CN103580722B - The apparatus and method that the interference of a kind of ascending control channel eliminates - Google Patents
The apparatus and method that the interference of a kind of ascending control channel eliminates Download PDFInfo
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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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
- H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
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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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
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Abstract
The invention discloses the apparatus and method that the interference of a kind of ascending control channel eliminates, described device includes: multipath selects module and ascending control channel interference cancellation module；Described multipath selects module, for selecting energy value to meet the footpath of default high-energy footpath alternative condition as enabling footpath；Described ascending control channel interference cancellation module, for described enable footpath is reconstructed and superposition, and the interference carrying out ascending control channel eliminates。This programme is chosen high-energy footpath as much as possible be reconstructed, utilize hardware reconstruction resource efficiently, promote demodulation gain。
Description
Technical field
The present invention relates to dispatching method and device that the interference of a kind of ascending control channel eliminates, particularly relate to the apparatus and method that the interference of a kind of ascending control channel eliminates。
Background technology
In WCDMA (WCDMA) system, there is certain multi-access inference between user, this interference increases along with the increase of number of users。Corresponding, from accepting to remove signal the base band data of local channel, other channel is just more prone to demodulation out。In actual demodulation process, control channel and be first solved, the multipath fading of analog wireless channel on its demodulation result basis, user controls channel be reconstructed and multi-path combing, restore user and control channel data in baseband signal, then deduct from which, reach interference purpose。Other channel is demodulated by the baseband signal after going interference, it is possible to promote power system capacity。
During real system realizes, re-configurability is more big in theory, can be obtained with power system capacity and promotes more big, but re-configurability is by resource limit such as reconstruct, bandwidth, can not infinitely amplify。Additionally, subscriber signal arrives base station there is mulitpath, and the multipath energy of user differs, energy is more high, the interference of other channel is more big, it is clear that the benefit that reconstruct high-energy footpath is brought is better, this is accomplished by a kind of reasonably scheduling mechanism and limited resources is managed。
At present, numerous patents all relate to the interference of ascending control channel and eliminate, and are mainly reflected in the description to system, and the explanation of principle and performance evaluation are made a concrete analysis of as follows:
Application number be 02111500.1 and Bei'er Co., Ltd., Shanghai that denomination of invention is " partial interference counteracting method of a kind of upstream channel of wideband CDMA system and device " patent in, Special attention will be given to utilizes Dedicated Physical Control Channel (DedicatedPhysicalControlCHannel, it being called for short DPCCH) demodulation result carries out counter modulation and part disturbs elimination, pays close attention to the explanation of principle。
Application number be 200510115916.2 and Huawei Tech Co., Ltd that denomination of invention is " based on controlling the channel method that carries out parallel interference cancellation " patent in, propose a kind of DPCCH channel being reconstructed and the method for interference cancellation, be in harmonious proportion timeslot-based Reconstruction Mechanism it is important that once solve。
Application number be 200580048587.2 and denomination of invention be " pilot tone, expense and Traffic Channel combine interference eliminate " the patent of Qualcomm Inc, propose a kind of system combining interference elimination, eliminate including to the interference controlling channel and Traffic Channel, lay particular emphasis on principle and performance that system hierarchy analysis interference eliminates。
Application number is the patent of 201110111338.0 and company limited of ZTE Corporation that denomination of invention is " a kind of packet-based service channel interference eliminate dispatching method, Apparatus and system ", eliminate mainly for service channel interference, it is proposed that a kind of packet-based dispatching method and device。
How improving the resource utilization in interference cancellation process is the problem needing to solve。
Summary of the invention
The technical problem to be solved in the present invention is to provide the apparatus and method that the interference of a kind of ascending control channel eliminates, and improves the resource utilization in interference cancellation process。
For solving above-mentioned technical problem, the invention provides the device that the interference of a kind of ascending control channel eliminates, described device includes: multipath selects module and ascending control channel interference cancellation module；Described multipath selects module, for selecting energy value to meet the footpath of default high-energy footpath alternative condition as enabling footpath；Described ascending control channel interference cancellation module, for described enable footpath is reconstructed and superposition, and the interference carrying out ascending control channel eliminates。
Further, said apparatus can also have the following characteristics that
Described default high-energy footpath alternative condition includes: choosing the N bar footpath that energy value in each user is maximum, N is positive integer；Choose the energy value footpath more than preset energy thresholding。
Further, said apparatus can also have the following characteristics that
Described ascending control channel interference cancellation module includes scheduling sublayer module and processes submodule；
Described scheduling sublayer module includes timing calculation unit, reconstruction parameter computing unit, task scheduling unit；
Described process submodule includes task data stream processing unit；
Timing computing module, corresponds to, for calculating reconstruct timing and described enable footpath, the user time reconstructing timing；
Described reconstruction parameter computing unit, for calculating the reconstruction parameter in units of symbol of user；
Described task scheduling unit, for scheduling reconstruction task and counteracting task after the reconstitution time resource of symbol being split according to described reconstruct timing, reconstruction task for carrying out enabling reconstruct and the superposition in footpath in units of symbol, and counteracting task is for processing the Interference Cancellation of an antenna in a reconstruct symbol；
Described process submodule, for completing reconstruction task and the Data Stream Processing of the task of counteracting according to the scheduling of described task scheduling unit。
Further, said apparatus can also have the following characteristics that
Described task scheduling unit, is additionally operable to scheduling reconstruction task and enables in user and be reconstructed operation in the system symbol that the symbol head in footpath is corresponding, and the timing base using system time as reconstruct。
Further, said apparatus can also have the following characteristics that
Described ascending control channel includes Dedicated Physical Control Channel and/or High-Speed Dedicated Physical Control Channel。
Further, said apparatus can also have the following characteristics that
Described process submodule, is additionally operable in units of many timeslices and carries out parallel Data Stream Processing。
For solving above-mentioned technical problem, present invention also offers a kind of ascending control channel interference elimination method, including: select energy value to meet the footpath of default high-energy footpath alternative condition as enabling footpath；Described enable footpath is reconstructed and superposition and carry out ascending control channel interference eliminate。
Further, said method can also have the following characteristics that
Described default high-energy footpath alternative condition includes: choosing the N bar footpath that energy value in each user is maximum, N is positive integer；Choose the energy value footpath more than preset energy thresholding。
Further, said method can also have the following characteristics that
Described described enable footpath is reconstructed and superposition and carry out ascending control channel interference eliminate specifically include:
Calculate reconstruct timing and described enable footpath corresponds to reconstruct user time regularly；
Calculate the reconstruction parameter in units of symbol of user；
Scheduling reconstruction task and counteracting task after the reconstitution time resource of symbol being split according to described reconstruct timing, reconstruction task for carrying out enabling reconstruct and the superposition in footpath in units of symbol, and counteracting task is for processing the Interference Cancellation of an antenna in a reconstruct symbol；
Scheduling according to described task scheduling unit completes reconstruction task and the Data Stream Processing of the task of counteracting。
Further, said method can also have the following characteristics that
Scheduling reconstruction task enables in the system symbol that the symbol head in footpath is corresponding in user and is reconstructed operation, the timing base using system time as reconstruct。
This programme is chosen high-energy footpath as much as possible be reconstructed, utilize hardware reconstruction resource efficiently, promote demodulation gain；With system symbol (256chip) for unit, adopt the parallel processing manner of many timeslices to be reconstructed and offset, reduce buffer memory expense and the wait time delay of other channel demodulation；Timing base with system time for reconstruct, adopts the mode of Timing driver user path is reconstructed and offsets, and system robustness is good；Minimum unit with multipath for reconstruct, utilizes reconstruct resource to greatest extent, makes the restriction of re-configurability be only that multipath number simultaneously, unrelated with community number, antenna number, number of users。
Accompanying drawing explanation
Fig. 1 is ascending control channel interference elimination method flow chart；
Fig. 2 is that control channel interference eliminates the timing diagram starting reconstruct；
Fig. 3 is that control channel interference eliminates system and user path timing relation figure；
Fig. 4 is the structure drawing of device of ascending control channel interference elimination method。
Detailed description of the invention
In the present invention, high-energy footpath is selected to be reconstructed, utilize hardware reconstruction resource to greatest extent, complete to control channel DPCCH and High-Speed Dedicated Physical Control Channel (HighSpeed-DedicatedPhysicalControlCHannel, it is called for short HS-DPCCH) interference elimination function, improve power system capacity, be currently mainly applied in 3G (Third Generation) Moblie UMTS system。
As it is shown in figure 1, ascending control channel interference elimination method includes: select energy value to meet the footpath of default high-energy footpath alternative condition as enabling footpath；Described enable footpath is reconstructed and superposition and carry out ascending control channel interference eliminate。
Preset high-energy footpath alternative condition to include: choosing the N bar footpath that energy value in each user is maximum, N is positive integer；Choose the energy value footpath more than preset energy thresholding。
The process selecting high flux footpath includes: receive demodulation parameter, including channel estimation parameter, frequency deviation compensating parameter, multipath timing information, scrambling code information, hard decision result, and the energy value according to the channel estimation calculation therein all multipaths of all users, user's multipath is selected, under the premise less than hardware reconstruction ability, dispatch maximum high-energy footpaths to be reconstructed, for instance the N bar footpath therefrom choosing energy maximum is reconstructed as far as possible。N is necessarily less than the integer value corresponding equal to the re-configurability of actual hardware。
For whether every footpath of each user is the information enabling footpath, it is designated as static parameter, the update cycle of static parameter can be a 10ms frame, can also be that a time slot is (in UMTS system, one 10ms frame includes 15 time slots, and a time slot includes 10 symbols), it might even be possible to consistent with basic time unit's (symbol) of reconstruct, static parameter updates more fast, and energy balane is more high with the performance requirement selecting footpath。
In this programme, described enable footpath is reconstructed and superposition and carry out ascending control channel interference eliminate specifically include: calculate reconstruct timing and described enable footpath correspond to reconstruct timing user time；
Calculate the reconstruction parameter in units of symbol of user；
Scheduling reconstruction task and counteracting task after the reconstitution time resource of symbol being split according to described reconstruct timing, reconstruction task for carrying out enabling reconstruct and the superposition in footpath in units of symbol, and counteracting task is for processing the Interference Cancellation of an antenna in a reconstruct symbol；Concrete, at each system symbol head, the system symbol of reconstruct is calculated according to reconstruct start-up study, system time, the user symbol of every corresponding reconstruct multipath is calculated according to multi-path information, obtain and calculate the reconstruction parameter based on user symbol, in units of footpath, dispatch reconstruction task, in units of antenna, dispatch counteracting task。
Scheduling according to described task scheduling unit completes reconstruction task and the Data Stream Processing of the task of counteracting。Concrete, in units of symbol, complete reconstruct and the Data Stream Processing of the task of counteracting。Reconstruction task completes the reduction of data in one symbol of subscriber channel, and counteracting task completes real-time antenna data and the phase reducing of reconstruct data in one symbol of a certain antenna, obtains removing the data of DPCCH and HS-DPCCH interference。Go interference time delay uplink antenna data basis on other channel is demodulated, demodulation gain can be promoted。
Wherein, scheduling reconstruction task enables in the system symbol that the symbol head in footpath is corresponding in user and is reconstructed operation, the timing base using system time as reconstruct。
Below correlation step is described in detail。
With system time for benchmark。
At each system symbol head, start-up study according to system reconfiguration requires and present system time, calculate the timing of reconstruct, multi-path information and static parameter further according to user, calculate the user time needing reconstructing user footpath, obtain the channel estimating of correspondence, frequency deviation compensation, scrambling code information, hard decision result, and these parameters are calculated character boundary, finally offset according to timer-triggered scheduler and reconstruct subtask。Owing to the spreading factor of DPCCH and HSDPCCH the two channel is all 256, therefore it is scheduling with system symbol (256chip) for benchmark, the all reconstruct every time processed in a symbol enable user path, all user paths in the next symbol of reprocessing。
Reconstruct timing calculates
At each system symbol head, according to reconstruct start-up study, which system symbol what calculate the interior reconstruct of current system symbol time is。Spended time is needed owing to all reconstruct footpaths parameter calculates character boundary, also need to calculate the time that start-up parameter reads and calculates herein, can reserving regular hour surplus, such as a symbol time, the parameter completing all enable user paths in this symbol time calculates。Differing owing to DPCCH and HS-DPCCH demodulates the time, the reconstruct startup time is also different, it is necessary to being respectively calculated, concrete sequential relationship is shown in Fig. 2。Wherein, DELAY0 is the wait time delay obtaining DPCCH channel estimating, demodulation module determine；DELAY1 is that DPCCH reconstructs start-up study；DELAY2 obtains HS-DPCCH hard decision result to wait time delay, demodulation module determine；DELAY3 is that HS-DPCCH reconstructs start-up study, and the magnitude relationship of above-mentioned several time delays is: DELAY3 > DELAY2；DELAY1 > DELAY0；DELAY2 > DELAY0。
Static parameter replacement analysis
Static parameter is to be updated with certain cycle, for this reason, it may be necessary to static parameter is analyzed in real time, it is ensured that in each update cycle, reconstruct is the user path that energy is the highest, analyzes result and calculates and reconstruction task scheduling for follow-up user's timing。
User's timing calculates
Analyze the reconstruct timing of result and current system according to static parameter, calculate all enable user paths and correspond to the user time of current reconstruct timing。In UMTS, there is certain skew in user time and system time, the principle that user time calculates is, which system symbol the symbol head of user's multipath drops on, then this user's multipath just reconstructs in which system symbol, concrete sequential relationship is shown in that in Fig. 3, figure, namely the user symbol of numbering identical with system symbol reconstructs in this system symbol。
Reconstruction parameter calculates
According to frequency deviation parameter, scrambling code information, multipath parameter and channel estimation parameter that all multipath reconstruct of reconstruct and user's timing acquisition needs。Restructuring procedure carries out with sign bit unit, but demodulation parameter is not entirely and provides in units of symbol, this frequency deviation compensation being accomplished by using required for being reconstructed by multipath, scrambler sequence, channel estimating, hard decision result, the parameter conversion such as multipath are in symbol。
Reconstruct and counteracting task scheduling
According to reconstruct timing result of calculation, the reconstitution time resource of each symbol being split, scheduling reconstructs and the task of counteracting。Counteracting task is distinguished with sky wire size, processes the Interference Cancellation of a certain antenna in a reconstruct symbol respectively。The reconstruct subtask being split as with footpath for unit is scheduling, and ensures gapless switching between each subtask so that hardware reconstruction resource utilization is maximum simultaneously。Calculated for previous step reconstruction parameter is issued by reconstruction task simultaneously, and Data Stream Processing utilizes these parameters to restore multipath data mode in baseband signal。Offset and reconstruction task can carry out in serial, it is also possible to parallel processing, depend on that whether cache resources is sufficient。If serial process, it is fairly simple that counteracting operation carries out process at character boundary, it is possible at symbol head, it is also possible at symbol tail。Carry out at symbol head if offset, then counteracting is reconstruct result out in a upper symbol, and what otherwise offset is the reconstruction result in current sign, and retain time enough must to counteracting。When only processing DPCCH channel disturbance in this programme, it is possible to from system symbol, scheduling DPCCH offsets task, then dispatches the DPCCH reconstruction task in all enable footpaths。When only processing HS-DPCCH channel disturbance in this programme, it is possible to from system symbol, scheduling HS-DPCCH offsets task, then dispatches the HS-DPCCH reconstruction task in all enable footpaths。When processing DPCCH channel and HS-DPCCH channel disturbance in this programme, from system symbol, scheduling DPCCH offsets task and HS-DPCCH offsets task, then dispatches DPCCH reconstruction task and the HS-DPCCH reconstruction task in all enable footpaths。
The Data Stream Processing of task
Completing to offset and reconstruct the Data Stream Processing of subtask under the guidance of scheduling, its processing speed is directly connected to re-configurability。Adopt parallel processing manner to accelerate reconstruction progress, between re-configurability and hardware resource, carry out balance select, the parallel processing manner such as 8/16/32/64/96chip can be adopted。Re-configurability is also depending on the work clock of system。Restructuring procedure includes modulation, IQ mapping, spread spectrum, scrambling, power weightings, filtering, obtain the reconstruction result in one symbol of a certain bar multipath, multi-path combing is carried out further according to the multi-path information in reconstruction parameter, reconstruction result being added on the correspondence position of respective antenna data, accumulation result is buffered in inner buffer according to sky wire size and system time。Offset subtask and needed removal DPCCH or the HS-DPCCH interference operation of wire size some day, in real-time antenna data, namely deduct reconstruct accumulation result in all footpaths in a symbol。
Carry out illustrating the calculation of re-configurability for counteracting and reconstruct serial below: assume that system supports the Interference Cancellation of 12 antennas, owing to the reconstruct of DPCCH and HS-DPCCH starts time difference, two channel reconstruction results need to offset respectively, it is necessary to dispatch 24 and offset task。Assuming that whole system is operated in 64chip (in UMTS, 1chip clock rate is equivalent to 3.84MHz) under clock zone, data stream adopts 32chip parallel processing manner, the cycle consumed required for snapping to system time plus multipath more, the reconstruct of one symbol of user path needs 9cycle, so the re-configurability of system is calculated as with multipath number: 64*32* (8/9)-24=1796, say, that 1796 user's multipaths can be selected at most to be reconstructed。
As shown in Figure 4, the device that ascending control channel interference eliminates includes multipath and selects module and ascending control channel interference cancellation module；Described multipath selects module, for selecting energy value to meet the footpath of default high-energy footpath alternative condition as enabling footpath；Described ascending control channel interference cancellation module, for described enable footpath is reconstructed and superposition, and the interference carrying out ascending control channel eliminates。
Wherein, preset high-energy footpath alternative condition to include: choosing the N bar footpath that energy value in each user is maximum, N is positive integer；Choose the energy value footpath more than preset energy thresholding。
This device may also include demodulation parameter buffer unit, be used for receiving and preserving demodulation parameter；Multipath selects module to select energy value to meet the footpath of default high-energy footpath alternative condition according to the demodulation parameter in demodulation parameter buffer unit, or multipath selects module to directly receive demodulation parameter。
Ascending control channel interference cancellation module includes scheduling sublayer module and processes submodule；Scheduling sublayer module includes static parameter analytic unit, timing calculation unit, reconstruction parameter computing unit, task scheduling unit；Process submodule and include task data stream processing unit。
Static parameter analytic unit, for preserving the enable footpath information of also real-time update user。Or this device may not include static parameter analytic unit, multipath selects module directly to interact with timing computing module and reconstruction parameter computing unit。
Timing computing module, corresponds to, for calculating reconstruct timing and described enable footpath, the user time reconstructing timing；
Reconstruction parameter computing unit, for calculating the reconstruction parameter in units of symbol of user；
Described task scheduling unit, for scheduling reconstruction task and counteracting task after the reconstitution time resource of symbol being split according to described reconstruct timing, reconstruction task for carrying out enabling reconstruct and the superposition in footpath in units of symbol, and counteracting task is for processing the Interference Cancellation of an antenna in a reconstruct symbol；Concrete, scheduling reconstruction task enables in the system symbol that the symbol head in footpath is corresponding in user and is reconstructed operation the timing base using system time as reconstruct。
Described process submodule, for completing reconstruction task and the Data Stream Processing of the task of counteracting according to the scheduling of described task scheduling unit；Parallel Data Stream Processing is carried out in units of many timeslices。
This device can also include initial configuration unit for preserving high-rise configuration information, such as reconstruct start-up study information；Antenna data buffer unit can also be included for preserving real-time uplink antenna data and removing the time delay antenna data of ascending control channel interference。
Described ascending control channel includes Dedicated Physical Control Channel and/or High-Speed Dedicated Physical Control Channel。
Specific embodiment:
Following precondition is set:
DPCCH start-up study is 28 symbols, and HS-DPCCH start-up study is 58 symbols, and DPCCH task processing priority is higher than HS-DPCCH task。
Carry out Interference Cancellation at symbol head, support 12 antennas。
Reconstruct data stream is according to 32chip parallel processing, and system is operated under 64chip clock zone, and re-configurability is 1796 footpaths。
Concrete executive mode is as follows:
Multipath selects unit to calculate all user path energy according to channel estimation parameter, therefrom select high-energy footpath to be reconstructed, assume to select each 8 footpaths of user 0～99 to carry out DPCCH and HS-DPCCH reconstruct, namely two channels are respectively dispatched 800 footpaths and are reconstructed, and above-mentioned selection information are configured down in static parameter mode。
Static parameter analytic unit is handed down to timing calculation unit and parameter calculation unit by analyzing the real-time multipath enable information obtained。
Timing calculation unit calculates DPCCH and HS-DPCCH reconstitution time at each character boundary, and the multipath timing information according to reconstruct enable multipath calculates every user time reconstructing enable multipath。Owing to DPCCH and HS-DPCCH reconstitution time is different, corresponding user time is also different。
Parameter calculation unit completes reconstruct and enables the reconstruction parameter acquisition of multipath and calculate。For DPCCH channel, postpone 27 symbols in demodulation parameter buffer memory, read the frequency deviation compensation of all reconstructing user, channel estimating, scrambling code information and hard decision result, and these parameters are calculated in the user symbol of reconstruct。For HS-DPCCH channel, time delay 57 symbol reads reconstruction parameter in demodulation parameter buffer memory and is converted in reconstruct symbol。
Task scheduling unit completes reconstruct and offsets task scheduling。For DPCCH channel, dispatching the counteracting task of the system symbol before 29 symbols, the interference completing 12 antenna DPCCH reconstruction result in this symbol eliminates, and next in the system symbol before scheduling 28 symbols, 800 footpaths are reconstructed and add up；For HS-DPCCH channel, dispatching the counteracting task of the system symbol before 59 symbols, the interference completing 12 antenna HS-DPCCH reconstruction result in this symbol eliminates, and next in the system symbol before scheduling 58 symbols, 800 footpaths are reconstructed and add up。
Task data stream processing unit completes the generation of reconstruct data and offsets operation。From the time, for DPCCH channel, after any system symbol postpones 29 symbols, the DPCCH that can obtain all reconstruct multipaths under this symbol reconstructs accumulation result, time delay 29 symbol more (execution offsetting task needs spended time), the DPCCH that goes that can obtain this system symbol disturbs result, is stored in antenna data buffer memory；For HS-DPCCH channel, after any system symbol postpones 59 symbols, the HS-DPCCH that can obtain all reconstruct multipaths under this system symbol reconstructs accumulation result, and time delay 59 symbol is more, DPCCH and the HS-DPCCH that goes obtaining this system symbol disturbs result, is stored in antenna data buffer unit。
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually。
Certainly; the present invention also can have other various embodiments; when without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and deformation according to the present invention, but these change accordingly and deformation all should belong to the scope of the claims appended by the present invention。
One of ordinary skill in the art will appreciate that all or part of step in said method can be carried out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, such as read only memory, disk or CD etc.。Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuit to realize。Correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes。The present invention is not restricted to the combination of the hardware and software of any particular form。
Claims (9)
1. the device that an ascending control channel interference eliminates, it is characterised in that
Described device includes: multipath selects module and ascending control channel interference cancellation module；
Described multipath selects module, for selecting energy value to meet the footpath of default high-energy footpath alternative condition as enabling footpath；
Described ascending control channel interference cancellation module, for described enable footpath is reconstructed and superposition, and the interference carrying out ascending control channel eliminates；
Described ascending control channel interference cancellation module includes scheduling sublayer module and processes submodule；
Described scheduling sublayer module includes timing calculation unit, reconstruction parameter computing unit, task scheduling unit；
Timing calculation unit, corresponds to reconstruct user time regularly for calculating reconstruct timing and described enable footpath；
Described task scheduling unit, for scheduling reconstruction task and counteracting task after the reconstitution time resource of symbol being split according to described reconstruct timing, reconstruction task for carrying out enabling reconstruct and the superposition in footpath in units of symbol, and counteracting task is for processing the Interference Cancellation of an antenna in a reconstruct symbol；
Described process submodule, for completing reconstruction task and the Data Stream Processing of the task of counteracting according to the scheduling of described task scheduling unit。
2. device as claimed in claim 1, it is characterised in that
Described default high-energy footpath alternative condition includes: choosing the N bar footpath that energy value in each user is maximum, N is positive integer；Choose the energy value footpath more than preset energy thresholding。
3. device as claimed in claim 1, it is characterised in that
Described scheduling sublayer module also includes reconstruction parameter computing unit；
Described process submodule includes task data stream processing unit。
4. device as claimed in claim 1, it is characterised in that
Described task scheduling unit, is additionally operable to scheduling reconstruction task and enables in user and be reconstructed operation in the system symbol that the symbol head in footpath is corresponding, and the timing base using system time as reconstruct。
5. device as claimed in claim 1, it is characterised in that
Described ascending control channel includes Dedicated Physical Control Channel and/or High-Speed Dedicated Physical Control Channel。
6. device as claimed in claim 1, it is characterised in that
Described process submodule, is additionally operable in units of many timeslices and carries out parallel Data Stream Processing。
7. an ascending control channel interference elimination method, it is characterised in that
Energy value is selected to meet the footpath of default high-energy footpath alternative condition as enabling footpath；
Described enable footpath is reconstructed and superposition and carry out ascending control channel interference eliminate；
Described described enable footpath is reconstructed and superposition and carry out ascending control channel interference eliminate specifically include:
Calculate reconstruct timing and described enable footpath corresponds to reconstruct user time regularly；
Scheduling reconstruction task and counteracting task after the reconstitution time resource of symbol being split according to described reconstruct timing, reconstruction task for carrying out enabling reconstruct and the superposition in footpath in units of symbol, and counteracting task is for processing the Interference Cancellation of an antenna in a reconstruct symbol；
Scheduling according to described task scheduling unit completes reconstruction task and the Data Stream Processing of the task of counteracting。
8. method as claimed in claim 7, it is characterised in that
Described default high-energy footpath alternative condition includes: choosing the N bar footpath that energy value in each user is maximum, N is positive integer；Choose the energy value footpath more than preset energy thresholding。
9. method as claimed in claim 7, it is characterised in that
Scheduling reconstruction task enables in the system symbol that the symbol head in footpath is corresponding in user and is reconstructed operation, the timing base using system time as reconstruct。
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| PCT/CN2013/080117 WO2014015815A1 (en) | 2012-07-25 | 2013-07-25 | Device and method for eliminating interference on uplink control channel |
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Patent Citations (4)
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| CN1949682A (en) * | 2006-11-03 | 2007-04-18 | 凯明信息科技股份有限公司 | Method and apparatus for cancellation eliminating common-frequency cell signal interference based on serial interference |
| CN1949684A (en) * | 2006-11-03 | 2007-04-18 | 凯明信息科技股份有限公司 | Method and apparatus for cancellation eliminating common-frequency cell signal inferference based on parallel interference |
| CN102163990A (en) * | 2010-02-22 | 2011-08-24 | 中兴通讯股份有限公司 | Multi-user interference elimination method and base station |
| CN102281215A (en) * | 2010-06-11 | 2011-12-14 | 中兴通讯股份有限公司 | Channel estimating method and device based on multi-cell parallel frequency domain disturbance elimination |
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| WO2014015815A1 (en) | 2014-01-30 |
| CN103580722A (en) | 2014-02-12 |
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