CN105406951A - Reference signal configuration method - Google Patents
Reference signal configuration method Download PDFInfo
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- CN105406951A CN105406951A CN201410453479.4A CN201410453479A CN105406951A CN 105406951 A CN105406951 A CN 105406951A CN 201410453479 A CN201410453479 A CN 201410453479A CN 105406951 A CN105406951 A CN 105406951A
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- reference signal
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Abstract
The invention discloses a method for configuring a first number of reference signals for unauthorized carrier in an LTE communication system, wherein the first number is greater than one. The method comprises a step: distributing orthogonal resources for the first number of reference signals.
Description
Technical field
The present invention relates to communication technical field, particularly relate to wireless communication technology field.
Background technology
At wireless communication field, generally speaking, traditional deployment way is that system works is authorizing frequency range (licensedband), and namely whole frequency spectrum resource all keeps for this system to use.Typically, LTE communication system is exactly use authority band operation.
But, along with the further growth of wireless traffic particularly wireless data service, the capacity of wireless communication system and band requirement are also improved thereupon.In this case, the mandate resource of frequency range of LTE system seems relative deficiency.Therefore, one of nearest in LTE field study hotspot is exactly how to utilize the resource of unauthorized frequency range to shunt data service occurred frequently.
One of them typical scene is, LTE system uses the frequency range of WiFi system.The i.e. community of LTE system and the community of WiFi system situation about coexisting at least partly on geographical position.In this case, if LTE system can use the frequency range of WiFi to carry out service distributing in the moment of some high capacity, obviously greatly can improve the performance of system, thus effectively tackle high capacity application scenarios.This kind of scheme is referred to as subordinate in LTE (LTEinUnlicensedspectrum the is called for short LTE-U) system of unauthorized carrier wave.
Obviously, in LTE-U systematic difference, how to determine that the channel condition information of unauthorized carrier wave is vital.In existing LTE system, in order to obtain accurate channel status, we have employed the way sending reference signal to subscriber equipment (UserEquipment is called for short UE) by base station and solve.But under the application scenarios of LTE-U, the method is but encountered by following problem:
From accurately plan thus ensure that the LTE network that geographic isolation/frequency range is isolated is different, under the application scenarios of LTE-U, different operators can use same unauthorized carrier wave in same region, thus inevitably there will be: certain UE receives the different reference signal that multiple operators base station sends simultaneously, thus result in common channel (Co-channel) interference, to such an extent as to accurate channel information cannot be obtained.Therefore, in LTE-U system, the reference signal configuration problem under multi-operator coexisted environment must be solved.
So target of the present invention is exactly find a kind of new reference signal configuration method; The reference signal that this method needs to make LTE system reasonably can configure multiple operator is with the conflict between avoiding mutually; Guarantee that UE can successfully receive corresponding reference signal again; Also will compatible as much as possible existing specification, avoid the change of existing protocol excessive.
Summary of the invention
For solving the aforementioned problems in the prior, the present invention proposes a kind of new reference signal configuration method.By distributing orthogonal resource for the reference signal of different operators, thus guarantee can not produce conflict between multiple reference signal simultaneously.
Particularly, according to a first aspect of the invention, propose a kind of is the method that unauthorized carrier wave configures the first quantity reference signal in LTE communication system, wherein, described first quantity is greater than 1, and described method comprises: for a described first quantity reference signal distributes orthogonal resource.
Preferably, a described first quantity reference signal corresponds respectively to the operator that the first quantity uses described unauthorized carrier wave.
More preferably, describedly distribute orthogonal resource and comprise for a described first quantity reference signal: described orthogonal resource is configured respectively to a described first quantity operator.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise: described orthogonal resource is bound with the first quantity Operator ID respectively, wherein, a described first quantity Operator ID corresponds respectively to a described first quantity operator.
Preferably, described orthogonal resource at least comprises orthogonal time-domain resource.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise for a described first quantity reference signal distributes different signal time-domain transmission side-play amounts.
Preferably, described orthogonal resource at least comprises orthogonal frequency domain resource.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise for a described first quantity reference signal distributes different frequency offsets.
Preferably, described orthogonal resource at least comprises orthogonal code domain resource.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise for a described first quantity reference signal distributes orthogonal coded sequence.
More preferably, also comprising base station in described LTE communication system by sending the first message with the mandate carrier wave of described unauthorized carrier aggregation to subscriber equipment, wherein, in described first message, comprising the information of the Resourse Distribute being used to indicate described reference signal.
More preferably, also comprise and determine the described Operator ID of described Operator ID or Stochastic choice according to the mandate carrier wave of described unauthorized carrier aggregation.
According to a second aspect of the invention, propose a kind of is the equipment that unauthorized carrier wave configures the first quantity reference signal in LTE communication system, and wherein, described first quantity is greater than 1, described equipment comprises: distribution module, for distributing orthogonal resource for a described first quantity reference signal.
Preferably, a described first quantity reference signal corresponds respectively to the operator that the first quantity uses described unauthorized carrier wave.
More preferably, describedly distribute orthogonal resource and comprise for a described first quantity reference signal: described orthogonal resource is configured respectively to a described first quantity operator.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise: described orthogonal resource is bound with the first quantity Operator ID respectively, wherein, a described first quantity Operator ID corresponds respectively to a described first quantity operator.
Preferably, described orthogonal resource at least comprises orthogonal time-domain resource.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise for a described first quantity reference signal distributes different signal time-domain transmission side-play amounts.
Preferably, described orthogonal resource at least comprises orthogonal frequency domain resource.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise for a described first quantity reference signal distributes different frequency offsets.
Preferably, described orthogonal resource at least comprises orthogonal code domain resource.
More preferably, distribute orthogonal resource for a described first quantity reference signal to comprise for a described first quantity reference signal distributes orthogonal coded sequence.
In the present invention, by distributing orthogonal resource for the reference signal of different operators, ensure that these reference signals can not produce common channel confliction; Indicated by signaling or bind carrier ID, ensure that the corresponding reference signal of acceptance that UE can be correct; Only need introduce a small amount of signaling simultaneously, thus farthest keep with existing specification compatible.
Accompanying drawing explanation
Read the following detailed description to non-limiting example by referring to accompanying drawing, further feature of the present invention, object and advantage will be more obvious.
Fig. 1 shows according to a kind of schematic diagram configuring the method for reference signal in LTE communication system of the present invention;
Fig. 2 shows the schematic diagram that another kind according to the present invention configures the method for reference signal in LTE communication system;
Fig. 3 shows the schematic diagram that another kind according to the present invention configures the method for reference signal in LTE communication system.
Wherein, same or analogous Reference numeral represents same or analogous steps characteristic or device/module.
Embodiment
In the specific descriptions of following preferred embodiment, with reference to the accompanying drawing formed appended by a part of the present invention.Appended accompanying drawing shows by way of example and can realize specific embodiment of the present invention.The embodiment of example is not intended to limit according to all embodiments of the present invention.Be appreciated that under the prerequisite not departing from scope of the present invention, other embodiments can be utilized, also can carry out amendment that is structural or logicality.Therefore, following specific descriptions are also nonrestrictive, and scope of the present invention limited by appended claim.
First, there is the region that a LTE communication system covers, in this region, can comprise base station and the UE of more than one operator simultaneously in application according to the present invention scene.Also there is other unauthorized carrier wave in this this region external, typically, such as, also there is the carrier wave of WiFi system.And when the base station of above-mentioned multiple operator all wants that sending respective reference signal on this unauthorized carrier wave performs channel measurement for respective UE, the first quantity reference signal is just present in the scope of this communication system, wherein, this first quantity is greater than 1.Typically, an above-mentioned first quantity reference signal corresponds respectively to different operators, (certainly wherein existing when several reference signal corresponds to an operator and be suitable for the present invention too, is below easy description, for situation one to one).And common channel confliction may be produced between these measuring-signals from different operators.For this reason, this LTE communication system needs for these reference signals distribute orthogonal resource to address this problem.Be exactly more than basic scheme of the present invention.
On this basis, according to one embodiment of present invention, a kind of method configuring reference signal in LTE communication system is proposed.Concrete, comprise and be at least above-mentioned multiple reference signal and distribute orthogonal time-domain resource.Even if these reference signals offset one from another in time domain.
Further, different time-domain transmission side-play amounts (transmissionoffset) can be distributed for the reference signal of different operators.As in accompanying drawing 1, signal is with superframe (superframe) for unit in the transmission of time domain, and a superframe comprises several transmission frame.Wherein have in each superframe on a frame and can send reference signal, typically can comprise cell special reference (Cell-specificreferencesignals is called for short CRS)/master sync signal (PrimarySynchronizationSignal is called for short PSS)/auxiliary synchronous signals (SecondarySynchronizationSignal is called for short SSS) etc.And system can configure different time-domain transmission side-play amounts for operator A and operator B, namely make them in respective superframe, send that frame of reference signal not overlapping in time domain, as shown in Figure 1.Concrete configuration mode can be such as, to determine respective time-domain transmission side-play amount with the hash function (Hashfunction) of each Operator ID associated.It is pointed out that above allocative decision is only example, other any schemes can distributing orthogonal time-domain resource can realize object of the present invention all equally, thus all belong to protection scope of the present invention.
According to another embodiment of the invention, a kind of method configuring reference signal in LTE communication system is proposed.Concrete, comprise and be at least above-mentioned multiple reference signal and distribute orthogonal frequency domain resource.Namely these reference signals are made to offset one from another at frequency domain.
Further, different frequency offsets (frequencyshifts) can be distributed for the reference signal of different operators.As in accompanying drawing 2, the frequency band of this unauthorized carrier wave comprises 25 PRB couple, and the reference signal of the operator A that 4 different, B, C, D occupies a part (6 PRB to) for whole frequency band respectively, and they are not overlapping mutually each other.Namely above-mentioned distribution method makes these reference signals offset one from another at frequency domain.It is pointed out that above allocative decision is only example, other any schemes can distributing orthogonal frequency domain resource can realize object of the present invention all equally, thus all belong to protection scope of the present invention.
According to another embodiment of the invention, a kind of method configuring reference signal in LTE communication system is proposed.Concrete, comprise and be at least above-mentioned multiple reference signal and distribute orthogonal code domain resource.Namely these reference signals are made to offset one from another in code domain.
Further, orthogonal coded sequence (orthogonalsequence) can be distributed for the reference signal of different operators.As in accompanying drawing 3,2 different operator A, 4 Walsh codes that B uses respectively are (+1 ,+1, + 1, + 1) and (+1 ,+1 ,-1,-1), this is two groups of orthogonal coded sequences, thus guarantees that the reference signal of above-mentioned different operators is orthogonal in code domain, thus can not produce conflict.It is pointed out that above allocative decision is only example, other any schemes can distributing orthogonal code domain resource can realize object of the present invention all equally, thus all belong to protection scope of the present invention.
In addition, above-mentioned orthogonal Resource Allocation Formula both can be used alone, also can conbined usage.Such as, can distribute orthogonal time domain and frequency domain resource simultaneously, distribute orthogonal time domain even simultaneously, frequency domain and code domain resource and other orthogonal resources, the advantage of conbined usage further to reduce the possibility of conflict.
Further, above-mentioned Resource Allocation Formula both can by realizing above-mentioned orthogonal resource distribution to the mode of different operators, and the mode also can bound mutually by the same Operator ID of above-mentioned orthogonal resource (operatoridentity) is realized.
Preferably, when adopting configuration mode to realize, the base station of the different operators in this LTE system can send the first message to the UE of its service, comprising the information being used to refer to above-mentioned orthogonal resource and being configured to this operator, and UE just can receive the reference signal of this operator in corresponding resource.This first message can be sent by the mandate carrier wave be polymerized with this unauthorized carrier wave.
Preferably, when adopting binding mode to realize, the different operators identifier in this LTE system corresponds to different operators.And the UE of different operators carrys out the corresponding reference signal of blind decoding by respective Operator ID.Determine that the method for Operator ID can be determine according to the information of mandate carrier wave of being polymerized with this unauthorized carrier wave, such as, PLMNID or EARFCN of use authority carrier wave can be used as Operator ID; When with no authorized carrier wave and this unauthorized carrier wave phase-polymerization, the Operator ID of Stochastic choice also can be used.
Below introduce the equipment corresponding with said method provided by the present invention again, in view of the steps characteristic in unit/device characteristic wherein and said method has corresponding relation, will conform to the principle of simplicity.
The present invention proposes a kind of is the equipment that unauthorized carrier wave configures the first quantity reference signal in LTE communication system, and wherein, described first quantity is greater than 1, and described equipment comprises:
Distribution module, for distributing orthogonal resource for a described first quantity reference signal.
Be described embodiments of the invention above, but the present invention is not limited to specific system, equipment and concrete agreement, those skilled in that art can make various distortion or amendment within the scope of the appended claims.
The those skilled in the art of those the art can pass through research specification, disclosed content and accompanying drawing and appending claims, understand and implement other changes to the execution mode disclosed.In the claims, word " comprises " element and step of not getting rid of other, and wording " one " does not get rid of plural number.In the present invention, " first ", " second " only represent title, do not represent orbution.In the practical application of invention, the function of the multiple technical characteristics quoted during a part possibility enforcement of rights requires.Any Reference numeral in claim should not be construed as the restriction to scope.
Claims (22)
1. be the method that unauthorized carrier wave configures the first quantity reference signal in LTE communication system, wherein, described first quantity is greater than 1, and described method comprises:
For a described first quantity reference signal distributes orthogonal resource.
2. method according to claim 1, wherein, a described first quantity reference signal corresponds respectively to the operator that the first quantity uses described unauthorized carrier wave.
3. method according to claim 2, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise:
Described orthogonal resource is configured respectively to a described first quantity operator.
4. method according to claim 2, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise:
Described orthogonal resource bound with the first quantity Operator ID respectively, wherein, a described first quantity Operator ID corresponds respectively to a described first quantity operator.
5. method according to claim 1, wherein, described orthogonal resource at least comprises orthogonal time-domain resource.
6. method according to claim 5, wherein, distributes orthogonal resource for a described first quantity reference signal and comprises for a described first quantity reference signal distributes different signal time-domain transmission side-play amounts.
7. method according to claim 1, wherein, described orthogonal resource at least comprises orthogonal frequency domain resource.
8. method according to claim 7, wherein, distributes orthogonal resource for a described first quantity reference signal and comprises for a described first quantity reference signal distributes different frequency offsets.
9. method according to claim 1, wherein, described orthogonal resource at least comprises orthogonal code domain resource.
10. method according to claim 9, wherein, distributes orthogonal resource for a described first quantity reference signal and comprises for a described first quantity reference signal distributes orthogonal coded sequence.
11. methods according to claim 3, also comprise:
Base station in described LTE communication system, by sending the first message with the mandate carrier wave of described unauthorized carrier aggregation to subscriber equipment, wherein, comprises the information of the Resourse Distribute being used to indicate described reference signal in described first message.
12. methods according to claim 4, also comprise:
The described Operator ID of described Operator ID or Stochastic choice is determined according to the mandate carrier wave with described unauthorized carrier aggregation.
13. 1 kinds is the equipment that unauthorized carrier wave configures the first quantity reference signal in LTE communication system, and wherein, described first quantity is greater than 1, and described equipment comprises:
Distribution module, for distributing orthogonal resource for a described first quantity reference signal.
14. according to the equipment described in claim 113, and wherein, a described first quantity reference signal corresponds respectively to the operator that the first quantity uses described unauthorized carrier wave.
15. equipment according to claim 14, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise:
Described orthogonal resource is configured respectively to a described first quantity fortune villous themeda business.
16. equipment according to claim 14, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise:
Described orthogonal resource bound with the first quantity Operator ID respectively, wherein, a described first quantity Operator ID corresponds respectively to a described first quantity operator.
17. equipment according to claim 13, wherein, described orthogonal resource at least comprises orthogonal time-domain resource.
18. equipment according to claim 17, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise for a described first quantity reference signal distributes different signal time-domain transmission side-play amounts.
19. equipment according to claim 13, wherein, described orthogonal resource at least comprises orthogonal frequency domain resource.
20. equipment according to claim 19, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise for a described first quantity reference signal distributes different frequency offsets.
21. equipment according to claim 13, wherein, described orthogonal resource at least comprises orthogonal code domain resource.
22. equipment according to claim 21, wherein, distribute orthogonal resource for a described first quantity reference signal and comprise for a described first quantity reference signal distributes orthogonal coded sequence.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018126834A1 (en) * | 2017-01-06 | 2018-07-12 | 中兴通讯股份有限公司 | Reference signal transmission method and device, and storage medium |
| WO2020029736A1 (en) * | 2018-08-10 | 2020-02-13 | Huawei Technologies Co., Ltd. | Methods for ue-specific rs multiplexing |
| CN110912663A (en) * | 2018-09-15 | 2020-03-24 | 华为技术有限公司 | Communication method and device |
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| CN101877865A (en) * | 2009-04-30 | 2010-11-03 | 中兴通讯股份有限公司 | Method and system for sending measurement reference signal, base station and relay station |
| CN103561408A (en) * | 2013-11-05 | 2014-02-05 | 中国联合网络通信集团有限公司 | Channel distribution method and device, data transmission method and access points |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101877865A (en) * | 2009-04-30 | 2010-11-03 | 中兴通讯股份有限公司 | Method and system for sending measurement reference signal, base station and relay station |
| CN103561408A (en) * | 2013-11-05 | 2014-02-05 | 中国联合网络通信集团有限公司 | Channel distribution method and device, data transmission method and access points |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018126834A1 (en) * | 2017-01-06 | 2018-07-12 | 中兴通讯股份有限公司 | Reference signal transmission method and device, and storage medium |
| WO2020029736A1 (en) * | 2018-08-10 | 2020-02-13 | Huawei Technologies Co., Ltd. | Methods for ue-specific rs multiplexing |
| US10833905B2 (en) | 2018-08-10 | 2020-11-10 | Huawei Technologies Co., Ltd. | Methods for UE-specific RS multiplexing |
| US11705942B2 (en) | 2018-08-10 | 2023-07-18 | Huawei Technologies Co., Ltd. | Methods for UE-specific RS multiplexing |
| CN110912663A (en) * | 2018-09-15 | 2020-03-24 | 华为技术有限公司 | Communication method and device |
| CN110912663B (en) * | 2018-09-15 | 2021-06-01 | 华为技术有限公司 | Communication method and device |
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