CN102740492B - Random access control method and system - Google Patents
Random access control method and system Download PDFInfo
- Publication number
- CN102740492B CN102740492B CN201110081971.XA CN201110081971A CN102740492B CN 102740492 B CN102740492 B CN 102740492B CN 201110081971 A CN201110081971 A CN 201110081971A CN 102740492 B CN102740492 B CN 102740492B
- Authority
- CN
- China
- Prior art keywords
- terminal
- access
- delay
- time
- temporal information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of random access control method and system, this method includes：Terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process；Terminal is according to the access delay temporal information obtained from network side, computing relay time；Terminal is after time delay is postponed, initiating random access procedure.The present invention improves the success rate of Stochastic accessing.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of random access control method and system.
Background technology
Person to person's communication (Human to Human, referred to as H2H) refers to that people is communicated by the operation to equipment, existing
It is that the Communication Development based on H2H is got up to have wireless communication technology, and machine and machine communication (Machine to Machine,
Referred to as M2M) it is sensu lato definition be that it is base using machine terminal intelligent interaction as core, the application and service of networking
It is the informatization resolve scheme that client provides, for meeting visitor using communication as access means in intelligence machine terminal
Information system requirement of the family to monitoring, command scheduling, data acquisition and measurement etc..
An important factor for development of wireless technology is M2M market developments, it breaches the space-time limitation of conventional communication mode
With region obstacle, enterprise and the public has been broken away from cable constraint, allow client more effectively control cost, reduce mounting cost and
It is easy to use.Constantly advanced in addition, growing demand driving M2M, with information processing capability and Netowrk tape
Wide constantly to increase paradoxically, the means of acquisition of information lag far behind, and M2M meets this demand of people well,
External environment condition can be monitored in real time by technology people, realize the information gathering of a wide range of automation.Therefore, M2M can be answered
For fields such as sector application, domestic. applications, individual applications, industry application field use for example：Traffic monitoring, alarm system
System, rescue at sea, automatic vending machine, drive payment etc., domestic application domain use for example：Automatic data logging, temperature control
Deng, individual application field use for example：Life detection, remote diagnostics etc..
M2M communication object is Machine To Machine or Human-to-Machine, the data communication definitions between one or more machines
For machine type communication (Machine Type Communication, referred to as MTC), in this case less need for it is man-machine mutually
It is dynamic, MTC machine is participated in, is defined as MTC device (MTC device, referred to as MD).MTC device is the terminal of MTC user, can
By public land mobile network (Public Land Mobile Network, referred to as PLMN) network and MTC device,
MTC server is communicated.
After introducing M2M applications, some optimizations can be carried out to existing system according to its feature, to meet M2M application demands,
And the common H2H equipment in existing system is not had an impact.Some distinguishing features of M2M applications include：MTC device quantity
It is huge, the remote super existing H2H equipment of quantity；Data transfer is regular, and the data volume transmitted every time is small；The mobility of MTC device
Relatively low, substantial portion of MTC device does not move.
, it is necessary to initiate Stochastic accessing when MTC device accesses network, Fig. 1 is based on competing in the LTE system according to correlation technique
The flow chart for the random access procedure striven, as shown in figure 1, at Long Term Evolution (Long Term Evolution, referred to as LTE)
In, the random access procedure based on competition mainly includes steps S102 to step S108.
Step S102：User equipment (User Equipment, referred to as UE) randomly chooses a prefix code
(Preamble), sent out on Physical Random Access Channel (Physical Random Access Channel, referred to as PRACH)
Send.
Step S104：Base station (eNB) is after having detected that Preamble codes are sent, descending transmission accidental access response
(Random Access Response, referred to as RAR), following information is generally comprised in the accidental access response：Received
The numberings of Preamble codes, time adjustment amount corresponding to the Preamble codes that are received, be the terminal distribution ascending resource
Position indication information, interim Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Temporary Cell Radio Network
Temporary Identifier, referred to as Temporary C-RNTI) distribution.
Terminal is in a time window (RA Response window) interior receiving random access response (RAR), this time
Window agreement has clear and definite regulation, is the length (ra- of time window since the 3rd subframe after terminal has sent prefix code
ResponseWindowSize) configured by system message.After this time window receives accidental access response, terminal parsing obtains
The ascending resource position indication information of distribution, interim Cell Radio Network Temporary Identifier/Identity, Cell-RNTI etc..If do not have in this time window
RAR is received, then terminal thinks the detection failure of this Stochastic accessing prefix, prepares to initiate second of Stochastic accessing prefix transmission.
Fig. 2 is the structural representation of MAC PDU in the LTE system according to correlation technique, as shown in Fig. 2 carrying RAR matchmaker
Body Access Control (MediaAccess Control, referred to as MAC) RAR protocol Data Units (Protocol Data Unit,
Referred to as PDU) by 1 MAC header (header) and 0 or multiple MAC RAR and optional (optional) filling content
(padding) form.Wherein MAC header are by 1 retract (backoff) subheader (subheader), 0 or multiple RAR
Subheader is formed.Backoff values wherein are contained in backoff subheaders, each RAR subheader then correspond to each MAC
RAR.The effect of backoff values is the transmission for allowing the UE of random access failure not initiate second of Stochastic accessing prefix at once, and
After being to wait for a period of time (time span is from 0 to an equally distributed random value backoff values), then initiate the
The transmission of secondary Stochastic accessing prefix, access collision probability can be so reduced, reduce access congestion.
Wherein backoff subheaders are the subheaders of an optional transmission, generally only there is a situation where to access congestion in network
Under, network side can send backoff subheaders.
Fig. 3 is the schematic diagram of Backoff subheaders in MAC RARPDU in the LTE system according to correlation technique.
“E”：If " 1 ", represent there be other subheaders behind the subheader；If " 0 ", represent the subheader and be followed by
MACRAR or padding.
“T”：If " 1 ", it is backoff subheaders to represent this subheader；Otherwise, it is RAR subheaders (RAR to represent this subheader
There is no " BI " domain in head, but have " RAPID " domain, wherein placing lead code sequence number corresponding to the RAR subheaders).
“R”：Reservation bit position, 0 is arranged to, the UE of early version will not read these reservation bit positions.
“BI”：Totally 4 bit, place the sequence number of backoff values, the corresponding relation between sequence number and the backoff values of reality.
Sequence number in the correlation technique of table 1 and the mapping table between the backoff values of reality
| Sequence number (Index) | Backoff values (unit ms) |
| 0 | 0 |
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 60 |
| 6 | 80 |
| 7 | 120 |
| 8 | 160 |
| 9 | 240 |
| 10 | 320 |
| 11 | 480 |
| 12 | 960 |
| 13 | Reserved |
| 14 | Reserved |
| 15 | Reserved |
When the number of terminals quantitative change in network is more, when great amount of terminals initiates random access request simultaneously and is linked into network, network
In access lead code resource not enough situation may occur, cause a large amount of MTC terminals that access interference can occur, therefore, when
When eNB detects that network load becomes weight, the Stochastic accessing row of terminal can be broken up in time-domain by adjusting backoff values
To reduce access interference probability.
Step S106：UE, according to its instruction, is sent up after accidental access response is received on the ascending resource of distribution
Message.The upstream message is also known as Message 3 (Msg3), should wherein at least include：The unique mark (TMSI) of the terminal or
Person's random identification (Random ID), and establish reason (Establishment Cause).
Step S108：Base station receives UE upstream message, and returns to contention resolution message to the UE being successfully accessed
(Contention Resolution, also known as Msg4).Disappear if UE receives this before Conflict solving timer expiry
Breath, and confirm that the Msg4 is the desired Msg4 of UE through unpacking, it is determined that this time random access procedure success；Otherwise can not determine
Work(, UE initiate Stochastic accessing again.UE initiates Stochastic accessing again to be needed to restart from step 102.
In addition, the event of Stochastic accessing process is triggered in LTE system to be included：(1) idle (idle) state is initially accessed；
(2) RRC connection reconstructions process；(3) (HO, Handover) is switched；(4) connection status downlink data reaches；And (5) connection shape
State upstream data reaches.
The number that prefix code is sent when user equipment exceedes maximum transmission times (preambleTransMax), that is, before sending
When sewing synchronous codes number and being equal to preambleTransMax+1, this random access failure.Because the Stochastic accessing of LTE system is in matchmaker
Body Access Layer is implemented, and after random access failure, MAC layer needs to notify failure to the upper strata of user equipment.User equipment it is upper
If layer still has the demand of initiation business, MAC layer can be triggered and initiate Stochastic accessing again.
But after MTC device is introduced, due to the participation of nobody, (needed when MTC device there are data to need to send
When initiating business), the initiation Stochastic accessing that MTC device will be persistently is sent successfully up to data, and due to the number of MTC device
Substantial amounts of Radio Resource particularly random access resource will be consumed by measuring huge, numerous MTC device and repeatedly sending data, also,
If the MTC device quantity for initiating data transfer simultaneously is very big, Stochastic accessing will be caused to overload, this will cause all user equipmenies
The random access failure that (H2H equipment and MTC device) is initiated, and user equipment can also be again after this random access failure
Stochastic accessing is initiated, so that Stochastic accessing is constantly in overload, network can not recover normal condition.
In existing system there is shortcoming in the existing settlement mechanism for access-in resource congestion, it is impossible to tackles a large amount of MTC and sets
The standby short time concentrates the scene for initiating Stochastic accessing.For example, the ACB (Access Control Barring) in existing mechanism
Mechanism is to send Access Control instruction by broadcasting the message to control the access ratio of terminal and require eventually by access network elements
End carries out delay access, and its major defect is exactly that control instruction reaction and renewal speed are slow, can not tackle short time generation
Access congestion.Another Backoff (rollback) mechanism is to be passed through by access network elements to have sent Access Preamble
(preamble) a Backoff persond eixis is carried in the feedback message of terminal (with the backoff in MAC RAR PDU
Subheader is carried, and sees the explanation of foregoing backoff subheaders, and the Backoff persond eixis is assisted included in accidental access response MAC
In view data cell (Protocol Data Unit, abbreviation PDU)) cause one section of end delay that the detection of those prefixes fails
Preamble is resend after time again, so as to reduce preamble collision probabilities.Although Backoff mechanism reaction speed is very
It hurry up, but because its preamble that can only postpone to retransmit is sent, and the first preamble passed can not be controlled to send, therefore for
A large amount of MTC device short time concentrate the solution effect for initiating Stochastic accessing still undesirable.Also propose to introduce in correlation technique to divide
The Backoff of class or the ACB of classification method, terminal (such as the end of MTC type of the so-called classification aiming at new type
Terminal of end or low priority etc.) independent Backoff instructions or ACB parameters are set.But this method still can not solve
The shortcomings that certainly ACB mechanism reaction speed is slowly and Backoff mechanism can only control preamble to retransmit.
The content of the invention
Initiate the problem of Stochastic accessing can cause access-in resource overload, can not smoothly recover simultaneously for great amount of terminals and carry
Go out the present invention, therefore, it is a primary object of the present invention to provide a kind of random access control method and system, to solve above-mentioned ask
Topic.
To achieve these goals, according to an aspect of the invention, there is provided a kind of random access control method.
Included according to the random access control method of the present invention：Terminal according to the Access Control information obtained from network side,
It is determined that perform Stochastic accessing control process；Terminal is according to the access delay temporal information obtained from network side, computing relay time；
Terminal is after time delay is postponed, initiating random access procedure.
Further, terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process
Including：Terminal judges itself whether to meet the type of the terminal type identification information instruction in Access Control information, wherein terminal
Type identification information is used to indicate the type for allowing to perform the terminal of Stochastic accessing control process；If it is judged that be it is yes, then
It is determined that perform Stochastic accessing control process.
Further, terminal type identification information instruction allow perform Stochastic accessing control process terminal type by
Terminal is made an appointment with network side.
Further, terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process
Including：If do not include terminal type identification information in Access Control information, it is determined that Stochastic accessing control process is performed, wherein
Terminal type identification information is used to indicate the type for allowing to perform the terminal of Stochastic accessing control process.
Further, according to the parameter including at least one of, the type for setting terminal type identification information to indicate：Press
According to the device type of terminal；According to the tolerance of terminal-pair time；Tolerance according to the business that terminal is initiated to the time；According to
The priority of terminal；The priority for the business initiated according to terminal；Whether it is roaming terminal according to terminal；According to the packet of terminal
Mark.
Further, if the type of the terminal type identification information instruction terminal in Access Control information, terminal is only
Obtain access delay temporal information corresponding with own type.
Further, terminal obtains Access Control information by way of including one below from network side：Terminal passes through
Broadcast message from network side, obtain Access Control information；Terminal obtains access control by the dedicated signaling from network side
Information processed；Terminal obtains Access Control information by the message from medium education control unit.
Further, terminal obtains access delay temporal information by way of including one below from network side：Terminal
By the broadcast message from network side, access delay temporal information is obtained；Terminal is obtained by the dedicated signaling from network side
Take access delay temporal information；Terminal obtains access delay time letter by the message from medium education control unit
Breath；Terminal obtains access delay temporal information by the message from medium education head；Terminal passes through from Stochastic accessing
The message of media access control protocol data unit is responded, obtains access delay temporal information.
Further, terminal is obtained by the message from accidental access response media access control protocol data unit
Access delay temporal information includes：Terminal is by the rollback in accidental access response media access control protocol data unit
The Backoff times are as access delay temporal information.
Further, terminal includes according to the access delay temporal information obtained from network side, computing relay time：Terminal
Before Stochastic accessing process is triggered, access delay temporal information is repeatedly obtained from network side；The access that terminal will be obtained repeatedly
The minimum value of time delay corresponding to delay time information either maximum or average value as the time delay calculated, or
Time delay corresponding to the access delay temporal information that terminal obtains last time is as the time delay calculated.
Further, if terminal repeatedly obtains the once acquisition access delay temporal information in access delay temporal information
Failure, then the above method also includes one below：When terminal sets delay corresponding to the access delay temporal information of this acquisition
Between be zero；Terminal does not count the access delay temporal information of this acquisition.
Further, if terminal repeatedly obtains access delay temporal information and failed, terminal sets the delay calculated
Time is zero.
Further, terminal repeatedly obtains access delay before Access Control information is obtained from network side from network side
Temporal information includes one below：Terminal from network side persistently obtains access delay temporal information；Terminal is according to set in advance
Cycle obtains access delay temporal information from network side.
Further, terminal includes according to the access delay temporal information obtained from network side, computing relay time：Terminal
Before Stochastic accessing prefix first is sent, an access delay temporal information is obtained from network side；Terminal is by the access of acquisition
Time delay corresponding to delay time information is as the time delay calculated.
Further, if terminal obtains the failure of access delay temporal information, the above method also includes one below：Eventually
It is zero that end, which sets the time delay calculated,；Terminal continues to obtain access delay temporal information, and when continuously acquiring access delay
Between information failure number reach pre-determined number in the case of, the time delay for setting calculating is zero.
Further, terminal includes according to the access delay temporal information obtained from network side, computing relay time：Terminal
Sending first before Stochastic accessing prefix, according to the access delay temporal information in Access Control information continue reading times or
Access delay temporal information in person's Access Control information continues read access time and access delay time letter is repeatedly obtained from network side
Breath, wherein access delay temporal information continue reading times and are used for instruction terminal before initiating random access procedure from network side
The number of access delay temporal information is persistently read, access delay temporal information continues read access time and initiated for instruction terminal
The time span of access delay temporal information is persistently read before random access procedure from network side；Terminal connects what is repeatedly obtained
Enter the minimum value of time delay corresponding to delay time information either maximum or average value as the time delay calculated, or
Time delay corresponding to the access delay temporal information that person's terminal obtains last time is as the time delay calculated.
Further, if terminal is multiple according to the lasting reading times of access delay temporal information in Access Control information
Access delay temporal information, and the repeatedly once acquisition failure in acquisition are obtained, then the above method also includes one below：Eventually
It is zero that end, which sets time delay corresponding to the access delay temporal information of this acquisition,；Terminal continues access delay temporal information
Reading times increase by one, and in the case where the lasting reading times of access delay temporal information increase continuously and reach pre-determined number,
It is zero to set the time delay calculated.
Further, in terminal according to the access delay temporal information obtained from network side, after the computing relay time, on
Stating method also includes：Whether the time delay for judging to calculate is more than the time delay thresholding in Access Control information, wherein postponing
Time threshold is used for the delay for controlling terminal；If it is judged that it is yes, then terminal is after the time delay of Delay computing, hair
Rise random access procedure, otherwise terminal without delay initiating random access procedure.
Further, in terminal according to the access delay temporal information obtained from network side, after the computing relay time, on
Stating method also includes：Terminal calculates access delay time Dynamic gene corresponding to access delay time Dynamic gene information with calculating
Time delay product；Terminal is after time delay corresponding to delay product, initiating random access procedure.
Further, terminal obtains access delay time Dynamic gene by way of including one below from network side
Information：Terminal obtains access delay time Dynamic gene information by the broadcast message from network side；Terminal passes through from net
The dedicated signaling of network side, obtain access delay time Dynamic gene information；Terminal passes through from medium education control unit
Message, obtain access delay time Dynamic gene information；Terminal obtains access by the message from medium education head
Time delay Dynamic gene information；Terminal obtains access delay time Dynamic gene information by Access Control information.
Further, in terminal according to the access delay temporal information obtained from network side, after the computing relay time, on
Stating method also includes：Terminal determines a time delay at random between the time delay that zero-sum calculates；Terminal determines in delay
Time delay after, initiating random access procedure.
To achieve these goals, according to another aspect of the present invention, there is provided a kind of Stochastic accessing control system.
Terminal and network side are included according to the Stochastic accessing control system of the present invention, wherein terminal includes：Determining module, use
In the Access Control information that basis obtains from network side, it is determined that performing Stochastic accessing control process；Computing module, for according to from
The access delay temporal information that network side obtains, computing relay time；Initiation module, for after time delay is postponed, sending out
Play random access procedure.
The present invention quickly obtains the Access Control information of network side by terminal before Stochastic accessing is initiated, and lifts network
Side to may cause access congestion a large amount of target terminals Access Control ability, so as to avoid great amount of terminals and meanwhile initiate at random
The problem of accessing and causing access-in resource overload, can not smoothly recover, and improve the success rate of Stochastic accessing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the random access procedure based on competition in the LTE system according to correlation technique；
Fig. 2 is the structural representation of MAC PDU in the LTE system according to correlation technique；
Fig. 3 is the schematic diagram of Backoff subheaders in MAC RAR PDU in the LTE system according to correlation technique；
Fig. 4 is the flow chart of random access control method according to embodiments of the present invention；
Fig. 5 is the flow chart according to the random access control method of the preferred embodiment of the present invention two；
Fig. 6 is the structured flowchart of Stochastic accessing control system according to embodiments of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The invention provides a kind of random access control method.Fig. 4 is Stochastic accessing control according to embodiments of the present invention
The flow chart of method, as shown in figure 4, including steps S402 to step S406.
Step S402, terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process.
Step S404, terminal is according to the access delay temporal information obtained from network side, computing relay time.
Step S406, terminal is after time delay is postponed, initiating random access procedure.
In correlation technique, great amount of terminals initiates Stochastic accessing simultaneously can cause access-in resource overload, can not smoothly recover.This
In inventive embodiments, the Access Control information of network side is quickly obtained before Stochastic accessing is initiated by terminal, lifts network
Side to may cause access congestion a large amount of target terminals Access Control ability, so as to avoid great amount of terminals and meanwhile initiate at random
The problem of accessing and causing access-in resource overload, can not smoothly recover, and improve the success rate of Stochastic accessing.
Preferably, terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process bag
Include：Terminal judges itself whether to meet the type of the terminal type identification information instruction in Access Control information, wherein terminal class
Type identification information is used to indicate the type for allowing to perform the terminal of Stochastic accessing control process；If it is judged that be it is yes, then really
Surely Stochastic accessing control process is performed.
Preferably, the type for allowing to perform the terminal of Stochastic accessing control process of terminal type identification information instruction is by end
Made an appointment with network side at end.
Preferably, terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process bag
Include：If terminal type identification information is not included in Access Control information, it is determined that Stochastic accessing control process is performed, wherein eventually
End type identification information is used to indicate the type for allowing to perform the terminal of Stochastic accessing control process.
Preferably, according to the parameter including at least one of, the type for setting terminal type identification information to indicate：According to
The device type of terminal；According to the tolerance of terminal-pair time；Tolerance according to the business that terminal is initiated to the time；According to end
The priority at end；The priority for the business initiated according to terminal；Whether it is roaming terminal according to terminal；According to the packet mark of terminal
Know.
Preferably, if the type of the terminal type identification information instruction terminal in Access Control information, terminal only obtain
Take access delay temporal information corresponding with own type.
Preferably, terminal obtains Access Control information by way of including one below from network side：Terminal is by coming
The broadcast message of automatic network side, obtain Access Control information；Terminal obtains Access Control by the dedicated signaling from network side
Information；Terminal obtains Access Control information by the message from medium education control unit.
Preferably, terminal obtains access delay temporal information by way of including one below from network side：Terminal is led to
Come over the broadcast message of automatic network side, obtains access delay temporal information；Terminal is obtained by the dedicated signaling from network side
Access delay temporal information；Terminal obtains access delay temporal information by the message from medium education control unit；
Terminal obtains access delay temporal information by the message from medium education head；Terminal from Stochastic accessing by ringing
The message of media access control protocol data unit is answered, obtains access delay temporal information.
Preferably, terminal is connect by the message from accidental access response media access control protocol data unit, acquisition
Entering delay time information includes：Terminal is by the rollback Backoff in accidental access response media access control protocol data unit
Time is as access delay temporal information.
Preferably, terminal includes according to the access delay temporal information obtained from network side, computing relay time：Terminal exists
Before triggering Stochastic accessing process, access delay temporal information is repeatedly obtained from network side；Terminal prolongs the access repeatedly obtained
The minimum value of the time delay either time delay of maximum or average value as calculating, or eventually corresponding to slow temporal information
Time delay corresponding to the access delay temporal information that end obtains last time is as the time delay calculated.
Preferably, if the once acquisition access delay temporal information that terminal is repeatedly obtained in access delay temporal information is lost
Lose, then the above method also includes one below：Terminal sets time delay corresponding to the access delay temporal information of this acquisition
It is zero；Terminal does not count the access delay temporal information of this acquisition.
Preferably, if terminal repeatedly obtains access delay temporal information and failed, when terminal sets the delay calculated
Between be zero.
Preferably, terminal from network side before Access Control information is obtained, when repeatedly obtaining access delay from network side
Between information include one below：Terminal from network side persistently obtains access delay temporal information；Terminal is according to week set in advance
Phase obtains access delay temporal information from network side.
Preferably, terminal includes according to the access delay temporal information obtained from network side, computing relay time：Terminal exists
Before sending Stochastic accessing prefix first, an access delay temporal information is obtained from network side；Terminal prolongs the access of acquisition
Time delay is as the time delay calculated corresponding to slow temporal information.
Preferably, if terminal obtains the failure of access delay temporal information, the above method also includes one below：Terminal
It is zero to set the time delay calculated；Terminal continues to obtain access delay temporal information, and is continuously acquiring the access delay time
In the case that the number of information failure reaches pre-determined number, the time delay for setting calculating is zero.
Preferably, terminal includes according to the access delay temporal information obtained from network side, computing relay time：Terminal exists
Send first before Stochastic accessing prefix, according to the access delay temporal information in Access Control information continue reading times or
Access delay temporal information in Access Control information continues read access time and access delay temporal information is repeatedly obtained from network side,
The wherein lasting reading times of access delay temporal information are held for instruction terminal before initiating random access procedure from network side
Resume studies and take the number of access delay temporal information, access delay temporal information continue read access time be used for instruction terminal initiate with
The time span of access delay temporal information is persistently read before machine access procedure from network side；The access that terminal will be obtained repeatedly
The minimum value of time delay corresponding to delay time information either maximum or average value as the time delay calculated, or
Time delay corresponding to the access delay temporal information that terminal obtains last time is as the time delay calculated.
Preferably, repeatedly obtained if terminal continues reading times according to the access delay temporal information in Access Control information
Access delay temporal information, and the repeatedly once acquisition failure in acquisition are taken, then the above method also includes one below：Terminal
It is zero to set time delay corresponding to the access delay temporal information of this acquisition；Terminal persistently reads access delay temporal information
Number is taken to increase by one, and in the case where the lasting reading times of access delay temporal information increase continuously and reach pre-determined number, if
The time delay for putting calculating is zero.
Preferably, it is above-mentioned after the computing relay time in terminal according to the access delay temporal information obtained from network side
Method also includes：Whether the time delay for judging to calculate is more than the time delay thresholding in Access Control information, wherein when postponing
Between thresholding be used to control the delay of terminal；If it is judged that it is yes, then terminal is initiated after the time delay of Delay computing
Random access procedure, otherwise terminal without delay initiating random access procedure.
Preferably, it is above-mentioned after the computing relay time in terminal according to the access delay temporal information obtained from network side
Method also includes：Terminal calculates access delay time Dynamic gene corresponding to access delay time Dynamic gene information and calculating
The product of time delay；Terminal is after time delay corresponding to delay product, initiating random access procedure.
Preferably, terminal obtains access delay time Dynamic gene letter by way of including one below from network side
Breath：Terminal obtains access delay time Dynamic gene information by the broadcast message from network side；Terminal is by carrying out automatic network
The dedicated signaling of side, obtain access delay time Dynamic gene information；Terminal passes through from medium education control unit
Message, obtain access delay time Dynamic gene information；Terminal is obtained access and prolonged by the message from medium education head
Slow time Dynamic gene information；Terminal obtains access delay time Dynamic gene information by Access Control information.
Preferably, it is above-mentioned after the computing relay time in terminal according to the access delay temporal information obtained from network side
Method also includes：Terminal determines a time delay at random between the time delay that zero-sum calculates；Terminal determines in delay
After time delay, initiating random access procedure.
The implementation process of the embodiment of the present invention is described in detail below in conjunction with example.
Preferred embodiment one
This preferred embodiment one describes implementation process of the quick Stochastic accessing control technology in LTE system.
The scene of preferred embodiment one is LTE system, there is a large amount of MTC (Machine-Type in LTE cells
Communication) equipment and H2H terminals.Type of these MTC devices including tolerable delay (such as intellectual water meter, intelligence
Can ammeter) and not tolerable delayed-type (such as health monitoring instrument, move POS etc.), also including high access priority class
Type (such as fire alarm) and low access priority type (such as intellectual water meter, intelligent electric meter).
First, the lateral terminal of network, which is sent, quickly accesses control information, and the content for quickly accessing control information includes
One or more combinations of following information：
The type identification information of target terminal：If quickly accessing control information includes this information, only meet type
Terminal can carry out quickly accessing control according to control information is quickly accessed, do not meet the terminal of type then still using existing
The Access Control flow of LTE system.If quickly accessing control information does not include this information, all types of terminals are carried out
Quickly access control.The realization example of several types mark is provided below as different classifications mode：
Classify by terminal equipment type, such as 1bit flag can be set, for example, 1 represents MTC terminal, is 0
Represent H2H terminals；There can certainly be other sorting techniques, such as be divided into：H2H terminals or non-H2H terminals；
If the classification of the priority for the business initiated by terminal or terminal, such as 1bit flag can be set, 1
Normal priority terminal is represented, 0 represents low priority terminal；Or a 2bit flag is set, different value represents respectively：It is high
Priority endpoint either business, normal priority terminal or business, low priority terminal or business；
Method (some bit flag bit is set, and different values represent different classifications) ibid, may also be used for represent by
Classification of the business that terminal or terminal are initiated to the tolerance of time, by terminal whether be roaming terminal classification；
If classifying by the group character of terminal, be able to can also be incited somebody to action directly by the use of the group identification number of terminal as type identification
Group identification number is mapped as other identification numbers；
Several mode classifications can also be combined, such as：It " will classify by terminal equipment type " and " press the priority of terminal
Classification " sort merge, then form 4 types：The MTC terminal of normal priority/low priority, normal priority/low preferential
The H2H terminals of level.Same method can also be used for the combination of other mode classifications, no longer illustrate one by one here.
Before initiating Stochastic accessing, terminal from network side persistently reads the number or time span of access delay time, institute
State time span and refer to that terminal continues to read the access delay time from network side in the time span, the information will be follow-up real
Apply and illustrated in example description；
The time delay thresholding postponed before a random access for allowing terminal to judge whether, the information will be follow-up
Illustrated in embodiment description；
It is described quickly access control information sending method be：Network side passes through broadcast message or dedicated signaling or MAC
Control unit (MAC Control Element, abbreviation MAC CE) quickly accesses control information described in sending.
Wherein, can be in existing SIB (System Information by the method sent that broadcasts the message
Block, system information block) one SIB (such as SIB2) of middle selection, increase new IE (Information wherein
Element, information unit) to carry described quickly access control information；
The method sent by dedicated signaling can be in existing dedicated RRC signaling (such as RRC Connection
Reestablishment message) the new IE of middle increase, special new RRC signaling can also be increased to carry the fast quick access
Enter control information；
The method sent by MAC CE can increase a kind of new CE in existing downlink MAC CE to hold
Control information is quickly accessed described in load；
As described above, after receiving and quickly accessing control message, the terminal for meeting type can perform quick Stochastic accessing control
Process, process are as follows：
First, before Stochastic accessing is initiated, terminal obtains access delay temporal information according to setting means from network side；
Secondly, the terminal is according to described information computing relay time of acquisition, and is determined whether according to the time delay calculated
Advanced line delay before initiation Stochastic accessing；If so, initiated again after then being postponed according to the time delay calculated random
Access.
Wherein, it is described to be obtained according to setting means from network side in access delay temporal information, under setting means includes
State one of mode：
The terminal obtains once the access delay time letter only after Stochastic accessing process is triggered, then from network side
Breath；
What if terminal received quickly accesses in control information persistently reads the access delay time comprising terminal from network side
Number or time span, then terminal is only after Stochastic accessing process is triggered, and is sending first before Stochastic accessing prefix,
Multiple access delay temporal information is obtained according to described number or time span from network side again；Conversely, if terminal receives
Quickly access do not have in control information comprising terminal from network side persistently read the access delay time number or the time length
Degree, then terminal is only after Stochastic accessing process is triggered, and is obtained before Stochastic accessing prefix first is sent, then from network side
The once access delay temporal information；
The terminal before triggering Stochastic accessing process (i.e. produce triggering Stochastic accessing event before), i.e., from network
Side obtains the access delay temporal information；
Above-mentioned setting means can inform that terminal (such as increases in one of existing SIB by network side by broadcast message
Add new IE or new message field to represent which kind of setting means used), it can also be arranged in advance by network side and terminal；
In addition, the implementation method of above-mentioned mode (c) includes：
The acquisition access delay temporal information that terminal can be continued for；
Terminal obtains access delay temporal information according to certain cycle, and the cycle can notify terminal by network side
(such as by broadcast message, or dedicated signaling), can also be arranged in advance by network side and terminal, can also be by terminal voluntarily
Setting；
In LTE system, triggering the event of Stochastic accessing has 5 kinds, including：(1) idle (idle) state is initially accessed；
(2) RRC connection reconstructions process；(3) (HO, Handover) is switched；(4) connection status downlink data reaches；And (5) connection shape
State upstream data reaches.Above-mentioned (a) and (b) mode is all terminal after generating and can trigger the event of Stochastic accessing, terminal
Start to receive access delay temporal information from network side again；(c) mode is then to generate that the thing of Stochastic accessing can be triggered in terminal
Before part, access delay temporal information just is received from network side, can always receive, can also periodically receive.
Above-mentioned access delay temporal information passes through broadcast message or dedicated signaling or MAC Control Element (MAC by network side
Control Element, abbreviation MAC CE) or MAC header (MAC header) send.
Wherein, can be in existing SIB (System Information by the method sent that broadcasts the message
Block, system information block) one SIB (such as SIB2) of middle selection, increase new IE (Information wherein
Element, information unit) carry the access delay temporal information；
The method sent by dedicated signaling can be in existing dedicated RRC signaling (such as RRC Connection
Reestablishment message) the new IE of middle increase, special new RRC signaling can also be increased and prolonged to carry the access
Slow temporal information；
The method sent by MAC CE can increase a kind of new CE in existing downlink MAC CE to hold
Carry the access delay temporal information；
The method sent by MAC header can be a kind of new MAC subheaders (subheader) of increase, or utilize existing
MAC header in reservation bit position carry the access delay temporal information.
Special instruction, in existing LTE system, network side passes through " Backoff time instruction " MAC in MAC RAR PDU
Subheader (Backoffindication MAC subheader, abbreviation BI MAC subheader), network side are sent out using the subheader
Backoff time is sent (to retract identical with the implication of delay) instruction to control the terminal of preamble detection failures next time
Preamble send whether postponed and postponed how long.Notice that backoff persond eixis can not be used for controlling end
The transmission of preamble first in the random access procedure at end whether to postpone and postpone how long.
Pay special attention to：If the access delay temporal information that network side is sent is classified according to terminal (such as by terminal
Device type is classified or by tolerance classification of the terminal business that either terminal is initiated to the time or by terminal or end
Hold the priority classification for the business initiated or whether be roaming terminal classification by terminal or identify the packet mark of terminal
Know), then terminal only receives access delay temporal information corresponding with oneself type or group character.So-called classification refers to, net
Network side is that different type sends different access delay temporal informations respectively.
In the present embodiment, network side can also carry the access delay temporal information, method using backoff subheaders
Including：Directly carried with the BI domains in backoff subheaders；Or carried with the reservation bit in backoff subheaders.For
The terminal of quick Stochastic accessing control is performed, network side and terminal can arrange a different backoff sequence number and time delay
Mapping table, if for example, directly carrying time delay with the BI domains in backoff subheaders, then can continue to use existing
Table (i.e. table 1), a new table can also be used, such as：
Mapping table between the sequence number of the present invention of table 2 and the backoff values of reality
| Backoff sequence numbers (Index) | Time delay (unit ms) |
| 0 | 0 |
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 4 | 400 |
| 5 | 600 |
| 6 | 800 |
| 7 | 1200 |
| 8 | 1600 |
| 9 | 2400 |
| 10 | 3200 |
| 11 | 4800 |
| 12 | 9600 |
| 13 | Reserved |
| 14 | Reserved |
| 15 | Reserved |
If to use new table (table 2), then when the terminal for performing quick Stochastic accessing control is being initiated first
When backoff subheaders are read before preamble, backoff subheaders are understood using new table；And when the preamble of terminal is examined
Dendrometry loses, then performs the Backoff mechanism of existing LTE system, i.e., understands backoff subheaders using table 1.
In addition, for reading the BI subheaders in MAC RAR PDU, it is necessary to which explanation, existing LTE system are sending MAC
During RAR PDU, its corresponding PDCCH (physical downlink control channel) dispatch need to use one and MAC RAR PDU institutes
The associated code of corresponding Physical Random Access Channel (Physical Random Access Channel, abbreviation PRACH) comes
Carry out mask, the code be referred to as RA-RNTI (Random Access-Radio Network Temporary Identifier,
Random access radio network temporary mark), the generation method of this yard is：RA-RNTI=1+t_id+10*f_id.Wherein, t_id
For the sequence number (0≤t_id ＜ 10) of first subframe of the time and frequency zone resource shared by the PRACH, f_id is the PRACH
The frequency domain position sequence number (0≤f_id ＜ 6) of shared time and frequency zone resource.In other words, no matter whether terminal uses
PRACH sends preamble, and terminal can be according to PRACH time-frequency configuration of territory (these can be obtained from broadcast message)
To calculate corresponding RA-RNTI, and PDCCH is understood accordingly, obtain MAC RAR PDU.
Terminal after network side obtains access delay temporal information, calculates a final access according to the setting means
Time delay, computational methods are as follows：
If terminal uses above-mentioned setting means (a), i.e., only after Stochastic accessing process is triggered, then from network side obtain
The once access delay temporal information, that is to say, that terminal only obtains an access delay time, then terminal postpones this
Temporal information is as the final delay time；
If terminal uses above-mentioned setting means (b), i.e., terminal is only after Stochastic accessing process is triggered, according to described
The number or time span for reading the access delay time obtain multiple access delay temporal information from network side again, that is to say, that
Terminal obtains multiple access delay times, then terminal can have a variety of computational methods, such as：By the minimum of multiple delay time
The delay time value or average value that value or maximum or last time obtain are as the final delay time；
If terminal uses above-mentioned setting means (c), i.e., described terminal (is produced and touched before Stochastic accessing process is triggered
Before the event for sending out Stochastic accessing), i.e., obtain the access delay temporal information from network side, that is to say, that terminal obtains more
The individual access delay time, then terminal can have a variety of computational methods, such as：By the minimum value of all delay times obtained or
The delay time value or average value that person's maximum or last time obtain are as the final delay time；
Particularly, it is contemplated that reception failure, or network side be present because there is no congestion in radio communication, without
Access delay temporal information is sent, then terminal be able to not can receive, and in this case, there can be following solution party's method：
If terminal uses above-mentioned setting means (a), (i.e. only after Stochastic accessing process is triggered, then obtain from network side
Take once the access delay temporal information, that is to say, that terminal only obtains an access delay time) then there are as below methods：
If terminal obtains the failure of access delay temporal information, the final delay time is set to 0 by terminal；
If terminal obtains the failure of access delay temporal information, terminal continues to attempt to obtain access delay temporal information,
Untill successfully obtaining an access delay temporal information, if still not succeeding after increasing continuously pre-determined number N trial
Access delay temporal information is obtained, then the access delay time is set to 0 by terminal；Particularly, the pre-determined number N can be by network side
Notify terminal (such as by broadcast message, either dedicated signaling) or arranged in advance by network side and terminal；
If terminal uses above-mentioned setting means (b), (i.e. terminal is only after Stochastic accessing process is triggered, according to described
The reading access delay time number or time span obtain multiple access delay temporal information from network side again, that is,
Say that terminal obtains multiple access delay times) then there are as below methods：
If certain obtains the failure of access delay temporal information to terminal, this access delay time is set to 0 by terminal；
If certain obtains the failure of access delay temporal information to terminal, terminal increase once obtains access delay time letter
The trial of breath, untill successfully obtaining the access delay temporal information of setting number；If increase continuously pre-determined number N trial
The access delay temporal information of the setting number is not still obtained successfully afterwards, then all access delay times are set to by terminal
0；Particularly, the pre-determined number N can be notified by network side terminal (such as by broadcast message, either dedicated signaling) or
Arranged in advance by network side and terminal；
If terminal uses above-mentioned setting means (c), (i.e. described terminal (produces before Stochastic accessing process is triggered
Before the event for triggering Stochastic accessing), i.e., obtain the access delay temporal information from network side, that is to say, that terminal obtains
Multiple access delay times) then there are as below methods：
If certain obtains the failure of access delay temporal information to terminal, terminal is not believed the access delay time of this failure
Breath is included in statistics, if finally the access delay temporal information of terminal all acquisitions is failure, terminal is by the final delay time
It is set to 0；
If terminal certain obtain the failure of access delay temporal information, terminal is by the access delay temporal information of this failure
It is set to 0；
After terminal calculates the final delay time, can determine whether to accordingly before preamble is sent carry out the time prolong
Late：
If the final delay time of terminal is 0, terminal is before Stochastic accessing is initiated without delay；Otherwise terminal
The final delay time is more than 0, then terminal advanced line delay before Stochastic accessing is initiated；
It is used to allow terminal to judge whether to enter before a random access if what terminal received quickly accesses to include in control information
The time delay thresholding of row delay, if then the final delay time of terminal is initiating to connect at random less than the thresholding set, terminal
Without delay before entering；Conversely, then terminal advanced line delay before Stochastic accessing is initiated；Here the setting of thresholding is by network
Lateral root voluntarily configures according to the serious conditions of access congestion.Further, if quickly accessing in control information of receiving of terminal does not have
Comprising the time delay thresholding postponed before a random access for allowing terminal to judge whether, then think should be for terminal default
Advanced line delay before initiation Stochastic accessing
In addition, the method that terminal is postponed according to transmission of the final delay time calculated to Stochastic accessing prefix has
2 kinds：
Terminal is according to an equally distributed random value between the final delay time that 0 calculates described in come to random
The transmission of Access Preamble is postponed；
According to the final delay time calculated, the transmission to Stochastic accessing prefix postpones terminal；
In addition, it is contemplated that saving the purpose of signaling consumption, or expand the purpose of time delay controlled range, network side is also
Access delay time Dynamic gene information can be sent to terminal, such as：The factor can be a positive integer more than 1, its
Span depends on the time delay controlled range that network side wishes to have.For example, if terminal is by receiving MAC RAR PDU
In backoff values obtain time delay, and still backoff values are understood using the table 1 of existing system, due to existing
The maximums of backoff values be 960ms, in the serious occasion of access congestion, this time delay is likely to what is fallen short of,
Therefore network side can send a time delay Dynamic gene according to congestion level, and the span of the factor can be set
For [1,16), terminal is using the product of the access delay time calculated and access delay time Dynamic gene as final access
Time delay, that is to say, that most 15 times of the maximum extension of time delay can be considerably increased and adjusted to time delay
Flexibility.
The sending method of access delay time Dynamic gene information can have a variety of：Network side is by broadcast message or specially
Sent with signaling or MAC Control Element (MAC Control Element, abbreviation MAC CE) or MAC header (MAC header)
The access delay time Dynamic gene information.
Further, access delay time Dynamic gene information can also be as one of quick Stochastic accessing control information
Divide to send together.
Preferred embodiment two
Fig. 5 be according to the flow chart of the random access control method of the preferred embodiment of the present invention two, as shown in figure 5, including
Steps S501 to step S509.
Step S501, LTE FDD base station eNBs (evolved NodeB, base station) quickly access control by the transmission that broadcasts the message
Information processed, including：
(1) whether terminal class indication to delay tolerance (by classifying：1 represents the type of tolerable delay, and 0 represents not
Tolerable delayed-type), the mark is arranged to 1；
(2) before initiating Stochastic accessing, terminal from network side persistently reads 5 access delay times；
(3) time delay thresholding=100ms；
(4) access delay time Dynamic gene=10；
In addition, eNB configurations Physical Random Access Channel (Physical Random Access Channel, referred to as
PRACH) for PRACH, with setting to 0, (first subframe (each subframe 1ms length) of each radio frames (10ms length) has PRACH moneys
Source can use), using form 0 (only taking up 1 subframe), (content of above-mentioned PRACH configurations refers to 3Gpp agreements to Preamble
TS36.211)。
Step S502, the intelligent electric meter in Idle states (belong to the MTC device of delay tolerance type, below by intelligence
Ammeter is referred to as MD) read eNB (evolved NodeB, base station) send broadcast message obtain it is above-mentioned quickly access control letter
Breath and PRACH configuration informations.
Step S503, MD have UL (Uplink) data to send, it is necessary to access network, meet triggering random access procedure
Condition.
Step S504, MD judge that oneself belonging to delay tolerates type, meets the Control Cooling for quickly accessing control information, because
This execution quickly accesses control flow.
Step S505, MD obtain Backoff sequence numbers by reading the BI domains of the Backoff subheaders in MAC RAR PDU,
And corresponding backoff time values are interpreted according to table 1, as the time delay for quickly accessing control needs.Matched somebody with somebody according to PRACH
Put and understand, RAR receives window since the 3rd subframe after each PRACH, and MD is received in RAR and attempted to obtain MAC in the window time
RAR PDU。
Step S506, it is assumed that after 5 PRACH, MD only successfully obtains 4 time delays (assuming that obtaining for the first time
It is failure), be respectively：That time delay for obtaining failure is considered 0ms by 40ms, 240ms, 480ms, 960ms, MD,
MD take last time obtain delay time value, it is multiplied with time delay Dynamic gene, obtain maximum delay time=
960ms*10=9600ms.
Step S507, MD judge that 9600ms ＞ postpone thresholding 200ms, it is thus determined that needing to initiate again after being postponed at random
Access.If no more than delay thresholding, into step S509.
Step S508, MD are uniformly distributed random value according to one between taking 0~9600ms and are used as the final delay time,
And postpone the time.
Step S509, MD initiate Stochastic accessing, send preamble.
Present disclosure can also be equally applied to other needs completed by sending uplink synchronous sequence it is up just
Synchronous communication system.Such as UMTS system, the method and MAC layer flow of embodiment can also use in said system.
The embodiments of the invention provide a kind of Stochastic accessing control system, the Stochastic accessing control system can be used for realizing
Above-mentioned random access control method.Fig. 6 is the structured flowchart of Stochastic accessing control system according to embodiments of the present invention, such as Fig. 6
It is shown, including terminal 62 and network side 64, wherein terminal 62 include determining module 622, computing module 624 and initiation module 626.
Its structure is described in detail below.
Determining module 622, for according to the Access Control information obtained from network side 64, being controlled it is determined that performing Stochastic accessing
Process；Computing module 624, determining module 622 is connected to, the access delay temporal information obtained for basis from network side 64,
The computing relay time；Initiation module 626, be connected to computing module 624, for calculated in Delay computing module 624 delay when
Between after, initiating random access procedure.
Implement it should be noted that the Stochastic accessing control system described in device embodiment corresponds to above-mentioned method
Example, its concrete implementation process had carried out detailed description in embodiment of the method, will not be repeated here.
In summary, according to the abovementioned embodiments of the present invention, there is provided a kind of random access control method and system.This hair
The bright Access Control information for quickly obtaining network side before Stochastic accessing is initiated by terminal, lifting network side is to that may cause
The Access Control ability of a large amount of target terminals of congestion is accessed, causes to connect so as to avoid great amount of terminals while initiate Stochastic accessing
The problem of entering resource overload, can not smoothly recovering, and improve the success rate of Stochastic accessing.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (20)
- A kind of 1. random access control method, it is characterised in that including：Terminal is according to the Access Control information obtained from network side, it is determined that performing Stochastic accessing control process；The terminal is according to the access delay temporal information obtained from the network side, computing relay time；The terminal initiates random access procedure first after the time delay is postponed；Wherein, the terminal is according to the access delay temporal information obtained from the network side, calculates the time delay and includes：The terminal is believed before Stochastic accessing prefix first is sent according to the access delay time in the Access Control information The access delay temporal information that breath continues in reading times or the Access Control information continues read access time from the network Side repeatedly obtains the access delay temporal information, is used to indicate institute wherein the access delay temporal information continues reading times State time that terminal persistently reads the access delay temporal information before the random access procedure is initiated from the network side Number, the access delay temporal information continue read access time and are used to indicate the terminal before the random access procedure is initiated The time span of the access delay temporal information is persistently read from the network side；The terminal is by the minimum value or maximum of time delay corresponding to the access delay temporal information repeatedly obtained The access delay temporal information that either average value obtains last time as the time delay of the calculating or the terminal Time delay of the corresponding time delay as the calculating.
- 2. according to the method for claim 1, it is characterised in that terminal according to the Access Control information obtained from network side, It is determined that performing Stochastic accessing control process includes：The terminal judges itself whether to meet the type of the terminal type identification information instruction in the Access Control information, its Described in terminal type identification information be used for indicate allow to perform the Stochastic accessing control process terminal type；If it is judged that it is yes, it is determined that perform Stochastic accessing control process.
- 3. according to the method for claim 2, it is characterised in that the terminal type identification information instruction allows execution institute The type for stating the terminal of Stochastic accessing control process is made an appointment by the terminal and the network side.
- 4. according to the method for claim 1, it is characterised in that terminal according to the Access Control information obtained from network side, It is determined that performing Stochastic accessing control process includes：If do not include terminal type identification information in the Access Control information, it is determined that Stochastic accessing control process is performed, Wherein described terminal type identification information is used to indicate the type for allowing to perform the terminal of the Stochastic accessing control process.
- 5. the method according to any one of claim 2 to 4, it is characterised in that according to the ginseng including at least one of Number, the type of the terminal type identification information instruction is set：According to the device type of the terminal；According to the tolerance of the terminal-pair time；Tolerance according to the business that the terminal is initiated to the time；According to the priority of the terminal；The priority for the business initiated according to the terminal；Whether it is roaming terminal according to the terminal；According to the group character of the terminal.
- 6. according to the method for claim 1, it is characterised in that if the terminal type identification in the Access Control information Information indicates the type of the terminal, then the terminal only obtains access delay temporal information corresponding with own type.
- 7. according to the method for claim 1, it is characterised in that the terminal is by way of including one below, from institute State network side and obtain the Access Control information：The terminal obtains the Access Control information by the broadcast message from the network side；The terminal obtains the Access Control information by the dedicated signaling from the network side；The terminal obtains the Access Control information by the message from medium education control unit.
- 8. according to the method for claim 1, it is characterised in that the terminal is by way of including one below, from institute State network side and obtain the access delay temporal information：The terminal obtains the access delay temporal information by the broadcast message from the network side；The terminal obtains the access delay temporal information by the dedicated signaling from the network side；The terminal obtains the access delay temporal information by the message from medium education control unit；The terminal obtains the access delay temporal information by the message from medium education head；The terminal is obtained the access and prolonged by the message from accidental access response media access control protocol data unit Slow temporal information.
- 9. according to the method for claim 8, it is characterised in that the terminal from accidental access response media by accessing The message of control protocol data cell, obtaining the access delay temporal information includes：The terminal rings the Stochastic accessing The rollback Backoff times in media access control protocol data unit are answered as the access delay temporal information.
- 10. according to the method for claim 1, it is characterised in that the terminal is according to the access obtained from the network side Delay time information, calculating the time delay includes：The terminal repeatedly obtains the access delay temporal information before Stochastic accessing process is triggered, from the network side；The terminal is by the minimum value or maximum of time delay corresponding to the access delay temporal information repeatedly obtained The access delay temporal information that either average value obtains last time as the time delay of the calculating or the terminal Time delay of the corresponding time delay as the calculating.
- 11. according to the method for claim 10, it is characterised in that if the terminal repeatedly obtains the access delay Between the once acquisition access delay temporal information failure in information, then methods described also includes one below：It is zero that the terminal, which sets time delay corresponding to the access delay temporal information of this acquisition,；The terminal does not count the access delay temporal information of this acquisition.
- 12. according to the method for claim 10, it is characterised in that if the terminal repeatedly obtains the access delay Between information fail, then it is zero that the terminal, which sets the time delay of the calculating,.
- 13. the method according to any one of claim 10 to 12, it is characterised in that the terminal is from the network side Before obtaining the Access Control information, from the network side repeatedly obtain the access delay temporal information include it is following it One：The terminal persistently obtains the access delay temporal information from the network side；The terminal obtains access delay temporal information according to the cycle set in advance from the network side.
- 14. according to the method for claim 1, it is characterised in that the terminal is according to the access obtained from the network side Delay time information, calculating the time delay includes：The terminal obtains once the access delay time letter before Stochastic accessing prefix first is sent, from the network side Breath；The terminal is using time delay corresponding to the access delay temporal information of the acquisition as the time delay of the calculating；Wherein, if the terminal obtains the access delay temporal information failure, methods described also includes one below：It is zero that the terminal, which sets the time delay of the calculating,；The terminal continues to obtain the access delay temporal information, and is continuously acquiring the access delay temporal information failure Number reach pre-determined number in the case of, the time delay for setting the calculating is zero.
- 15. according to the method for claim 1, it is characterised in that if the terminal is according in the Access Control information Access delay temporal information continue reading times and repeatedly obtain the access delay temporal information, and described repeatedly obtain Once acquisition failure, then methods described also includes one below：It is zero that the terminal, which sets time delay corresponding to the access delay temporal information of this acquisition,；The access delay temporal information is continued reading times increase by one by the terminal, and in the access delay temporal information Continue in the case that reading times increase continuously and reach pre-determined number, the time delay for setting the calculating is zero.
- 16. according to the method any one of Claims 1-4,6 to 12,14,15, it is characterised in that in the terminal root According to the access delay temporal information obtained from the network side, after calculating the time delay, methods described also includes：Judge whether the time delay of the calculating is more than the time delay thresholding in the Access Control information, wherein described prolong Slow time threshold is used for the delay for controlling the terminal；If it is judged that it is yes, then the terminal initiates the Stochastic accessing after the time delay of the calculating is postponed Process, otherwise the terminal random access procedure is initiated without delay.
- 17. according to the method any one of Claims 1-4,6 to 12,14,15, it is characterised in that in the terminal root According to the access delay temporal information obtained from the network side, after calculating the time delay, methods described also includes：The terminal calculates access delay time Dynamic gene corresponding to access delay time Dynamic gene information and the calculating Time delay product；The terminal initiates the random access procedure after time delay corresponding to the product is postponed.
- 18. according to the method for claim 17, it is characterised in that the terminal by way of including one below, from The network side obtains the access delay time Dynamic gene information：The terminal obtains the access delay time Dynamic gene information by the broadcast message from the network side；The terminal obtains the access delay time Dynamic gene information by the dedicated signaling from the network side；The terminal obtains the access delay time Dynamic gene letter by the message from medium education control unit Breath；The terminal obtains the access delay time Dynamic gene information by the message from medium education head；The terminal obtains the access delay time Dynamic gene information by the Access Control information.
- 19. according to the method any one of Claims 1-4,6 to 12,14,15, it is characterised in that in the terminal root According to the access delay temporal information obtained from the network side, after calculating the time delay, methods described also includes：The terminal determines a time delay at random between the time delay calculated described in zero-sum；The terminal initiates the random access procedure after the time delay of the determination is postponed.
- 20. a kind of Stochastic accessing control system, it is characterised in that including terminal and network side, wherein the terminal includes：Determining module, the Access Control information obtained for basis from network side, it is determined that performing Stochastic accessing control process；Computing module, for according to the access delay temporal information obtained from the network side, computing relay time；Initiation module, for after the time delay is postponed, initiating random access procedure first；Wherein, according to the access delay temporal information obtained from the network side, calculating the time delay includes：Before Stochastic accessing prefix first is sent, persistently read according to the access delay temporal information in the Access Control information Take the access delay temporal information in number or the Access Control information to continue read access time repeatedly to obtain from the network side The access delay temporal information is taken, is used to indicate that the terminal exists wherein the access delay temporal information continues reading times The number of the access delay temporal information is persistently read before initiating the random access procedure from the network side, it is described to connect Enter delay time information and continue read access time for indicating the terminal before the random access procedure is initiated from the net Persistently read the time span of the access delay temporal information in network side；By the minimum value of time delay corresponding to the access delay temporal information repeatedly obtained either maximum or average It is worth the time delay as the calculating, or the terminal will prolong corresponding to the access delay temporal information of last time acquisition Slow time delay of the time as the calculating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110081971.XA CN102740492B (en) | 2011-04-01 | 2011-04-01 | Random access control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110081971.XA CN102740492B (en) | 2011-04-01 | 2011-04-01 | Random access control method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102740492A CN102740492A (en) | 2012-10-17 |
| CN102740492B true CN102740492B (en) | 2018-01-02 |
Family
ID=46995027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110081971.XA Active CN102740492B (en) | 2011-04-01 | 2011-04-01 | Random access control method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102740492B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096497B (en) * | 2011-11-03 | 2018-09-04 | 中兴通讯股份有限公司 | Access the method and device of control |
| GB2509071B (en) * | 2012-12-19 | 2018-07-11 | Sony Corp | Telecommunications apparatus and methods |
| CN104349476B (en) * | 2013-08-09 | 2019-09-24 | 中兴通讯股份有限公司 | Random access channel resource configuration method and system |
| WO2016183813A1 (en) * | 2015-05-20 | 2016-11-24 | 华为技术有限公司 | Mtc device access method, base station, and system |
| CN108353439B (en) * | 2015-11-09 | 2021-12-21 | 瑞典爱立信有限公司 | First network node, wireless device and method thereof for handling access requests in a wireless communication network |
| CN106954278B (en) * | 2016-01-07 | 2021-09-28 | 中兴通讯股份有限公司 | Method for determining random access wireless network temporary identifier, user equipment and base station |
| US10939362B2 (en) * | 2018-01-11 | 2021-03-02 | Mediatek Inc. | Apparatuses and methods for system information (SI) request through a contention-based random access procedure |
| EP3744126A4 (en) | 2018-02-12 | 2021-11-17 | ZTE Corporation | Methods, apparatus and systems for indicating a configuration of access control information in a wireless communication |
| WO2019192022A1 (en) * | 2018-04-06 | 2019-10-10 | Oppo广东移动通信有限公司 | Wireless communication method, terminal, and network device |
| CN110621079B (en) * | 2018-06-19 | 2021-04-13 | 维沃移动通信有限公司 | Random access resource selection method and terminal equipment |
| CN111757531A (en) * | 2019-03-27 | 2020-10-09 | 普天信息技术有限公司 | Random access backspacing method and device |
| CN113692774A (en) * | 2019-04-18 | 2021-11-23 | 株式会社Ntt都科摩 | Terminal and wireless communication method |
| CN112543464B (en) * | 2019-09-23 | 2022-09-16 | 中国移动通信集团安徽有限公司 | Network returning method and device and computing equipment |
| CN112566145A (en) * | 2019-09-25 | 2021-03-26 | 深圳市中兴微电子技术有限公司 | Congestion control method and device, computer storage medium and terminal |
| CN112689247B (en) * | 2020-12-22 | 2023-03-14 | 深圳安信卓科技有限公司 | Terminal access method and device in cluster system and computer storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427532A (en) * | 2006-04-21 | 2009-05-06 | 卢森特技术有限公司 | Method of providing access information to an access terminal |
| CN101547410A (en) * | 2008-03-24 | 2009-09-30 | 华为技术有限公司 | Method and device for transmitting alarm information |
| CN101616488A (en) * | 2008-06-23 | 2009-12-30 | 华为技术有限公司 | The control method that a kind of enhancing inserts at random, Apparatus and system |
| CN101690375A (en) * | 2008-01-31 | 2010-03-31 | Lg电子株式会社 | Method for signaling back-off information in random access |
| CN101848539A (en) * | 2009-03-25 | 2010-09-29 | 大唐移动通信设备有限公司 | Method and equipment for determining member carrier initiating random access and initiating time |
| CN101990310A (en) * | 2009-07-30 | 2011-03-23 | 华为技术有限公司 | Random access method and device thereof |
| CN102316600A (en) * | 2010-06-29 | 2012-01-11 | 中兴通讯股份有限公司 | Method, system and terminal for randomly accessing terminal |
| CN102573097A (en) * | 2010-12-22 | 2012-07-11 | 中兴通讯股份有限公司 | Method for random access and terminal |
-
2011
- 2011-04-01 CN CN201110081971.XA patent/CN102740492B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427532A (en) * | 2006-04-21 | 2009-05-06 | 卢森特技术有限公司 | Method of providing access information to an access terminal |
| CN101690375A (en) * | 2008-01-31 | 2010-03-31 | Lg电子株式会社 | Method for signaling back-off information in random access |
| CN101547410A (en) * | 2008-03-24 | 2009-09-30 | 华为技术有限公司 | Method and device for transmitting alarm information |
| CN101616488A (en) * | 2008-06-23 | 2009-12-30 | 华为技术有限公司 | The control method that a kind of enhancing inserts at random, Apparatus and system |
| CN101848539A (en) * | 2009-03-25 | 2010-09-29 | 大唐移动通信设备有限公司 | Method and equipment for determining member carrier initiating random access and initiating time |
| CN101990310A (en) * | 2009-07-30 | 2011-03-23 | 华为技术有限公司 | Random access method and device thereof |
| CN102316600A (en) * | 2010-06-29 | 2012-01-11 | 中兴通讯股份有限公司 | Method, system and terminal for randomly accessing terminal |
| CN102573097A (en) * | 2010-12-22 | 2012-07-11 | 中兴通讯股份有限公司 | Method for random access and terminal |
Non-Patent Citations (1)
| Title |
|---|
| evolved universal terrestrial radio access（E-UTRA）medium access control（MAC） protocol specification（release 8）;3GPP TS 36.321 V8.4.0;《3GPP》;20081231;第5.1.4节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102740492A (en) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102740492B (en) | Random access control method and system | |
| CN102740374B (en) | Connection control method and system | |
| US11832308B2 (en) | Method and apparatus for performing random access procedure | |
| Cheng et al. | Overload control for machine-type-communications in LTE-advanced system | |
| US11553324B2 (en) | Apparatus and method of system information transmission and reception on a carrier supporting multiple bandwidth parts | |
| CN102740493B (en) | Terminal Access Control method of adjustment and system | |
| Hasan et al. | Random access for machine-to-machine communication in LTE-advanced networks: Issues and approaches | |
| CN102404865B (en) | prioritized random access method | |
| US11737151B2 (en) | Method and apparatus for performing random access backoff in wireless communication system | |
| CN102238752B (en) | Random access control method of machine type communication (MTC) equipment and MTC equipment | |
| CN107864499B (en) | Access control method and device for user equipment | |
| AU2018390050A1 (en) | A method and an apparatus for handling a bandwidth part inactivity timer in wireless communication system | |
| US9215645B2 (en) | Controlling network accesses by radio terminals associated with access classes | |
| CN102548012B (en) | A kind of accidental access method and terminal | |
| CN102378364B (en) | Random access method and system realizing same | |
| CN107409420A (en) | Terminal installation, base station apparatus, communication means and integrated circuit | |
| US20140179293A1 (en) | Group call method and device | |
| GB2530566A (en) | Communication system | |
| CN102573097B (en) | Method for random access and terminal | |
| WO2012016538A1 (en) | Enhanced rach design for machine-type communications | |
| EP2943016A1 (en) | Coverage extension in wireless communication | |
| US20230156819A1 (en) | Method and apparatus for radio link failure reporting in wireless communication system | |
| Cheng et al. | Performance evaluation of radio access network overloading from machine type communications in LTE-A networks | |
| Toor et al. | Evolution of random access process: From Legacy networks to 5G and beyond | |
| Pan et al. | Cluster-based group paging for massive machine type communications under 5G networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |