CN104159254A - Network congestion treatment method and system - Google Patents
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Abstract
The invention provides a network congestion treatment method and system. The method comprises the following steps: acquiring the central processor occupancy rate of a wireless network controller and the user equipment capacity of a forward access channel; according to the central processor occupancy rate and the user equipment capacity, respectively adjusting the dispatching priority and the dispatching proportional factor of a wireless resource control protocol connecting rejection message and a wireless resource control protocol connecting building message. According to the invention, dispatching priority and the dispatching proportional factor of the wireless resource control protocol connecting rejection message are adjusted to enhance the capability of inhibiting a UE access network and immediately reduce the UE access frequentness; the dispatching priority and the dispatching proportional factor of the wireless resource control protocol connecting building message are adjusted to enhance the capability of UE accessed into other networks, immediately branch UE to other system networks and effectively relieve the network congestion problem.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of network congestion processing method and system.
Background technology
Along with the increase that the universal various packet switching services of smart mobile phone are used, network on-line user number and telephone traffic continue to rise, increasing to the demand of Internet resources, and for effectively utilizing Internet resources, various new algorithms are applied to network, solve network congestion problem.
Due to UE (User Equipment, subscriber equipment) access amount is while reaching the congested generation of Internet resources that network maximum carrying capacity causes, UE accesses difficulty, and then cause UE access signaling storm, cause RNC (Radio Network Controller, radio network controller) CPU (Central Processing Unit on board, central processing unit) occupancy lifting, make a big impact to the stability of network, in festivals or holidays or the specific occasion that the crowd is dense, problem highlights more serious.
In existing method, some protocol parameters that control user accesses frequency configure in advance in equipment, and equipment O&M personnel must predict network congestion in advance just may carry out device security guarantee.Again due to RRC CONNECTION REJECT (radio resource control the connects refusal) message of refusal user access and common signal channel FACH (the Forward Access Channel of RRC CONNECTION SETUP (radio resource control is connected foundation) the message Shi community of permission user access, forward access channel) upper transmission, in the time of a large amount of UE access, the heavy congestion of FACH channel causes UE cannot receive that thereby RRC CONNECTION REJECT message cannot shunt, cannot receive RRC CONNECTION SETUP message, cause network to allow the UE of access cannot access network and continue to re-access, (UE cannot receive after RRC CONNECTION SETUP message to occur the generation of signaling congestion phenomenon, UE can continue to attempt access, access can only be on the common signal channel of main carrier (RACH and FACH), the access that makes repeated attempts can cause that RNC main carrier channel is super busy, RNC load increases, because needs send RRC CONNECTION SETUP message informing UE access at FACH, or send RRC CONNECTION REJECT refusal UE access, UE cannot receive after these message access or refuse and be linked into other networks, make repeated attempts, UE sends a large amount of access request message, RNC issues a large amount of RRC CONNECTION SETUP message or RRC CONNECTION REJECT message, cause FACH signaling congestion), cause user awareness phone to transfer to.Existing method can not reduce UE access frequency in time, shunts in time UE to different grid, effectively alleviating network congestion.
Summary of the invention
The invention provides a kind of network congestion processing method and system, must not reduce in time UE access frequency with solution, can not shunt in time UE to different grid, the effectively problem of alleviating network congestion.
In order to address the above problem, the invention discloses a kind of network congestion processing method, comprising:
The Center Processing Unit Utilization of Real-time Obtaining radio network controller and the user equipment capabilities of forward access channel;
According to described Center Processing Unit Utilization and described user equipment capabilities, adjust respectively radio resource control connection refused message and be connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
Preferably, described according to described Center Processing Unit Utilization and described user equipment capabilities, adjust respectively radio resource control connection refused message and be connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control, comprising:
When described Center Processing Unit Utilization is greater than level-overload thresholding, and when described user equipment capabilities is greater than capacity thresholding, improve the transmission priority of described radio resource control connection refused message and send proportionality coefficient, reducing described radio resource control and connect transmission priority and the transmission proportionality coefficient of setting up message;
Wherein, described radio resource control connection refused message comprises redirect message; Described redirect message comprises the cell list information of 2G, 4G or 3G; Described radio resource control connection refused message is connected with described radio resource control to be set up message and is stored in respectively two independently message send queues; Described transmission priority be described two independently the message of message send queue preferentially send rank; Described transmission proportionality coefficient is described two message quantity forwarded ratios of message send queue independently.
Preferably, described method also comprises:
According to described Center Processing Unit Utilization or described user equipment capabilities, reduce the number of times of subscriber equipment access network.
Preferably, described according to described Center Processing Unit Utilization or described user equipment capabilities, the number of times of minimizing subscriber equipment access network, comprising:
The duration that is greater than level-overload thresholding when described Center Processing Unit Utilization is greater than preset time, or when described user equipment capabilities is greater than capacity thresholding, in n top community, upgrade broadcast system information, reduce the number of times of subscriber equipment access network, n is positive integer;
Wherein, the quantity of the radio resource control connection request message in described top community is greater than the quantity of the radio resource control connection request message in other communities of radio network controller; Described broadcast system information comprises maximum number of times of transmission and the synchronous maximum attempts of the uplink synchronous code in uplink pilot time slot in N300, T300, TD SDMA; Described T300 is that subscriber equipment sends after radio resource control connection request message, waits for that radio resource control connects the timer of setting up message; Described N300 is the transmission constant of radio resource control connection request message.
The invention also discloses a kind of network congestion treatment system, comprising:
Acquisition module, for the user equipment capabilities of Center Processing Unit Utilization and the forward access channel of Real-time Obtaining radio network controller;
Adjusting module, for according to described Center Processing Unit Utilization and described user equipment capabilities, adjusts respectively radio resource control connection refused message and is connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
Preferably, described adjusting module is worked as described Center Processing Unit Utilization and is greater than level-overload thresholding, and when described user equipment capabilities is greater than capacity thresholding, improve the transmission priority of described radio resource control connection refused message and send proportionality coefficient, reducing described radio resource control and connect transmission priority and the transmission proportionality coefficient of setting up message;
Wherein, described radio resource control connection refused message comprises redirect message; Described redirect message comprises the cell list information of 2G, 4G or 3G; Described radio resource control connection refused message is connected with described radio resource control to be set up message and is stored in respectively two independently message send queues; Described transmission priority be described two independently the message of message send queue preferentially send rank; Described transmission proportionality coefficient is described two message quantity forwarded ratios of message send queue independently.
Preferably, described system also comprises:
Reduce module, for according to described Center Processing Unit Utilization or described user equipment capabilities, reduce the number of times of subscriber equipment access network.
Preferably, described minimizing module is greater than preset time when the duration that described Center Processing Unit Utilization is greater than level-overload thresholding, or when described user equipment capabilities is greater than capacity thresholding, in n top community, upgrade broadcast system information, the number of times that reduces subscriber equipment access network, n is positive integer;
Wherein, the quantity of the radio resource control connection request message in described top community is greater than the quantity of the radio resource control connection request message in other communities of radio network controller; Described broadcast system information comprises maximum number of times of transmission and the synchronous maximum attempts of the uplink synchronous code in uplink pilot time slot in N300, T300, TD SDMA; Described T300 is that subscriber equipment sends after radio resource control connection request message, waits for that radio resource control connects the timer of setting up message; Described N300 is the transmission constant of radio resource control connection request message.
Compared with background technology, the present invention includes following advantage:
By the CPU usage of Real-time Obtaining RNC and the UE capacity of FACH, for the situation of the UE capacity of the CPU usage situation of real-time RNC and real-time FACH, radio resource control connection refused message be can adjust respectively and transmission priority and the transmission proportionality coefficient of setting up message, co-treatment network congestion problem are connected with radio resource control.In technical scheme of the present invention, adjust the transmission priority of radio resource control connection refused message and send proportionality coefficient, can strengthen stoping the ability of UE access network, can reduce in time UE access frequency; Adjust radio resource control and connect and sets up the transmission priority of message and sends proportionality coefficient, can strengthen UE and be linked into the ability of other networks, shunt in time UE to other system network, the problem of effective alleviating network congestion.
Brief description of the drawings
Fig. 1 is the process flow diagram of UE access network;
Fig. 2 is a kind of network congestion processing method flow chart in the embodiment of the present invention;
Fig. 3 is another kind of network congestion processing method flow chart in the embodiment of the present invention;
Fig. 4 is a kind of network congestion treatment system structure chart in the embodiment of the present invention;
Fig. 5 is another kind of network congestion treatment system structure chart in the embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The process of UE Network with Random Multiple Access System may be summarized to be following several step, and the process flow diagram of UE access network as shown in Figure 1.
A SYNC_UL (uplink synchronous code in TD SDMA in uplink pilot time slot of the random selection of step 1:UE, there are 8 SYNC_UL each community) be sent to NodeB (base station), estimation sends required power and the Timing Advance of RRC Connection Request (radio resource control connection request) message.NodeB detects the SYNC_UL that UE sends, and sends RRC Connection Request power demand and Timing Advance in FPACH (Fast Physical Access Channel, physical access channel) loopback.
Step 2:UE is according to the power of NodeB loopback and Timing Advance, at RACH (Random Access Channel, Random Access Channel) or the upper RRC CONNECTION REQUEST message that sends of PRACH (Physical Random Access Channel, Physical Random Access Channel) to RNC.If RNC allows UE access, on FACH, send RRC CONNECTION SETUP message to UE.If RNC does not allow UE access, above send RRC CONNECTION REJECT message to UE at FACH or SCCPCH (Secondary Common Control Physical Channel, Secondary Common Control Physical Channel).
In above-mentioned steps 2, be also included in carrying on CELL_DCH (cell private channel) and set up the process of synchronization, be that RNC sends RADIO LINK SETUP REQUEST (wireless link request) message to NodeB, NodeB returns to RADIO LINK SETUP RESPONSE (wireless link response) message to RNC.
Step 3:UE returns to RRC CONNECTION SETUP COMPLETE (radio resource control connection has been set up) message to RNC on DCCH (Dedicated Control Channel, Dedicated Control Channel).After RNC receives, represent that UE accesses successfully.
Because UE access is frequent, in step 1 stage, UE may collide conflict while selection at random in 8 SYNC_UL, UE can repeat to select SYNC_UL, and the transmitted power of RRC Connection Request message and the conflict of transmitting time can continue to strengthen, the maximum times MaxSYNCUL and the synchronous maximum attempts M that send SYNC_UL in TS25.224, are defined
maxthe broadcast in system information SIB5 (Neighboring Cell List frequently) of these two parameters, this stage, RNC network cannot be added up UE due to not access network of UE, but user awareness cannot be made a phone call (voice) and cannot initiate data service online.In step 2 stage, due to RACH, FACH channel access limited ability, the UE number accessing within the unit interval is too much, FACH can be congested, cause a large amount of UE to can not receive RRC CONNECTION SETUP message and again send RRC CONNECTION REQUEST message, in TS25.331 agreement, specify that (UE sends after RRC CONNECTION REQUEST message UE at T300, wait for the startup timer of RRC CONNECTION SETUP message) after, cannot receive after RRC CONNECTION SETUP message, repeat to send RRC CONNECTION REQUEST message N300 time.T300 and N300 broadcast in system information SIB1 (comprising network access server information and the UE timer sum counter under idle pulley and connection mode).This type of UE repeats access operation and causes that signaling spreads unchecked, and control channel is completely congested, and RNC equipment is tired in processing a large amount of signalings accesses, consumes a large amount of cpu resources.Congested in step 2 stage, RNC can add up the number of times of RRC CONNECTION REQUEST message the cycle, obtains access signaling load condition, judges that whether FACH is congested.Due to descending transmission RRC CONNECTION SETUP message and CELL UPDATE CONFIRM (cell update confirmation) message employing UM (interface between base station and travelling carriage) pattern, on FACH, there is no SS (Synchronization Shift) and TPC (Transmit Power Control), therefore, can not carry out closed-loop power control and synchronous, reliability is low, the RRC CONNECTION SETUP message that can configure RNC equipment repeats transmission times increase UE and receives probability, may more aggravate FACH congested.For ensureing network insertion capacity, RNC can open bis-accesses of FACH and little speed UE resides in FACH state, and this type of function further causes FACH channel congestion.FACH channel congestion, UE cannot receive and carries the RRC CONNECTION REJECT message of redirection information and continue access network, causes congested aggravation.Therefore, technical solution of the present invention solves in the time that network load is higher, occurs when congested at FACH channel, shunts as early as possible UE to other networks and reduces UE access network frequency, ensures the problem of network security.
Introduce in detail a kind of network congestion processing method provided by the invention and system below by enumerating several specific embodiments.
Embodiment mono-
Introduce in detail a kind of network congestion processing method that the embodiment of the present invention provides.
With reference to Fig. 2, show a kind of network congestion processing method flow chart in the embodiment of the present invention.
Step 100, the Center Processing Unit Utilization of Real-time Obtaining radio network controller and the user equipment capabilities of forward access channel.
Except can carrying out according to above-mentioned steps 100, described step 100 can also be: the UE capacity of the CPU usage of Real-time Obtaining RNC or FACH.
In the present embodiment, select the mode of the CPU usage of Real-time Obtaining RNC and the UE capacity of FACH to process network congestion.But in the time of practical operation, can select the wherein one in above-mentioned two situations to carry out according to actual conditions.
Step 102, according to described Center Processing Unit Utilization and described user equipment capabilities, adjusts respectively radio resource control connection refused message and is connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
According to the UE capacity of the CPU usage of the RNC of Real-time Obtaining in above-mentioned steps 100 and FACH, adjust the transmission priority of radio resource control connection refused message and send proportionality coefficient, and adjusting radio resource control connection and set up the transmission priority of message and send proportionality coefficient.
Specifically can be by improving the transmission priority of described radio resource control connection refused message and sending proportionality coefficient, reduce described radio resource control and connect the transmission priority of setting up message and the mode that sends proportionality coefficient, solve the problem of network congestion.
In sum, the embodiment of the present invention is by the CPU usage of Real-time Obtaining RNC and the UE capacity of FACH, for the situation of the UE capacity of the CPU usage situation of real-time RNC and real-time FACH, radio resource control connection refused message be can adjust respectively and transmission priority and the transmission proportionality coefficient of setting up message, co-treatment network congestion problem are connected with radio resource control.In technical scheme of the present invention, adjust the transmission priority of radio resource control connection refused message and send proportionality coefficient, can strengthen stoping the ability of UE access network, can reduce in time UE access frequency; Adjust radio resource control and connect and sets up the transmission priority of message and sends proportionality coefficient, can strengthen UE and be linked into the ability of other networks, shunt in time UE to other system network, the problem of effective alleviating network congestion.
Embodiment bis-
Introduce in detail a kind of network congestion processing method that the embodiment of the present invention provides.
With reference to Fig. 3, show a kind of network congestion processing method flow chart in the embodiment of the present invention.
Step 200, the Center Processing Unit Utilization of Real-time Obtaining radio network controller and/or the user equipment capabilities of forward access channel.
Described step 200 can comprise following situations:
One, the UE capacity of the CPU usage of Real-time Obtaining RNC or FACH.
Two, the UE capacity of the CPU usage of Real-time Obtaining RNC and FACH.
In the time of practical operation, can select the wherein one in above-mentioned two situations to carry out according to actual conditions.
Described CPU usage can be not only the percentage size of CPU, can also comprise the duration that maintains certain percentage.
For example, the CPU usage of RNC is 40%, and the duration is 8 seconds.
Step 202, according to described Center Processing Unit Utilization and/or described user equipment capabilities, processes network congestion.
Preferably, described step 202 can be divided into following two kinds of situations to be carried out, and in following two kinds of situations, selects any one all can realize the processing of the embodiment of the present invention to network congestion.
Step 2021, according to described Center Processing Unit Utilization and described user equipment capabilities, adjusts respectively radio resource control connection refused message and is connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
Preferably, described step 2021 can be:
When described Center Processing Unit Utilization is greater than level-overload thresholding, and when described user equipment capabilities is greater than capacity thresholding, improve the transmission priority of described radio resource control connection refused message and send proportionality coefficient, reducing described radio resource control and connect transmission priority and the transmission proportionality coefficient of setting up message.
Wherein, described radio resource control connection refused message can comprise redirect message; Described redirect message can comprise the cell list information of 2G, 4G or 3G; Described radio resource control connection refused message is connected with described radio resource control to be set up message and is stored in respectively two independently message send queues; Described transmission priority be described two independently the message of message send queue preferentially send rank; Described transmission proportionality coefficient is described two message quantity forwarded ratios of message send queue independently.
For example, described level-overload thresholding can be set to 75%, can arrange according to actual conditions, and described capacity thresholding is 10/second, also can arrange according to actual conditions.When CPU usage is 80%, UE capacity while being 12/ second, can improve the transmission priority of RRC CONNECTION REJECT message and send proportionality coefficient, reduce the transmission priority of RRC CONNECTION SETUP message and send proportionality coefficient.As the transmission priority of RRC CONNECTION REJECT message under normal circumstances with send proportionality coefficient all with the transmission priority of RRC CONNECTION SETUP message with to send proportionality coefficient identical, be now adjusted into the transmission priority of RRC CONNECTION REJECT message and send proportionality coefficient all higher than transmission priority and the transmission proportionality coefficient of RRC CONNECTION SETUP message.
Step 2022, according to described Center Processing Unit Utilization or described user equipment capabilities, reduces the number of times of subscriber equipment access network.
Preferably, described step 2022 can be:
The duration that is greater than level-overload thresholding when described Center Processing Unit Utilization is greater than preset time, or when described user equipment capabilities is greater than capacity thresholding, in n top community, upgrade broadcast system information, reduce the number of times of subscriber equipment access network, n is positive integer.
Wherein, the quantity of the radio resource control connection request message in described top community is greater than the quantity of the radio resource control connection request message in other communities of radio network controller; Described broadcast system information comprises maximum number of times of transmission and the synchronous maximum attempts of the uplink synchronous code in uplink pilot time slot in N300, T300, TD SDMA; Described T300 is that subscriber equipment sends after radio resource control connection request message, waits for that radio resource control connects the timer of setting up message; Described N300 is the transmission constant of radio resource control connection request message.
For example, described level-overload thresholding can be set to 75%, can arrange according to actual conditions, described preset time can be set to 15 seconds, can arrange according to actual conditions, described capacity thresholding is 10/second, also can arrange according to actual conditions.Top community can be that the number of top community also can arrange according to actual conditions according to the maximum community of RRC CONNECTION REQUEST message transmission times of RNC statistics.In described broadcast system message, can be set to 0 by N300, T300 is set to maximum 8 seconds, maximum times MaxSYNCUL and synchronous maximum attempts Mmax are all set to 1, upgrade broadcast system information and can notify UE not repeat access, the collision probability of UE while reducing FACH channel and random access.
Meanwhile, the repetition transmission times that RNC can also arrange RRC CONNECTION SETUP message and CELL UPDATE CONFIRM message is 0, takies for reducing FACH.In CPU usage, lower than a certain overload level and continue to recover normal parameter configuration when certain a period of time, a certain overload level herein and certain a period of time also can arrange according to actual conditions.
About the calculating of UE capacity, can calculate according to the configuring condition of the common signal channel of following formula and community corresponding to UE the UE capacity of FACH.PICH (Paging Indicator Channel, Page Indication Channel) piece is by N
pICHindividual successive frame composition, paging repetition period PBP (Paging Block Periodicity), protection interval N
gAP, the Transmission Time Interval TTI of FACH channel
fach.Not multiplexing at PICH and FACH, but PICH and SCCPCH be when multiplexing, and within a PBP cycle, FACH sends (PBP-N at most
pICH-N
gAPa) × 10ms message, multiplexing at PICH and FACH, but PICH and SCCPCH be not when multiplexing, N
gAPand N
pICHbe 0.The time accounting of FACH channel occupancy physical channel SCCPCH is (PBP-N
pICH-N
gAP)/PBP.
It should be noted that: PICH and SCCPCH are physical layer parameters, but PICH and SCCPCH represent to use identical code channel information when multiplexing, these two physical channels are to send data simultaneously, because FACH is carried on SCCPCH, therefore at PICH and SCCPCH when multiplexing, within a PBP cycle, it is to take at most (PBP-N that FACH sends message
pICH-N
gAP) × 10ms duration.
Multiplexing at PCH and FACH, but PICH and SCCPCH be not when multiplexing (using different physical code channels), N
pICHand N
gAPbe 0, represent that both do not use identical physical resources, can send data simultaneously.
The upper transmission of FACH RRC CONNECTION SETUP message or RRC CONNECTION REJECT message, these message have certain length, are expressed as Len
msg.Transmission channel agreement regulation FACH has TTI (Transmission Time InterVal, Transmission Time Interval) and TB (the Transprot Block that can transmit in a TTI, transmission block) number and size (TBSize), TB size and number composition TF (Transport Format, transformat), therefore, can be according to the TF of the message size that will send on FACH and FACH, just can calculate the time that this message needs that sends.
The transformat of FACH carrier signaling is expressed as TF
fach_Sig, message-length is expressed as Len
msg, the TTI number that sending signaling needs is: TF
fach_Sig/ Len
msg.Therefore the number of calls that, FACH supported in 1 second is: β=(1000 × (PBP-N
pICH-N
gAP)/PBP)/((Len
msg/ TF
fach_Sig) × TF
fach_Sig).
According to this formula, RNC can arrive the frequency by community statistical unit time signaling on FACH channel, calculates signaling frequency β.
Formula is explained: 1000 represent 1 second, (PBP-N
pICH-N
gAP)/PBP represents the ratio of FACH holding time on physical channel SCCPCH, and it is Len that the part of back is illustrated in the upper transmission of FACH length
msgmessage need time.
So, what formula finally calculated is: the number that can send the message that transmission length is Len in 1 second on FACH, be exactly the number that RRC CONNECTION REJECT or RRC CONNECTION SETUP message can send in 1 second, the request number of manageable access user equipment in 1 second.
Illustrate: configure at canonical parameter (RACH transformat TF=1*170, TTI is 10ms, FACH TF=2*171, FACH TTI is 20ms, N
pICH=2, N
gAP=4, PBP=60ms) time, after RRC CONNECTION REQUEST message coding, be approximately 170bit, transmission approximately needs 10ms, after RRC CONNECTION SETUP message coding, be approximately 8*171bit, need 4*20=80ms, due to PCH and FACH code division multiplexing SCCPCH and be all positioned at time slot 0 with PICH, the duration ratio of FACH channel occupancy transmission channel is (580/640)=0.90625.Therefore, the number of users of the upper support per second of FACH is: (1000 × 0.90625)/80=11.The upper access user number of RACH (1000 × 1)/10=100.RACH channel capacity is greater than FACH channel capacity.Therefore,, according to the relativity of λ and β, in the time that UE accesses in real time, whether the FACH channel that can judge each community there is signaling congestion, then carries out subscriber equipment Access Control Policy in conjunction with CPU usage.Be and promote the refusal UE access RRC CONNECTION REJECT message UE that carries redirection information and successfully receive probability and the multiple RRC of sending CONNECTION REJECT message, in the time that CPU is greater than certain rank and the unit interval receive when RRC CONNECTION REQUEST message is greater than FACH capacity thresholding, priority relationship and transmission ratio that RRC CONNECTION REJECT message and RRC CONNECTION SETUP message send are set, in the time of network heavy congestion, carry the priority increase corresponding to transmission ratio of the RRC CONNECTION REJECT message of redirection information, be convenient to UE in time and high probability receive and carry GSM (Global System for Mobile communication, global system for mobile communications) or LTE (Long Term Evolution, Long Term Evolution) adjacent area RRC CONNECTION REJECT message and be diverted to other networks, reduce RNC machine utilization.
When specific implementation, in the time of network normal duty, the message send queue of a first in first out of each cell maintenance, RRC CONNECTION REJECT message and RRC CONNECTION SETUP message send in order on FACH by entering sequencing in a queue.In the time of network excess load and user access when frequent, increase the message send queue of a first in first out to community, RRC CONNECTION SETUP message enters the first queue, RRC CONNECTION REJECT enters the second queue.According to CPU overload rank, configure transmission ratio and the priority of message in two queues, select the preferential message sending according to ratio, when ensureing some UE access network, increase UE reception as far as possible and carry the refuse information of redirection information, thereby be diverted to other system network, realize the soft landing of RNC machine utilization, make again subscriber equipment access in time other system network as far as possible, ensure user awareness.
In the embodiment of the present invention, because UE access frequently causes CPU usage higher than certain thresholding, or UE capacity approaches FACH thresholding, and after continuing for some time, in RNC, top community can be upgraded broadcast system information in batches, and notice UE access network number of times, reduces UE access network frequency, reduce network load, prevent in advance UE frequently to access.Lower than certain introduction thresholding and after continuing for some time, the state before can automatically recovering.Because UE access frequently causes CPU usage higher than certain thresholding of geting started, or UE capacity approaches FACH thresholding, and after continuing for some time, RNC can the upper message retransmission number of times of Lookup protocol FACH be 0.Lower than certain introduction thresholding, and after continuing for some time, the state before automatically recovering.
While approaching FACH capacity thresholding according to CPU usage and UE capacity, adjust the transmission priority of RRC CONNECTION REJECT message and RRC CONNECTION SETUP message and send proportionality coefficient, ensure the preferential RRC CONNECTION REJECT message of carrying redirection information that sends, be convenient to UE access and be diverted to GSM network or LTE network, reduce the frequency of UE access RNC.Because FACH capacity thresholding control signal access frequency can carry out separately for community, also can be in the time that the CPU usage of RNC be high, even if do not reach the FACH access thresholding of each community, also can access frequency by priority scheduling RRC CONNECTION REJECT message control UE, shunt in time UE to other networks.
In sum, the embodiment of the present invention, by the CPU usage of Real-time Obtaining RNC and/or the UE capacity of FACH, according to the UE capacity of the CPU usage of RNC and/or FACH, is processed network congestion problem.For the CPU usage situation of real-time RNC, can process network congestion problem; Or for the situation of the UE capacity of real-time FACH, also can process network congestion problem; Simultaneously for the situation of the UE capacity of the CPU usage situation of real-time RNC and real-time FACH, can co-treatment network congestion problem.Technical scheme of the present invention provides two kinds of conditions of processing network congestion, and two kinds of conditions can be used separately, also can be combined with, and can reduce in time UE access frequency, shunts in time UE to other system network, effectively the problem of alleviating network congestion.
In the time of large traffic scene, in the time of the frequent access network of UE, by the broadcast system information notice UE access frequency that upgrades in time, reduce CPU Continued probability, ensure the stability of RNC equipment.
The RRC CONNECTION REJECT message that redirection information is carried in preferential guarantee occurs to UE, increases the UE probability of acceptance, is convenient to UE and is diverted in time other networks, reduces network load, ensures the stability of RNC equipment.
Embodiment tri-
Introduce in detail a kind of network congestion treatment system that the embodiment of the present invention provides.
With reference to Fig. 4, show a kind of network congestion treatment system structure chart in the embodiment of the present invention.
Described system can comprise: acquisition module 300, and, adjusting module 302.
Introduce in detail respectively the relation between function and each module of each module below.
Acquisition module 300, for the user equipment capabilities of Center Processing Unit Utilization and/or the forward access channel of Real-time Obtaining radio network controller.
Adjusting module 302, for according to described Center Processing Unit Utilization and described user equipment capabilities, adjusts respectively radio resource control connection refused message and is connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
In sum, the embodiment of the present invention is by the CPU usage of Real-time Obtaining RNC and the UE capacity of FACH, for the situation of the UE capacity of the CPU usage situation of real-time RNC and real-time FACH, radio resource control connection refused message be can adjust respectively and transmission priority and the transmission proportionality coefficient of setting up message, co-treatment network congestion problem are connected with radio resource control.In technical scheme of the present invention, adjust the transmission priority of radio resource control connection refused message and send proportionality coefficient, can strengthen stoping the ability of UE access network, can reduce in time UE access frequency; Adjust radio resource control and connect and sets up the transmission priority of message and sends proportionality coefficient, can strengthen UE and be linked into the ability of other networks, shunt in time UE to other system network, the problem of effective alleviating network congestion.
Embodiment tetra-
Introduce in detail a kind of network congestion treatment system that the embodiment of the present invention provides.
With reference to Fig. 5, show a kind of network congestion treatment system structure chart in the embodiment of the present invention.
Described system can comprise: acquisition module 400, and adjusting module 402, and, reduce module 404.
Introduce in detail respectively the relation between function and each module of each module below.
Acquisition module 400, for the user equipment capabilities of Center Processing Unit Utilization and the forward access channel of Real-time Obtaining radio network controller.
Adjusting module 402, for according to described Center Processing Unit Utilization and described user equipment capabilities, adjusts respectively radio resource control connection refused message and is connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
Preferably, described adjusting module 402 can be worked as described Center Processing Unit Utilization and is greater than level-overload thresholding, and when described user equipment capabilities is greater than capacity thresholding, improve the transmission priority of described radio resource control connection refused message and send proportionality coefficient, reducing described radio resource control and connect transmission priority and the transmission proportionality coefficient of setting up message.
Wherein, described radio resource control connection refused message can comprise redirect message; Described redirect message comprises the cell list information of 2G, 4G or 3G; Described radio resource control connection refused message is connected with described radio resource control to be set up message and is stored in respectively two independently message send queues; Described transmission priority be described two independently the message of message send queue preferentially send rank; Described transmission proportionality coefficient is described two message quantity forwarded ratios of message send queue independently.
Described minimizing module 404, for according to described Center Processing Unit Utilization or described user equipment capabilities, reduces the number of times of subscriber equipment access network.
Preferably, described minimizing module 404 can be worked as the duration that described Center Processing Unit Utilization is greater than level-overload thresholding and be greater than preset time, or when described user equipment capabilities is greater than capacity thresholding, in n top community, upgrade broadcast system information, the number of times that reduces subscriber equipment access network, n is positive integer.
Wherein, the quantity of the radio resource control connection request message in described top community is greater than the quantity of the radio resource control connection request message in other communities of radio network controller; Described broadcast system information comprises maximum number of times of transmission and the synchronous maximum attempts of the uplink synchronous code in uplink pilot time slot in N300, T300, TD SDMA; Described T300 is that subscriber equipment sends after radio resource control connection request message, waits for that radio resource control connects the timer of setting up message; Described N300 is the transmission constant of radio resource control connection request message.
In sum, the embodiment of the present invention, by the CPU usage of Real-time Obtaining RNC and/or the UE capacity of FACH, according to the UE capacity of the CPU usage of RNC and/or FACH, is processed network congestion problem.For the CPU usage situation of real-time RNC, can process network congestion problem; Or for the situation of the UE capacity of real-time FACH, also can process network congestion problem; Simultaneously for the situation of the UE capacity of the CPU usage situation of real-time RNC and real-time FACH, can co-treatment network congestion problem.Technical scheme of the present invention provides two kinds of conditions of processing network congestion, and two kinds of conditions can be used separately, also can be combined with, and can reduce in time UE access frequency, shunts in time UE to other system network, effectively the problem of alleviating network congestion.
For system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
A kind of network congestion processing method and the system that above the embodiment of the present invention are provided, be described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (8)
1. a network congestion processing method, is characterized in that, comprising:
The Center Processing Unit Utilization of Real-time Obtaining radio network controller and the user equipment capabilities of forward access channel;
According to described Center Processing Unit Utilization and described user equipment capabilities, adjust respectively radio resource control connection refused message and be connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
2. method according to claim 1, it is characterized in that, described according to described Center Processing Unit Utilization and described user equipment capabilities, adjust respectively radio resource control connection refused message and be connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control, comprising:
When described Center Processing Unit Utilization is greater than level-overload thresholding, and when described user equipment capabilities is greater than capacity thresholding, improve the transmission priority of described radio resource control connection refused message and send proportionality coefficient, reducing described radio resource control and connect transmission priority and the transmission proportionality coefficient of setting up message;
Wherein, described radio resource control connection refused message comprises redirect message; Described redirect message comprises the cell list information of 2G, 4G or 3G; Described radio resource control connection refused message is connected with described radio resource control to be set up message and is stored in respectively two independently message send queues; Described transmission priority be described two independently the message of message send queue preferentially send rank; Described transmission proportionality coefficient is described two message quantity forwarded ratios of message send queue independently.
3. method according to claim 1, is characterized in that, described method also comprises:
According to described Center Processing Unit Utilization or described user equipment capabilities, reduce the number of times of subscriber equipment access network.
4. method according to claim 3, is characterized in that, described according to described Center Processing Unit Utilization or described user equipment capabilities, reduces the number of times of subscriber equipment access network, comprising:
The duration that is greater than level-overload thresholding when described Center Processing Unit Utilization is greater than preset time, or when described user equipment capabilities is greater than capacity thresholding, in n top community, upgrade broadcast system information, reduce the number of times of subscriber equipment access network, n is positive integer;
Wherein, the quantity of the radio resource control connection request message in described top community is greater than the quantity of the radio resource control connection request message in other communities of radio network controller; Described broadcast system information comprises maximum number of times of transmission and the synchronous maximum attempts of the uplink synchronous code in uplink pilot time slot in N300, T300, TD SDMA; Described T300 is that subscriber equipment sends after radio resource control connection request message, waits for that radio resource control connects the timer of setting up message; Described N300 is the transmission constant of radio resource control connection request message.
5. a network congestion treatment system, is characterized in that, comprising:
Acquisition module, for the user equipment capabilities of Center Processing Unit Utilization and the forward access channel of Real-time Obtaining radio network controller;
Adjusting module, for according to described Center Processing Unit Utilization and described user equipment capabilities, adjusts respectively radio resource control connection refused message and is connected transmission priority and the transmission proportionality coefficient of setting up message with radio resource control.
6. system according to claim 5, it is characterized in that, described adjusting module is worked as described Center Processing Unit Utilization and is greater than level-overload thresholding, and when described user equipment capabilities is greater than capacity thresholding, improve the transmission priority of described radio resource control connection refused message and send proportionality coefficient, reducing described radio resource control and connect transmission priority and the transmission proportionality coefficient of setting up message;
Wherein, described radio resource control connection refused message comprises redirect message; Described redirect message comprises the cell list information of 2G, 4G or 3G; Described radio resource control connection refused message is connected with described radio resource control to be set up message and is stored in respectively two independently message send queues; Described transmission priority be described two independently the message of message send queue preferentially send rank; Described transmission proportionality coefficient is described two message quantity forwarded ratios of message send queue independently.
7. system according to claim 5, is characterized in that, described system also comprises:
Reduce module, for according to described Center Processing Unit Utilization or described user equipment capabilities, reduce the number of times of subscriber equipment access network.
8. system according to claim 7, it is characterized in that, described minimizing module is greater than preset time when the duration that described Center Processing Unit Utilization is greater than level-overload thresholding, or when described user equipment capabilities is greater than capacity thresholding, in n top community, upgrade broadcast system information, the number of times that reduces subscriber equipment access network, n is positive integer;
Wherein, the quantity of the radio resource control connection request message in described top community is greater than the quantity of the radio resource control connection request message in other communities of radio network controller; Described broadcast system information comprises maximum number of times of transmission and the synchronous maximum attempts of the uplink synchronous code in uplink pilot time slot in N300, T300, TD SDMA; Described T300 is that subscriber equipment sends after radio resource control connection request message, waits for that radio resource control connects the timer of setting up message; Described N300 is the transmission constant of radio resource control connection request message.
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