CN103916931B - The terminal access method of heterogeneous network, big base station, small base station, terminal and system - Google Patents
The terminal access method of heterogeneous network, big base station, small base station, terminal and system Download PDFInfo
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- CN103916931B CN103916931B CN201310002396.9A CN201310002396A CN103916931B CN 103916931 B CN103916931 B CN 103916931B CN 201310002396 A CN201310002396 A CN 201310002396A CN 103916931 B CN103916931 B CN 103916931B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of terminal access method of heterogeneous network, big base station, small base station, terminal and system, wherein, the method includes：When small base station in a dormant state enters detection state, big base station and/or the small base station being active determine detection state resource information；Terminal sets up down-going synchronous with big base station and/or the small base station being active, and knows detection state resource information；Terminal sends uplink detection signal according to detection state resource information；Big base station and/or the small base station being active determine the access base station of terminal according to uplink detection signal, and the access information of access base station is handed down into terminal；Terminal accesses access base station according to access information.Present invention saves the signaling consumption of small Base Transmitter pilot tone, the extra additional signaling overhead that small base station is polled and is measured of terminal is decreased, reduce the energy consumption of base station and terminal, improve the access efficiency of terminal-pair base station.
Description
Technical field
The present invention relates to wireless technical field in the communications field, in particular it relates to the terminal access method of heterogeneous network, big
Base station, small base station, terminal and system.
Background technology
With the development of radio network technique, heterogeneous network is occurred in that（Heterogeneous Network, hereinafter referred to as
HetNet）System, includes different wireless networks in heterogeneous network.For example, in the mobile communication network, during due to service distribution
Domain and the difference of region, in the network coverage is carried out, often have big（It is grand）Base station and small（It is micro-）The situation that base station collectively covers.
As shown in figure 1, wherein Cell A, Cell B are the big base station of wide area covering, there is provided basic service.Cell A cover
The small base stations of Cell C/D/E are had in the region of lid, the Multiple Small Cell Sites such as Cell F/G occur in the region of Cell B coverings,
Wherein big base station is not required for identical with the standard of small base station.In order to obtain the targets such as energy-conservation, the business around small base station is very
When low, the small base station in the part in Cell C/D/E/F/G can be closed；When portfolio increases, can be with selectively unlocking Cell
One or several in C/D/E/F/G.How optimal open small base station and optimal is realized in above-mentioned HetNet scenes
User's access scheme, be very complicated problem.
There are various corresponding small base station running schemes in existing 3GPP, for example：
1）Based on OAM（Network operation, management, maintenance）Scheme, big base station is low according to the small base station of information configuration of OAM
Duty cycle, in the small base station closing of low-load cycle, at other times small base station unlatching.
2）Based on IOT（Compared to the interference of thermal noise）Scheme, when big base station load exceed certain threshold value when, meeting
The small base station of notification section is opened, and carries out measurement and the feedback of up IOT, and big base station judges which is small according to the measurement result of feedback
Base station needs to open.
3）Based on UE（That is terminal）The small base station running scheme of measurement, there is three state each small base station in the program：Dormancy
State（Now stop radio-frequency transmissions）, acquisition mode（Now small Base Transmitter pilot tone, reference signal or broadcast singal enter for UE
The descending detection of row）And state of activation.
The workflow of existing scheme is：
1st, when big base station（That is macro base station）When portfolio exceedes certain thresholding, big base station initiated small base station enters detection shape
State；
2nd, small base station is in the detection descending transmission reference signal of state；
3rd, big base station sends measurement request command to UE（The standard of ability and small base station according to UE）；
4th, UE is according to the descending reference signal of measurement request measurement and then feeds back；
5th, the situation that big base station measures according to the UE for receiving determines the small base station that need to be opened.
In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：
1st, the scheme based on OAM and based on IOT is not very accurate, because not being the measurement according to up-downgoing channel.
2nd, in the scheme based on UE measurements, small base station needs to increase an acquisition mode, and under big base station all of small base station
It is required for entering the state：
A), due to needing to open radiofrequency emitting module in this condition, therefore small base station increased extra power consumption.
B) the time more difficult determination of state, is detected, oversize then small Base Transmitter power consumption is big；It is too short then due to UE energy power restrictions,
Measurement result may not be accurate.
C), because UE adds additional measurement process, increased the power consumption of UE.
3rd, all it is the base station for first judging to need to open in both above scheme, then base station enters activated state, carries out portion
The switching of point user, and new terminal access etc..That is the unlatching of small base station and the access of terminal and handoff procedure be
Independent, do not optimize fusion.
The content of the invention
The present invention is to overcome the Stochastic accessing of the unlatching of small base station in prior art and terminal cannot effective integration
Defect, according to an aspect of the present invention, proposes a kind of terminal access method of heterogeneous network.
The terminal access method of heterogeneous network according to embodiments of the present invention, including：
When small base station in a dormant state enters detection state, big base station and/or the small base station being active are true
Surely state resource information is detected；
Terminal sets up down-going synchronous with big base station and/or the small base station being active, and knows detection state resource information；
Terminal sends uplink detection signal according to detection state resource information；
Big base station and/or the small base station being active determine the access base station of terminal according to uplink detection signal, and
The access information of access base station is handed down to terminal；
Terminal accesses access base station according to access information.
The present invention is to overcome the Stochastic accessing of the unlatching of small base station in prior art and terminal cannot effective integration
Defect, according to another aspect of the present invention, proposes a kind of terminal access system of heterogeneous network.
The terminal access system of heterogeneous network according to embodiments of the present invention, including：
Big base station, for when small base station in a dormant state enters detection state, it is determined that detection state resource information, according to
Uplink detection signal determines the access base station of terminal, and the access information of access base station is handed down into terminal；And/or,
The small base station being active, for when small base station in a dormant state enters detection state, it is determined that detection
State resource information, the access base station of terminal is determined according to uplink detection signal, and the access information of access base station is handed down into institute
State terminal；
Terminal, for setting up down-going synchronous with big base station and/or the small base station being active, knows detection state resource
Information, uplink detection signal is sent according to detection state resource information, and access base station is accessed according to access information.
The present invention is to overcome the Stochastic accessing of the unlatching of small base station in prior art and terminal cannot effective integration
Defect, according to another aspect of the present invention, proposes a kind of big base station of heterogeneous network.
The big base station of heterogeneous network according to embodiments of the present invention, including：
Information determination module, for when small base station in a dormant state enters detection state, it is determined that detection state resource letter
Breath；
Base station determining module, the uplink detection signal for being sent according to terminal determines the access base station of terminal；
Information issues module, for the access information of access base station to be handed down into terminal.
The present invention is to overcome the Stochastic accessing of the unlatching of small base station in prior art and terminal cannot effective integration
Defect, according to another aspect of the present invention, proposes a kind of small base station being active of heterogeneous network.
The small base station being active of heterogeneous network according to embodiments of the present invention, including：
Information determination module, for when small base station in a dormant state enters detection state, it is determined that detection state resource letter
Breath；
Base station determining module, the uplink detection signal for being sent according to terminal determines the access base station of terminal；
Information issues module, for the access information of access base station to be handed down into terminal.
The present invention is to overcome the Stochastic accessing of the unlatching of small base station in prior art and terminal cannot effective integration
Defect, according to another aspect of the present invention, proposes a kind of terminal of heterogeneous network.
The terminal of heterogeneous network according to embodiments of the present invention, including：
Module synchronously is set up, for setting up down-going synchronous with big base station or the small base station being active；
Signal transmitting module, for knowing detection state resource information, uplink detection letter is sent according to detection state resource information
Number；
Base station AM access module, for accessing access base station according to the access information of optimal access base station.
The terminal access method of heterogeneous network of the present invention, big base station, small base station, terminal and system, by big base station and small
Base station determines that identical detects state resource information, can accurate measuring terminals up channel so that optimal decision unlatching
And optimal access base station is accessed, and the signaling consumption of small Base Transmitter pilot tone is saved, decrease terminal extra to small base station
The additional signaling overhead for being polled and measuring, reduces the energy consumption of base station and terminal, improves the access effect of terminal-pair base station
Rate.
The terminal access method and system of heterogeneous network of the present invention, terminal down-going synchronous first to the most strong base station of signal,
Then uplink synchronous effectively melt the unlatching of the small base station of dormancy and being initially accessed for terminal with handoff procedure to optimal base station
Altogether so that the terminal being initially accessed disposably accesses optimal base station, the terminal of switching can also disposably be switched to most
Good base station.
Other features and advantages of the present invention will be illustrated in the following description, also, the partly change from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with reality of the invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of HetNet systems in the prior art；
Fig. 2 is the schematic flow sheet of the terminal access method of heterogeneous network of the present invention；
Fig. 3 is the structural representation of the terminal access system of heterogeneous network of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the invention is described in detail, it is to be understood that guarantor of the invention
Shield scope is not limited by specific embodiment.
Basic assumption of the invention：
1st, big base station（That is macro base station）Coverage is more than small base station（That is micro-base station）, big base station is always on, small base station
Running status is adjusted according to service dynamic.
2nd, the running status of small base station includes：Dormant state, detection state and activated state, do not have business or business demand very low
When, small base station is in dormant state；According to certain trigger condition, small base station switchs to detect state from dormant state, and small base station is in detection
State can be with the uplink reference signals of receiving terminal, it is also possible to send downlink reference signal；If the demand of business is sufficiently large, small base
Standing can switch to activated state from detection state.
3rd, in GSM（Hereinafter referred to as system）In, the base station of above-mentioned different running statuses can exist simultaneously.
In the present invention, size base station judges whether the small base station for needing to open dormancy, part according to the portfolio of itself
Small base station enters detection state；The terminal that there is the system that is initially accessed in systems and the terminal for needing switching, for the terminal,
Big base station and small base station（In detection state or activated state）Optimal access base station is determined through consultation.The purpose of the present invention is exactly to make
The effective fusion of unlatching and switching of dormancy base station is got up, and the terminal being initially accessed disposably is accessed optimal access base station, is cut
The terminal changed disposably accesses optimal access base station.
In the present invention, the Stochastic accessing of terminal includes situations below：
1st, the State Transferring from RRC-IDLE state to RRC-CONNECT, i.e. RRC connection procedures, be for example initially accessed and
TAU（Tracking area update, service area updates) update；
2nd, being initially accessed after Radio Link Failure, i.e. RRC connection reconstructions process；
3rd, in RRC-CONNECTED states, though not obtaining uplink synchronous need to send upstream data and control information or not
Uplink loss but need by Stochastic accessing application ascending resource；
4th, in RRC-CONNECTED states, Target cell is switched to from Serving cell；
5th, in RRC-CONNECTED states, uplink synchronous are not obtained but downlink data need to be received；
6th, in RRC-CONNECTED states, UE location aided rebroadcasts positioning needs, and network obtains time advance using Stochastic accessing
Amount（TA:Timing Advance）.
According to embodiment, the invention discloses a kind of terminal access method of heterogeneous network, as shown in Fig. 2 including：
Step 1, big base station and/or the small base station being active judge whether to need to open according to the portfolio of itself
The small base station of dormancy, when portfolio is more than respective thresholding, big base station and/or small base station pass through X2 interface or other interfaces
Sent to small base station in a dormant state and open signaling；
Step 2, after the small base station of dormancy receives unlatching signaling, into detection state, for receiving upstream terminal signal；
Step 3, big base station and/or the small base station being active determine identical detection state resource letter through consultation
Breath, including：Detection state time resource, uplink detection signal resource（Time, frequency resource that such as detectable signal takes）And spy
Signal is surveyed, wherein, detectable signal can access signal for uplink random；
Step 4, it is necessary to the downlink synchronous signal and broadcast channel of the neighbouring peripheral base station of terminal detection of Stochastic accessing, and most
The strong corresponding base station of downstream signal（BS1）Down-going synchronous are carried out, while being selected from the base station for having permission access and recording top n
Most strong downlink synchronous signal, and the method for synchronization（Frequency, time synchronized parameter etc.；
It should be noted that above-mentioned BS1 both can be big base station, or small base station.
All terminals are informed in step 5, all of big base station and/or the small base station being active by broadcast mode
（Terminal including needing Stochastic accessing）The distribution feelings of detection state time resource, uplink detection signal resource and detectable signal etc.
Condition；
Step 6 is, it is necessary to the terminal of Stochastic accessing is in detection state resource set in advance（Such as the spy that terminal in step 5 is obtained
Survey state time resource, uplink detection signal resource and detectable signal）Upper transmission uplink detection signal, uplink detection signal is included most
The strong corresponding base station IDs of N number of descending synchronous signal channel；
Step 7, the small base station in detection state receives uplink detection signal in above-mentioned resource set in advance, and should
Uplink detection signal is sent in big base station and the small base station that is active；
Step 8, big base station and/or the small base station being active are held consultation simultaneously according to the uplink detection signal for receiving
Judge optimal access base station BSbest；
In step 8, big base station and/or the small base station that is active are according to the respective uplink detection signal for receiving
Intensity judges optimal access base station：If it exceeds certain threshold value, then it is assumed that the base station possibly as optimal access base station, while
With reference to the utilization of resources situation of each base station, the strong base station of such as upward signal may not have remaining resource to access the terminal, eventually
Whether end has permission the situations such as access, judges which base station is optimal access base station.
Step 9, BS1 informs that the ID of the optimal access base station of terminal, Msg2 include by the Msg2 of Stochastic accessing：It is optimal to access
The up parameter adjustment information in base station and optimal access base station distribute to the ascending resource information of terminal, and upper line parameter includes：Power,
Frequency and time；
It should be noted that the optimal access base station in above-mentioned steps 8 and 9 had both been probably big base station, it is also possible to small base
Stand, small base station had both been probably the small base station in detection state, it is also possible to the small base station being active；
Step 10, if optimal access base station is small base station, big base station notifies the small base station（Optimal access base station）Into
Activated state；
Step 11, terminal completes descending and up synchronous with BSbest according to the Msg2 of BS1；
Step 12, terminal sends Msg3 to BSbest；
Step 13, BSbest sends Msg4 to terminal, completes the access of network system.
In above-mentioned steps 11-13, the implication of Msg1-Msg4 is as follows（Referring to table 1）：
Msg1：Preamble yards is sent, Msg1 is carried on PRACH；
Msg2：That is accidental access response, Msg2 and is carried by the MAC layer tissue of eNB by DL_SCH.One Msg2 can be same
When response multiple UE random access request, eNB is addressed, RA-RNTI using PDCCH scheduling Msg2 by RA-RNTI
By carry Msg1 PRACH running time-frequency resources position determines, Msg2 comprising uplink Timing Advance, for Msg3 distribute it is up
Resource, interim C-RNTI etc.；
Msg3：That is first time scheduled transmission, UE transmits Msg3, pin after Msg2 is received on the ascending resource that it is distributed
To different scenes, Msg3 includes different contents:
1) it is initially accessed：Carry the RRC connection request of rrc layer generation, S-TMSI or random number comprising UE；
2) connection reconstruction：Carry the RRC connection reconstructions request of rrc layer generation, C-RNTI and PCI；
3) switch：The RRC handoff completion messages of transmission rrc layer generation and the C-RNTI of UE；
4) uplink/downlink data are reached：Transmit the C-RNTI of UE.
Msg4：That is contention resolved.
Table 1
The terminal access method of heterogeneous network of the present invention, determines that identical detects state resource and believes by big base station and small base station
Breath, can accurate measuring terminals up channel, so as to optimal decision unlatching and access optimal access base station, save
The signaling consumption of small Base Transmitter pilot tone, decreases the extra extra signaling that small base station is polled and is measured of terminal and opens
Pin, reduces the energy consumption of base station and terminal, improves the access efficiency of terminal-pair base station.
The terminal access method of heterogeneous network of the present invention, terminal down-going synchronous first to the most strong base station of signal, Ran Houshang
Row is synchronized to optimal base station, and the unlatching of the small base station of dormancy and being initially accessed for terminal have effectively been merged with handoff procedure
Come so that the terminal being initially accessed disposably accesses optimal base station, the terminal of switching can also disposably be switched to optimal
Base station.
As shown in figure 3, the structural representation of the terminal access system for heterogeneous network of the present invention, including：
Big base station 10, for when small base station in a dormant state enters detection state, it is determined that detection state resource information, root
The access base station of terminal is determined according to uplink detection signal, and the access information of access base station is handed down to terminal 30；And/or,
The small base station 20 being active, for when small base station in a dormant state enters detection state, it is determined that visiting
State resource information is surveyed, the access base station of terminal is determined according to uplink detection signal, and the access information of access base station is handed down to
Terminal 30；
Terminal 30, for setting up down-going synchronous with big base station and/or the small base station being active, knows detection state money
Source information, uplink detection signal is sent according to detection state resource information, and access base station is accessed according to access information.
Wherein：Big base station and/or the small base station being active determine the access base of terminal according to uplink detection signal
It is optimal access base station to stand.
Wherein：Terminal 30, down-going synchronous are set up specifically for strongest access base station corresponding with most strong downstream signal.
Wherein：Big base station 10, specifically for determining identical detection state time resource information, uplink detection signal resource letter
Breath and detectable signal information；And/or,
The small base station 20 being active, specifically for determining identical detection state time resource information, uplink detection
Signal resource information and detectable signal information.
Wherein：Terminal 30 is the terminal of Stochastic accessing.
Wherein：System also includes：Small base station 40 in detection state, for receiving uplink detection signal, and by up spy
Signal is surveyed to be sent in big base station and/or the small base station that is active.
Wherein：The access information of access base station includes：Up parameter adjustment information and the access base station distribution of access base station
To the ascending resource information of terminal.
According to embodiments of the present invention, a kind of big base station of heterogeneous network is disclosed, including：
Information determination module, for when small base station in a dormant state enters detection state, it is determined that detection state resource letter
Breath；
Base station determining module, the uplink detection signal for being sent according to terminal determines the access base station of terminal；
Information issues module, for the access information of access base station to be handed down into terminal.
Wherein：Base station determining module determines that the access base station of terminal is optimal access base station.
Wherein：Information determination module, specifically for determining identical detection state time resource information, uplink detection signal money
Source information and detectable signal information.
Wherein：The access information of access base station includes：Up parameter adjustment information and the access base station distribution of access base station
To the ascending resource information of terminal.
According to embodiments of the present invention, a kind of small base station being active of heterogeneous network is disclosed, including：
Information determination module, for when small base station in a dormant state enters detection state, it is determined that detection state resource letter
Breath；
Base station determining module, the uplink detection signal for being sent according to terminal determines the access base station of terminal；
Information issues module, for the access information of access base station to be handed down into terminal.
Wherein：Base station determining module determines that the access base station of terminal is optimal access base station.
Wherein：Information determination module, specifically for determining identical detection state time resource information, uplink detection signal money
Source information and detectable signal information.
Wherein：The access information of access base station includes：Up parameter adjustment information and the access base station distribution of access base station
To the ascending resource information of terminal.
According to embodiments of the present invention, a kind of terminal of heterogeneous network is disclosed, including：
Module synchronously is set up, for setting up down-going synchronous with big base station or the small base station being active；
Signal transmitting module, for knowing detection state resource information, uplink detection letter is sent according to detection state resource information
Number；
Base station AM access module, for accessing access base station according to the access information of access base station.
Wherein：The access base station that base station AM access module is accessed is optimal access base station.
Wherein：Module synchronously is set up, sets up descending same specifically for strongest access base station corresponding with most strong downstream signal
Step.
Wherein：Terminal is the terminal of Stochastic accessing.
Wherein：The access information of access base station includes：Up parameter adjustment information and the access base station distribution of access base station
To the ascending resource information of terminal.
The big base station of heterogeneous network of the present invention, small base station, terminal and terminal access system, it is true by big base station and small base station
Determine identical detection state resource information, can accurate measuring terminals up channel, so as to optimal decision unlatching and connect
Enter optimal access base station, save the signaling consumption of small Base Transmitter pilot tone, decrease terminal and road wheel additionally is entered to small base station
The additional signaling overhead ask and measure, reduces the energy consumption of base station and terminal, improves the access efficiency of terminal-pair base station.
The big base station of heterogeneous network of the present invention, small base station, terminal and terminal access system, terminal down-going synchronous first to letter
Number most strong base station, then uplink synchronous are to optimal base station, being initially accessed the unlatching of the small base station of dormancy and terminal and cutting
Change process effectively to merge so that the terminal being initially accessed disposably accesses optimal base station, and the terminal of switching can also
Disposably it is switched to optimal base station.
The present invention can have the specific embodiment of various multi-forms, above by taking Fig. 2-Fig. 3 as an example with reference to accompanying drawing to this hair
The explanation for example of bright technical scheme, this is not meant to that the instantiation that the present invention is applied can only be confined to specific flow
Or in example structure, one of ordinary skill in the art is it is to be appreciated that specific embodiment presented above is various
Some examples in its preferred usage, the implementation method of any embodiment the claims in the present invention all should be wanted in technical solution of the present invention
Ask within the scope of protection.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention
Within protection domain.
Claims (28)
1. a kind of terminal access method of heterogeneous network, it is characterised in that including：
When small base station in a dormant state enters detection state, big base station and/or the small base station being active determine to visit
State resource information is surveyed, the detection state resource information includes：Detection state time resource information, uplink detection signal resource information and
Detectable signal information；
Terminal sets up down-going synchronous with the big base station and/or the small base station being active, and knows the detection state resource
Information；
The terminal sends uplink detection signal according to the detection state resource information；
The big base station and/or the small base station being active determine the access of the terminal according to the uplink detection signal
Base station, and the access information of the access base station is handed down to the terminal；
The terminal accesses the access base station according to the access information.
2. method according to claim 1, it is characterised in that the big base station and/or the small base station being active
Determine that the access base station of the terminal is optimal access base station according to the uplink detection signal.
3. method according to claim 1, it is characterised in that the terminal and big base station and/or be active
The step of down-going synchronous are set up in small base station includes：Terminal strongest access base station corresponding with most strong downstream signal is set up descending same
Step.
4. method according to claim 1, it is characterised in that
The step of big base station and/or the small base station being active determine detection state resource information includes：
The big base station and/or the small base station being active determine identical detection state time resource information, uplink detection
Signal resource information and detectable signal information.
5. method according to claim 4, it is characterised in that the detectable signal information includes that uplink random accesses signal
Information.
6. method according to claim 1, it is characterised in that sent according to the detection state resource information in the terminal
In the step of uplink detection signal, the terminal is the terminal of Stochastic accessing.
7. method according to claim 1, it is characterised in that also include：Small base station in detection state receives up spy
Survey in signal, and the small base station that the uplink detection signal is sent to big base station and/or is active.
8. the method according to any one in claim 1-7, it is characterised in that the access information bag of the access base station
Include：The up parameter adjustment information and access base station of access base station distribute to the ascending resource information of terminal.
9. the terminal access system of a kind of heterogeneous network, it is characterised in that including：
Big base station, for when small base station in a dormant state enters detection state, it is determined that detection state resource information, according to up
Detectable signal determines the access base station of terminal, and the access information of the access base station is handed down into the terminal, the detection
State resource information includes：Detection state time resource information, uplink detection signal resource information and detectable signal information；And/or,
The small base station being active, for when small base station in a dormant state enters detection state, it is determined that detection state money
Source information, the access base station of terminal is determined according to uplink detection signal, and the access information of the access base station is handed down into institute
State terminal；
Terminal, for setting up down-going synchronous with the big base station and/or the small base station being active, knows the detection state
Resource information, uplink detection signal is sent according to the detection state resource information, and the access is accessed according to the access information
Base station.
10. system according to claim 9, it is characterised in that the big base station and/or the small base station being active
Determine that the access base station of terminal is optimal access base station according to uplink detection signal.
11. systems according to claim 9, it is characterised in that the terminal, specifically for corresponding with most strong downstream signal
Strongest access base station set up down-going synchronous.
12. systems according to claim 9, it is characterised in that the big base station, specifically for determining identical detection state
Time resource information, uplink detection signal resource information and detectable signal information；And/or,
The small base station being active, specifically for determining identical detection state time resource information, uplink detection letter
Number resource information and detectable signal information.
13. systems according to claim 9, it is characterised in that the terminal is the terminal of Stochastic accessing.
14. systems according to claim 9, it is characterised in that also include：
Small base station in detection state, for receiving uplink detection signal, and is sent to big base station by the uplink detection signal
And/or in the small base station being active.
15. system according to any one in claim 9-14, it is characterised in that the access information of the access base station
Including：The up parameter adjustment information and access base station of access base station distribute to the ascending resource information of terminal.
A kind of big base station of 16. heterogeneous networks, it is characterised in that including：
Information determination module, for when small base station in a dormant state enters detection state, it is determined that detection state resource information, institute
Stating detection state resource information includes：Detection state time resource information, uplink detection signal resource information and detectable signal information；
Base station determining module, the uplink detection signal for being sent according to terminal determines the access base station of terminal；
Information issues module, for the access information of the access base station to be handed down into the terminal.
17. big base stations according to claim 16, it is characterised in that the base station determining module determines that the described of terminal connects
Enter base station for optimal access base station.
18. big base stations according to claim 16, it is characterised in that described information determining module, specifically for determining phase
Detection state time resource information together, uplink detection signal resource information and detectable signal information.
19. big base stations according to claim 16, it is characterised in that the access information of the access base station includes：Access
The up parameter adjustment information and access base station of base station distribute to the ascending resource information of terminal.
A kind of small base station being active of 20. heterogeneous networks, it is characterised in that including：
Information determination module, for when small base station in a dormant state enters detection state, it is determined that detection state resource information, institute
Stating detection state resource information includes：Detection state time resource information, uplink detection signal resource information and detectable signal information；
Base station determining module, the uplink detection signal for being sent according to terminal determines the access base station of terminal；
Information issues module, for the access information of the access base station to be handed down into the terminal.
21. small base stations according to claim 20, it is characterised in that the base station determining module determines that the described of terminal connects
Enter base station for optimal access base station.
22. small base stations according to claim 20, it is characterised in that described information determining module, specifically for determining phase
Detection state time resource information together, uplink detection signal resource information and detectable signal information.
23. small base stations according to claim 20, it is characterised in that the access information of the access base station includes：Access
The up parameter adjustment information and access base station of base station distribute to the ascending resource information of terminal.
A kind of 24. terminals of heterogeneous network, it is characterised in that including：
Module synchronously is set up, for setting up down-going synchronous with big base station or the small base station being active；
Signal transmitting module, for knowing detection state resource information, uplink detection letter is sent according to the detection state resource information
Number, the detection state resource information includes：Detection state time resource information, uplink detection signal resource information and detectable signal letter
Breath；
Base station AM access module, for accessing the access base station according to the access information of access base station.
25. terminals according to claim 24, it is characterised in that the access base station that the base station AM access module is accessed is for most
Good access base station.
26. terminals according to claim 24, it is characterised in that module is set up in the synchronization, specifically for it is most strong under
Down-going synchronous are set up in the corresponding strongest access base station of row signal.
27. terminals according to claim 24, it is characterised in that the terminal is the terminal of Stochastic accessing.
28. terminal according to any one in claim 24-27, it is characterised in that the access letter of the access base station
Breath includes：The up parameter adjustment information and access base station of access base station distribute to the ascending resource information of terminal.
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| CN104244321A (en) * | 2014-09-19 | 2014-12-24 | 京信通信系统（中国）有限公司 | Cell energy saving and awakening method and device |
| CN106211342B (en) * | 2015-04-30 | 2019-06-14 | 中国移动通信集团公司 | A kind of small cell accessing method and terminal, base station |
| CN105979594B (en) * | 2016-06-07 | 2019-07-05 | 北京邮电大学 | A kind of accidental access method and device based on resource allocation |
| CN110313203A (en) * | 2016-12-27 | 2019-10-08 | 株式会社Ntt都科摩 | User terminal and wireless communications method |
| JP2020530725A (en) | 2017-08-11 | 2020-10-22 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | Data transmission method and device |
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| CN101632321A (en) * | 2007-06-12 | 2010-01-20 | 夏普株式会社 | Base station device, mobile station device, program, uplink synchronization request method, and synchronization shift measurement signal transmission method |
| EP2403311A1 (en) * | 2009-02-26 | 2012-01-04 | China Mobile Communications Corporation | Random access control method, system and device |
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| CN101632321A (en) * | 2007-06-12 | 2010-01-20 | 夏普株式会社 | Base station device, mobile station device, program, uplink synchronization request method, and synchronization shift measurement signal transmission method |
| EP2403311A1 (en) * | 2009-02-26 | 2012-01-04 | China Mobile Communications Corporation | Random access control method, system and device |
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