CN106211342A - A kind of small-cell cut-in method and terminal, base station - Google Patents
A kind of small-cell cut-in method and terminal, base station Download PDFInfo
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- CN106211342A CN106211342A CN201510217269.XA CN201510217269A CN106211342A CN 106211342 A CN106211342 A CN 106211342A CN 201510217269 A CN201510217269 A CN 201510217269A CN 106211342 A CN106211342 A CN 106211342A
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Abstract
The invention discloses a kind of small-cell cut-in method, described method includes: terminal is accessed described macro base station by accidental channel access process by macro base station, and the common channel information list of the micro-base station in self coverage is sent to described terminal by described macro base station；Described macro base station notifies the micro-base station in described own range, intercepts the upward signal that described terminal sends；Described macro base station is held consultation with the one or more micro-base station in own range, determines the running time-frequency resource information for downlink synchronous pilot frequency belonging to one or more than one micro-base station；One or the intensity that more than one micro-base station is the described upward signal listened to meet micro-base station of default condition；Described running time-frequency resource information is sent to the terminal of correspondence by described macro base station.The present invention also discloses a kind of base station and terminal.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to a kind of small-cell cut-in method and terminal, base station.
Background technology
Along with UMTS (Universal Mobile Telecommunications System,
UMTS) popularization and application of technology it is called for short, popularizing of the wireless application of various high speeds.Popular for high data
The demand of business is increasing.The change of applied business with user is constantly developed, according to one along with business
A little survey results, the business of 30% of about having uses and occurs at home area, and the business of about 35% makes
With occurring at the indoor scene such as company, restaurant.Therefore the quality of in-door covering will largely affect user
Business use impression, and under these scenes, typically use 2.1GHz frequency range to provide due to conventional macro base station
Source, loss and space loss are relatively big, more weak to the penetration capacity of building masonry wall, are likely to result in indoor
The quality covered is not fine.Similarly for hot spot region, such as shopping centre, the region such as subway station, number
Numerous, communication is in great demand, due to reasons such as the bus station position of macro base station and costs, holds the most very much
Capacity constraint easily occurs, thus affects the business experience of user.For these situations, micro-base station solution
It is introduced into tackle this kind of scene, on the one hand macro base station covering is supplemented, to improve the quality of in-door covering
With the business experience of user, on the other hand shunt the business of macro network, to alleviate the flow pressure of grand net.
Micro-base station has transmitting, and power is low, coverage is little, volume is little, apply feature flexibly.Based on this
, relative to macro base station networking model, substantial amounts of micro-base station may be there is at regional area in a little features.Locally
There is the network of substantial amounts of micro-base station and be referred to as super-intensive network (Ultra Dense Network) in region, super
The quantity of the micro-base station in dense network is suitable with the quantity of terminal, and the quantity of the most micro-base station is more than number of terminals
Amount, so may result in the spacing between base station the least (such as < 10m).Spacing between base station is the least to be led
Cause the region increase that base station overlap covers, thus cause interference with environment and become more complicated, and mobility is cut
The mortality changed is higher.
Summary of the invention
In view of this, the embodiment of the present invention provides one for solving at least one problem present in prior art
Plant small-cell cut-in method and terminal, base station, it is possible to reduce the expense periodically sending signaling, thus carry
The probability of high micro-base station dormancy and avoid system information to pollute.
The technical scheme of the embodiment of the present invention is achieved in that
First aspect, the embodiment of the present invention provides a kind of small-cell cut-in method, and described method includes:
Terminal is accessed described macro base station by accidental channel access process by macro base station, and described macro base station is by self
The common channel information list of the micro-base station in coverage is sent to described terminal；
Described macro base station notifies the micro-base station in described own range, intercepts the upward signal that described terminal sends；
Described macro base station is held consultation with the one or more micro-base station in own range, determines and belongs to
One or the running time-frequency resource information for downlink synchronous pilot frequency of more than one micro-base station；One
Or the intensity that more than one micro-base station is the described upward signal listened to meets micro-base of default condition
Stand；
Described running time-frequency resource information is sent to the terminal of correspondence by described macro base station.
Second aspect, the embodiment of the present invention provides a kind of small-cell cut-in method, and described method includes:
Terminal passes through the macro base station in the range of self is accessed belonging to self by accidental channel access process；
Described terminal receives the public letter of the micro-base station in the described macro base station coverage that described macro base station sends
Road information list；
Described terminal receives the mark of dominant micro-base station system information that described macro base station sends, or from micro-
The mark of micro-base station system information that the downlink synchronous pilot frequency acquisition of information that base station sends is implicit；
Described terminal determines mesh according to mark and the described common channel information list of described micro-base station system information
Mark micro-base station；
Described terminal is based on the micro-base station of target described in described public access information access.
The third aspect, the embodiment of the present invention provides a kind of small-cell cut-in method, and described method includes:
The upper of the terminal transmission in self coverage is intercepted in the instruction based on self affiliated macro base station of micro-base station
Row signal；
Described micro-base station judges whether described upward signal meets default condition, obtains judged result；
When described judged result shows that described upward signal meets default condition, described micro-base station is with described
Macro base station is held consultation, and determines the running time-frequency resource information for descending pilot frequency belonging to described micro-base station, in order to
Described running time-frequency resource information and described terminal is utilized to carry out information mutual.
Fourth aspect, the embodiment of the present invention provides a kind of macro base station, described macro base station include the first access unit,
First transmitting element, notification unit, first determine unit and the second transmitting element, wherein:
Described first access unit, for accessing macro base station by accidental channel access process by terminal；
Described first transmitting element, for by the common channel information list of the micro-base station in self coverage
It is sent to described terminal；
Described notification unit, the micro-base station in notifying described own range, intercept what described terminal sent
Upward signal
Described first determines unit, for assisting with the one or more micro-base station in own range
Business, determines that the running time-frequency resource for downlink synchronous pilot frequency belonging to one or more than one micro-base station is believed
Breath；One or the intensity that more than one micro-base station is the described upward signal listened to meet default
Micro-base station of condition；
Described second transmitting element, for being sent to the terminal of correspondence by pilot tone running time-frequency resource information.
5th aspect, the embodiment of the present invention provides a kind of terminal, described terminal include the second access unit, the
Two receive unit, the 3rd receive unit or acquiring unit, second determine unit and access unit, wherein:
Described second access unit, for accessing scope belonging to self by accidental channel access process by self
Interior macro base station；
Described second receives unit, in receiving the described macro base station coverage that described macro base station sends
The common channel information list of micro-base station；
Described 3rd receives unit, for receiving dominant micro-base station system information of described macro base station transmission
Mark, or, described acquiring unit, implies for the downlink synchronous pilot frequency acquisition of information sent from micro-base station
The mark of micro-base station system information；
Described second determines unit, for the mark according to micro-base station system information and described common channel information
List determines the micro-base station of target；
Described access unit, for based on the micro-base station of target described in described public access information access.
6th aspect, the embodiment of the present invention provides a kind of micro-base station, and described micro-base station includes intercepting unit, sentencing
Disconnected unit, the 3rd determine unit, wherein:
Described intercept unit, intercept in self coverage for instruction based on self affiliated macro base station
The upward signal that terminal sends；
Described judging unit, for judging whether described upward signal meets default condition, obtains judging knot
Really；
Described 3rd determines unit, for showing that described upward signal meets default bar when described judged result
During part, hold consultation with described macro base station and determine the time-frequency for downlink synchronous pilot frequency belonging to each micro-base station
Resource information, in order to utilize described running time-frequency resource information and described terminal to carry out information mutual.
A kind of small-cell cut-in method of embodiment of the present invention offer and terminal, base station, wherein, macro base station leads to
Crossing accidental channel access process and terminal accesses described macro base station, described macro base station is by self coverage
The common channel information list of micro-base station is sent to described terminal；In described macro base station notifies described own range
Micro-base station, intercept described terminal send upward signal；In described macro base station and own range one or
Hold consultation in more than one micro-base station, determine belong to one or more than one micro-base station under
The running time-frequency resource information of row synchronizing pilot；One or more than one micro-base station be listen to described on
The intensity of row signal meets micro-base station of default condition；Described running time-frequency resource information is sent by described macro base station
Give corresponding terminal；So, it is possible to reduce the expense periodically sending signaling, thus improve micro-base station
The probability of dormancy and avoid system information to pollute.
Accompanying drawing explanation
Fig. 1-1 is the mutual schematic diagram in correlation technique between macro base station and micro-base station；
Fig. 1-2 be the embodiment of the present invention one small-cell cut-in method realize schematic flow sheet；
Fig. 2 be the embodiment of the present invention two small-cell cut-in method realize schematic flow sheet；
Fig. 3 is the composition structural representation of the embodiment of the present invention three macro base station；
Fig. 4 is the composition structural representation of the embodiment of the present invention four terminal；
Fig. 5 is the composition structural representation of the micro-base station of the embodiment of the present invention five.
Detailed description of the invention
The 12nd version (3rd Generation of third generation partner program can be used under super-intensive network
Partnership Project Release 12,3GPP R12) chain of command separates (C/U split) with service surface
The problem that mode can be used to solve to point out in background above technology.Fig. 1-1 be in correlation technique macro base station with
Mutual schematic diagram between micro-base station, as Figure 1-1, terminal (User Equipment, UE) is passed through
Set up unique wireless heterogeneous networks (Radio Resource Control, RRC) signaling with macro base station to connect,
Manage the data cube computation set up on micro-base station, this avoid the too small third layer frequently caused in community
(L3) the signaling switching more than.Simultaneously because macro base station and micro-base station define overlapping covering, in load relatively
The when of little, micro-base station can be turned off dynamically, it is to avoid efficiency also can be improved in covering black hole.
Although with the doubly-linked knot mode that separates with service surface of chain of command so that more than radio resource control layer
Signaling switching reduce, but still fall within different communities between micro-base station and macro base station, need broadcast not
Same system information, in order to cell identification, synchronization, accidental channel (RACH) access etc..Micro-base station
Public broadcasting is the following information of broadcast transmission in the way of different loop cycle: PSS/SSS:2 time/10ms；
MIB:1 time/40ms；SIB:1 time/80ms, 160ms/320ms etc., wherein, PSS represents master sync signal
(Primary Synchronization Signal), SSS represents auxiliary synchronous signals (Secondary
Synchronization Signal), MIB represents Master Information Block (Master Information Block), SIB
Represent system information block (System Information Block).
Off the net in dense set, owing to neighboring BS information with (different) system is more present in system information block,
The mode of periodic broadcast easily forms system information and pollutes (System Information Pollution), causes
Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR) is even if negative
Carry the lowest in the case of also will not be the highest, to such an extent as to the tune of higher (such as more than 256QAM) can not be used
System and coding strategy (Modulation and Coding Scheme, MCS), so that throughput is by shadow
Ring.Additionally to also result in energy consumption higher for the system information of periodic broadcast independence.
A kind of small-cell cut-in method will be provided, the method main in examples provided below of the present invention
Thought is: the system information of the macro base station all of micro-base station in macro base station coverage described in terminal broadcast
List (common channel information list), the micro-base station in described macro base station coverage only need to be by micro-base station system
The mark of information is sent to macro base station belonging to self, and will send terminal with descending access pilot frequency information；?
Self is linked in micro-base station by the information that rear terminal sends according to macro base station and micro-base station.Wherein, public letter
Road information list includes the mark of micro-base station system information, Master Information Block (MIB), system information block SIB etc.
Access information, descending access pilot frequency information includes master sync signal/auxiliary synchronous signal (PSS/SSS) etc..
By foregoing description it can be seen that descending access pilot frequency information only need to be sent to terminal by micro-base station, thus subtract
Few expense periodically sending signaling, and then improve the probability of micro-base station dormancy.
The technical solution of the present invention is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
Embodiment one
The embodiment of the present invention provides a kind of small-cell cut-in method, and the method is applied to macro base station, this small-cell
The function that cut-in method is realized can be realized, certainly by the processor caller code in macro base station
Program code can be saved in computer-readable storage medium, it is seen then that this macro base station at least includes processor and deposits
Storage media.
Fig. 1-2 be the embodiment of the present invention one small-cell cut-in method realize schematic flow sheet, such as Fig. 1-2 institute
Showing, this small-cell cut-in method includes:
Step 101, terminal is accessed macro base station by accidental channel access process by macro base station；
Here, described accidental channel access process (RACH access process) refers to medium access control (Media
Access Control, MAC) layer control a function, be in wireless heterogeneous networks (Radio Resource
Control, RRC) terminal (User Equipment, UE) of idle condition, Stochastic accessing mistake can be passed through
Journey is set up with wireless network side and is connected, and the random access procedure that i.e. terminal first passes through based on competing is set up wireless
Resources control connects, idle state transition be connection status, then set up the connection of data communication, starts
Carry out data communication.Here, described wireless network side mainly includes the network equipments such as macro base station.
Further, jointly dispose and terminal only Radio Resource single with the foundation of micro-base station at macro base station and micro-base station
Control in the heterogeneous network connected, time within the coverage that terminal is in micro-base station and macro base station, eventually
First end carries out random access procedure based on competition on macro base station, carries out based on competing afterwards on micro-base station
The random access procedure striven.
Step 102, described macro base station is by the common channel information list of the micro-base station in self coverage
(Common Channel Information, CCI) is sent to described terminal；
Here, common channel information list include the mark of micro-base station system information, Master Information Block (MIB),
The access informations such as system information block (SIB)；In correlation technique, Master Information Block in common channel information list,
The information such as system information block are broadcast to terminal by micro-base station in the way of different loop cycle, thus cause and be
System information pollution；In the embodiment of the present invention, when terminal accesses macro base station, by macro base station by common signal channel
Information list is sent to described terminal, it is possible to be effectively prevented from the situation generation that system information is polluted.
Step 103, described macro base station notifies the micro-base station in described own range, intercepts described terminal and sends
Upward signal；
Here, described upward signal includes uplink reference signals such as Sounding Reference Signal (Sounding
Reference Signal, SRS).
Step 104, described macro base station holds consultation with the one or more micro-base station in own range,
Determine the running time-frequency resource information for downlink synchronous pilot frequency belonging to one or more than one micro-base station；
Here, one or intensity that more than one micro-base station is the described upward signal listened to meet
Micro-base station of the condition preset；In step 103, the micro-base in described macro base station notifies described own range
Stand, intercept the upward signal that described terminal sends；Then, the micro-base station in the range of described macro base station judges to detect
Whether the intensity of the upward signal heard meets the condition preset, when meeting pre-conditioned, described micro-base station
Hold consultation with described macro base station, determine the running time-frequency resource information for descending pilot frequency belonging to described micro-base station,
So that it is mutual to utilize described running time-frequency resource information and described terminal to carry out information.
Here, described macro base station, by holding consultation with the micro-base station in macro base station own range, determines distribution
To micro-base station suitably for the running time-frequency resource information of downlink synchronous pilot frequency；Wherein, suitably the meaning is:
The running time-frequency resource information that different micro-stations is used mutually staggers such that it is able to avoid interference.
Step 105, running time-frequency resource information is sent to the terminal of correspondence by described macro base station.
In the embodiment of the present invention, described method also includes: described macro base station is also by dominant micro-base station system letter
The mark of breath is sent to the terminal of correspondence.
Here, described macro base station notifies the micro-base station in described own range, intercepts the upper of described terminal transmission
Row signal (such as reference signal), and consult to determine one or more the micro-base station preferably accessed, Qi Zhongyou
Choosing to refer to that signal intensity meets pre-conditioned.The running time-frequency resource of downlink synchronous pilot frequency is believed by macro base station simultaneously
The mark of breath and dominant micro-base station system information is sent to terminal；The dominant meaning be with imply corresponding,
The wherein implicit meaning is: described macro base station and preferred micro-base station determine belong to each micro-base station descending with
Step pilot tone, wherein can be implied with the mark of micro-base station system information, such as PSS/SSS in downlink synchronous pilot frequency
Synchronizing sequence, in this case, the mark of the most implicit micro-base station system information.
In the embodiment of the present invention, terminal is accessed described macro base station by accidental channel access process by macro base station,
The common channel information list of the micro-base station in self coverage is sent to described terminal by described macro base station；
Described macro base station notifies the micro-base station in described own range, intercepts the upward signal that described terminal sends；Institute
State macro base station to hold consultation with the one or more micro-base station in own range, determine and belong to described one
The running time-frequency resource information for downlink synchronous pilot frequency of individual or more than one micro-base station；One or one
The above intensity that micro-base station is the described upward signal listened to meets micro-base station of default condition；Described
Described running time-frequency resource information is sent to the terminal of correspondence by macro base station；So, the skill that the embodiment of the present invention provides
Art scheme, it is possible to decrease the expense periodically sending signaling, thus improve the probability of micro-base station dormancy
Pollute with avoiding system information.
Embodiment two
Very near based on distance between macro base station and micro-base station under the super-intensive covering scene of following little base station, light
The time delay of fine passage and handle up close to ideal situation, therefore, is connect by Xn between macro base station and micro-base station
Mouthful may be considered relative ideal alternately, be i.e. considered there is no time delay and capacity constraint.On this basis
On, the present embodiment provides a kind of small-cell cut-in method, and the method can be effectively reduced wireless network side
Signalling exchange expense.
Fig. 2 be the embodiment of the present invention two small-cell cut-in method realize schematic flow sheet, as in figure 2 it is shown,
The method includes:
Step 201, terminal accesses macro base station by the RACH access process of standard；
Here, RACH access process refers to the function that media access control layer controls, and is in wireless money
Source controls the terminal of idle condition, can be connected, the most eventually with wireless network side foundation by random access procedure
End first passes through random access procedure based on competition and sets up wireless heterogeneous networks connection, by idle state transition
For connection status, then set up the connection of data communication, proceed by data communication.
Step 202, terminal obtains the common channel information row that described macro base station covers micro-base station of region
Table.
Here, step 202 is during being embodied as, and terminal can be to macro base station request common signal channel letter
Breath list, then macro base station request based on terminal, send common channel information list to terminal；Certainly,
Macro base station can send common channel information list to terminal on one's own initiative with self.
Here, common channel information list include the mark of micro-base station system information, Master Information Block (MIB),
The access informations such as system information block (SIB).
Step 203, macro base station notifies that the upward signal that subsequent terminal sends is intercepted in micro-base station；
Here, upward signal (such as uplink reference signals SRS etc.), downlink reference signal has two effects,
Wherein first effect is to measure for down channel quality, and second effect is estimated for down channel, eventually
Hold and carry out relevant detection and demodulation by downlink reference signal.In step 203, the most do not connect due to terminal
Entering to micro-base station, the upward signal that therefore terminal sends refers to the interactive information between terminal and macro base station, on
Row signal can include the information such as Sounding Reference Signal (Sounding Reference Signal, SRS).
Here, described macro base station notifies the micro-base station in described own range, intercepts the upper of described terminal transmission
Row signal, and consult to determine one or more the micro-base station preferably accessed.
Described macro base station and preferred micro-base station determine that the downlink synchronous pilot frequency belonging to each micro-base station (can be hidden
Containing the mark of micro-base station system information, such as PSS/SSS synchronizing sequence), macro base station is by descending same simultaneously
The running time-frequency resource information (or mark of dominant micro-base station system information) of step pilot tone is sent to terminal.
Step 204, the instruction based on macro base station of micro-base station, the upward signal sending terminal is intercepted；
Here, the instruction of described macro base station refers to that in step 203, macro base station notifies the instruction of micro-base station, described
Instruction is for intercepting the upward signal that subsequent terminal sends.
Step 205, micro-base station judges whether described upward signal meets default condition, obtains judged result；
Here, described default condition can refer to any condition about upward signal；Be embodied as
During, the condition preset can be the intensity about upward signal, and now, step 205 is: micro-base
Stand and judge that the intensity of described upward signal, whether more than or equal to the threshold value preset, obtains judged result.
Step 206, when described judged result shows that described upward signal meets default condition, described micro-
Holding consultation with described macro base station in base station, determines the time-frequency for downlink synchronous pilot frequency belonging to each micro-base station
Resource information, in order to utilize described running time-frequency resource information and described terminal to carry out information mutual；
Here, described each micro-base station refers to that the intensity of the upward signal received meets pre-conditioned micro-base
Stand.Continue to accept the example in step 205, when the intensity of described upward signal is more than or equal to the thresholding preset
During value, hold consultation with described macro base station in described micro-base station, determine belong to each micro-base station for descending with
The running time-frequency resource information of step pilot tone, in order to utilize described running time-frequency resource and described terminal to carry out information mutual.
Here, in step 206, hold consultation with macro base station in micro-base station, is to make macro base station to micro-base
Stand distribution suitably for the running time-frequency resource information of downlink synchronous pilot frequency；Wherein, the mode of negotiation can be passed through
Conventional signaling between micro-base station and macro base station or message, wherein suitably the meaning is: in different micro-station institutes
The running time-frequency resource used mutually staggers such that it is able to avoid interference.
Here, the functions such as downlink synchronous pilot frequency is the most descending Frequency Synchronization, time synchronized.
Step 207, macro base station obtains the mark of micro-base station system information, by described running time-frequency resource information and micro-
The mark of base station system information is sent to the terminal of correspondence；
Here, the mark of micro-base station system information can be that micro-base station is carried during step 206 is consulted
's.During being embodied as, step 207 can be connected described with the RRC of terminal by macro base station
The mark of running time-frequency resource information and dominant micro-base station system information informs terminal.
Here, in step 207, macro base station can not also send the mark of dominant micro-base station system information,
At this moment, micro-base station is needed to be implied with the mark of micro-base station system information in the downlink synchronous pilot frequency be sent to terminal
Knowing, the mark that such terminal can also get micro-base station system information from downlink synchronous pilot frequency is (implicit
The mark of micro-base station system information) so that terminal obtains the mark of micro-base station system information.
Step 208, described terminal is according to the mark of micro-base station system information and described common channel information list
Determine the micro-base station of target；
Here, described terminal selects from public access information list according to described micro-base station system message identification
Meet the public access information of condition, and it is micro-that micro-base station corresponding for described public access information is defined as target
Base station
Here, include the access informations such as the mark of micro-base station system information due to common channel information list,
Therefore, terminal can be according to the relevant access information of the mark inquiry micro-base station of target of micro-base station system information.
Step 209, described terminal is based on the micro-base station of target described in described public access information access.
Here, described public access information at least includes one of information: access lead, access running time-frequency resource,
The information such as contention resolved strategy.
In the embodiment of the present invention, described method also includes: described terminal receives the descending of described macro base station transmission
The running time-frequency resource information of synchronizing pilot；Described terminal connects according to the running time-frequency resource information of described downlink synchronous pilot frequency
Receive the downlink synchronous pilot frequency information that micro-station sends, and complete down-going synchronous according to described downlink synchronous pilot frequency information.
Here, described downlink synchronous pilot frequency is mainly used in the functions such as descending Frequency Synchronization, time synchronized.
Here, described terminal receives under the transmission of micro-station according to the running time-frequency resource information of described downlink synchronous pilot frequency
Row synchronizing pilot information, including: described terminal utilizes described running time-frequency resource information, receives the micro-base of described target
Stand and use the downlink synchronous pilot frequency information of non-broadcastedly transmission.
Here, described complete down-going synchronous according to described downlink synchronous pilot frequency information, including: under described
Row synchronizing pilot information carries out downgoing time, frequency, sampling clock synchronization, and ascending power and estimates.
From the technical scheme of embodiment two offer it can be seen that macro base station covers to macro base station described in terminal broadcast
In the range of the common channel information list of all of micro-base station, the micro-base station in described macro base station coverage
Only the mark of micro-base station system information need to be sent to macro base station belonging to self, and will be with descending access pilot tone
Information sends terminal；Self is linked into micro-base station by the information that last terminal sends according to macro base station and micro-base station
In.As can be seen here, descending access pilot frequency information only need to be sent to terminal by micro-base station, it is not necessary to use broadcast to send out
The mode sent, thus reduce the expense periodically sending signaling, and then improve the probability of micro-base station dormancy.
Embodiment three
Based on aforesaid small-cell cut-in method, the embodiment of the present invention reoffers a kind of macro base station, in macro base station
The first access unit, the first transmitting element, first determine that unit and the second transmitting element can be by grand
Processor in base station realizes；The most also can be realized by concrete logic circuit；At specific embodiment
During, processor can be central processing unit (CPU), microprocessor (MPU), Digital Signal Processing
Device (DSP) or field programmable gate array (FPGA) etc..
Fig. 3 is the composition structural representation of the embodiment of the present invention three macro base station, as it is shown on figure 3, this macro base station
300 include first access unit the 301, first transmitting element 302, notification unit 303, first determine unit
304 and second transmitting element 305, wherein:
Described first access unit 301, for accessing macro base station by accidental channel access process by terminal；
Described first transmitting element 302, for by the common channel information of the micro-base station in self coverage
List is sent to described terminal；
Described notification unit 303, the micro-base station in notifying described own range, intercept described terminal and send out
The upward signal sent；
Described first determines unit 304, for entering with the one or more micro-base station in own range
Row is consulted, and determines that the time-frequency for downlink synchronous pilot frequency belonging to one or more than one micro-base station provides
Source information；One or the intensity that more than one micro-base station is the described upward signal listened to meet pre-
If micro-base station of condition；
Described second transmitting element 305, for being sent to the terminal of correspondence by pilot tone running time-frequency resource information.
In the embodiment of the present invention, described macro base station also includes the 3rd transmitting element, for also by dominant micro-base
The mark of system information of standing is sent to the terminal of correspondence.
In the embodiment of the present invention, terminal is accessed grand by accidental channel access process by the first access unit 301
Base station；The common channel information list of the micro-base station in self coverage is sent by the first transmitting element 302
To described terminal；Notification unit 303 notifies the micro-base station in described own range, intercepts described terminal and sends
Upward signal；First determines that unit 304 is carried out with the one or more micro-base station in own range
Consult, determine and belong to one or the running time-frequency resource for downlink synchronous pilot frequency of more than one micro-base station
Information；Described running time-frequency resource information is sent to the terminal of correspondence by the second transmitting element 305；So, it is possible
Reduce the expense periodically sending signaling, thus improve the probability of micro-base station dormancy and avoid system information
Pollute.
It need to be noted that: the description of above macro base station embodiment, real with above-mentioned small-cell cut-in method
The description executing example is similar, has the beneficial effect that same small-cell cut-in method embodiment is similar, the most not
Repeat.For the ins and outs not disclosed in macro base station embodiment of the present invention, refer to small-cell of the present invention
The description of cut-in method embodiment and understand, for saving length, therefore repeat no more.
Embodiment four
Based on aforesaid small-cell cut-in method, the embodiment of the present invention reoffers a kind of terminal, the in terminal
Two access units, the second reception unit, the 3rd reception unit and second determine that unit can be by terminal
Processor realize；The most also can be realized by concrete logic circuit；During specific embodiment,
Processor can be central processing unit, microprocessor, digital signal processor or field programmable gate array etc..
Fig. 4 is the composition structural representation of the embodiment of the present invention four terminal, as shown in Figure 4, and this terminal 400
Including the second access unit 401, second receive unit the 402, the 3rd receive unit 403 or acquiring unit 403,
Second determines unit 404 and access unit 405, wherein:
Described second access unit 401, for accessing self belonging to self by accidental channel access process
In the range of macro base station；
Described second receives unit 402, for receiving the described macro base station coverage that described macro base station sends
The common channel information list of interior micro-base station；
Described 3rd receives unit 403, for receiving dominant micro-base station system letter that described macro base station sends
The mark of breath, or, described acquiring unit 403, for the downlink synchronous pilot frequency information sent from micro-base station
Obtain the mark of implicit micro-base station system information；
Described second determines unit 404, for the mark according to micro-base station system information and described common signal channel
Information list determines the micro-base station of target.
Described access unit 405, for based on the micro-base station of target described in described public access information access.
In the embodiment of the present invention, described terminal also includes the 4th reception unit and interactive unit, wherein:
Described 4th receives unit, for receiving the running time-frequency resource of the downlink synchronous pilot frequency that described macro base station sends
Information；
Described interactive unit, receives, for information, the downlink synchronous pilot frequency information that micro-station sends, and according to described
Downlink synchronous pilot frequency information completes down-going synchronous.
In the embodiment of the present invention, described interactive unit includes receiver module and processing module, wherein:
Described receiver module, is used for utilizing described running time-frequency resource information to receive the employing of described target micro-base station non-extensively
The downlink synchronous pilot frequency information that broadcast mode sends；
Described processing module, for carrying out downgoing time, frequency according to described downlink synchronous pilot frequency information, adopt
Sample clock synchronizes, and ascending power is estimated.
In the embodiment of the present invention, described second determines unit, for according to described micro-base station system message identification
From public access information list, select to meet the public access information of condition, and by described public access information
Corresponding micro-base station is defined as the micro-base station of target.
Here, described public access information at least includes one of information:
Access lead, access running time-frequency resource, contention resolved strategy.
It need to be noted that: the description of above terminal embodiment, implement with above-mentioned small-cell cut-in method
The description of example is similar, has the beneficial effect that same small-cell cut-in method embodiment is similar, does not does
Repeat.For the ins and outs not disclosed in terminal embodiment of the present invention, refer to small-cell of the present invention and access
The description of embodiment of the method and understand, for saving length, therefore repeat no more.
Embodiment five
Based on aforesaid small-cell cut-in method, the embodiment of the present invention reoffers a kind of micro-base station, in micro-base station
Intercept unit, judging unit, the 3rd determine that unit can be realized by the processor in micro-base station；
The most also can be realized by concrete logic circuit；During specific embodiment, during processor can be
Central processor, microprocessor, digital signal processor or field programmable gate array etc..
Fig. 5 is the composition structural representation of the micro-base station of the embodiment of the present invention five, as it is shown in figure 5, this micro-base station
500 include intercepting unit 501, judging unit 502 and the 3rd determines unit 503, wherein:
Described intercept unit 501, intercept self coverage for instruction based on self affiliated macro base station
The upward signal that interior terminal sends；
Described judging unit 502, for judging whether described upward signal meets default condition, is sentenced
Disconnected result；
Described 3rd determines unit 503, for when described judged result, to show that described upward signal meets default
Condition time, hold consultation with described macro base station determine belong to each micro-base station for downlink synchronous pilot frequency
Running time-frequency resource information, in order to utilize described running time-frequency resource information and described terminal to carry out information mutual.
It need to be noted that: the description of above micro-base station embodiment, real with above-mentioned small-cell cut-in method
The description executing example is similar, has the beneficial effect that same small-cell cut-in method embodiment is similar, the most not
Repeat.The ins and outs not disclosed in base station embodiment micro-for the present invention, refer to small-cell of the present invention
The description of cut-in method embodiment and understand, for saving length, therefore repeat no more.
Should be understood that during description is in the whole text that " embodiment " or " embodiment " mentioned means with real
Execute the relevant special characteristic of example, structure or characteristic to be included at least one embodiment of the present invention.Therefore,
Not necessarily refer in " in one embodiment " or " in one embodiment " that entire disclosure occurs everywhere
Identical embodiment.Additionally, these specific features, structure or characteristic can combine in any suitable manner
In one or more embodiments.Should be understood that in various embodiments of the present invention, the sequence of above-mentioned each process
Number size be not meant to the priority of execution sequence, the execution sequence of each process should be patrolled with its function and inherence
Collect and determine, and the implementation process of the embodiment of the present invention should not constituted any restriction.
In several embodiments provided herein, it should be understood that disclosed equipment and method, can
To realize by another way.Apparatus embodiments described above is only schematically, such as, and institute
Stating the division of unit, be only a kind of logic function and divide, actual can have other dividing mode when realizing,
As: multiple unit or assembly can be in conjunction with, or it is desirably integrated into another system, or some features can be neglected
Slightly, or do not perform.It addition, the coupling each other of shown or discussed each ingredient or directly coupling
Close or communication connection can be the INDIRECT COUPLING by some interfaces, equipment or unit or communication connection, can
Be electrical, machinery or other form.
The above-mentioned unit illustrated as separating component can be or may not be physically separate, as
The parts that unit shows can be or may not be physical location；Both may be located at a place, it is possible to
To be distributed on multiple NE；Part or all of unit therein can be selected according to the actual needs
Realize the purpose of the present embodiment scheme.
It addition, each functional unit in various embodiments of the present invention can be fully integrated in a processing unit,
Can also be that each unit is individually as a unit, it is also possible to two or more unit are integrated in one
In individual unit；Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ hardware adds soft
The form of part functional unit realizes.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can
Completing with the hardware relevant by programmed instruction, aforesaid program can be stored in embodied on computer readable storage
In medium, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage is situated between
Matter includes: movable storage device, read only memory (Read Only Memory, ROM), magnetic disc or
The various medium that can store program code such as CD.
Or, if the above-mentioned integrated unit of the present invention is using the form realization of software function module and as independent
Production marketing or use time, it is also possible to be stored in a computer read/write memory medium.Based on so
Understanding, the part that prior art is contributed by the technical scheme of the embodiment of the present invention the most in other words can
Embodying with the form with software product, this computer software product is stored in a storage medium, bag
Include some instructions with so that a computer equipment (can be personal computer, server or network
Equipment etc.) perform all or part of of method described in each embodiment of the present invention.And aforesaid storage medium bag
Include: the various media that can store program code such as movable storage device, ROM, magnetic disc or CD.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with described scope of the claims.
Claims (18)
1. a small-cell cut-in method, it is characterised in that described method includes:
Terminal is accessed described macro base station by accidental channel access process by macro base station, and described macro base station is by self
The common channel information list of the micro-base station in coverage is sent to described terminal；
Described macro base station notifies the micro-base station in described own range, intercepts the upward signal that described terminal sends；
Described macro base station is held consultation with the one or more micro-base station in own range, determines and belongs to
One or the running time-frequency resource information for downlink synchronous pilot frequency of more than one micro-base station；One
Or the intensity that more than one micro-base station is the described upward signal listened to meets micro-base of default condition
Stand；
Described running time-frequency resource information is sent to the terminal of correspondence by described macro base station.
Method the most according to claim 1, it is characterised in that described method also includes:
The mark of dominant micro-base station system information is also sent to the terminal of correspondence by described macro base station.
3. a small-cell cut-in method, it is characterised in that described method includes:
Terminal passes through the macro base station in the range of self is accessed belonging to self by accidental channel access process；
Described terminal receives the public letter of the micro-base station in the described macro base station coverage that described macro base station sends
Road information list；
Described terminal receives the mark of dominant micro-base station system information that described macro base station sends, or from micro-
The mark of micro-base station system information that the downlink synchronous pilot frequency acquisition of information that base station sends is implicit；
Described terminal determines mesh according to mark and the described common channel information list of described micro-base station system information
Mark micro-base station；
Described terminal is based on the micro-base station of target described in described public access information access.
Method the most according to claim 3, it is characterised in that described method also includes:
Described terminal receives the running time-frequency resource information of the downlink synchronous pilot frequency that described macro base station sends；
Described terminal receives, according to the running time-frequency resource information of described downlink synchronous pilot frequency, the down-going synchronous that micro-station sends
Pilot frequency information, and complete down-going synchronous according to described downlink synchronous pilot frequency information.
Method the most according to claim 4, it is characterised in that described terminal is according to described down-going synchronous
The running time-frequency resource information of pilot tone receives the downlink synchronous pilot frequency information that micro-station sends, including:
Described terminal utilizes described running time-frequency resource information, receives the micro-base station of described target and uses non-broadcastedly to send out
The downlink synchronous pilot frequency information sent；
Described complete down-going synchronous according to described downlink synchronous pilot frequency information, including: according to described down-going synchronous
Pilot frequency information carries out downgoing time, frequency, sampling clock synchronization, and ascending power and estimates.
6. according to the method described in any one of claim 3 to 5, it is characterised in that described terminal is according to institute
Mark and the described common channel information list of stating micro-base station system information determine the micro-base station of target, including:
Described terminal selects to meet bar according to described micro-base station system message identification from public access information list
The public access information of part, and micro-base station corresponding for described public access information is defined as the micro-base station of target.
7. according to the method described in any one of claim 3 to 5, it is characterised in that described public access is believed
Cease and at least include one of information:
Access lead, access running time-frequency resource, contention resolved strategy.
8. a small-cell cut-in method, it is characterised in that described method includes:
The upper of the terminal transmission in self coverage is intercepted in the instruction based on self affiliated macro base station of micro-base station
Row signal；
Described micro-base station judges whether described upward signal meets default condition, obtains judged result；
When described judged result shows that described upward signal meets default condition, described micro-base station is with described
Macro base station is held consultation, and determines the running time-frequency resource information for descending pilot frequency belonging to described micro-base station, in order to
Described running time-frequency resource information and described terminal is utilized to carry out information mutual.
Method the most according to claim 8, it is characterised in that described micro-base station judges described up letter
Number whether meet default condition, obtain judged result, including:
Described micro-base station judges that the intensity of described upward signal, whether more than or equal to the threshold value preset, is sentenced
Disconnected result.
Method the most according to claim 8 or claim 9, it is characterised in that described upward signal includes letter
Road detection reference signal.
11. 1 kinds of macro base stations, it is characterised in that described macro base station includes the first access unit, the first transmission
Unit, notification unit, first determine unit and the second transmitting element, wherein:
Described first access unit, for accessing macro base station by accidental channel access process by terminal；
Described first transmitting element, for by the common channel information list of the micro-base station in self coverage
It is sent to described terminal；
Described notification unit, the micro-base station in notifying described own range, intercept what described terminal sent
Upward signal；
Described first determines unit, for assisting with the one or more micro-base station in own range
Business, determines that the running time-frequency resource for downlink synchronous pilot frequency belonging to one or more than one micro-base station is believed
Breath；One or the intensity that more than one micro-base station is the described upward signal listened to meet default
Micro-base station of condition；
Described second transmitting element, for being sent to the terminal of correspondence by pilot tone running time-frequency resource information.
12. macro base stations according to claim 11, it is characterised in that described macro base station also includes the 3rd
Transmitting element, for being also sent to the terminal of correspondence by the mark of dominant micro-base station system information.
13. 1 kinds of terminals, it is characterised in that described terminal include the second access unit, second receive unit,
3rd receive unit or acquiring unit, second determine unit and access unit, wherein:
Described second access unit, for accessing scope belonging to self by accidental channel access process by self
Interior macro base station；
Described second receives unit, in receiving the described macro base station coverage that described macro base station sends
The common channel information list of micro-base station；
Described 3rd receives unit, for receiving dominant micro-base station system information of described macro base station transmission
Mark, or, described acquiring unit, implies for the downlink synchronous pilot frequency acquisition of information sent from micro-base station
The mark of micro-base station system information；
Described second determines unit, for the mark according to micro-base station system information and described common channel information
List determines the micro-base station of target；
Described access unit, for based on the micro-base station of target described in described public access information access.
14. terminals according to claim 13, it is characterised in that described terminal also includes the 4th reception
Unit and interactive unit, wherein:
Described 4th receives unit, for receiving the running time-frequency resource of the downlink synchronous pilot frequency that described macro base station sends
Information；
Described interactive unit, for utilizing described running time-frequency resource information to receive the downlink synchronous pilot frequency that micro-station sends
Information, and complete down-going synchronous according to described downlink synchronous pilot frequency information.
15. terminals according to claim 14, it is characterised in that described interactive unit includes receiving mould
Block and processing module, wherein:
Described receiver module, is used for utilizing described running time-frequency resource information, receives the micro-base station of described target and uses non-
The downlink synchronous pilot frequency information that broadcast mode sends；
Described processing module, for carrying out downgoing time, frequency according to described downlink synchronous pilot frequency information, adopt
Sample clock synchronizes, and ascending power is estimated.
16. according to the terminal described in any one of claim 13 to 15, it is characterised in that described second true
Cell, for selecting to meet bar according to described micro-base station system message identification from public access information list
The public access information of part, and micro-base station corresponding for described public access information is defined as the micro-base station of target.
17. according to the terminal described in any one of claim 13 to 15, it is characterised in that described public connect
Enter information and at least include one of information:
Access lead, access running time-frequency resource, contention resolved strategy.
18. 1 kinds of micro-base stations, it is characterised in that described micro-base station include intercepting unit, judging unit,
Three determine unit, wherein:
Described intercept unit, intercept in self coverage for instruction based on self affiliated macro base station
The upward signal that terminal sends；
Described judging unit, for judging whether described upward signal meets default condition, obtains judging knot
Really；
Described 3rd determines unit, for showing that described upward signal meets default bar when described judged result
During part, hold consultation with described macro base station and determine the time-frequency for downlink synchronous pilot frequency belonging to each micro-base station
Resource information, in order to utilize described running time-frequency resource information and described terminal to carry out information mutual.
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| CN201510217269.XA CN106211342B (en) | 2015-04-30 | 2015-04-30 | A kind of small cell accessing method and terminal, base station |
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| CN201510217269.XA CN106211342B (en) | 2015-04-30 | 2015-04-30 | A kind of small cell accessing method and terminal, base station |
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| WO2018176218A1 (en) * | 2017-03-28 | 2018-10-04 | 北京小米移动软件有限公司 | Signal period configuration method and device |
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| CN103379496A (en) * | 2012-04-27 | 2013-10-30 | 中国移动通信集团公司 | Method, system and device for controlling work condition of small base station |
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