CN103826318B - Macro base station and micro base station combined random access method and equipment - Google Patents
Macro base station and micro base station combined random access method and equipment Download PDFInfo
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- CN103826318B CN103826318B CN201410038315.5A CN201410038315A CN103826318B CN 103826318 B CN103826318 B CN 103826318B CN 201410038315 A CN201410038315 A CN 201410038315A CN 103826318 B CN103826318 B CN 103826318B
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Abstract
The invention discloses a macro base station and micro base station combined random access method and equipment. The method comprises steps: UE (user equipment) carried out a competition-based random access process on a macro base station and a random access preamble used in the competition-based random access on the macro base station by the UE is stored; after the UE finishes the random access process on the macro base station, the UE uses the random access preamble to initiate random access to a micro base station, and a random access response message is generated by the micro base station; and when the UE receives the random access response message from the micro base station and after the random access response message is received, the random access process on the micro base station can be ensured to be finished by the UE. In the embodiment of the invention, the macro base station and the micro base station are combined in the random access process, an Xn interface is made full use of for information interaction, the random access process between the UE and the micro base station can be prevented from fully repeating the random access process between the UE and the macro base station, the random access process is simplified, and the time and resources of the random access process are saved.
Description
Technical field
The present invention relates to data communication technology field, more particularly, to a kind of random access procedure in MAC layer control
In, by macro base station and the united accidental access method of micro-base station and equipment.
Background technology
Random access procedure refers to MAC（Media Access Control, medium access control）One work(of layer control
Can, in RRC（Radio Resource Control, wireless heterogeneous networks）The UE of idle condition（User Equipment's,
User equipment）, can be set up with network side by random access procedure and be connected, i.e. UE is first by the Stochastic accessing based on competition
Process sets up RRC connections, is connection status by idle state transition, then sets up the connection of data communication, proceeds by data
Communication.Further, in macro base station and the micro-base station heterogeneous network that deployment and UE are only connected with micro-base station foundation list RRC jointly
In, when UE is within the coverage of micro-base station and macro base station, UE carried out first on macro base station based on competition with
Machine access procedure, carries out the random access procedure based on competition in micro-base station afterwards.
As shown in figure 1, the random access procedure based on competition that UE is carried out specifically may comprise steps of：
Step 101, macro base station sends broadcast message.Wherein, carried in the broadcast message of transmission and can be used for contention access
Random access guiding group, the random access guiding that will can be used for contention access notified to UE.
Step 102, UE sends random access code and sends message Msg1 to macro base station.Wherein, UE from macro base station broadcast can
For randomly choosing a random access guiding in the random access guiding group of contention access, and initiated in random access time slot
Stochastic accessing, i.e., send Msg1 using the random access guiding and random access time slot of selection, and the Msg1 is Stochastic accessing
Code sends message.Wherein, during multiple UE selections identical random access time slot and random access guidings, it may occur that conflict.
Step 103, macro base station generates the accidental access response message Msg2 of MAC layer after the Msg1 for receiving UE transmissions, and
Accidental access response message Msg2 is sent to UE, the content carried in the Msg2 includes：The corresponding random access guiding marks of Msg1
Knowledge, clock Advanced information, ascending resource mandate（It is used for subsequent upstream transmission resource allocation）, interim C-RNTI（Cell
Radio Network Temporary Identity, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI）.Further, UE is by monitoring
PDCCH（Physical Downlink Control Channel, Physical Downlink Control Channel）RA-RNTI（Random
Radio Network Temporary Identity, random access radio network temporary mark）To receive Msg2.
Step 104, UE sends uplink message Msg3 according to the ascending resource mandate carried in Msg2 to macro base station, its
Include RRC connection request message, and Msg3 is transmitted by CCCH CCCH.Included in RRC connection request message
NAS（Non Access Stratum, Non-Access Stratum）The UE marks of layer（Such as S-TMSI（Temporary Mobile
Subscriber Identity, temporary mobile subscriber identity）Or a random number）.Further, UE is sending
Contention resolved timer can be started after Msg3.
Step 105, macro base station sends contention resolution message using the PDCCH that the interim C-RNTI in Msg2 is scrambled to UE
Msg4.Wherein, comprising UE contention resolveds mark MAC CE in the content of the Msg4（Control Element, control unit）, and
That included in the MAC CE is the CCCH SDU of transmission in Msg3（That is RRC connection request message）.If after UE decodings Msg4, hair
Now wherein MAC CE and the CCCH SDU matchings from the transmission in Msg3, then complete contention resolved, and random with macro base station connects
Enter successfully, now interim C-RNTI upgrades to formal C-RNTI.If it does not match, initiating Stochastic accessing again.
Step 106, micro-base station is to UE broadcast messages of the broadcast with random access guiding group.
Step 107, UE sends random access code and sends message Msg1 to micro-base station.
Step 108, micro-base station sends accidental access response message Msg2 to UE.
Step 109, UE sends uplink message Msg3 to micro-base station.
Step 110, micro-base station sends contention resolution message Msg4 to UE.
Obviously, in aforesaid way, UE repeats UE and is connect with the random of macro base station completely with the random access procedure of micro-base station
Enter process, this has resulted in the waste of resource, and the time of random access procedure is more long.
The content of the invention
The embodiment of the present invention provides a kind of macro base station and the united accidental access method of micro-base station and equipment, with avoid UE with
The random access procedure of micro-base station repeats the random access procedure of UE and macro base station completely.
In order to achieve the above object, the embodiment of the present invention provides a kind of macro base station and the united Stochastic accessing side of micro-base station
Method, methods described specifically includes following steps：
User equipment (UE) carries out the random access procedure based on competition on macro base station, and preserves the UE in the grand base
The random access guiding used during the random access procedure based on competition is carried out on standing；
After random access procedures of the UE on macro base station is completed, the UE is using the random access guiding to micro-
Stochastic accessing is initiated in base station, and accidental access response message is generated by the micro-base station；
The UE receives the accidental access response message from the micro-base station, and disappears the accidental access response is received
After breath, confirm that random access procedures of the UE in the micro-base station is completed.
The UE carries out the random access procedure based on competition on macro base station, and preserves the UE on the macro base station
The random access guiding used during the random access procedure based on competition is carried out, is specifically included：
Carrying can be used for contention access during the UE receives the broadcast message from the macro base station, and the broadcast message
Random access guiding group；The UE randomly chooses one at random from the random access guiding group that can be used for contention access
Access lead, and random access code transmission message Msg1 is sent to the macro base station using the random access guiding, and preserve
The random access guiding；
The UE receives the accidental access response message Msg2 from the macro base station, and sends up to the macro base station
The cell ID of micro-base station is carried in transmission message Msg3, and the Msg3；From the macro base station competition is being sent to the UE
Solve after message Msg4 successes, send the UE to the corresponding micro-base station of the cell ID carries out base on the macro base station
Random access guiding, resource allocation information, schedule information and the cell-radio network used when the random access procedure of competition
Temporary mark C-RNTI；
The UE receives the contention resolution message Msg4 from the macro base station, and is receiving the contention resolution message
After Msg4, confirm that random access procedures of the UE on the macro base station is completed.
The UE initiates Stochastic accessing using the random access guiding to the micro-base station, specifically includes：
The UE receives the physical downlink control channel PDCCH order from micro-base station, and the PDCCH orders are for notifying
UE initiates the random access procedure with the micro-base station；Wherein, to be the micro-base station exist receiving the UE for the PDCCH orders
Random access guiding, resource allocation information, the scheduling used during the random access procedure based on competition are carried out on the macro base station
Sent after information and C-RNTI；
The UE carries out connecing at random based on competition using the UE after the PDCCH orders are received on macro base station
Enter the random access guiding used during process and initiate Stochastic accessing to the micro-base station.
In the accidental access response message from the micro-base station that the UE is received, the UE is carried in the macro base station
On carry out the random access guiding, resource allocation information, schedule information and the C- that use during the random access procedure based on competition
RNTI。
The UE initiates the random access procedure based on competition and the Stochastic accessing in micro-base station on macro base station
Process, specially：
When UE needs to be transformed into RRC connection status from RRC idle conditions, the UE needs to initiate the base on macro base station
In the random access procedure and the random access procedure in micro-base station of competition；Or,
When UE is when needing to initiate RRC connection reconstruction processes after Radio Link Failure, the UE needs to initiate in macro base station
On based on competition random access procedure and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in up when UE is in RRC connection status, but the default very first time
During desynchronizing state, if UE is currently needed for the new upstream data of transmission, the UE need to initiate on macro base station based on competing
The random access procedure striven and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in up when UE is in RRC connection status, but default second time
During desynchronizing state, if UE is currently needed for receiving new downlink data, and UE is currently needed for the ACK/ in uplink feedback response
During NACK, if network side does not use PDCCH orders to allow UE to initiate to exempt from the Stochastic accessing of competition, the UE needs to initiate grand
The random access procedure based on competition on base station and the random access procedure in micro-base station；Or,
When UE be in RRC connection status, and from Serving cell be switched to Target cell when, if network side not using switching
Order allows UE to initiate the Stochastic accessing for exempting from competition on macro base station, then the UE need to initiate on macro base station based on competition
Random access procedure and the random access procedure in micro-base station.
The embodiment of the present invention provides a kind of user equipment (UE), and the UE is specifically included：
First processing module, for carrying out the random access procedure based on competition on macro base station, and preserves UE described
The random access guiding used during the random access procedure based on competition is carried out on macro base station；
Second processing module, after being completed for the random access procedure on macro base station, before the Stochastic accessing
It is oriented to micro-base station and initiates Stochastic accessing, accidental access response message is generated by the micro-base station；And, receive and come from micro- base
The accidental access response message stood, and after the accidental access response message is received, confirm the UE in the micro-base station
On random access procedure complete.
The first processing module, specifically for receiving the broadcast message from the macro base station, and the broadcast message
Middle carrying can be used for the random access guiding group of contention access；From the random access guiding group that can be used for contention access with
Machine selects a random access guiding, and is disappeared to macro base station transmission random access code transmission using the random access guiding
Breath Msg1, and preserve the random access guiding；
The accidental access response message Msg2 from the macro base station is received, and uplink is sent to the macro base station and disappeared
The cell ID of micro-base station is carried in breath Msg3, and the Msg3；Disappeared to UE transmission contention resolveds from the macro base station
After breath Msg4 successes, send the UE to the corresponding micro-base station of the cell ID is carried out based on competition on the macro base station
Random access procedure when the random access guiding, resource allocation information, schedule information and the cell-radio network that use mark temporarily
Know C-RNTI；And, the contention resolution message Msg4 from the macro base station is received, and receiving the contention resolution message
After Msg4, confirm that random access procedures of the UE on the macro base station is completed.
The Second processing module, specifically for receiving the physical downlink control channel PDCCH life from the micro-base station
Order, the PDCCH orders are for notifying that UE initiates the random access procedure with the micro-base station, and the PDCCH orders are institutes
State micro-base station and receive the Stochastic accessing that the uses when UE carries out the random access procedure based on competition on the macro base station
Sent after leading, resource allocation information, schedule information and C-RNTI；After the PDCCH orders are received, using UE in grand base
The random access guiding for carrying out being used during the random access procedure based on competition on standing initiates Stochastic accessing to micro-base station.
In the accidental access response message from micro-base station that the Second processing module is received, UE is carried in the grand base
Random access guiding, resource allocation information, schedule information and the C- used during the random access procedure based on competition are carried out on standing
RNTI。
The UE initiates the random access procedure based on competition and the Stochastic accessing in micro-base station on macro base station
Process, specially：
When UE need be transformed into RRC connection status from RRC idle conditions when, it is necessary to initiate on macro base station based on competition
Random access procedure and the random access procedure in micro-base station；Or,
When UE needed after Radio Link Failure initiate RRC connection reconstruction processes when, it is necessary to initiate the base on macro base station
In the random access procedure and the random access procedure in micro-base station of competition；Or,
Do not receive the TA orders of network side and be in up when UE is in RRC connection status, but the default very first time
During desynchronizing state, if UE is currently needed for the new upstream data of transmission, need to initiate on macro base station based on competition with
Machine access procedure and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in up when UE is in RRC connection status, but default second time
During desynchronizing state, if UE is currently needed for receiving new downlink data, and UE is currently needed for the ACK/ in uplink feedback response
During NACK, if network side does not use PDCCH orders to allow UE to initiate to exempt from the Stochastic accessing of competition, need to initiate on macro base station
Based on competition random access procedure and the random access procedure in micro-base station；Or,
When UE be in RRC connection status, and from Serving cell be switched to Target cell when, if network side not using switching
Order allows UE to initiate the Stochastic accessing for exempting from competition on macro base station, then need to initiate random based on what is competed on macro base station
Access procedure and the random access procedure in micro-base station.
Compared with prior art, the embodiment of the present invention at least has advantages below：In the embodiment of the present invention, in Stochastic accessing
During, macro base station and micro-base station are joined together, make full use of preferable Xn interfaces to carry out information exchange, so as to avoid UE with
The random access procedure of micro-base station repeats the random access procedure of UE and macro base station completely, simplifies random access procedure, saves
The time of random access procedure and resource.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, embodiment will be described below needed for the accompanying drawing to be used
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the random access procedure based on competition that UE is carried out in the prior art；
Fig. 2 is macro base station provided in an embodiment of the present invention and the united accidental access method flow chart of micro-base station；
Fig. 3 is a kind of structural representation of user equipment (UE) provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, shown
So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment one
For problems of the prior art, the embodiment of the present invention one provide a kind of macro base station and micro-base station it is united with
Machine cut-in method, as shown in Fig. 2 the accidental access method may comprise steps of：
Step 201, UE carries out the random access procedure based on competition on macro base station, and preserves UE and carried out on macro base station
The random access guiding used during based on the random access procedure for competing.
Step 202, after random access procedures of the UE on macro base station is completed, UE is using the random access guiding to micro- base
Stand and initiate Stochastic accessing, accidental access response message is generated by micro-base station.
Step 203, UE receives the accidental access response message from micro-base station, and is receiving the accidental access response message
Afterwards, confirm that random access procedures of the UE in micro-base station is completed.
In the embodiment of the present invention, UE carries out the random access procedure based on competition on macro base station, and preserves UE in grand base
The process of random access guiding used during the random access procedure based on competition is carried out on standing, is specifically including but not limited to as follows
Implementation method：Carrying can be used for connecing at random for contention access during UE receives the broadcast message from macro base station, and the broadcast message
Enter leading group.Afterwards, UE randomly chooses a random access guiding from the random access guiding group that can be used for contention access, and
Random access code is sent to macro base station and send message Msg1, and preserve the random access guiding using the random access guiding（I.e.
UE carries out the random access guiding used during the random access procedure based on competition on macro base station）.Afterwards, UE is received from grand
The accidental access response message Msg2 of base station, and uplink message Msg3 is sent to macro base station, and micro- base is carried in the Msg3
The cell ID stood（Cell ID）；From macro base station after contention resolution message Msg4 successes are sent to UE, to the cell ID
Corresponding micro-base station sends the random access guiding that UE carries out being used during the random access procedure based on competition on macro base station
（Such as：Random access guiding is identified）, resource allocation information（Such as：Ascending resource mandate）, schedule information（Such as：Clock Advanced information）
And C-RNTI.Afterwards, UE receive the contention resolution message Msg4 from macro base station, and receive contention resolution message Msg4 it
Afterwards, confirm that random access procedures of the UE on macro base station is completed.
In the embodiment of the present invention, UE initiates the process of Stochastic accessing using random access guiding to micro-base station, specifically includes
But it is not limited to that mode is implemented as follows：UE receive the PDCCH orders from micro-base station, the PDCCH orders for notify UE initiate and
The random access procedure of micro-base station, and the PDCCH orders be micro-base station receive UE carried out on macro base station based on competition with
Sent after the random access guiding, resource allocation information, schedule information and the C-RNTI that are used during machine access procedure.UE is being received
After PDCCH orders, the random access guiding used when carrying out the random access procedure for being based on competing on macro base station using UE
（The random access guiding preserved i.e. in step 201）Directly Stochastic accessing is initiated to micro-base station.
In the embodiment of the present invention, in the accidental access response message from micro-base station that UE is received, the content of carrying includes
But it is not limited to one below or any combination：UE carried out on macro base station based on competition random access procedure when use with
Machine access lead, resource allocation information, schedule information and C-RNTI.
For above-mentioned processing procedure, the preferred embodiment of the embodiment of the present invention is comprised the following steps：
Step 1, macro base station send broadcast message to UE, and the broadcast message from macro base station is received by UE, and the broadcast is believed
Carried in breath and can be used for the random access guiding group of contention access.
Step 2, UE are from can be used for the random access guiding group of contention access（Before the Stochastic accessing carried in broadcasting the message
Lead group）One random access guiding of middle random selection, and using the random access guiding and random access time slot to macro base station
Send random access code and send message Msg1, and preserve the random access guiding（The random access guiding is UE on macro base station
Carry out the random access guiding used during the random access procedure based on competition）.Multiple UE select identical random access time slot
Can be clashed during with random access guiding.
Step 3, macro base station generate accidental access response message Msg2, and send to UE after the Msg1 for receiving UE transmissions
Msg2, the accidental access response message Msg2 from macro base station is received by UE.Wherein, UE by monitor the RA-RNTI of PDCCH come
Receiving random access response message Msg2.
Step 4, UE carry micro-base station in sending uplink message Msg3, and uplink message Msg3 to macro base station
Cell ID（Cell ID）.Wherein, the cell ID of the micro-base station be UE obtained in cell search process before it is micro-
The Cell ID of base station, that is, cover the Cell ID of the micro-base station of UE.
Step 5, macro base station send contention resolution message Msg4 after the Msg3 for receiving UE transmissions to UE, are come by UE receptions
From the contention resolution message Msg4 of macro base station, and after the Msg4 is received, random access procedures of the UE on macro base station is confirmed
Complete.Additionally, macro base station to UE after contention resolution message Msg4 successes are sent, it is corresponding micro- to the cell ID of micro-base station
Base station sends the random access guiding that UE carries out being used during the random access procedure based on competition on macro base station（Such as：Connect at random
Enter lead flag）, resource allocation information（Such as：Ascending resource mandate）, schedule information（Such as：Clock Advanced information）And C-RNTI.
Wherein, after macro base station receives ACK, confirm to send contention resolution message Msg4 successes to UE.
Step 6, micro-base station receive UE carried out on macro base station based on competition random access procedure when use it is random
Access lead, resource allocation information（Such as：Ascending resource mandate）, schedule information（Such as：Clock Advanced information）After C-RNTI,
PDCCH orders are sent to UE（Such as：ePDCCH）, and the PDCCH orders are for notifying that UE initiates the Stochastic accessing with this micro-base station
Process.
Step 7, UE receive the PDCCH orders from micro-base station, and UE is after PDCCH orders are received, using UE grand
The random access guiding used during the random access procedure based on competition is carried out on base station（What is preserved i.e. in step 201 connects at random
Enter leading）Directly Stochastic accessing is initiated to micro-base station.
Step 8, micro-base station produce an accidental access response message for MAC layer after random access guiding is received, and
Send the accidental access response message to UE, by UE receive the accidental access response message from micro-base station, and receive this with
Machine is accessed after response message, confirms that random access procedures of the UE in micro-base station is completed.Wherein, UE receive from micro-base station
Accidental access response message in, the content of carrying includes but is not limited to one below or any combination：UE is on macro base station
Carry out random access guiding, the resource allocation information used during the random access procedure based on competition（Such as：Ascending resource mandate）、
Schedule information（Such as：Clock Advanced information）And C-RNTI.Based on this clock Advanced information, the up same of UE and micro-base station can be completed
Step.So far, UE is completed with the random access procedure of macro base station, micro-base station.
In the embodiment of the present invention, UE initiate on macro base station based on competition random access procedure and in micro-base station
Random access procedure（That is step 201- steps 203）Application scenarios, be specifically including but not limited to：Application scenarios 1, when UE need
Will from RRC idle conditions be transformed into RRC connection status when, UE need initiate on macro base station based on competition Stochastic accessing mistake
Journey and the random access procedure in micro-base station.Application scenarios 2, when UE needed after Radio Link Failure initiate RRC connect
During process of reconstruction, UE needs to initiate the random access procedure based on competition and connecing at random in micro-base station on macro base station
Enter process.Application scenarios 3, the TA for not receiving network side is in RRC connection status, but the default very first time as UE
（Timing Alignment, Timing Advance）When ordering and being in uplink loss state, if UE be currently needed for transmission it is new
Upstream data, then UE needs to initiate random access procedure based on competition on macro base station and random in micro-base station connecing
Enter process.Application scenarios 4, when UE be in RRC connection status, but default second time do not receive network side TA orders and
During in uplink loss state, if UE is currently needed for receiving new downlink data, and UE is currently needed for being responded in uplink feedback
ACK/NACK（Affirmative determination/NACK）When, if network side does not use PDCCH orders to allow UE to initiate to exempt from the random of competition
Access, then UE needs to initiate the random access procedure based on competition and the Stochastic accessing mistake in micro-base station on macro base station
Journey.Application scenarios 5, when UE be in RRC connection status, and from Serving cell be switched to Target cell when, if network side does not make
With switching command by UE initiate on macro base station exempt from competition Stochastic accessing, then UE need initiate on macro base station based on competing
Strive random access procedure and the random access procedure in micro-base station.
For above-mentioned steps 1- steps 5, below in conjunction with above-mentioned application scenarios 1- application scenarios 5, to broadcast message, Msg1,
The transmission process of Msg2, Msg3 and Msg4, is further elaborated.
Broadcast message is sent to UE for step 1, macro base station, the broadcast message from macro base station is received by UE, and this is wide
Carrying can be used for the random access guiding group of contention access in broadcasting information.
For step 2, UE from can be used for the random access guiding group of contention access（The Stochastic accessing carried in broadcast message
Leading group）One random access guiding of middle random selection, and using the random access guiding and random access time slot to grand base
Stand transmission Msg1, and preserves the random access guiding.
For step 3, macro base station after the Msg1 for receiving UE transmissions, Msg2 is generated, and Msg2 is sent to UE, received by UE
Msg2 from macro base station.Under application scenarios 1, the content carried in the Msg2 includes：The corresponding random access guidings of Msg1
Mark, clock Advanced information, ascending resource mandate（It is used for subsequent upstream transmission resource allocation）, interim C-RNTI.In application
Under scene 2, the content carried in the Msg2 includes：Random access guiding mark, clock Advanced information, ascending resource mandate（Its
For subsequent upstream transmission resource allocation）.Under application scenarios 3, application scenarios 4, application scenarios 5, what is carried in the Msg2 is interior
Appearance includes：Random access guiding mark, clock Advanced information, ascending resource mandate（It is used for subsequent upstream transmission resource point
Match somebody with somebody）.
The ascending resource mandate distributed according to Msg2 for step 4, UE is carried in sending Msg3, and the Msg3 to macro base station
The cell ID of micro-base station, and UE can start contention resolved timer after Msg3 has been sent.Under application scenarios 1, the Msg3
The content of middle carrying includes：RRC connection request message, and Msg3 is by CCCH CCCH transmission, the RRC connection request
Identified comprising NAS layers of UE in message（Such as S-TMSI or random number）.Under application scenarios 2, carried in the Msg3
Content includes：RRC connection reconstruction request messages, and Msg3 is by CCCH CCCH transmission, RRC connection reconstructions request
Identified comprising NAS layers of UE in message（Such as C-RNTI）.Under application scenarios 3, application scenarios 4, application scenarios 5, in the Msg3
The content of carrying includes：C-RNTI, and the C-RNTI is by CCCH CCCH transmission.
For step 5, macro base station after the Msg3 for receiving UE transmissions, scrambled using the interim C-RNTI in Msg2
PDCCH sends Msg4 to UE, and the Msg4 is received by UE, and Stochastic accessing mistakes of the UE on macro base station is confirmed after the Msg4 is received
Journey is completed.Wherein, comprising what is included in UE contention resolveds mark MAC CE, and MAC CE passed in Msg3 in the content of the Msg4
Defeated CCCH SDU.If after UE decodings Msg4, finding wherein MAC CE and from the CCCH SDU matchings sent in Msg3,
Contention resolved is then completed, the Stochastic accessing success with macro base station, now interim C-RNTI upgrades to formal C-RNTI.If not
Match somebody with somebody, then initiate Stochastic accessing again.
After carrying out Stochastic accessing due to UE and macro base station, UE has had the mark of itself（C-RNTI）, macro base station can
This mark is sent to micro-base station with by Xn interfaces, now UE carries out just comparing based on the Stochastic accessing for competing again with micro-base station
Compared with redundancy.Based on this, in the embodiment of the present invention, in the random access procedure, macro base station and micro-base station are joined together, fully profit
With macro base station and the Xn interfaces of micro-base station（The interface is almost preferable backhaul）Information exchange is carried out, UE is random with micro-base station
Access procedure is designed to exempt from competitive way, so as to avoid UE from repeating UE completely with macro base station with the random access procedure of micro-base station
Random access procedure, simplifies random access procedure, saves time and the resource of random access procedure.
Embodiment two
Based on the inventive concept same with the above method, a kind of user equipment (UE) is additionally provided in the embodiment of the present invention two,
As shown in figure 3, the user equipment (UE) is specifically included：
First processing module 11, for carrying out the random access procedure based on competition on macro base station, and preserves UE in institute
State the random access guiding for carrying out being used during the random access procedure based on competition on macro base station；
Second processing module 12, after being completed for the random access procedure on macro base station, using the Stochastic accessing
It is leading to initiate Stochastic accessing to micro-base station, accidental access response message is generated by the micro-base station；And, receive from described micro-
The accidental access response message of base station, and after the accidental access response message is received, confirm the UE in micro- base
Random access procedure on standing is completed.
The first processing module 11, specifically for receiving the broadcast message from the macro base station, and the broadcast letter
Carried in breath and can be used for the random access guiding group of contention access；From the random access guiding group that can be used for contention access
One random access guiding of random selection, and send random access code transmission to the macro base station using the random access guiding
Message Msg1, and preserve the random access guiding；
The accidental access response message Msg2 from the macro base station is received, and uplink is sent to the macro base station and disappeared
The cell ID of micro-base station is carried in breath Msg3, and the Msg3；Disappeared to UE transmission contention resolveds from the macro base station
After breath Msg4 successes, send the UE to the corresponding micro-base station of the cell ID is carried out based on competition on the macro base station
Random access procedure when the random access guiding, resource allocation information, schedule information and the cell-radio network that use mark temporarily
Know C-RNTI；And, the contention resolution message Msg4 from the macro base station is received, and receiving the contention resolution message
After Msg4, confirm that random access procedures of the UE on the macro base station is completed.
The Second processing module 12, specifically for receiving the physical downlink control channel PDCCH from the micro-base station
Order, the PDCCH orders are for notifying that UE initiates the random access procedure with the micro-base station, and the PDCCH orders are
The micro-base station is connect receiving used when the UE carries out the random access procedure based on competition on the macro base station random
Enter what is sent after leading, resource allocation information, schedule information and C-RNTI；After the PDCCH orders are received, using UE grand
The random access guiding for carrying out being used during the random access procedure based on competition on base station initiates Stochastic accessing to micro-base station.
In the embodiment of the present invention, the accidental access response message from micro-base station that the Second processing module 12 is received
In, carry random access guiding, resource point that UE carries out being used during the random access procedure based on competition on the macro base station
With information, schedule information and C-RNTI.
In the embodiment of the present invention, the UE initiates random access procedure based on competition on macro base station and in micro- base
Random access procedure on standing, specially：
When UE need be transformed into RRC connection status from RRC idle conditions when, it is necessary to initiate on macro base station based on competition
Random access procedure and the random access procedure in micro-base station；Or,
When UE needed after Radio Link Failure initiate RRC connection reconstruction processes when, it is necessary to initiate the base on macro base station
In the random access procedure and the random access procedure in micro-base station of competition；Or,
Do not receive the TA orders of network side and be in up when UE is in RRC connection status, but the default very first time
During desynchronizing state, if UE is currently needed for the new upstream data of transmission, need to initiate on macro base station based on competition with
Machine access procedure and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in up when UE is in RRC connection status, but default second time
During desynchronizing state, if UE is currently needed for receiving new downlink data, and UE is currently needed for the ACK/ in uplink feedback response
During NACK, if network side does not use PDCCH orders to allow UE to initiate to exempt from the Stochastic accessing of competition, need to initiate on macro base station
Based on competition random access procedure and the random access procedure in micro-base station；Or,
When UE be in RRC connection status, and from Serving cell be switched to Target cell when, if network side not using switching
Order allows UE to initiate the Stochastic accessing for exempting from competition on macro base station, then need to initiate random based on what is competed on macro base station
Access procedure and the random access procedure in micro-base station.
Wherein, the modules of apparatus of the present invention can be integrated in one, it is also possible to be deployed separately.Above-mentioned module can be closed
And be a module, it is also possible to it is further split into multiple submodule.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but the former is more in many cases
Good implementation method.Based on such understanding, what technical scheme substantially contributed to prior art in other words
Part can be embodied in the form of software product, and the computer software product is stored in a storage medium, if including
Dry instruction is used to so that a computer equipment（Can be personal computer, server, or network equipment etc.）Perform this hair
Method described in bright each embodiment.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for preferred embodiment, module or stream in accompanying drawing
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can be divided according to embodiment description
It is distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On
Stating the module of embodiment can merge into a module, it is also possible to be further split into multiple submodule.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Disclosed above is only several specific embodiments of the invention, but, the present invention is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection scope of the present invention.
Claims (8)
1. a kind of macro base station and the united accidental access method of micro-base station, it is characterised in that including：
User equipment (UE) carries out the random access procedure based on competition on macro base station, and preserves the UE on the macro base station
Carry out the random access guiding used during the random access procedure based on competition；
After random access procedures of the UE on macro base station is completed, the UE is using the random access guiding to micro-base station
Stochastic accessing is initiated, accidental access response message is generated by the micro-base station；
The UE receives the accidental access response message from the micro-base station, and is receiving the accidental access response message
Afterwards, confirm that random access procedures of the UE in the micro-base station is completed；
Wherein, the user equipment (UE) carries out the random access procedure based on competition on macro base station, and preserves the UE in institute
The process of the random access guiding for carrying out being used during the random access procedure based on competition on macro base station is stated, is specifically included：
The UE receive carry in the broadcast message from the macro base station, and the broadcast message can be used for contention access with
Machine access lead group；The UE randomly chooses a Stochastic accessing from the random access guiding group that can be used for contention access
It is leading, and random access code transmission message Msg1 is sent to the macro base station using the random access guiding, and preserve described
Random access guiding；
The UE receives the accidental access response message Msg2 from the macro base station, and sends uplink to the macro base station
The cell ID of micro-base station is carried in message Msg3, and the Msg3；From the macro base station contention resolved is being sent to the UE
After message Msg4 successes, send the UE to the corresponding micro-base station of the cell ID is carried out based on competing on the macro base station
Random access guiding, resource allocation information, schedule information and the cell-radio network used during the random access procedure striven are interim
Mark C-RNTI；
The UE receives the contention resolution message Msg4 from the macro base station, and receive the contention resolution message Msg4 it
Afterwards, confirm that random access procedures of the UE on the macro base station is completed.
2. the method for claim 1, it is characterised in that the UE is using the random access guiding to the micro-base station
The process of Stochastic accessing is initiated, is specifically included：
The UE receives the physical downlink control channel PDCCH order from micro-base station, and the PDCCH orders are for notifying that UE sends out
Play the random access procedure with the micro-base station；Wherein, the PDCCH orders are that the micro-base station is receiving the UE described
Random access guiding, resource allocation information, the schedule information used during the random access procedure based on competition are carried out on macro base station
With transmission after C-RNTI；
The UE carries out the Stochastic accessing mistake based on competition using the UE after the PDCCH orders are received on macro base station
The random access guiding used during journey initiates Stochastic accessing to the micro-base station.
3. method as claimed in claim 1 or 2, it is characterised in that random from the micro-base station that the UE is received connecing
In entering response message, carry that the UE carries out being used during the random access procedure based on competition on the macro base station random connects
Enter leading, resource allocation information, schedule information and C-RNTI.
4. the method as described in claim any one of 1-2, it is characterised in that the UE initiate on macro base station based on competition
Random access procedure and the random access procedure in micro-base station, specially：
When UE needs to be transformed into RRC connection status from RRC idle conditions, the UE need to initiate on macro base station based on competing
The random access procedure striven and the random access procedure in micro-base station；Or,
When UE is when needing to initiate RRC connection reconstruction processes after Radio Link Failure, the UE needs to initiate on macro base station
Random access procedure based on competition and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in uplink loss when UE is in RRC connection status, but the default very first time
During state, if UE is currently needed for the new upstream data of transmission, the UE need to initiate on macro base station based on competition
Random access procedure and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in uplink loss when UE is in RRC connection status, but default second time
During state, if UE is currently needed for receiving new downlink data, and UE is currently needed in the ACK/NACK of uplink feedback response,
If network side does not use PDCCH orders to allow UE to initiate to exempt from the Stochastic accessing of competition, the UE needs to initiate on macro base station
Based on competition random access procedure and the random access procedure in micro-base station；Or,
When UE be in RRC connection status, and from Serving cell be switched to Target cell when, if network side not use switching command
Allow UE to initiate the Stochastic accessing for exempting from competition on macro base station, then the UE need to initiate on macro base station based on competition with
Machine access procedure and the random access procedure in micro-base station.
5. a kind of user equipment (UE), it is characterised in that the UE is specifically included：
First processing module, for carrying out the random access procedure based on competition on macro base station, and preserves UE in the grand base
The random access guiding used during the random access procedure based on competition is carried out on standing；
Second processing module, on macro base station random access procedure complete after, using the random access guiding to
Micro-base station initiates Stochastic accessing, and accidental access response message is generated by the micro-base station；And, receive from the micro-base station
Accidental access response message, and after the accidental access response message is received, confirm the UE in the micro-base station
Random access procedure is completed；
Wherein,
The first processing module, take in the broadcast message from the macro base station, and the broadcast message specifically for receiving
Band can be used for the random access guiding group of contention access；Selected at random from the random access guiding group that can be used for contention access
A random access guiding is selected, and random access code is sent to the macro base station using the random access guiding and send message
Msg1, and preserve the random access guiding；
The accidental access response message Msg2 from the macro base station is received, and uplink message is sent to the macro base station
The cell ID of micro-base station is carried in Msg3, and the Msg3；From the macro base station contention resolution message is being sent to the UE
After Msg4 successes, send the UE to the corresponding micro-base station of the cell ID is carried out based on competition on the macro base station
Random access guiding, resource allocation information, schedule information and the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI used during random access procedure
C-RNTI；And, the contention resolution message Msg4 from the macro base station is received, and receiving the contention resolution message Msg4
Afterwards, confirm that random access procedures of the UE on the macro base station is completed.
6. UE as claimed in claim 5, it is characterised in that
The Second processing module, specifically for receiving the physical downlink control channel PDCCH order from the micro-base station, institute
PDCCH orders are stated for notifying that UE initiates the random access procedure with the micro-base station, and the PDCCH orders are micro- bases
Stand receive the UE carried out on the macro base station based on competition random access procedure when use random access guiding, money
Sent after source distribution information, schedule information and C-RNTI；It is enterprising in macro base station using UE after the PDCCH orders are received
The random access guiding used when row is based on the random access procedure for competing initiates Stochastic accessing to micro-base station.
7. the UE as described in claim 5 or 6, it is characterised in that the Second processing module receive from micro-base station with
Machine is accessed in response message, and carry that UE carries out being used during the random access procedure based on competition on the macro base station random connects
Enter leading, resource allocation information, schedule information and C-RNTI.
8. the UE as described in claim any one of 5-6, it is characterised in that the UE initiate on macro base station based on competition
Random access procedure and the random access procedure in micro-base station, specially：
When UE need be transformed into RRC connection status from RRC idle conditions when, it is necessary to initiate on macro base station based on competition with
Machine access procedure and the random access procedure in micro-base station；Or,
When UE needed after Radio Link Failure initiate RRC connection reconstruction processes when, it is necessary to initiate on macro base station based on competing
The random access procedure striven and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in uplink loss when UE is in RRC connection status, but the default very first time
During state, if UE is currently needed for the new upstream data of transmission, need to initiate the connecing at random based on competition on macro base station
Enter process and the random access procedure in micro-base station；Or,
Do not receive the TA orders of network side and be in uplink loss when UE is in RRC connection status, but default second time
During state, if UE is currently needed for receiving new downlink data, and UE is currently needed in the ACK/NACK of uplink feedback response,
If network side do not use PDCCH orders allow UE initiate exempt from competition Stochastic accessing, need initiate on macro base station based on
The random access procedure of competition and the random access procedure in micro-base station；Or,
When UE be in RRC connection status, and from Serving cell be switched to Target cell when, if network side not use switching command
Allow UE to initiate the Stochastic accessing for exempting from competition on macro base station, then need to initiate the Stochastic accessing based on competition on macro base station
Process and the random access procedure in micro-base station.
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| WO2016070413A1 (en) | 2014-11-07 | 2016-05-12 | Mediatek Singapore Pte. Ltd. | Methods for enhanced contention based access response message |
| WO2017024468A1 (en) * | 2015-08-10 | 2017-02-16 | 华为技术有限公司 | Random access method and apparatus |
| CN107205271B (en) | 2016-03-16 | 2020-04-28 | 华为技术有限公司 | Network out-of-step state processing method, network access method and device |
| CN107493608B (en) * | 2016-06-12 | 2020-06-05 | 电信科学技术研究院 | Method and equipment for random access |
| CN107734709A (en) * | 2016-08-12 | 2018-02-23 | 华为技术有限公司 | Random access control method and device |
| CN108282899B (en) | 2017-01-05 | 2020-03-06 | 电信科学技术研究院 | Two-step competition random access method and device |
| CN107659969B (en) * | 2017-09-15 | 2020-09-08 | 武汉虹信通信技术有限责任公司 | Method and device for improving switching success rate in rail transit system |
| CN110582104B (en) * | 2019-09-14 | 2021-11-30 | 上海掘谜实业有限公司 | Cosmetic detection information transmission method and transmission system |
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| CN103533663A (en) * | 2013-09-27 | 2014-01-22 | 电信科学技术研究院 | Random access method and equipment thereof |
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