CN106162836A - A kind of wireless communications method - Google Patents
A kind of wireless communications method Download PDFInfo
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- CN106162836A CN106162836A CN201510134737.7A CN201510134737A CN106162836A CN 106162836 A CN106162836 A CN 106162836A CN 201510134737 A CN201510134737 A CN 201510134737A CN 106162836 A CN106162836 A CN 106162836A
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- base station
- community
- subscriber equipment
- message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A kind of method activated in the base station of LTE communication system from community, wherein, described is unauthorized carrier wave from community, and described method includes: described base station, in the described enterprising line space idle channel detection from community, determines described the most idle from community；When described from cell null idle, described base station sends targeting signal described from community, and wherein, described targeting signal includes indicating described in described base station activation from the information of community.
Description
Technical field
The present invention relates to communication technical field, particularly relate to wireless communication technology field.
Background technology
At wireless communication field, it is however generally that, traditional deployment way is that system is operated in and awards
Power frequency range (licensed band), the most whole frequency spectrum resource all keeps for this system to use.
Typically, LTE communication system uses and authorizes band operation.
But, along with the further growth of wireless traffic, capacity and the frequency to wireless communication system
Duan Yaoqiu improves the most therewith.In this case, the mandate resource of frequency range of LTE system seems
Relative deficiency is got up.Therefore, one of nearest in LTE field study hotspot is how profit
Data service occurred frequently is shunted by the resource of unauthorized frequency range.This kind of scheme is referred to as portion
The LTE (LTE in Unlicensed spectrum is called for short LTE-U) belonging to unauthorized carrier wave is
System
Such as under one typical scene, LTE system uses the frequency range of WiFi system.I.e. LTE
The situation that the community of system and the community of WiFi system at least partly coexist on geographical position.
In this case, if LTE system can use WiFi in the moment of some high capacity
Frequency range carry out service distributing, it is clear that can be greatly improved the performance of system, thus effectively
Reply high capacity application scenarios.
It is clear that in the case of LTE coexists with WiFi system, utilize LTE system
The carrier wave that authorizes to assist the unauthorized carrier wave of WiFi system to carry out access be that one is the most direct
Selection, accordingly, with respect to authorize auxiliary access (Licensed-Assisted Access be called for short
LAA) a big focus of recent moving communicating field has been become.
The existing procedure utilizing LAA technology can farthest continue to use LTE system realizes
Authorize carrier aggregation (Carrier Aggregation the is called for short CA) tune of carrier wave and unauthorized carrier wave
Degree.But for the system compatible with unauthorized carrier wave, it is desired nonetheless to introduce some new mechanism,
One of them matter of utmost importance is how to realize sending out of unauthorized carrier wave in LTE-LAA system
(listen before talk is called for short LBT) is intercepted before sending.
Such as typical, certain unauthorized carrier wave as LTE system from community (Secondary
Cell is called for short Scell) with as main plot (Primary Cell is called for short Pcell) certain mandate
Carrier aggregation.Then before this Pcell attempts to activate this Scell, base station must determine this Scell
Do not taken by other system.Therefore base station needs to detect (Clear at Scell enterprising line space idle channel
Channel Assessment is called for short CCA) to determine that channel is idle, then perform activation
The operation of this Scell.But, when using based on load (Load Base Equipment
Be called for short LBT) pattern time, Pcell only when have load need send time, just can go to attempt to swash
Live Scell, say, that when base station carries out CCA is uncertain, and now Scell
Be whether the free time be also that base station cannot determine in advance.In this case, how base station leads to
Knowing its subscriber equipment (User Equipment is called for short UE), certain Scell is activated/goes
Activate and just become a problem needing to solve.
In existing discussion, there are two kinds of suggestions about this problem.One is by allowing UE exist
Scell upper blind decoding PDCHH or cell reference signals (Cell Reference Signal letter
Claim CRS), if it is possible to successfully decoding PDCCH or CRS, then explanation base station is
Have activated this Scell, this method without introducing new signaling, but can but require UE
On Scell, carry out extra blind decoding operation, it means that electric quantity consumption greatly always,
And the use in view of unauthorized carrier wave is the most sparse, such electric quantity consumption causes UE
The significant wastage of stand-by time；Another kind of method is by sending out on mandate carrier wave, i.e. Pcell
Sending indication signaling to express the activation of Scell, such benefit is to save electricity, but
Require to introduce new Signalling exchange, it is often more important that, owing to UE does not knows that base station can be when
Sending this indication signaling, therefore each sub-frame data on Scell must all be cached down by UE
Come, so could be after receiving Pcell indication signaling, the correct number on process Scell
According to transmission, it is clear that so caching to UE causes waste greatly equally, also cannot make
For preferable solution.
So the target of the present invention is exactly a kind of method finding new activation Scell；This side
Method is required to so that in the case of LAA, base station can effectively notify UE, certain Scell
It is activated；Avoid the waste caused UE electricity and caching the most as far as possible.
Summary of the invention
For solving the problems referred to above of the prior art, the present invention proposes a kind of new activation Scell
Method.By allowing base station add the information that instruction activates when sending the targeting signal of Scell,
So that it is guaranteed that UE promptly and accurately can know that Scell is activated.
Specifically, according to the first aspect of the invention, it is proposed that a kind of in LTE communication system
Base station in activate the method from community, wherein, described is unauthorized carrier wave from community, institute
The method of stating includes: described base station, in the described enterprising line space idle channel detection from community, determines institute
Shu Cong community is the most idle；When described from cell null idle, described base station described from community
Upper transmission targeting signal, wherein, described targeting signal includes indicating described base station activation institute
The information of Shu Cong community.
Preferably, wherein, also including after described second step, described base station is in main plot
Upper transmission the first message, wherein, described first message is for notifying that the user of the first quantity sets
Standby, described base station will lead at described subscriber equipment from community with described first quantity
Letter, wherein, the subscriber equipment of described first quantity is little in described institute by described base station scheduling
The subscriber equipment communicated in district.
It is highly preferred that the most also include, described base station is on described main plot
Sending the second message, wherein, described second message is used for the described user notifying the first quantity
Equipment, described base station by no longer described from community with the subscriber equipment of described first quantity
Communicate.
Preferably, wherein, include from the information of community described in the described base station activation of described instruction
The orthogonal sequence relevant with the cell designation of described base station.
It is highly preferred that wherein, the orthogonal sequence that the cell designation of described and described base station is relevant
Master sync signal sequence and/or auxiliary synchronous signals sequence including described base station.
According to the second aspect of the invention, it is proposed that a kind of user in LTE communication system sets
Standby middle activation is from the method for community, and wherein, described is unauthorized carrier wave from community, described side
Method includes: described subscriber equipment receive base station described from community send targeting signal,
Wherein, described targeting signal includes indicating described in described base station activation from the information of community.
Preferably, the most also including, described subscriber equipment receives described base station
The first message sent on main plot, wherein, described first message is used for notifying described use
Family equipment, described base station will communicate with described subscriber equipment from community described.
It is highly preferred that the most also include, described subscriber equipment receives described base
Standing in the second message sent on main plot, wherein, described second message is used for notifying described
Subscriber equipment, described base station will no longer lead to described subscriber equipment from community described
Letter.
According to the third aspect of the invention we, it is proposed that a kind of in the base station of LTE communication system
Activating the equipment from community, wherein, described is unauthorized carrier wave from community, described equipment bag
Include: detection module, for described base station in the described enterprising line space idle channel detection from community,
Determine described the most idle from community；Leading sending module, for when described idle from community
Time, described base station sends targeting signal, wherein, described targeting signal described from community
Include indicating described in described base station activation from the information of community.
Preferably, also include, the first sending module, send out on main plot for described base station
Sending the first message, wherein, described first message is used for notifying the subscriber equipment of the first quantity,
Described base station will communicate at described subscriber equipment from community with described first quantity,
Wherein, the subscriber equipment of described first quantity by described base station scheduling on described institute community
The subscriber equipment communicated.
It is highly preferred that also include, the second sending module is little described master for described base station
Sending the second message in district, wherein, described second message is for described first quantity that notifies
Subscriber equipment, described base station by no longer described from community with the user of described first quantity
Equipment communicates.
According to the fourth aspect of the invention, it is proposed that a kind of user in LTE communication system sets
Standby middle activation is from the equipment of community, and wherein, described is unauthorized carrier wave from community, described side
Method includes: leading receiver module, receives base station described from community for described subscriber equipment
The targeting signal of upper transmission, wherein, described targeting signal includes indicating described base station activation
The described information from community.
Preferably, also include, the first receiver module, receive for described subscriber equipment described
The first message that base station sends on main plot, wherein, described first message is used for notifying institute
Stating subscriber equipment, described base station will communicate with described subscriber equipment from community described.
It is highly preferred that also include, the second receiver module, receive institute for described subscriber equipment
Stating the second message that base station sends on main plot, wherein, described second message is used for notifying
Described subscriber equipment, described base station will no longer be entered with described subscriber equipment from community described
Row communication.
In the present invention, by utilizing existing targeting signal to indicate the information of activation, thus
Guarantee to may insure that UE saves electricity without carrying out extra blind decoding operation；Pass through
Send targeting signal before transmitting data, it is ensured that UE is only determining that Scell is swashed
The subframe that just starts after work to cache on Scell thus save spatial cache；And preferably
Scheme in can only notify part UE that is scheduled for, thus decrease systematic entirety
The waste of energy, it is achieved that the target of the present invention.
Accompanying drawing explanation
The following detailed description to non-limiting example is read by referring to accompanying drawing, this
Further feature, purpose and the advantage of invention will will become more apparent.
Fig. 1 shows and activates in the base station of LTE communication system according to a kind of of the present invention
The flow chart of the method for Scell；
Fig. 2 shows and swashs in the subscriber equipment of LTE communication system according to a kind of of the present invention
The flow chart of the method for Scell alive；
Fig. 3 shows and activates in the base station of LTE communication system according to a kind of of the present invention
The block diagram of the equipment of Scell；
Fig. 4 shows and swashs in the subscriber equipment of LTE communication system according to a kind of of the present invention
The block diagram of the equipment of Scell alive.
Wherein, same or analogous reference represents same or analogous steps characteristic or dress
Put/module.
Detailed description of the invention
In the specific descriptions of following preferred embodiment, will be with reference to constituting a present invention part
Appended accompanying drawing.Appended accompanying drawing has been illustrated by way of example and has been capable of the present invention
Specific embodiment.The embodiment of example is not intended as the limit all realities according to the present invention
Execute example.It is appreciated that without departing from the scope of the present invention, it is possible to use other
Embodiment, it is also possible to carry out the structural or amendment of logicality.Therefore, following concrete
Describe and nonrestrictive, and the scope of the present invention is defined by the claims appended hereto.
First, application according to the present invention scene, have what a LTE communication system covered
Region, including at least one base station and UE and contact mandate carrier wave between the two, i.e.
Pcell.There is also other unauthorized carrier wave in this this region external, wherein, this is unauthorized
Carrier wave can also be used by other LTE or WiFi communication system.
Owing to this base station operation is under LBE pattern, so only feeling the need to when this base station
Using the moment that this unauthorized carrier wave is transmitted as Scell, this base station just non-can be awarded at this
CCA or ECCA (Extended CCA) operation is carried out, to confirm at this on power carrier wave
In one moment, this unauthorized carrier wave is the most idle available.However, it is contemplated that CCA/ECCA behaviour
Make the time extremely short (shortest time about 20 microsecond) taken, much smaller than a LTE subframe
Time.Therefore, the CCA/ECCA operation of base station can be in the middle of a subframe of Scell
Occur, even if it means that base station confirms that this Scell is idle at present sub-frame,
Intactly data transmission also can only send in next subframe.And present sub-frame does not also terminate,
So base station must make to take by some way the remainder of present sub-frame, otherwise currently
In the remaining time of subframe, if there being other system also to perform CCA/ECCA operation,
Also can judge that this Scell is idle available, conflict certainly will be caused in next subframe.For understanding
Certainly base station takies the problem of unauthorized carrier wave at present sub-frame, has been proposed in the industry one side
Case: base station, after confirming that Scell can use, sends leading letter within the remaining time of present sub-frame
Number, so that other equipment carry out to perceive this carrier wave during CCA/ECCA operation subsequently
Taken by certain system.And it is further proposed that, this targeting signal can be additionally used in receiving terminal and adjusts
Whole automatic growth control (automatic gain control is called for short AGC), for this purpose,
UE can on Scell this targeting signal of blind decoding.
The present invention based on such scheme, it is further proposed that, can add in this targeting signal
May indicate that base station has activated the information of this Scell, so when this targeting signal of UE blind decoding
Time, it is possible to learn that base station will start to pass in Scell enterprising row data in next subframe simultaneously
Defeated.So that the UE data that can be aware of when exactly to start to cache on Scell and not
Need to cache by each sub-frame data on Scell.This blind decoding operation simultaneously is
UE is to be performed, thus does not introduce new operation and cause the loss of electricity.From
And achieve the purpose of the present invention.
On this basis, according to one embodiment of present invention, it is proposed that a kind of logical at LTE
The method activating Scell in the base station of communication system.Concrete:
First this base station carries out CCA/ECCA operation on this Scell, whether determines Scell
Idle.
Second step, if result is this Scell free time, then base station sends leading by Scell
Signal, this targeting signal includes that instruction activates the information of this Scell.
As preferably, it is possible to use relevant with the cell ID of this base station (Cell ID)
Orthogonal sequence indicates.Typically, it is possible to use the master sync signal of this base station
(Primary Synchronization Signal is called for short PSS) sequence and/or auxiliary synchronous signals
(Secondary Synchronization Signal is called for short SSS) sequence indicates.
Additionally, after the second step described above, base station can also send first on Pcell and disappear
Breath, for notifying those UE being scheduled on this Scell, base station will on Scell with it
Communicate.Advantage of this is that and can be scheduled on Scell in view of only part UE,
Therefore need not allow all of UE all go to cache the data on Scell, can be directly at Pcell
On express which UE by signaling and need to cache the data of Scell, thus save other UE
Spatial cache.
Further, when base station will this Scell of deexcitation time, base station can also be at Pcell
Upper transmission the second message, for notifying those UE being scheduled on this Scell, base station will
No longer communicate on Scell.So these UE are known that from the beginning of next subframe,
It is no longer necessary to cache the data on Scell, thus discharges spatial cache.
Accompanying drawing 1 shows the flow chart activating Scell according to above-described embodiment, including:
The most described base station in the described enterprising line space idle channel detection from community, determine described from
Community is the most idle；
S12. when described from cell null idle, described base station described send from community leading
Signal, wherein, described targeting signal includes indicating described in described base station activation from community
Information.
Corresponding, according to another embodiment of the invention, it is proposed that a kind of logical at LTE
The method activating Scell in the UE of communication system.Concrete:
This UE is receiving the targeting signal that this base station sends on this Scell, this targeting signal
Include the information indicating this Scell of this base station activation.
Further, this UE receives the first message that this base station sends on Pcell, and this is the years old
One message is used for notifying this UE, and this base station will communicate with this UE at this Scell.
Preferably, following this UE second disappearing of can receiving on Pcell that this base station sends
Breath, this second message is used for notifying this UE, and this base station will no longer be entered with this UE at this Scell
Row communication.
Accompanying drawing 2 shows the flow chart activating Scell according to above-described embodiment, including:
The most described subscriber equipment receive base station described from community send targeting signal,
Wherein, described targeting signal includes indicating described in described base station activation from the information of community.
Hereinafter combine accompanying drawing again and introduce set corresponding with said method provided by the present invention
Standby, in view of unit/device characteristic therein has corresponding relation with the steps characteristic in said method,
To conform to the principle of simplicity.
Accompanying drawing 3 shows and activates in the base station of LTE communication system according to a kind of of the present invention
The equipment 30 of Scell, described equipment includes:
Detection module 3001, for described base station in the described enterprising line space idle channel inspection from community
Survey, determine described the most idle from community；
Leading sending module 3002, is used for when described from cell null idle, and described base station is in institute
Sending targeting signal on Shu Cong community, wherein, described targeting signal includes indicating described base
Activation of standing is described from the information of community.
Accompanying drawing 4 shows and activates in the UE of LTE communication system according to a kind of of the present invention
The equipment 40 of Scell, described equipment includes:
Leading receiver module 4001, receives base station described from community for described subscriber equipment
The targeting signal of upper transmission, wherein, described targeting signal includes indicating described base station activation
The described information from community.
Above embodiments of the invention are described, but the invention is not limited in spy
Fixed system, equipment and concrete agreement, those skilled in that art can want in appended right
Various deformation or amendment is made in the range of asking.
The those skilled in the art of those the art can be by research description, disclosed
Content and accompanying drawing and appending claims, understand and implement the embodiment disclosed
Other change.In the claims, word " includes " element and the step being not excluded for other,
And wording " one " is not excluded for plural number.In the present invention, " first ", " second "
Only represent title, do not represent orbution.In the actual application of invention, a part can
The function of multiple technical characteristics cited in claim can be performed.Appointing in claim
What reference should not be construed as the restriction to scope.
Claims (14)
1. in the base station of LTE communication system, activate the method from community, wherein, institute
Shu Cong community is unauthorized carrier wave, and described method includes:
The most described base station, in the described enterprising line space idle channel detection from community, determines described from little
District is the most idle；
B. when described from cell null idle, described base station sends leading letter described from community
Number, wherein, described targeting signal includes indicating described in described base station activation from the letter of community
Breath.
Method the most according to claim 1, wherein, also wraps after described step b
Include,
The most described base station sends the first message on main plot, and wherein, described first message is used
In notifying the subscriber equipment of the first quantity, described base station will described from community with described
The subscriber equipment of one quantity communicates, wherein, the subscriber equipment of described first quantity by
The subscriber equipment that described base station scheduling communicates on described institute community.
Method the most according to claim 2, wherein, in described stepcThe most also wrap
Include,
The most described base station sends the second message on described main plot, and wherein, described second disappears
Breath for the described subscriber equipment notifying the first quantity, described base station will no longer described from little
Described in Qu Shangyu, the subscriber equipment of the first quantity communicates.
Method the most according to claim 1, wherein, the described base station activation of described instruction
The described information from community includes the orthogonal sequence relevant with the cell designation of described base station.
Method the most according to claim 4, wherein, the described community with described base station
Indicate relevant orthogonal sequence and include master sync signal sequence and/or the auxiliary synchronization letter of described base station
Number sequence.
6. in the subscriber equipment of LTE communication system, activate the method from community, wherein,
Described is unauthorized carrier wave from community, and described method includes:
The most described subscriber equipment receive base station described from community send targeting signal, its
In, described targeting signal includes indicating described in described base station activation from the information of community.
Method the most according to claim 6, wherein, also wraps after described step A
Include,
The most described subscriber equipment receives the first message that described base station sends on main plot, its
In, described first message is used for notifying described subscriber equipment, and described base station will be described from little
Described in Qu Shangyu, subscriber equipment communicates.
Method the most according to claim 7, wherein, also wraps after described step B
Include,
The most described subscriber equipment receives the second message that described base station sends on main plot, its
In, described second message is used for notifying described subscriber equipment, and described base station will be no longer described
Communicate with described subscriber equipment from community.
9. in the base station of LTE communication system, activate the equipment from community, wherein, institute
Shu Cong community is unauthorized carrier wave, and described equipment includes:
Detection module, for described base station in the described enterprising line space idle channel detection from community,
Determine described the most idle from community；
Leading sending module, for when described from cell null idle, described base station described from
Sending targeting signal on community, wherein, described targeting signal includes indicating described base station to swash
Live described from the information of community.
Equipment the most according to claim 9, also includes,
First sending module, sends the first message on main plot for described base station, wherein,
Described first message for notifying the subscriber equipment of the first quantity, described base station will described from
On community, the subscriber equipment with described first quantity communicates, wherein, and described first quantity
The user that communicated on described institute community by described base station scheduling of subscriber equipment set
Standby.
11. equipment according to claim 10, also include,
Second sending module, sends the second message on described main plot for described base station,
Wherein, described second message is used for the described subscriber equipment notifying the first quantity, described base station
To no longer communicate at described subscriber equipment from community with described first quantity.
12. 1 kinds of equipment activated in the subscriber equipment of LTE communication system from community, its
In, described is unauthorized carrier wave from community, and described method includes:
Leading receiver module, receives base station for described subscriber equipment and sends out from community described
The targeting signal sent, wherein, described targeting signal includes indicating described in described base station activation
From the information of community.
13. equipment according to claim 12, also include,
First receiver module, receives described base station for described subscriber equipment and sends out on main plot
The first message sent, wherein, described first message is used for notifying described subscriber equipment, described
Base station will communicate with described subscriber equipment from community described.
14. equipment according to claim 13, also include,
Second receiver module, receives described base station for described subscriber equipment and sends out on main plot
The second message sent, wherein, described second message is used for notifying described subscriber equipment, described
Base station will no longer communicate with described subscriber equipment from community described.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134737.7A CN106162836B (en) | 2015-03-26 | 2015-03-26 | Wireless communication method |
| TW105105653A TW201642692A (en) | 2015-03-26 | 2016-02-25 | A wireless communication method for activating a secondary carrier |
| PCT/IB2016/000340 WO2016151389A1 (en) | 2015-03-26 | 2016-03-04 | A wireless communication method for activating a secondary carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134737.7A CN106162836B (en) | 2015-03-26 | 2015-03-26 | Wireless communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106162836A true CN106162836A (en) | 2016-11-23 |
| CN106162836B CN106162836B (en) | 2020-03-20 |
Family
ID=55629063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510134737.7A Active CN106162836B (en) | 2015-03-26 | 2015-03-26 | Wireless communication method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106162836B (en) |
| TW (1) | TW201642692A (en) |
| WO (1) | WO2016151389A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220054106A (en) * | 2020-10-23 | 2022-05-02 | 삼성전자주식회사 | Apparatus and method for resource allocation in wireless communication system |
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| CN102088793A (en) * | 2009-12-03 | 2011-06-08 | 华为技术有限公司 | Network access method and system |
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2015
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2016
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- 2016-03-04 WO PCT/IB2016/000340 patent/WO2016151389A1/en active Application Filing
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| CN102088793A (en) * | 2009-12-03 | 2011-06-08 | 华为技术有限公司 | Network access method and system |
| CN102232285A (en) * | 2009-12-30 | 2011-11-02 | 联发科技股份有限公司 | Measurement and carrier group based optimization in wireless OFDM multi-carrier communication systems |
| CN103430467A (en) * | 2011-03-11 | 2013-12-04 | Lg电子株式会社 | Method and device for terminal to transmit/receive signal in wireless communication system having carrier aggregation technique applied thereto |
| CN103765824A (en) * | 2011-07-14 | 2014-04-30 | 美国博通公司 | Methods and apparatuses for provision of a flexible time sharing scheme on an unlicensed band of a system |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016151389A1 (en) | 2016-09-29 |
| CN106162836B (en) | 2020-03-20 |
| TW201642692A (en) | 2016-12-01 |
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