CN102238752B

CN102238752B - Random access control method of machine type communication (MTC) equipment and MTC equipment

Info

Publication number: CN102238752B
Application number: CN201010165110.5A
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: 2014-02-12
Anticipated expiration: 2030-04-30
Also published as: CN102238752A

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 the communication technology of number of different types is organically combined, as: machine is to machine communication, apparatus control communication, man-machine interaction communication, mobile interconnected communication, thus the development of promotion social production and life style.The business of future Human To Human communication may only account for 1/3 of whole terminal market, and the communication of larger quantity is MTC communication service.Sometimes, MTC communication is called again machinery compartment (Machine-to-machine, M2M) communication or Internet of Things.

The Some features that the current MTC communication of recognizing may exist has: 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 not high to requirement of real-time to transfer of data, has time tolerance that is:; MTC plant capacity is limited, requires extremely low power consumption; Between MTC equipment and network side, only carry out the communication of small data quantity; MTC equipment can Yi Zuwei unit manage; An actual MTC equipment can have above-mentioned one or more features.

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

(1) random access procedure in 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 random access request to network side;

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

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

UE sends after random access request, will start the first-class receiving random access response for the treatment of at rapid physical Acquisition Indicator Channel FPACH from next subframe, and the longest stand-by period is notified by system broadcasts.

Each community can configure a plurality of FPACH, and the 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; SYNC_UL (j) represents the numbering of 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 receiving;

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

Step S104, data message or schedule information that UE returns at the upper reception of FACH (Forward Access Channel, forward access channel) network side;

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

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

(2) random access procedure in LTE system

In LTE system, random access comprises the random access of competition and non-competing random access.As shown in Figure 2, competition random process comprises the steps:

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

Network side eNB is responsible for the configuration of available preamble and PRACH resource, and by configuration result, notifies UE by system message.UE is when initiating random access, according to setting preamble code of rules selection and sending random access request.

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

The random access request that eNB sends UE in accidental access response window responds.Accidental access response window length is specified in system message by eNB.Article one, accidental access response message can respond the random access request 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 is by the running time-frequency resource location positioning that sends random access request.

Accidental access response message comprises: the ascending resource of rollback parameter b ackoff, the preamble corresponding with random access request, uplink Timing Advance, distribution, interim C-RNTI (Radio NetworkTemporary Identifier, CELL Radio Network Temporary Identifier).If backoff is used to indicate this random access failure, UE initiates the time delay average of random access next time.UE determines by the preamble sign in RA-RNTI and accidental access response the accidental access response that sends to oneself.If UE does not correctly receive accidental access response, according to backoff, determine and initiate the time delay of random access next time, select in addition PRACH resource to initiate next time access at random.Reach after largest random access number of times, UE MAC layer reports random access problems to radio resource control RRC layer, triggers Radio Link Failure process.

Step S203, UE, according to the accidental access response receiving, utilizes the ascending resource distributing to send uplink information to network side.

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

Non-competing random access can arrive this two kinds of scenes for switching and downlink data, is the random access that indication is initiated in regulation resource according to eNB.As shown in Figure 3, comprise the following steps:

Step S301, UE receives the random access indication that network side issues;

Random access indication is carried UE and is initiated preamble and the PRACH resource (can be one or more) that non-competing random access is used.For handoff scenario, eNB initiates non-competing random access by RRC signaling UE; For downlink data, arrive scene, eNB initiates non-competing random access by PDCCH order notice UE.

Step S302, UE initiates random access request with appointment preamble code in the PRACH of eNB appointment resource;

If specified a plurality of PRACH resources, UE is random in first available subframe that has PRACH resource selects a PRACH resource to send random access request.

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

ENB responds UE after receiving random access request.For non-competing random access, in this step, think that competition has solved.The format and content of accidental access response is the same with the random access of competition.Article one, accidental access response can respond the random access request that a plurality of UE send.

Current mobile communications network designs for interpersonal communication, as determining of: network capacity etc.MTC number of devices is very huge, may reach tens times of existing mobile terminal quantity, when these MTC equipment are all concentrating in a period of time section initiating random access procedure, will cause network congestion.If MTC equipment is treated as common mobile terminal, adopt existing access grade (AccessClass) controlling mechanism to control the random access behavior of MTC equipment, because MTC number of devices is huge, therefore can impact the access of existing mobile terminal.If the special access control mechanism mode for MTC equipment is set, will has larger change to the behavior of network side and terminal equipment.

Summary of the invention

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

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

By monitoring network side, to other subscriber equipmenies, issue the channel of accidental access response message, obtain the relevant parameter of determining random access load;

According to the described relevant parameter obtaining, determine random access load;

Comparative result according to determined random access load and assumed load, carries out random access control.

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

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

Random access determination of power load unit, for determining random access load according to the described relevant parameter obtaining;

Random access control unit, for according to the comparative result of determined random access load and assumed load, carries out random access control.

Utilize MTC equipment random access control method provided by the invention and MTC equipment, there is following beneficial effect: can MTC equipment be determined and be initiated random access by the random access load intensity of judgement network, that can avoid a large amount of MTC terminals access networks cause simultaneously is congested, reduce the impact of MTC equipment access on existing mobile terminal access, meanwhile, reducing the behavior to network equipment changes.

Accompanying drawing explanation

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

Fig. 2 competes random access procedure flow chart in LTE system;

Fig. 3 is non-competing random access procedure flow chart in 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 present invention;

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

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

In 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, the data that send as: MTC equipment are non-emergent data as the reporting of water consumption, and can when network insertion load is low weight, initiate so to access.In view of current random access feature and the above-mentioned characteristic of MTC equipment, the present invention proposes a kind of MTC equipment random access control method.By determining that the intensity of the random access load of network is determined, can initiate random access, carry out random access control, that can avoid a large amount of MTC terminals access networks cause simultaneously is congested, reduce the impact of MTC equipment access on existing mobile terminal access, meanwhile, reducing the behavior to network equipment changes.

Embodiment 1

In the embodiment of the present 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, obtain the relevant parameter of determining random access load;

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

Step S402, determines random access load according to the described relevant parameter obtaining;

After obtaining above-mentioned relevant parameter, can determine random access load according to these relevant parameters, thereby can, by the random access load intensity of current network being detected, judge whether to meet the access burden requirement of initiating random access.

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

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

Step S4031, according to described comparative result, determines whether random access load meets access burden requirement, if do not meet, and execution step S4032, if meet, execution step S4035 or execution step S4036.

Step S4032, when random access load does not meet access burden requirement, determines the current random access of not initiating; Continuation or time delay the first setting-up time continue monitor described channel and obtain described relevant parameter; Time delay the first setting-up time can constant time lag or random delay.

Step S4033, utilizes definite random access load and the assumed load comparison of relevant parameter of newly obtaining, and redefines no initiation and accesses at random.

Whether step S4034, meet and impose a condition, if do not meet, returns to execution step S4033, if meet, finishes.

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

1) utilize definite random access load and the assumed load comparison of relevant parameter of newly obtaining, while meeting access burden requirement, determine and initiate access at random, thereby finish.

2) described in, determine whether that the number of times of initiating random access reaches set point number, that is: when carrying out continuously the judgement of random access load and reach certain number of times, finish to carry out the judgement of random access load, directly initiate random access, or indicate current state to stop random access attempts this time to high level, thereby finish.

3) determine and need total time delay of initiating after random access to reach the second setting-up time, that is: after the long period, determine when current network load is not suitable for initiating to connect at random, finish to carry out the judgement of random access load, directly initiate random access, or indicate current state to stop random access attempts this time to high level, thereby finish.

Step S4035, while determine meeting access burden requirement according to described comparative result, initiates random access after determining current time or time delay the 3rd setting-up time.

When meeting access burden requirement, can initiate random access at once, because network has certain stability, also can after time delay a period of time, initiate random access.The concrete time postponing can be set within the specific limits at random.

Step S4036, while determining satisfied access burden requirement according to described comparative result, continues to monitor described channel after continuation or time delay the 4th setting-up time;

Determine while meeting access burden requirement, in order to determine that network is stable in longer a period of time, can proceed or proceed after time delay a period of time again channel-monitoring.

Step S4037, according to the comparative result of the determined random access load of the relevant parameter newly obtaining and assumed load, determines while meeting access burden requirement, determines the random access of current time initiation.Certainly, judge whether continuously to meet access burden requirement and can set at least one times, be not limited to continuous several times judgement.

During concrete enforcement, according to determining whether random access load meets access burden requirement, can adopt random access load and the assumed load determined are compared, thereby determine whether to meet access burden requirement.Preferably, in the present embodiment, not meeting access burden requirement is specially: determined random access load is greater than assumed load; Or load and be more than or equal to assumed load for determined random access; Or the degree that is greater than assumed load for determined random access load surpasses the scope of setting.In the present embodiment, meeting access burden requirement is specially: determined random access load is less than assumed load; Or load and be less than or equal to assumed load for determined random access; Or the degree that is greater than assumed load for determined random access load is no more than the scope of setting.It should be noted that, divided by the condition that does not meet access burden requirement above listing and satisfied access outside burden requirement condition, certainly can also set other condition for not meeting the condition and satisfied access burden requirement condition of access burden requirement.It should be noted that in a concrete execution mode, the condition that does not meet access burden requirement of setting and satisfied access burden requirement condition can not be conflicted mutually, as: when not meeting the condition of access burden requirement, be that determined random access load is greater than assumed load, so corresponding satisfied access burden requirement condition need be made as determined random access load and be less than or equal to assumed load.

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

The MTC equipment random access control method providing by the above embodiment of the present invention, when determine to need initiating random access, can carry out the access determination of power load of current network.Utilize MTC to select network to access at random duty ratio lower time to the not high feature of requirement of real-time, then carry out random access procedure.Like this, can avoid a large amount of MTC equipment to initiate random access and cause network congestion, reduce the impact of MTC equipment access on existing mobile terminal access, meanwhile, reduce the behavior to network equipment and change, and also do not affect the proper communication of MTC equipment.

Embodiment 2

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

According to UMTS system random access process, during random access request that UE initiates to comprise from uplink synchronous code SYNC_UL/ uplink synchronous code sign preamble to network side, network side issues accidental access response message to UE rapid physical Acquisition Indicator Channel FPACH (TDD system)/AICH (WCDMA system) is upper.Therefore the channel that, in the present embodiment, MTC equipment is monitored is FPACH (TDD system)/AICH (WCDMA system).By detecting the random access load intensity of FPACH/AICH channel, carry out random access control.As shown in Figure 5, comprise step:

Step S501, when MTC equipment has data to send, carries out FPACH (TDD system)/AICH (WCDMA system) channel-monitoring according to setting rules selection, obtains the relevant parameter of determining random access load;

Each community can configure a plurality of FPACH/AICH, the 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, by setting the part or all of FPACH/AICH channel of rules selection, monitor.

The relevant parameter that obtains the random access load of determining network in the present embodiment, specifically comprises: while listening to the accidental access response message that network side issues on described channel, carry out number statistics.

Step S502, the accidental access response message number issuing on the FPACH/AICH monitoring according to network side in the unit interval, determines that the random access of network is loaded.

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 current random access load intensity.

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

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

According to comparative result, judge whether determined random access load intensity (the accidental access response message number issuing on the FPACH/AICH monitoring for network side in the unit interval in the present embodiment) meets access burden requirement, concrete determination methods is with embodiment 1, if the comparative result of comparing with the load intensity of setting is for being less than/being less than or equal to/be greater than and be no more than setting range, determines and meet access burden requirement; While determine meeting access burden requirement, according to the method for implementing 1, can initiate random access at once and also can postpone a period of time after (fixed delay or random delay) and initiate again random access; The comparative result of comparing with the load intensity of setting is when being greater than/being more than or equal to/be greater than and be no more than setting range, determine and do not meet access burden requirement, currently do not initiate random access, can continue to monitor FPACH/AICH obtains relevant parameter and carries out the judgement of random access load, also can interval certain hour (fixed delay or random delay) preferably as after 5.12s, continue to monitor FPACH/AICH and obtain relevant parameter and carry out the judgement of random access load, to initiate random access.If can access network, initiating random access procedure; Otherwise, again judge.The like, until successful access network, or reach the maximum attempts of setting or till the trial time.

Accidental access response message number when statistics listening in the present embodiment, determine whether network side issues accidental access response message on monitored channel, in the following ways: whether the information on the FPACH/AICH monitoring by judgement can detect by activation, if detect by activation, illustrate and listen to accidental access response message, otherwise explanation does not listen to; Or by whether decoding uplink synchronous code on the channel monitored of judgement or uplink synchronous code identifies, if be correctly decoded, illustrate and listen to accidental access response message, otherwise illustrate and do not listen to.

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

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

Embodiment 3

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

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 by configuration result, notifies UE by system message.No matter be competition random access procedure, or non-competing random access procedure, network side receives after the lead code preamble of UE transmission, at PDSCH (Physical Downlink Shared Channel, physical down link sharing channel) accidental access response issuing is by PDCCH (the Physical Down ControlChannel of RA-RNTI scrambling, Physical Downlink Control Channel) in, schedule information is dispatched, and RA-RNTI is by the PRACH running time-frequency resource location positioning that sends random access request.Therefore MTC equipment is monitored the PDCCH of RA-RNTI institute scrambling corresponding to PRACH resource, and the information that can obtain comprises: schedule information in the PDCCH monitoring; The accidental access response message of being dispatched by this schedule information; The information such as lead code in this accidental access response message.As shown in Figure 6, in the present embodiment, MTC equipment random access control method comprises step:

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

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

Because RA-RNTI is corresponding with the resource that subscriber equipment sends random access request message.Therefore monitor the PDCCH of RA-RNTI institute scrambling, can obtain random access request in current network and send situation.

While getting the schedule information in 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 following parameter any or two:

1), while listening to the described PDCCH that utilizes selected RA-RNTI scrambling, carry out number statistics, while listening to the described PDCCH that utilizes selected RA-RNTI scrambling, illustrate that network side is to utilizing the subscriber equipment of the PRACH resource transmission random access request message (that is: preamble) that selected RA-RNTI is corresponding to carry out accidental access response, therefore, carry out number statistics when listening to the described PDCCH that utilizes selected RA-RNTI scrambling, can obtain network side utilizes the random access request message of the PRACH resource transmission that selected RA-RNTI is corresponding to carry out the number of accidental access response to subscriber equipment, thereby obtain the information on load of random access.

2), while getting the accidental access response message that the schedule information in monitored PDCCH 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 sending in PDCCH.

Step S602, determines random access load according to the relevant parameter obtaining in step S601;

During concrete enforcement, by following combination arbitrary or two kinds of modes, determine that the random access of network loads:

1) according to the number of the described PDCCH that utilizes selected RA-RNTI scrambling adding up in the unit interval.While 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 in the PDCCH adding up in the unit interval, determines random access load.While selecting the described PDCCH of different RA-RNTI scramblings to monitor, can obtain the number that in the PDCCH of different RA-RNTI institute scrambling, schedule information is dispatched.

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

When the random access load intensity of judgement meets the access burden requirement of setting, concrete determination methods is with embodiment 1, if the random access load intensity when judgement and assumed load strength relationship are when being less than/being less than or equal to/be greater than and be no more than setting range, according to the method for implementing 1, can initiate random access at once and also can postpone a period of time after (fixed delay or random delay) and initiating random access; The satisfied access burden requirement of setting of random access load intensity when judgement, as the load intensity with setting closes, be to be greater than/to be more than or equal to/be greater than and surpass setting range, the described PDCCH that can continue to monitor selected RA-RNTI scrambling obtains relevant parameter and carries out the judgement of random access load, also can interval certain hour (fixed delay or random delay), preferably as after 5.12s, the described PDCCH that continues the selected RA-RNTI scrambling of monitoring obtains relevant parameter and carries out the judgement of random access load, to judge whether initiating random access.If access at random load intensity, allow access network, initiating random access procedure; Otherwise, again judge.The like, until successful access network, or reach the maximum attempts of setting or till the trial time.

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

When step S601 obtains relevant parameter:

1), while getting the accidental access response message that the schedule information in 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;

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

If select monitored, be the PDCCH of different RA-RNTI institute scrambling, can obtain lead code preamble or lead code preamble sign in the accidental access response message that in the PDCCH of different RA-RNTI institute scrambling, schedule information is dispatched.Thereby can obtain lead code preamble or lead code preamble sign in accidental access response message corresponding to different PRACH resources.

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

In step S602, determine that random access load can be in the following way:

1), according to the lead code quantity of obtaining in the unit interval, determine the upper corresponding random access load of selected PRACH;

2), according to the number of the appointment lead code of adding up in the unit interval, determine random access load;

3) in described appointment lead code, while being a plurality of, according to each of adding up in the unit interval, specify lead code breath number, determine random access load;

4), according to the lead code sum of adding up in the unit interval or according to the average of determined each lead code number of different lead codes, determine random access 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 be used;

If current available PRACH resource has 2, the index of these two PRACH resources is: { 1,2}, because the concrete position that adopts which kind of mode to identify PRACH resource is not yet definite in current standard, 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;

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

The method of the RA-RNTI that definite PRACH resource of adopting in current standard is corresponding 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 corresponding frequency domain index (0≤f_id < 6) in that subframe.

(3), within a period of time, the quantity that listens to the random access preamble comprising in the accidental access response message that the quantity of PDCCH of RA-RNTI scrambling corresponding to the PRACH resource of selection and/or RA-RNTI are corresponding by judgement is determined current random access load intensity.

If MTC equipment is at the 50ms monitoring in the time period, the quantity of the preamble index comprising in the accidental access response message receiving in every 10ms surpasses 20.

(4), when definite load intensity meets the access burden requirement of setting, initiate random access; Otherwise, currently do not initiate random access.Follow-up can continuation monitored, and finds random access chance.Here, establish MTC equipment random access intensity of statistics network again after 5.12s, oneself whether can access network to judge.The like, until successful access network, or reach the maximum attempts of setting or till the trial time.

The judgement of supposing current setting accesses the mode that load intensity do not meet the access burden requirement of setting at random: if the quantity of the preamble index comprising in the accidental access response message receiving in every 10ms surpasses 20, and lasting 50ms, MTC equipment now can not access network so.When being judged as can not access network time, the time of again carrying out random access judgement that MTC equipment allows is 5.12s.

In addition,, after judging by the random access load judgment rule of setting and can accessing at random, after can initiating random access at once and also a period of time can being postponed, initiating random access; In addition, when judging after current can access at random by the random access load judgment rule of setting, can proceed to access at random intensity judgement, also can interval certain hour after, then access at random intensity judgement, to initiate random access.

Embodiment 4

UTRAN and E-UTRAN are that UE arranges access grade (access class, AC), and object is to limit in some cases in some UE community to access.About broadcasting in the system information block that whether allows the information of access to broadcast in community in different access grade UE community.

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

For access grade 10-15, UTRAN and E-UTRAN have adopted identical indicating mode, by explicit mode, point out that the UE of corresponding which access grade can initiate access.For access grade 0-9, UTRAN is still by demonstration and indicates the user of corresponding which access grade to access; In E-UTRAN, by two parameters, come corresponding A C 0-9 user to carry out access control, two parameters are: access probability parameter (ac-BarringFactor) and forbid parameter turn-on time (ac-BarringTime).When LTE UE initiates the calling (that is: be not to have received the calling of initiating after beep-page message indication) of an active, UE produces a random number, then by the access probability parameter that random number and the current system of generation are broadcasted, compares.If the random number producing is less than the access probability parameter of current system broadcast, UE can access at random; Otherwise UE can not access in the time span of parameter indication turn-on time forbidding.

In the embodiment of the present invention, when there is the access control information that is used for MTC equipment, the present invention can be combined with access control information on the basis of embodiment 1,2 or 3.In the present embodiment, while determine to need initiating random access, issue before accidental access response message channel monitoring described network side, also comprise:

The access control message sending by network side (as: access grade prohibition information), determines whether to meet the random access requirement of setting;

When MTC equipment has data to send, the access control message first sending according to network side judges whether to allow oneself access.For LTE system, can stipulate when access probability parameter is greater than a certain threshold value, just allow MTC equipment to initiate the business initiating random access procedure of certain type.When access probability parameter is when setting thresholding, according to forbidding that turn-on time, parameter judged after postponing again.For UMTS system, whether UE need to " be forbidden access (barring) " according to access grade corresponding in 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 meets the requirement of customization.

By access control information, while determining that meeting the random access of setting requires, determine the monitoring of carrying out described channel.

MTC equipment is in the situation that according to access control information, judgement allows access, and according to flow process described in embodiment 1,2 or 3, follow-up random access control is carried out in definite monitoring of carrying out described channel.

It should be noted that, at MTC, in the process that judges whether to access according to random access load intensity, can carry out system information renewal.Before MTC equipment initiating random access procedure, the access control information of carrying in the system information after upgrading becomes while not allowing MTC equipment to access, and can regulation continue to process by flow process described in embodiment 1,2 or 3; Also can finish current basis and access at random the deterministic process that load intensity judges whether to carry out random access, and again by access control information, judge, after allowing, access control information again according to random access load intensity, judges whether to access at random again.

MTC equipment, when existing data to send, judges and accesses at random load judgement according to network according to access control information also can be set as allowing to carry out, when time then the initiating random access procedure of both meeting the demands simultaneously.The process that accesses at random load judgement according to access control information judgement and network can be separate, and the process that random access load judges is identical with embodiment 1,2 or 3, repeats no more here.

Embodiment 5

In embodiments of the invention, a kind of MTC equipment of controlling random access is provided, as shown in Figure 7, this MTC equipment comprises: relevant parameter acquiring unit 701, for issuing the channel of accidental access response message to other subscriber equipmenies by monitoring network side, obtain the relevant parameter of determining random access load; Random access determination of power load unit 702, for determining random access load according to the described relevant parameter obtaining; Random access control unit 703, for according to the comparative result of determined random access load and assumed load, carries out random access control.

Preferably, random access control unit 703, specifically comprises: do not initiate to access at random determining unit 7031, while not meeting access burden requirement for determining according to described comparative result, determine that current time do not initiate random access; Subsequent treatment unit 7032, while not initiating to access at random for definite current time, carries out following steps and imposes a condition to meeting: continuation or time delay the first setting-up time continuation are monitored described channel and obtain described relevant parameter; The random access load that the relevant parameter that utilization is newly obtained is determined and the comparative result of assumed load, redefine no initiation and access at random.During concrete enforcement, described in impose a condition in following three conditions any: the random access load and the assumed load comparison that utilize the relevant parameter that newly obtains to determine, while meeting access burden requirement, determine and initiate to access at random; The described number of times that determines whether to initiate random access reaches set point number; Determine and need total time delay of initiating after random access to reach the second setting-up time.

In the present embodiment, in MTC equipment, the determined satisfied access burden requirement of different units is: determined random access load is greater than assumed load; Or load and be more than or equal to assumed load for determined random access; Or the degree that is greater than assumed load for determined random access load surpasses the scope of setting.

In addition, described random access control unit 703 also comprises: the first random access determining unit 7033, while meeting access burden requirement for determining according to described comparative result, initiate random access after determining current time or time delay the 3rd setting-up time.Or described random access control unit 703, also comprises: continue monitoring unit 7034, while meeting access burden requirement for determining according to described comparative result, continue to monitor described channel after continuation or time delay the 4th setting-up time; The second random determining unit 7035 that accesses, for according to the determined random access load of relevant parameter newly obtaining and the comparative result of assumed load, determines while meeting access burden requirement, determines the random access of current time initiation.MTC equipment specifically should comprise the interior part of dotted line frame or the first random access determining unit 7033 in Fig. 7.

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

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

MTC equipment is except having unit in above-mentioned execution mode, and as shown in Figure 8, relevant parameter acquiring unit 701 specifically comprises: configuration acquiring unit 7011a, for obtain the configuring condition that network side issues the channel of accidental access response according to system broadcast message; Monitoring unit 7012a, for when disposing a plurality of accidental access response channel, monitors by setting the part or all of accidental access response channel of rules selection.Preferably, this relevant parameter acquiring unit 701 also comprises: the first counting unit 7013a, when listening to the accidental access response message that network side issues on described channel, carries out number statistics; The accidental access response message number of described random access determination of power load unit 702 specifically for issuing on described channel according to network side in the unit interval, determines random access load.

Preferably, when selecting accidental access response channel to monitor, random access determination of power load unit 702, specifically for the accidental access response message number issuing on the accidental access response channel of selecting according to network side in the unit interval, determines the random access load of network.

In the present embodiment, the first counting unit 7013a, when carrying out number statistics, determines whether network side issues accidental access response message on monitored channel, in the following ways: whether the information on the channel of monitoring by judgement can detect by activation; Or by whether decoding uplink synchronous code on the channel monitored of judgement or uplink synchronous code identifies.

Relevant parameter acquiring unit 701, while also issuing accidental access response message for definite network side on monitored channel, the described accidental access response message issuing is decoded, obtain uplink synchronous code or uplink synchronous identification code that this accidental access response message comprises.

When monitoring unit 7012a monitors by the part or all of accidental access response channel of setting rules selection, random access control unit 703 also comprises: channel acquiring unit 7036a, for obtaining random access load lower than the accidental access response channel of assumed load; Synchronous code acquiring unit 7037a, obtains uplink synchronous code for obtaining to the accidental access response message decoding of this accidental access response channel, or by this accidental access response channel number, obtains the uplink synchronous code set that this accidental access response channel is corresponding; The 3rd random access determining unit 7038a, for utilizing the definite uplink synchronous code of described decoding, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain, initiate access at random.

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

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

When described monitoring information acquiring unit 7014b gets the schedule information in 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, for when listening to the described PDCCH that utilizes selected RA-RNTI scrambling, carry out number statistics; Or described relevant parameter acquiring unit 701 also comprises: the second statistic unit 7016b, during the accidental access response message of dispatching for the schedule information that gets described PDCCH at described monitoring information acquiring unit 7014b, carries out number statistics.Described random access determination of power load unit 702 is specifically for according to the number of the described PDCCH that utilizes selected RA-RNTI scrambling adding up in the unit interval, or the accidental access response message number of dispatching of the schedule information in PDCCH, determine random access load.

Preferably, when monitoring information acquiring unit 7014b gets the accidental access response message that the schedule information in 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, and for obtaining lead code or the lead code sign of the accidental access response message that described schedule information dispatches.Random access determination of power load unit 702, specifically for according to the lead code quantity of obtaining in the unit interval, determines the random access load of the corresponding PRACH of selected RA-RNTI.

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

MTC equipment in the present embodiment, as shown in Figure 7, MTC equipment also comprises: random access requires determining unit 704, for when determine to need initiating random access, at the described network side of monitoring, issue before accidental access response message channel, the access control message sending by network side, determines whether to meet the random access requirement of setting; Determine monitoring unit 705, for determine the monitoring of carrying out described channel when determining that meeting the random access of setting requires.Preferably, random access requires determining unit 704 to determine specifically for according to the access control message receiving from network side, determines whether to meet the access control requirement of setting; And/or according to the customized information of described MTC device storage, whether definite current network state meets the requirement of customization.

Assumed load used while determining whether to meet access burden requirement in order to obtain, preferably, this MTC equipment also comprises: assumed load acquiring unit 706, for obtaining in the following manner described assumed load: obtain described assumed load according to the notification message of network side; And/or according to being stored on described MTC equipment or in its associated Universal Integrated Circuit Card UICC assumed load described in information acquisition.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 and not depart 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 is also 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, described in carry out random access control, specifically comprise:

According to described comparative result, determine while not meeting access burden requirement, determine that current time do not initiate random access; And carry out following steps and impose a condition to meeting:

Continuation or time delay the first setting-up time continue monitor described channel and obtain described relevant parameter;

The random access load that the relevant parameter that utilization is newly obtained is determined and the comparative result of assumed load, redefine and whether initiate random access.

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

Utilize definite random access load and the assumed load comparison of relevant parameter of newly obtaining, while meeting access burden requirement, determine and initiate access at random;

The described number of times that determines whether to initiate random access reaches set point number;

Determine and need total time delay of initiating after random access to reach the second setting-up time.

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

Determined random access load is greater than assumed load; Or be

Determined random access load is more than or equal to assumed load; Or be

The degree that determined random access load is greater than assumed load surpasses the scope of setting.

5. the method for claim 1, is characterized in that, described in carry out random access control, specifically comprise:

While determine meeting access burden requirement according to described comparative result, initiate random access after determining current time or time delay the 3rd setting-up time.

6. the method for claim 1, is characterized in that, described in carry out random access control, specifically comprise:

While determining satisfied access burden requirement according to described comparative result, after continuation or time delay the 4th setting-up time, continue to monitor described channel;

According to the comparative result of the determined random access load of the relevant parameter newly obtaining and assumed load, determine while meeting access burden requirement, determine the random access of current time initiation.

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

Determined random access load is less than assumed load; Or be

Determined random access load is less than or equal to assumed load; Or be

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

8. the method as described in as arbitrary in claim 1～6, is characterized in that, the method is applied to 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:

According to system broadcast message, obtain the configuring condition that network side issues the channel of accidental access response;

While disposing a plurality of accidental access response channel, by setting the part or all of accidental access response channel of rules selection, monitor.

10. method as claimed in claim 9, is characterized in that, described in obtain the relevant parameter of determining random access load, specifically comprise:

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

Described definite random access load, specifically comprises:

The accidental access response message number issuing on described channel according to network side in the unit interval, determines described random access load.

11. methods as claimed in claim 10, is characterized in that, described definite random access load, specifically comprises:

The accidental access response message number issuing on the accidental access response channel of selecting according to network side in the unit interval, determines that the random access of network is loaded.

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

Whether the information on the channel of monitoring by judgement can detect by activation; Or

By whether decoding uplink synchronous code on the channel monitored of judgement or uplink synchronous code identifies.

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

14. methods as claimed in claim 13, is characterized in that, when setting the part or all of accidental access response channel of rules selection and monitor, described in carry out random access control, specifically comprise:

Obtain random access load lower than the accidental access response channel of assumed load;

Obtain the accidental access response message decoding of this accidental access response channel is obtained to uplink synchronous code, or by this accidental access response channel number, obtain the uplink synchronous code set that this accidental access response channel is corresponding;

Utilize the definite uplink synchronous code of described decoding, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain, access at random initiated.

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

16. methods as claimed in claim 15, is characterized in that, the channel of described monitoring is physical downlink control channel PDCCH, monitor described PDCCH, specifically comprise:

According to system broadcast message, determine the configuration of available lead code and Physical Random Access Channel PRACH resource;

According to the configuration of described PRACH resource, determine RA-RNTI corresponding to different PRACH resources;

When the PRACH resource of configuration is while being a plurality of, monitor by the PDCCH that sets RA-RNTI institute scrambling corresponding to the part or all of PRACH resource of rules selection;

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

17. methods as claimed in claim 16, is characterized in that, while getting the schedule information in the described PDCCH that utilizes the scrambling of selected RA-RNTI institute, obtain relevant parameter and are specially:

While listening to the described PDCCH that utilizes selected RA-RNTI scrambling, the number of PDCCH is added up; Or

While getting the accidental access response message that the schedule information in described PDCCH dispatches, carry out number statistics.

18. methods as claimed in claim 17, is characterized in that, described definite random access load, specifically comprises:

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

19. methods as claimed in claim 16, is characterized in that, while getting the accidental access response message that the schedule information in the PDCCH that utilizes the scrambling of selected RA-RNTI institute dispatches, obtain relevant parameter and are specially:

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

20. methods as claimed in claim 19, is characterized in that, described definite random access load, specifically comprises:

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

21. methods as claimed in claim 19, is characterized in that, described in carry out relevant parameter and extract while being specially the lead code that gets in the accidental access response message that described schedule information dispatches or lead code sign, to specifying lead code to carry out number statistics; Described definite random access load, specifically comprises:

According to the number of the appointment lead code of adding up in the unit interval, determine random access load.

22. methods as claimed in claim 21, is characterized in that, described appointment lead code is one or more, in described appointment lead code, while being a plurality of, according to each of adding up in the unit interval, specify lead code breath number, determine random access load.

23. methods as claimed in claim 19, is characterized in that, described definite random access load, specifically comprises:

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

24. methods as described in as arbitrary in claim 1～6, is characterized in that, issue before accidental access response message channel monitoring described network side, also comprise:

The access control message sending by network side, determines whether to meet the random access requirement of setting;

When determining that meeting the random access of setting requires, determine the monitoring of carrying out described channel.

25. methods as claimed in claim 24, is characterized in that, described in determine whether that the random access of meet setting requires to comprise following any step:

According to the access control message receiving from network side, determine whether to meet the access control requirement of setting;

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

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

According to the notification message of network side, obtain described assumed load; And/or

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

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

28. 1 kinds of MTC equipment, is characterized in that, comprising:

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

Do not initiate to access at random determining unit, while not meeting access burden requirement for determining according to described comparative result, determine that current time do not initiate random access;

Subsequent treatment unit, while not initiating to access at random for definite current time, carries out following steps and imposes a condition to meeting: continuation or time delay the first setting-up time continuation are monitored described channel and obtain described relevant parameter; The random access load that the relevant parameter that utilization is newly obtained is determined and the comparative result of assumed load, redefine and whether initiate random access.

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

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

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

The first random access determining unit, while meeting access burden requirement for determining according to described comparative result, initiates random access after determining current time or time delay the 3rd setting-up time.

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

Continue monitoring unit, while meeting access burden requirement for determining according to described comparative result, after continuation or time delay the 4th setting-up time, continue to monitor described channel;

The second random determining unit that accesses, for according to the determined random access load of relevant parameter newly obtaining and the comparative result of assumed load, determines while meeting access burden requirement, determines the random access of current time initiation.

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

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

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

Configuration acquiring unit, for obtaining the configuring condition that network side issues the channel of accidental access response according to system broadcast message;

Monitoring unit, for when disposing a plurality of accidental access response channel, monitors by setting the part or all of accidental access response channel of rules selection.

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

The first counting unit, when listening to the accidental access response message that network side issues on described channel, carries out number statistics;

The accidental access response message number of described random access determination of power load unit specifically for issuing on described channel according to network side in the unit interval, determines described random access load.

38. MTC equipment as claimed in claim 37, it is characterized in that, described random access determination of power load unit, specifically for the accidental access response message number issuing on the accidental access response channel of selecting according to network side in the unit interval, determines the random access load of network.

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

40. MTC equipment as claimed in claim 39, it is characterized in that, described relevant parameter acquiring unit, while issuing accidental access response message specifically for definite network side on monitored channel, the described accidental access response message issuing 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, described monitoring unit is by setting the partly or entirely random access of rules selection when answering channel to monitor, and described random access control unit also comprises:

Channel acquiring unit, for obtaining random access load lower than the accidental access response channel of assumed load;

Synchronous code acquiring unit, obtains uplink synchronous code for obtaining to the accidental access response message decoding of this accidental access response channel, or by this accidental access response channel number, obtains the uplink synchronous code set that this accidental access response channel is corresponding;

The 3rd random access determining unit, for utilizing the definite uplink synchronous code of described decoding, or a uplink synchronous code in the uplink synchronous code set of selecting to obtain, initiate access at random.

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

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

Resource distribution acquiring unit, determines the configuration of available lead code and Physical Random Access Channel PRACH resource according to system broadcast message;

Resource identification determining unit, for determining RA-RNTI corresponding to different PRACH resources according to the configuration of described PRACH resource;

Select monitoring unit, while being a plurality of for the PRACH resource when configuration, monitor by the PDCCH that sets RA-RNTI institute scrambling corresponding to the part or all of PRACH resource of rules selection;

Monitoring information acquiring unit, for obtaining the schedule information of monitored PDCCH 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 the schedule information in the described PDCCH that utilizes the scrambling of selected RA-RNTI institute, described relevant parameter acquiring unit also comprises: the first statistic unit, for when listening to the described PDCCH that utilizes selected RA-RNTI scrambling, the number of PDCCH is added up;

Or described relevant parameter acquiring unit also comprises:

The second statistic unit, during the accidental access response message of dispatching for the schedule information that gets described PDCCH at described monitoring information acquiring unit, carries out number statistics.

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

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

Lead code acquiring unit, for obtaining 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 random access load of the corresponding PRACH of selected RA-RNTI, specifically for according to the lead code quantity of obtaining in the unit interval, is determined in described random access determination of power load unit.

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 getting the lead code of the accidental access response message that described schedule information dispatches or lead code sign, to specifying lead code to carry out number statistics;

Random access load, specifically for according to the number of the appointment lead code of adding up in the unit interval, is determined in described random access determination of power load unit.

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 while being a plurality of, random access load, specifically for specify lead code breath number according to each of adding up in the unit interval, is determined in described random access determination of power load unit.

50. MTC equipment as claimed in claim 46, it is characterized in that, random access load, specifically for according to the lead code sum of adding up in the unit interval or according to the average of determined each lead code number of different lead codes, is determined in described random access determination of power load unit.

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

Random access requires determining unit, and for issuing before accidental access response message channel at the described network side of monitoring, the access control message sending by network side, determines whether to meet the random access requirement of setting;

Determine monitoring unit, for determine the monitoring of carrying out described channel when determining that meeting the random access of setting requires.

52. MTC equipment as claimed in claim 51, is characterized in that, random access requires determining unit to determine specifically for according to the access control message receiving from network side, determines whether to meet the access control requirement of setting; And/or according to the customized information of described MTC device storage, whether definite current network state meets the requirement of customization.

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

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

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.