CN1146175C - Method for controlling system load in access procedure of CDMA system - Google Patents
Method for controlling system load in access procedure of CDMA system Download PDFInfo
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- CN1146175C CN1146175C CNB011262354A CN01126235A CN1146175C CN 1146175 C CN1146175 C CN 1146175C CN B011262354 A CNB011262354 A CN B011262354A CN 01126235 A CN01126235 A CN 01126235A CN 1146175 C CN1146175 C CN 1146175C
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Abstract
The present invention relates to a method for controlling system loads in the process of the access of a code division multiple access system. The present invention is characterized in that the present invention comprises the following steps that firstly, system load information is established in system information; before a user prepares for access, the broadcast of the system load information is received; the user judges the received system load information; if the loads of the current cell, frequency or system are high, the code division multiple access system is accessed to other cells, frequencies or systems through guide information, else the code division multiple access system is accessed in a normal access process. Therefore, the system loads are reduced for preventing the further exacerbation of performance; the load balance among the cells, the frequencies and the systems can be dynamically realized through the broadcast of the system load information.
Description
Technical field
The present invention relates to communication system, relate in particular to the method for control system load in the cdma cellular mobile communication system access procedure.
Background technology
Because CDMA technology has characteristics such as frequency efficiency height, antijamming capability are strong, is widely used in the digital mobile communication field.3-G (Generation Three mobile communication system) adopts CDMA technology, has also become a kind of common recognition.At present, there are three kinds of schemes to be received to the selection of IMT-2000 air interface, are respectively: wideband CDMA (WCDMA), CDMA2000 and TD-SCDMA.
System loading can be determined according to the strategy of self according to the various measurement results of user/system, the various parameters or the Virtual network operator of sub-district.When mobile communcations system inserted the shared resource of user or system interference and surpasses the thresholding of setting, system was in higher load condition.If at this moment there is a large number of users to prepare connecting system, because system's available resources deficiency, and access procedure causes system interference to increase, and causes the system loading mis-behave.
In the present high load capacity WCDMA system, when the user prepared connecting system, the processing method of system was as follows: 1) user carries out access attempts, and the base station sends the refusal indication to the user; 2) user carries out access procedure, and the base station controller refusing user's inserts, and comprises corresponding guidance information in the admission reject signaling, and the indication user inserts other frequency or system; 3) system is provided with thresholding in system information, forbids that the user inserts from this sub-district.Concrete access procedure as shown in Figure 1.When the user prepared to insert, first read system information judged whether to exist and inserts the sub-district, and when not having the access sub-district, access procedure finishes.When having the access sub-district, the user starts access procedure, and base station (Base Station) inserts according to current wireless environment refusal/allowance user.When the user received that refusal inserts indication, the user withdrawed from access procedure.When the user received that permitting access indicates, the user prepared to set up signaling with base station controller (Base Station Controller) and is connected, and base station controller is set up signaling according to current wireless environment with system resource condition refusal/allowance user and system and is connected.When the base station controller refusing user's inserted, the user indicated according to system and withdraws from access procedure, and indication is linked into other frequency or system according to system.When base station controller allowance user inserts, the normal connecting system of user.From above-mentioned access procedure as can be known, the user needs twice access, promptly all connects with base station and base station controller, just can connecting system.In this process, the user can not determine whether system is in higher load condition, and the user is connecting system blindly just, and according to system's indication, is linked into other frequency, system or withdraws from access procedure.And access procedure has also taken part system resource, causes the further deterioration of system loading performance.When not having the access sub-district, the user also can't obtain information, independently is linked into other sub-district, frequency or system.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming of prior art, and a kind of user who provides is by the receiving system broadcast message of loading, judges whether current system is in the method for control system load in a kind of code division multiple access system access procedure of higher load condition.According to this method, when system is in high load capacity,, inserts load light sub-district or other system, thereby reduce system loading by the guidance information that system information provides, prevent the further deterioration of performance.And, can dynamically realize the load balancing between each sub-district, frequency or system by the system loading information broadcast.
In order to realize purpose of the present invention, the technical scheme that the present invention takes is: the method for control system load in a kind of code division multiple access system access procedure, be characterized in, and may further comprise the steps:
1) at first in mobile communication system, sets up system loading information;
2) system is issued to each base station with system loading information from base station controller, and this system loading information of each base stations control is broadcasted in the broadcast channel of control sub-district;
3) active user's receiving system load broadcast message in persistent district, the system loading information that is received is judged, and the operation of execution sub-district connecting system, if current area, frequency or system loading surpass the predefined load thresholding of system, then be linked into other sub-district, frequency or system by guidance information; Otherwise, carry out connecting system by normal access procedure.
The method of control system load in above-mentioned a kind of code division multiple access system access procedure, wherein, described system loading information is determined according to the various measurement results of user/base station/base station controller and the various parameters of sub-district/base station/base station controller.
The method of control system load in above-mentioned a kind of code division multiple access system access procedure, wherein, the various measurement results of described user/base station/base station controller comprise: the measured value of the present output power of the signal to noise ratio of subscriber signal, subscriber signal maximum power, base station, the available code resource number of base station controller, active user's number, usable frequency number; The various parameters of described sub-district/base station/base station controller comprise: frequency maximum number, parameter that the peak power output of base station, base station controller are supported.
The method of control system load in above-mentioned a kind of code division multiple access system access procedure, wherein, described system loading information is to bring in constant renewal in according to real-time measuring datas such as current system's available resources, system interference.
The method of control system load in above-mentioned a kind of code division multiple access system access procedure, wherein, the information on load described in the step 1) comprises current each sub-district, frequency and system loading indication information, also comprises the information on load of neighbor cell, frequency and system.
The method of control system load in above-mentioned a kind of code division multiple access system access procedure, wherein, the guidance information described in the step 3) is meant the information on load of the neighbor cell, frequency or the system that contain at information on load.
The method of control system load in above-mentioned a kind of code division multiple access system access procedure, wherein, the step of judgement described in the step 3) and execution sub-district connecting system is as follows:
1) user receiving system broadcast message and system loading broadcast message;
2) user judges whether to exist according to system broadcast information and can insert the sub-district;
3) if can not insert the sub-district, and system loading information do not provide corresponding guidance information, and then the user is in holding state, not connecting system; If corresponding guidance information is provided in the system loading information, then the user selects one to insert the sub-district according to guidance information, enters step 4) then;
4) user judges that according to information on load whether indication mechanism is in higher load condition for the information on load of current area, frequency or system, if current area, frequency or system are in high load capacity, then skips to 6) step; Otherwise enter 5) step;
5) user is by normal access procedure connecting system, and access finishes;
6) user is linked into other sub-district, frequency or system by the guidance information of neighbor cell, frequency or the system of the indication of system loading information, and access finishes.
Because the present invention has adopted above technical scheme, in system information, increase system loading information, this information on load comprises guidance information.When the user when preparing to insert, monitoring system information on load at first if system loading information indicates current system to be in higher load condition, then passes through the guidance information that received, is linked into other sub-district, frequency or system; If system loading information indicates current system loading light, then finish access by access procedure.In this way, promptly avoided introducing unnecessary signaling procedure in the access procedure, can make the user possess the self-aiming function again, initiatively avoided access failure, realized the system congestion controlled function.Simultaneously, system also can be according to the load condition of neighbor cell, frequency or system, and by the load broadcast message is set, the user density between each sub-district of flexible configuration, frequency or system realizes load balancing.
Description of drawings
Concrete structure performance of the present invention is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a subscriber access system process schematic diagram in the prior art.
Fig. 2 is a subscriber access system flow chart in the prior art.
Fig. 3 is the user's access procedure schematic diagram under the broadcast system information on load situation of the present invention.
Fig. 4 is the user's access procedure flow implementation illustration intention under the broadcast system information on load situation of the present invention.
Embodiment
The present invention proposes the method for control system load in a kind of code division multiple access system access procedure.Base station controller is determined system loading information according to the various measurement results of user/base station/base station controller, the various parameters of sub-district/base station/base station controller or the strategy of Virtual network operator.Comprise the information indication whether current area, frequency and system are in high load capacity in the system loading information, and comprise the access indication information of neighbor cell, frequency or system.System loading information is issued to the base station from base station controller, and the system loading information that receives is in charge of in the base station, and by controlling the broadcast channel broadcasts system loading information of sub-district.When system loading information indication current area, frequency or the system that receives from the sub-district as the user is in high load capacity, insert other sub-district, frequency or system (guidance information comprises neighbor cell, frequency or system loading information) by corresponding access guidance information.If the sub-district of receiving, frequency and system loading information indicating system load are light, then by normal access procedure connecting system.
Concrete grammar and step are as follows:
1) at first in mobile communication system, sets up system loading information;
2) system is issued to each base station with system loading information from base station controller, and this system loading information of each base stations control is broadcasted in the broadcast channel of control sub-district;
3) active user's receiving system load broadcast message in persistent district, the system loading information that is received is judged, and the operation of execution sub-district connecting system, if current area, frequency or system loading are heavy, then be linked into other sub-district, frequency or system by guidance information; Otherwise, carry out connecting system by normal access procedure.
System controls the access user between each sub-district, frequency or system by adjusting the load broadcast message, thereby realizes the load balance between sub-district, frequency and system.
Further describe concrete feature of the present invention below by an embodiment.
As shown in Figure 3.Mobile communication system is determined system loading information according to the various measurement results of user/base station/base station controller, the various parameters of sub-district/base station/base station controller or the strategy of Virtual network operator.System will
As shown in Figure 3.Mobile communication system is determined system loading information according to the various measurement results of user/base station/base station controller, the various parameters of sub-district/base station/base station controller or the strategy of Virtual network operator.System is issued to each base station with this information on load from base station controller, and the information on load that each base station issues according to system and the measurement result of this base station are upgraded information on load, then the information on load of this renewal are broadcasted on the broadcast channel of control sub-district.
Comprise in system broadcast information as shown in Figure 4 under the system loading information state, the step of subscriber access system is as follows:
1) user receiving system broadcast message and system loading broadcast message;
2) user judges whether to exist according to system broadcast information and can insert the sub-district;
3) if can not insert the sub-district, and system loading information do not provide corresponding guidance information, and then the user is in holding state, not connecting system; If corresponding guidance information is provided in the system loading information, then the user selects one to insert the sub-district according to guidance information, enters step 4) then;
4) user judges that according to information on load whether indication mechanism is in higher load condition for the information on load of current area, frequency or system, if current area, frequency or system are in high load capacity, then skips to 6) step; Otherwise enter 5) step;
5) user is by normal access procedure connecting system, and access finishes;
6) user is linked into other sub-district, frequency or system by the guidance information of neighbor cell, frequency or the system of the indication of system loading information, and access finishes.
Claims (7)
1, the method for control system load in a kind of code division multiple access system access procedure is characterized in that, may further comprise the steps:
1) at first in mobile communication system, sets up system loading information;
2) system is issued to each base station with system loading information from base station controller, and this system loading information of each base stations control is broadcasted in the broadcast channel of control sub-district;
3) active user's receiving system load broadcast message in persistent district, the system loading information that is received is judged, and the operation of execution sub-district connecting system, if current area, frequency or system loading surpass the predefined load thresholding of system, then be linked into other sub-district, frequency or system by guidance information; Otherwise, carry out connecting system by normal access procedure.
2, the method for control system load in a kind of code division multiple access system access procedure according to claim 1, it is characterized in that described system loading information is determined according to the various measurement results of user/base station/base station controller and the various parameters of sub-district/base station/base station controller.
3, the method for control system load in a kind of code division multiple access system access procedure according to claim 2, it is characterized in that the various measurement results of described user/base station/base station controller comprise: the measured value of the present output power of the signal to noise ratio of subscriber signal, subscriber signal maximum power, base station, the available code resource number of base station controller, active user's number, usable frequency number; The various parameters of described sub-district/base station/base station controller comprise: frequency maximum number, parameter that the peak power output of base station, base station controller are supported.
4, the method for control system load in a kind of code division multiple access system access procedure according to claim 1 and 2 is characterized in that, described system loading information is to bring in constant renewal in according to current system's available resources and system interference real-time measuring data.
5, the method for control system load in a kind of code division multiple access system access procedure according to claim 1, it is characterized in that, information on load described in the step 1) comprises current area, frequency and system loading indication information, also comprises the information on load of neighbor cell, frequency and system.
6, the method for control system load in a kind of code division multiple access system access procedure according to claim 1 is characterized in that the guidance information described in the step 3) is meant the information on load of the neighbor cell, frequency or the system that contain at information on load.
7, the method for control system load in a kind of code division multiple access system access procedure according to claim 1 is characterized in that, the step of judgement described in the step 3) and execution sub-district connecting system is as follows:
1) user receiving system broadcast message and system loading broadcast message;
2) user judges whether to exist according to system broadcast information and can insert the sub-district;
3) if can not insert the sub-district, and system loading information do not provide corresponding guidance information, and then the user is in holding state, not connecting system; If corresponding guidance information is provided in the system loading information, then the user selects one to insert the sub-district according to guidance information, enters step 4) then;
4) user judges that according to information on load whether indication mechanism is in higher load condition for the information on load of current area, frequency or system, if current area, frequency or system are in high load capacity, then skips to 6) step; Otherwise enter 5) step;
5) user is by normal access procedure connecting system, and access finishes;
6) user is linked into other sub-district, frequency or system by the guidance information of neighbor cell, frequency or the system of the indication of system loading information, and access finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011262354A CN1146175C (en) | 2001-07-18 | 2001-07-18 | Method for controlling system load in access procedure of CDMA system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011262354A CN1146175C (en) | 2001-07-18 | 2001-07-18 | Method for controlling system load in access procedure of CDMA system |
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| Publication Number | Publication Date |
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| CN1398076A CN1398076A (en) | 2003-02-19 |
| CN1146175C true CN1146175C (en) | 2004-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011262354A Expired - Fee Related CN1146175C (en) | 2001-07-18 | 2001-07-18 | Method for controlling system load in access procedure of CDMA system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100544458C (en) * | 2004-08-13 | 2009-09-23 | Ut斯达康通讯有限公司 | Dynamic resource allocation method in the centralized base station |
| CN100388857C (en) * | 2004-08-18 | 2008-05-14 | 华为技术有限公司 | Method for realizing charge share in wireless honeycomb network superposition covering area |
| CN101110659B (en) * | 2006-07-17 | 2011-12-07 | 华为技术有限公司 | Method for distributing subdistrict frequency band and network appliance thereof |
| US8655366B2 (en) | 2009-03-02 | 2014-02-18 | Nec Corporation | Radio base station and interference equalization method in mobile communication system |
| US9220057B2 (en) * | 2010-10-22 | 2015-12-22 | Telefonaktiebolaget L M Ericsson (Publ) | Operator selecting apparatus and method for selecting a home operator for each communication device in a group |
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Granted publication date: 20040414 Termination date: 20170718 |