Fig. 5 is the signaling process figure that the embodiment of the invention is switched when moving caller letter of application signaling channel;
Fig. 6 is the modular structure sketch map of load management device of the present invention.
Embodiment
Increased the handover overhead of system in view of existing switching based on load; Under the situation of high load capacity, switch the load that increases the weight of system to a certain extent again; And possibly cause the switching call drop, will be a kind of effective improvement so reach load balancing based on the dynamic channel allocation of minizone Channel Sharing when carrying out load balancing or customer call can before customer call, select persistent district the time.Just carry out load balancing strategy in minizone when selecting persistent district for user before calling out; There is such problem; Because resident might not have business; Resident equilibrium can not reflect the equilibrium of real time business, thus the present invention propose when terminal originating service, do real-time dynamic assignment and load management has better dynamic property.
The main thought of load management method of the present invention and device is the Serving cell that needs carry out load management to be provided with in advance initiate to stride cell channel and share the upper load limit threshold value that takies; Whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Reasonable setting through the upper load limit threshold value; Avoid the current service cell overload, when realizing load balancing control, ensure signal quality.
As shown in the figure, in the load management method of the present invention, network side is carried out following steps and is comprised:
Step 101: receive the channel request of the terminal transmission that resides in Serving cell, the preset initiation of said Serving cell is striden cell channel and is shared the upper load limit threshold value that takies;
Understandably, for the various network framework, the network element of carrying out network side function of the present invention is different; As in the 2G network architecture; Can there be base station controller (BSC) to realize, in the 3G network framework, then can realizes by radio network controller (RNC); Hereinafter, be that example describes with the 2G network architecture.
The present invention mainly is in order to solve the dynamic channel allocation of sub-district; The Channel Sharing of when the Serving cell Radio Resource reaches certain SC service ceiling, initiating to stride the sub-district by base station controller takies, and switches during the calling through similar directed retry and realize that the Channel Sharing of striding the sub-district takies.
Will avoid initiating to stride cell channel from the general extent shares and takies as far as possible; Some expenses have been increased after all; If share to take and just can not play the balanced purpose of real dynamic load but by the time allow to initiate to stride cell channel during less than channel again, cause that the probability of call failure is very high at this moment in the application of this Serving cell.Simultaneously; Consider that a mobile subscriber in the Serving cell can both successfully initiate directed retry or strides cell channel and share and to take; For example, when the residing specific position of certain mobile subscriber, when all possible gravity treatment and switching cell only are this Serving cell oneself; Just can only use the channel resource of this sub-district when this user initiates channel request because it does not have can shared channel effective adjacent sub-district.Share and to take so the sub-district initiates to stride cell channel in advance; But thereby keep this Serving cell part Radio Resource this part special user's service request completely is not being met because of unique Serving cell load, this also is an exemplary advantage of dynamic channel allocation.
Initiation is striden cell channel and is shared the upper load limit threshold value employing BUSY_THRESHOLD_OUT parametric representation that takies; The BUSY_THRESHOLD_OUT Determination of Parameters fundamentally determines and affects strides cell channel and shares and to take the load balancing effect that is played; When this parameter setting hour, mean that system will frequently initiate to stride cell channel and share and take, the efficient and the stability of system is had considerable influence; When this parameter setting is big; The effect of system loading equilibrium is with not obvious, and when this parameter was 100%, actual effect of the present invention was just as common directed retry especially.
Preferably; The span of BUSY_THRESHOLD_OUT is 80% to 95%; Can confirm in the enforcement that key is to come control rationally to stride the shared frequency of cell channel and the effect of load balancing through the adjustment of this parameter according to concrete cell channel configuration and neighbor cell configuration situation.
Alternatively; Serving cell can also be provided with control switch; SHARE_SWITCH_OUT; Take in order to indicate this sub-district whether can initiate Channel Sharing, so, realize not contradiction of dynamic channel allocation of the present invention and static channel allocation to other adjacent sub-districts as Serving cell; The dynamic channel allocation that takies based on Channel Sharing is the stack on original static channel allocation algorithm, and can control whether open the dynamic channel assignment scheme that takies based on Channel Sharing by this SHARE_SWITCH_OUT switch fully.If switch cuts out influencing original static channel allocation algorithm hardly.
Step 102: whether initiate to stride cell channel according to said upper load limit threshold decision and share and to take; Wherein, Said Serving cell allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value; Judge to initiate to stride cell channel and share and take, otherwise judge that not initiating to stride cell channel shares and take;
Intelligible; When portable terminal proposes service request at its resident Serving cell; Base station controller is that this services request is at this Serving cell request channel; When if the busy channel resource of this Serving cell meets or exceeds the upper load limit threshold value of setting, judge to initiate to stride cell channel and share and take, otherwise carry out the static channel allocation flow process in current service cell.
Step 103: judge that initiating to stride cell channel shares when taking, and selects adjacent sub-district and carries out channel allocation;
Particularly, this step 103 comprises:
103a) obtain the adjacent sub-district of said Serving cell;
The adjacent sub-district that obtains can be all the adjacent sub-districts on the current service cell physical significance; In order to improve the efficient of channel allocation; Also can therefrom filter out the adjacent sub-district that conforms to a predetermined condition; Like these adjacent sub-districts is to allow other sub-districts to initiate to stride cell channel to share the sub-district that takies; Or allow other sub-districts to initiate to stride cell channel to share the sub-district that takies, and load that should the neighbour sub-district do not reach preset other sub-districts of forbidding and strides cell channel and share the load lower threshold that takies, and promptly allows other sub-districts to stride cell channel yet and shares the upper load limit threshold value that takies.
In order further to improve the efficient of channel allocation; These adjacent sub-districts can be adopted the mode of adjacent cell list and sorted by certain strategy; As; Press the level intensity ordering of this neighbour sub-district of current terminal measurement, or sort in order to the number of channel of sharing, or press level intensity and this neighbour sub-district the number of channel ordering of this neighbour sub-district of measuring at current terminal in order to share by this neighbour sub-district.Below provide a kind of preferred sortord:
Base station controller based on portable terminal to the real-time measurement of adjacent sub-district with on respond with the terminal instance and organize relevant information of adjacent cells; Comprise adjacent cell signal strength; Adjacent cell load; Whether adjacent sub-district supports that Channel Sharing takies, and so just can when each portable terminal initiation channel request, rapid and precise find this portable terminal effectively can use channel neighbour sub-district, and makes decisions and whether initiate Channel Sharing and take.
The effective adjacent cell list that satisfies gravity treatment or switching condition that base station controller will measure to this user terminal in real time; Obtain the resource information of each adjacent sub-district; Comprise whether this neighbour sub-district allows Channel Sharing, the signal quality of this neighbour sub-district and the number of channel that can be used for sharing.Whether the tabulation of effective adjacent sub-district will allow Channel Sharing according to this neighbour sub-district; The overall target of the signal quality of this neighbour sub-district and the number of channel that should the neighbour sub-district can share sorts; And select the target adjacent section of optimum adjacent sub-district, and in calling, this user is switched to new sub-district as Channel Sharing.
As shown in Figure 2; Adjacent sub-district queue order priority Control Parameter Key value can be DWORD (no symbol double word) type; From a high position to the low level, be Bit31～Bit0, be divided into three sections and define wherein high-order Bits31 representes whether to allow other sub-districts to take to its initiation Channel Sharing in the neighbour sub-district respectively; 1 expression allows, and 0 expression does not allow; Meta Bit30 is the level intensity that current mobile terminal measures this neighbour sub-district to Bit16, the number of channel that Bit15 can share for this neighbour sub-district to Bit0.The adjacent sub-district that the Key value is big more comes the front and preferentially selects.
Simultaneously in order to improve the search efficiency that Channel Sharing takies, can also be that M limits through the adjacent number of cells that configuration service sub-district maximum can be initiated Channel Sharing.For example the adjacent number of cells of a Serving cell configuration itself is N, and M will be less than N, because a user of a Serving cell so; He possibly detect a plurality of effective adjacent sub-districts; But, can not all inquire about and channel allocation all these adjacent sub-districts, so M is set in order to improve the particularly search efficiency that takies of Channel Sharing of channel request; To stride the shared search of cell channel at every turn and be limited within the effective scope time-delay when calling out to reduce.
103b) carry out channel allocation in each adjacent sub-district of said adjacent cell list successively, up to distributing successfully at certain adjacent cell channel, step 103 flow process finishes; Otherwise carry out channel allocation at said Serving cell.
The idiographic flow of the step 103b embodiment that vide infra.
Step 104: set up calling in the adjacent sub-district of allocated channel with said terminal interaction.
Switching during calling is to realize a technical essential of the present invention, need improve slightly call flow, though the signaling process that directed retry switched when having stipulated calling; But mainly be switching to Traffic Channel, and the channel request of general channel request, particularly speech business; Two processes are arranged; The letter of application signaling channel was applied for Traffic Channel more before this, so switch when making a call in principle two kinds of situation was arranged also; Because will initiating to stride the Channel Sharing of sub-district, this sub-district corresponding radio resource deficiency takies switching once being during at the letter of application signaling channel; The 2nd, the signaling channel of former sub-district is enough, takies switching in the application Channel Sharing that inadequate resource just initiates to stride the sub-district during Traffic Channel, and the present invention supports both of these case.
For data service; There is not the notion of switching in itself; No matter be, all will adopt the program of district reselecting, particularly for the sub-district that has the grouping DCCH at packet transfer mode or at packet idle mode; Data service is more flexible on the selection of sub-district and channel allocation; Can business begin or professional carrying out in by the random relatively selection Serving cell of certain rule, so that the sub-district of Channel Sharing initiate to stride to(for) data service takies process is convenient, directly use the cell channel of striding of the present invention to share the allocation flow that takies and just can select proper cell and appropriate wireless resources.
Embodiment
Understandably; Each sub-district all possibly be the adjacent sub-district of the Serving cell or the Serving cell at terminal, and preferably, each sub-district can be provided with four cell-level Control Parameter; At first be two control switchs; SHARE_SWITCH_OUT and SHARE_SWITCH_IN, SHARE_SWITCH_OUT are whether this sub-district can take to other adjacent sub-district initiation Channel Sharing as Serving cell, and SHARE_SWITCH_IN is whether this sub-district allows other sub-districts to take to its initiation Channel Sharing as adjacent sub-district.These two Control Parameter also can adopt the mode of default setting to realize.Next is two threshold parameter BUSY_THRESHOLD_OUT and BUSY_THRESHOLD_IN; BUSY_THRESHOLD_OUT is that this sub-district is during as Serving cell; Cell load just can be initiated Channel Sharing to suitable adjacent sub-district during greater than this threshold value and taken; BUSY_THRESHOLD_IN is this sub-district during as adjacent sub-district, and cell load just allows other sub-districts to initiate Channel Sharing to its during less than this threshold value to take.
The BUSY_THRESHOLD_OUT Determination of Parameters fundamentally determines and affects strides cell channel and shares and to take the load balancing effect that is played; BUSY_THRESHOLD_IN parameter influence relatively is less; Its effect mainly is when Channel Sharing takies, to select which adjacent area more suitable, and is preferably, as shown in Figure 3; This parameter is less than the BUSY_THRESHOLD_OUT of this sub-district; Otherwise this sub-district all will outwards be initiated Channel Sharing and taken, and but also allows others to take the channel of oneself, and Channel Sharing takies and just got into chaotic vicious circle like this.This parameter minimum also just equaled to get back to the situation of common directed retry by 0 o'clock, and directed retry will be carried out as unique selection in this sub-district.
The span of BUSY_THRESHOLD_OUT is 80% to 95% o'clock, and preferably, the span of BUSY_THRESHOLD_IN is 60% to 75%.
This two threshold parameters effectively are set, on the one hand can avoid striding cell channel and share to take too and spread unchecked, guaranteed on the macroscopic view that each sub-district serves the stability of the radio channel resource of this sub-district.Play the effect of good load balancing on the other hand again.
Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.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.
As shown in Figure 4, this flow process may further comprise the steps:
Initiate professional application when portable terminal at its resident Serving cell, channel request message arrives base station controller from the base station of Serving cell, and base station controller at first is its allocated channel;
If (1) this sub-district Channel Sharing of not allowing to initiate to stride the sub-district takies, SHARE_SWITCH_OUT is " denying "; Perhaps (2) SHARE_SWITCH_OUT does not initiate to stride cell channel and shares the lower limit BUSY_THRESHOLD_OUT that takies for " being " but the load of this sub-district reach; The Channel Sharing of then not initiating to stride the sub-district takies flow process; Directly get into step 408; Otherwise promptly this sub-district allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value, judges that initiating to stride cell channel shares and take entering step 403;
Sort by the Key value of Fig. 2 in these adjacent sub-districts, Key value senior general more more preferentially obtains selecting.Because only could effectively obtain the number of channel information whether this neighbour sub-district allows Channel Sharing to take and should the neighbour sub-district can share in the inner adjacent sub-district of this base station controller; Non-the inner adjacent sub-district of base station controller system will have only signal strength information; Therefore the sub-district in the adjacent cell list is preferably the inner sub-district of this base station controller system; According to Key value in the preceding text rule is set, the Key value highest order of the sub-district in the adjacent cell list is 1.For the situation of multimode, like the 2/3G common mode, so intrasystem adjacent sub-district also can get into this adjacent cell list, for example 2G network congestion, and the calling of initiating at 2G cell so can automatically switch to intrasystem 3G sub-district.
According to above meaning of parameters, the Channel Sharing whether this neighbour sub-district allows other sub-districts to stride the sub-district to its initiation has taken two conditions:
(1) this sub-district Channel Sharing of allowing other sub-districts to initiate to stride the sub-district to its takies, and SHARE_SWITCH_IN is " being "; And
(2) this cell load does not reach and allows other sub-districts to initiate to stride the shared upper load limit BUSY_THRESHOLD_IN that takies of cell channel to it.
If above-mentioned condition is set up, the highest order of the Key value of corresponding adjacent sub-district in the tabulation formation is 1.
The computational methods of the number of channel of permission Channel Sharing are following:
This adjacent cell channel sum * (BUSY_THRESHOLD_OUT-of this neighbour sub-district should the current load in neighbour sub-district)
Step 404 is judged the adjacent cell list that obtains, if adjacent cell list is empty, then directly gets into step 408, otherwise gets into step 405;
Step 405 is selected the top adjacent sub-district of current queue, and promptly channel allocation is carried out in this neighbour sub-district in the maximum adjacent sub-district of Key value;
Step 406 is if the channel allocation success then directly gets into step 407, otherwise the top adjacent sub-district of adjacent cell list formation is removed, and gets into step 404 again;
Step 408 is carried out the static channel allocation flow process at former Serving cell;
Step 410 is set up calling in this sub-district;
Switch during for calling, if the switching of Traffic Channel, the agreement flow process is in full accord with the directed retry of stipulating at present, need not make an amendment.What the present invention proposed also supports the Channel Sharing of striding the sub-district to take when the letter of application signaling channel, need do a simple explanation to concrete signaling process here.
As shown in Figure 5, for the situation of letter of application signaling channel, step 407 specifically may further comprise the steps:
Step 501, when base station controller is received the signaling channel request message, and current service cell satisfies the sub-district of striding of initiating signaling channel and shares the condition that takies, and promptly directly strides the adjacent cell base station that the sub-district takies and initiates the channel activation instruction to meeting;
Step 502, this neighbour's cell base station are beamed back channel activation ACK message to base station controller after receiving the channel activation instruction;
Step 503, base station controller sends switching command to the base station of the current service cell of portable terminal, carries the base station information that switches adjacent sub-district in the switching command;
Step 504, the base station of the current service cell of portable terminal are sent switching command to this portable terminal after receiving switching command;
Step 505, portable terminal are sent switching access message to new adjacent cell base station after receiving switching command;
Step 506, adjacent cell base station are sent switching detection message to base station controller after receiving and switching access message, and the physical message of accomplishing between this base station and the portable terminal is mutual;
Wherein, at Um Interface, SABM (Set Asynchronous Balanced Mode is provided with Asynchronous Balanced Mode) frame is that the message that a multiframe response operation mode connects is set up in request on the LAPDm layer.After adjacent cell base station was received the SABM frame, UA of loopback (not having numbering confirms) frame as to the replying of SABM frame, was illustrated in and has set up a LAPDm path between MS and the adjacent cell base station; In addition, the message field of this UA frame comprises a same L3 message, after MS receives this message, relatively has only when just the same with content corresponding in the SABM frame that oneself sends, and just thinks and is accepted by system.The IMSI that comprises MS in the L3 message, IMSI is unique to each MS, but this can guarantee on this channel, to have only a MS connecting system.
Step 507, adjacent cell base station sends the link setup Indication message to base station controller after the information interaction of completion and portable terminal.
Step 508, after the information interaction of completion and adjacent cell base station, portable terminal sends handoff completion message for adjacent cell base station.
Step 509 after adjacent cell base station is received handoff completion message, is transmitted handoff completion message to base station controller.
Step 510, base station controller is at this time sending CR (Connection Request, request link setup) message to core net, and CR message is carried call request and location updating message.
Arrive here, switch during the calling of signaling channel and accomplish, system gets into conventional signaling process.
More than be preferred embodiment and the signaling process that the present invention provides, make things convenient for those skilled in the art to grasp and realize present technique.The embodiment here mainly utilizes the speech business of 2G network to do introduction, for data service and the mutual situation about switching of 2/3G common mode, also can be convenient to use method provided by the invention and be optimized and improve.So relevant optimization and improvement also belong to interest field of the present invention.
In sum, the dynamics of channels of the present invention through striding the sub-district shared and taken, and the balanced to a certain extent use of Radio Resource has well been avoided some sub-district and heavy congestion occurred and the very idle situation of neighbor cell because of the traffic load of burst.Simultaneously because when the channel allocation of call phase, just done the load balancing of minizone; Also avoid the generation of follow-up optimization action to a certain extent, for example reduced the triggering of the sub-district switching that brings because of load balancing and the extra system expense of bringing thus.And this is a complete dynamic real-time process; Even for example the load of certain sub-district is very high; Switch but also not necessarily need do based on the minizone of load; Having added to come in because this sub-district no longer includes new calling probably, that is to say that load balancing is that real-time initiation according to terminal call triggers fully, is real dynamic as required.
Certainly, the present invention also has certain overhead, at first is to share for the dynamic channel of realizing striding the sub-district, has increased the complexity of base station controller control, and the switching will realize calling out the time, has increased the time delay that inserts to a certain extent.To stride the effect that cell channel shares obvious in order to make, and the plot planning of allocating cell Channel Sharing is also had certain requirement with covering.
Simultaneously, the present invention also is a kind of optimization and the development to directed retry.Directed retry mainly is in current area because reasons such as no available resources are just initiated to be equivalent to retrospective call setup after causing the appointment failure at present, and the present invention proposes after the current area load reaches certain threshold value, just to be similar to the trial of directed retry in advance.Second; Present directed retry is for the channel conditions of Target cell and be indifferent to; Cause directed retry still to fail probably, need carry out the multiple bearing retry, prolonged the turn-on time of calling out greatly; And the present invention switches to have understood when calling out to switch the channel conditions of the sub-district of entering; When select switching adjacent sub-district,, and be when a channel request, just whether to stride the judgement that cell channel shares and initiate Channel Sharing to take, better play the effect of load balancing according to the idle relatively more adjacent sub-district principle of priority of channel.
Corresponding to above method, the present invention also provides a kind of load management device, corresponding to the various network framework; This device can realize that as in the 2G network architecture, this device can be realized at base station controller at different network elements; As in the 3G network framework; This device is in the radio network controller realization, and is as shown in Figure 6, comprising:
The channel request receiver module is used to receive the channel request that send at the terminal that resides in Serving cell, and said Serving cell is preset initiates to stride cell channel and share the upper load limit threshold value that takies;
Stride the shared judge module that takies of cell channel; Being used for whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Wherein, Said Serving cell allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value, judges that initiating to stride cell channel shares and take, otherwise judges and do not initiate to stride that cell channel is shared takies;
Channel assignment module judges that initiating to stride cell channel shares when taking, and selects adjacent sub-district and carries out channel allocation;
The call setup module is set up calling with said terminal interaction in the adjacent sub-district of allocated channel.
Further, said channel assignment module comprises:
Adjacent sub-district obtains submodule, is used to obtain the adjacent sub-district of said Serving cell;
The channel allocation submodule is used for carrying out channel allocation in each adjacent sub-district successively, up to distributing successfully at certain adjacent cell channel, otherwise carries out channel allocation at said Serving cell.
It is to allow other sub-districts to initiate to stride cell channel to share the sub-district that takies that adjacent sub-district obtains the adjacent sub-district that submodule obtains; Or allow other sub-districts to initiate to stride cell channel to share the sub-district that takies, and load that should the neighbour sub-district does not reach preset other sub-districts of forbidding and strides cell channel and share the load lower threshold that takies.
Further, said adjacent sub-district obtain this neighbour sub-district of each adjacent sub-district that submodule obtains measuring by current terminal level intensity and/or should of the number of channel ordering of neighbour sub-district in order to share.
Preferably, said upper load limit threshold value (BUSY_THRESHOLD_OUT) is a said sub-district fully loaded 80% to 95%, and said load lower threshold (BUSY_THRESHOLD_IN) is a said sub-district fully loaded 60% to 75%.
The present invention takies the dynamic channel allocation that realizes the global cell homeostasis of load in the minizone based on honeycomb through the Channel Sharing of striding the sub-district; And portable terminal can switch to the effective adjacent sub-district that can lend channel from former Serving cell smoothly; Realized Radio Resource use of equilibrium as far as possible between different cellular cells; And improve the call completing rate of system to a certain extent, reduce call loss.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/submodule in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (10)
1. a load management method is characterized in that, network side is carried out following steps:
Reception resides in the channel request of the terminal transmission of Serving cell, and the preset initiation of said Serving cell is striden cell channel and shared the upper load limit threshold value that takies;
Whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Wherein said Serving cell allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value; Judge to initiate to stride cell channel and share and take, otherwise judge that not initiating to stride cell channel shares and take;
Judge that initiating to stride cell channel shares when taking, and selects adjacent sub-district and carries out channel allocation;
Set up calling with said terminal interaction in the adjacent sub-district of allocated channel.
2. the method for claim 1 is characterized in that: the step of selecting adjacent sub-district and carrying out channel allocation comprises:
Obtain the adjacent sub-district of said Serving cell;
Carry out channel allocation in each adjacent sub-district successively, up to distributing successfully at certain adjacent cell channel, flow process finishes; Otherwise carry out channel allocation at said Serving cell.
3. according to claim 1 or claim 2 method; It is characterized in that: said adjacent sub-district is to allow other sub-districts to initiate to stride cell channel to share the sub-district that takies; Or allow other sub-districts to initiate to stride cell channel to share the sub-district that takies, and load that should the neighbour sub-district does not reach preset other sub-districts of forbidding and strides cell channel and share the load lower threshold that takies.
4. method as claimed in claim 2 is characterized in that: each adjacent sub-district is pressed the level intensity of this neighbour sub-district of measuring at current terminal and/or should be sorted in order to the number of channel of sharing the neighbour sub-district.
5. the method for claim 1, it is characterized in that: said upper load limit threshold value is a said sub-district fully loaded 80% to 95%.
6. a load management device is characterized in that, this device comprises:
The channel request receiver module is used to receive the channel request that send at the terminal that resides in Serving cell, and said Serving cell is preset initiates to stride cell channel and share the upper load limit threshold value that takies;
Stride the shared judge module that takies of cell channel; Being used for whether initiating to stride cell channel according to said upper load limit threshold decision shares and to take; Wherein, Said Serving cell allows to initiate to stride cell channel and shares and take and when preload during greater than said upper load limit threshold value, judges that initiating to stride cell channel shares and take, otherwise judges and do not initiate to stride that cell channel is shared takies;
Channel assignment module judges that initiating to stride cell channel shares when taking, and selects adjacent sub-district and carries out channel allocation;
The call setup module is set up calling with said terminal interaction in the adjacent sub-district of allocated channel.
7. device as claimed in claim 6 is characterized in that, said channel assignment module comprises:
Adjacent sub-district obtains submodule, is used to obtain the adjacent sub-district of said Serving cell;
The channel allocation submodule is used for carrying out channel allocation in each adjacent sub-district successively, up to distributing successfully at certain adjacent cell channel, otherwise carries out channel allocation at said Serving cell.
8. device as claimed in claim 7; It is characterized in that: it is to allow other sub-districts to initiate to stride cell channel to share the sub-district that takies that said adjacent sub-district obtains the adjacent sub-district that submodule obtains; Or allow other sub-districts to initiate to stride cell channel to share the sub-district that takies, and load that should the neighbour sub-district does not reach preset other sub-districts of forbidding and strides cell channel and share the load lower threshold that takies.
9. device as claimed in claim 7 is characterized in that: said adjacent sub-district obtain this neighbour sub-district of each adjacent sub-district that submodule obtains measuring by current terminal level intensity and/or should of the number of channel ordering of neighbour sub-district in order to share.
10. device as claimed in claim 6 is characterized in that: said upper load limit threshold value is a said sub-district fully loaded 80% to 95%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813385A (en) * | 2012-11-13 | 2014-05-21 | 中国移动通信集团河南有限公司 | Cell business resource distribution method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553739A (en) * | 2003-05-26 | 2004-12-08 | 华为技术有限公司 | Method for realizing laminated plot interlayer loading balance |
| CN1997219A (en) * | 2006-01-06 | 2007-07-11 | 中兴通讯股份有限公司 | A method for switching the cross-dispatching client of the digital cluster terminal |
| CN101345985A (en) * | 2007-07-12 | 2009-01-14 | 华为技术有限公司 | Method and device for improving resource utilization rate in radio communication system |
| CN101772081A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Method and system for dynamically balancing cell load in wireless network |
| CN101841850A (en) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | Method, device and system for acquiring neighboring cell load information from LTE system |
-
2011
- 2011-01-14 CN CN201110007922.1A patent/CN102595500B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553739A (en) * | 2003-05-26 | 2004-12-08 | 华为技术有限公司 | Method for realizing laminated plot interlayer loading balance |
| CN1997219A (en) * | 2006-01-06 | 2007-07-11 | 中兴通讯股份有限公司 | A method for switching the cross-dispatching client of the digital cluster terminal |
| CN101345985A (en) * | 2007-07-12 | 2009-01-14 | 华为技术有限公司 | Method and device for improving resource utilization rate in radio communication system |
| CN101772081A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Method and system for dynamically balancing cell load in wireless network |
| CN101841850A (en) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | Method, device and system for acquiring neighboring cell load information from LTE system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813385A (en) * | 2012-11-13 | 2014-05-21 | 中国移动通信集团河南有限公司 | Cell business resource distribution method and device |
| CN103813385B (en) * | 2012-11-13 | 2017-09-12 | 中国移动通信集团河南有限公司 | A kind of distribution method and equipment of Zone resource |
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