CN101626589A - Load control method, apparatus and system - Google Patents
Load control method, apparatus and system Download PDFInfo
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Abstract
The invention provides a load control method, an apparatus and a system. The method comprises the following steps: monitoring a load in a common coverage cell of different network systems, wherein the different network systems comprise a first network system and a second network system; and modifying the reselection parameters in the system message of the network system with a higher load and/or of the network system with a lower load if the load between the first network system and the second network system is determined to be in imbalance according to a monitoring result. Whether the different network systems are in imbalance or not is determined by monitoring the load in the common coverage cell of the network systems in the invention, and in the case of imbalance, the reselection parameter is adjusted to enable the user to easily reselect a different network system, thereby reducing the load increment of the network system and guaranteeing the load balance of the different network systems.
Description
Technical field
The present invention relates to the network communications technology, particularly the load control method between different network systems, device and system.
Background technology
Current, the 2G network is developed fully, has good covering performance.3G network is an emerging network, and its network coverage is also in development gradually.Usually at the traffic hot zones, 3G and 2G network all carry out overlapping covering.User's traffic initiates to have randomness, might be in the area of 3G and the network overlapped covering of 2G, the load of one of them network is very high, and the load of another network may also be in the free time, will cause network system resources to utilize result insufficient and that user's blocking rate raises like this.Therefore, need carry out equilibrium treatment to the network system load.
At present, when 3G and the unbalanced state of 2G offered load take place, the dual-mode capabilities user who has connected in the high-load network system can be switched in the low laod network system, to reach the purpose of load balancing.
But the inventor finds the defective of prior art and is in realizing process of the present invention: the user that will connect carries out different system and switches, and has the risk of call drop; The switching meeting brings of short duration interruption to business between network system.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of load control method, device and system.Determine with the load of coverage cell whether different network systems is in non-equilibrium state by monitoring network system, when being in non-equilibrium state, reselecting parameters is adjusted, make user's gravity treatment more easily to rete mirabile network system, guarantee the load balance of different network systems with coverage cell.
For achieving the above object, the embodiment of the invention provides a kind of load control method, and this method comprises: the load to the common coverage cell of different network systems is monitored, and described different network systems comprises first network system and second network system;
If determine that according to monitoring result load is in non-equilibrium state between described first network system and second network system, then the reselecting parameters in the system message of the lower network system of the higher network system of load and/or load is made amendment.
For achieving the above object, the embodiment of the invention provides a kind of load control device, and this device comprises:
Monitoring means, described monitoring means are used for the load of the common coverage cell of different network systems is monitored, and described different network systems comprises first network system and second network system;
Status determining unit, described status determining unit are used for determining that according to monitoring result load is in non-equilibrium state between described first network system and second network system;
The parameter adjustment unit, be connected with described status determining unit, the definite result who is used in described status determining unit is when being in non-equilibrium state between first network system and second network system, and the reselecting parameters in the system message of the lower network system of the higher network system of load and/or load is made amendment.
For achieving the above object, the embodiment of the invention provides a kind of load control system, and this system comprises: load Control Server, first network system and second network system;
Wherein, the load Control Server comprises above-mentioned load control device,
Described first network system, be used for when described load Control Server is made amendment to the reselecting parameters of the system message of first network system, the subscriber equipment of reselecting parameters in first network system in the system message of first network system revised broadcasted;
Described second network system, be used for when described load Control Server is made amendment to the reselecting parameters of the system message of second network system, the subscriber equipment of reselecting parameters in second network system in the system message of second network system revised broadcasted.
The beneficial effect of the embodiment of the invention is, determine with the load of coverage cell whether different network systems is in non-equilibrium state by monitoring network system, when being in non-equilibrium state, reselecting parameters is adjusted, make user's gravity treatment more easily to rete mirabile network system, guarantee the load balance of different network systems with coverage cell.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the invention, constitutes the application's a part, does not constitute the qualification to the embodiment of the invention.In the accompanying drawings:
Fig. 1 is the load control method flow chart of the embodiment of the invention 1;
Fig. 2 is the load control method flow chart of the embodiment of the invention 2;
Fig. 3 is a flow chart of determining whether to be between network system poised state in the embodiment of the invention 2;
Fig. 4 is the load control device structural representation of the embodiment of the invention 3;
Fig. 5 is the load control device structural representation of the embodiment of the invention 4;
Fig. 6 is the load control system structural representation of the embodiment of the invention 5.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is described in further detail below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The embodiment of the invention provides a kind of load control method, device and system.Below in conjunction with accompanying drawing the embodiment of the invention is elaborated.
In embodiments of the present invention, determine that with the load of coverage cell whether different network systems is in non-equilibrium state, when being in non-equilibrium state, adjusts reselecting parameters by the monitoring different network systems.Wherein, can be two or more network systems with the different network systems of coverage cell, below is that example describes with two network systems with coverage cell.
Embodiment 1
The embodiment of the invention provides a kind of load control method, and as shown in Figure 1, this method comprises: (seeing step 101) monitored in the load to first network system and the common coverage cell of second network system; If determine that according to monitoring result load is in non-equilibrium state between this first network system and second network system, then to the reselecting parameters in the system message of the low network system of the high network system of the load in this first network system and second network system and/or load make amendment (seeing step 102).
In the present embodiment, by the reselecting parameters in the system message is made amendment, and amended reselecting parameters can be broadcasted, make user's gravity treatment more easily to rete mirabile network system, thereby alleviate the growth of load amount of the high network system of load with coverage cell.
In the present embodiment, this first network system and second network system can be in second generation mobile communications network (2G:Second Generation) network system, 3G (Third Generation) Moblie network (3G:ThirdGeneration) network system, the 4th third generation mobile communication network (4G:Fourth Generation) any two.Perhaps, this first network system and second network system can be any two in WLAN (wireless local area network) (WLAN:Wireless Local Area Network), Wireless Fidelity (WiFi:Wireless Fidelity) network, worldwide interoperability for microwave access (WiMax:Worldwide Interoperability forMicrowave Access) network and the brand-new radio network data communication network Radio Access Networks such as (ZigBee).
By the foregoing description as can be known, when between different network systems during laod unbalance, revise the reselecting parameters in the system message, make user's gravity treatment more easily arrive with coverage cell rete mirabile network system, thereby alleviate the growth of load amount of the high network system of load, guarantee the load balance of different network systems, reduce and set up the probability that business is carried out the network system switching, help the service quality that keeps professional.
Embodiment 2
The embodiment of the invention provides a kind of load control method, is that the 2G network system and second network system are that the 3G network system is that example describes below in conjunction with accompanying drawing and with first network system.
The invention provides a kind of load control method, as shown in Figure 2, this method comprises:
Common certain regional 2G cell of covering and 3G sub-district are called same coverage cell.When load-threshold was set, can be in the following way: for example, (Load Threshold LT) be set to LT1, and the congestion threshold value is LT2 with the PUC threshold value of this 3G sub-district correspondence.The PUC threshold value of 2G network system correspondence is set to LT3, and the congestion threshold value is set to LT4.
In the present embodiment, 0＜LT1＜LT2＜=100% can be set, if the load LT3G＞=LT1 of this 3G sub-district, this 3G sub-district is in and allows to carry out user's control and treatment state so, is referred to as potential user's control (PUC:Potential User Control) treatment state herein; If LT3G＞=LT2, then this 3G sub-district is in congestion state;
In like manner, in the present embodiment, 0＜LT3＜LT4＜=100% can be set, if this 2G cell load LT2G＞=LT3, this 2G cell is in and allows to carry out the PUC treatment state so; If LT2G＞=LT4, then 2G cell is in congestion state.
For example, the load value of this 2G network system is LT2G, and the load value of this 3G network system is LT3G.
Concrete definite process will be described below as shown in Figure 3.
If the judged result of step 203 is not then made amendment to reselecting parameters for being in poised state, get back to the load that step 202 continues monitoring 2G, the common coverage cell of 3G network system.
In the present embodiment, base station controller that can be by first network system, the base station controller of second network system reselecting parameters in the system message after the network amendment separately are sent to relevant base station, are broadcasted to subscriber equipment by the base station.
For example, when with the 3G network load of coverage cell when high, can increase the different quality of handoff threshold value Slimit of system, SearchRAT simultaneously, can also reduce 3G cell quality hysteresis Qhyst1s, and can reduce the biasing of 2G cell quality, make and therefore, make the signal quality that reduces the 3G sub-district, the signal quality that increases 2G cell the user who resides in the 3G sub-district that easier startup is switched to the resident or feasible user who is in idle condition of 2G cell and be easy to insert the low 2G cell of load.
By the foregoing description as can be known, by the load of the common coverage cell of different network systems is monitored, when being in non-equilibrium state between different network systems, alleviate the growth of load amount of the big network system of load, guarantee the load balance of different network systems, reduce and set up the probability that business is carried out the network system switching, help the service quality that keeps professional.
Optionally, in the present embodiment, if the judged result of step 203 is when being in non-equilibrium state, before the execution in step 205, this method also can comprise: whether the difference of time of further judging current time and last change system reselecting parameters is greater than preset value, if greater than preset value execution in step 205 again, proceed monitoring otherwise get back to step 202.For example, this preset value is T3, and the span of this T3 can be Integer[1,3600] and, unit: S.
Concrete, in step 203, determine whether be in non-equilibrium state between 3G and 2G network system according to the LT3G of monitoring and the value of LT2G, can adopt mode as shown in Figure 3 to judge.
As shown in Figure 3, this method comprises:
Determination methods at 3G network is: whether the load value LT3G that judges the 3G sub-district meets or exceeds the PUC threshold value LT1 of this 3G network system correspondence and less than the congestion threshold value LT2 of this 3G network system correspondence, if being LT3G, judged result meets or exceeds LT1 and less than this LT2, be LT1≤LT3G＜LT2, then execution in step 302; Perhaps
Judge whether this LT3G meets or exceeds this LT2, if judged result is the load value LT3G 〉=LT2 of this 3G network system, then execution in step 305;
Determination methods at the 2G network is: whether the load value LT2G that judges the 2G network system meets or exceeds the PUC threshold value LT3 of this 2G network system correspondence and less than the congestion threshold value LT4 of this 2G network system correspondence, if being LT2G, judged result meets or exceeds LT3 and less than this LT4, be LT3≤LT2G＜LT4, then execution in step 308; Perhaps
Judge whether this LT2G meets or exceeds this LT4, if judged result is LT2G 〉=LT4, then execution in step 311.
Whether step 302, the load difference of judging LT3G and LT2G greater than default load difference threshold value, if judged result is for being that then execution in step 303, otherwise finish this process;
Judged result in the step 301 is that LT3G meets or exceeds LT1 and less than this LT2, promptly LT1≤LT3G＜LT2 illustrates that then this 3G sub-district is in the PUC treatment state.In this case, in this step, can judge further that whether load difference between the load value LT2G of the load value LT3G of this 3G network system and 2G network system is greater than default load difference threshold value.
Concrete comparative approach both can will compare between LT3G and the LT2G, also can be in the following way: judge whether to satisfy LT3G-LT2G * alfa＞load difference thresholding;
In the present embodiment, this alfa is the 2G cell load regulation coefficient, and the span of this value can be (1,10), and step-length is 0.1, can be according to the actual conditions value.
Judged result in the step 302 is greater than this load difference thresholding, then further judges this situation, and promptly whether the lasting time of the situation of LT3G-LT2G * alfa＞load difference thresholding surpasses the first Preset Time value T1;
In the present embodiment, the span of this T1 can be Integer[1, and 60] second, but be not limited thereto, can be provided with according to actual conditions.
Step 304 determines that load is in non-equilibrium state between this 3G and 2G network system.
In the present embodiment, the span of this second preset value T2 can be consistent or different with the span of T1, can be provided with according to actual needs.
Step 307 is if the judged result in the step 306 can determine then that for surpassing this T2 load is in non-equilibrium state between this 2G and the 3G.
Concrete comparative approach both can will compare between LT2G and the LT3G, also can be in the following way: judge whether to satisfy LT2G * alfa-LT3G＞load difference thresholding, if judged result is for being that then execution in step 309.
Step 309 if the judged result in the step 308 be greater than this load difference thresholding, is then further judged this situation, and promptly whether time of continuing of the situation of LT2G * alfa-LT3G＞load difference thresholding surpasses preset value, as if judged result for being that then execution in step 310;
In the present embodiment, this preset value can be T1, but is not limited thereto, and can be provided with according to actual conditions.
Step 310, if the judged result in the step 309 is for being, load is in non-equilibrium state between then definite this 3G and 2G network system.
In the present embodiment, this preset value can be T2, and the span of this T2 can be consistent or different with the span of T1, can be provided with according to actual needs.
Step 313 is if the judged result in the step 312 can determine then that for surpassing this T2 load is in non-equilibrium state between this 2G and the 3G.
In the above-described embodiments, when in step 304,307, determining to be in non-equilibrium state between 2G and 3G network system, then in step 204 as shown in Figure 2, can make amendment to the reselecting parameters in the system message of the high 3G Cell Broadcast CB of this load.Specifically can comprise:
At system message 3: increase the different quality of handoff threshold value S of system
Limit, SearchRAT, it is revised as S
Limit, SearchRAT+ Soffset_3g, wherein, this Soffdet_3g is a different system gravity treatment bias, span can be 0～52dB, but is not limited thereto, and this different system gravity treatment bias also can be made amendment according to actual needs.Perhaps, also can reduce this 3G cell quality hysteresis Qhyst1s, it is revised as Qhyst1s-Hoffset, this Hoffset span can be Integer (0～40 by step of 2), unit: dB.
At system message 11 and 12: can reduce the biasing of 2G cell quality, such as with Qoffset1s, n and Qoffset2s, n are revised as Qoffset1 respectively
S, n-Qoffset and Qoffset2
S, n-Qoffset; Wherein, this Qoffset span: Integer (0～50), unit: dB.
Be understandable that the system message parameter that the above-mentioned 3G sub-district that can be used as the modification object is broadcasted can be made amendment by selected part, also can select all to make amendment.
In addition, in the present embodiment, when in step 304,307, determining to be in non-equilibrium state between 2G and 3G network system, in step 204, except the reselecting parameters in the system message of the high 3G Cell Broadcast CB of this load is made amendment, also can specifically can comprise making amendment than the parameter in the system message of the 2G cell that hangs down load:
For example, can be according to the search quality threshold value Qsearch_I in the current search quality gate limit value Qsearch_I modification 2G cell system message 2.
In the present embodiment, as this current search quality threshold value Qsearch_I during, can reduce current search quality gate limit value less than default search quality threshold value.As this current search quality threshold value Qsearch_I during, can increase current search quality gate limit value greater than default search quality threshold value.
For example, the span of Qsearch_I is 0～15 integer.Each integer has been represented a signal quality scope, and is specific as follows: 0=-98dBm, and 1=-94dBm ..., 5=-78dBm, 6=-74dBm, 7=∞ (always), 8=-78dBm, 9=-74dBm,, 13=-58dBm, 14=-54dBm, 15=∞ (never).Default?value＝∞(never)。
When Qsearch_I is in 0～7,, then carry out different system cell gravity treatment if the 2G signal quality is lower than Qsearch_I; When Qsearch_I is in 8～15,, then carry out different system cell gravity treatment if the 2G signal is higher than Qsearch_I.
Therefore, in the present embodiment, this default search quality threshold value is 7, when this current Qsearch_I is in 0～7, promptly less than 7 o'clock, can reduce this Qsearch_I value, helps different system cell gravity treatment.Perhaps work as this current Qsearch_I and be in 8～15,, can increase this Qsearch_I value, help different system cell gravity treatment promptly greater than 7 o'clock.In addition, in the present embodiment, also can be set to 15 by this current Qsearch_I, because Qsearch_I is 15 o'clock, its signal quality is ∞ (never), therefore, makes the user be easy to search for 2G cell, is more conducive to different system cell gravity treatment.
Be understandable that in the 3G sub-district, when the 3G cell signal quality that UE monitored is lower than different system quality of handoff threshold value, UE will start different system cell gravity treatment.Measured this 3G cell signal quality is increased 3G cell quality hysteresis, measured adjacent 2G cell signal quality is deducted the biasing of 2G cell quality after, carry out the cell signal mass ratio, select the best sub-district of signal quality to carry out resident then.
By such scheme as can be known, when with the 3G network load of coverage cell when high, reselecting parameters in the system message of the high 3G Cell Broadcast CB of load is carried out above-mentioned modification, and the reselecting parameters in the system message of the 3G Cell Broadcast CB that load is high is as the different quality of handoff threshold value S of system
Limit, SearchRATRaise, and can reduce the signal quality of 3G sub-district, increase the signal quality of 2G cell, will make the user who resides in the 3G sub-district that easier startup is switched to the resident or feasible user who is in idle condition of 2G cell like this and be easy to insert the low 2G cell of load, thereby reduced the new business of in the 3G sub-district, initiating, alleviated the load of 3G network system.
On the other hand, in the above-described embodiments, when in step 310,313, determining to be in non-equilibrium state between 2G and 3G network system, in step 204, can make amendment to the reselecting parameters in the system message of the high 2G cell broadcasting of this load.
For example, can revise parameter among the system message type 2ter that 2G cell broadcasts:
If Qsearch_I is at 0～7 o'clock, then Qsearch_I is revised as min{Qsearch_I+OffSet_2g, 7}; If Qsearch_I is at 8～15 o'clock, then Qsearch_I is revised as max{Qsearch_I-OffSet_2g, 8}.Perhaps Qsearch_I is revised as 7, this Qsearch_I representative always carrying out measurement and gravity treatment of 3G sub-district.Wherein, this OffSet_2g is a different system gravity treatment bias in the 2G cell.Its scope can be the integer between 0～7, but is not limited thereto, and also can make amendment according to actual conditions.
In addition, except the parameter in the system message of 2G cell is made amendment, also can make amendment, for example, reduce the different quality of handoff thresholding S of system of 3G sub-district the parameter in the 3G network
Limit, ScarchRAT, it is revised as S
Limit, SearchRAT-Soffset_3g.
From the above, when with the 2G offered load of coverage cell when high, the reselecting parameters in the system message carried out above-mentioned modification after, the S of the 3G network of the same coverage cell that load is low
Limit, SearchRATReduce, and reduction 2G cell signal quality, will make the user who resides in 2G cell that easier startup is switched to the resident or feasible user who is in idle condition in 3G sub-district like this and be easy to insert the low 3G sub-district of load, thereby reduced the new business of in 2G cell, initiating, alleviated the load of 2G network system.
What deserves to be explained is, in the above-described embodiments, determine that the process that whether is in non-equilibrium state between system can adopt random order to carry out, and is not limited to the specific descriptions of the foregoing description.
By the foregoing description as can be known, be in the PUC state but during non-congestion state and the load difference between this system and another system during in certain system greater than load difference thresholding, can make amendment to load higher system ground reselecting parameters, alleviate the growth of load amount of native system, make the load balance between different network systems, therefore, can under not reaching congested situation, certain system realize load balance between system in advance by such scheme; In addition, high and be under the situation of congestion state in certain system load, when another system is in non-congestion state, revise the system message that it is broadcasted, make the user who is in Idle state be more prone to gravity treatment to different system cell, thereby alleviated the growth of load amount of native system, guaranteed the load balance of different network systems.
Embodiment 3
The embodiment of the invention provides a kind of load control device, and as shown in Figure 4, this device comprises monitoring means 401, status determining unit 402, parameter adjustment unit 403.Wherein, monitoring means 401 is used for the load of the common coverage cell of different network systems is monitored, and this different network systems comprises first network system and second network system; Status determining unit 402 is used for determining that according to monitoring result load is in non-equilibrium state between this first network system and second network system; Parameter adjustment unit 403 is connected with status determining unit 402, the definite result who is used in status determining unit 402 is when being in non-equilibrium state between first network system and second network system, and the reselecting parameters in the system message of the lower network system of the higher network system of load and/or load is made amendment.
In the present embodiment, this load control device can be used as a multiple-network system community user Control Server and uses separately.After this user's Control Server is made amendment to the reselecting parameters in the system message of the lower network system of the higher network system of load and/or load, can notify the base station controller of first network system, second network system, base station controller by each automatic network reselecting parameters in the system message after the network amendment separately sends to corresponding base station, and broadcasts to subscriber equipment by the base station.
In addition, this load control device also can with a certain network equipment, for example, base station controller integrates.When integrating with base station controller, can integrate with any one base station controller in the base station controller of first network system and second network system, after the reselecting parameters in the system message is made amendment, can notify another that base station controller of this load control device is not set amended parameter by the communication link of setting up in advance.In this case, this device also comprises transmitting element 505, and this transmitting element 505 is used to send amended reselecting parameters.Transmission herein, both pointed to the base station in the network at integrated base station controller place send (broadcasting) by the base station, also refer to amended reselecting parameters is sent in the base station controller of another network system.Such as, this load control device is integrated in the base station controller of 3G, this transmitting element 505 then, and the base station node B of the 3G that the amended reselecting parameters of 3G can be sent is broadcasted by the subscriber equipment of NodeB in the 3G sub-district; The amended reselecting parameters of 2G can also be sent in the base station controller of 2G, be sent in the base station of 2G, broadcast by the subscriber equipment of base station in 2G cell of 2G by the base station controller of this 2G.
The course of work of this device repeats no more as described in the embodiment 1 herein.
In the present embodiment,, make user's gravity treatment more easily, thereby alleviate the growth of load amount of the high network system of load to rete mirabile network system with coverage cell by the reselecting parameters in the system message is made amendment.
In the present embodiment, this first network system and second network system can be in second generation mobile communications network (2G:Second Generation) network system, 3G (Third Generation) Moblie network (3G:ThirdGeneration) network system, the 4th third generation mobile communication network (4G:Fourth Generation) any two.Perhaps, this first network system and second network system can be any two in WLAN (wireless local area network) (WLAN:Wireless Local Area Network), Wireless Fidelity (WiFi:Wireless Fidelity) network, worldwide interoperability for microwave access (WiMax:Worldwide Interoperability forMicrowave Access) network and the brand-new radio network data communication network Radio Access Networks such as (ZigBee).
What deserves to be explained is,, do not have base station controller, broadcast then by the reselecting parameters in the system message of base station reception load control device modification, and to subscriber equipment if in flat network topology or evolvement network.
Accordingly, if adopt load control device to be integrated in the scheme of other network equipments, then this load control device can be integrated in the base station of flat network topology or evolvement network.
By the foregoing description as can be known, when between different network systems during laod unbalance, revise the reselecting parameters in the system message and amended reselecting parameters broadcasted, make user gravity treatment rete mirabile network system more easily, thereby alleviate the growth of load amount of the bigger network system of load, guarantee the load balance of different network systems.
Embodiment 4
The embodiment of the invention provides a kind of load control device, and as shown in Figure 5, this device comprises monitoring means 501, status determining unit 502, parameter adjustment unit 504, and its effect is similar to Example 3, repeats no more herein.
In addition, as shown in Figure 5, this device also comprises time determining unit 503, and when this status determining unit 502 was determined to be in non-equilibrium state, this time determining unit 503 was used for determining that the difference of current time and preceding time of once revising this reselecting parameters is greater than preset value T3; This parameter adjustment unit 504 is used in definite result of this time determining unit 503 this reselecting parameters being made amendment for greater than the 3rd preset value the time.
As shown in Figure 5, this device also comprises transmitting element 505, and this transmitting element 505 is used to send amended this reselecting parameters.Like this, make user gravity treatment rete mirabile network system more easily, thereby alleviate the growth of load amount of the bigger network system of load, guarantee the load balance of different network systems, reduce and set up the probability that business is carried out the network system switching, help the service quality that keeps professional.
In the present embodiment, this status determining unit 502 can adopt as shown in Figure 3 flow process, and whether balance is judged to the state between system, and its process repeats no more as described in the embodiment 2 herein.
In the present embodiment, when parameter adjustment unit 504 can be determined to be in non-equilibrium state between system according to status determining unit 502, the parameter in the system message is made amendment.
For example, when status determining unit 502 was determined to be in non-equilibrium state between 2G and 3G network system, when higher as if the 3G load, can make amendment to the reselecting parameters in the system message of the high 3G Cell Broadcast CB of this load in parameter adjustment unit 504.Specifically can comprise:
At system message 3: increase the different quality of handoff threshold value S of system
Limit, SearchRAT, it is revised as S
Limit, SearchRAT+ Soffset_3g, wherein, this Soffdet_3g is a different system gravity treatment bias, span can be 0～52dB, but is not limited thereto, and this different system gravity treatment bias also can be made amendment according to actual needs.Perhaps, also can reduce this 3G cell quality hysteresis Qhyst1s, it is revised as Qhyst1s-Hoffset, this Hoffset span can be Integer (0～40 by step of 2), unit: dB.
At system message 11 and 12: can reduce the biasing of 2G cell quality, such as with Qoffset1s, n and Qoffset2s, n are revised as Qoffset1 respectively
S, n-Qoffset and Qoffset2
S, n-Qoffset; Wherein, this Qoffset span: Integer (0～50), unit: dB.
In addition, this parameter adjustment unit 504 also can specifically can comprise making amendment than the parameter in the system message of the 2G cell that hangs down load except the reselecting parameters in the system message of the high 3G Cell Broadcast CB of this load is made amendment:
For example, can be according to the search quality threshold value Qsearch_I in the current search quality gate limit value Qsearch_I modification 2G cell system message 2.
In the present embodiment, as this current search quality threshold value Qsearch_I during, can reduce current search quality gate limit value less than default search quality threshold value.As this current search quality threshold value Qsearch_I during, can increase current search quality gate limit value greater than default search quality threshold value.
On the other hand, when status determining unit 502 was determined to be in non-equilibrium state between 2G and 3G network system, if the 2G load is higher, then can make amendment to the reselecting parameters in the system message of the high 2G cell broadcasting of this load in parameter adjustment unit 504.
For example, can revise parameter among the system message type 2ter that 2G cell broadcasts:
If Qsearch_I is at 0～7 o'clock, then Qsearch_I is revised as min{Qsearch_I+OffSet_2g, 7}; If Qsearch_I is at 8～15 o'clock, then Qsearch_I is revised as max{Qsearch_I-OffSet_2g, 8}.Perhaps Qsearch_I is revised as 7, this Qsearch_I representative always carrying out measurement and gravity treatment of 3G sub-district.Wherein, this OffSet_2g is a different system gravity treatment bias in the 2G cell.Its scope can be the integer between 0～7, but is not limited thereto, and also can make amendment according to actual conditions.
In addition, except the parameter in the system message of 2G cell is made amendment, also can make amendment, for example, reduce the different quality of handoff thresholding S of system of 3G sub-district the parameter in the 3G network
Limit, SearchRAT, it is revised as S
Limit, SearchRAT-Soffset_3g.
In the present embodiment, this load control device can be used as a multiple-network system community user Control Server and uses separately, after the reselecting parameters of this user's Control Server in the system message of the lower network system of the network system higher to load and/or load made amendment, can notify the base station controller of first network system, second network system, base station controller by each automatic network reselecting parameters in the system message after the network amendment separately is sent to base station separately, and is broadcasted to subscriber equipment by the base station.
In addition, as previously mentioned, this load control device also can be integrated in the base station of base station controller or flat framework/evolvement network.
By the foregoing description as can be known, when between different network systems during laod unbalance, revise the reselecting parameters in the system message and amended reselecting parameters broadcasted, make user's gravity treatment more easily to rete mirabile network system, thereby alleviate the growth of load amount of the bigger network system of load, guarantee the load balance of different network systems.
Embodiment 5
The embodiment of the invention provides a kind of load control system, and as shown in Figure 6, this load control system comprises load Control Server 601, first network system 602 and second network system 603: wherein,
In the present embodiment, load Control Server 601 constitutes as described in embodiment 3 and the embodiment 4, repeats no more herein.
By the foregoing description as can be known, by this system monitoring between different network systems during laod unbalance, can revise the reselecting parameters in the system message, and amended reselecting parameters is broadcasted by different network systems, make user's gravity treatment more easily to rete mirabile network system, thereby alleviate the growth of load amount of the bigger network system of load, guarantee the load balance of different network systems.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a load control method is characterized in that, described method comprises:
Load to the common coverage cell of different network systems is monitored, and described different network systems comprises first network system and second network system;
If determine that according to monitoring result load is in non-equilibrium state between described first network system and second network system, then the reselecting parameters in the system message of the lower network system of the higher network system of load and/or load is made amendment.
2. method according to claim 1 is characterized in that, described method also comprises: send amended described reselecting parameters.
3. method according to claim 1 is characterized in that, describedly determines that according to monitoring result load is in non-equilibrium state between described first network system and second network system, comprising:
If the load of described first network system meets or exceeds that the potential user of this network system controls thresholding and less than the congestion threshold of this network system, and the load difference between described first network system and second network system determines then that greater than default load difference threshold value load is in non-equilibrium state between described first network system and second network system; Or,
If the load of described first network system meets or exceeds that the potential user of described first network system controls thresholding and less than the congestion threshold of described first network system, and the load difference between described first network system and second network system further judges then greater than default load difference threshold value whether the load difference between described first network system and second network system surpasses first preset value greater than the duration of presetting load difference threshold value;
If judged result determines then that for surpassing first preset value load is in non-equilibrium state between described first network system and second network system.
4. method according to claim 1 is characterized in that, describedly determines that according to monitoring result load is in non-equilibrium state between described first network system and second network system, comprising:
If the load of described first network system meets or exceeds the congestion threshold of the described first network system correspondence, and the load of described second network system determines then that less than the congestion threshold of the described second network system correspondence load is in non-equilibrium state between described first network system and described second network system; Or
If the load of described first network system meets or exceeds the congestion threshold of the described first network system correspondence, and the load of described second network system is less than the congestion threshold of the described second network system correspondence, the load that the load of then further judging described first network system meets or exceeds the congestion threshold of the described first network system correspondence and described second network system less than duration of the congestion threshold of the described second network system correspondence whether above second preset value;
If judged result is for surpassing, determine that then load is in non-equilibrium state between described first network system and described second network system.
5. according to the described method of each claim of claim 1 to 4, it is characterized in that before the reselecting parameters in the system message of the lower network system of the network system higher to load and/or load was made amendment, described method also comprised:
If the difference of current time and preceding time of once revising described reselecting parameters is greater than the 3rd preset value, then definite described reselecting parameters is made amendment.
6. according to the described method of each claim of claim 1 to 4, it is characterized in that the reselecting parameters in the system message is made amendment to be comprised:
Quality gate limit value in the system message is made amendment.
7. method according to claim 6 is characterized in that, is that 3G network system, second network system are that 2G network system and 3G network system load are higher if load is in first network system of non-equilibrium state, then:
Described reselecting parameters in the system message of the higher network system of load is made amendment, comprising:
Increase the quality gate limit value of described 3G network system, and one of following modification or its combination: reduce the 3G network system the quality hysteresis and, reduce the quality bias of 2G network system;
Described reselecting parameters in the system message of the lower network system of load is made amendment, comprising:
Current search quality gate limit value to described 2G network system is made amendment.
8. method according to claim 6 is characterized in that, is that 3G network system, second network system are that 2G network system and the load of 2G network system are higher if load is in first network system of non-equilibrium state, then:
Described reselecting parameters in the system message of the higher network system of load is made amendment, comprising: the current search quality threshold to described 2G network system is made amendment;
Described reselecting parameters in the system message of the lower network system of load is made amendment, comprising: the quality gate limit value that reduces described 3G network system.
9. a load control device is characterized in that, described device comprises:
Monitoring means, described monitoring means are used for the load of the common coverage cell of different network systems is monitored, and described different network systems comprises first network system and second network system;
Status determining unit, described status determining unit are used for determining that according to monitoring result load is in non-equilibrium state between described first network system and second network system;
The parameter adjustment unit, be connected with described status determining unit, the definite result who is used in described status determining unit is when being in non-equilibrium state between first network system and second network system, and the reselecting parameters in the system message of the lower network system of the higher network system of load and/or load is made amendment.
10. device according to claim 9 is characterized in that described device also comprises transmitting element, is connected with described parameter adjustment unit, is used to send amended described reselecting parameters.
11. device according to claim 9 is characterized in that, described device also comprises:
The time determining unit, described time determining unit is connected with the parameter adjustment unit with described status determining unit, and the difference that is used for determining current time and preceding time of once revising described reselecting parameters is greater than the 3rd preset value;
Described parameter adjustment unit is used in definite result of described time determining unit described reselecting parameters being made amendment for greater than the 3rd preset value the time.
12. a load control system is characterized in that, described system comprises: with load Control Server, first network system and second network system;
Wherein, described load Control Server comprises as claim 9,11 or 12 described load control devices,
Described first network system, be used for when described load Control Server is made amendment to the reselecting parameters of the system message of first network system, the subscriber equipment of reselecting parameters in first network system in the system message of first network system revised broadcasted;
Described second network system, be used for when described load Control Server is made amendment to the reselecting parameters of the system message of second network system, the subscriber equipment of reselecting parameters in second network system in the system message of second network system revised broadcasted.
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