CN105451363A - Method of random access in narrowband system, base station and user equipment - Google Patents
Method of random access in narrowband system, base station and user equipment Download PDFInfo
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- CN105451363A CN105451363A CN201410487735.1A CN201410487735A CN105451363A CN 105451363 A CN105451363 A CN 105451363A CN 201410487735 A CN201410487735 A CN 201410487735A CN 105451363 A CN105451363 A CN 105451363A
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Abstract
The invention provides a method of random access in a narrowband system, a base station and user equipment. The method comprises the steps that: the user equipment sends a random access lead code to the base station; the base station sends a first random access response carrying a user identifier and a TA value according to the random access lead code; meanwhile, the base station carries out acceptance judgment, the acceptance is successful, SR resources and the like are allocated in advance, and the base station sends a second random access response carrying a final resident frequency point, transmission resources used for establishing an RRC connection establishment request message and a power adjusting value; the user equipment sends the RRC connection establishment request message according to the received first random access response and the received second random access response; the base station sends an RRC connection establishment message carrying SR resource information to the user equipment according to the RRC connection establishment request message; and the user equipment configures the SR resources and the like according to the RRC connection establishment message. The method provided by the invention effectively increases flexibility of resource allocation, and reduces resource consumption and time delay caused by random access failure.
Description
Technical field
The present invention relates to communication technical field, be specifically related to the method for Stochastic accessing in narrowband systems, base station and subscriber equipment.
Background technology
The design of cordless communication network is limited to available band situation, for the system of distributing bandwidth continuously and on a large scale, can design all kinds of control channel and Traffic Channel more at leisure.But and band resource that each discrete available band narrower discrete for available band, how all kinds of channel of reasonable design, and how to utilize discrete narrow band resource can be more more difficult than broadband system fully.In addition, consider the Cost Problems of terminal in actual product, and the consideration of system, great amount of terminals may be there is and only support to carry out control channel in narrow bandwidth range, especially the monitoring of authorization channel and reception.Even if so narrowband systems can carry out the mode of carrier aggregation, terminal scheduling is carried out transfer of data to its any one arrowband frequency, but before scheduling, terminal still needs to specify some arrowbands frequency to carry out resident, to monitor mandate.This resident frequency needs to be configured in the random access procedure.
Due to narrowband systems frequency Bandwidth-Constrained, so single frames can carry effective information relative to very limited broadband system.As shown in Figure 1, be the schematic flow sheet of existing accidental access method, the message m sg2 in figure, msg3 and msg4 are single frame transmission, and namely each message needs end of transmission in a frame.This is limited to current random access procedure and message format, and such as msg3 and msg4 belongs to wireless chain control layer agreement (RadioLinkControl is called for short RLC) TM pattern, cannot be connected in series in RLC segmentation, so can only send by single frames.
So for narrowband systems, due configuration information to be carried in Stochastic accessing, and also will indicate corresponding resident frequency point information relative to broadband system more, so the limited bottleneck becoming the design of narrowband systems Stochastic accessing of single frame transmission amount of information.Owing to being narrowband systems, and consider terminal cost, certainly exist the terminal of a large amount of narrow-band reception abilities, can only be resident on an arrowband frequency, carry out monitoring and the reception of the authorization channel on this arrowband frequency, and in existing random access procedure, call access control is completed by the chain of command of base station after message 3, and issue result by message 4.Extra resident frequency point information will be indicated to take the expense of message 4 on the one hand, if message 4 receives refusal on the other hand, then whole random access procedure can re-start, and wastes interface-free resources, causes access delay.
Summary of the invention
For the defect of prior art, the invention provides the method for Stochastic accessing in a kind of narrowband systems, base station and subscriber equipment, issued by accidental access response substep, carry out acceptance judging on this basis, and resident frequency and transmission frequency are provided separately, improve the flexibility of Resourse Distribute, the resource consumption that minimizing random access failure brings and time delay.
First aspect, the invention provides the method for Stochastic accessing in a kind of narrowband systems, the method comprises:
The random access lead code that base station receives user equipment UE sends when accessing described base station;
According to described random access lead code, obtain the time advance adjustment amount TA value for adjusting described UE Timing Advance;
Send the first accidental access response to described UE, described first accidental access response comprises: described TA value, and the scrambling mark of described UE; And
When determining to receive described UE according to the capacity of interface-free resources in described base station, send the second accidental access response to described UE, described second accidental access response comprises: resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
Receive the RRC connection establishment request message that described UE sends, described RRC connection establishment request message is that described UE sends according to described first accidental access response and the second accidental access response;
Send RRC connection establishment message to described UE, described RRC connection establishment message comprises: described base station is the uplink scheduling request SR resource that described UE distributes, to make described UE according to described RRC connection establishment message arrangement SR resource, to access described base station.
Preferably, described method also comprises:
After described second accidental access response is sent to described UE by described base station, start first timer, until when the time receiving described RRC connection establishment request message or described first timer record is greater than set threshold value, stop described first timer;
If the time of described first timer record is greater than set threshold value, then discharge UE scrambling mark and the SR resource of distribution.
Preferably, described method also comprises:
When sending the second accidental access response in described base station to described UE, adopt the scrambling of described UE to identify and scrambling is carried out to described second accidental access response, the second accidental access response after scrambling is sent to described UE.
Second aspect, the invention provides the method for Stochastic accessing in a kind of narrowband systems, the method comprises:
UE, when access base station, sends random access lead code to described base station, obtains the TA value for adjusting described UE Timing Advance to make described base station according to described random access lead code;
Receive the first accidental access response that described base station sends, described first accidental access response is send after described base station receives described random access lead code, comprises the scrambling mark of TA value and UE;
Receive base station send the second accidental access response, described second accidental access response be described base station determining to send when can receive described UE, comprise resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
RRC connection establishment request message is sent to described base station according to described first accidental access response and the second accidental access response;
Receive the RRC connection establishment message that base station sends, described RRC connection establishment message comprises: described base station is the SR resource that described UE distributes;
According to described RRC connection establishment message arrangement thing SR resource, access described base station.
Preferably, described method also comprises:
After described UE sends described random access lead code to described base station, start second timer, until when the time receiving described second accidental access response or described second timer record is greater than set threshold value, stop described second timer;
If the time of described second timer record is greater than set threshold value, then judge random access procedure failure, UE discharges user's scrambling mark of having distributed.
Preferably, after described UE receives described first random response, using the reception frequency of described first random response transmission as interim resident frequency, the second accidental access response described in wait-receiving mode.
The third aspect, the invention provides a kind of base station, and described base station comprises:
Receiving element, for receiving the random access lead code that user equipment (UE) sends when accessing described base station;
Acquiring unit, for according to described random access lead code, obtains the TA value for adjusting described UE Timing Advance;
Transmitting element, for sending the first accidental access response to described UE, described first accidental access response comprises: described TA value, and the scrambling mark of described UE;
Transmitting element, also for after described first accidental access response of transmission, when determining to receive described UE according to the capacity of interface-free resources in described base station, send the second accidental access response to described UE, described second accidental access response comprises: resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
Receiving element, also for after described second accidental access response of transmission, receive the RRC connection establishment request message that described UE sends, described RRC connection establishment request message is that described UE sends according to described first accidental access response and the second accidental access response;
Transmitting element, also for after the described RRC connection establishment request message of reception, RRC connection establishment message is sent to described UE, described RRC connection establishment message comprises: described base station is the uplink scheduling request SR resource that described UE distributes, to make described UE according to described RRC connection establishment message arrangement SR resource, to access described base station.
Preferably, this base station also comprises:
Very first time acquiring unit, for when described second accidental access response is sent to described UE by described base station, until when the time receiving described RRC connection establishment request message or described first timer record is greater than set threshold value, stop described first timer;
First identifying unit, for when the time of described first timer record is greater than set threshold value, the UE scrambling mark that release distributes and SR resource.
Fourth aspect, the invention provides a kind of subscriber equipment, and described subscriber equipment comprises:
Transmitting element, for sending random access lead code to described base station, obtains the TA value for adjusting described UE Timing Advance to make described base station according to described random access lead code;
Receiving element, for receiving the first accidental access response that base station sends, described first accidental access response is send after described base station receives described random access lead code, comprises the response of the scrambling mark of TA value and UE;
Receiving element, also for after described first accidental access response of reception, receive the second accidental access response that base station sends, described second accidental access response be described base station determining to send when can receive described UE, comprise resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
Transmitting element, also for after described second accidental access response of reception, sends RRC connection establishment request message according to described first accidental access response and the second accidental access response to described base station;
Receiving element, also for after the described RRC connection establishment request message of transmission, receive the RRC connection establishment message that base station sends, described RRC connection establishment message comprises: described base station is that described UE distributes SR resource;
Dispensing unit, for according to described RRC connection establishment message arrangement SR resource, accesses described base station.
Preferably, described subscriber equipment also comprises:
Second time acquisition unit, for when described subscriber equipment sends described random access lead code to described base station, start second timer, until when the time receiving described second accidental access response or described second timer record is greater than set threshold value, stop described second timer;
Second identifying unit, for when the time of described second timer record is greater than set threshold value, discharges user's scrambling mark of having distributed.
As shown from the above technical solution, the invention provides the method for Stochastic accessing in a kind of narrowband systems, base station and subscriber equipment, by redesigning random access procedure, accidental access response is carried out multiple step format issue, improve the information carrying amount of accidental access response, on this basis further by acceptance judging, and by resident frequency and transmission frequency separate configuration, to improve the flexibility of Resourse Distribute, the resource consumption that minimizing random access failure brings and time delay.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these figure.
Fig. 1 is the signaling diagram of accidental access method in prior art;
Fig. 2 is the flow chart of accidental access method in the narrowband systems that provides of one embodiment of the invention;
Fig. 3 is the flow chart of accidental access method in the narrowband systems that provides of another embodiment of the present invention;
Fig. 4 is the signaling diagram of accidental access method in the narrowband systems that provides of another embodiment of the present invention;
Fig. 5 is the structural representation of a kind of base station that one embodiment of the invention provides;
Fig. 6 is the structural representation of a kind of subscriber equipment that another embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 2, Fig. 2 shows the flow chart of accidental access method in the narrowband systems that one embodiment of the invention provides, and the method comprises the steps:
Step 201: the random access lead code that base station receives user equipment UE sends when accessing described base station.
Composition graphs 1, the random access lead code in the present embodiment does not change, as the information of the msg1 in Fig. 1.Corresponding, the random access lead code in the present embodiment is the msg1 in Fig. 4.
Step 202: base station, according to described random access lead code, obtains the time advance adjustment amount TA value for adjusting described UE Timing Advance.
Step 203: base station sends the first accidental access response to described UE, described first accidental access response comprises: described TA value, and the scrambling mark of described UE.
Composition graphs 4, the first accidental access response in the present embodiment is the msg2-1 in Fig. 4.First accidental access response is produced by the MAC layer of base station, and transfers to UE by DSCH Downlink Shared Channel (DownLink-sharedChannel is called for short DL-SCH).
In the present embodiment, according to the function of transmission information, and portable amount of information, adopt substep to issue method, msg2 is divided into 2 ~ N number of sub-message to issue respectively, can solve the limited problem of transmission information amount like this.Wherein, N represents positive integer.
Owing to being narrowband systems, UE, according to the mapping relations of msg1 and msg2, determines the reception frequency of msg2, and determines according to the transmission resource of msg1 the user ID receiving msg2-1 message, i.e. RA-RNTI.Msg2-1 only carries necessary uplink synchronous adjustment TA value, and distribution T-RNTI.Terminal, using the reception frequency of msg2-1 as interim resident frequency, this frequency is that new user ID carrys out the follow-up msg2 of wait-receiving mode with T-RNTI, until receive completely all sub-message of msg2.Follow-up msg2 can carry more configuration information, comprises the resident frequency etc. that user is final.
Step 204: when base station is determined to receive described UE according to the capacity of interface-free resources in described base station, send the second accidental access response to described UE, described second accidental access response comprises: resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message.
Composition graphs 4, the second accidental access response in the present embodiment is the msg2-2 in Fig. 4.Function is received to be at the chain of command accessing base station, side, namely CP face completes, CP face determines whether to receive certain subscriber equipment to be linked into this community according to the capacity of base station interface-free resources, therefore the configuration information that in the present embodiment, the user face UP of base station is relevant with the mutual residence sub-band of chain of command CP and call access control information, complete acceptance judging in accidental access response process.After base station have received random access lead code msg1, except being limited to the temporal relation constraint between msg1 ~ msg2_1, must issue at once outside msg2_1 at stipulated time point, the MAC layer in UP face, base station also needs to inform CP face, the resource capacity information of CP face required for receiving, such as physical uplink control channel (PhysicalUplinkControlChannel, be called for short PUCCH) whether resource enough distributes, whether uplink scheduling request resource SR enough distributes carries out acceptance controlling decision, and inform the MAC layer in UP face.If resource is enough, then acceptance judging success; Otherwise acceptance judging failure, after failure, the second accidental access response msg2_2 issues and receives refusal instruction, and user equipment (UE) restarts Stochastic accessing.
Wherein, the first accidental access response msg2-1 adopts the first user mark RA-RNTI obtained according to the running time-frequency resource of the described random access lead code of transmission to carry out scrambling; Second accidental access response msg2-2 adopts T-RNTI to carry out scrambling.
In the present embodiment, issued by configuration information substep by accidental access response message, decrease the data volume that single frames carries configuration information, acceptance judging in advance simultaneously, also exempted to produce in subsequent step to receive refusal, the interface-free resources waste that the Stochastic accessing decreasing failure causes.
Step 205: base station receives the RRC connection establishment request message that described UE sends, described RRC connection establishment request message is that described UE sends according to described first accidental access response and the second accidental access response.
Composition graphs 1, the RRC connection establishment request message in the present embodiment does not change, as the information of the msg3 in Fig. 1.Corresponding, the RRC connection establishment request message in the present embodiment is the msg3 in Fig. 4.
In msg2_2, carry the resident frequency of final terminal, msg3 transmits frequency and uplink power control order TPC.Because for the distributed idling-resource transmitting msg3, might not there be enough resources that new terminal can be received resident, and have current other business of transmitting of enough resource and admission terminals resident frequency possibility, the msg3 that transmission newly accesses terminal cannot be distributed.So assigned to configure separately by the Resourse Distribute of msg3 frequency and resident frequency, the flexibility that residence sub-band distributes can be improved.And the load balancing of resident frequency point allocation can be carried out further in this stage, the resident frequency point allocation of the frequency selecting resident users minimum in all arrowbands frequency for newly accessing terminal, avoid too much terminal distribution on same frequency.
Step 206: base station sends RRC connection establishment message to described UE, described RRC connection establishment message comprises: described base station is the uplink scheduling request SR resource that described UE distributes, to make described UE according to described RRC connection establishment message arrangement SR resource, to access described base station.
Composition graphs 1, the RRC connection establishment request message in the present embodiment does not change, as the information of the msg4 in Fig. 1.Corresponding, the RRC connection establishment request message in the present embodiment is the msg4 in Fig. 4.
So after msg3 transmission, terminal then can forward on final resident frequency and monitor mandate, and receiving scheduling completes follow-up msg4, msg5 transmission.After the complete msg4 of terminal on receipt determines the success of self contention access, then T-RNTI changes into formal C-RNTI.
Alternatively, after the second accidental access response is sent to UE by base station, start first timer, until when the time receiving described RRC connection establishment request message or described first timer record is greater than set threshold value, stop described first timer, and obtain the time of now first timer record; If the time of described first timer record is greater than set threshold value, then discharge scrambling mark and the SR resource of the UE of distribution.
In the present embodiment, the message belonging to MAC layer process due to msg2 sends and receives flow process, so the program only relates to the amendment of MAC layer, does not relate to high-rise process amendment, can improve better compatibility.And MAC layer change amount only relates to the renewal in flow process, do not relate to the interpolation of segmentation and group bag module, because the sub-message of multiple msg2 can issue as multiple independently message, can have and independently process separately and generative process, and for the receiving terminal of terminal, the sub-message of each msg2 receives separately and processes, and does not need restructuring.
And issue because msg2 is divided into multiple sub-message, and issue in regular hour window, so have time enough to carry out adjudicating and generating for the information that message 2 is carried.This successful distributed for the msg3 resource and residence sub-band that improve narrowband systems is helpful.
As shown in Figure 3, Fig. 3 shows the flow chart of accidental access method in the narrowband systems that another embodiment of the present invention provides, and the method comprises the steps:
Step 301:UE, when access base station, sends random access lead code to described base station, obtains the TA value for adjusting described UE Timing Advance to make described base station according to described random access lead code.
Step 302:UE receives the first accidental access response that base station sends, and described first accidental access response is send after described base station receives described random access lead code, comprises the scrambling mark of TA value and UE.
In the present embodiment, after UE receives described first random response, transmit subband used as interim residence sub-band using the first random response.
Step 303:UE receives the second accidental access response that base station sends, described second accidental access response be described base station determining to send when can receive described UE, comprise resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message.
Step 304:UE sends RRC connection establishment request message according to described first accidental access response and the second accidental access response to described base station.
Step 305:UE receives the RRC connection establishment message that base station sends, and described RRC connection establishment message comprises: described base station is the SR resource that described UE distributes.
Step 306:UE, according to described RRC connection establishment message arrangement SR resource, accesses described base station.
Alternatively, after UE sends random access lead code to base station, start second timer, until when the time receiving described second accidental access response or described second timer record is greater than set threshold value, stop described second timer; If the time of described second timer record is greater than set threshold value, then judge random access procedure failure, discharge the scrambling mark of the UE distributed.
The method of Stochastic accessing in the narrowband systems that the present embodiment provides, by redesigning random access procedure, accidental access response is carried out multiple step format issue, improve the information carrying amount of accidental access response, on this basis further by acceptance judging, and by resident frequency and transmission frequency separate configuration, to improve the flexibility of Resourse Distribute, the resource consumption that minimizing random access failure brings and time delay.
As shown in Figure 4, Fig. 4 shows the schematic flow sheet of accidental access method in the narrowband systems that another embodiment of the present invention provides, and the method comprises the steps:
401, random access lead code preamble (msg1) is sent to base station by UE, and starts accidental access response timer.
402, after base station receives msg1, DL-SCH transmits the accidental access response (msg2-1) produced by MAC layer.Wherein, T-RNTI, TA is carried in msg2-1.Wherein, msg2-1 uses RA-RNTI to carry out scrambling.
After UE receives msg2-1, transmit subband used as interim residence sub-band using msg2-1, and wait for follow-up msg2-2 message.
403, receiving request is carried out in the notice CP face, UP face of base station.
Whether 404, CP face in base station completes acceptance judging, pass on receiving successful, if success, start and receive timer by UP face.Meanwhile, assembling msg2-2 in Up face is sent to UE.
In this step, if acceptance judging failure, CP face, base station completes acceptance judging, is passed on receive refusal by UP face, and UP face assembling msg2-2 is sent to UE, and refusal is received in msg2-2 instruction, thus random access procedure failure.
405, after UE receives msg2-2, UE configures msg3 transfer resource according to it, final resident frequency and power adjustment.Wherein, the sub-message of msg2-2 uses T-RNTI to carry out scrambling.
406, UE sends RRC connection establishment request message (msg3) to base station.
407, after base station receives the RRC connection establishment request message of UE, distribute SR and PUCCH resource, be assigned and send RRC connection establishment message (msg4) to UE.
408, after UE receives RRC connection establishment message, be configured according to it, configured backward base station and replied RRC connection setup complete message (msg5).
As shown in Figure 5, Fig. 5 shows the structural representation of a kind of base station that one embodiment of the invention provides, and this base station comprises receiving element 501, acquiring unit 502 and transmitting element 503.
Wherein, receiving element 501, for receiving the random access lead code that user equipment (UE) sends when accessing described base station.
Acquiring unit 502, for according to described random access lead code, obtains the TA value for adjusting described UE Timing Advance.
Transmitting element 503, for sending the first accidental access response to described UE, described first accidental access response comprises: described TA value, and the scrambling mark of described UE.
Transmitting element 503, also for after described first accidental access response of transmission, when determining to receive described UE according to the capacity of interface-free resources in described base station, send the second accidental access response to described UE, described second accidental access response comprises: resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message.
Receiving element 501, also for receiving the RRC connection establishment request message that described UE sends, described RRC connection establishment request message is that described UE sends according to described first accidental access response and the second accidental access response.
Transmitting element 503, also for sending RRC connection establishment message to described UE, described RRC connection establishment message comprises: described base station is the uplink scheduling request SR resource that described UE distributes, to make described UE according to described RRC connection establishment message arrangement SR resource, to access described base station.
Alternatively, this base station also comprises very first time acquiring unit and the first identifying unit.
Wherein, very first time acquiring unit, for when described second accidental access response is sent to described UE by described base station, until when the time receiving described RRC connection establishment request message or described first timer record is greater than set threshold value, stop described first timer; First identifying unit, for when the time of described first timer record is greater than set threshold value, the UE scrambling mark that release distributes and SR resource.
As shown in Figure 6, Fig. 6 shows the structural representation of a kind of subscriber equipment that another embodiment of the present invention provides, and this subscriber equipment comprises transmitting element 601, receiving element 602 and dispensing unit 603.
Wherein, transmitting element 601, for sending random access lead code to described base station, obtains the TA value for adjusting described UE Timing Advance to make described base station according to described random access lead code.
Receiving element 602, for receiving the first accidental access response that base station sends, described first accidental access response is send after described base station receives described random access lead code, comprises the response of the scrambling mark of TA value and UE.
Receiving element 602, also for receiving the second accidental access response that base station sends, described second accidental access response be described base station determining to send when can receive described UE, comprise resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message.
Transmitting element 601, also for sending RRC connection establishment request message according to described first accidental access response and the second accidental access response to described base station.
Receiving element 602, also for receiving the RRC connection establishment message that base station sends, described RRC connection establishment message comprises: described base station is the SR resource that described UE distributes.
Dispensing unit 603, for according to described RRC connection establishment message arrangement SR resource, accesses described base station.
Alternatively, this subscriber equipment also comprises the second time acquisition unit and the second identifying unit.
Wherein, second time acquisition unit, for when described subscriber equipment sends described random access lead code to described base station, start second timer, until when the time receiving described second accidental access response or described second timer record is greater than set threshold value, stop described second timer; Second identifying unit, for when the time of described second timer record is greater than set threshold value, discharges the scrambling mark of the UE distributed.
Above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that; It still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the method for Stochastic accessing in narrowband systems, it is characterized in that, the method comprises:
The random access lead code that base station receives user equipment UE sends when accessing described base station;
According to described random access lead code, obtain the time advance adjustment amount TA value for adjusting described UE Timing Advance;
Send the first accidental access response to described UE, described first accidental access response comprises: described TA value, and the scrambling mark of described UE; And
When determining to receive described UE according to the capacity of interface-free resources in described base station, send the second accidental access response to described UE, described second accidental access response comprises: resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
Receive the RRC connection establishment request message that described UE sends, described RRC connection establishment request message is that described UE sends according to described first accidental access response and the second accidental access response;
Send RRC connection establishment message to described UE, described RRC connection establishment message comprises: described base station is the uplink scheduling request SR resource that described UE distributes, to make described UE according to described RRC connection establishment message arrangement SR resource, to access described base station.
2. method according to claim 1, is characterized in that, described method also comprises:
After described second accidental access response is sent to described UE by described base station, start first timer, until when the time receiving described RRC connection establishment request message or described first timer record is greater than set threshold value, stop described first timer;
If the time of described first timer record is greater than set threshold value, then discharge scrambling mark and the SR resource of the UE of distribution.
3. method according to claim 1, is characterized in that, described method also comprises:
When sending the second accidental access response in described base station to described UE, adopt the scrambling of described UE to identify and scrambling is carried out to described second accidental access response, the second accidental access response after scrambling is sent to described UE.
4. the method for Stochastic accessing in narrowband systems, it is characterized in that, the method comprises:
UE, when access base station, sends random access lead code to described base station, obtains the TA value for adjusting described UE Timing Advance to make described base station according to described random access lead code;
Receive the first accidental access response that described base station sends, described first accidental access response is send after described base station receives described random access lead code, comprises the scrambling mark of TA value and UE;
Receive base station send the second accidental access response, described second accidental access response be described base station determining to send when can receive described UE, comprise resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
RRC connection establishment request message is sent to described base station according to described first accidental access response and the second accidental access response;
Receive the RRC connection establishment message that base station sends, described RRC connection establishment message comprises: described base station is the SR resource that described UE distributes;
According to described RRC connection establishment message arrangement thing SR resource, access described base station.
5. method according to claim 4, is characterized in that, described method also comprises:
After described UE sends described random access lead code to described base station, start second timer, until when the time receiving described second accidental access response or described second timer record is greater than set threshold value, stop described second timer;
If the time of described second timer record is greater than set threshold value, then judge random access procedure failure, discharge the scrambling mark of the UE distributed.
6. method according to claim 4, is characterized in that, after described UE receives described first random response, using the reception frequency of described first random response transmission as interim resident frequency, and the second accidental access response described in wait-receiving mode.
7. a base station, is characterized in that, described base station comprises:
Receiving element, for receiving the random access lead code that user equipment (UE) sends when accessing described base station;
Acquiring unit, for according to described random access lead code, obtains the TA value for adjusting described UE Timing Advance;
Transmitting element, for sending the first accidental access response to described UE, described first accidental access response comprises: described TA value, and the scrambling mark of described UE;
Transmitting element, also for after described first accidental access response of transmission, when determining to receive described UE according to the capacity of interface-free resources in described base station, send the second accidental access response to described UE, described second accidental access response comprises: resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
Receiving element, also for after described second accidental access response of transmission, receive the RRC connection establishment request message that described UE sends, described RRC connection establishment request message is that described UE sends according to described first accidental access response and the second accidental access response;
Transmitting element, also for after the described RRC connection establishment request message of reception, RRC connection establishment message is sent to described UE, described RRC connection establishment message comprises: described base station is the uplink scheduling request SR resource that described UE distributes, to make described UE according to described RRC connection establishment message arrangement SR resource, to access described base station.
8. base station according to claim 7, is characterized in that, this base station also comprises:
Very first time acquiring unit, for when described second accidental access response is sent to described UE by described base station, until when the time receiving described RRC connection establishment request message or described first timer record is greater than set threshold value, stop described first timer;
First identifying unit, for when the time of described first timer record is greater than set threshold value, discharges the UE scrambling mark and SR resource of having distributed.
9. a subscriber equipment, is characterized in that, described subscriber equipment comprises:
Transmitting element, for sending random access lead code to described base station, obtains the TA value for adjusting described UE Timing Advance to make described base station according to described random access lead code;
Receiving element, for receiving the first accidental access response that base station sends, described first accidental access response is send after described base station receives described random access lead code, comprises the response of the scrambling mark of TA value and UE;
Receiving element, also for after described first accidental access response of reception, receive the second accidental access response that base station sends, described second accidental access response be described base station determining to send when can receive described UE, comprise resident frequency, for setting up transfer resource and the power adjustment of RRC connection establishment request message;
Transmitting element, also for after described second accidental access response of reception, sends RRC connection establishment request message according to described first accidental access response and the second accidental access response to described base station;
Receiving element, also for after the described RRC connection establishment request message of transmission, receive the RRC connection establishment message that base station sends, described RRC connection establishment message comprises: described base station is that described UE distributes SR resource;
Dispensing unit, for according to described RRC connection establishment message arrangement SR resource, accesses described base station.
10. subscriber equipment according to claim 9, is characterized in that, described subscriber equipment also comprises:
Second time acquisition unit, for when described subscriber equipment sends described random access lead code to described base station, start second timer, until when the time receiving described second accidental access response or described second timer record is greater than set threshold value, stop described second timer;
Second identifying unit, for when the time of described second timer record is greater than set threshold value, discharges the scrambling mark of the UE distributed.
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