Embodiment
In the embodiment of the present invention, network side sends network congestion information to user's side when generation is congested.Subscriber equipment when determining to need initiating random access procedure, judges whether the network congestion information of receiving that network side sends, if receive network congestion information, subscriber equipment suspends initiating random access procedure, otherwise the subscriber equipment initiating random access procedure.The initiating random access procedure that subscriber equipment can be not blindly like this and emphasis network congested, reach the purpose of alleviating network congestion.Particularly for the equipment of this enormous amount of MTC equipment, if all subscriber equipmenies are all carried out this scheme, the effect of alleviating network congestion will be very obvious.
In the present embodiment, network side occurs that congested may to be that access network equipment (as base station or radio network controller (RNC) etc.) occurs congested, may be also that equipment of the core network (as Mobility Management Entity (MME) etc.) occurs congested.The congested reason of network equipment generation has multiple, as hardware excess load or data volume or customer volume overload etc.Any reason causes network equipment that the congested the present embodiment that all is applicable to occurs.
Referring to Fig. 1, in the present embodiment, the method flow of transport network congestion information is as follows:
Step 101: it is congested that network side determines that network occurs.
Step 102: network side sends network congestion information to subscriber equipment.
Network equipment to subscriber equipment transmission network congestion information in the present embodiment is access network equipment, access network equipment can determine self to occur when congested to send network congestion information to subscriber equipment, is perhaps knowing that equipment of the core network occurs when congested to send network congestion information to subscriber equipment.Network congestion information includes but not limited to: do not allow the information that accesses, access probability information, access grade prohibition information (Access controlbarring, ACB) and keep out of the way one or more in information (backoff).
Network side has multiple specific implementation while sending network congestion information.From the transmission channel angle, network side utilizes the congested sign of public network by Physical Downlink Control Channel (PDCCH) scheduling, and then upper to subscriber equipment transmission network congestion information at Physical Downlink Shared Channel (PDSCH).Perhaps, the network side utilization sends network congestion information by Physical Broadcast Channel (PBCH) to subscriber equipment, especially by the management information piece (MIB) on PBCH, to subscriber equipment, sends network congestion information.Perhaps, network side utilizes the congested sign of public network by High-Speed Shared Control Channel (HS-SCCH) scheduling, and then upper to subscriber equipment transmission network congestion information at high speed descending sharing channel (HS-DSCH).Perhaps, pilot channel (PICH) calling user device is passed through in the network side utilization, and then upper to subscriber equipment transmission network congestion information at physical control channel (PCCH).Perhaps, network side passes through System information block (SIB) to subscriber equipment radio network congestion information.
From the message angle of beared information, network side is controlled (RRC) signaling by medium cut-in control grouping data unit (MACPDU) message or Radio Resource and is sent network congestion information to subscriber equipment.Concrete, the RRC signaling comprises paging (paging) signaling, System information block (SIB) or other RRC signaling that newly increases etc.MAC PDU message comprises MAC CE (media Access Layer control unit) message etc.
From the angle of continuous transmission network congestion information, network side periodically sends network congestion information.Perhaps, network side sends network congestion information according to default maximum time interval.
When the congestion state of network side is eliminated, stop sending network congestion information.
After network side sent network congestion information, it is congested that subscriber equipment can know accordingly that just network side occurs, and then suspend initiating random access procedure.Below the implementation procedure of user equipment side access control is introduced.
Referring to Fig. 2, the main method flow process of access control in the present embodiment is as follows:
Step 201: subscriber equipment need to determine initiating random access procedure.Subscriber equipment can be in the triggering that is subject to some business or network environment, need to determine initiating random access procedure.
Step 202: subscriber equipment judges whether the network congestion information of receiving that network side sends,, if receive network congestion information, continues step 203, otherwise continues step 204.
Step 203: subscriber equipment suspends initiating random access procedure.
Step 204: subscriber equipment initiating random access procedure.
Subscriber equipment can perhaps first obtain network congestion information determining and need obtaining network congestion information after initiating random access procedure, then need to determine initiating random access procedure.That is, subscriber equipment is determined to need to monitor network congestion information after initiating random access procedure.Perhaps, subscriber equipment is monitored network congestion information before determining to need initiating random access procedure.The maximum duration that subscriber equipment is monitored is not less than network side and sends the cycle of network congestion information.Perhaps, the maximum duration of subscriber equipment monitoring is not less than default maximum time interval.Wherein, cycle and maximum time interval can be the pre-configured subscriber equipmenies of giving, and also can network side by broadcast, notify to subscriber equipment.
Subscriber equipment can be controlled the duration of monitoring by timer.As, when subscriber equipment is monitored network congestion information, start timer, if receive network congestion information before timer expiry, subscriber equipment stops timer, and suspends initiating random access procedure, if timer expiry, subscriber equipment initiating random access procedure; Wherein the overtime duration of timer is the maximum duration of described monitoring.
From the transmission channel angle, subscriber equipment utilizes the congested Physical Downlink Control Channel (PDCCH) that is identified at of public network to go up addressing, and then according to addressing results, at Physical Downlink Shared Channel (PDSCH), upward monitors network congestion information.Perhaps, subscriber equipment, in the upper network congestion information of monitoring of Physical Broadcast Channel (PBCH), is especially monitored network congestion information by the management information piece (MIB) on PBCH.Perhaps, subscriber equipment utilizes the congested High-Speed Shared Control Channel (HS-SCCH) that is identified at of public network to go up addressing, and then according to addressing results, at high speed descending sharing channel (HS-DSCH), upward monitors network congestion information.Perhaps, subscriber equipment is paging receiving message on PICH, and then according to beep-page message, monitor network congestion information on PCCH.Perhaps, subscriber equipment is by the network congestion information of System information block listening broadcast.The congested sign of described public network comprises the H-RNTI (Radio Network Temporary Identifier of high speed shared channels) of P-RNTI (Radio Network Temporary Identifier of paging), preset value, the RNTI (Radio Network Temporary Identifier) of preset value or the international mobile subscriber identifier (IMSI) of preset value.For example, the H-RNTI of preset value is FFFF (16 system), and the RNTI of preset value is FFFD (16 system).The congested sign of public network corresponding one or one group of subscriber equipment (being a plurality of subscriber equipmenies) or all subscriber equipmenies.
From the message angle of beared information, subscriber equipment is monitored the network congestion information of being controlled (RRC) signaling bear by medium cut-in control grouping data unit (MAC PDU) message or Radio Resource.Concrete, the RRC signaling is paging (paging) signaling or System information block (SIB) etc.MAC PDU message is MAC CE (media Access Layer control unit) message etc.
When subscriber equipment is received network congestion information, can determine at once to suspend initiating random access procedure, perhaps, judge whether to meet the indicated access conditions of network congestion information; If do not meet, subscriber equipment suspends initiating random access procedure, otherwise the subscriber equipment initiating random access procedure.
Network congestion information comprises: do not allow the information that accesses, access probability information, access grade prohibition information ACB and keep out of the way one or more in information backoff.Network congestion information can also comprise that other is used to control the indication information of subscriber equipment access, does not enumerate herein.
When network congestion information comprises while not allowing the information that accesses, subscriber equipment determines not meet the indicated access conditions of network congestion information, suspends initiating random access procedure.
When network congestion information comprises access probability information, subscriber equipment generates random number, and judge whether random number is not more than the indicated probable value of access probability information, if, determine to meet the indicated access conditions of network congestion information, otherwise determine not meet the indicated access conditions of network congestion information.For example, the scope of probable value is 0~1, and when network side was not congested, the indicated probable value of access probability information was 0.8, and this moment, most of subscriber equipmenies can access.When network side was congested, the indicated probable value of access probability information was 0.1, and the random number that subscriber equipment generates, greater than 0.1, is determined not meet the indicated access conditions of network congestion information, otherwise determined to meet the indicated access conditions of network congestion information.
When network congestion information comprises the access grade prohibition information, whether the access grade of subscriber equipment judgment device or the access grade of current business are the indicated access grade of access grade prohibition information, if, determine not meet the indicated access conditions of network congestion information, otherwise determine to meet the indicated access conditions of network congestion information.For example, the scope of access grade is 0~15, and the access grade of domestic consumer's equipment is a grade in 0~9, and grade 10 is used for urgent call, the corresponding particular service of grade 11~15.When network side was not congested, the indicated access grade of access grade prohibition information comprised grade 9, and this moment, most of subscriber equipmenies can access.When network side was congested, the indicated access grade of access grade prohibition information comprised 0,1,2,3,5 and 7,9, for most users equipment, did not all meet the indicated access conditions of network congestion information.
When network congestion information comprises while keeping out of the way information, subscriber equipment determines not meet the indicated access conditions of network congestion information, and when the indicated duration of information is kept out of the way in wait, again judges whether the network congestion information of receiving that network side sends.For example, subscriber equipment receives while keeping out of the way information, suspends initiating random access procedure, and starts and keep out of the way timer corresponding to information, again judges whether the network congestion information of receiving that network side sends when timer expiry.Wherein, the overtime duration of this timer is to keep out of the way the indicated duration of information.
When comprising, network congestion information keeps out of the way information, while reaching at least one that does not allow in the information that accesses, access probability information and access grade prohibition information, subscriber equipment is not when allowing at least one in the information that accesses, access probability information and access grade prohibition information to determine not meet the indicated access conditions of network congestion information, after the indicated duration of information is kept out of the way in wait, again judge whether the network congestion information of receiving that network side sends.This mode is with the combination of multiple network congestion information, makes subscriber equipment after suspending initiating random access procedure, can be by the wait of a period of time, and the initiating random access procedure of again having an opportunity, needn't wait until the triggering of next trigger condition.
Hence one can see that, and whether initiating random access procedure has multiple implementation to subscriber equipment,, below by two exemplary embodiments, with Process flow, introduces in detail implementation procedure.
, referring to Fig. 3, control by access probability information the method flow that accesses in the present embodiment as follows:
Step 301: subscriber equipment need to determine initiating random access procedure.
Step 302: subscriber equipment starts first timer.
Step 303: subscriber equipment utilizes the congested Physical Downlink Control Channel (PDCCH) that is identified at of public network to go up addressing.This step can be synchronizeed and carry out with step 302.
Step 304: subscriber equipment is upward monitored network congestion information according to addressing results at Physical Downlink Shared Channel (PDSCH).
, if listen to network congestion information before timer expiry, continue step 305, otherwise continue step 308.
Step 305: subscriber equipment is by the RRC signaling monitoring to network congestion information, and to identify network congestion information be access probability information.
Step 306: subscriber equipment generates random number.
Step 307: subscriber equipment judges whether random number is not more than the indicated probable value of access probability information, if continue step 308, otherwise continue step 309.
Step 308: subscriber equipment initiating random access procedure.
Step 309: subscriber equipment is initiating random access procedure not.
Referring to Fig. 4, as follows with the method flow of keeping out of the way information control access by the access grade prohibition information in the present embodiment:
Step 401: subscriber equipment need to determine initiating random access procedure.
Step 402: subscriber equipment starts first timer.
Step 403: subscriber equipment utilizes the congested High-Speed Shared Control Channel (HS-SCCH) that is identified at of public network to go up addressing.This step can be synchronizeed and carry out with step 402.
Step 404: subscriber equipment is upward monitored network congestion information according to addressing results at high speed descending sharing channel (HS-DSCH).
, if listen to network congestion information before timer expiry, continue step 405, otherwise continue step 407.
Step 405: subscriber equipment listens to network congestion information by MAC PDU, and identifies network congestion information and comprise ACB and keep out of the way information.
Step 406: whether the access grade of subscriber equipment judgment device or the access grade of current business are not the indicated access grade of access grade prohibition information, if continue step 407, otherwise continue step 408.
Step 407: subscriber equipment initiating random access procedure.
Step 408: subscriber equipment is initiating random access procedure not, and second timer corresponding to information kept out of the way in startup.
Step 409: second timer is overtime, continues step 403.
Understood by above description the implementation procedure that network side transport network congestion information and user's side joint enter to control, below internal structure and the function of network equipment and subscriber equipment have been introduced.
Referring to Fig. 5, in the present embodiment, subscriber equipment comprises: trigger module 501, control module 502 and interface module 503.
Trigger module 501 is used for need determining initiating random access procedure.
Control module 502 is used for judging whether the network congestion information of receiving that network side sends.
If interface module 503 is used for receiving network congestion information, suspend initiating random access procedure, otherwise initiating random access procedure.
Interface module 503 is monitored network congestion information after also being used for determining to need initiating random access procedure; Before perhaps determining to need initiating random access procedure, monitor network congestion information.The maximum duration that interface module 503 is monitored is not less than network side and sends the cycle of network congestion information; Perhaps, the maximum duration of monitoring is not less than default maximum time interval.
When interface module 503 is monitored network congestion information, also be used for starting the timer 504 of subscriber equipment, if receive network congestion information before timer 504 is overtime, interface module 503 stops timer, and time-out initiating random access procedure, if timer 504 is overtime, interface module 503 initiating random access procedures; Wherein the overtime duration of timer 504 is the maximum duration of described monitoring.
From the transmission channel angle, interface module 503 utilizes the congested Physical Downlink Control Channel (PDCCH) that is identified at of public network to go up addressing, and then according to addressing results, at Physical Downlink Shared Channel (PDSCH), upward monitors network congestion information.Perhaps, interface module 503 is in the upper network congestion information of monitoring of Physical Broadcast Channel (PBCH).Perhaps, interface module 503 utilizes the congested High-Speed Shared Control Channel (HS-SCCH) that is identified at of public network to go up addressing, and then according to addressing results, at high speed descending sharing channel (HS-DSCH), upward monitors network congestion information.Perhaps, interface module 503 is paging receiving message on PICH, and then according to beep-page message, monitor network congestion information on PCCH.Perhaps, interface module 503 is by the network congestion information of System information block listening broadcast.The congested sign of described public network comprises the H-RNTI of P-RNTI, preset value, the RNTI of preset value or the international mobile subscriber identifier (IMSI) of preset value.The corresponding subscriber equipment of the congested sign of public network or one group of subscriber equipment or all subscriber equipmenies.
From the message angle of beared information, the network congestion information that interface module 503 is monitored by medium cut-in control grouping data unit (MAC PDU) message or radio resource control RRC signaling bear.
When interface module 503 was received network congestion information, control module 502 also was used for judging whether to meet the indicated access conditions of network congestion information.If do not meet, interface module 503 is suspended initiating random access procedure, otherwise interface module 503 initiating random access procedures.
Network congestion information comprises: do not allow the information that accesses, access probability information, access grade prohibition information ACB and keep out of the way one or more in information backoff.
When network congestion information comprises while not allowing the information that accesses, control module 502 determines not meet the indicated access conditions of network congestion information.
When network congestion information comprises access probability information, control module 502 generates random number, and judge whether random number is not more than the indicated probable value of access probability information, if, determine to meet the indicated access conditions of network congestion information, otherwise determine not meet the indicated access conditions of network congestion information.
When network congestion information comprises the access grade prohibition information, whether the access grade of control module 502 judgment device or the access grade of current business are the indicated access grade of access grade prohibition information, if, determine not meet the indicated access conditions of network congestion information, otherwise determine to meet the indicated access conditions of network congestion information.
When network congestion information comprises while keeping out of the way information, control module 502 determines not meet the indicated access conditions of network congestion information, and when the indicated duration of information is kept out of the way in wait, again judges whether the network congestion information of receiving that network side sends.Concrete, when control module 502 determines not meet the indicated access conditions of network congestion information, start and keep out of the way timer corresponding to information 505, when timer 505 is overtime, again judge whether the network congestion information of receiving that network side sends.
When comprising, network congestion information keeps out of the way information, while reaching at least one that does not allow in the information that accesses, access probability information and access grade prohibition information, control module 502 is not when allowing in the information that accesses, access probability information and access grade prohibition information at least one to determine not meet the indicated access conditions of network congestion information, after the indicated duration of information is kept out of the way in wait, again judge whether the network congestion information of receiving that network side sends.
Referring to Fig. 6, the device that is used for transport network congestion information in the present embodiment comprises: control module 601 and interface module 602.This device can be the evolution base station (eNB) in Long Term Evolution (LTE) system, or the RNC in UMTS (universal mobile telecommunications system) system.The mutual Node B (base station) of passing through between RNC and subscriber equipment realizes.
It is congested that control module 601 is used for determining that network occurs.
Interface module 602 is used for sending network congestion information to subscriber equipment.
Network congestion information includes but not limited to: do not allow the information that accesses, access probability information, access grade prohibition information ACB and keep out of the way one or more in information backoff.
From the transmission channel angle, interface module 602 utilizes the congested sign of public network to dispatch by physical downlink control channel PDCCH, and then sends network congestion information to subscriber equipment on PDSCH.Perhaps, interface module 602 is utilized and is sent network congestion information by PBCH to subscriber equipment.Perhaps, interface module 602 utilizes the congested sign of public network to dispatch by high-speed shared control channel HS-SCCH, and then sends network congestion information to subscriber equipment on HS-DSCH.Perhaps, interface module 602 is utilized by the PICH calling user device, and then sends network congestion information to subscriber equipment on PCCH.Perhaps, interface module 602 by System information block to subscriber equipment radio network congestion information.
From the message angle of beared information, interface module 602 sends network congestion information by MAC PDU message or RRC signaling to subscriber equipment.The RRC signaling is paging signaling or SIB.MAC PDU message is MAC CE message.
Interface module 602 periodically sends network congestion information; Perhaps, send network congestion information according to default maximum time interval.
In the embodiment of the present invention, network side sends network congestion information to user's side when generation is congested.Subscriber equipment when determining to need initiating random access procedure, judges whether the network congestion information of receiving that network side sends, if receive network congestion information, subscriber equipment suspends initiating random access procedure, otherwise the subscriber equipment initiating random access procedure.The initiating random access procedure that subscriber equipment can be not blindly like this and emphasis network congested, reach the purpose of alleviating network congestion.Particularly for the equipment of this enormous amount of MTC equipment, if all subscriber equipmenies are all carried out this scheme, the effect of alleviating network congestion will be very obvious.The embodiment of the present invention can be passed through multiple channel and multiple signaling transmission network congestion information, and can transmit continuously, periodic transfer, or be no more than the maximum time interval transmission.Transmission means is versatile and flexible, so that it is congested that user's device learns network side is occurred.And in the embodiment of the present invention, network congestion information can comprise access probability information or keep out of the way information etc., realizes in several ways different subscriber equipmenies being carried out the access control of different modes, reaches the purpose of effective alleviating network congestion.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect fully.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.
The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step to produce computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction of carrying out on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.