CN102238752A

CN102238752A - Random access control method of machine type communication (MTC) equipment and MTC equipment

Info

Publication number: CN102238752A
Application number: CN2010101651105A
Authority: CN
Inventors: 赵毅; 房家奕; 张英
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2011-11-09
Anticipated expiration: 2030-04-30
Also published as: CN102238752B

Abstract

The invention discloses a random access control method of machine type communication (MTC) equipment and the MTC equipment, and is used for solving the problem caused by random access of multiple pieces of MTC equipment in the current network. The method comprises the following steps of: acquiring relevant parameters of a random access load by monitoring a channel which is used for transmitting a random access response message to other user equipment by a network side; determining the random access load according to the acquired relevant parameters; and controlling random access according to a comparison result between the determined random access load and a set load. In the MTC equipment, the random access is controlled by judging the random access load of the network, the congestion caused by simultaneously accessing multiple MTC terminals to the network can be avoided, the influence of the MTC equipment access on the traditional mobile terminal access is reduced, and the change on the action of network-side equipment is simultaneously reduced.

Description

A kind of MTC equipment random access control method and MTC equipment

Technical field

The present invention relates to communication technical field, relate in particular to a kind of MTC (Machine Type communication, MachineType Communications) random access control method and MTC equipment.

Background technology

3-G (Generation Three mobile communication system) with and long evolving system in need to support MTC (Machine Type communication, Machine Type Communications) function.MTC is as a kind of novel communication theory, its objective is that the communication technology with number of different types organically combines, as: machine is to machine communication, machine control communication, man-machine interaction communication, mobile interconnected communication, thus the development of promotion social production and life style.The business of estimating following Human To Human's communication may only account for 1/3 of whole terminal market, and the communication of bigger quantity is the MTC communication service.Sometimes, MTC communication is called machinery compartment (Machine-to-machine, M2M) communication or Internet of Things again.

Some characteristics that the current MTC communication of recognizing may exist have: MTC equipment has Hypomobility; The time that MTC equipment and network side carry out transfer of data is controlled; The transfer of data that MTC network and network side carry out is less demanding to real-time to transfer of data, has the time tolerance that is:; The MTC plant capacity is limited, requires extremely low power consumption; Only carry out the message transmission of small data quantity between MTC equipment and the network side; MTC equipment can be that unit manages with the group; The MTC equipment of a reality can have above-mentioned one or more characteristics.

UE needs to initiate random access procedure and sets up uplink synchronous in order to send upstream data.Be given in the random access procedure in UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) system and LTE (Long Term Evolution, the Long Term Evolution) system below.

(1) random access procedure in the UMTS system

To TD-SCDMA (Time Division Synchronized Code Division Multiple Access, TD SDMA) system, as shown in Figure 1, the basic procedure of random access procedure comprises:

Step S101, UE sends the request that inserts at random to network side;

When UE initiates random access procedure, select a uplink synchronous code SYNC_UL at first at random, send the request of access at random that comprises this SYNC_UL at ascending pilot frequency physical channel UpPCH channel then;

Step S102, UE receives the accidental access response that network side returns;

UE will begin to wait for receiving random access response at rapid physical Acquisition Indicator Channel FPACH that the longest stand-by period is notified by system broadcasts after sending and inserting request at random from next subframe.

Each sub-district can dispose a plurality of FPACH, and physical resources such as the shared time slot of FPACH, code channel are notified UE by system broadcasts, and the FPACH that UE should monitor determines according to formula (1):

FPACH(i)＝SYNC_UL(j)mod?N (j＝1，2，...，8)

Wherein, FPACH (i) represents the FPACH channel number that UE should monitor; The numbering of SYNC_UL (j) expression UE selected cell uplink synchronous code when uplink pilot time slot UpPTS time slot sends; N is the FPACH channel number of Serving cell configuration.

Step S103, UE sends up signaling or resource request according to the accidental access response that receives;

After UE adjusts its transmitted power and Timing Advance according to the relevant information of carrying in the accidental access response, send up signaling or resource request at selected PRACH (Physical Random Access Channel, Physical Random Access Channel) or enhanced uplink random access channel E-RUCCH.

Step S104, UE go up at FACH (Forward Access Channel, forward access channel) and receive data message or the schedule information that network side returns;

For TDD (Time Division Duplex, time division duplex) UMTS system,, need not to monitor the FPACH channel if UE does not send the request of access at random that comprises SYNC_UL; If send the request that inserts at random without any UE, also can not send any data on the FPACH channel.

For the WCDMA system, the basic ideas of random access procedure and TD-SCDMA system class are seemingly, also need UE to send the request of access at random that comprises lead code preamble earlier, on AICH Acquisition Indication Channel AICH, receive the access response message that network side returns, on PRACH, send up signaling or resource request etc. according to the accidental access response that receives then.

(2) random access procedure in the LTE system

Insert at random in the LTE system and comprise that competition inserts and non-competing access at random at random.As shown in Figure 2, the competition random process comprises the steps:

Step S201, UE send the request of access at random that comprises lead code preamble to network side;

Network side eNB is responsible for the configuration of available preamble and PRACH resource, and notifies UE by system message with configuration result.UE selects a preamble sign indicating number and sends the request that inserts at random according to setting rule when initiating to insert at random.

Step S202, UE receives the accidental access response that network side returns;

ENB responds the request of access at random that UE sends in the accidental access response window.Accidental access response window length is specified in system message by eNB.Article one, accidental access response message can respond the request of access at random of a plurality of UE.Accidental access response is dispatched by the PDCCH (PhysicalDown Control Channel, Physical Downlink Control Channel) of RA-RNTI scrambling, and RA-RNTI determines by sending the running time-frequency resource position of inserting request at random.

Accidental access response message comprises: the ascending resource of rollback parameter b ackoff, the preamble corresponding with inserting request at random, uplink Timing Advance, distribution, C-RNTI (Radio NetworkTemporary Identifier, CELL Radio Network Temporary Identifier) temporarily.If backoff is used for indicating this access failure at random, the UE time delay average that next time, initiation inserted at random.UE determines to send to the accidental access response of oneself by the sign of the preamble in RA-RNTI and the accidental access response.If UE does not correctly receive accidental access response, then determine to initiate next time the time delay of access at random according to backoff, select the PRACH resource to initiate to insert at random in addition next time.After reaching largest random access number of times, UE MAC course radio resource control RRC layer reports the problem that inserts at random, triggers the Radio Link Failure process.

Step S203, UE utilize the ascending resource that distributes to send uplink information to network side according to the accidental access response that receives.

Step S204, UE receives the downlink information corresponding with described uplink information that network side returns.

Non-competing access at random can be used for switching and downlink data arrives this two kinds of scenes, for indicate the access of initiating at random on the regulation resource according to eNB.As shown in Figure 3, may further comprise the steps:

Step S301, UE receive the indication of access at random that network side issues;

Insert indication at random and carry preamble and the PRACH resource (can be one or more) that UE initiates the non-competing use of access at random.For handoff scenario, eNB initiates non-competing access at random by RRC signaling UE; Arrive scene for downlink data, eNB initiates non-competing access at random by PDCCH order notice UE.

Step S302, UE ask with specifying the preamble sign indicating number to initiate access at random on the PRACH of eNB appointment resource;

If specified a plurality of PRACH resources, UE selects a PRACH resource to send the request that inserts at random in first available subframe that the PRACH resource is arranged at random.

Step S303, UE receives the accidental access response that network side returns;

ENB responds UE after receiving and inserting request at random.Insert at random for non-competing, think to compete to solve in this step and finish.The format and content of accidental access response inserts the same with competition at random.Article one, accidental access response can respond the request of access at random that a plurality of UE send.

Current mobile communications network is at interpersonal design of communication, as determining etc. of: network capacity.The MTC number of devices is very huge, may reach tens times of existing portable terminal quantity, will cause network congestion when these MTC equipment are all concentrating on when initiating random access procedure in a period of time section.If MTC equipment is treated as common mobile terminal, adopt existing access grade (AccessClass) controlling mechanism that the behavior of access at random of MTC equipment is controlled, because the MTC number of devices is huge, therefore can the access of existing portable terminal be impacted.If special access control mechanism mode at MTC equipment is set, bigger change will be arranged the behavior of network side and terminal equipment.

Summary of the invention

The embodiment of the invention provides a kind of MTC equipment random access control method and MTC equipment, causes easily that in order to solve existing MTC devices communicating network congestion influences the problem that the mobile subscriber uses.

In the embodiment of the invention, a kind of MTC equipment random access control method is provided, comprising:

Issue the channel of accidental access response message by monitoring network side to other subscriber equipmenies, obtain the relevant parameter of determining to insert at random load;

Determine to insert at random load according to the described relevant parameter that obtains;

According to the determined comparative result that inserts load and assumed load at random, carry out access control at random.

In another embodiment of the present invention, a kind of MTC equipment is provided, comprising:

The relevant parameter acquiring unit is used for issuing the channel of accidental access response message by monitoring network side to other subscriber equipmenies, obtains the relevant parameter of determining to insert at random load;

Insert the load determining unit at random, be used for determining to insert at random load according to the described relevant parameter that obtains;

The access control unit is used for carrying out access control at random according to the determined comparative result of loading with assumed load that inserts at random at random.

Utilize MTC equipment random access control method provided by the invention and MTC equipment, have following beneficial effect: can MTC equipment be determined initiate to insert at random by the load intensity of access at random of judging network, can avoid a large amount of MTC terminals simultaneously access networks cause congested, reduce MTC equipment and insert the influence that existing portable terminal is inserted, simultaneously, reducing to network equipment behavior changes.

Description of drawings

Fig. 1 is a random access procedure flow chart in the UMTS system;

Fig. 2 is a competition random access procedure flow chart in the LTE system;

Fig. 3 is a non-competing random access procedure flow chart in the LTE system;

Fig. 4 is according to MTC equipment accidental access method flow chart in the invention process 1;

Fig. 5 is according to MTC equipment accidental access method flow chart in the invention process 2;

Fig. 6 is according to MTC equipment accidental access method flow chart in the invention process 3;

Fig. 7 is according to MTC equipment structure chart in the embodiment of the invention;

Fig. 8 is a MTC equipment structure chart in the UMTS system in the embodiment of the invention;

Fig. 9 is a MTC equipment structure chart in the LTE system in the embodiment of the invention.

Embodiment

Below in conjunction with drawings and Examples, MTC equipment random access control method and MTC equipment that the present invention is proposed illustrate in greater detail.

Because in the MTC communication system, there is certain difference in the urgency level of the urgency level of MTC device data transmission and the transmission of existing person to person's communication data, as: the data that MTC equipment sends are reporting of non-emergent data such as water consumption, can initiate so to insert when the network insertion load is low weight.In view of current characteristics and the above-mentioned characteristic of MTC equipment of inserting at random, the present invention proposes a kind of MTC equipment random access control method.Determine to initiate to insert at random by the intensity that inserts load at random of determining network, carry out access control at random, can avoid a large amount of MTC terminals simultaneously access networks cause congested, reduce MTC equipment and insert the influence that existing portable terminal is inserted, simultaneously, reducing to network equipment behavior changes.

Embodiment 1

In the embodiment of the invention 1, a kind of MTC equipment random access control method is provided, as shown in Figure 4, comprising:

Step S401 issues the channel of accidental access response message by monitoring network side to other subscriber equipmenies, obtains the relevant parameter of determining to insert at random load;

According to existing random access procedure, no matter be in UMTS system or LTE system, MTC equipment can be monitored network side issues channel from accidental access response to other subscriber equipmenies as a mobile subscriber equipment UE.And according to the monitoring to channel, can obtain the relevant parameter that is used for determining to insert at random load, these relevant parameters are specially the parameter that inserts load intensity at random that can characterize network, concrete parameter is not limit, the parameter that inserts load intensity at random of levying network in sign is a plurality of, relevant parameter can be the combination of these a plurality of parameters, inserts situation according to different random, can select to obtain different relevant parameters.

Step S402 determines to insert at random load according to the described relevant parameter that obtains;

After obtaining above-mentioned relevant parameter, can determine to insert at random load according to these relevant parameters, thereby can judge whether to satisfy the access burden requirement that initiation inserts at random by detecting the load intensity of access at random of current network.

Step S403 according to the determined comparative result that inserts load and assumed load at random among the step S402, carries out access control at random.

When carrying out access control at random,, can determine whether the current load that inserts at random allows MTC equipment to initiate to insert at random according to the determined comparative result that inserts load and assumed load at random.Preferably, among the step S403, carry out access control at random and specifically comprise in the present embodiment:

Step S4031 according to described comparative result, determines to insert at random load and whether satisfies the access burden requirement, if do not satisfy, execution in step S4032 is if satisfy execution in step S4035 or execution in step S4036.

Step S4032 does not satisfy when inserting burden requirement inserting load at random, determines that current the initiation insert at random; The continuation or first setting-up time of delaying time continue to monitor described channel and obtain described relevant parameter; Delaying time first setting-up time can constant time lag or random delay.

Step S4033 utilizes definite load of access at random and the assumed load of newly obtaining of relevant parameter to compare, and redefines and does not initiate to insert at random.

Whether step S4034 satisfies imposing a condition, if do not satisfy, returns execution in step S4033, if satisfy, then finishes.

Preferably, impose a condition in the present embodiment in following three conditions any:

1) utilizes definite load of access at random and the assumed load of newly obtaining of relevant parameter to compare, satisfy when inserting burden requirement, determine initiation access at random, thereby finish.

2) the described number of times of initiating to insert at random that determines whether reaches set point number, that is: judge when reaching certain number of times inserting load continuously at random, finishing to insert at random load judges, directly initiate to insert at random, or stop this time access attempts at random, thereby finish to the current state of high level indication.

3) need to determine the total time-delay after initiation inserts at random to reach second setting-up time, that is: when determining that after the long period current network load is not suitable for initiating to connect at random, finishing to insert at random load judges, directly initiate to insert at random, or stop this time access attempts at random, thereby finish to the current state of high level indication.

Step S4035, when determine to satisfy inserting burden requirement according to described comparative result, determine the current time or the 3rd setting-up time of delaying time after initiate to insert at random.

When satisfying the access burden requirement, promptly can initiate to insert at random at once, because network has certain stability, initiate after a period of time of also can delaying time to insert at random.The concrete time that postpones can be set within the specific limits at random.

Step S4036, when determine to satisfy inserting burden requirement according to described comparative result, continue or the 4th setting-up time of delaying time after continue to monitor described channel;

Determining to satisfy when inserting burden requirement, is stable in order to determine network in longer a period of time, proceeds channel-monitoring again after a period of time of can proceeding or delay time.

Step S4037 according to the determined comparative result of loading with assumed load that inserts at random of the relevant parameter that newly obtains, determines to satisfy when inserting burden requirement, determines that the current time initiation inserts at random.Certainly, judge whether to satisfy the access burden requirement continuously and can set at least once, be not limited to continuous several times and judge.

During concrete enforcement, insert burden requirement, can adopt load of access at random and the assumed load that to determine to compare, thereby determine whether to satisfy the access burden requirement according to determining whether the access load satisfies at random.Preferably, not satisfying the access burden requirement in the present embodiment is specially: the determined load that inserts at random is greater than assumed load; Or be that the determined load that inserts at random is more than or equal to assumed load; Or be determined load surpasses setting greater than the degree of assumed load the scope that inserts at random.Satisfying the access burden requirement in the present embodiment is specially: the determined load that inserts at random is less than assumed load; Or be that the determined load that inserts at random is smaller or equal to assumed load; Or be determined load is no more than setting greater than the degree of assumed load the scope that inserts at random.Need to prove, divided by on the condition that satisfy not to insert burden requirement that lists and satisfy and insert outside the burden requirement condition, the condition that can also set other certainly is not for satisfying the condition that inserts burden requirement and satisfying the burden requirement condition that inserts.It should be noted that in a concrete execution mode, condition of setting that does not satisfy the access burden requirement and the satisfied burden requirement condition that inserts can not be conflicted mutually, as: when not satisfying the condition that inserts burden requirement is that determined the access at random loaded greater than assumed load, and so corresponding satisfied access burden requirement condition need be made as the determined load that inserts at random smaller or equal to assumed load.

MTC equipment is when determining whether to satisfy the access burden requirement in the present embodiment, and used assumed load obtains in the following manner: the notification message according to network side obtains this assumed load; And/or according to being stored on the MTC equipment or this assumed load of information acquisition among its associated Universal Integrated Circuit Card UICC.Particularly, this described notification message is system broadcast message, beep-page message or signaling message (as NAS signaling, RRC signaling, MAC layer signaling, physical layer signaling etc.).

By the MTC equipment random access control method that the above embodiment of the present invention provided, when determining to need to initiate to insert at random, can carry out the access load of current network and determine.Utilize MTC to select network to insert duty ratio at random lower the time, carry out random access procedure again the less demanding characteristics of real-time.Like this, can avoid a large amount of MTC equipment to initiate to insert at random to cause network congestion, reduce MTC equipment and insert the influence that existing portable terminal is inserted, simultaneously, reduce to network equipment behavior and change, and also do not influence the proper communication of MTC equipment.

Embodiment 2

In embodiments of the invention 2, the MTC equipment that the invention process 1 is provided access control at random is applied to the UMTS system.In the UMTS system, MTC equipment according to the method for embodiment 1, directly carries out access control at random by the load of access at random of judging network when having data need initiate to insert at random.

According to the UMTS system random access process, when UE initiated to comprise the request of access at random of uplink synchronous code SYNC_UL/ uplink synchronous code sign preamble to network side, network side was gone up at rapid physical Acquisition Indicator Channel FPACH (TDD system)/AICH (WCDMA system) and is issued accidental access response message to UE.Therefore, the channel that MTC equipment is monitored in the present embodiment is FPACH (TDD system)/AICH (WCDMA system).Carry out access control at random by the load intensity of access at random that detects the FPACH/AICH channel.As shown in Figure 5, comprise step:

Step S501 when MTC equipment has data to send, selects to carry out FPACH (TDD system)/AICH (WCDMA system) channel-monitoring according to setting rule, obtains the relevant parameter of determining to insert at random load;

Each sub-district can dispose a plurality of FPACH/AICH, physical resources such as the shared time slot of FPACH/AICH, code channel are notified UE by system broadcasts, when disposing a plurality of FPACH/AICH, monitor the channel that network side issues accidental access response message, select part or all of FPACH/AICH channel to monitor by setting rule.

Obtain the relevant parameter that inserts load at random of determining network in the present embodiment, specifically comprise: when listening to the accidental access response message that network side issues on described channel, carry out the number statistics.

Step S502 according to the accidental access response message number that network side in the unit interval issues, determines the load of access at random of network on the FPACH/AICH that monitors.

A period of time T_duration of the unit interval here for setting, at T_duration in the time, the FPACH that UE listens to by judgement (TDD system)/AICH (WCDMA system) channel sends the number (being frequency) of accidental access response message, judges the current load intensity of access at random.

When disposing a plurality of FPACH/AICH, select the FPACH/AICH of monitoring by setting rule in the present embodiment, that is: can monitor one of them FPACH/AICH, also can monitor a plurality of FPACH/AICH wherein; Can also monitor whole FPACH/AICH.Determine to insert the accidental access response message number of load at random, determine the load of access at random of network on each accidental access response channel that selection is monitored, issuing according to network side in the unit interval.Select different FPACH/AICH to monitor, from different perspectives the load of access at random of reflection net.

Step S503 according to the determined comparative result that inserts load and assumed load at random, carries out access control at random.

Judge according to comparative result whether the determined load intensity (the accidental access response message number that issues on the FPACH/AICH that monitors for network side in the unit interval in the present embodiment) that inserts at random satisfies the access burden requirement, concrete determination methods is with embodiment 1, as the comparative result compared with the load intensity of setting for less than/smaller or equal to/greater than and be no more than setting range, determine to satisfy and insert burden requirement; When determine to satisfy inserting burden requirement,, can initiate to insert at random also at once and can postpone a period of time and initiate again to insert at random after (fixed delay or random delay) according to the method for implementing 1; The comparative result of comparing with the load intensity of setting for greater than/more than or equal to/greater than and when being no more than setting range, determine not satisfy and insert burden requirement, current the initiation inserted at random, can continue to monitor FPACH/AICH obtains relevant parameter and inserts load at random and judge, also at interval certain hour (fixed delay or random delay) preferably as behind the 5.12s, continuation monitoring FPACH/AICH obtains relevant parameter and inserts the load judgement at random, to initiate access at random.If can access network, then initiate random access procedure; Otherwise, judge once more.And the like, up to successful access network, perhaps reach the maximum attempts of setting or till the trial time.

In the present embodiment when the accidental access response message number that listens to statistics, determine whether network side issues accidental access response message on the channel of being monitored, in the following ways: whether can detect by activating by judging the information on the FPACH/AICH that is monitored, if detect by activating, illustrate to listen to accidental access response message, otherwise explanation does not listen to; Or whether can decode uplink synchronous code or uplink synchronous code sign on the channel monitored, if can be correctly decoded, illustrate to listen to accidental access response message, otherwise illustrate and do not listen to by judging.

In addition, when definite network side issues accidental access response message on the channel of being monitored, can also decode, obtain uplink synchronous code or uplink synchronous identification code that this accidental access response message comprises the accidental access response message that issues.

When monitoring a plurality of FPACH/AICH channel, if the load intensity of access at random of all FPACH/AICH channels of monitoring has surpassed assumed load, be the load intensity of access at random that MTC equipment allows access, determine that then this MTC equipment current time does not allow to initiate random access procedure; Especially, satisfy the access burden requirement if certain or some the channel FPACH/AICH in the FPACH/AICH channel group of being monitored insert load intensity at random, carry out access control at random in the present embodiment and specifically comprise: obtain and insert the accidental access response channel that load is lower than assumed load at random; Obtain the uplink synchronous code that the accidental access response message of this accidental access response channel is decoded and obtained, or, obtain the uplink synchronous code set of this accidental access response channel correspondence by this accidental access response channel number; The uplink synchronous code that utilizes decoding to determine, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain initiate to insert at random.

Embodiment 3

In embodiments of the invention 3, the MTC equipment that the invention process 1 is provided access control at random is applied to the LTE system.In the LTE system, MTC equipment according to the method that embodiment 1 is provided, directly carries out access control at random by the load of access at random of determining network when having data need initiate to insert at random.

According to the random access procedure of LTE system, network side eNB is responsible for the configuration of available lead code preamble and PRACH resource, and notifies UE by system message with configuration result.No matter be the competition random access procedure, or non-competing random access procedure, after network side receives the lead code preamble of UE transmission, at PDSCH (Physical Downlink Shared Channel, physical down link sharing channel) accidental access response that issues is by PDCCH (the Physical Down ControlChannel of RA-RNTI scrambling, Physical Downlink Control Channel) schedule information is dispatched in, and RA-RNTI determines by sending the PRACH running time-frequency resource position of inserting request at random.Therefore MTC equipment is monitored the PDCCH of the RA-RNTI institute scrambling of PRACH resource correspondence, and the information that can obtain comprises: schedule information among the PDCCH that is monitored; The accidental access response message of dispatching by this schedule information; Information such as lead code in this accidental access response message.As shown in Figure 6, MTC equipment random access control method comprises step in the present embodiment:

Step S601 when MTC equipment has data to send, monitors the PDCCH by the RA-RNTI institute scrambling of setting the selected part or all of PRACH resource correspondence of rule;

During concrete enforcement, determine the configuration of available lead code preamble and PRACH resource in this step according to system broadcast message; Determine the resource identification RA-RNTI of different PRACH resource correspondences according to the configuration of described PRACH resource; When monitoring the PDCCH by the RA-RNTI institute scrambling of setting the selected part or all of PRACH resource correspondence of rule, obtain the accidental access response message that schedule information among the PDCCH that is monitored and described schedule information are dispatched.Selected RA-RNTI can be a RA-RNTI of PRACH resource correspondence, also can select among a plurality of RA-RNTI of available PRACH resource correspondence at least one or all.

Because RA-RNTI is corresponding with the resource that the subscriber equipment transmission inserts request message at random.Therefore monitor the PDCCH of RA-RNTI institute scrambling, can obtain to insert at random in the current network request transmission situation.

When getting access to the schedule information among the described PDCCH that utilizes the scrambling of selected RA-RNTI institute in the present embodiment, obtain relevant parameter and be specially and obtain in the following parameter any or two:

When 1) listening to the described PDCCH that utilizes selected RA-RNTI scrambling, carry out the number statistics; When listening to the described PDCCH that utilizes selected RA-RNTI scrambling, illustrate that network side sends the subscriber equipment that inserts request message (that is: preamble) at random to the PRACH resource of utilizing selected RA-RNTI correspondence and carries out accidental access response, therefore, carry out the number statistics when listening to the described PDCCH that utilizes selected RA-RNTI scrambling, can obtain network side and insert the number that request message carries out accidental access response at random, thereby obtain the information on load that inserts at random to what subscriber equipment utilized that the PRACH resource of selected RA-RNTI correspondence sends.

When 2) getting access to the accidental access response message that the schedule information among the PDCCH that is monitored dispatches, carry out the number statistics of accidental access response message.During schedule information in listening to described PDCCH, can further obtain the accidental access response message that schedule information is dispatched, thereby obtain the random response message number that sends among the PDCCH.

Step S602 determines to insert at random load according to the relevant parameter that obtains among the step S601;

During concrete enforcement, determine the load of access at random of network by following combination arbitrary or dual mode:

1) according to the number of the described PDCCH that utilizes selected RA-RNTI scrambling that is added up in the unit interval.When selecting the described PDCCH of different RA-RNTI scramblings to monitor, can obtain the number of the described PDCCH of different RA-RNTI scramblings.

2) the accidental access response message number of dispatching according to the schedule information among the PDCCH that is added up in the unit interval determines to insert at random load.When selecting the described PDCCH of different RA-RNTI scramblings to monitor, can obtain the number that schedule information is dispatched among the PDCCH of different RA-RNTI institute scrambling.

Step S603 according to the determined comparative result that inserts load and assumed load at random, carries out access control at random.

When judge insert load intensity at random and satisfy the access burden requirement of setting the time, concrete determination methods is with embodiment 1, as when load intensity of judging of access at random and assumed load strength relationship be less than/smaller or equal to/greater than and when being no more than setting range, according to the method for implementing 1, can initiate to insert at random also (fixed delay or the random delay) back that can postpone a period of time at once and insert at random initiating; When the load intensity of judging that inserts does not at random satisfy the access burden requirement of setting, as with the load intensity of setting close be greater than/more than or equal to/greater than and surpass setting range, the described PDCCH that can continue to monitor selected RA-RNTI scrambling obtains relevant parameter and inserts load at random and judge, also certain hour (fixed delay or random delay) at interval, preferably as behind the 5.12s, the described PDCCH that continue to monitor selected RA-RNTI scrambling obtains relevant parameter and inserts load at random and judge, can initiate to insert at random judging whether.Allow access network if insert load intensity at random, then initiate random access procedure; Otherwise, judge once more.And the like, up to successful access network, perhaps reach the maximum attempts of setting or till the trial time.

The load of access at random of determining network in the embodiment of the invention is not limited to aforesaid way, and the various information that can also utilize the described PDCCH that monitors selected RA-RNTI scrambling to obtain adopt other modes to determine the load of access at random of network.Provide several concrete modes below, be not limited thereto certainly:

When step S601 obtains relevant parameter:

When 1) getting access to the accidental access response message that the schedule information among the PDCCH that utilizes the scrambling of selected RA-RNTI institute dispatches, further obtain lead code preamble or lead code preamble sign in the accidental access response message that described schedule information dispatches;

When 2) getting access to lead code in the accidental access response message that described schedule information dispatches or lead code preamble sign, carry out the number statistics to specifying lead code.

If select to monitor is the PDCCH of different RA-RNTI institute scrambling, then can obtain lead code preamble or lead code preamble sign in the accidental access response message that schedule information is dispatched among the PDCCH of different RA-RNTI institute scrambling.Thereby can obtain lead code preamble or lead code preamble sign in the accidental access response message of different PRACH resource correspondences.

Described appointment lead code is one or more, and specifying lead code is one, and actual is that the accidental access response message number that comprises certain lead code is added up; When to specify lead code be a plurality of, actual was that the accidental access response message number that comprises some and/or certain class lead code is added up; Specify lead code also can promptly lead code in all accidental access response messages that get access to be added up for all.

In step S602, determining to insert at random load can be in the following way:

1), determines that selected PRACH goes up the corresponding load of access at random according to the lead code quantity of being obtained in the unit interval;

2), determine to insert at random load according to the number of the appointment lead code of being added up in the unit interval;

3) when being a plurality of, specify lead code breath number in described appointment lead code, determine to insert at random load according to each of being added up in the unit interval;

4) according to the lead code of being added up in unit interval sum or according to the average of determined each the lead code number of different lead codes, determine to insert at random load.

Provide a specific embodiment below, comprising:

(1) when MTC equipment has data to send, (according to system information) determines the PRACH resource that current system can use;

If current available PRACH resource has 2, the index of these two PRACH resources is: { 1,2}, because concrete position of adopting which kind of mode to identify the PRACH resource is not determined in current standard as yet, therefore except form described here, also may adopt other forms, as bit mapping bitmap mode;

(2) determine current each self-corresponding RA-RNTI of available PRACH resource;

Select wherein one or more resources to determine the RA-RNTI that it is corresponding in available PRACH resource, the index of establishing the PRACH resource of current selection is 2.

The method of the RA-RNTI of the definite PRACH resource correspondence that adopts in the current standard is: RA-RNTI=1+t_id+10*f_id

Wherein: t_id is the index (0≤t_id＜10) of first subframe at PRACH place; F_id is PRACH pairing frequency domain index (0≤f_id＜6) in that subframe.

(3) in a period of time, listen to the quantity that inserts preamble at random that comprises in the accidental access response message of the quantity of PDCCH of RA-RNTI scrambling of PRACH resource correspondence of selection and/or RA-RNTI correspondence by judgement and determine the current load intensity of access at random.

At the 50ms that monitors in the time period, the quantity of the preamble index that comprises in the accidental access response message that receives among every 10ms surpasses 20 as MTC equipment.

(4) when the load intensity of determining satisfies the access burden requirement of setting, then initiate to insert at random; Otherwise current the initiation inserted at random.Follow-up can the continuation monitored, and seeks and inserts chance at random.Here, establish MTC equipment access intensity at random of statistics network once more behind 5.12s, whether can access network to judge oneself.And the like, up to successful access network, perhaps reach the maximum attempts of setting or till the trial time.

The judgement of supposing current setting inserts the mode that load intensity do not satisfy the access burden requirement of setting at random: if the quantity of the preamble index that comprises in the accidental access response message that receives among every 10ms surpasses 20, and lasting 50ms, MTC equipment this moment can not access network so.When being judged as can not access network the time, the time of inserting judgement once more at random that MTC equipment allows is 5.12s.

In addition, when judge by the load of the access at random judgment rule of setting can insert at random after, can initiate to insert at random at once and insert at random initiating after also can postponing a period of time; In addition, after judging current can the access at random, can proceed to insert at random intensity and judge, also at interval behind the certain hour, insert intensity more at random and judge, insert at random initiating by the load of the access at random judgment rule of setting.

Embodiment 4

UTRAN and E-UTRAN are that UE is provided with access grade (access class, AC), purpose is to limit some UE in some cases to insert in the sub-district.Broadcast in the system information block that the information that whether allows to insert in the sub-district about the UE of different access grades is broadcasted in the sub-district.

Current access grade in UTRAN and E-UTRAN has 16 grades.Wherein the 0-9 level is given domestic consumer by Random assignment, and grade 10 is used for urgent call and allows control, the business that the 11-15 level is corresponding special.User can corresponding common access grade, the access grade between in addition can also corresponding one or more 11-15, and the access grade of user's correspondence is stored in the USIM/UICC card.

For access grade 10-15, UTRAN has adopted identical indicating mode with E-UTRAN, promptly points out that by explicit mode the UE of corresponding which access grade can initiate to insert.For access grade 0-9, the user that UTRAN is still by showing corresponding which access grade of indication can insert; Come corresponding A C 0-9 user to carry out access control by two parameters among the E-UTRAN, two parameters are: access probability parameter (ac-BarringFactor) and forbid parameter turn-on time (ac-BarringTime).When LTE UE initiated the calling (that is: be not to receive the calling that initiate beep-page message indication back) of an active, UE produced a random number, compares with the random number of generation and the access probability parameter of current system broadcasts then.If the random number that produces is less than the access probability parameter of current system broadcasts, then UE can insert at random; Otherwise UE will forbid can not inserting in the time span of parameter indication turn-on time.

In the embodiment of the invention, when existence was used for the access control information of MTC equipment, the present invention can be used in combination with access control information on the basis of embodiment 1,2 or 3.In the present embodiment, when determining to need to initiate to insert at random, before the described network side of monitoring issues the accidental access response message channel, also comprise:

By the access control message (as: access grade prohibition information) that network side sends, determine whether to satisfy the requirement of setting of access at random;

When MTC equipment had data to send, at first the access control message that sends according to network side judged whether to allow oneself to insert.For the LTE system, can stipulate that the business that just allows MTC equipment to initiate certain type is initiated random access procedure when access probability parameter during greater than a certain threshold value.When the access probability parameter is lower than the setting thresholding, judged again after turn-on time, parameter postponed according to forbidding.For the UMTS system, then whether UE need " be forbidden inserting (barring) " according to access grade corresponding in the system broadcasts and selected whether to initiate access procedure.In addition, can also be according to the customized information of described MTC device storage, whether definite current network state satisfies the requirement of customization.

By access control information, determine to satisfy set access requires at random the time, determine to carry out the monitoring of described channel.

MTC equipment according to flow process described in embodiment 1,2 or 3, determines that the monitoring of carrying out described channel carries out follow-up access control at random under situation about judge to allow inserting according to access control information.

Need to prove, according to inserting at random in the process that load intensity judges whether to insert, can carry out system information and upgrade at MTC.Before MTC equipment was initiated random access procedure, the access control information of carrying in the system information after upgrading became when not allowing MTC equipment to insert, and can regulation continue to handle by flow process described in embodiment 1,2 or 3; Also can finish current basis inserts load intensity at random and judges whether the deterministic process that can insert at random, and judge by access control information again, after access control information allows, judge whether and can insert at random according to inserting load intensity at random again again.

MTC equipment is judged and is inserted load at random according to network and judge also can be set at and allow to carry out simultaneously according to access control information when existing data to send, when the both meets the demands, initiates random access procedure again.According to access control information judge and network insert the process that load judges at random can be separate, identical in the process that inserts the load judgement at random and embodiment 1,2 or 3, repeat no more here.

Embodiment 5

In embodiments of the invention, the MTC equipment that provides a kind of control to insert at random, as shown in Figure 7, this MTC equipment comprises: relevant parameter acquiring unit 701, be used for issuing the channel of accidental access response message to other subscriber equipmenies, obtain the relevant parameter of determining to insert at random load by monitoring network side; Insert load determining unit 702 at random, be used for determining to insert at random load according to the described relevant parameter that obtains; The access control unit 703 at random, are used for carrying out access control at random according to the determined comparative result of loading with assumed load that inserts at random.

Preferably, the access control unit 703 at random, specifically comprise: do not initiate to insert determining unit 7031 at random, be used for determining not satisfy when inserting burden requirement according to described comparative result, determine that the current time do not initiate to insert at random; Subsequent treatment unit 7032 when being used for determining that the current time does not initiate to insert at random, being carried out following steps and is imposed a condition to satisfying: continues or first setting-up time of delaying time continues to monitor described channel and obtain described relevant parameter; Utilize the definite comparative result that inserts load and assumed load at random of relevant parameter that newly obtains, redefining not, initiation inserts at random.During concrete enforcement, described impose a condition in following three conditions any: utilize the load of access at random that the relevant parameter that newly obtains determines and assumed load relatively, satisfy when inserting burden requirement, determine to initiate access at random; The described number of times of initiating to insert at random that determines whether reaches set point number; Total time-delay after determining to need to initiate to insert at random reaches second setting-up time.

Different units is determined in the MTC equipment in the present embodiment satisfy not to insert burden requirement and be: the determined load that inserts at random is greater than assumed load; Or be that the determined load that inserts at random is more than or equal to assumed load; Or be determined load surpasses setting greater than the degree of assumed load the scope that inserts at random.

In addition, described access control at random unit 703 also comprises: first inserts determining unit 7033 at random, when being used for determine to satisfy inserting burden requirement according to described comparative result, determine the current time or the 3rd setting-up time of delaying time after initiate to insert at random.Perhaps, described access control at random unit 703 also comprises: continue monitoring unit 7034, be used for determining to satisfy when inserting burden requirement according to described comparative result, continue or the 4th setting-up time of delaying time after continue to monitor described channel; Second inserts determining unit 7035 at random, is used for determining to satisfy when inserting burden requirement according to the determined comparative result of loading with assumed load that inserts at random of the relevant parameter that newly obtains, and determines that the current time initiation inserts at random.MTC equipment should comprise that specifically the interior part of frame of broken lines or first inserts determining unit 7033 at random among Fig. 7.

In the present embodiment in the MTC equipment the determined satisfied access burden requirement of different units be specially: the determined load that inserts at random is less than assumed load; Or be that the determined load that inserts at random is smaller or equal to assumed load; Or be determined load is no more than setting greater than the degree of assumed load the scope that inserts at random.

Provide the execution mode that MT reconnaissance C equipment is applied to the UMTS system below.

MTC equipment removes has each unit in the above-mentioned execution mode, and as shown in Figure 8, relevant parameter acquiring unit 701 specifically comprises: configuration acquiring unit 7011a is used for obtaining the configuring condition that network side issues the channel of accidental access response according to system broadcast message; Monitoring unit 7012a is used for when disposing a plurality of accidental access response channel, selects part or all of accidental access response channel to monitor by setting rule.Preferably, this relevant parameter acquiring unit 701 also comprises: the first counting unit 7013a, when being used to listen to the accidental access response message that network side issues on described channel, carry out the number statistics; The described load determining unit 702 that inserts at random specifically is used for the accidental access response message number that issues according to network side in the unit interval on described channel, determine to insert at random load.

Preferably, when selecting the accidental access response channel to monitor, insert load determining unit 702 at random, specifically be used for the accidental access response message number that on the accidental access response channel of selecting, issues according to network side in the unit interval, determine the load of access at random of network.

Whether the first counting unit 7013a determines whether network side issues accidental access response message on the channel of being monitored in the present embodiment when carrying out the number statistics, in the following ways: can detect by activating by judging the information on the channel of being monitored; Or by judging whether to decode uplink synchronous code or uplink synchronous code sign on the channel of being monitored.

Relevant parameter acquiring unit 701, when being used for also determining that network side issues accidental access response message on the channel of being monitored, the described accidental access response message that issues is decoded, obtain uplink synchronous code or uplink synchronous identification code that this accidental access response message comprises.

When monitoring unit 7012a selects part or all of accidental access response channel to monitor by the setting rule, access control unit 703 also comprises at random: channel acquiring unit 7036a is used to obtain and inserts the accidental access response channel that load is lower than assumed load at random; Synchronous code acquiring unit 7037a, the accidental access response message decoding that is used to obtain this accidental access response channel obtains uplink synchronous code, or by this accidental access response channel number, obtains the uplink synchronous code set of this accidental access response channel correspondence; The 3rd inserts determining unit 7038a at random, and the uplink synchronous code that is used to utilize described decoding to determine, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain initiate to insert at random.

Provide the execution mode that MT reconnaissance C equipment is applied to the LTE system below.

MTC equipment removes has each unit in the above-mentioned execution mode, the channel of relevant parameter acquiring unit 701 described monitorings is a physical downlink control channel PDCCH, as shown in Figure 9, described relevant parameter acquiring unit 701 specifically comprises: resource distribution acquiring unit 7011b, determine the configuration of available lead code and Physical Random Access Channel PRACH resource according to system broadcast message; Resource identification determining unit 7012b is used for determining according to the configuration of described PRACH resource the RA-RNTI of different PRACH resource correspondences; Select monitoring unit 7013b, be used for monitoring PDCCH by the RA-RNTI institute scrambling of setting the part or all of PRACH resource correspondence of rule selection when the PRACH resource of configuration when being a plurality of; Monitoring information acquiring unit 7014b is used for obtaining the schedule information of the PDCCH that is monitored and the accidental access response message that described schedule information is dispatched.

When described monitoring information acquiring unit 7014b gets access to schedule information among the described PDCCH that utilizes the scrambling of selected RA-RNTI institute, described relevant parameter acquiring unit 701 also comprises: the first statistic unit 7015b, be used for when listening to the described PDCCH that utilizes selected RA-RNTI scrambling, carry out the number statistics; Or described relevant parameter acquiring unit 701 also comprises: the second statistic unit 7016b, during the accidental access response message that is used for dispatching in the schedule information that described monitoring information acquiring unit 7014b gets access to described PDCCH, carry out the number statistics.The described load of access at random determining unit 702 specifically is used for the number according to the described PDCCH that utilizes selected RA-RNTI scrambling that is added up in the unit interval, or the accidental access response message number of dispatching of the schedule information among the PDCCH, determine to insert at random load.

Preferably, when monitoring information acquiring unit 7014b gets access to the accidental access response message that the schedule information among the PDCCH that utilizes the scrambling of selected RA-RNTI institute dispatches, described relevant parameter acquiring unit 701 also comprises: lead code acquiring unit 7017b is used for obtaining the lead code or the lead code sign of the accidental access response message that described schedule information dispatches.Insert load determining unit 702 at random, specifically be used for, determine the load of access at random of the corresponding PRACH of selected RA-RNTI according to the lead code quantity of being obtained in the unit interval.

Relevant parameter acquiring unit 701 also comprises: the 3rd statistic unit 7018b, when being used for getting access to the lead code of the accidental access response message that described schedule information dispatches or lead code sign, carry out the number statistics to instructing lead code; Access load determining unit 702 specifically is used for the number according to the appointment lead code of being added up in the unit interval at random, determines to insert at random load.It is one or more specifying lead code, and when to specify lead code be a plurality of, the described load determining unit 702 that inserts at random specifically was used for specifying lead code breath number according to each of being added up in the unit interval, determines to insert at random load.Or the described load determining unit 702 that inserts at random specifically is used for determining to insert at random load according to the lead code sum of being added up in the unit interval or according to the average of determined each the lead code number of different lead codes.

MTC equipment in the present embodiment, as shown in Figure 7, MTC equipment also comprises: insert at random and require determining unit 704, be used for when definite needs initiate to insert at random, before the described network side of monitoring issues the accidental access response message channel, by the access control message that network side sends, determine whether to satisfy the requirement of setting of access at random; Determine monitoring unit 705, be used for determining that satisfying inserting at random of setting determines to carry out the monitoring of described channel when requiring.Preferably, insert at random and require determining unit 704 definite access control message that specifically are used for basis from the network side reception, determine whether to satisfy the access control requirement of setting; And/or according to the customized information of described MTC device storage, whether definite current network state satisfies the requirement of customization.

Used assumed load when inserting burden requirement in order to obtain to determine whether to satisfy, preferably, this MTC equipment also comprises: assumed load acquiring unit 706, and be used for obtaining described assumed load in the following manner: the notification message according to network side obtains described assumed load; And/or according to being stored on the described MTC equipment or the described assumed load of information acquisition among its associated Universal Integrated Circuit Card UICC.The notification message of described assumed load acquiring unit institute foundation is system broadcast message, beep-page message or signaling message (as NAS signaling, RRC signaling, MAC layer signaling, physical layer signaling etc.).

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. a MTC equipment random access control method is characterized in that, comprising:

2. the method for claim 1 is characterized in that, describedly carries out access control at random, specifically comprises:

Determine not satisfy when inserting burden requirement according to described comparative result, determine that the current time do not initiate to insert at random; And the execution following steps impose a condition to satisfying:

The continuation or first setting-up time of delaying time continue to monitor described channel and obtain described relevant parameter;

Utilize the definite comparative result that inserts load and assumed load at random of relevant parameter that newly obtains, redefining not, initiation inserts at random.

3. method as claimed in claim 2 is characterized in that, described impose a condition in following three conditions any:

Utilize definite load of access at random and the assumed load of newly obtaining of relevant parameter to compare, satisfy when inserting burden requirement, determine initiation access at random;

The described number of times of initiating to insert at random that determines whether reaches set point number;

Total time-delay after determining to need to initiate to insert at random reaches second setting-up time.

4. method as claimed in claim 2 is characterized in that, described satisfied access burden requirement is:

The determined load that inserts at random is greater than assumed load; Or be

The determined load that inserts at random is more than or equal to assumed load; Or be

The determined degree of loading greater than assumed load that inserts at random surpasses the scope of setting.

5. the method for claim 1 is characterized in that, describedly carries out access control at random, specifically comprises:

When determine to satisfy inserting burden requirement according to described comparative result, determine the current time or the 3rd setting-up time of delaying time after initiate to insert at random.

6. the method for claim 1 is characterized in that, describedly carries out access control at random, specifically comprises:

When determine to satisfy inserting burden requirement according to described comparative result, continue or the 4th setting-up time of delaying time after continue to monitor described channel;

According to the determined comparative result of loading that inserts at random of the relevant parameter that newly obtains with assumed load, determine to satisfy when inserting burden requirement, determine that the current time initiation inserts at random.

7. as claim 5 or 6 described methods, it is characterized in that described satisfied access burden requirement is specially:

The determined load that inserts at random is less than assumed load; Or be

The determined load that inserts at random is smaller or equal to assumed load; Or be

The determined load of access at random is no more than the scope of setting greater than the degree of assumed load.

8. as the arbitrary described method of claim 1～6, it is characterized in that this method is applied to the UMTS system.

9. method as claimed in claim 8 is characterized in that, described monitoring network side issues the channel of accidental access response message, specifically comprises:

Obtain the configuring condition that network side issues the channel of accidental access response according to system broadcast message;

When disposing a plurality of accidental access response channel, select part or all of accidental access response channel to monitor by setting rule.

10. method as claimed in claim 9 is characterized in that, the described relevant parameter of determining to insert at random load that obtains specifically comprises:

When listening to the accidental access response message that network side issues on described channel, carry out the number statistics;

Described definite load that inserts at random specifically comprises:

According to the accidental access response message number that network side in the unit interval issues, determine the described load that inserts at random on described channel.

11. method as claimed in claim 10 is characterized in that, described definite load that inserts at random specifically comprises:

According to the accidental access response message number that network side in the unit interval issues, determine the load of access at random of network on the accidental access response channel of selecting.

12. method as claimed in claim 10 is characterized in that, when carrying out the number statistics, determines whether network side issues accidental access response message on the channel of being monitored, in the following ways:

By judging whether the information on the channel of being monitored can detect by activating; Or

By judging whether to decode uplink synchronous code or uplink synchronous code sign on the channel of being monitored.

13. method as claimed in claim 12, it is characterized in that, when determining that network side issues accidental access response message on the channel of being monitored, the described accidental access response message that issues is decoded, obtain uplink synchronous code or uplink synchronous identification code that this accidental access response message comprises.

14. method as claimed in claim 13 is characterized in that, when setting rule and select part or all of accidental access response channel to monitor, describedly carries out access control at random, specifically comprises:

Obtain and insert the accidental access response channel that load is lower than assumed load at random;

The accidental access response message decoding of obtaining this accidental access response channel obtains uplink synchronous code, or by this accidental access response channel number, obtains the uplink synchronous code set of this accidental access response channel correspondence;

The uplink synchronous code that utilizes described decoding to determine, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain initiate to insert at random.

15., it is characterized in that this method is applied to the LTE system as the arbitrary described method of claim 1～6.

16. method as claimed in claim 15 is characterized in that, the channel of described monitoring is a physical downlink control channel PDCCH, monitors described PDCCH, specifically comprises:

Determine the configuration of available lead code and Physical Random Access Channel PRACH resource according to system broadcast message;

Determine the RA-RNTI of different PRACH resource correspondences according to the configuration of described PRACH resource;

When the PRACH resource of configuration when being a plurality of, monitor by setting rule and select the PDCCH of the RA-RNTI institute scrambling of part or all of PRACH resource correspondence;

Obtain the accidental access response message that schedule information among the PDCCH that is monitored and described schedule information are dispatched.

17. method as claimed in claim 16 is characterized in that, when getting access to the schedule information among the described PDCCH that utilizes the scrambling of selected RA-RNTI institute, obtains relevant parameter and is specially:

When listening to the described PDCCH that utilizes selected RA-RNTI scrambling, carry out the number statistics; Or

When getting access to the accidental access response message that the schedule information among the described PDCCH dispatches, carry out the number statistics.

18. method as claimed in claim 17 is characterized in that, described definite load that inserts at random specifically comprises:

According to the number of the described PDCCH that utilizes selected RA-RNTI scrambling that is added up in the unit interval, or the accidental access response message number of dispatching of the schedule information among the PDCCH, determine to insert at random load.

19. method as claimed in claim 16 is characterized in that, when getting access to the accidental access response message that the schedule information among the PDCCH that utilizes the scrambling of selected RA-RNTI institute dispatches, obtains relevant parameter and is specially:

Obtain lead code or lead code sign in the accidental access response message that described schedule information dispatches.

20. method as claimed in claim 19 is characterized in that, described definite load that inserts at random specifically comprises:

According to the lead code quantity of being obtained in the unit interval, determine the load of access at random of the corresponding PRACH of selected RA-RNTI.

21. method as claimed in claim 19 is characterized in that, the described relevant parameter that carries out extracts when being specially the lead code that gets access in the accidental access response message that described schedule information dispatches or lead code sign, carries out the number statistics to instructing lead code; Described definite load that inserts at random specifically comprises:

According to the number of the appointment lead code of being added up in the unit interval, determine to insert at random load.

22. method as claimed in claim 21 is characterized in that, described appointment lead code is one or more, when being a plurality of, specifies lead code breath number according to each of being added up in the unit interval in described appointment lead code, determines to insert at random load.

23. method as claimed in claim 19 is characterized in that, described definite load that inserts at random specifically comprises:

According to the lead code of being added up in unit interval sum or according to the average of determined each the lead code number of different lead codes, determine to insert at random load.

24. as the arbitrary described method of claim 1～6, it is characterized in that, before the described network side of monitoring issues the accidental access response message channel, also comprise:

By the access control message that network side sends, determine whether to satisfy the requirement of setting of access at random;

Determining that satisfying inserting at random of setting determines to carry out the monitoring of described channel when requiring.

25. method as claimed in claim 24 is characterized in that, describedly determines whether that the access of satisfy setting at random requires to comprise following any step:

According to the access control message that receives from network side, determine whether to satisfy the access control requirement of setting;

According to the customized information of described MTC device storage, whether definite current network state satisfies the requirement of customization.

26. the method for claim 1 is characterized in that, described assumed load obtains in the following manner:

Notification message according to network side obtains described assumed load; And/or

According to being stored on the described MTC equipment or the described assumed load of information acquisition among its associated Universal Integrated Circuit Card UICC.

27. method as claimed in claim 26 is characterized in that, described notification message is system broadcast message, beep-page message or signaling message.

28. a MTC equipment is characterized in that, comprising:

29. MTC equipment as claimed in claim 28 is characterized in that, described access control at random unit specifically comprises:

Do not initiate to insert determining unit at random, be used for determining not satisfy when inserting burden requirement, determine that the current time do not initiate to insert at random according to described comparative result;

The subsequent treatment unit when being used for determining that the current time does not initiate to insert at random, being carried out following steps and is imposed a condition to satisfying: continues or first setting-up time of delaying time continues to monitor described channel and obtain described relevant parameter; Utilize the definite comparative result that inserts load and assumed load at random of relevant parameter that newly obtains, redefining not, initiation inserts at random.

30. MTC equipment as claimed in claim 29, it is characterized in that, described impose a condition in following three conditions any: utilize the load of access at random that the relevant parameter newly obtain determines and assumed load relatively, satisfy when inserting burden requirement, determine to initiate access at random; The described number of times of initiating to insert at random that determines whether reaches set point number; Total time-delay after determining to need to initiate to insert at random reaches second setting-up time.

31. MTC equipment as claimed in claim 29 is characterized in that, does not satisfy the access burden requirement to be: the determined load that inserts at random is greater than assumed load; Or be that the determined load that inserts at random is more than or equal to assumed load; Or be determined load surpasses setting greater than the degree of assumed load the scope that inserts at random.

32. MTC equipment as claimed in claim 28 is characterized in that, described access control at random unit specifically comprises:

First inserts determining unit at random, when being used for determine to satisfy inserting burden requirement according to described comparative result, determine the current time or the 3rd setting-up time of delaying time after initiate to insert at random.

33. MTC equipment as claimed in claim 28 is characterized in that, described access control at random unit specifically comprises:

Continue monitoring unit, be used for determining to satisfy when inserting burden requirement according to described comparative result, continue or the 4th setting-up time of delaying time after continue to monitor described channel;

Second inserts determining unit at random, is used for determining to satisfy when inserting burden requirement according to the determined comparative result of loading with assumed load that inserts at random of the relevant parameter that newly obtains, and determines that the current time initiation inserts at random.

34., it is characterized in that described satisfied access burden requirement is specially as claim 32 or 33 described MTC equipment: the determined load that inserts at random is less than assumed load; Or be that the determined load that inserts at random is smaller or equal to assumed load; Or be determined load is no more than setting greater than the degree of assumed load the scope that inserts at random.

35., it is characterized in that this MTC equipment is applied to the UMTS system as the arbitrary described MTC equipment of claim 28～33.

36. MTC equipment as claimed in claim 35 is characterized in that, described relevant parameter acquiring unit specifically comprises:

The configuration acquiring unit is used for obtaining the configuring condition that network side issues the channel of accidental access response according to system broadcast message;

Monitoring unit is used for when disposing a plurality of accidental access response channel, selects part or all of accidental access response channel to monitor by setting rule.

37. MTC equipment as claimed in claim 36 is characterized in that, described relevant parameter acquiring unit also comprises:

First counting unit when being used to listen to the accidental access response message that network side issues on described channel, is carried out the number statistics;

The described load determining unit that inserts at random specifically is used for the accidental access response message number that issues according to network side in the unit interval on described channel, determine the described load that inserts at random.

38. MTC equipment as claimed in claim 37, it is characterized in that, the described load determining unit that inserts at random specifically is used for the accidental access response message number that issues according to network side in the unit interval on the accidental access response channel of selecting, determine the load of access at random of network.

39. MTC equipment as claimed in claim 38, it is characterized in that, described first counting unit is when carrying out the number statistics, determine whether network side issues accidental access response message on the channel of being monitored, in the following ways: whether can detect by activating by judging the information on the channel of being monitored; Or by judging whether to decode uplink synchronous code or uplink synchronous code sign on the channel of being monitored.

40. MTC equipment as claimed in claim 39, it is characterized in that, described relevant parameter acquiring unit, when being used for specifically determining that network side issues accidental access response message on the channel of being monitored, the described accidental access response message that issues is decoded, obtain uplink synchronous code or uplink synchronous identification code that this accidental access response message comprises.

41. MTC equipment as claimed in claim 40 is characterized in that, when described monitoring unit selected part or all of accidental access response channel to monitor by the setting rule, described access control at random unit also comprised:

The channel acquiring unit is used to obtain and inserts the accidental access response channel that load is lower than assumed load at random;

The synchronous code acquiring unit, the accidental access response message decoding that is used to obtain this accidental access response channel obtains uplink synchronous code, or by this accidental access response channel number, obtains the uplink synchronous code set of this accidental access response channel correspondence;

The 3rd inserts determining unit at random, and the uplink synchronous code that is used to utilize described decoding to determine, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain initiate to insert at random.

42., it is characterized in that this MTC equipment is applied to the LTE system as the described MTC equipment of claim 28～33.

43. MTC equipment as claimed in claim 42 is characterized in that, the channel of the described monitoring of described relevant parameter acquiring unit is a physical downlink control channel PDCCH, and described relevant parameter acquiring unit comprises:

The resource distribution acquiring unit is determined the configuration of available lead code and Physical Random Access Channel PRACH resource according to system broadcast message;

The resource identification determining unit is used for determining according to the configuration of described PRACH resource the RA-RNTI of different PRACH resource correspondences;

Select monitoring unit, be used for monitoring PDCCH by the RA-RNTI institute scrambling of setting the part or all of PRACH resource correspondence of rule selection when the PRACH resource of configuration when being a plurality of;

The monitoring information acquiring unit is used for obtaining the schedule information of the PDCCH that is monitored and the accidental access response message that described schedule information is dispatched.

44. MTC equipment as claimed in claim 43, it is characterized in that, when described monitoring information acquiring unit gets access to schedule information among the described PDCCH that utilizes the scrambling of selected RA-RNTI institute, described relevant parameter acquiring unit also comprises: first statistic unit, be used for when listening to the described PDCCH that utilizes selected RA-RNTI scrambling, carry out the number statistics;

Or described relevant parameter acquiring unit also comprises:

Second statistic unit is used for carrying out the number statistics when described monitoring information acquiring unit gets access to the accidental access response message that the schedule information of described PDCCH dispatches.

45. MTC equipment as claimed in claim 44, it is characterized in that, the described load of access at random determining unit specifically is used for the number according to the described PDCCH that utilizes selected RA-RNTI scrambling that is added up in the unit interval, or the accidental access response message number of dispatching of the schedule information among the PDCCH, determine to insert at random load.

46. MTC equipment as claimed in claim 43, it is characterized in that, when described monitoring information acquiring unit got access to the accidental access response message that the schedule information among the PDCCH that utilizes the scrambling of selected RA-RNTI institute dispatches, described relevant parameter acquiring unit also comprised:

The lead code acquiring unit is used for obtaining the lead code or the lead code sign of the accidental access response message that described schedule information dispatches.

47. MTC equipment as claimed in claim 46 is characterized in that, the described load determining unit that inserts at random specifically is used for according to the lead code quantity of being obtained in the unit interval, determines the load of access at random of the corresponding PRACH of selected RA-RNTI.

48. MTC equipment as claimed in claim 46, it is characterized in that, described relevant parameter acquiring unit also comprises: the 3rd statistic unit, when being used for getting access to the lead code of the accidental access response message that described schedule information dispatches or lead code sign, carry out the number statistics to instructing lead code;

The described load of access at random determining unit specifically is used for the number according to the appointment lead code of being added up in the unit interval, determines to insert at random load.

49. MTC equipment as claimed in claim 48, it is characterized in that, described appointment lead code is one or more, in described appointment lead code when being a plurality of, the described load determining unit that inserts at random specifically is used for specifying lead code breath number according to each of being added up in the unit interval, determines to insert at random load.

50. MTC equipment as claimed in claim 46, it is characterized in that, the described load determining unit that inserts at random specifically is used for determining to insert at random load according to the lead code sum of being added up in the unit interval or according to the average of determined each the lead code number of different lead codes.

51. as the arbitrary described MTC equipment of claim 28～33, it is characterized in that, also comprise:

Insert at random and require determining unit, be used for before the described network side of monitoring issues the accidental access response message channel,, determine whether to satisfy the requirement of setting of access at random by the access control message that network side sends;

Determine monitoring unit, be used for determining that satisfying inserting at random of setting determines to carry out the monitoring of described channel when requiring.

52. MTC equipment as claimed in claim 51 is characterized in that, inserts at random to require determining unit to determine specifically to be used for basis from the access control message that network side receives, and determines whether to satisfy the access control requirement of setting; And/or according to the customized information of described MTC device storage, whether definite current network state satisfies the requirement of customization.

53. MTC equipment as claimed in claim 28 is characterized in that, also comprises:

The assumed load acquiring unit, be used for obtaining described assumed load in the following manner: the notification message according to network side obtains described assumed load; And/or according to being stored on the described MTC equipment or the described assumed load of information acquisition among its associated Universal Integrated Circuit Card UICC.

54. MTC equipment as claimed in claim 53 is characterized in that, the notification message of described assumed load acquiring unit institute foundation is system broadcast message, beep-page message or signaling message.