CN103825627A - Joint detection method and base station - Google Patents
Joint detection method and base station Download PDFInfo
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- CN103825627A CN103825627A CN201310671785.0A CN201310671785A CN103825627A CN 103825627 A CN103825627 A CN 103825627A CN 201310671785 A CN201310671785 A CN 201310671785A CN 103825627 A CN103825627 A CN 103825627A
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Abstract
The invention relates to the technical field of mobile communication, and discloses a joint detection method and a base station. According to the scheme, a base station side delete chain and a channel estimation window corresponding to a terminal of a terminal side non-delete chain are determined; a spreading code corresponding to a non-built chain terminal is acquired according to the channel estimation window; joint detection is carried out on the spreading code and spreading codes corresponding to other terminals which build chains with the base station; signals which send signals respectively sent by different terminals in the same time slot are determined; due to the fact that a user carries out joint detection, intersymbol interference of a signal sent by the user on signals sent by other users which carry out joint detection is eliminated; the demodulation performance of the base station is improved; and a signal of the terminal is not processed as an interference signal, thus power control is not affected, and the service quality of other users which carry out joint detection is improved.
Description
Technical field
The present invention relates to mobile communication technology field, particularly a kind of associated detecting method and base station.
Background technology
TD-SCDMA(Time Division-Synchronous Code Division Multiple Access, TD SDMA) be 3G(3rd Generation, one of the third generation) three large standards in mobile communication technology, its key technology comprises intelligent antenna technology and associated detection technique.
Associated detection technique refers to and makes full use of MAI(Multiple Access Interference, multiple access disturb) in prior information (as: the terminal channel code, the channel estimating of each terminal etc. that know) regard the separation of all effective terminal signalings as a unified process, a kind of signal separation techniques that adopts a step processing procedure all to separate by the signal of all effective terminals, to reduce MUI(Multi Users Interference, disturb multiple terminals), that is to say, in TD-SCDMA system, can adopt associated detection technique to eliminate interference.
In existing joint detection process, the terminal of including joint-detection scope in is the terminal that link is set up in all and base station, but, in actual applications, likely has deleted and the link of a certain terminal base station, but this terminal is not also deleted this link, now, the terminal of also not deleting this link still sends normal signal to base station, but the existence of this terminal is not known in base station, the terminal of this transmitted signal can not included in joint-detection scope, carry out joint inspection, but, be used as to disturb and process.Now, owing to this terminal not being carried out to joint inspection, therefore, cannot eliminate the intersymbol interference of the signal that terminal that signal that this terminal sends carries out joint inspection to other sends, reduce the demodulation performance of base station, meanwhile, the signal of this terminal is used as to interference signal and processes, the noise calculating can be very large, further can affect power control, reduce the quality of service that other carry out the terminal of joint inspection, as, frequent call drop, frequently go offline.
For example, base station covers Liao Sange community: community 1, community 2, community 3, in each community, there are 8 terminals, just start terminal 1-8 and base station in community 2 and set up wireless link, afterwards, because causing base station, the reason such as of poor quality of eating dishes without rice or wine deletes and the wireless link of terminal 8, and terminal 8 is deleted chain, now, terminal 8 is still given base station transmitted signal, when carrying out joint-detection, base station only carries out joint-detection according to terminal 1-7, demodulate the useful signal of terminal 1-7, owing to not knowing the existence of terminal 8, the signal of terminal 8 can be used as to interference, this disturbs the demodulation performance that can affect terminal 1-7, also can affect the uplink power control of base station.
In sum, in existing associated detecting method, there is the defect that demodulation performance is poor, terminal traffic is second-rate.
Summary of the invention
The embodiment of the present invention provides a kind of associated detecting method and base station, in order to solve the problem that the demodulation performance existing in prior art is poor, customer service is second-rate.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
First aspect, provides a kind of method of joint-detection, comprising:
Receive upward signal, and determine the interference power of community according to described upward signal, and each channel estimation window of described community;
Calculate in described community except distinguishing corresponding channel estimating channel estimation window performance number, that other channel estimation windows difference are corresponding outside window with link setup terminal;
Determine non-link setup terminal in described community according to described interference power, described channel estimation window performance number;
Obtain described link setup terminal, spreading code corresponding to described non-link setup terminal difference, and determine with each terminal in described community and distinguish corresponding signal according to described spreading code.
In conjunction with first aspect, in the possible implementation of the first, after determining each channel estimation window of described community according to described upward signal, calculate in described community except with link setup terminal respectively corresponding channel estimating outside window, other channel estimation windows before corresponding channel estimation window performance number, also comprise respectively:
Obtain the user profile of link setup terminal in described community;
Determine the channel estimation window corresponding with described link setup terminal difference according to described user profile.
In conjunction with first aspect, or the possible implementation of the first of first aspect, in the possible implementation of the second, describedly determine non-link setup terminal in described community according to described interference power, described channel estimation window performance number, specifically comprise:
Terminal non-link setup terminal in described community corresponding to channel power window of channel estimation window performance number of interference power will be greater than.
In conjunction with first aspect, in the third possible implementation, according to described interference power, described channel estimation window performance number in determining described community after non-link setup terminal, obtain described non-link setup terminal respectively before corresponding spreading code, also comprise:
Activate channel estimation window corresponding to described non-link setup terminal difference.
In conjunction with first aspect, in the 4th kind of possible implementation, described in obtain described non-link setup terminal corresponding spreading code respectively, specifically comprise:
For any non-link setup terminal, determine the window numbering of channel estimation window corresponding to this non-link setup terminal;
Obtain the spreading code of numbering snr value maximum in corresponding spreading code with described window.
In conjunction with the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation, described in obtain and described window numbering corresponding spreading code respectively, specifically comprise:
Corresponding relation according to the window numbering of storage with spreading code, obtains the spreading code of numbering snr value maximum in corresponding respectively spreading code with described window; Or
Obtain the spreading code corresponding with described window numbering difference according to historical link setup message.
In conjunction with first aspect, in the 6th kind of possible implementation, described in obtain described link setup terminal corresponding spreading code respectively, specifically comprise:
Determine the spreading code corresponding with described link setup terminal difference according to the user profile of described link setup terminal.
Second aspect, provides a kind of base station, comprising:
Receiving element, for receiving upward signal, and determines the interference power of community according to described upward signal, and each channel estimation window of described community;
Computing unit, for calculating described community except distinguishing corresponding channel estimating channel estimation window performance number, that other channel estimation windows difference are corresponding outside window with link setup terminal;
The first determining unit, for determining the non-link setup terminal in described community according to described interference power, described channel estimation window performance number;
The second determining unit, for obtaining described link setup terminal, spreading code corresponding to described non-link setup terminal difference, and determines with each terminal in described community and distinguishes corresponding signal according to described spreading code.
In conjunction with second aspect, in the possible implementation of the first, described receiving element also for:
Obtain the user profile of link setup terminal in described community;
Determine the channel estimation window corresponding with described link setup terminal difference according to described user profile.
In conjunction with second aspect, or the possible implementation of the first of second aspect, in the possible implementation of the second, described the first determining unit specifically for:
Terminal non-link setup terminal in described community corresponding to channel power window of channel estimation window performance number of interference power will be greater than.
In conjunction with second aspect, in the third possible implementation, described the second determining unit specifically for:
Activate channel estimation window corresponding to described non-link setup terminal difference.
In conjunction with second aspect, in the 4th kind of possible implementation, described the second determining unit specifically for:
For any non-link setup terminal, determine the window numbering of channel estimation window corresponding to this non-link setup terminal;
Obtain the spreading code of numbering snr value maximum in corresponding spreading code with described window.
In conjunction with the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation, described the second determining unit specifically for:
Corresponding relation according to the window numbering of storage with spreading code, obtains the spreading code of numbering snr value maximum in corresponding respectively spreading code with described window; Or
Obtain the spreading code corresponding with described window numbering difference according to historical link setup message.
In conjunction with second aspect, in the 6th kind of possible implementation, described the second determining unit specifically for:
Determine the spreading code corresponding with described link setup terminal difference according to the user profile of described link setup terminal.
Beneficial effect of the present invention is as follows:
In prior art, chain can be deleted by local terminal in base station, the signal that terminal is not deleted the terminal transmission of chain does not carry out joint inspection, process but be used as to disturb, now, cannot eliminate the intersymbol interference of the signal that terminal that signal that this terminal sends carries out joint inspection to other sends, reduce the demodulation performance of base station, meanwhile, also can affect power control, reduce other and carry out the quality of service of the terminal of joint inspection, in the embodiment of the present invention, receive upward signal, and determine the interference power of community according to upward signal, and each channel estimation window of community, in calculation plot, remove with link setup terminal and distinguish corresponding channel estimating channel estimation window performance number, that other channel estimation windows difference are corresponding outside window, determine non-link setup terminal in community according to interference power, channel estimation window performance number, obtain link setup terminal, spreading code corresponding to non-link setup terminal difference, and determine with each terminal in community and distinguish corresponding signal according to spreading code, in this programme, determine base station side and delete chain, end side is not deleted the channel estimation window corresponding to terminal of chain, then, obtain the spreading code that this channel estimation window is corresponding, spreading code corresponding channel estimation window corresponding with the terminal of base station link setup with other this spreading code is all carried out to joint-detection, determine sending the signal that different terminals sends respectively on same time slot, due to this user is carried out to joint inspection, therefore, eliminate the intersymbol interference of the signal that user that signal that this user sends carries out joint inspection to other sends, promote the demodulation performance of base station, simultaneously, the signal of this terminal not being used as to interference signal processes, can not affect power control, promote the quality of service that other carry out the user of joint inspection.
Accompanying drawing explanation
Fig. 1 is the detail flowchart of joint-detection in the embodiment of the present invention;
Fig. 2 is the embodiment of joint-detection in the embodiment of the present invention;
Fig. 3 is the illustrative view of functional configuration of base station in the embodiment of the present invention.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In addition, term " system " and " network " are often used interchangeably in this article herein.Term "and/or" herein, is only a kind of incidence relation of describing affiliated partner, and expression can exist three kinds of relations, and for example, A and/or B, can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, alphabetical "/" herein, generally represents that forward-backward correlation is to liking a kind of relation of "or".
Poor in order to solve the demodulation performance existing in prior art, the problem that customer service is second-rate, in the embodiment of the present invention, a kind of method and device of joint-detection are proposed, in this scheme, determine base station side and delete chain, end side is not deleted the channel estimation window corresponding to terminal of chain, then, obtain not spreading code corresponding to link setup terminal according to this channel estimation window, spreading code corresponding with the terminal of base station link setup with other this spreading code is all carried out to joint-detection, determine sending the signal that different terminals sends respectively on same time slot, due to this user is carried out to joint inspection, therefore, eliminate the intersymbol interference of the signal that user that signal that this user sends carries out joint inspection to other sends, promote the demodulation performance of base station, simultaneously, the signal of this terminal not being used as to interference signal processes, can not affect power control, promote the quality of service that other carry out the user of joint inspection.
Below in conjunction with Figure of description, the preferred embodiment of the present invention is elaborated, be to be understood that, preferred embodiment described herein is only for description and interpretation the present invention, be not intended to limit the present invention, and in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 1, in the embodiment of the present invention, determine that the detailed process of joint-detection is as follows:
Step 100: receive upward signal, and determine the interference power of community according to upward signal, and each channel estimation window of community;
Step 110: remove in calculation plot with link setup terminal and distinguish corresponding channel estimating channel estimation window performance number, that other channel estimation windows difference are corresponding outside window;
Step 120: determine non-link setup terminal in community according to interference power, channel estimation window performance number;
Step 130: obtain link setup terminal, spreading code corresponding to non-link setup terminal difference, and determine with each terminal in community and distinguish corresponding signal according to spreading code.
In the embodiment of the present invention, determine each channel estimation window of community according to upward signal after, in calculation plot except respectively corresponding channel estimating is outside window with link setup terminal, before other channel estimation windows are distinguished corresponding channel estimation window performance number, that is to say, after step 100, before step 110, determine the channel estimation window corresponding with link setup terminal difference, in the embodiment of the present invention, determine with link setup terminal respectively the mode of corresponding channel estimation window have multiple, for example, first obtain the user profile of link setup terminal in community, then, determine the channel estimation window corresponding with link setup terminal difference according to user profile, certainly, in actual applications, determine with link setup terminal respectively corresponding channel estimation window also have other modes, describe in detail no longer one by one at this.
Wherein, while obtaining the user profile of link setup terminal in community, can be according to RNC(Radio Network Controller, radio network controller) user profile of the link setup terminal that sends.
In the embodiment of the present invention, determine that according to interference power, channel estimation window performance number the mode of non-link setup terminal in community has multiple, for example, terminal non-link setup terminal in community corresponding to channel power window of channel estimation window performance number of interference power will be greater than, certainly, an above-mentioned specific embodiment just determining non-link setup terminal in community, in actual applications, determine that in community, non-link setup terminal also has other modes, describe in detail no longer one by one at this.
For example, in the A of community, there are 7 terminals: terminal 1, terminal 2, terminal 7, wherein, terminal 1, terminal 2, terminal 3, terminal 4, terminal 5 Jun Yu community A link setups, terminal 6, each this terminal of leisure of terminal 7 remains with the link setup information with community A, but, has deleted respectively and terminal 6 base station, the link setup information of terminal 7, now, terminal 6, terminal 7 is still normally to base station transmitted signal, base station is being determined after channel estimation window so, first according to the terminal 1 of obtaining, terminal 2, terminal 3, terminal 4, user profile corresponding to terminal 5 difference, determine and terminal 1, terminal 2, terminal 3, terminal 4, channel estimation window corresponding to terminal 5 difference, calculate again the channel estimation window performance number of remaining channel estimation window, wherein there are two channel estimation window performance numbers to be greater than interference power, now, using the terminal corresponding channel estimation window of these two channel estimation window performance numbers respectively as terminal 6, terminal 7.
In the embodiment of the present invention, according to interference power, channel estimation window performance number in determining community after non-link setup terminal, obtain non-link setup terminal respectively before corresponding spreading code, also comprise following operation: activate non-link setup terminal corresponding channel estimation window respectively.
In the embodiment of the present invention, obtain non-link setup terminal respectively the mode of corresponding spreading code have multiple, for example, for any non-link setup terminal, first determine the window numbering of channel estimation window corresponding to this non-link setup terminal, then, obtain the spreading code corresponding with window numbering difference, certainly, in actual applications, obtain non-link setup terminal respectively corresponding spreading code also have other modes, describe in detail no longer one by one at this.
In the embodiment of the present invention, obtain with window numbering respectively the mode of corresponding spreading code have multiplely, for example, the corresponding relation according to the window numbering of storage with spreading code, obtains the spreading code corresponding with window numbering difference; Or, obtain the spreading code corresponding with window numbering difference according to historical link setup message.
In actual applications, a window numbering is likely corresponding with multiple spreading codes, now, selects the spreading code of snr value maximum.
The mapping table of table 1 window numbering and spreading code
| Window numbering | Spreading code |
| 1 | SF1-1SF2-1SF4-1SF8-1SF16-1 |
| 2 | SF8-2SF16-3 |
| 3 | SF4-2SF8-3SF16-5 |
| 4 | SF8-4SF16-7 |
| 5 | SF2-2SF4-3SF8-5SF16-9 |
| 6 | SF8-6SF16-11 |
| 7 | SF4-4SF8-7SF16-13 |
| 8 | SF8-8SF16-15 |
For example, in the A of community, there are 5 terminals: terminal 1, terminal 2, terminal 5, wherein, terminal 1, terminal 2, terminal 3, terminal 4 Jun Yu community A link setups, terminal 5 remains with and the link setup information of community A in this terminal, still, base station has been deleted respectively the link setup information with terminal 5, and now, terminal 5 is still normally to base station transmitted signal, base station is being determined after channel estimation window so, first according to the terminal 1 of obtaining, terminal 2, terminal 3, user profile corresponding to terminal 4 difference, determines and terminal 1, terminal 2, terminal 3, channel estimation window corresponding to terminal 4 difference, calculate again the channel estimation window performance number of remaining channel estimation window, wherein there is a channel estimation window performance number to be greater than interference power, now, using the terminal corresponding channel estimation window of this channel estimation window performance number respectively as terminal 5, if the channel estimation window corresponding with terminal 5 is 4, can determine the spreading code corresponding with terminal 5 according to table 1 is SF8-4, SF16-7, now, selects SF8-4, the spreading code that in SF16-7, snr value is large is as the spreading code of including joint inspection in, as, the snr value of SF8-4 is greater than the snr value of SF16-7, using SF8-4 as the spreading code of including joint inspection in, as, the snr value of SF16-7 is greater than the snr value of SF8-4, using SF16-7 as the spreading code of including joint inspection in.
In the embodiment of the present invention, obtain link setup terminal respectively the mode of corresponding spreading code have multiple, for example, determine the spreading code corresponding with link setup terminal difference according to the user profile of link setup terminal, in actual applications, also have the multiple link setup terminal mode of corresponding spreading code respectively of obtaining, no longer describe in detail at this.
In order to understand better the embodiment of the present invention, below provide concrete application scenarios, for the process of joint-detection, make and describing in further detail, specifically as shown in Figure 2:
In the A of community, there are 7 terminals: terminal 1, terminal 2, terminal 3, terminal 4, terminal 5, terminal 6, terminal 7, wherein, terminal 1, terminal 2, terminal 3, terminal 4, terminal 5 are set up link with base station, terminal 6, the each comfortable local terminal of terminal 7 are not deleted the link setup information with base station, but delete respectively and the link setup information of terminal 6, terminal 7 base station.
Step 200: base station receives terminal 1, terminal 2, terminal 3, terminal 4, user profile corresponding to terminal 5 difference that RNC sends;
Step 210: base station receives upward signal;
Step 220: determine the interference power of community A according to upward signal, and 8 channel estimation windows of community A;
Step 230: base station according to terminal 1, terminal 2, terminal 3, terminal 4, terminal 5 respectively corresponding user profile determine being respectively numbered of corresponding channel estimation window: 2,4,6,7,8, being numbered of other channel power window: 1,3,5;
Step 240: the performance number of the channel power window that is numbered 1,3,5 is calculated in base station;
Step 250: the performance number that the channel power window that is numbered 1,3 is determined in base station is greater than the interference power of community A, using terminal corresponding the channel power window that is numbered 1,3 as terminal 6, terminal 7;
Step 260: according to the corresponding relation of the numbering of channel power window and spreading code, determine and be numbered 1,3 spreading code corresponding to channel power window respectively;
Wherein, be numbered the spreading code of snr value maximum in the spreading code that 1,3 channel power window is corresponding, the namely spreading code of terminal 6, terminal 7;
Step 270: the spreading code that obtains respectively terminal 1, terminal 2, terminal 3, terminal 4, terminal 5 according to user profile;
Step 280: according to all spreading codes that obtain, determine terminal 1, terminal 2, terminal 3, terminal 4, terminal 5, terminal 6, signal corresponding to terminal 7 difference.
As shown in Figure 3, the embodiment of the present invention provides a kind of base station, and this base station comprises: receiving element 300, computing unit 310, the first determining unit 320, and the second determining unit 330, wherein,
Receive single 300 yuan, for receiving upward signal, and determine the interference power of community according to upward signal, and each channel estimation window of community;
The first determining unit 320, for determining the non-link setup terminal in community according to interference power, channel estimation window performance number;
The second determining unit 330, for obtaining link setup terminal, spreading code corresponding to non-link setup terminal difference, and determines with each terminal in community and distinguishes corresponding signal according to spreading code.
In the embodiment of the present invention, receiving element 300 also for:
Obtain the user profile of link setup terminal in community;
Determine the channel estimation window corresponding with link setup terminal difference according to user profile.
In the embodiment of the present invention, the first determining unit 320 specifically for:
Terminal non-link setup terminal in community corresponding to channel power window of channel estimation window performance number of interference power will be greater than.
In the embodiment of the present invention, the second determining unit 330 specifically for:
Activate channel estimation window corresponding to non-link setup terminal difference.
In the embodiment of the present invention, the second determining unit 330 specifically for:
For any non-link setup terminal, determine the window numbering of channel estimation window corresponding to this non-link setup terminal;
Obtain the spreading code corresponding with window numbering difference.
In the embodiment of the present invention, the second determining unit 330 specifically for:
Corresponding relation according to the window numbering of storage with spreading code, obtains the spreading code of numbering snr value maximum in corresponding respectively spreading code with window; Or, obtain the spreading code corresponding with window numbering difference according to historical link setup message.
In the embodiment of the present invention, the second determining unit 330 specifically for:
Determine the spreading code corresponding with link setup terminal difference according to the user profile of link setup terminal.
In sum, in the embodiment of the present invention, receive upward signal, and determine the interference power of the community, terminal place that sends described upward signal according to described upward signal, and each channel estimation window of described community, calculate in described community except distinguishing channel estimation window performance number corresponding to corresponding channel estimating other channel estimation windows difference outside window with the described terminal of setting up link, obtain be greater than described interference power channel estimation window performance number respectively corresponding channel estimation window, with the described terminal of setting up link corresponding channel estimation window respectively, distinguish corresponding spreading code, determine the signal corresponding with the terminal difference of transmitted signal in described community according to described spreading code, in this programme, determine base station side and delete chain, end side is not deleted the channel estimation window corresponding to terminal of chain, then, obtain the spreading code that this channel estimation window is corresponding, spreading code corresponding channel estimation window corresponding with the terminal of base station link setup with other this spreading code is all carried out to joint-detection, determine sending the signal that different terminals sends respectively on same time slot, due to this user is carried out to joint inspection, therefore, eliminate the intersymbol interference of the signal that user that signal that this user sends carries out joint inspection to other sends, promote the demodulation performance of base station, simultaneously, the signal of this terminal not being used as to interference signal processes, can not affect power control, promote the quality of service that other carry out the user of joint inspection.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or multiple flow process and/or a square frame of block diagram or multiple square frames.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if within these of the embodiment of the present invention are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (14)
1. a method for joint-detection, is characterized in that, comprising:
Receive upward signal, and determine the interference power of community according to described upward signal, and each channel estimation window of described community;
Calculate in described community except distinguishing corresponding channel estimating channel estimation window performance number, that other channel estimation windows difference are corresponding outside window with link setup terminal;
Determine non-link setup terminal in described community according to described interference power, described channel estimation window performance number;
Obtain described link setup terminal, spreading code corresponding to described non-link setup terminal difference, and determine with each terminal in described community and distinguish corresponding signal according to described spreading code.
2. the method for claim 1, it is characterized in that, after determining each channel estimation window of described community according to described upward signal, calculate in described community except with link setup terminal respectively corresponding channel estimating outside window, other channel estimation windows before corresponding channel estimation window performance number, also comprise respectively:
Obtain the user profile of link setup terminal in described community;
Determine the channel estimation window corresponding with described link setup terminal difference according to described user profile.
3. method as claimed in claim 1 or 2, is characterized in that, describedly determines non-link setup terminal in described community according to described interference power, described channel estimation window performance number, specifically comprises:
Terminal non-link setup terminal in described community corresponding to channel power window of channel estimation window performance number of interference power will be greater than.
4. the method for claim 1, is characterized in that, according to described interference power, described channel estimation window performance number in determining described community after non-link setup terminal, obtains described non-link setup terminal respectively before corresponding spreading code, also comprises:
Activate channel estimation window corresponding to described non-link setup terminal difference.
5. the method for claim 1, is characterized in that, described in obtain described non-link setup terminal corresponding spreading code respectively, specifically comprise:
For any non-link setup terminal, determine the window numbering of channel estimation window corresponding to this non-link setup terminal;
Obtain the spreading code of numbering snr value maximum in corresponding spreading code with described window.
6. method as claimed in claim 5, is characterized in that, described in obtain and described window numbering corresponding spreading code respectively, specifically comprise:
Corresponding relation according to the window numbering of storage with spreading code, obtains the spreading code of numbering snr value maximum in corresponding respectively spreading code with described window; Or
Obtain the spreading code corresponding with described window numbering difference according to historical link setup message.
7. the method for claim 1, is characterized in that, described in obtain described link setup terminal corresponding spreading code respectively, specifically comprise:
Determine the spreading code corresponding with described link setup terminal difference according to the user profile of described link setup terminal.
8. a base station, is characterized in that, comprising:
Receiving element, for receiving upward signal, and determines the interference power of community according to described upward signal, and each channel estimation window of described community;
Computing unit, for calculating described community except distinguishing corresponding channel estimating channel estimation window performance number, that other channel estimation windows difference are corresponding outside window with link setup terminal;
The first determining unit, for determining the non-link setup terminal in described community according to described interference power, described channel estimation window performance number;
The second determining unit, for obtaining described link setup terminal, spreading code corresponding to described non-link setup terminal difference, and determines with each terminal in described community and distinguishes corresponding signal according to described spreading code.
9. base station as claimed in claim 8, is characterized in that, described receiving element also for:
Obtain the user profile of link setup terminal in described community;
Determine the channel estimation window corresponding with described link setup terminal difference according to described user profile.
10. base station as claimed in claim 8 or 9, is characterized in that, described the first determining unit specifically for:
Terminal non-link setup terminal in described community corresponding to channel power window of channel estimation window performance number of interference power will be greater than.
11. base stations as claimed in claim 8, is characterized in that, described the second determining unit also for:
Activate channel estimation window corresponding to described non-link setup terminal difference.
12. base stations as claimed in claim 8, is characterized in that, described the second determining unit is obtained spreading code corresponding to described non-link setup terminal difference, is specially:
For any non-link setup terminal, determine the window numbering of channel estimation window corresponding to this non-link setup terminal;
Obtain the spreading code of numbering snr value maximum in corresponding spreading code with described window.
13. base stations as claimed in claim 12, is characterized in that, described the second determining unit specifically for:
Corresponding relation according to the window numbering of storage with spreading code, obtains the spreading code of numbering snr value maximum in corresponding respectively spreading code with described window; Or
Obtain the spreading code corresponding with described window numbering difference according to historical link setup message.
14. base stations as claimed in claim 13, is characterized in that, described the second determining unit is obtained spreading code corresponding to described link setup terminal, is specially:
Determine the spreading code corresponding with described link setup terminal difference according to the user profile of described link setup terminal.
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| CN103825627B (en) | 2015-07-29 |
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