CN102884727B - The processing method of filtering mode and device in a kind of communication system - Google Patents
The processing method of filtering mode and device in a kind of communication system Download PDFInfo
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- CN102884727B CN102884727B CN201180000514.1A CN201180000514A CN102884727B CN 102884727 B CN102884727 B CN 102884727B CN 201180000514 A CN201180000514 A CN 201180000514A CN 102884727 B CN102884727 B CN 102884727B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
Abstract
The present invention discloses the processing method of filtering mode in a kind of communication system, and described method comprises: obtain jamming performance parameter; According to described jamming performance parameter determination filtering mode; Be switched to described filtering mode.The present invention also discloses the processing unit of filtering mode in a kind of communication system.Due in the course of the work, according to the disturbed condition switching at runtime filtering mode of reality, the flexibility of filtering mode therefore can be improve, and then improves the receptivity of system.
Description
Technical field
The embodiment of the present invention relates to wireless communication technology field, particularly relates to processing method and the device of filtering mode in a kind of communication system.
Background technology
In the communication system of application VAMOS (VoiceservicesoverAdaptiveMulti-userchannelsononeSlot, based on the speech business of adaptive multiuser multiplexing one time slot) technology, there are two kinds of filtering modes.One uses RRC (RootRaisedCosine, root-raised cosine) Wider (wide) filtering mode of pulse shaping filter, one is Narrow (narrow) filtering mode using LinearGMSK (LinearGaussian-filteredMinimumShiftKeying, linear GMSK (Guassian Minimum Shift Keying)) forming filter.Wherein, Wider filtering mode has good receptivity for VAMOS signal, but adjacent frequency interference is stronger; Narrow filtering mode is poor than Wider filtering mode receptivity, but anti-adjacent frequency interference performance is stronger.In VAMOS communication system, network equipment or terminal be Choose filtering mode statically, carries out work according to the filtering mode selected, and keeps filtering mode constant in the course of the work.
Inventor is realizing, in process of the present invention, finding filtering mode used in the prior art, and its flexibility is poor.
Summary of the invention
Various aspects of the present invention provide processing method and the device of filtering mode in a kind of communication system, thus improve the flexibility of filtering mode.
An aspect of of the present present invention discloses the processing method of filtering mode in a kind of communication system, wherein, comprising: obtain jamming performance parameter; According to described jamming performance parameter determination filtering mode; Be switched to described filtering mode.
Another aspect of the present invention discloses the processing unit of filtering mode in a kind of communication system, wherein, comprising: jamming performance parameter acquisition module, for obtaining jamming performance parameter; Filtering mode determination module, for according to described jamming performance parameter determination filtering mode; Filtering mode handover module, for being switched to described filtering mode.
As can be seen from technique scheme, the flexibility of filtering mode can be improved, and then improve the receptivity of system.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The method flow diagram that Fig. 1 provides for the embodiment of the present invention;
The method flow diagram that Fig. 2 provides for one embodiment of the invention;
The method flow diagram that Fig. 3 provides for another embodiment of the present invention;
The apparatus structure schematic diagram that Fig. 4 provides for another embodiment of the present invention;
The terminal structure schematic diagram that Fig. 5 provides for another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Various technology described herein can be used for various wireless communication system, such as current 2G, 3G communication system and next generation communication system, such as global system for mobile communications (GSM, GlobalSystemforMobilecommunications), code division multiple access (CDMA, CodeDivisionMultipleAccess) system, time division multiple access (TDMA, TimeDivisionMultipleAccess) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, WidebandCodeDivisionMultipleAccessWireless), frequency division multiple access (FDMA, FrequencyDivisionMultipleAddressing) system, OFDM (OFDMA, OrthogonalFrequency-DivisionMultipleAccess) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS (GPRS, GeneralPacketRadioService) system, Long Term Evolution (LTE, LongTermEvolution) system, and other these type of communication systems.
In conjunction with terminal and/or base station and/or base station controller, various aspect is described herein.
Terminal can be wireless terminal also can be catv terminal, and wireless terminal can be point to the equipment that user provides voice and/or data connectivity, has the portable equipment of wireless connecting function or is connected to other treatment facilities of radio modem.Wireless terminal can through wireless access network (such as, RAN, RadioAccessNetwork) communicate with one or more core net, wireless terminal can be mobile terminal, as mobile phone (or being called " honeycomb " phone) and the computer with mobile terminal, such as, can be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device, they and wireless access network exchange language and/or data.Such as, Personal Communications Services (PCS, PersonalCommunicationService) phone, cordless telephone, Session initiation Protocol (SIP) phone, wireless local loop (WLL, WirelessLocalLoop) stand, the equipment such as personal digital assistant (PDA, PersonalDigitalAssistant).Wireless terminal also can be called system, subscri er unit (SubscriberUnit), subscriber station (SubscriberStation), mobile radio station (MobileStation), travelling carriage (Mobile), distant station (RemoteStation), access point (AccessPoint), remote terminal (RemoteTerminal), access terminal (AccessTerminal), user terminal (UserTerminal), user agent (UserAgent), subscriber equipment (UserDevice), or subscriber's installation (UserEquipment).
Base station (such as, access point) can to refer in Access Network the equipment by one or more sector and wireless terminal communications on aloft interface.Base station can be used for the air frame received and IP to divide into groups mutually to change, and as the router between wireless terminal and the remainder of Access Network, wherein the remainder of Access Network can comprise Internet protocol (IP) network.Base station also tunable to the attribute management of air interface.Such as, base station can be the base station (BTS in GSM or CDMA, BaseTransceiverStation), also can be the base station (NodeB) in WCDMA, can also be evolved base station (NodeB or eNB or e-NodeB in LTE, evolutionalNodeB), the present invention does not limit.
Base station controller, can be the base station controller (BSC, basestationcontroller) in GSM or CDMA, also can be the radio network controller (RNC in WCDMA, RadioNetworkController), the present invention does not limit.
In addition, term " system " and " network " are often used interchangeably in this article herein.Term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B.In addition, character "/" herein, general expression forward-backward correlation is to the relation liking a kind of "or".
The embodiment of the present invention provides the defining method of filtering mode in a kind of communication system, and its processing procedure as shown in Figure 1.
S101, acquisition jamming performance parameter.
This jamming performance parameter is used for describing the interference to signal of communication, such as adjacent frequency interference, co-channel interference, signal to noise ratio etc.;
S102, according to above-mentioned jamming performance parameter determination filtering mode.
In signal of communication processing procedure, usual hope increases bandwidth to obtain better receptivity, but due to the restriction of interference, ad infinitum can not expand bandwidth, therefore, need, according to the jamming performance parameter obtained, to determine a kind of filtering mode, under the prerequisite reducing interference, to obtain better receptivity.
S103, be switched to the filtering mode determined.
The method that the embodiment of the present invention provides, due to can according to the disturbed condition of reality, switching at runtime filtering mode, to take into account receptivity and disturbed condition simultaneously, improves the flexibility that filtering mode is determined.
The method that the embodiment of the present invention provides both can be applied on base station, also can be applied in terminal.
When the method that base station applies the invention described above embodiment provides, can be as described below.
The specific implementation of above-mentioned S101 can be: the interference parameter of acquisition community, base station, for example and without limitation, specifically can obtain the adjacent frequency interference of community and the co-channel interference of community; Such as, above-mentioned jamming performance parameter comprises: the adjacent frequency interference of community and the co-channel interference of community.
The specific implementation of above-mentioned S102 can be: when a predetermined condition is satisfied, and base station obtains the jamming performance parameter obtained in predetermined amount of time, and obtains average interference performance parameter in this predetermined amount of time; This average interference performance parameter and predetermined interference threshold compare by base station, and according to comparative result, from least two filtering modes pre-set, select one.Wherein, according to receptivity, the antijamming capability of each filtering mode, and the QoS requirement of reality, determine suitable threshold value and filtering mode selection strategy.Such as, if pre-set plural filtering mode, the quantity of interference threshold can be the quantity-1 of filtering mode, for three kinds of filtering modes, then the quantity of interference threshold is 2 (first threshold < Second Thresholds), its corresponding relation can be: when comparative result is less than first threshold, (antijamming capability is successively descending: the 3rd filtering mode to select the first filtering mode, second filtering mode, first filtering mode, receptivity is successively descending: the first filtering mode, second filtering mode, 3rd filtering mode), when comparative result is between first threshold and Second Threshold, select the second filtering mode, when comparative result is greater than Second Threshold, select the 3rd filtering mode.If S102 periodically performs, then obtain average interference performance parameter specific implementation can but be not limited only to: rise (predetermined condition is the initial time of each cycle) in current period start time, the co-channel interference of acquisition community, base station and the adjacent frequency interference of community, the action obtained lasts till current period cut-off time or a certain moment before, obtains average interference performance parameter in this time period.
When the method that terminal applies the invention described above embodiment provides, can be as described below.
The specific implementation of above-mentioned S101 can be: terminal adopts pre-configured filtering mode to process to received signal respectively, obtains the jamming performance parameter that each filtering mode is corresponding, and this jamming performance parameter comprises signal to noise ratio.
Accordingly, the specific implementation of above-mentioned S102 can be: the filtering mode that terminal selects signal to noise ratio maximum.
In prior art, base station and terminal determination independently filtering mode separately.For Narrow filtering mode and Wider filtering mode, when the filtering mode that both sides determine is different, when disturbing less, selecting one end of Narrow filtering mode possibly cannot receive the useful signal processed outside band, reducing receptivity; When disturbing larger, selecting one end of Wider filtering mode outer for band interference may be carried out filtering process, affecting receptivity equally.In order to address this problem, the method that the embodiment of the present invention provides also comprises: base station sends the information comprising filtering mode determined base station to terminal.
The information comprising filtering mode that terminal is determined to base station transmitting terminal.
Wherein, base station to terminal send comprise the specific implementation of the information of filtering mode can be as described below.
In another embodiment of the present invention, in terminal switching process, base station sends hand off signaling to terminal, and in this hand off signaling, carry the information comprising filtering mode determined base station.
In another embodiment of the present invention, when for terminal assignments channel, base station sends assignment messages to terminal, and in this assignment messages, carry the information comprising filtering mode determined base station.
In another embodiment of the present invention, the information comprising filtering mode determined base station to terminal transmitting system broadcast, and is carried in base station in this system broadcast message.Wherein, carry the information comprising filtering mode in the system broadcast message that base station specifically can send on BCCH channel, in the system broadcast message that also can send on SACCH channel, carry the information comprising filtering mode.When the load capacity in community explodes suddenly, interference increases, and base station can be switched to Narrow filtering mode, and notifies the filtering mode information after each terminal switch by system broadcast message, make each terminal also be switched to Narrow filtering mode, improve antijamming capability.When the load capacity in community explodes suddenly, interference increases, and base station can be switched to Wider filtering mode, and notifies the filtering mode information after each terminal switch by system broadcast message, make each terminal also be switched to Wider filtering mode, improve receptivity.
Such as, terminal receives the information comprising filtering mode that base station is sent; And switch filtering mode according to the information comprising filtering mode received.
Terminal sends to base station the specific implementation comprising the information of filtering mode can be as described below.
In terminal switching process, terminal sends to base station and switches access message, and the information comprising filtering mode that carried terminal is determined in this switching access message;
In another embodiment of the present invention, when for terminal assignments channel, terminal sends appointment and completes message to base station, and completes in this appointment the information comprising filtering mode that carried terminal in message determines.
In another embodiment of the present invention, after terminal to have sent the information comprising filtering mode to base station, base station determines that the specific implementation of filtering mode can be: the information of what receiving terminal was sent comprise filtering mode; And according to the information comprising filtering mode received, and jamming performance parameter, determine filtering mode.
By above-mentioned processing procedure, after base station determines filtering mode, the information comprising filtering mode determined can be sent to terminal, so that filtering mode is switched to consistent with base station side by terminal, thus improve receptivity.If terminal adopts adaptive mode determination filtering mode, the information comprising filtering mode determined can be sent to base station, so that base station is when determining filtering mode, can the filtering mode determined of reference terminal side, and then improve receptivity.
The method that the embodiment of the present invention provides can be applied in any communication system having multiple filtering mode to select, two methods embodiment below for VAMOS system, will be described in detail the specific implementation of the embodiment of the present invention in actual application.
In order to obtain good link performance, base station acquiescence adopts Wider filtering mode.In order to take into account receptivity and antijamming capability, need to grasp jamming performance parameter in real time, to switch filtering mode dynamically.As shown in Figure 2, specific implementation is as follows for corresponding processing procedure.
S201, base station measurement and the adjacent frequency of minute book community interference and co-channel interference.
S202, with 50 measurement report cycles for the cycle, base station calculates the adjacent frequency interference average in this cycle, and co-channel interference average.
Wherein, the time that GSM is parsing measurement result in SACCH decoding is a measurement report cycle, and both every 480ms carried out one-shot measurement report statistics.
S203, base station are within last measurement report cycle in each cycle, average and co-channel interference average and interference threshold-100dbm adjacent frequency is disturbed to compare respectively, if adjacent frequency interference average and co-channel interference average are all less than-100dbm, then still adopt Wider filtering mode (if current filter mode is Narrow filtering mode, then be switched to Wider filtering mode), otherwise, perform S204.
The size that adjacent frequency disturbs average and co-channel interference average is compared in S204, base station, if adjacent frequency interference average is more than or equal to co-channel interference average, then be switched to Narrow filtering mode (if current filter mode is Narrow filtering mode, then still adopt Narrow filtering mode), otherwise, still Wider filtering mode (if current filter mode is Narrow filtering mode, being then switched to Wider filtering mode) is adopted.
In above-mentioned processing procedure, the selection of Cycle Length, and the size of interference threshold can configure according to actual conditions.
In addition, if base station receives the information comprising filtering mode that terminal is sent, the filtering mode of base station can also be determined in conjunction with the information comprising filtering mode received, accordingly, between S203 and S204, S204a can also be comprised: base station is added up the information comprising filtering mode received, if adopt the ratio of the terminal quantity of certain filtering mode and community present terminal total quantity to exceed predetermined value, then this filtering mode base station selected, otherwise, perform S204.
If base station does not receive the information comprising filtering mode that terminal is sent, above-mentioned processing procedure can also comprise S205, the information comprising filtering mode determined is sent to terminal by base station.
In VAMOS system, terminal self adaptation switches the specific implementation of filtering mode as shown in Figure 3, and its processing procedure is as follows.
S301, terminal adopt Narrow filtering mode and Wider filtering mode to carry out channel estimating to received signal respectively, calculate the signal to noise ratio of burst respectively and add up.
Wherein, burst is a burst of eating dishes without rice or wine, and is used for transmitting above-mentioned Received signal strength.
S302, terminal, after cumulative 500 signal to noise ratios, calculate signal to noise ratio average respectively, specifically obtain signal to noise ratio average with the accumulation result of signal to noise ratio divided by 500.
S303, terminal select the maximum filtering mode of signal to noise ratio average to carry out filtering process, and empty cumulative signal to noise ratio corresponding to two kinds of filtering modes respectively.
The all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, and aforesaid program can be stored in a computer read/write memory medium, and this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The embodiment of the present invention additionally provides the processing unit of filtering mode in a kind of communication system, its structure as shown in Figure 4, in described communication system, the processing unit of filtering mode can be base station, also can be terminal, also can be a part for base station or terminal, in described communication system, the processing unit of filtering mode can comprise: jamming performance parameter acquisition module 401, filtering mode determination module 402 and filtering mode handover module 403.
Jamming performance parameter acquisition module 401, for obtaining jamming performance parameter, this jamming performance parameter is used for describing the interference to signal of communication, such as adjacent frequency interference, co-channel interference, signal to noise ratio etc.
Filtering mode determination module 402, for according to above-mentioned jamming performance parameter determination filtering mode.
Filtering mode handover module 403, for being switched to above-mentioned filtering mode.
The device that the embodiment of the present invention provides, due to can according to the disturbed condition of reality, switching at runtime filtering mode, to take into account receptivity and disturbed condition simultaneously, improves the flexibility that filtering mode is determined.
In prior art, base station and terminal determination independently filtering mode separately.For Narrow filtering mode and Wider filtering mode, when the filtering mode that both sides determine is different, when disturbing less, selecting one end of Narrow filtering mode possibly cannot receive the useful signal processed outside band, reducing receptivity; When disturbing larger, selecting one end of Wider filtering mode outer for band interference may be carried out filtering process, affecting receptivity equally.In order to address this problem, the device that the embodiment of the present invention provides also comprises filtering mode and informs module 404, for comprising the information of filtering mode described in sending.
The device that the embodiment of the present invention provides can be arranged on base station, also can be arranged on end side.
If the device that the embodiment of the present invention provides is arranged on base station, and filtering mode is determined in base station, then above-mentioned filtering mode determination module 402, specifically for: when a predetermined condition is satisfied, obtain the jamming performance parameter in predetermined amount of time, and obtain average interference performance parameter in described predetermined amount of time; Described average interference performance parameter and predetermined interference threshold are compared, and according to comparative result, from least two filtering modes pre-set, selects one.Described jamming performance parameter comprises: the adjacent frequency interference of community and co-channel interference.Accordingly, above-mentioned filtering mode informs that the information comprising filtering mode that module 404 sends can be carried in the hand off signaling that described base station sends to described terminal; Or, described in comprise filtering mode information be carried in the assignment messages that described base station sends to described terminal; Or, described in comprise filtering mode information be carried in the system broadcast message that described base station sends to described terminal.
If the device that the embodiment of the present invention provides is arranged on base station, and terminal self adaptation determination filtering mode, then the device that the embodiment of the present invention provides also comprises receiver module 405, for the information comprising filtering mode that receiving terminal is sent.Accordingly, above-mentioned filtering mode determination module 402 specifically for: according to the information comprising filtering mode received, with described jamming performance parameter, determine filtering mode.
If the device that the embodiment of the present invention provides is arranged on base station, and terminal self adaptation determination filtering mode, then above-mentioned jamming performance parameter acquisition module 401 specifically for: adopt pre-configured filtering mode to process to received signal, obtain the jamming performance parameter that each filtering mode is corresponding, described jamming performance parameter comprises signal to noise ratio.Accordingly, above-mentioned filtering mode determination module 402 specifically for: select the maximum filtering mode of signal to noise ratio.
If the device that the embodiment of the present invention provides is arranged on end side, then terminal can adaptively selected filtering mode.With in VAMOS system, the terminal arranging the device that the embodiment of the present invention provides is example, and as shown in Figure 5, specific implementation structure is as follows for the structure of this terminal.
Linear Gaussian filter 501, for carrying out Narrow filtering to input signal;
First training sequence channel estimation module 502, is connected with linear Gaussian filter 501, for processing the output valve of linear Gaussian filter 501, obtains the signal to noise ratio under Narrow filtering mode;
First smoothing module 503, is connected with the first training sequence channel estimation module 502, for the smoothing process of above-mentioned signal to noise ratio;
RRC pulse shaping filter 504, for carrying out Wider filtering to input signal;
Second training sequence channel estimation module 505, is connected with RRC pulse shaping filter 504, for processing the output valve of RRC pulse shaping filter 504, obtains the signal to noise ratio under Wider filtering mode;
Second smoothing module 506, is connected with the second training sequence channel estimation module 505, for the smoothing process of above-mentioned signal to noise ratio;
Relatively judging module 507, is connected with the first smoothing module 503 and the second smoothing module 506, respectively for comparing the output valve of these two modules, and according to comparative result Choose filtering mode;
Filtering mode handover module 508, and compares judging module 507 and is connected, for switching filtering mode according to the selection result comparing judging module 507.
Wherein, the first training sequence channel estimation module 502, first smoothing module 503, second training sequence channel estimation module 505 and the second smoothing module 506 realize the function of above-mentioned parameter acquisition module 401.Relatively judging module 507 realizes the function of above-mentioned filtering mode determination module 402.Filtering mode handover module 508 realizes the function of above-mentioned filtering mode handover module 403.When filtering mode handover module 508 have selected filtering mode, the filter (linear Gaussian filter 501RRC pulse shaping filter 504) corresponding by the filtering mode selected performs filtering operation.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (17)
1. the processing method of filtering mode in communication system, is characterized in that, comprising:
Obtain jamming performance parameter;
According to described jamming performance parameter determination filtering mode;
Be switched to described filtering mode;
Describedly to comprise according to described jamming performance parameter determination filtering mode:
When a predetermined condition is satisfied, base station obtains the jamming performance parameter in predetermined amount of time, and obtains average interference performance parameter in described predetermined amount of time;
Described average interference performance parameter and predetermined interference threshold compare by described base station, and according to comparative result, from at least two filtering modes pre-set, select one, described two filtering modes comprise Narrow filtering mode and Wider filtering mode;
The method also comprises: described base station sends the information comprising filtering mode to terminal.
2. method according to claim 1, is characterized in that, described base station sends to terminal the information comprising filtering mode and comprises:
Described base station sends hand off signaling to described terminal, comprises the information of filtering mode in described hand off signaling described in carrying;
Or,
Described base station sends assignment messages to described terminal, comprises the information of filtering mode in described assignment messages described in carrying;
Or,
Described base station, to described terminal transmitting system broadcast, comprises the information of filtering mode in described system broadcast message described in carrying.
3. method according to claim 1, is characterized in that, describedly comprises according to described jamming performance parameter determination filtering mode:
The information comprising filtering mode that described base station receiving terminal is sent;
Described base station is according to the information comprising filtering mode received, and described jamming performance parameter, determines filtering mode.
4. the method according to claim 1-3 any one, is characterized in that, described jamming performance parameter comprises: the adjacent frequency interference of community and co-channel interference.
5. method according to claim 1, is characterized in that, described acquisition jamming performance parameter comprises:
Terminal adopts pre-configured filtering mode to process to received signal, obtains the jamming performance parameter that each filtering mode is corresponding, and described jamming performance parameter comprises signal to noise ratio.
6. method according to claim 5, describedly comprises according to described jamming performance parameter determination filtering mode:
The filtering mode that described terminal selects signal to noise ratio maximum.
7. the method according to claim 5 or 6, is characterized in that, the method also comprises:
The information of filtering mode is comprised described in described terminal sends to base station.
8. the method according to claim 5 or 6, is characterized in that, the method also comprises:
Described terminal receives the information comprising filtering mode that base station is sent;
Described terminal switches filtering mode according to the described information comprising filtering mode.
9. the processing unit of filtering mode in communication system, is characterized in that, comprising:
Jamming performance parameter acquisition module, for obtaining jamming performance parameter;
Filtering mode determination module, for according to described jamming performance parameter determination filtering mode;
Filtering mode handover module, for being switched to described filtering mode;
Described filtering mode determination module, specifically for: when a predetermined condition is satisfied, obtain the jamming performance parameter in predetermined amount of time, and obtain average interference performance parameter in described predetermined amount of time; Described average interference performance parameter and predetermined interference threshold are compared, and according to comparative result, from least two filtering modes pre-set, select one, described two filtering modes comprise Narrow filtering mode and Wider filtering mode;
This device also comprises filtering mode and informs module, for sending the information comprising filtering mode.
10. device according to claim 9, is characterized in that, described in comprise filtering mode information be carried in the hand off signaling that base station sends to terminal; Or, described in comprise filtering mode information be carried in the assignment messages that base station sends to terminal; Or, described in comprise filtering mode information be carried in the system broadcast message that base station sends to terminal.
11. devices according to claim 9, is characterized in that, described device also comprises: receiver module, for the information comprising filtering mode that receiving terminal is sent;
Described filtering mode determination module specifically for: according to the information comprising filtering mode received, with described jamming performance parameter, determine filtering mode.
12. devices according to claim 9-11 any one, it is characterized in that, described jamming performance parameter comprises: the adjacent frequency interference of community and co-channel interference.
13. devices according to claim 9, it is characterized in that, described jamming performance parameter acquisition module specifically for: when adopting pre-configured filtering mode to process to received signal, obtain the jamming performance parameter that each filtering mode is corresponding, described jamming performance parameter comprises signal to noise ratio.
14. devices according to claim 13, described filtering mode determination module specifically for: select the maximum filtering mode of signal to noise ratio.
15. devices according to claim 13, is characterized in that, described device also comprises:
Linear Gaussian filter, for carrying out narrow Narrow filtering to received signal;
Root-raised cosine RRC pulse shaping filter, for carrying out wide Wider filtering to received signal.
16. devices according to claim 15, is characterized in that, described jamming performance parameter acquisition module specifically comprises:
First training sequence channel estimation module, is connected with described linear Gaussian filter, for processing the output valve of described linear Gaussian filter, obtains the signal to noise ratio under Narrow filtering mode;
First smoothing module, is connected with described first training sequence channel estimation module, for the smoothing process of described signal to noise ratio;
Second training sequence channel estimation module, is connected with described RRC pulse shaping filter, for processing the output valve of described RRC pulse shaping filter, obtains the signal to noise ratio under Wider filtering mode;
Second smoothing module, is connected with described second training sequence channel estimation module, for the smoothing process of described signal to noise ratio.
17. devices according to claim 16, it is characterized in that, described filtering mode determination module is formed by comparing judging module, the described judging module that compares is connected with described first smoothing module and described second smoothing module respectively, for comparing the output valve of described first smoothing module and described second smoothing module, and according to comparative result Choose filtering mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/073996 WO2011124176A2 (en) | 2011-05-12 | 2011-05-12 | Processing method and device for filtering mode in communications system |
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| CN102884727B true CN102884727B (en) | 2016-03-30 |
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|---|---|---|---|---|
| EP1524773A2 (en) * | 2003-10-16 | 2005-04-20 | Broadcom Corporation | System and method to perform adaptive channel filtering on a radio frequency burst in a cellular wireless network |
| CN101242626A (en) * | 2007-02-09 | 2008-08-13 | 捷讯研究有限公司 | Apparatus and method for filtering a receive signal |
| CN101405962A (en) * | 2006-03-17 | 2009-04-08 | 三星电子株式会社 | Apparatus and method for selecting modulation and filter roll-off to meet power and bandwidth requirements |
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| CN101197592B (en) * | 2006-12-07 | 2011-09-14 | 华为技术有限公司 | Far-end cross talk counteracting method and device, signal transmission device and signal processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1524773A2 (en) * | 2003-10-16 | 2005-04-20 | Broadcom Corporation | System and method to perform adaptive channel filtering on a radio frequency burst in a cellular wireless network |
| CN101405962A (en) * | 2006-03-17 | 2009-04-08 | 三星电子株式会社 | Apparatus and method for selecting modulation and filter roll-off to meet power and bandwidth requirements |
| CN101242626A (en) * | 2007-02-09 | 2008-08-13 | 捷讯研究有限公司 | Apparatus and method for filtering a receive signal |
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| CN102884727A (en) | 2013-01-16 |
| WO2011124176A3 (en) | 2012-04-05 |
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