CN106341899A - Method and device for performing random access based on unauthorized carrier - Google Patents
Method and device for performing random access based on unauthorized carrier Download PDFInfo
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- CN106341899A CN106341899A CN201510414912.8A CN201510414912A CN106341899A CN 106341899 A CN106341899 A CN 106341899A CN 201510414912 A CN201510414912 A CN 201510414912A CN 106341899 A CN106341899 A CN 106341899A
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- 238000000034 method Methods 0.000 title claims abstract description 113
- 230000004044 response Effects 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000002860 competitive effect Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 5
- 230000001934 delay Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 18
- 238000010276 construction Methods 0.000 description 8
- 230000000977 initiatory effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 108091006146 Channels Proteins 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
The invention provides a method and a device for performing random access based on an unauthorized carrier. The method comprises the steps that: a terminal receives a first notification message sent by a base station for indicating to perform a random access process in an auxiliary serving cell, and obtains resources of the auxiliary serving cell, wherein the auxiliary serving cell is a cell based on the unauthorized carrier; the terminal sends, on the obtained resources, a random access preamble to the base station; the terminal opens a reception window to receive a random access response (RAR) message sent by the base station; and when a random access preamble carried by the RAR message is consistent with the random access preamble sent by terminal, the random access process performed by the terminal in the auxiliary serving cell ends normally. The method and the device provided by the invention solves the problem in the relevant art that the random access process is difficult to perform on the unauthorized carrier, thereby filling in the gap in the relevant art.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of based on unauthorized carrier wave execute Stochastic accessing method and
Device.
Background technology
In Long Term Evolution (long term evolution, referred to as lte) system, it is in the user equipment of connection status
(user equipment, referred to as ue) sends before data to base station, needs to obtain and the uplink synchronous of base station and descending
Synchronous.Here, uplink synchronous are realized by executing random access procedure, wherein, get the transmission time simultaneously
Lead (time advance, referred to as ta), down-going synchronous are measured to certain cell by ue to be realized,
Wherein, ta is mainly used in allowing ue determine the data is activation moment.
Fig. 1 is random access procedure schematic diagram in lte system in correlation technique, as shown in figure 1, random access procedure can
To pass through to send Physical Downlink Control Channel signaling (pdcch order) initiation or media access control layer by base station
(medium access control, referred to as mac) signaling is initiated, step s1 in such as Fig. 1.When can utilize
Pdcch order or wireless heterogeneous networks (radio resource control, referred to as rrc) signaling are divided for ue
When joining special random access preamble (random access preamble, referred to as rap) code, then Stochastic accessing is referred to as
The Stochastic accessing of non conflicting, in this case, special random access preamble code can only be distributed by base station, can pass through
Pdcch order or switching command to configure special random access preamble code for ue；When ue needs to select to connect at random
When entering lead code, then Stochastic accessing is the Stochastic accessing of conflict, in this case, not execution step s1, directly hold
Row step s2.
The random access resource that ue selects includes: selects random access lead code and Physical Random Access Channel (physical
Random access channel, referred to as prach) time-frequency domain resources etc..For the Stochastic accessing of non conflicting,
Do not solve the solution process conflicted, but distribute what special random access preamble code was realized to ue by network side,
Therefore, handling process is as shown in Figure 1, comprising: two steps of step s1～s2；Random access procedure such as Fig. 1 of conflict
Shown, comprising: tetra- steps of step s2～s5, wherein, the effect of step s4 and s5 is used to solve conflict.
After introducing carrier aggregation technology (carrier aggregation, referred to as ca), the ue being in connection status can
To be communicated with source base station by multiple component carriers (component carriers, referred to as cc) simultaneously, introduce
After ca technology, also introduce main serving cell (primary cell, referred to as pcell) and auxiliary serving cell (secondary
Cell, referred to as scell).Due to the lifting of data volume, the number of scell can increase, and such as increases to four, accordingly
Ground, application conditions also can relax, such as up can support remote radio head (remote radio head, referred to as
Rrh) and retransmit (repeater) technology, a Timing Advance ta is unable to solve problem, can introduce multiple ta
Solve problem.Manage for convenience, be included into a ta group using the Serving cell of identical ta, comprise the ta of pcell
Group is referred to as ptag, and the ta group not comprising pcell is referred to as stag.Ue executes on the pcell in ptag at random
Access opportunity execute Stochastic accessing when only one of which ta opportunity, on stag execute Stochastic accessing when
Machine only one of which it is simply that network side notifies, i.e. the random access procedure of only non conflicting.Stochastic accessing mistake on stag
Step s1 in Cheng Zhong, Fig. 1 is sent by dispatching cell, and step s2 is sent by related scell, step
S3 is sent out by pcell.
With the rapid growth of data service, in the near future, authorize frequency spectrum will can not bear so huge data volume；
So lte operator considers deployment lte in unlicensed spectrum resource (unlicensed carrier), by unauthorized frequency
Compose and to share the data traffic authorizing in carrier wave.Unauthorized carrier wave (exempting to authorize frequency spectrum) refers to meeting government department (e.g.,
State Radio Regulatory Commission) under pertinent regulations (radio control) it is not necessary to authorize the frequency spectrum that just can directly use
(or carrier wave).For example, microwave oven, remote toy aircraft, wireless mouse, Wireless Keyboard, high-fidelity wireless networking (wireless
Fidelity, referred to as wifi) etc. all employ unauthorized carrier wave.In other instances, unauthorized carrier wave needs to pass through
Competition could use.If resource is not arrived in competition for base station (including wifi access point), unauthorized load can not be used
Ripple.Unauthorized carrier wave and mandate carrier wave can be using it is also possible to be made by way of carrier aggregation by way of dual link
With unauthorized carrier wave generally as the supplement of data transfer, that is, authorizes carrier wave as main serving cell, unauthorized carrier wave is made
For auxiliary serving cell.
For being difficult in correlation technique the problem of random access procedure is executed on unauthorized carrier wave, not yet there is effective solution
Scheme.
Content of the invention
The invention provides a kind of method and device executing Stochastic accessing based on unauthorized carrier wave, at least to solve related skill
It is difficult in art the problem of random access procedure is executed on unauthorized carrier wave.
According to an aspect of the invention, it is provided a kind of method that Stochastic accessing is executed based on unauthorized carrier wave, comprising:
Terminal receives base station and sends the first notification message executing random access procedure for instruction in assistant service cell, and obtains
Get the resource of described assistant service cell, wherein, described assistant service cell is the cell based on described unauthorized carrier wave；
Described terminal sends random access lead code to described base station in the resource getting；Described terminal is opened reception window and is connect
Receive the accidental access response rar message that described base station sends；The random access lead code carrying in described rar message
When the random access lead code that sends to base station with described terminal is consistent, described terminal is random in described assistant service cell
Access procedure normal termination.
Further, described terminal gets the resource of described assistant service cell and includes: described terminal receives described base station
Second notification message, wherein, carry described base station in described second notification message and compete in described assistant service cell
The resource arriving；Or, described terminal receive that described base station sends for the request in described assistant service cell competitive resource
Message, and the resource of described assistant service cell is competed according to described request message, and described in the resource notification that competition is arrived
Base station.
Further, described terminal sends random access lead code to described base station in the resource getting and includes: described
Terminal receives described first notification message that described base station sends, and wherein, carries described auxiliary in described first notification message
Help the mark of Serving cell and described random access lead code；Described terminal is little in corresponding assistant service according to described mark
Compete in area and described random access lead code is sent on the first subframe of resource.
Further, receive base station and send in terminal and execute the of random access procedure for instruction in assistant service cell
Before one notification message, described inclusion: described terminal receives the third notice message that described base station sends, wherein, described
One or more random access lead codes that described base station is that auxiliary Serving cell is reserved are carried in third notice message.
Further, described terminal sends random access lead code to base station in the resource getting and includes: described terminal
Receive described first notification message that described base station sends, wherein, carry in described first notification message and described connect at random
Enter the random access lead code in lead code；Described terminal determines according to described random access lead code needs execution to connect at random
Enter the cell of process if it is determined that cell be described assistant service cell, then compete in described assistant service cell
Described random access lead code is sent in first subframe of resource.
Further, described terminal sends random access lead code to base station in the resource getting and includes: described the
When one subframe is incomplete subframe, described terminal is delayed a subframe and is sent described random access lead code；Or, described
Assistant service cell on unauthorized carrier wave competes the first subframe of resource and first leading to of not receiving that described base station sends
When knowing message, or, the assistant service cell on described unauthorized carrier wave competes first subframe and simultaneously of resource
When receiving the first notification message that described base station sends, the next one after receiving described first notification message for the described terminal
Subframe sends described random access lead code.
Further, open in described terminal and receive the accidental access response rar message that base station described in window reception sends
Afterwards, methods described also includes；When the resource of described assistant service cell is used up, described terminal suspends described reception window
The change of mouth, until competing the resource of described assistant service cell again.
Further, after the random access procedure normal termination in described assistant service cell of described terminal, described side
Method also includes；Because the resource of the described assistant service cell getting is used up and is not got described resource, institute again
When stating terminal and failing to be received again by described response message, described terminal resends and does not adjust during described random access lead code
Transmit power.
According to another aspect of the present invention, provide management a kind of method executing Stochastic accessing based on unauthorized carrier wave, bag
Include: base station sends, to terminal, the first notification message executing random access procedure for instruction in assistant service cell, its
In, carry the mark for indicating described assistant service cell in the first notification message, described assistant service cell is base
Cell in described unauthorized carrier wave；Described base station obtains the resource of described assistant service cell, and described resource is sent
To described terminal, wherein, described resource is used for described terminal and sends random access lead code；Described base station is to described terminal
Send accidental access response rar message, wherein, in described rar message, carry random access lead code.
According to a further aspect of the invention, there is provided a kind of device executing Stochastic accessing based on unauthorized carrier wave, application
In end side, comprising: first processing module, for receive base station send for instruction execute in assistant service cell with
First notification message of machine access procedure, and get the resource of described assistant service cell, wherein, described assistant service
Cell is the cell based on described unauthorized carrier wave；First sending module, in the resource getting to described base station
Send random access lead code；Receiver module, receives, for opening, the accidental access response that base station described in window reception sends
Rar message；Performing module, for the random access lead code and described terminal that carry in described rar message to base
When the random access lead code sending of standing is consistent, the random access procedure normal termination of execution in described assistant service cell.
According to a further aspect of the invention, there is provided a kind of terminal executing Stochastic accessing based on unauthorized carrier wave, it is used for
Base station side, comprising: the second sending module, connects at random for sending to execute in assistant service cell for instruction to terminal
Enter the first notification message of process, wherein, in the first notification message, carry the mark for indicating described assistant service cell
Know, described assistant service cell is the cell based on described unauthorized carrier wave；Second processing module, described auxiliary for obtaining
Help the resource of Serving cell, and described resource is sent to described terminal, wherein, described resource is used for described terminal and sends
Random access lead code；3rd sending module, for sending accidental access response rar message to described terminal, wherein,
Random access lead code is carried in described rar message.
In the present invention, terminal receives base station and sends and executes the of random access procedure for instruction in assistant service cell
One notification message, and get the resource of assistant service cell, and this assistant service cell is the cell of unauthorized carrier wave,
This resource is the resource that terminal is used for sending random access lead code, and after random access lead code is sent base station, this is eventually
End receives the rar message of this base station, and the random access lead code carrying in rar message is connect at random with what terminal sent
Enter lead code consistent when, terminal random access procedure normal termination in assistant service cell；Phase is solved by the present invention
It is difficult in the technology of pass the problem of random access procedure is executed on unauthorized carrier wave.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention
Schematic description and description be used for explaining the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is random access procedure schematic diagram in lte system in correlation technique；
Fig. 2 is the according to embodiments of the present invention method flow diagram one executing Stochastic accessing based on unauthorized carrier wave；
Fig. 3 is the according to embodiments of the present invention method flow diagram two executing Stochastic accessing based on unauthorized carrier wave；
Fig. 4 is the structured flowchart one of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave；
Fig. 5 is the alternative construction block diagram one of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave；
Fig. 6 is the alternative construction block diagram two of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave；
Fig. 7 is the alternative construction block diagram three of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave；
Fig. 8 is the alternative construction block diagram four of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave；
Fig. 9 is the structured flowchart two of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave；
Figure 10 is the method flow diagram according to alternative embodiment one of the present invention；
Figure 11 is the method flow diagram according to alternative embodiment two of the present invention.
Specific embodiment
To describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings do not conflicted
Under condition, the embodiment in the application and the feature in embodiment can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second "
Etc. being for distinguishing similar object, without for describing specific order or precedence.
Provide a kind of method that Stochastic accessing is executed based on unauthorized carrier wave in the present embodiment, Fig. 2 is according to the present invention
Embodiment based on unauthorized carrier wave execute Stochastic accessing method flow diagram one, as shown in Fig. 2 this flow process include as follows
Step:
Step s202: terminal receives base station and sends and executes the of random access procedure for instruction in assistant service cell
One notification message, and get the resource of assistant service cell, wherein, assistant service cell is based on unauthorized carrier wave
Cell；
Step s204: terminal sends random access lead code to base station according to mark in the resource getting；
Step s206: terminal is opened and received the accidental access response rar message that window reception base station sends；
Step s208: before the Stochastic accessing that the random access lead code carrying in rar message and terminal send to base station
When leading code is consistent, terminal random access procedure normal termination in assistant service cell.
By step s202 of the present embodiment to step s208, terminal reception base station sends little in assistant service for indicating
First notification message of execution random access procedure in area, and get the resource of assistant service cell, and this assistant service
Cell is the cell of unauthorized carrier wave, and this resource is the resource that terminal is used for sending random access lead code, is being connect at random
After entering lead code transmission base station, this terminal receives the rar message of this base station, the Stochastic accessing carrying in rar message
When lead code is consistent with the random access lead code that terminal sends, terminal random access procedure in assistant service cell is normal
Terminate；Solve the problems, such as to be difficult in correlation technique execute random access procedure on unauthorized carrier wave by the present embodiment,
Fill up the blank in correlation technique.
It should be noted that one of the reason there is assistant service cell the base station being related in the present embodiment is, due to business
Amount increases, and base station according to the reporting measurement reports of terminal, increases assistant service cell to terminal, and before this terminal be with
The main serving cell of this base station establishes connection.
The terminal being related in the present embodiment step s202 is got to the mode of the resource of assistant service cell, at this
In one optional embodiment of embodiment, can be achieved in that
Mode one: terminal receives the second notification message of base station, wherein, carries base station in auxiliary clothes in second notification message
The resource competing in business cell.
Mode two: terminal receive base station send for the request message in assistant service cell competitive resource, and according to please
Ask the resource of message race assistant service cell, and the resource notification base station that competition is arrived.
From aforesaid way one and mode two, the mode that terminal can get resource can be to compete resource by base station
Base station notifies to terminal again afterwards, can also be the resource being competed this assistant service cell by terminal itself, that is, terminal can be led
Dynamic competitive resource can also be passively to accept the resource that base station competes, and this resource can be the frequency information of resource, time
Information etc..
And in another optional embodiment of the present embodiment, for the terminal being related in step s204 according to mark
The mode of random access lead code is sent on the resource getting, can in the following way three and mode four realizing:
Mode three: terminal receives the first notification message that base station is sent by main serving cell, wherein, this first notice disappears
Mark and the random access lead code of assistant service cell is carried in breath；Terminal is little in corresponding assistant service according to mark
Random access lead code is sent on competition is to the first subframe of resource in area.
Mode four: send in terminal reception base station and execute the first of random access procedure for instruction in assistant service cell
Before notification message, comprising: terminal receives the third notice message that base station sends, and wherein, carries in third notice message
There are one or more random access lead codes that base station is that auxiliary Serving cell is reserved.
Terminal sends random access lead code to base station in the resource getting and includes: terminal receives first that base station sends
Notification message, wherein, carries random access lead code in the first notification message；Terminal is true according to random access lead code
Surely need execute random access procedure cell if it is determined that cell be auxiliary Serving cell, then little in this assistant service
Random access lead code is sent on the first subframe of the resource that area competes.
From aforesaid way three and mode four, the random access lead code that terminal gets in mode three can be base station
By sending a notification message, and carry random access lead code in this message and mate with this random access lead code
Assistant service cell ID, can give assistant service cell reserved random access guiding by base station in mode four in advance
Code, such terminal receives and just learns during random access lead code that assistant service corresponding with this random access lead code is little
Area.
Send the mode of random access lead codes based on two kinds in aforesaid way three and mode four, in the present embodiment normally
In the case of, terminal be competition to the first subframe of resource on send random access lead code, and the present embodiment other
In application scenarios, to send random access lead code not by the first subframe, the application scenarios of which may include that
Scene one: when the first subframe is incomplete subframe, terminal sends random access lead code after delaying a subframe；
Scene two: in the first subframe of competition to resource and when not receiving the first notification message that base station sends, or, competing
Strive resource first subframe and also receive simultaneously base station transmission the first notification message when, terminal receive first lead to
Know that the next subframe after message sends random access lead code.
Additionally, the response message being related in the present embodiment can also carry the time advance of the random lead code of base station calculating
Amount ta, therefore, terminal random access procedure normal termination in assistant service cell in step s206 in the present embodiment
Afterwards, terminal sends data according to ta in assistant service cell.
Receive window reception base station in response for being related in the present embodiment open in terminal in random access lead code sound
After answering message, the method for the present embodiment also includes；When the resource of the assistant service cell that terminal gets is used up, eventually
The change receiving window is suspended at end, until competing the resource of assistant service cell again.
Wherein, for which, may is that terminal is sending random access guiding in application scenarios of the present embodiment
After code, the 3rd subframe opens reception window, and window size can configure, and is such as currently configured as 8 subframes, i.e. window size
For 8 subframes.3 subframes after window is opened, using finishing, then terminal stops window to the resource competing
Increase, fix in 3 subframe lengths
And be related in the present embodiment after terminal random access procedure normal termination in assistant service cell, this
The method of embodiment also includes；Use up and do not get resource again in the resource because of the assistant service cell getting,
When terminal fails to be received again by response message, terminal resends random access lead code and uncomfortable whole transmit power.
Wherein, for which, may is that terminal is sending random access guiding in application scenarios of the present embodiment
After code, the 3rd subframe opens reception window, and window size can configure, and is such as currently configured as 8 subframes.Open in window
3 subframes afterwards, using finishing, window continues to open the resource competing, until window terminates also not receive
Rar, and do not receive competitive resource information, or do not compete resource, when having competitive resource again yet
Terminal resends random access guiding, to send according to the last power sending random access lead code, not to increase and send out
Send power.
Fig. 3 is the according to embodiments of the present invention method flow diagram two executing Stochastic accessing based on unauthorized carrier wave, such as Fig. 3
Shown, the step of the method includes:
Step s302: base station sends to terminal and executes the first of random access procedure for instruction in assistant service cell
Notification message, wherein, carries the mark for indicating assistant service cell, assistant service cell in the first notification message
It is the cell based on unauthorized carrier wave；
Step s304: base station obtains the resource of assistant service cell, and resource is sent to terminal, wherein, resource is used
Send random access lead code in terminal；
Step s306: base station to terminal send accidental access response rar message, wherein, carry in rar message with
Machine access lead code.
It should be noted that the random access lead code that in step s306, rar message carries is used to and terminal transmission
Random access lead code is mated, that is, carry in rar message in embodiment step s208 of Fig. 2 with
When machine access lead code is consistent with the random access lead code that terminal sends, terminal Stochastic accessing mistake in assistant service cell
Journey normal termination；That is the Stochastic accessing that the random access lead code carrying in rar message may be sent with terminal
Lead code consistent it is also possible to inconsistent.
Additionally, the embodiment of Fig. 2 and Fig. 3 is to describe the present invention from base station side and end side respectively, therefore, above-mentioned
Two embodiments are corresponding, have described in detail in the embodiment of fig. 2, and here is no longer to Fig. 3's
Embodiment is repeated, and base station side related content is referred to the description of end side.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment
Method can realize by the mode of software plus necessary general hardware platform naturally it is also possible to pass through hardware, but a lot
In the case of the former is more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing
Have what technology contributed partly can embody in the form of software product, this computer software product is stored in one
In storage medium (as rom/ram, magnetic disc, CD), including some instructions with so that a station terminal equipment (can
To be mobile phone, computer, server, or the network equipment etc.) execution each embodiment of the present invention method.
Additionally provide a kind of device executing Stochastic accessing based on unauthorized carrier wave in the present embodiment, this device is used for realizing
Above-described embodiment and preferred implementation, had carried out repeating no more of explanation.As used below, term " mould
Block " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples is preferably
To be realized with software, but hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
Fig. 4 is the structured flowchart one of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave, should
Device is applied to end side, as shown in figure 4, this device includes: first processing module 42, send use for receiving base station
Execute the first notification message of random access procedure in instruction in assistant service cell, and get assistant service cell
Resource, wherein, carries the mark for indicating assistant service cell in the first notification message, assistant service cell is base
Cell in unauthorized carrier wave；First sending module 44, is of coupled connections with first processing module 42, for according to mark
Random access lead code is sent on the resource getting；First receiver module 46, with the first sending module 44 company of coupling
Connect, receive, for opening, the accidental access response rar message that window reception base station sends；Performing module 48, with first
Receiver module 46 is of coupled connections, and random access lead code and the terminal for carrying in rar message sends to base station
When random access lead code is consistent, the random access procedure normal termination of execution in assistant service cell.
Fig. 5 is the alternative construction block diagram one of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave,
As shown in figure 5, first processing module 42 includes: the first receiving unit 52, for receiving the second notification message of base station,
Wherein, carry the resource that base station competes in assistant service cell in second notification message；Or, the second receiving unit 54,
For receive base station transmission for the request message in assistant service cell competitive resource；Competitive unit 56, for foundation
Request message competes the resource of assistant service cell, and the resource notification base station that competition is arrived.
Fig. 6 is the alternative construction block diagram two of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave,
As shown in fig. 6, the first sending module 44 includes: the 3rd receiving unit 62 is little by assistant service for receiving base station
The first notification message that the main serving cell in area sends, wherein, carries the mark of assistant service cell in the first notification message
Know and random access lead code；First transmitting element 64, is of coupled connections with the 3rd receiving unit 62, for according to mark
Transmission random access lead code in first subframe of resource is competed on corresponding assistant service cell；
Fig. 7 is the alternative construction block diagram three of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave,
As shown in fig. 7, send in terminal reception base station executing the first of random access procedure in assistant service cell for instruction
Before notification message, the method for the present embodiment also includes: the second receiver module 72, with first processing module 42 company of coupling
Connect, for receiving the third notice message of base station transmission, wherein, carrying base station in third notice message is that assistant service is little
One or more random access lead codes that area reserves；This first sending module 44 includes: the 4th receiving unit 74, uses
In receiving the first notification message that base station is sent by main serving cell, wherein, carrying base station in the first notification message is
One of multiple random access lead codes that assistant service cell is reserved random access lead code；Second transmitting element 76,
It is of coupled connections with the 4th receiving unit 74, need to execute random access procedure for being determined according to random access lead code
Cell if it is determined that cell be auxiliary Serving cell, then in the first subframe of the resource that assistant service cell competes
Send random access lead code.
Fig. 8 is the alternative construction block diagram four of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave,
As shown in figure 8, the first sending module 44 includes: the 3rd transmitting element 82, for being incomplete subframe in the first subframe
When, send random access lead code after delaying a subframe；Or, the 4th transmitting element 84, in terminal challenge to money
First subframe in source and do not receive main serving cell transmission the first notification message when, or first in terminal challenge to resource
Individual subframe and also receive simultaneously main serving cell transmission the first notification message when, under receiving after the first notification message
One subframe sends random access lead code.
Alternatively, open reception window reception base station in response after random access lead code response message in terminal, this reality
The device applying example also includes；When the resource of the assistant service cell that terminal gets is used up, suspend module, for suspending
Receive the change of window, until competing the resource of assistant service cell again.
Alternatively, after terminal random access procedure normal termination in assistant service cell, the device of the present embodiment is also
Including；Because the resource of the assistant service cell getting is used up and do not got resource again, terminal fails to receive again
During to response message, processing module, it is used for resending random access lead code and uncomfortable whole transmit power.
The response message being related in the present embodiment is also carried to the Timing Advance of the random lead code of base station calculating
ta；Therefore, this performing module 38, is additionally operable to execute random access procedure in assistant service cell according to ta.
Fig. 9 is the structured flowchart two of the according to embodiments of the present invention device executing Stochastic accessing based on unauthorized carrier wave, should
Device is applied to base station side, as shown in figure 9, this device includes: the second sending module 92, it is used for for sending to terminal
Indicate the first notification message executing random access procedure in assistant service cell, wherein, carry in the first notification message
There is the mark for indicating assistant service cell, assistant service cell is the cell based on unauthorized carrier wave；Second processing mould
Block 94, is of coupled connections with the second sending module 92, for obtaining the resource of assistant service cell, and resource is sent to
Terminal, wherein, resource is used for terminal and sends random access lead code；3rd sending module 96, with Second processing module
94 are of coupled connections, and for sending the response message in response to random access lead code to terminal, wherein, take in response message
With random access lead code.
Alternative embodiment with reference to the present invention is illustrated to the embodiment of the present invention；
This optional embodiment provides a kind of method that unauthorized carrier wave carries out Stochastic accessing, and the step of the method includes:
Step s402: base station notifies terminal to authorize in auxiliary and accesses (licensed assisted access, referred to as laa)
Upper initiating random access procedure；
Wherein, laa is the cell of self scheduling, by authorizing transmission pdcch order on carrier wave such as pcell to touch
Send out initiating random access procedure on laa, divide by increase cell ID on pdcch order or by Special leader
Section requires initiating random access procedure on initiating random access procedure or laa on pcell to distinguish.
Step s404: after terminal receives pdcch order, send random access lead code；
Wherein, laa, after robbing and accounting for resource, is fixed on first subframe random access lead code robbing the resource accounting for,
If first subframe is incomplete subframe, a subframe can be postponed and send random access lead code, or not postpone.
Step s406: terminal receives the rar that base station sends；
Wherein, rar receives window (ra response window), in not competition to unauthorized carrier resource then
Wait, suspend the change of window, be further continued for after competition is to resource.Account for resource for because not robbing without receiving
Rar's, terminal resends and does not then adjust power during random access lead code.
By the method for this alternative embodiment so that laa can be rapidly completed Stochastic accessing and then carry out data transmit-receive,
Avoid the situation that laa cannot use.
With specific embodiment, this alternative embodiment is described in detail below in conjunction with the accompanying drawings；
In this alternative embodiment, there are two cells base station, cell 1 (authorize carrier wave, that is, main serving cell), little
Area 3 (unauthorized carrier wave, that is, assistant service cell), cell 1 and cell 3 can carry out carrier aggregation.For little
Area 1 is polymerized by way of dual link with cell 3, if cell has activation and deexcitation on unauthorized carrier wave, that
This cell needs first to activate and executes random access procedure again.
Embodiment one:
Figure 10 is the method flow diagram according to alternative embodiment one of the present invention, and as shown in Figure 10, terminal is set up with cell 1
Connect, base station is to terminal sending measuring task, and the measurement report that receiving terminal reports, the step of the method includes:
Step s1002: because portfolio increases, base station, according to measurement report, increases cell 3 to terminal, and cell 3 is
Self scheduling cell；
Step s1004: terminal receives configuration order, increases cell 3；
Step s1006a: base station notifies terminal, cell 3 needs to execute random access procedure, by sending in cell 1
Pdcch order notifies terminal, carries the mark of cell 3, can be cell ID or service in pdcch order
Other indicating means of cell ID or indicating cell 3, can also carry Special leader index as being now 60；
Step s1006b: base station competes the resource in cell 3, after competing resource, notifies terminal, competitive resource
Information, the frequency information of the resource such as competing, temporal information etc.；
It should be noted that this step s806a and step s806b can be carried out simultaneously.
Step s1008, terminal gets the resource of competition；
Step s1010: terminal receives the order in cell 1, decoding cell ID is cell 3 knows it is to require little
Initiating random access procedure in area 3, and 60 corresponding random access lead codes are indexed using Special leader, and receive
The information of the resource competing to base station, sends this random access lead code in first subframe of competition to resource.
Wherein, 1) if first receiving the pdcch order in cell 1, just first subframe in competition to resource is sent out
Give this random access lead code, if this first subframe is incomplete subframe, terminal can be delayed a subframe and send
Random access lead code is not it is also possible to delay.
2) receive base station transmission competition to resource information after, if the first of the resource competing subframe, terminal
Not yet receive the pdcch order in cell 1, or just receive in cell 1 in first subframe of the resource competing
Pdcch order, then before the next subframe of the pdcch order on receiving cell 1 sends this Stochastic accessing
Leading code, receives pdcch order in cell 1, and successfully decoded know need send random access guiding, then go little
The starting position of new subframe is found in area 3, searches out this subframe and then sends random access guiding.
Step s1012: terminal the 3rd subframe after sending random access lead code opens reception window, and window size can
Configuration, is such as currently configured as 8 subframes；
Step s1014: base station receives lead code, calculates ta value, sends rar by cell 1 and notifies terminal；
Step s1016: terminal receive base station send accidental access response, confirm response message in lead code with send out before
The lead code sent is the same, and random access procedure completes, and obtains the ta of accidental access response；
Step s1018: terminal can carry out upstream data transmission using ta in cell 3.
Embodiment two:
Figure 11 is the method flow diagram according to alternative embodiment two of the present invention, and as shown in figure 11, terminal is set up with cell 1
Connect, base station is to terminal sending measuring task, and the measurement report that receiving terminal reports, the step of the method includes:
Step s1102: because portfolio increases, base station, according to measurement report, increases cell 3 to terminal, and cell 3 is
Self scheduling cell
Step s1104: terminal receives configuration order, increases cell 3；
Step s1106a: in the Stochastic accessing Special leader resource of base station, index 60-63 keeps for laa cell, that is,
Special leader is sent on base station and indexes as 60-63, then terminal thinks and the cell on laa initiate Stochastic accessing,
Base station broadcasted by system message or specific messages notify terminal, in addition, base station notify terminal, cell 3 need execution with
Machine access procedure, notifies terminal by sending pdcch order in cell 1, carries special in pdcch order
Preamble index is as being now 60；
Step s1106b: terminal receives the request of base station, the resource in competition cell 3, after competing resource, notifies
Base station, the information of competitive resource, the frequency information of the resource such as competing, temporal information etc.；
It should be noted that step s1006a and step s1006b can be carried out simultaneously.
Step s1108: terminal gets the resource information of competition；
Step s1110: terminal receives the order in cell 1, before decoding Special leader index 60 corresponding Stochastic accessing
Leading code, knows it is to require initiating random access procedure in cell 3, and sending in first subframe of competition to resource should be with
Machine access lead code.
Wherein, 1) if first receiving the pdcch order in cell 1, just first subframe in competition to resource is sent out
Give this random access lead code, if this first subframe is incomplete subframe, terminal can be delayed a subframe and send
Random access lead code is not it is also possible to delay.
2) if the first of the resource competing subframe, terminal not yet receives the pdcch order in cell 1, or
Person just receives the pdcch order in cell 1 in first subframe of the resource competing, then on receiving cell 1
The next subframe of pdcch order send this random access lead code,
Step s1112: terminal the 3rd subframe after sending random access lead code opens reception window, and window size can
Configuration, is such as currently configured as 8 subframes.
Step s1114: base station receives lead code, calculates ta value, sends rar by cell 3 and notifies terminal
Step s1116: terminal receive base station send accidental access response, confirm response message in lead code with send out before
The lead code sent is the same, and random access procedure completes, and obtains the ta of accidental access response
Step s1118: terminal can carry out upstream data transmission using ta in cell 3.
For above-mentioned steps s1110, if now there being multiple laa cells, terminal voluntarily selects a cell execution
Random access procedure.
Embodiment three:
Step s1102 to step s1208 and embodiment two for step s1202 in this embodiment is to step s1108
It is similar, except for the difference that step below；
Step s1210, terminal the 3rd subframe after sending random access lead code opens reception window, and window size can
Configuration, is such as currently configured as 8 subframes, and that is, window size is 8 subframes.
Step s1212: 3 subframes after window is opened, using finishing, then terminal stops window to the resource competing
The increase of mouth, fixes in 3 subframe lengths
Step s1214: be received again by after 4 subframes of terminal base station transmission competition to resource information, or terminal from
Resource is arrived in row competition, and first subframe of the resource competing at this starts, and window continues to open, that is, after 4 subframes,
5th subframe, window size is changed into 4 subframes, if this first subframe is incomplete subframe, terminal can be prolonged
A subframe opens window it is also possible to not delay afterwards.
Example IV:
Step s1102 to step s1308 and embodiment two for step s1302 in this embodiment is to step s1108
It is similar, except for the difference that step below；
Step s1310, terminal the 3rd subframe after sending random access lead code opens reception window, and window size can
Configuration, is such as currently configured as 8 subframes.
Step s1312: 3 subframes after window is opened, using finishing, window continues to open the resource competing,
Until window terminates also not receive rar, and do not receive competitive resource information, or do not compete money yet
Source,
Step s1314: terminal resends random access guiding, according to the last power sending random access lead code
To send, not increase transmit power.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong
Cross in the following manner to realize, but not limited to this: above-mentioned module is respectively positioned in same processor；Or, above-mentioned module position respectively
In multiple processors.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can
To be arranged to store for executing the program code of following steps:
Step s1: terminal reception base station sends and executes the first of random access procedure for instruction in assistant service cell
Notification message, and get the resource of assistant service cell, wherein, assistant service cell is little based on unauthorized carrier wave
Area；
Step s2: terminal sends random access lead code according to mark in the resource getting；
Step s3: terminal is opened and received the accidental access response rar message that window reception base station sends；
Step s4: the random access lead code that the random access lead code carrying in rar message is sent with terminal is consistent
When, terminal random access procedure normal termination in assistant service cell.
Alternatively, the specific example in the present embodiment may be referred to showing described in above-described embodiment and optional embodiment
Example, the present embodiment will not be described here.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Realizing, they can concentrate on single computing device computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to by they
Storage to be executed by computing device in the storage device, and in some cases, can be to hold different from order herein
The shown or described step of row, or they are fabricated to respectively each integrated circuit modules, or will be many in them
Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware
Combine with software.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. a kind of method based on unauthorized carrier wave execution Stochastic accessing is it is characterised in that include:
Terminal receives base station and sends the first notice executing random access procedure for instruction in assistant service cell
Message, and get the resource of described assistant service cell, wherein, described assistant service cell is based on described non-
Authorize the cell of carrier wave；
Described terminal sends random access lead code to described base station in the resource getting；
Described terminal is opened and is received the accidental access response rar message that base station described in window reception sends；
The Stochastic accessing that the random access lead code carrying in described rar message and described terminal send to base station
When lead code is consistent, the random access procedure normal termination in described assistant service cell of described terminal.
2. method according to claim 1 is it is characterised in that described terminal gets the money of described assistant service cell
Source includes:
Described terminal receives the second notification message of described base station, wherein, carries described in described second notification message
The resource that base station competes in described assistant service cell；Or,
Described terminal receive that described base station sends for the request message in described assistant service cell competitive resource,
And the resource according to the described request message described assistant service cell of competition, and the base described in resource notification arriving will be competed
Stand.
3. method according to claim 2 it is characterised in that described terminal in the resource getting to described base station
Send random access lead code to include:
Described terminal receives described first notification message that described base station sends, wherein, in described first notification message
Carry the mark of described assistant service cell and described random access lead code；
Described terminal competes in corresponding assistant service cell according to described mark and sends out in the first subframe of resource
Send described random access lead code.
4. method according to claim 1 sends for instruction in auxiliary clothes it is characterised in that receiving base station in terminal
Before executing the first notification message of random access procedure in business cell, methods described includes:
Described terminal receives the third notice message that described base station sends, and wherein, carries in described third notice message
There are one or more random access lead codes that described base station is that auxiliary Serving cell is reserved.
5. method according to claim 4 is it is characterised in that described terminal sends to base station in the resource getting
Random access lead code includes:
Described terminal receives described first notification message that described base station sends, wherein, in described first notification message
Carry described random access lead code；
Described terminal determines, according to described random access lead code, the cell needing to execute random access procedure, if really
Fixed cell is described assistant service cell, then in the first subframe of the resource that described assistant service cell competes
Send described random access lead code.
6. the method according to claim 3 or 5 it is characterised in that described terminal in the resource getting to base station
Send random access lead code to include:
When described first subframe is incomplete subframe, before described terminal delays a subframe described Stochastic accessing of transmission
Leading code；Or,
In competition to the first subframe of resource and do not receive the transmission of described base station the first notification message when, or, competing
When striving first subframe of resource and also receiving the first notification message that described base station sends simultaneously, described terminal exists
Receive the next subframe after described first notification message and send described random access lead code.
7. method according to claim 1 is it is characterised in that open base station described in reception window reception in described terminal
After the accidental access response rar message sending, methods described also includes；
When the resource of described assistant service cell is used up, described terminal suspends the described change receiving window, until
Compete the resource of described assistant service cell again.
8. method according to claim 1 is it is characterised in that random in described assistant service cell in described terminal
After access procedure normal termination, methods described also includes；
Use up and do not get again described resource in the resource because of the described assistant service cell getting, described
When terminal fails to be received again by response message, described terminal resends uncomfortable during described random access lead code haircuting
Send power.
9. a kind of method based on unauthorized carrier wave execution Stochastic accessing is it is characterised in that include:
Base station sends, to terminal, the first notice executing random access procedure in assistant service cell for instruction and disappears
Breath, wherein, carries the mark for indicating described assistant service cell, described auxiliary clothes in the first notification message
Business cell is the cell based on described unauthorized carrier wave；
Described base station obtains the resource of described assistant service cell, and described resource is sent to described terminal, wherein,
Described resource is used for described terminal and sends random access lead code；
Described base station sends accidental access response rar message to described terminal, wherein, takes in described rar message
With random access lead code.
10. a kind of device executing Stochastic accessing based on unauthorized carrier wave, is applied to end side it is characterised in that including:
First processing module, sends for indicating execution Stochastic accessing mistake in assistant service cell for receiving base station
First notification message of journey, and get the resource of described assistant service cell, wherein, described assistant service cell
It is the cell based on described unauthorized carrier wave；
First sending module, for sending random access lead code to described base station in the resource getting；
First receiver module, receives, for opening, the accidental access response rar message that base station described in window reception sends；
Performing module, random access lead code and described terminal for carrying in described rar message are sent out to base station
When the random access lead code that send is consistent, the random access procedure normal termination of execution in described assistant service cell.
A kind of 11. devices executing Stochastic accessing based on unauthorized carrier wave, for base station side it is characterised in that including:
Second sending module, executes random access procedure for sending to terminal for instruction in assistant service cell
The first notification message, wherein, in the first notification message, carry the mark for indicating described assistant service cell,
Described assistant service cell is the cell based on described unauthorized carrier wave；
Second processing module, for obtaining the resource of described assistant service cell, and described resource is sent to described
Terminal, wherein, described resource is used for described terminal and sends random access lead code；
3rd sending module, for sending accidental access response rar message, wherein, described rar to described terminal
Random access lead code is carried in message.
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| CN201510414912.8A CN106341899A (en) | 2015-07-14 | 2015-07-14 | Method and device for performing random access based on unauthorized carrier |
| PCT/CN2016/074479 WO2017008508A1 (en) | 2015-07-14 | 2016-02-24 | Method and device for performing random access based on unauthorized carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414912.8A CN106341899A (en) | 2015-07-14 | 2015-07-14 | Method and device for performing random access based on unauthorized carrier |
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| WO (1) | WO2017008508A1 (en) |
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Application publication date: 20170118 |
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