CN1805587A - Access control method in mobile communication system - Google Patents
Access control method in mobile communication system Download PDFInfo
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- CN1805587A CN1805587A CN 200410079677 CN200410079677A CN1805587A CN 1805587 A CN1805587 A CN 1805587A CN 200410079677 CN200410079677 CN 200410079677 CN 200410079677 A CN200410079677 A CN 200410079677A CN 1805587 A CN1805587 A CN 1805587A
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Abstract
The invention relates to mobile communication technique, which provides an access control method to confirm the access successful rate of the user with high priority to improve the service property of communication system. In said invention, it detects the system load, and when there is overload, it distributes more resource to the user with high priority and less resource to the user with low priority to confirm the access successful rate of the user with high priority.
Description
Technical field
The present invention relates to mobile communication technology, particularly the connection control method in the mobile communication system.
Background technology
Along with being showing improvement or progress day by day of mobile communication technology, the sharp increase of mobile subscriber's quantity, this has brought new pressure to mobile communication system, particularly the access control technology in the mobile communication system is had higher requirement.The access control technology is a kind of control method that realizes in the mobile communication system subscriber equipment (User Equipment is called for short " UE ") access wireless channel.
Below the access control technology in the mobile communication system is made brief description.In mobile communication system, UE is in each neighbor cell when mobile, and after entering completing place, some sub-districts and registering, UE just resides in this sub-district, and enters idle condition, and this sub-district also just is called the current area of UE.Under idle condition, if UE carries out the subdistrict position renewal process, perhaps need the paging that the sub-district is come is replied, perhaps need to set up calling with other user, comprise service request, the request of sending SMS message etc., then UE can send insert request to the current area base station.Need to prove that random access procedure is initiated by this UE.UE sends the request of access to cell base station on Random Access Channel, carry out access exploration.Receive the access request of travelling carriage when network side after, just return letter road assignment messages to UE on a common signal channel, UE and base station are mutual at the enterprising line data of particular channel that distributes then.Need to prove that also the random access procedure that UE initiates is the access-in resource according to the current area base station, and finish according to specific algorithm.UE selects access slot in available access-in resource, this selection is at random, and the base station is after receiving the access exploration of travelling carriage then, and cell base station just sends one and inserts Indication message to UE, shows whether current UE inserts success.Get nowhere if insert at random, UE then can't carry out data interaction with current area so, can not finish the function of conversation or transfer of data.
In present mobile communication system, the resident current area of UE remains one, and the access slot resource of a cell base station is limited, insert a base station simultaneously as a plurality of UE, and when selecting identical access slot at random, access interference takes place possibly, thereby cause the failure of access procedure, especially intensive and this situation of hot zones very easily takes place in urban population.
Handling Random Access Channel (Random Access CHannel in the prior art, abbreviation " RACH ") in the access procedure, priority level according to subscriber access system, give the different access-in resource of UE of respective user, as more access subchannel, make user's access network faster of high priority connecting system.
Specifically describe the detailed process that processing UE inserts at random in the prior art below in conjunction with figure l.
At first, in step 100, UE determines access slot and preamble signature.UE is according to (the Access Class of the access grade in the access parameter, be called for short " AC ") and access service grade (Access ServiceClass, abbreviation " ASC ") mapping relations and UE are stored in user identity and differentiate module (SubscriberIdentification Module, be called for short " SIM ") and the user serve identification module (User Service entityModule, abbreviation " USIM ") the AC information in, determine available set of sub-channels, an and optional therein subchannel, determine available access slot collection, optional again access slot, determine available preamble signature collection, and optional again preamble signature.Need to prove, stored AC information among the UE, the AC scope is that 0 to 15,15 priority is the highest, and radio network controller provides the mapping relations of AC to ASC in system message.Wherein, 25331 li of agreements in the WCDMA standard, in order to divide to inserting channel resource, defined ASC, ASC is divided into 0-7 totally 8 classes, 0 is the highest, a kind of method of salary distribution of the corresponding Physical Random Access Channel of each class (Physical Random Access Channel is called for short " PRACH ") channel resource.The UE read system message can be according to the mapping relations of AC and ASC, and obtain oneself ASC number, and then obtain the Sub-Channel Number that can insert.When UE carries out the subdistrict position renewal process, perhaps need the paging that the sub-district is come is replied, perhaps UE needs and other user set up calling, comprises service request, the request of sending SMS message etc., and then UE can send the request of access to the current area base station.Before UE access mobile communication system, to check earlier to guarantee that the access parameter of accepting from the base station is current, access parameter wherein comprise lasting parameter (0-9,10-15), continue that index word, initial access power require, the value of the quantity of access channel, the quantity of preamble signature, the maximum length that inserts message, various overload category, access attempts compensating parameter etc.After UE undated parameter or definite parameter were current, this UE just began access procedure.
Subsequently, in following step 110, UE measures the power level of down link, and according to calculation of parameter initial leading power such as pilot transmit power, uplink interference, first access attempts transmits on this power level, and each access attempts subsequently transmits on the power level than the high specific quantity of previous access attempts, enters step 120 then.
In step 120, UE is provided with the preamble retransmission counter, and the preamble retransmission counter is made as preamble retransmission maximum " Preamble Retrans Max ", and this value can directly obtain from system parameters.Subsequently, enter step 130.
In step 130, UE sends the preamble signature of selecting on access slot, and enters step 140.
In step 140, UE decodes to AICH Acquisition Indication Channel (Acquisition Indicator Channel is called for short " AICH "), and it is leading to check whether the base station has detected.Catch indication (Acquisition Indicator is called for short " AI ") if received rejection, then in following step 150, withdraw from the physical accidental access procedure.If receive and confirm AI, then in step 160 subsequently, send the message part that inserts at random, so the physical accidental access procedure is also so far finished.If do not receive AI, then enter step 170.In step 170, UE reselects available access slot, preamble signature, and leading transmitting power retransmission counter is handled accordingly.Need to prove that the processing here need be with power ascension step-length of leading transmitting power promotion " Power Ramp Step ", and retransmission counter is subtracted 1, withdraw from the physical accidental access procedure, otherwise also need to send new leading if be kept to zero.
In actual applications, there is following problem in such scheme: in the mobile communication system of operation at present, can appear under the overweight situation of system load, continuous access request along with UE, the system load meeting is further risen and is worsened, and mobile communication system can't be to the user of different priorities to treat access with a certain discrimination, thereby cause that high-priority users is the same with general low priority user can't to connect with current cell base station and realize proper communication, influenced the performance of mobile communication system, and strengthened the complaint degree of high-priority users system's operation.
Cause the main cause of this situation to be, overload situations is not considered in access control to mobile communication system in the prior art, just the grade at the user gives corresponding access-in resource, and can't dynamically adjust access-in resource, so can't when overload, guarantee high-grade user's access success rate according to the situation of present load.
Summary of the invention
In view of this, main purpose of the present invention is to provide the connection control method in a kind of mobile communication system, makes under the situation of system overload, guarantees the access success rate of high-priority users, thereby promotes the operation performance of mobile communication system.
For achieving the above object, the invention provides the connection control method in a kind of mobile communication system, comprise following steps:
System dynamics is monitored each cell load, when cell-overload takes place, adjusts influence the system parameters that the user inserts this overloaded cells probability of success, high-grade user's the access probability of success is improved, inferior grade user's access probability of success reduction.
Wherein, described system parameters is the wireless channel access parameter that selective channel will be initiated to insert on the sub-district user will read, and comprises adhering to the scale factor parameter value, dynamically adhering to rank parameter value and access-in resource parameter.
When cell-overload took place, the step of described system parameters adjustment comprised following substep:
What increase high-grade user adheres to the scale factor parameter value, and that reduces high-grade user dynamically adheres to the rank parameter value, increases high-grade user's access-in resource;
What reduce the inferior grade user adheres to the scale factor parameter value, and that improves the inferior grade user dynamically adheres to the rank parameter value, reduces inferior grade user's access-in resource.
When the generation cell load is low, adjust influencing the system parameters that the user inserts this overloaded cells probability of success, the access probability of success the inferior grade user is not higher than under high-grade user's the access probability of success prerequisite, inferior grade user's the access probability of success is improved, and high-grade user's the access probability of success reduces.
The step of described system parameters adjustment comprises following substep when the generation cell load is low:
The scale factor parameter value of adhering to high-grade user is lower than adhering under the scale factor parameter value prerequisite of inferior grade user, and what increase high-grade user adheres to the scale factor parameter value, and what reduce the inferior grade user adheres to the scale factor parameter value;
The rank parameter value of dynamically adhering to high-grade user is higher than adhering under the scale factor parameter value prerequisite of inferior grade user, and that reduces high-grade user dynamically adheres to the rank parameter value, and what reduce the inferior grade user adheres to the scale factor parameter value;
Under high-grade user's the access-in resource prerequisite of access-in resource more than the inferior grade user, increase high-grade user's access-in resource, reduce inferior grade user's access-in resource.
Described access-in resource parameter comprises the preamble signature of the access slot and the access-in resource of access-in resource.
The step that described system dynamics is monitored each cell load further comprises following substep:
Described system sends the instruction of measuring each cell load index;
The corresponding described instruction of systematic survey module responds reports measure the loading condition of described each sub-district by the requirement of this instruction after.
By relatively finding that the main distinction of technical scheme of the present invention and prior art is whether prior art not taking into account system transships, just guarantee that by distribution high-grade user can insert at faster speed to access-in resource.And the present invention at first monitors the system overload situation, when overload takes place, by distributing more resources, guarantee high-grade user's access success rate for the inferior grade user distributes less resources for high-grade user.
Difference on this technical scheme, brought comparatively significantly beneficial effect, be that the present invention passes through to implement a kind of effective connection control method in mobile communication system, make and occur under the situation of overload in system, access control during the implementation system overload, and by system message Adjustment System parameter, solved the further problem that strengthens of the system overload that occurs in the prior art on the one hand, avoided the degree of depth of system overload to worsen, can limit even refuse the access request of low priority user on the other hand again effectively, and do not have influence on the access request of high-priority users as far as possible, thereby can realize the differentiated service of mobile communication system, guarantee the successful access rate of high-priority users all the time different priority users.
Description of drawings
Fig. 1 is the schematic flow sheet that process user equipment inserts at random in the prior art;
Fig. 2 is the schematic flow sheet of realization connection control method according to an embodiment of the invention;
Fig. 3 is the schematic flow sheet that system parameters control is adjusted in the connection control method according to an embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Generally speaking, the present invention is by being implemented in access phase control user's access in mobile communication system, realized under the situation of system overload, can avoid system load further to rise, and can realize the differentiated service of mobile communication system simultaneously different priority users.
Specifically, the present invention is by the monitoring of system to cell load, and come the Adjustment System parameter value according to the system load situation, make low priority user distribute less resources to be used to insert the sub-district even forbid that low priority user inserts, and guarantee that high-priority users can be assigned to more resources and be used to insert the sub-district, thereby realized under the situation of system overload, avoided the further rising of system overload problem, and can guarantee again simultaneously the access success rate of high-priority users to have realized the differentiated service of mobile communication system to different priority users.
Fig. 2 shows the idiographic flow of realizing connection control method in the mobile communication system according to an embodiment of the invention.
At first, in step 200, mobile communication system is sent the instruction of measuring each cell load index, thereby the function of start-up system monitoring cell load, by can grasp the latest development of system load so in real time to the monitoring of cell load, for system implementation effectively is provided by the information timely that provides that inserts.Subsequently, enter step 210.
In step 210, corresponding measurement module by the loading condition of each sub-district in the specific requirement Measurement Network of instruction, and reports concrete loading condition in the system after receiving instruction.By such processing, just can understand system's operation situation in real time, and can make the abnormal conditions that overload appears in certain sub-district in the network and to control timely and effectively and to handle so that system can in time grasp the present load information of each sub-district.Next, enter step 220.
In step 220, system writes down the current loading condition in each sub-district at network side, and enters step 240 after receiving each the cell load index parameter that reports.
In step 240, according to the loading condition in the mobile communication system, and need insert the pairing subscriber equipment of this community user (User Equipment, abbreviation " UE ") access service grade (AccessService Class, be called for short " ASC "), by the Adjustment System parameter, realize the effective control of different priority users in the connecting system stage has been ensured the stability of system's operation when realizing differentiated service.Need to prove that UE described here promptly is meant all kinds of fixing or portable terminals with access mobile communication system, as mobile phone, notebook etc.
Need to prove,, then should adjust the system parameter values of this sub-district rightly if cell load surpasses predefined overload threshold.The system parameters of the network side configuration of need adjusting comprises adheres to scale factor parameter value " Persistence scaling factor ", dynamically adheres to rank parameter value " Dynamicpersistence level " and access-in resource parameter.Wherein, adhere to scale factor parameter value " Persistencescaling factor " and adhere to that dynamically rank parameter value " Dynamic persistence level " is meant that the control user initiates the parameter of when access access probability size on wireless channel; And the access-in resource parameter is meant that initiation inserts the resource that can utilize, and it comprises the preamble signature " Preamble signature " of the access slot " Access slot " and the access-in resource of access-in resource.By adjusting these system parameterss, make mobile communication system can control effectively accordingly according to the situation of current system load when the connecting system to the user of different priorities, for example when system load occurring when too high, can be adjusted into low priority user by above-mentioned system parameters and distribute less access-in resource, reduce its access probability under present case, and can guarantee the successful access rate of high-priority users effectively.Need to prove that also the system parameters that will adjust can be not limited to above-described Several Parameters, as long as can reach the access probability that reduces the low priority user access probability, guarantees high-priority users.
So, processing by described scheme above the present invention, as seen can insert the sub-district to influence different priority users by the output system parameter value, reach realization when system overload to the effective control of user at access phase, the problem that load still can further be risen under the overweight situation of having avoided occurring in the prior art of system load, and can realize the differentiated service of mobile communication system simultaneously, when overload, not influence the access of high-end user as far as possible different priority users.
Specifically describe the detailed process that the system parameters control in the connection control method of one embodiment of the present of invention is adjusted in conjunction with Fig. 3 more below.
At first in step 300, whether system detects the current area load too high, this obtains by current area loading condition and predefined system overload thresholding are made comparisons, if the current area load surpasses this overload threshold value, show that then system load is too high, so enter the step 310 of first face, otherwise enter step 320.
In step 310, because current area load too high, need reduce pairingly among low ASC user's the UE to adhere to scale factor " Persistence scaling factor ", and that improves low ASC user dynamically adheres to rank " Dynamic persistence level ", reduce available access-in resource among the UE that hangs down ASC user again, i.e. the preamble signature " Preamble signature " of access slot " Access slot " that minimizing is wherein available and available access-in resource.Adjustment to system parameters recited above, just can avoid under the overweight situation of current system load, still can producing the overweight situation of load of further deterioration effectively, make low priority user distribute less resources to be used to insert the sub-district even forbid that low priority user inserts, thereby reduced the access probability of low priority user under the situation of current area load too high, and make high-priority users can distribute more resources to be used to insert the sub-district, guaranteed the access success rate of those high-priority users, realized the differentiated service of mobile communication system flexibly and effectively different priority users.
In step 320, because too high situation does not appear in the current area load, the variation of system parameters should to above-mentioned steps 310 in opposite direction adjust, promptly improve and pairingly among low ASC user's the UE adhere to scale factor " Persistence scaling factor ", that reduces low ASC user dynamically adheres to rank " Dynamic persistence level ", and available access-in resource among the low ASC user's of raising the UE, i.e. the preamble signature " Preamble signature " of access slot " Access slot " that raising is wherein available and available access-in resource.So just make under the situation that transshipping does not appear in the current area load, increase low ASC user's access-in resource as far as possible, thereby make that as far as possible low ASC user can successful connecting system.But what pay particular attention to is, in such cases, the standard of high ASC can not be higher than the standard of low ASC, the preamble signature " Preamble Signature " of adhering to scale factor " Persistence scalingfactor ", access slot " Access slot " and access-in resource that is high ASC should be more than or equal to the relevant parameter of low ASC, and the rank " Dynamicpersistence level " of dynamically adhering to of high ASC should be less than or equal to the relevant parameter of low ASC.Because, only in this way could still keep the differentiation of mobile communication system to high ASC user and low ASC user service, make high ASC user can remain the access service of enjoying higher priority than general low ASC user, avoid appearing at the priority that the user who occurs original high ASC after the Adjustment System parameter has lost connecting system on the contrary.
By recited above system occur overload and not under two kinds of situations of overload respectively to the adjustment of system parameters, make system under the different loads situation, the subscriber access system of control different priorities.When a cell load occurs when too high, the present invention improves low ASC user's access standard by the Adjustment System parameter, the low ASC user's of restriction access.Realized effectively that on the one hand mobile communication system can avoid appearing at the problem that load further worsens under the overload situations, ensured the stability of mobile communication system operation, can keep the differentiated service of mobile communication system on the other hand again to different priority users, guarantee the access of high-priority users as far as possible, can guarantee the access success rate of high-priority users all the time.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (7)
1. the connection control method in the mobile communication system is characterized in that, comprises following steps:
System dynamics is monitored each cell load, when cell-overload takes place, adjusts influence the system parameters that the user inserts this overloaded cells probability of success, high-grade user's the access probability of success is improved, inferior grade user's access probability of success reduction.
2. the connection control method in the mobile communication system according to claim 1, it is characterized in that, described system parameters is the wireless channel access parameter that selective channel will be initiated to insert on the sub-district user will read, and comprises adhering to the scale factor parameter value, dynamically adhering to rank parameter value and access-in resource parameter.
3. the connection control method in the mobile communication system according to claim 2 is characterized in that, when cell-overload took place, the step of described system parameters adjustment comprised following substep:
What increase high-grade user adheres to the scale factor parameter value, and that reduces high-grade user dynamically adheres to the rank parameter value, increases high-grade user's access-in resource;
What reduce the inferior grade user adheres to the scale factor parameter value, and that improves the inferior grade user dynamically adheres to the rank parameter value, reduces inferior grade user's access-in resource.
4. the connection control method in the mobile communication system according to claim 1 and 2, it is characterized in that, when the generation cell load is low, adjust influencing the system parameters that the user inserts this overloaded cells probability of success, the access probability of success the inferior grade user is not higher than under high-grade user's the access probability of success prerequisite, inferior grade user's the access probability of success is improved, and high-grade user's the access probability of success reduces.
5. the connection control method in the mobile communication system according to claim 4 is characterized in that, the step of described system parameters adjustment comprises following substep when the generation cell load is low:
The scale factor parameter value of adhering to high-grade user is lower than adhering under the scale factor parameter value prerequisite of inferior grade user, and what increase high-grade user adheres to the scale factor parameter value, and what reduce the inferior grade user adheres to the scale factor parameter value;
The rank parameter value of dynamically adhering to high-grade user is higher than adhering under the scale factor parameter value prerequisite of inferior grade user, and that reduces high-grade user dynamically adheres to the rank parameter value, and what reduce the inferior grade user adheres to the scale factor parameter value;
Under high-grade user's the access-in resource prerequisite of access-in resource more than the inferior grade user, increase high-grade user's access-in resource, reduce inferior grade user's access-in resource.
6. the connection control method in the mobile communication system according to claim 2 is characterized in that, described access-in resource parameter comprises the preamble signature of the access slot and the access-in resource of access-in resource.
7. the connection control method in the mobile communication system according to claim 1 is characterized in that, the step that described system dynamics is monitored each cell load further comprises following substep:
Described system sends the instruction of measuring each cell load index;
The corresponding described instruction of systematic survey module responds reports measure the loading condition of described each sub-district by the requirement of this instruction after.
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| CNB2004100796775A CN100411477C (en) | 2004-12-22 | 2004-12-22 | Access control method in mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009052751A1 (en) * | 2007-10-19 | 2009-04-30 | Zte Corporation | A resource and admission control method and a resource and admission control sub-system |
| CN101115304B (en) * | 2006-07-25 | 2012-07-04 | 华为技术有限公司 | Random access method and system |
| CN102802239A (en) * | 2011-05-25 | 2012-11-28 | 中兴通讯股份有限公司 | Method and system for providing access network selection strategy based on network state |
| CN101304602B (en) * | 2007-05-10 | 2013-02-13 | 电信科学技术研究院 | Method and device for adjudging user access |
| CN101159974B (en) * | 2007-11-16 | 2013-05-08 | 中兴通讯股份有限公司 | Access grade control method |
| CN103458452A (en) * | 2012-05-29 | 2013-12-18 | 中兴通讯股份有限公司 | Method and device for adjusting wireless resources |
| CN104221441A (en) * | 2012-03-19 | 2014-12-17 | 高通股份有限公司 | Transmitting indication of access point loading |
| CN105120522A (en) * | 2009-07-30 | 2015-12-02 | 华为技术有限公司 | Random access method and device |
| CN106131969A (en) * | 2006-10-25 | 2016-11-16 | 三星电子株式会社 | The method and apparatus of the Stochastic accessing in execution radio communication |
| CN109548167A (en) * | 2018-12-10 | 2019-03-29 | 京信通信系统（中国）有限公司 | Coverage area self-adapting regulation method, device, computer storage medium and equipment |
| CN112242915A (en) * | 2019-07-19 | 2021-01-19 | 诺基亚通信公司 | Method and device for carrying out overload control on ONU (optical network Unit) equipment |
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| US6735191B1 (en) * | 1998-12-30 | 2004-05-11 | At&T Corp. | Method and apparatus for transporting TDM voice traffic over an ATM network |
| US6775541B2 (en) * | 2001-01-19 | 2004-08-10 | Motorola, Inc. | Method and apparatus for controlling data rates to preserve voice quality in a CDMA system |
| US7042856B2 (en) * | 2001-05-03 | 2006-05-09 | Qualcomm, Incorporation | Method and apparatus for controlling uplink transmissions of a wireless communication system |
| CN100459565C (en) * | 2003-09-16 | 2009-02-04 | Ut斯达康(中国)有限公司 | Method for controlling wireless access based on multiple service priority level in UMTS |
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| CN101115304B (en) * | 2006-07-25 | 2012-07-04 | 华为技术有限公司 | Random access method and system |
| CN106131969A (en) * | 2006-10-25 | 2016-11-16 | 三星电子株式会社 | The method and apparatus of the Stochastic accessing in execution radio communication |
| US11122616B2 (en) | 2006-10-25 | 2021-09-14 | Samsung Electronics Co., Ltd | Method and apparatus for allocating radio resource using random access procedure in a mobile communication system |
| CN106131969B (en) * | 2006-10-25 | 2019-11-29 | 三星电子株式会社 | The method and apparatus for executing the random access in wireless communication |
| US10455615B2 (en) | 2006-10-25 | 2019-10-22 | Samsung Electronics Co., Ltd | Method and apparatus for allocating radio resource using random access procedure in a mobile communication system |
| CN101304602B (en) * | 2007-05-10 | 2013-02-13 | 电信科学技术研究院 | Method and device for adjudging user access |
| WO2009052751A1 (en) * | 2007-10-19 | 2009-04-30 | Zte Corporation | A resource and admission control method and a resource and admission control sub-system |
| CN101159974B (en) * | 2007-11-16 | 2013-05-08 | 中兴通讯股份有限公司 | Access grade control method |
| CN105120522A (en) * | 2009-07-30 | 2015-12-02 | 华为技术有限公司 | Random access method and device |
| WO2012159519A1 (en) * | 2011-05-25 | 2012-11-29 | 中兴通讯股份有限公司 | Method and system for providing access network selection policy based on network status |
| CN102802239A (en) * | 2011-05-25 | 2012-11-28 | 中兴通讯股份有限公司 | Method and system for providing access network selection strategy based on network state |
| CN104221441A (en) * | 2012-03-19 | 2014-12-17 | 高通股份有限公司 | Transmitting indication of access point loading |
| CN104221441B (en) * | 2012-03-19 | 2018-10-12 | 高通股份有限公司 | Transmit the instruction of access point load |
| CN103458452A (en) * | 2012-05-29 | 2013-12-18 | 中兴通讯股份有限公司 | Method and device for adjusting wireless resources |
| CN109548167A (en) * | 2018-12-10 | 2019-03-29 | 京信通信系统（中国）有限公司 | Coverage area self-adapting regulation method, device, computer storage medium and equipment |
| CN109548167B (en) * | 2018-12-10 | 2020-11-10 | 京信通信系统（中国）有限公司 | Coverage range self-adaptive adjusting method and device, computer storage medium and equipment |
| CN112242915A (en) * | 2019-07-19 | 2021-01-19 | 诺基亚通信公司 | Method and device for carrying out overload control on ONU (optical network Unit) equipment |
| CN112242915B (en) * | 2019-07-19 | 2023-12-15 | 诺基亚通信公司 | Method and device for overload control of ONU (optical network Unit) equipment |
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