CN102438247A - Physical cell identification allocating and obtaining method, base station and user equipment - Google Patents
Physical cell identification allocating and obtaining method, base station and user equipment Download PDFInfo
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- CN102438247A CN102438247A CN2011103436004A CN201110343600A CN102438247A CN 102438247 A CN102438247 A CN 102438247A CN 2011103436004 A CN2011103436004 A CN 2011103436004A CN 201110343600 A CN201110343600 A CN 201110343600A CN 102438247 A CN102438247 A CN 102438247A
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Abstract
The invention provides a physical cell identification allocating and obtaining method, a base station and user equipment, which are used for solving the problem of allocation of a physical cell identification in a carrier aggregation system, wherein the physical cell identification allocation method comprises the steps of: dividing all aggregated composition carriers into a first group of composition carriers used for carrying control signaling and a second group of composition carriers used for bearing data sending by the base station; allocating a public physical cell identification for the first group of composition carriers and the second group of composition carriers by the base station; obtaining a link performance parameter value of a user terminal by the base station; and when determining that the link performance parameter value exceeds a first preset threshold, re-allocating the physical cell identification for the first group of composition carriers and the second group of composition carriers by the base station. By adopting the technical scheme provided by the invention, the defects that the public physical cell identification is singly adopted for increasing the inter-cell interference and different physical cell identifications are singly adopted for reducing channel performance can be overcome.
Description
Technical field
The invention belongs to the communications field, relate to Physical Cell Identifier distribution method in the carrier aggregation system, more specifically, relate to a kind of Physical Cell Identifier distribution, acquisition methods, base station and subscriber equipment.
Background technology
In follow-on broadband wireless communication network, how to solve in the cordless communication network and to support bigger bandwidth to become a key factor that improves inter-cell user terminal throughput and user terminal average throughput under the bandwidth in current wireless communication system and be faced with formidable challenges.
At present; Long-term technological evolution (Long Term Evolution in third generation partner program; LTE) all propose to adopt the mode of carrier aggregation to come in current wireless communication system, to support effectively bigger bandwidth in, to satisfy in the new generation of wireless standard demand to indexs such as throughput, peak rates.Carrier aggregation is to support the key technology of bigger bandwidth in the future broadband wireless communication systems; Through different carrier waves is carried out polymerization; Form the carrier wave of bigger bandwidth, on the bandwidth after the polymerization, support to have stronger ability user side (User Equipment, UE); For example, the bandwidth that surpasses 100MHz in the advanced long-term evolution system (LTE-Advanced).
The distribution of the Physical Cell Identifier on the composition carrier wave that key issue is all polymerizations in the carrier aggregation system, distribution method can be adopted all the public physical cell IDs of forming carrier waves or different Physical Cell Identifier.The public physical cell ID makes in all down links composition carrier waves has identical down link public reference signal (Common Reference Signal; CRS); Synchronizing signal and scrambler; Thereby the cubic measure (CM, Cubic Metric) of increase down link signal and peak-to-average power ratio (Peak to Average Power Ratio, PAPR), and then the interference of increase minizone; Different Physical Cell Identifier can cause corresponding up link to form carrier wave different uplink demodulated reference signal (DeModulation Reference Signal; DMRS), Sounding reference symbol (Sounding Reference Signal; SRS) sequence and different physical uplink link sharing channel (Physical Uplink Shared Channel; PUSCH) frequency hopping pattern owing to signal in orthogonal can lose because of different root sequences, thereby makes uplink performance; Such as, channel estimating, channel Sounding will seriously reduce.
Therefore, in the prior art, there be the increase presence of intercell interference Physical Cell Identifier different that single use public physical cell ID brings and problem that the link performance that causes reduces with single use.
Summary of the invention
The present invention provides a kind of Physical Cell Identifier distribution, acquisition methods; Base station and subscriber equipment are used for solving the increase presence of intercell interference Physical Cell Identifier different with single use that the single use public physical of prior art cell ID brings and problem that the link performance that causes reduces.
For realizing above-mentioned purpose of the present invention, according to a first aspect of the invention, a kind of Physical Cell Identifier distribution method is provided, and has adopted following technical scheme:
The Physical Cell Identifier distribution method is used for carrier aggregation system, comprising: the base station is divided into first composition carrier wave that is used for bearer control signalling and the second composition carrier wave that is used to carry the data transmission with the composition carrier wave of all polymerizations; The base station is that the first composition carrier wave and second is formed the public Physical Cell Identifier of allocation of carriers; The base station obtains the link performance parameters value of user side; And the base station is that the first composition carrier wave and/or the second composition carrier wave are redistributed Physical Cell Identifier when definite link performance parameters value exceeds first predetermined threshold value.
Further; The base station is that the first composition carrier wave and the public Physical Cell Identifier of the second composition allocation of carriers comprise: the base station passes through displacement circulation timei or phaseshift step size produces whole public Physical Cell Identifier, and the public Physical Cell Identifier that will produce is distributed to the first composition carrier wave and the second composition carrier wave.
Further; When the parameter value base station exceeds first predetermined threshold value in definite parameter value link performance parameters value; Forming carrier wave and/or parameter value second for parameter value first forms carrier wave and redistribute Physical Cell Identifier and comprise: the parameter value base station is that parameter value second is formed allocation of carriers and the different Physical Cell Identifier of the parameter value first composition carrier wave when confirming that cubic measure and peak-to-average power ratio that link performance parameters value that parameter value first is formed carrier wave does not exceed parameter value first predetermined threshold value, down link signal exceed link performance parameters value that second predetermined threshold value and parameter value second form carrier wave and exceed parameter value first predetermined threshold value.
Further; When the parameter value base station exceeds first predetermined threshold value in definite parameter value link performance parameters value; Forming carrier wave and/or parameter value second for parameter value first forms carrier wave and redistribute Physical Cell Identifier and comprise: the parameter value base station is when confirming that link performance parameters value that parameter value first is formed carrier wave exceeds link performance parameters value that parameter value first predetermined threshold value and parameter value second form carrier wave and do not exceed parameter value first predetermined threshold value, and the parameter value base station is formed carrier wave or parameter value second and formed carrier wave and produce new Physical Cell Identifier through changing composition carrier wave that parameter value displacement circulation timei or phaseshift step size are all polymerizations of parameter value or parameter value first.
Further; When the parameter value base station exceeds first predetermined threshold value in definite parameter value link performance parameters value; Forming carrier wave and/or parameter value second for parameter value first forms carrier wave and redistribute Physical Cell Identifier and comprise: the parameter value base station is that parameter value second is formed allocation of carriers and the different Physical Cell Identifier of the parameter value first composition carrier wave when confirming that link performance parameters value that parameter value first is formed carrier wave exceeds link performance parameters value that parameter value first predetermined threshold value and parameter value second form carrier wave and exceeds parameter value first predetermined threshold value.
Further; When the base station exceeds first predetermined threshold value in definite link performance parameters value; Be first to form carrier wave and/or second and form carrier wave and redistribute Physical Cell Identifier and also comprise: the base station is being first when forming carrier wave and redistributing Physical Cell Identifier, be first form carrier wave each form carrier wave and all distribute identical Physical Cell Identifier; The base station is being second when forming carrier wave and redistributing Physical Cell Identifier, be second form carrier wave each form the Physical Cell Identifier that allocation of carriers has nothing in common with each other.
Further; The Physical Cell Identifier distribution method also comprises: the base station is divided into the monitoring control composition carrier wave that carries full control signal with first carrier and forms carrier wave with the assist control of carrying the relevant signaling of composition carrier wave; Wherein, monitoring is formed carrier wave and is comprised that one in the first carrier is formed carrier wave.
According to a second aspect of the invention, a kind of base station is provided, and adopts following technical scheme:
The base station comprises: divide module, be used for the composition carrier wave of all polymerizations is divided into first composition carrier wave that is used for bearer control signalling and the second composition carrier wave that is used to carry the data transmission; Distribution module is used to first and forms carrier wave and the public Physical Cell Identifier of the second composition allocation of carriers; Acquisition module is used for the link performance parameters value that the base station obtains user side; And redistribute module, and be used for the base station when definite link performance parameters value exceeds first predetermined threshold value, be that the first composition carrier wave and/or the second composition carrier wave are redistributed Physical Cell Identifier.
Further, distribution module comprises: generation module, and be used for the base station and pass through displacement circulation timei or the whole public Physical Cell Identifier of phaseshift step size generation, and the public Physical Cell Identifier that will produce is distributed to the first composition carrier wave and the second composition carrier wave.
Further; Redistributing module comprises: redistribute submodule; Said base station confirm said first form carrier wave the link performance parameters value cubic measure and the peak-to-average power ratio that do not exceed said first predetermined threshold value, the down link signal link performance parameters during of forming carrier wave greater than second predetermined threshold value and said second also greater than said first predetermined threshold value, be said second to form allocation of carriers and the different Physical Cell Identifier of the said first composition carrier wave.
Further; Redistributing module also comprises: change module; Be used for the base station when the link performance parameters value of definite second composition carrier wave does not exceed first predetermined threshold value, the base station passes through to change displacement circulation timei or phaseshift step size is composition carrier wave or the first composition carrier wave or the new Physical Cell Identifier of the second composition carrier wave generation of all polymerizations.
According to a third aspect of the present invention, a kind of Physical Cell Identifier acquisition methods is provided, and adopts following technical scheme:
The Physical Cell Identifier acquisition methods comprises: user side obtains and uses the base station to distribute to first and is used for the public physical cell ID that first of bearer control signalling is formed carrier wave and is used to carry the second composition carrier wave of data transmission; User side starts link performance parameters to be measured, and the link performance parameters value is fed back to the base station; And user side to obtain the base station be first to form carrier wave and/or second and form carrier wave and redistribute new Physical Cell Identifier when definite link performance parameters value exceeds first predetermined threshold value.
Further, the Physical Cell Identifier acquisition methods also comprises: user side is measured the cubic measure and the peak-to-average power ratio of down link signal, and with the result back base station; User side obtains the base station and is confirming that cubic measure and peak-to-average power ratio are the new Physical Cell Identifier of the second composition allocation of carriers when exceeding second predetermined threshold value.
Further, user side obtains the base station and comprises for the new Physical Cell Identifier that user side distributes again: user side receives the indicating bit that the base station sends new Physical Cell Identifier; User side starts Cell searching and obtains new Physical Cell Identifier with selecting flow process according to indicating bit.
According to a fourth aspect of the present invention, a kind of subscriber equipment is provided, and adopts following technical scheme:
Subscriber equipment comprises: first acquisition module, be used for user side obtain and use the base station to distribute to first to be used for first of bearer control signalling form carrier wave be used to carry data send second form carrier wave the public physical cell ID; Measurement module is used for user side and starts the link performance parameters measurement, and the link performance parameters value of measuring is fed back to the base station; And first redistribute module, and being used for user side, to obtain the base station be first to form carrier wave and/or second and form carrier wave and redistribute new Physical Cell Identifier when definite link performance parameters value exceeds first predetermined threshold value.
Further, subscriber equipment also comprises: feedback module, be used for cubic measure and peak-to-average power ratio that user side is measured user side, and with the result back base station; Second redistributes module, is used for user side and obtains the base station and confirming that cubic measure and peak-to-average power ratio are the new Physical Cell Identifier that the second composition carrier wave is redistributed when exceeding second predetermined threshold value.
Can find out; The method of the present invention through adopting public physical cell ID and different Physical Cell Identifier to combine; The defective of having avoided single employing public physical cell ID and the different Physical Cell Identifier of single employing to be brought is to form the corresponding Physical Cell Identifier of allocation of carriers according to the link performance of forming carrier wave in the carrier aggregation specifically.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the main flow chart of Physical Cell Identifier distribution method of the embodiment of the invention;
Fig. 2 is the particular flow sheet of the Physical Cell Identifier distribution method of the embodiment of the invention;
Fig. 3 is the primary structure sketch map of the base station of the embodiment of the invention;
Fig. 4 is the main flow chart of the Physical Cell Identifier acquisition methods of the embodiment of the invention; And
Fig. 5 is the primary structure sketch map of the subscriber equipment of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 is the main flow chart of Physical Cell Identifier distribution method of the embodiment of the invention.
Referring to shown in Figure 1, the Physical Cell Identifier distribution method comprises:
S101: the base station is divided into first composition carrier wave that is used for bearer control signalling and the second composition carrier wave that is used to carry the data transmission with the composition carrier wave of all polymerizations;
S103: the base station is that the first composition carrier wave and second is formed the public Physical Cell Identifier of allocation of carriers;
S105: the base station obtains the link performance parameters value of user side; And
S107: when the base station exceeds first predetermined threshold value in definite link performance parameters value, be that the first composition carrier wave and the second composition carrier wave are redistributed Physical Cell Identifier.
In the technique scheme of present embodiment, first forms carrier wave forms carrier wave for control, and the second composition carrier wave is that data are formed carrier wave.The base station is that carrier wave is formed in user side definition control and data are formed carrier wave; Carrier wave is formed in all control can use identical public physical cell ID, carries whole control signalings; Data are formed carrier wave also can use the public physical cell ID; Wherein, control is formed carrier wave and is used for bearer control signalling, such as, CRS, DMRS, SRS, PUSCH, physical downlink control channel, physical control format sign channel, Physical HARQ Indicator Channel etc.Data are formed the data of carriers carry user side UE and are sent.Therefore, because forming carrier wave, all control uses identical public physical cell ID, so the interference of intercarrier reduces significantly.The base station continues to obtain the path loss and the area interference value of user side, when path loss and area interference value exceed first predetermined threshold value, forms carrier wave for control and redistributes Physical Cell Identifier with data composition carrier wave.Wherein, First predetermined threshold value is set according to concrete link performance; When path loss and area interference value reached this first predetermined threshold value, the base station was formed carrier wave for control and is formed carrier wave with data and redistribute Physical Cell Identifier, so then can make the good link performance of up link maintenance.
Preferably, when forming carrier wave and data and form carrier wave and redistribute Physical Cell Identifier for control in the base station, the identical Physical Cell Identifier of control composition allocation of carriers for all can significantly reduce the interference of intercarrier like this.
Preferably; When forming carrier wave and redistribute Physical Cell Identifier for control with data composition carrier wave in the base station; Consider that different data form the difference of environmental conditions such as channel estimating, channel Sounding, path loss, interference between the carrier wave, therefore, each that form carrier wave for data formed the Physical Cell Identifier that allocation of carriers has nothing in common with each other and distributed; Use the different coding modulation scheme on the different carrier waves, to improve the data transfer performance of user side.
Preferably; The base station also will be controlled and form carrier wave and be divided into monitoring control and form carrier wave and form carrier wave with assist control, and wherein, only therein one composition carrier wave separately of carrier wave is formed in monitoring control; And carry whole control signals; That is, CRS, DMRS, SRS, PUSCH, PDCCH, PCFICH, PHICH etc. can improve control like this and form the spectrum of carrier utilance.Control the remainder of forming carrier wave and be called assist control composition carrier wave, assist control composition carrier wave only carries SRS, the automatic HARQ of re-transmission of mixing etc. and the relevant signaling of composition carrier wave measurement.
Fig. 2 is the particular flow sheet of the Physical Cell Identifier distribution method of the embodiment of the invention.
Referring to shown in Figure 2, the Physical Cell Identifier distribution method specifically comprises:
Step S201: the base station is that carrier wave is formed in user side definition control and data are formed carrier wave;
Step S202: the base station is that carrier wave definition monitoring control composition carrier wave is formed in the control of user side and a plurality of assist control is formed carrier wave;
Step S203: the base station is formed carrier wave in monitoring control the Physical Cell Identifier indicating bit partly is set, and carries through PDCCH or PCFICH;
Step S204: the base station is provided with user side link performance parameters first comparison threshold value;
Step S205: the base station is provided with CM/PAPR second comparison threshold value;
Step S206: the base station is that all composition carrier waves of user side are provided with public Physical Cell Identifier and displacement circulation timei or the whole Physical Cell Identifier of phaseshift step size generation;
Step S207: the base station obtains user side and uses the composition carrier wave to carry out the carrier aggregation operation, starts Sounding flow process measure link performance parameter value;
Step S208: the base station receive the link performance parameters value and with the link performance threshold comparison, when control is formed the carrier link performance parameter and is surpassed first comparison threshold value, execution in step S212;
Step S209: the base station obtains the CM/PAPR value of client feeds back;
Step S210: whether base station judges CM/PAPR value greater than second comparison threshold value, in this way, and execution in step S212, if not, execution in step S211;
Step S211: user side uses Physical Cell Identifier and carries out the carrier aggregation operation with the composition carrier wave that distributes;
Step S212: whether the link performance parameters value that judgment data is formed carrier wave surpasses first comparison threshold value, if, execution in step S214, if not, execution in step S213;
Step S213: the base station changes displacement circulation timei or phaseshift step size produces Physical Cell Identifier again, and with new sign and composition carrier wave notice user side;
Step S214: the base station is that data are formed carrier wave setting and the different public physical cell ID of control composition carrier wave;
Step S215: the base station is provided with the Physical Cell Identifier indicating bit, and through PDCCH or PCFICH notice user side;
Step S216: user side receives the Physical Cell Identifier indicating bit on PDCCH or the PCFIC, starts Cell searching and selects flow process, obtains new Physical Cell Identifier;
Step S217: whether judgment data forms the link performance parameters of carrier wave greater than first comparison threshold value, if not, returns execution in step S212, if, execution in step S218;
Step S218: user side receives new Physical Cell Identifier and data are formed the carrier wave notice, and log-on data is formed the measurement of carrier wave sounding flow process and fed back to the base station;
Step S219: whether the link performance parameters of judging the sounding measurement is greater than first comparison threshold value, if execution in step S220 if not, returns execution in step S212;
Step S220: the base station is formed carrier wave for all data different Physical Cell Identifier is set, and with new sign and composition carrier wave notice user side.
Technique scheme through present embodiment; The base station is that carrier wave is formed in user side definition control and data are formed carrier wave; And further will control and form carrier wave and be divided into monitoring control and form carrier wave and form carrier wave with assist control, the whole control signal of carrying on the carrier wave is formed in monitoring control therein, and in other part the Physical Cell Identifier indicating bit only is set; The size of required control area when having reduced the control signaling bear, and then reduced overhead.All control is formed carrier wave and is used identical public physical cell ID; Carry whole control signalings; If control is formed carrier wave and is comprised a plurality of independent composition carrier waves, in order effectively to reduce CM and PAPR value, so; Control is formed intercarrier and is adopted the mode of displacement circulation timei or phase shift to distribute Physical Cell Identifier, but is not limited thereto.The public physical cell ID of control composition carrier wave and data composition carrier wave can be identical, the disappearance of the signal in orthogonal performance when minimizing composition intercarrier distributes Physical Cell Identifier; Also can adopt different public physical cell IDs, reach the coverage maximization of control signaling and the remarkable improvement of user side link performance simultaneously.
Fig. 3 is the primary structure sketch map of the base station of the embodiment of the invention.
Referring to shown in Figure 3, the base station comprises:
Redistributing module 307, be used for the base station when definite link performance parameters value exceeds first predetermined threshold value, is that the first composition carrier wave and/or the second composition carrier wave are redistributed Physical Cell Identifier.
Alternatively, distribution module 303 comprises:
The generation module (not shown) is used for the base station and passes through displacement circulation timei or the whole public Physical Cell Identifier of phaseshift step size generation, and the public Physical Cell Identifier that will produce is distributed to the first composition carrier wave and the second composition carrier wave.
Alternatively, redistributing module 307 comprises:
Redistribute the submodule (not shown); Be used for said base station confirm said first form carrier wave the link performance parameters value cubic measure and the peak-to-average power ratio that do not exceed said first predetermined threshold value, the down link signal link performance parameters during of forming carrier wave greater than second predetermined threshold value and said second also greater than said first predetermined threshold value, be said second to form allocation of carriers and the different Physical Cell Identifier of the said first composition carrier wave.
Alternatively, redistributing module 307 also comprises:
Change the module (not shown); Be used for the base station when the link performance parameters value of definite second composition carrier wave does not exceed first predetermined threshold value, the base station passes through to change displacement circulation timei or phaseshift step size is composition carrier wave or the first composition carrier wave or the new Physical Cell Identifier of the second composition carrier wave generation of all polymerizations.
Fig. 4 is the main flow chart of the Physical Cell Identifier acquisition methods of the embodiment of the invention.
Referring to shown in Figure 4, the Physical Cell Identifier acquisition methods comprises:
S401: user side obtains and uses the base station to distribute to first and is used for the public physical cell ID that first of bearer control signalling is formed carrier wave and is used to carry the second composition carrier wave of data transmission;
S403: user side starts link performance parameters to be measured, and parameter value is fed back to the base station; And
S405: it is that the first composition carrier wave and/or the second composition carrier wave are redistributed new Physical Cell Identifier when definite link performance parameters value exceeds first predetermined threshold value that user side obtains the base station.
Technique scheme through present embodiment; User side is through obtaining the identical public physical cell ID of base station assigns; Significantly reduced the interference of intercarrier; When link performance parameters exceeded predetermined threshold value, the user accepted the Physical Cell Identifier of base station assigns again, reduced the disappearance of the signal in orthogonal performance when forming intercarrier distribution Physical Cell Identifier.
Preferably, the Physical Cell Identifier acquisition methods also comprises: user side is measured the cubic measure and the peak-to-average power ratio of user side, and with the result back base station; User side obtains the base station and is confirming that cubic measure and peak-to-average power ratio are the new Physical Cell Identifier that the second composition carrier wave is redistributed when exceeding second predetermined threshold value.
Technique scheme through present embodiment; User side obtains cubic measure and peak-to-average power ratio; And do comparison with predetermined threshold value; And measure when exceeding predetermined threshold value with peak-to-average power ratio in the side, obtain the Physical Cell Identifier that the base station is redistributed, thereby reduce the disappearance of the signal in orthogonal performance when forming intercarrier and distributing Physical Cell Identifier.
Preferably, user side obtains the base station and comprises for the new Physical Cell Identifier that user side distributes again: user side receives the indicating bit that the base station sends new Physical Cell Identifier; User side starts Cell searching and obtains new Physical Cell Identifier with selecting flow process according to indicating bit.
Fig. 5 is the primary structure sketch map of the subscriber equipment of the embodiment of the invention.
Referring to shown in Figure 5, subscriber equipment comprises:
First redistributes module 505, and being used for user side, to obtain the base station be first to form carrier wave and/or second and form carrier wave and redistribute new Physical Cell Identifier when definite link performance parameters value exceeds first predetermined threshold value.
Alternatively, subscriber equipment also comprises:
The feedback module (not shown) is used for cubic measure and peak-to-average power ratio that user side is measured user side, and with the result back base station;
Second redistributes the module (not shown), is used for user side and obtains the base station and confirming that cubic measure and peak-to-average power ratio are the new Physical Cell Identifier that the second composition carrier wave is redistributed when exceeding second predetermined threshold value.
Can find out that through the above embodiment of the present invention the present invention solves Physical Cell Identifier assignment problem in the carrier aggregation; Through the problem of using being used in combination of identical public physical cell ID and different Physical Cell Identifier, solve the channel performance that exists in the adjacent cell interference issues that exists in the public physical cell ID in the carrier aggregation and the different Physical Cell Identifier to reduce.
Only be execution mode of the present invention below, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (16)
1. a Physical Cell Identifier distribution method is used for carrier aggregation system, it is characterized in that, comprising:
The base station is divided into first composition carrier wave that is used for bearer control signalling and the second composition carrier wave that is used to carry the data transmission with the composition carrier wave of all polymerizations;
Said base station is that the said first composition carrier wave and said second is formed the public Physical Cell Identifier of allocation of carriers;
Said base station obtains the link performance parameters value of user side; And
When said base station exceeds first predetermined threshold value in definite said link performance parameters value, form carrier wave for the said first composition carrier wave and/or said second and redistribute Physical Cell Identifier.
2. Physical Cell Identifier distribution method as claimed in claim 1 is characterized in that, said base station is that said first composition carrier wave and the public Physical Cell Identifier of the said second composition allocation of carriers comprise:
Said base station passes through displacement circulation timei or phaseshift step size produces all public Physical Cell Identifier, and the said public Physical Cell Identifier that will produce is distributed to said first composition carrier wave and the said second composition carrier wave.
3. Physical Cell Identifier distribution method as claimed in claim 2; It is characterized in that; When said base station exceeds first predetermined threshold value at definite said link performance, form carrier wave and/or said second and form carrier wave and redistribute Physical Cell Identifier and comprise for said first:
Said base station confirm said first form carrier wave the link performance parameters value cubic measure and the peak-to-average power ratio that do not exceed said first predetermined threshold value, down link signal when exceeding link performance parameters value that second predetermined threshold value and said second forms carrier wave and exceeding said first predetermined threshold value, be said second to form allocation of carriers and the different Physical Cell Identifier of the said first composition carrier wave.
4. Physical Cell Identifier distribution method as claimed in claim 2; It is characterized in that; When said base station exceeds first predetermined threshold value in definite said link performance parameters value, form carrier wave and/or said second and form carrier wave and redistribute Physical Cell Identifier and comprise for said first:
Said base station confirm said first form carrier wave link performance parameters value when exceeding link performance parameters value that said first predetermined threshold value and said second forms carrier wave and not exceeding said first predetermined threshold value, said base station is that the composition carrier wave or said first of said all polymerizations is formed carrier wave or said second and formed carrier wave and produce new Physical Cell Identifier through changing said displacement circulation timei or phaseshift step size.
5. Physical Cell Identifier distribution method as claimed in claim 2; It is characterized in that; When said base station exceeds first predetermined threshold value in definite said link performance parameters value, form carrier wave and/or said second and form carrier wave and redistribute Physical Cell Identifier and comprise for said first:
Said base station confirm said first form carrier wave link performance parameters value when exceeding link performance parameters value that said first predetermined threshold value and said second forms carrier wave and exceeding said first predetermined threshold value, be said second to form allocation of carriers and the different Physical Cell Identifier of the said first composition carrier wave.
6. like each described Physical Cell Identifier distribution method in the claim 3 to 5; It is characterized in that; When said base station exceeds first predetermined threshold value in definite said link performance parameters value, form carrier wave and/or said second and form carrier wave and redistribute Physical Cell Identifier and also comprise for said first:
Said base station is for said first when forming carrier wave and redistributing Physical Cell Identifier, for said first form carrier wave each form carrier wave and all distribute identical Physical Cell Identifier; And
Said base station is for said second when forming carrier wave and redistributing Physical Cell Identifier, for said second form carrier wave each form the Physical Cell Identifier that allocation of carriers has nothing in common with each other.
7. Physical Cell Identifier distribution method as claimed in claim 1 is characterized in that, also comprises:
Said base station is divided into the monitoring control composition carrier wave that carries full control signal with said first carrier and forms carrier wave with the assist control of carrying the relevant signaling of composition carrier wave, and wherein, said monitoring is formed carrier wave and comprised a composition carrier wave in the said first carrier.
8. a base station is characterized in that, comprising:
Divide module, be used for the composition carrier wave of all polymerizations is divided into first composition carrier wave that is used for bearer control signalling and the second composition carrier wave that is used to carry the data transmission;
Distribution module is used to said first and forms carrier wave and the public Physical Cell Identifier of the said second composition allocation of carriers;
Acquisition module is used for the link performance parameters value that said base station obtains user side; And
Redistribute module, be used for said base station when definite said link performance parameters value exceeds first predetermined threshold value, form carrier wave for the said first composition carrier wave and/or said second and redistribute Physical Cell Identifier.
9. base station as claimed in claim 8 is characterized in that, said distribution module comprises:
Generation module is used for said base station and passes through displacement circulation timei or the whole public Physical Cell Identifier of phaseshift step size generation, and the said public Physical Cell Identifier that will produce is distributed to said first composition carrier wave and the said second composition carrier wave.
10. base station as claimed in claim 8 is characterized in that, the said module of redistributing comprises:
Redistribute submodule; Be used for said base station confirm said first form carrier wave the link performance parameters value cubic measure and the peak-to-average power ratio that do not exceed said first predetermined threshold value, the down link signal link performance parameters value during of forming carrier wave greater than second predetermined threshold value and said second also greater than said first predetermined threshold value, be said second to form allocation of carriers and the different Physical Cell Identifier of the said first composition carrier wave.
11. base station as claimed in claim 10 is characterized in that, the said module of redistributing also comprises:
Change module; Be used for said base station confirm said second form carrier wave link performance parameters value when not exceeding said first predetermined threshold value, said base station is that the composition carrier wave or said first of said all polymerizations is formed carrier wave or said second and formed carrier wave and produce new Physical Cell Identifier through changing said displacement circulation timei or phaseshift step size.
12. a Physical Cell Identifier acquisition methods is used for carrier aggregation system, it is characterized in that, comprising:
User side obtains and uses the base station to distribute to first and is used for the public physical cell ID that first of bearer control signalling is formed carrier wave and is used to carry the second composition carrier wave of data transmission;
Said user side starts link performance parameters to be measured, and the link performance parameters value is fed back to said base station; And
It is that said first composition carrier wave and/or the said second composition carrier wave are redistributed new Physical Cell Identifier when definite said link performance parameters value exceeds first predetermined threshold value that said user side obtains said base station.
13. Physical Cell Identifier acquisition methods as claimed in claim 12 is characterized in that, also comprises:
Said user side is measured the cubic measure and the peak-to-average power ratio of said down link signal, and with the said base station of result back;
Said user side obtains said base station and is confirming that said cubic measure and peak-to-average power ratio are the new Physical Cell Identifier that the said second composition carrier wave is redistributed when exceeding second predetermined threshold value.
14. like claim 12 or 13 described Physical Cell Identifier acquisition methods; It is characterized in that it is said first to form carrier wave and/or said second and form carrier wave and redistribute new Physical Cell Identifier and comprise that said user side obtains said base station when definite said link performance parameters value exceeds first predetermined threshold value:
Said user side receives the indicating bit that said base station sends said new Physical Cell Identifier;
Said user side starts Cell searching and obtains said new Physical Cell Identifier with selecting flow process according to said indicating bit.
15. a subscriber equipment is characterized in that, comprising:
First acquisition module, be used for user side obtain and use the base station to distribute to first to be used for first of bearer control signalling form carrier wave be used to carry data send second form carrier wave the public physical cell ID;
Measurement module is used for said user side and starts the link performance parameters measurement, and the link performance parameters value of measuring is fed back to said base station; And
First redistributes module, and being used for said user side, to obtain said base station be said first to form carrier wave and/or said second and form carrier wave and redistribute new Physical Cell Identifier when definite said link performance parameters value exceeds first predetermined threshold value.
16. subscriber equipment as claimed in claim 15 is characterized in that, also comprises:
Feedback module is used for cubic measure and peak-to-average power ratio that said user side is measured said user side, and with the said base station of result back;
Second redistributes module, is used for said user side and obtains said base station and confirming that said cubic measure and peak-to-average power ratio are the new Physical Cell Identifier that the said second composition carrier wave is redistributed when exceeding second predetermined threshold value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110343600.4A CN102438247B (en) | 2011-11-03 | 2011-11-03 | Physical Cell Identifier distributes and acquisition methods, base station and user equipment |
| PCT/CN2012/072913 WO2013063896A1 (en) | 2011-11-03 | 2012-03-23 | Method, base station, and user equipment for assigning and acquiring physical cell identity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110343600.4A CN102438247B (en) | 2011-11-03 | 2011-11-03 | Physical Cell Identifier distributes and acquisition methods, base station and user equipment |
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| CN102438247A true CN102438247A (en) | 2012-05-02 |
| CN102438247B CN102438247B (en) | 2018-02-13 |
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| WO (1) | WO2013063896A1 (en) |
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| Publication number | Publication date |
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| WO2013063896A1 (en) | 2013-05-10 |
| CN102438247B (en) | 2018-02-13 |
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