CN108243135A - Carrier switch method and system - Google Patents
Carrier switch method and system Download PDFInfo
- Publication number
- CN108243135A CN108243135A CN201611222466.1A CN201611222466A CN108243135A CN 108243135 A CN108243135 A CN 108243135A CN 201611222466 A CN201611222466 A CN 201611222466A CN 108243135 A CN108243135 A CN 108243135A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000000969 carrier Substances 0.000 claims abstract description 10
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000002776 aggregation Effects 0.000 description 6
- 238000004220 aggregation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 101100411667 Arabidopsis thaliana RAN4 gene Proteins 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This application discloses a kind of carrier switch method and system, including：Network side is in advance grouped the up-link carrier not being configured of user equipment (UE), and the obtained uplink carrier group not being configured is notified to the UE；When the UE needs to carry out up-link carrier switching, from the uplink carrier group not being configured, selecting the UE currently needs the uplink carrier group not being configured detected and notifies to the UE for base station；The UE according to the notice of base station, it is selected go out the uplink carrier group not being configured in send detection reference signal SRS on each carrier wave；The base station obtains the uplink signal-channel quality of corresponding carriers using the SRS, in the range of the corresponding up-link carrier not being configured of descending carrier of the UE and the configured up-link carrier of the UE, up-link carrier switching is carried out for the UE according to the uplink signal-channel quality.Using the present invention, the advantage of Fast carrier switching can be given full play to.
Description
Technical field
The present invention relates to mobile communication technology, more particularly to the carrier switch method and system in a kind of carrier aggregation.
Background technology
In the lte networks, it is expected that there is large number of available carrier wave in each base station (eNB) for data transmission, carrier wave can
To be configured to PCell or SCell.Due to the secondary cell (SCell) of mandate and the presence of unauthorized LAA SCell, LTE standard
3GPP Rel-13 versions support maximum 32 member carriers.Effective operation for a large amount of carrier waves, advanced carrier aggregation technology
It is meaningful.Such as the quick load balance of intercarrier and migration, it quick interference coordination and avoids.This load balance and
Migration is conducive to increase handling capacity and reduce to interfere.For unauthorized LAA carrier waves, the load of less occupancy is selected when interference is promoted
Wave, it is this be switched fast for above-mentioned scene be significantly, and do not need to user equipment (UE) increase Capability Requirement.
In current LTE system, due to the asymmetry of uplink and downlink business, usual downlink is heavy duty, and is limited to
The hardware capabilities of UE, the up-link carrier limited amount that can be supported, therefore, the descending carrier quantity for UE configurations is much larger than configuration
Up-link carrier quantity.Uplink at most 2 carrier waves of configuration in current RAN4 standards, in this case if using carrier aggregation
Technology, uplink are only focusing only on small number of carrier wave (such as two carrier waves) polymerization, the carrier number that when carrier switch is considered
Amount is very little, possibly can not utilize the up-link carrier that channel quality is good, can not realize that Fast carrier switches.
It can be seen that in existing LTE system, due to the up-link carrier negligible amounts being configured for UE, define that carrier wave gathers
The application of Fast carrier switching in conjunction can not ensure that the selection up-link carrier that channel quality is good switches over, and then can not send out
Wave the advantage of Fast carrier switching.
Invention content
In view of this, it is a primary object of the present invention to provide a kind of carrier switch method and system, carrier wave can be realized
Fast carrier switching in polymerization gives full play to the advantage of Fast carrier switching.
In order to achieve the above object, technical solution proposed by the present invention is：
A kind of carrier switch method, including：
Network side is in advance grouped the up-link carrier not being configured of user equipment (UE), and is not configured obtained
Uplink carrier group is notified to the UE；
When the UE needs to carry out up-link carrier switching, base station is selected from the uplink carrier group not being configured
It needs to trigger the uplink carrier group of detection reference signal SRS detections and notify to the UE；
The UE according to the notice of base station, it is selected go out uplink carrier group in send SRS on each carrier wave；
The base station obtains the uplink signal-channel quality of corresponding carriers using the SRS, is corresponded in the descending carrier of the UE
The up-link carrier not being configured and the UE configured up-link carrier in the range of, be described according to the uplink signal-channel quality
UE carries out up-link carrier switching.
A kind of carrier switch system, including：
Base station eNB, for being grouped in advance to the up-link carrier not being configured of user equipment (UE), and by it is obtained not
The uplink carrier group of configuration is notified to the UE；When the UE need carry out up-link carrier switching when, from it is described be not configured it is upper
In row carrier wave set, selecting the UE currently needs the uplink carrier group not being configured detected and notifies to the UE；Using institute
The detection reference signal SRS for stating UE transmissions obtains the uplink signal-channel quality of corresponding carriers, corresponding in the descending carrier of the UE
It is the UE according to the uplink signal-channel quality in the range of the up-link carrier and the configured up-link carrier of the UE not being configured
Carry out up-link carrier switching.
User equipment (UE), for the notice according to base station, it is selected go out the uplink carrier group not being configured in it is each
SRS is sent on carrier wave.
In conclusion carrier switch method and system proposed by the present invention, by triggering UE to the up-link carrier that is not configured
Carry out SRS detections so that base station can know the channel quality of more up-link carrier, and then can expand carrier switch when is examined
The reference carrier wave of worry, that is, not only can in the range of the configured up-link carrier of UE, can also UE descending carrier it is corresponding
In the range of the up-link carrier not being configured, the target carrier of switching is selected, so as to the up-link carrier for selecting channel quality optimal
It is transmitted, therefore, can really realize the Fast carrier switching in carrier aggregation, give full play to the excellent of Fast carrier switching
Gesture.
Description of the drawings
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention；
Fig. 2 is that the non-collocating uplink carrier wave in the embodiment of the present invention is grouped schematic diagram；
Fig. 3 is the system structure diagram of the embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, it is right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in further detail.
The present invention core concept be：When needing to carry out carrier switch, notice UE is to the up-link carrier that is not configured for base station
SRS detections are carried out, according to SRS result of detection, in having matched for the corresponding up-link carrier not being configured of the descending carrier of UE and UE
It puts in the range of up-link carrier, carries out carrier switch processing.In this way, channel matter is carried out to the up-link carrier not being configured by triggering UE
Measurement, the channel quality of up-link carrier that sharp can not be configured, assistant base station selects optimal carrier wave to be transmitted, so as to make
The up-link carrier that obtaining UE can utilize channel quality best be transmitted, and therefore, can be given full play to quick in carrier aggregation
Carrier switch advantage.
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention, as shown in Figure 1, the carrier switch side that the embodiment is realized
Method mainly includes the following steps：
Step 101, network side are in advance grouped the up-link carrier not being configured of user equipment (UE), and will be obtained
The uplink carrier group not being configured is notified to the UE.
In this step, network side needs are grouped the up-link carrier for not being allocated to UE, to facilitate notice UE to part
The up-link carrier not being configured carries out SRS detections.
Specifically, this step can be realized in a base station.During specific grouping, carrier wave set number is more, and notice SRS is produced when detecting
Raw signaling overheads can be more, specifically can be by factors such as signaling overheads demand of the those skilled in the art in practical application
It is configured.For example, being segmented into as shown in Figure 24 groups, control information that 2bit is needed to identify this 4 groups in this way, each group can
With a status indicator.
Step 102, when the UE needs to carry out up-link carrier switching, base station is from the uplink carrier group not being configured
In, selecting needs to trigger the uplink carrier group that detection reference signal (SRS) detects and notify to the UE.
In this step, when needing to carry out carrier switch, base station needs the uplink not being configured obtained from step 101 to carry
The carrier wave for needing to carry out SRS detections is selected in wave group, will pass through the channel measurement that SRS detections obtain these carrier waves,
So as to assistant base station carrier switch is carried out for UE.
In practical applications, those skilled in the art can according to actual needs, and selecting needs to trigger SRS detections not
The uplink carrier group of configuration includes the corresponding up-link carrier not being configured of UE descending carriers in the uplink carrier group.
Preferably, base station can by Downlink Control Information (DCI) by it is selected go out the uplink carrier group not being configured lead to
Know to UE, SRS is sent on the carrier waves of UE wherein to trigger.Specifically, the Downlink Control Information DCI can be public DCI.
In practical applications, in addition to utilizing public DCI, base station can also carry out above-mentioned notice using preset special carrier, that is, utilize
The DCI of special carrier carries above- mentioned information, to indicate to send SRS on up-link carrier which UE be not configured at.
Step 103, the UE according to the notice of base station, it is selected go out uplink carrier group in send on each carrier wave
SRS。
In practical applications, UE can in a certain order, it is selected go out uplink carrier group in send out on each carrier wave
Send SRS.Preferably, the UE can according to corresponding descending carrier serving cell identify ascending order, it is selected go out uplink carry
In wave group SRS is sent on each carrier wave.In practical applications, SRS can also be sent according to other rules, for example, being visited to improve
Efficiency is surveyed, SRS can also be sent over a number of carriers simultaneously every time, specifically, can determine to send simultaneously according to the ability of UE
The carrier number of SRS.
Step 104, the base station obtain the uplink signal-channel quality of corresponding carriers using the SRS, in the downlink of the UE
In the range of the configured up-link carrier of the corresponding up-link carrier not being configured of carrier wave and the UE, according to the up channel matter
It measures and carries out up-link carrier switching for the UE.
It, will be in the configured of the corresponding up-link carrier not being configured of the descending carrier of the UE and the UE in this step
In the range of up-link carrier, up-link carrier switching is carried out for the UE, it, can when considerably increasing carrier switch compared to existing scheme
With the number of carrier wave of consideration, it is thereby possible to select the measured carrier wave of pledge, really realizes that the Fast carrier in carrier aggregation is cut
It changes, gives full play to the advantage of Fast carrier switching.
Specific carrier switching process in this step is known to the skilled artisan details are not described herein.
Fig. 3 be with a kind of corresponding carrier switch system of the above method, as shown in figure 3, the system includes：
Base station eNB, for being grouped in advance to the up-link carrier not being configured of user equipment (UE), and by it is obtained not
The uplink carrier group of configuration is notified to the UE；When the UE need carry out up-link carrier switching when, from it is described be not configured it is upper
In row carrier wave set, select the uplink carrier group for needing to trigger detection reference signal SRS detections and notify to the UE；Using institute
The SRS for stating UE transmissions obtains the uplink signal-channel quality of corresponding carriers, in the corresponding uplink not being configured of the descending carrier of the UE
In the range of the configured up-link carrier of carrier wave and the UE, up-link carrier is carried out for the UE according to the uplink signal-channel quality
Switching.
User equipment (UE), for the notice according to base station, it is selected go out uplink carrier group in send out on each carrier wave
Send SRS.
Preferably, the base station, for using Downlink Control Information (DCI) by it is selected go out the up-link carrier not being configured
Group notice is to the UE.
Preferably, the Downlink Control Information is public DCI.
Preferably, the Downlink Control Information is the Downlink Control Information of preset special carrier.
Preferably, the UE, for the ascending order identified according to corresponding descending carrier serving cell, sends the SRS.
In conclusion the foregoing is merely a prefered embodiment of the invention, it is not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (10)
- A kind of 1. carrier switch method, which is characterized in that including：Network side is in advance grouped the up-link carrier not being configured of user equipment (UE), and by the obtained uplink not being configured Carrier wave set is notified to the UE；When the UE needs to carry out up-link carrier switching, needs are selected in base station from the uplink carrier group not being configured The uplink carrier group of triggering detection reference signal SRS detections is simultaneously notified to the UE；The UE according to the notice of base station, it is selected go out uplink carrier group in send SRS on each carrier wave；The base station obtains the uplink signal-channel quality of corresponding carriers using the SRS, corresponding not in the descending carrier of the UE In the range of the configured up-link carrier of the up-link carrier of configuration and the UE, according to the uplink signal-channel quality for the UE into Row up-link carrier switches.
- 2. according to the method described in claim 1, it is characterized in that, the base station utilizes Downlink Control Information DCI by selected by The uplink carrier group not being configured gone out is notified to the UE.
- 3. according to the method described in claim 2, it is characterized in that, the Downlink Control Information is public DCI.
- 4. according to the method described in claim 2, it is characterized in that, the Downlink Control Information is under preset special carrier Row control information.
- 5. according to the method described in claim 1, it is characterized in that, what the UE was identified according to corresponding descending carrier serving cell Ascending order sends the SRS.
- 6. a kind of carrier switch system, which is characterized in that including：Base station eNB for being grouped in advance to the up-link carrier not being configured of user equipment (UE), and is not configured obtained Uplink carrier group notify to the UE；When the UE needs to carry out up-link carrier switching, carried from the uplink not being configured In wave group, select the uplink carrier group for needing to trigger detection reference signal SRS detections and notify to the UE；Utilize the UE The SRS of transmission obtains the uplink signal-channel quality of corresponding carriers, in the corresponding up-link carrier not being configured of the descending carrier of the UE And in the range of the configured up-link carrier of the UE, up-link carrier is carried out for the UE according to the uplink signal-channel quality and is cut It changes.User equipment (UE), for the notice according to base station, it is selected go out uplink carrier group in send on each carrier wave SRS。
- 7. system according to claim 6, which is characterized in that the base station, for utilizing Downlink Control Information DCI by institute The uplink carrier group not being configured selected is notified to the UE.
- 8. system according to claim 7, which is characterized in that the Downlink Control Information is public DCI.
- 9. system according to claim 7, which is characterized in that the Downlink Control Information is under preset special carrier Row control information.
- 10. system according to claim 6, which is characterized in that the UE, for according to corresponding descending carrier serving cell The ascending order of mark sends the SRS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222466.1A CN108243135B (en) | 2016-12-27 | 2016-12-27 | Carrier switching method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222466.1A CN108243135B (en) | 2016-12-27 | 2016-12-27 | Carrier switching method and system |
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| Publication Number | Publication Date |
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| CN108243135A true CN108243135A (en) | 2018-07-03 |
| CN108243135B CN108243135B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611222466.1A Expired - Fee Related CN108243135B (en) | 2016-12-27 | 2016-12-27 | Carrier switching method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958091A (en) * | 2018-09-26 | 2020-04-03 | 中国移动通信有限公司研究院 | Configuration method, base station and terminal for uplink SRS antenna transmission |
| CN115225220A (en) * | 2021-04-16 | 2022-10-21 | 大唐移动通信设备有限公司 | Transmission processing method and device for carrier switching |
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| CN102238552A (en) * | 2010-04-30 | 2011-11-09 | 索尼公司 | Component carrier selection method, base station, terminal and communication system |
| KR20120015279A (en) * | 2010-08-11 | 2012-02-21 | 삼성전자주식회사 | Method and apparats for performing carrier switching in a wireless communication system using multi-carriers |
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| CN102612851A (en) * | 2009-11-11 | 2012-07-25 | 瑞典爱立信有限公司 | Methods and devices for switching anchor carrier |
| CN105376812A (en) * | 2014-08-29 | 2016-03-02 | 电信科学技术研究院 | Uplink transmission main carrier switching and control method and apparatus, base station, and UE |
| CN105577338A (en) * | 2014-10-17 | 2016-05-11 | 成都鼎桥通信技术有限公司 | Switching method and device for primary and secondary carriers in asymmetric uplink carrier aggregation |
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2016
- 2016-12-27 CN CN201611222466.1A patent/CN108243135B/en not_active Expired - Fee Related
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958091A (en) * | 2018-09-26 | 2020-04-03 | 中国移动通信有限公司研究院 | Configuration method, base station and terminal for uplink SRS antenna transmission |
| CN110958091B (en) * | 2018-09-26 | 2022-06-07 | 中国移动通信有限公司研究院 | Configuration method, base station and terminal for uplink SRS antenna transmission |
| CN115225220A (en) * | 2021-04-16 | 2022-10-21 | 大唐移动通信设备有限公司 | Transmission processing method and device for carrier switching |
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| Publication number | Publication date |
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| CN108243135B (en) | 2021-05-14 |
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