CN104754697A - Wideband code division multi-access (WCDMA) scrambling matching method and device - Google Patents
Wideband code division multi-access (WCDMA) scrambling matching method and device Download PDFInfo
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- CN104754697A CN104754697A CN201310749780.5A CN201310749780A CN104754697A CN 104754697 A CN104754697 A CN 104754697A CN 201310749780 A CN201310749780 A CN 201310749780A CN 104754697 A CN104754697 A CN 104754697A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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Abstract
The invention relates to the communication technology, and discloses a wideband code division multi-address scrambling (WCDMA) matching method and device. The method comprises the steps of performing descrambling and dispreading for single time slot data at the preset times according to the current frame head deviation during processing single time slot data including cell main scrambling; setting the initial value of the current frame head deviation to be 0, and reconfiguring the current frame head deviation after each descrambling and dispreading according to the scrambling deviation generated in the descrambling and dispreading; performing scrambling matching after processing N single time slot data including the cell main scrambling to obtain the frame starting position and the scrambling identification code ID of a cell, wherein N is a preset value. According to the method and the device, the scrambling deviation in the descrambling and dispreading process is continuous, so that the generated scrambling deviation can be directly utilized to configure the current frame head deviation to process the data including the cell main scrambling by descrambling and dispreading, so that the processing time of descrambling and dispreading can be greatly reduced.
Description
Technical field
The present invention relates to the communication technology, particularly Wideband Code Division Multiple Access (WCDMA) scrambler matching technique.
Background technology
At WCDMA(Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) in system, need the scrambler ID(Identification obtaining community, identification code) and frame start position.In Cell searching flow process, by SSC(Secondary Synchronisation Code, auxiliary synchronous) process obtains the frame start position of community, obtained the scrambler ID of community by main scrambler coupling.But in the testing process of adjacent area, there is multiple community, now adopt the flow process of Cell searching, need very large amount of calculation, need the more data of buffer memory simultaneously.When carrying out adjacent area and detecting main scrambler coupling, usually can choose wherein two complete time slots and go to carry out the merging between time slot, then adjudicate.Owing to there is the situation that time slot does not line up, therefore choosing length is that the data of 3 time slots go to carry out descrambling and de-spreading, can ensure to obtain two complete Slot symbol like this.Carry out descrambling and de-spreading by a time slot original position according to the scrambler of 15 frame header deviations, and detect according to the result obtained, to obtain the scrambler ID of frame start position and community.
When carrying out WCDMA adjacent area and detecting main scrambler coupling, need to carry out circulation skew to scrambler time slot original position according to 15 different frame start position, then with these scramblers, descrambling and de-spreading is carried out to data, obtain the correlated results of 15 different frame header deviations, finally again the result of these 15 frame header deviations is adjudicated, find the original position of frame.Scrambling code offset as shown in Figure 1.
Current hardware scrambler uses shift-register sequence to generate, and certain cycles(that needs to operate circulate) after just can obtain the scrambler of particular offset, therefore can bring certain impact in the middle of reality use.
In the conventional method, successively descrambling and de-spreading is carried out to the data that the frame header deviation of scrambler is 0 ~ 14, as shown in Figure 2, data are the data of three time slots to its flow process, then to the time slot original position of each scrambler according to from 0,1,2 ..., 14 order successively descrambling and de-spreading is carried out to data.The frame header deviation of scrambler is as Fig. 3.Shown in, time at every turn to data descrambling and de-spreading, scrambling code offset 1 slot(time slot).
But the cycle carried out required for descrambling and de-spreading according to existing method is larger, need data slot number to be processed be (3+0)+(3+1)+(3+2)+... + (3+14)=150.Because scrambler has skew, when at every turn carrying out descrambling and de-spreading to 3 slot data, the frame header deviation of scrambler is respectively 0,1,2 ..., 14 these scramblers due to hardware of slot(generate and cause).Therefore before carrying out descrambling and de-spreading, need by scrambling code offset 0,1,2 ..., 14 slot, and these bring expense just to descrambling and de-spreading process, because respectively in these slot processing times, although carry out descrambling and de-spreading operation, but the result exported not is expection, but invalid Output rusults.
Summary of the invention
The method that the object of the present invention is to provide a kind of Wideband Code Division Multiple Access (WCDMA) (WCDMA) scrambler to mate and device, make the processing time of descrambling and de-spreading be greatly reduced.
For solving the problems of the technologies described above, the invention provides the method for a kind of Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, comprising following steps:
When processing the data of the single time slot comprising subzone main scramble, according to current frame header deviation, the data of described single time slot are carried out to the descrambling and de-spreading of preset times; Wherein, the initial value of described current frame header deviation is set to 0, and reconfigures described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading;
After N number of data comprising the single time slot of subzone main scramble are processed, carry out scrambler coupling, the scrambler identification code ID of getting frame original position and community; Wherein, N is preset value.
For solving the problems of the technologies described above, present invention also offers the method for a kind of Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, comprising following steps:
The data of M the continuous slot comprising subzone main scramble are handled as follows:
Under the side-play amount of current scrambler time slot original position, carry out descrambling and de-spreading according to the data of current frame header deviation to a described M continuous slot;
Scrambler coupling is carried out to the result of described descrambling and de-spreading; If coupling, then the scrambler identification code ID of getting frame original position and community; If do not mate, then reconfigure described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading, and proceed descrambling and de-spreading according to the data of the current frame header deviation reconfigured to a described M continuous slot, until the number of times of scrambler coupling or described descrambling and de-spreading reaches default number of times;
After described process is carried out to the data of a described M continuous slot, if the number of times of described descrambling and de-spreading reaches default number of times, then upgrade the side-play amount of described current scrambler time slot original position and described current frame header deviation, and continue to carry out described process to the data of a described M continuous slot, until scrambler coupling;
Wherein, the described side-play amount of current scrambler time slot original position and the initial value of described current frame header deviation are 0.
Present invention also offers the device of a kind of Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, comprise: comprise: first arranges module, the first receiver module, the first descrambling and de-spreading module and the first matching module;
Described first arranges module, for arranging the initial value of current frame header deviation; Wherein, the initial value of described current frame header deviation is set to 0;
Described first receiver module, for the data of receiving package containing subzone main scramble, and exports described first descrambling and de-spreading module to; Wherein, described in comprise subzone main scramble packet containing the data of N number of time slot, N is preset value;
Described first descrambling and de-spreading module, for carrying out the descrambling and de-spreading of preset times to the data comprising single time slot in the data of subzone main scramble described in reception according to described current frame header deviation, and reconfigure described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading;
Described first matching module, for carrying out scrambler coupling to N number of descrambling and de-spreading result comprising the data of the single time slot of subzone main scramble, the scrambler identification code ID of getting frame original position and community.
Present invention also offers the device of a kind of Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, comprise: second arranges module, processing module and judge module;
Described second arranges module, for arranging the current side-play amount of scrambler time slot original position and the initial value of current frame header deviation;
Described processing module, for processing the data of M the continuous slot comprising subzone main scramble; Wherein, described processing module comprises the second reception submodule, the second descrambling and de-spreading submodule and the second matched sub-block;
Described second receives submodule, for the data of receiving package containing M continuous slot of subzone main scramble, and exports built-in described second descrambling and de-spreading submodule to;
Described second descrambling and de-spreading submodule, for carrying out descrambling and de-spreading according to the data of current frame header deviation to a described M continuous slot under the side-play amount of described current scrambler time slot original position;
Described second matched sub-block, for carrying out scrambler coupling to the result of described descrambling and de-spreading; If coupling, then the scrambler identification code ID of getting frame original position and community; If do not mate, then reconfigure described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading, and trigger described second descrambling and de-spreading submodule and proceed descrambling and de-spreading according to the data of the current frame header deviation reconfigured to a described M continuous slot, until the number of times of scrambler coupling or described descrambling and de-spreading reaches default number of times;
Described judge module, for judging whether the number of times of described descrambling and de-spreading reaches default number of times; If do not reach default number of times, then trigger described second descrambling and de-spreading submodule; If reach default number of times, then after the side-play amount upgrading described current scrambler time slot original position and described current frame header deviation, trigger described second descrambling and de-spreading submodule, continue to carry out descrambling and de-spreading to the data of a described M continuous slot, until scrambler coupling;
Wherein, the described side-play amount of current scrambler time slot original position and the initial value of described current frame header deviation are 0.
Embodiment of the present invention in terms of existing technologies, is according to being lasting carrying out scrambling code offset in descrambling procedure always, and directly utilizes the frame header deviation that the offset configuration of scrambler is different, carry out descrambling and de-spreading to the data comprising subzone main scramble.Specifically, when processing the data of the single time slot comprising subzone main scramble, according to current frame header deviation, the data of single time slot are carried out to the descrambling and de-spreading of preset times; Wherein, the initial value of current frame header deviation is set to 0, and reconfigures current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading; And after N number of data comprising the single time slot of subzone main scramble are all processed, then carry out scrambler coupling, the scrambler identification code ID of getting frame original position and community; Wherein, N is preset value.Because scrambling code offset is lasting always, whenever according to current frame header deviation (namely, scrambler frame header deviation) to receive data carry out descrambling and de-spreading after, the side-play amount of scrambler can correspondingly increase, that is, the scrambling code offset produced in descrambling and de-spreading process is directly utilized to configure current frame header deviation, until all carry out descrambling and de-spreading to the data received.Like this, the processing time of descrambling and de-spreading is made to be greatly reduced.And when processing the data of M the continuous slot comprising subzone main scramble simultaneously, after descrambling and de-spreading each time, just carry out a scrambler coupling, if coupling, the then scrambler identification code ID of direct getting frame original position and community, proceeds descrambling and de-spreading after noting be used in the side-play amount and current frame header deviation upgrading current current scrambler time slot original position; If do not mate, current frame header deviation is reconfigured again according to the scrambling code offset produced during this descrambling and de-spreading, and proceed descrambling and de-spreading according to the data of current frame header deviation to M continuous slot reconfigured, until the number of times of scrambler coupling or descrambling and de-spreading reaches default number of times; If the number of times of descrambling and de-spreading reaches default number of times, then upgrade the side-play amount of current scrambler time slot original position and current frame header deviation, and continue to process the data of M continuous slot, until scrambler coupling.Like this, the scrambling code offset produced in descrambling and de-spreading process not only directly can be utilized to configure current frame header deviation, the processing time of descrambling and de-spreading is greatly reduced, and, be also applicable to the scene terminated in advance.
In addition, described N equals 3;
Described N number of data comprising the single time slot of subzone main scramble are the data of the data of the first time slot, the data of the second time slot and the 3rd time slot.
The data choosing 3 time slots carry out scrambler coupling, can ensure to obtain the data of two complete time slots, improve the reliability of scrambler coupling.
Accompanying drawing explanation
Fig. 1 is according to main scrambling code offset schematic diagram of the prior art;
Fig. 2 is the method flow diagram according to main scrambler coupling of the prior art;
Fig. 3 is according to scrambling code offset schematic diagram of the prior art;
Fig. 4 is the method flow diagram mated according to the WCDMA scrambler of first embodiment of the invention;
Fig. 5 is according to the scrambling code offset schematic diagram in first embodiment of the invention;
Fig. 6 is the method flow diagram mated according to the WCDMA scrambler of second embodiment of the invention;
Fig. 7 is according to according to the scrambling code offset schematic diagram in second embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.But, persons of ordinary skill in the art may appreciate that in each execution mode of the present invention, proposing many ins and outs to make reader understand the application better.But, even without these ins and outs with based on the many variations of following execution mode and amendment, each claim of the application technical scheme required for protection also can be realized.
First execution mode of the present invention relates to the method for a kind of WCDMA scrambler coupling, and idiographic flow as shown in Figure 4, comprises following steps:
Step 401, arranges the initial value of current frame header deviation.Wherein, the initial value of current frame header deviation is 0.
Step 402, receiving package is containing the data of subzone main scramble.Wherein, the data of reception are N number of data comprising the single time slot of subzone main scramble, and wherein, N is preset value.In the present embodiment, N equals 3; N number of data comprising the single time slot of subzone main scramble are the data slot2 of the data slot0 of the first time slot, the data slot1 of the second time slot and the 3rd time slot.Because when carrying out WCDMA adjacent area and detecting main scrambler coupling, choosing length is that the data of 3 time slots go to carry out descrambling and de-spreading, can ensure to obtain two complete Slot symbol like this.
Owing to receiving only the data of single time slot at every turn, so receive only the data of a time slot in slot0, slot1 and slot2 at every turn, and receive successively by said sequence, that is, first receive the data of slot0, then receive the data of slot1, finally receive the data into slot2.
In step 403, carry out descrambling and de-spreading according to the data of current frame header deviation to the single time slot received, and reconfigure current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading.In the present embodiment, time at every turn to the data de-scrambling despreading received, scrambling code offset 1 time slot, that is, the value of current frame header deviation adds 1 after descrambling and de-spreading.
In step 404, judge whether preset times is reached to the number of times of single time slot descrambling and de-spreading.If do not reach preset times, then return and perform step 402 and 403, until reach preset times to the number of times of single time slot descrambling and de-spreading; If reach preset times, then perform step 405.
When processing the data of the single time slot comprising subzone main scramble, need carry out the descrambling and de-spreading of preset times according to current frame header deviation to the data of single time slot, wherein, preset times is 15.In other words, descrambling and de-spreading is carried out by a time slot original position according to the scrambler of 15 frame header deviations exactly.Because when carrying out WCDMA adjacent area and detecting main scrambler coupling, need to carry out circulation skew to scrambler time slot original position according to 15 different frame start position, then with these scramblers, descrambling and de-spreading is carried out to data, obtain the result of 15 different frame header deviations, to adjudicate the result of these 15 frame header deviations, find the original position of frame.So the preset times of the data of each single time slot being carried out to descrambling and de-spreading is set to 15 times.
According to step 401 to 403, carry out 15 descrambling and de-spreadings respectively to slot0, slot1 and slot2, wherein, scrambling code offset as shown in Figure 5.During each data de-scrambling despreading to single time slot, scrambling code offset 1 slot(time slot).
In step 405, judged whether to process N number of data comprising the single time slot of subzone main scramble.If do not completed, then return after execution step 406 and perform step 401 to 405; If completed, then perform step 407.
In a step 406, the data comprising subzone main scramble are upgraded.That is, if complete 15 descrambling and de-spreadings to the data of slot0, be then the data of slot1 by the Data Update comprising subzone main scramble; If complete 15 descrambling and de-spreadings to the data of slot1, be then the data of slot2 by the Data Update comprising subzone main scramble.
According to the method described above, until complete N number of process comprising the data of the single time slot of subzone main scramble.Namely, the descrambling and de-spreading result of the descrambling and de-spreading result of data of 15 slot0, the descrambling and de-spreading result of the data of 15 slot1 and the data of 15 slot2 is obtained.
In step 407, scrambler coupling is carried out to the result of descrambling and de-spreading, the scrambler identification code ID of getting frame original position and community.Namely, the descrambling and de-spreading result of the data of 15 slot0 obtained, the descrambling and de-spreading result of the data of 15 slot1 are carried out scrambler with the descrambling and de-spreading result of the data of 15 slot2 and mated, the scrambler identification code ID of getting frame original position and community.
Below the data described briefly for single time slot carry out the process of descrambling and de-spreading, are described in detail below with the data instance receiving single slot s lot0:
Due to time initial, frame header deviation is 0, in step 403, after descrambling and de-spreading is carried out to the data of slot0, and scrambling code offset 1 time slot (slot), and to configure current frame header deviation be accordingly 1, and meanwhile, the result of buffer memory descrambling and de-spreading.Then, enter step 404, judge whether the number of times of the data de-scrambling despreading to slot0 reaches preset times; Because the number of times of now descrambling and de-spreading is 1, namely do not reach preset times, then return to step 402 and 403, that is, receive the data of slot0 again, now, current frame header deviation is 1, then to frame header deviation be 1 the data of slot0 carry out descrambling and de-spreading.After again descrambling and de-spreading being carried out to the data of slot0, scrambling code offset 1 time slot, now, current scrambling code offset is 2, and the current frame header deviation configured accordingly is 2, meanwhile, the result of buffer memory descrambling and de-spreading.
By that analogy, after the 15th descrambling and de-spreading is carried out to the data of slot0, the number of times of descrambling and de-spreading reaches preset times, then export the result of the frame header deviation descrambling and de-spreading of the data 0 ~ 14 to slot0, and upgrade the data comprising subzone main scramble, namely, be the data of slot1 by the Data Update comprising subzone main scramble, and return execution step 401 to 403.The process of the data of slot1 being carried out to descrambling and de-spreading is similar with the process of the data of slot0 being carried out to descrambling and de-spreading, does not repeat them here.
In like manner, after carrying out the 15th descrambling and de-spreading to the data of slot1, the number of times of descrambling and de-spreading reaches preset times, then upgrade the data comprising subzone main scramble, namely, be the data of slot2 by the Data Update comprising subzone main scramble, and return execution step 401 and 403.The process of the data of slot2 being carried out to descrambling and de-spreading is also similar with the process of the data of slot0 being carried out to descrambling and de-spreading, does not repeat them here.
So far, descrambling and de-spreading is complete, and buffer memory also outputs the result of whole descrambling and de-spreading.Finally, scrambler coupling is carried out to the result of the whole descrambling and de-spreadings obtained, the scrambler identification code ID of getting frame original position and community.
Carry out data de-scrambling despreading according to the method described above, the Data duplication of each time slot recycles, each namely exportable to a single time slot numerically according to 0 ~ 14 the result of frame header deviation descrambling and de-spreading, as shown in Figure 5, then repeat the data receiving another 2 time slots, the descrambling and de-spreading result of data 15 frame header deviations of 3 time slots all can be exported like this.
In the present embodiment, utilize the scrambling code offset configuration frame header deviation produced during descrambling and de-spreading, carry out descrambling and de-spreading, the number of time slots of data to be processed is needed to be 3*15=45, processing time is about 1/3 of the processing time required for existing method, and the processing time of descrambling and de-spreading is reduced widely.
Compared with prior art, be lasting according to scrambling code offset always, utilize in the skew carrying out scrambler in descrambling procedure, and the frame header deviation different according to the offset configuration of scrambler carries out descrambling and de-spreading.That is, directly utilize the scrambling code offset produced in descrambling procedure to configure current frame header deviation, till all carrying out descrambling and de-spreading to the data received.Like this, the processing time of descrambling and de-spreading is made to be greatly reduced.
Second execution mode of the present invention relates to the method for a kind of WCDMA scrambler coupling.Second execution mode is roughly the same with the first execution mode, and main distinction part is: in the first embodiment, and each data received are the data of single time slot, and the processing time of descrambling and de-spreading is greatly reduced.And in second embodiment of the invention, each data received are the data of M continuous slot, not only make the processing time of descrambling and de-spreading be greatly reduced, and be applicable to the scene terminated in advance, idiographic flow as shown in Figure 6, comprises following steps:
In step 601, the current side-play amount of scrambler time slot original position and the value of current frame header deviation are set.In present embodiment, when arranging the side-play amount of scrambler time slot original position first, be set to 0, the initial value of current frame header deviation is also set to 0.
In step 602, receiving package is containing the data of subzone main scramble.Wherein, the data comprising subzone main scramble are the data of M continuous slot.In the present embodiment, M equals 3.Because when carrying out WCDMA adjacent area and detecting main scrambler coupling, need choose length is that the data of 3 time slots go to carry out descrambling and de-spreading, so choose M to equal 3.That is, the data of M continuous slot are the data of 3 continuous slots: the data slot2 of the data slot0 of the first time slot, the data slot1 of the second time slot and the 3rd time slot; Wherein, the data of the data of the first time slot, the data of the second time slot and the 3rd time slot arrange in order.In other words, each data received are data that slot0, slot1 and slot2 arrange in order.
In step 603, under the side-play amount of current scrambler time slot original position, according to current frame header deviation, descrambling and de-spreading is carried out to the data of M continuous slot.Wherein, scrambling code offset as shown in Figure 7.During each data de-scrambling despreading to single time slot, scrambling code offset 3 slot(time slots).
Specifically, because the side-play amount of the scrambler time slot original position arranged first is 0, current frame header deviation is also 0, to current frame header deviation be the slot0 of 0, the data of slot1 and slot2 carry out descrambling and de-spreading respectively, the descrambling and de-spreading result that current frame header deviation is the slot0 of 0, the data of slot1 and slot2 can be obtained simultaneously, and, be the slot0 of 0 to current frame header deviation, after the data of slot1 and slot2 carry out 1 descrambling and de-spreading, scrambling code offset is 3, and to configure current frame header deviation be 3.
In step 604, judge whether the result of descrambling and de-spreading mates.If coupling, then the scrambler identification code ID of direct getting frame original position and community, and terminate process; If do not mate, then perform step 605.
In step 605, under the side-play amount of current scrambler time slot original position, judge whether the number of times of the data de-scrambling despreading to M continuous slot reaches preset times.After the data of M continuous slot are processed, if do not reach preset times, then return and perform step 602,603 and 604, namely, current frame header deviation is reconfigured according to the scrambling code offset produced during this descrambling and de-spreading, descrambling and de-spreading is proceeded, until the number of times of scrambler coupling or descrambling and de-spreading reaches preset times for according to the data of current frame header deviation to M continuous slot reconfigured; If the number of times of descrambling and de-spreading reaches default number of times, then perform step 606.
In step 606, upgrade the side-play amount of current scrambler time slot original position and current frame header deviation, and return execution step 602,603 and 604, continue to process the data of M continuous slot, until scrambler coupling.
In the present embodiment, because the data received are the data of 3 continuous slots at every turn, and every frame data only comprise the data of 15 time slots, therefore under the side-play amount of same scrambler time slot original position, the preset times of descrambling and de-spreading is 5.
Specifically, when performing step 605 first, under the side-play amount (namely the side-play amount of current scrambler time slot original position is 0) of current scrambler time slot original position, the number of times of descrambling and de-spreading is 1, does not reach preset times 5, then return and perform step 602,603 and 604.When again performing step 602, current frame header deviation is 3, and the data of reception are still the data of slot0, slot1 and slot2.When again performing step 603, namely to current frame header deviation be the slot0 of 3, the data of slot1 and slot2 carry out descrambling and de-spreading respectively, can obtain the descrambling and de-spreading result that current frame header deviation is the slot0 of 3, the data of slot1 and slot2 simultaneously.And, be the slot0 of 3 to current frame header deviation, after the data of slot1 and slot2 carry out descrambling and de-spreading, scrambling code offset is 6, and to configure current frame header deviation be 6.
Then, when again performing step 604, again judge whether the result of descrambling and de-spreading mates.The frame header deviation obtained in the step 603 perform second time is the slot0 of 3, the descrambling and de-spreading result of the data of slot1 and slot2 judges whether scrambler mates, if coupling, then obtains scrambler identification code ID and the frame start position of community, and directly terminates process; If do not mated, then again perform step 605.
By that analogy, after the 5th descrambling and de-spreading is carried out to the data of slot0, slot1 and slot2, and scrambler is not when mating, under the side-play amount (side-play amount of current scrambler time slot original position is 0) of current scrambler time slot original position, the number of times of descrambling and de-spreading reaches preset times 5, then upgrade the side-play amount of scrambler time slot original position and current frame header deviation, the side-play amount of scrambler time slot original position and current frame header deviation are all updated to 1, and perform step 602,603,604 and 605.Be 1 time data to slot0, slot1 and slot2 process of carrying out descrambling and de-spreading and be that descrambling and de-spreading process under 0 is similar in the side-play amount of scrambler time slot original position in the side-play amount of scrambler time slot original position, do not repeat them here.
In like manner, similar in the side-play amount of the scrambler time slot original position descrambling and de-spreading process that to be process that 2 times data to slot0, slot1 and slot2 carry out descrambling and de-spreading also with the side-play amount in scrambler time slot original position be under 0, do not repeat them here.
So far, scrambler coupling is complete.As can be known from Fig. 7, when the side-play amount of scrambler time slot original position is 0, the result that scrambling code offset is respectively the descrambling and de-spreading of 0,3,6,9 and 12 frame header deviations can be obtained; When the side-play amount of scrambler time slot original position is 1, the result that scrambling code offset is respectively the descrambling and de-spreading of 1,4,7,10 and 13 frame header deviations can be obtained; When the side-play amount of scrambler time slot original position is 2, the result that scrambling code offset is respectively the descrambling and de-spreading of 2,5,8,11 and 14 frame header deviations can be obtained.
In the present embodiment, after often carrying out a descrambling and de-spreading, all scrambler coupling is carried out to the descrambling and de-spreading result obtained.Namely when each tap result exports, scrambler coupling can be carried out, if coupling just can exit, the descrambling and de-spreading of data and corresponding reprocessing need not be carried out again, make it possible to the time greatly reducing descrambling and de-spreading, reduce the data volume of buffer memory, and the applicable sight terminated in advance.
In addition, even just obtain the main scrambler mated after terminating all circulation execution, so needing data slot number to be processed is just (3*5+0)+(3*5+1)+(3*5+2)=48, compared with the processing time needing 45 slot with the first execution mode, adding the processing time used when configuring the side-play amount of scrambler time slot original position is the time that 3 slot are corresponding; Compared with the processing time needing 150 slot corresponding with the method for prior art, substantially reduce the time of scrambler configuration, reduce the waste of hardware resource, also increase the efficiency of main scrambler matching treatment simultaneously.
The step of various method divides above, just in order to be described clearly, can merge into a step or splitting some step, being decomposed into multiple step, when realizing as long as comprise identical logical relation, all in the protection range of this patent; To adding inessential amendment in algorithm or in flow process or introducing inessential design, but the core design not changing its algorithm and flow process is all in the protection range of this patent.
Third embodiment of the invention relates to the device of a kind of Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, comprises: first arranges module, the first receiver module, the first descrambling and de-spreading module and the first matching module.
Module is set, for arranging the initial value of current frame header deviation.Wherein, the initial value of current frame header deviation is set to 0.
First receiver module, for the data of receiving package containing subzone main scramble, and exports the first descrambling and de-spreading module to; Wherein, comprise the data of packet containing N number of time slot of subzone main scramble, N is preset value.
First descrambling and de-spreading module, for carrying out the descrambling and de-spreading of preset times to the data comprising single time slot in the data of subzone main scramble received according to current frame header deviation, and reconfigure current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading.
First matching module, for carrying out scrambler coupling to N number of descrambling and de-spreading result comprising the data of the single time slot of subzone main scramble, the scrambler identification code ID of getting frame original position and community.
Be not difficult to find, present embodiment is the system embodiment corresponding with the first execution mode, and present embodiment can be worked in coordination with the first execution mode and be implemented.The relevant technical details mentioned in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the first execution mode.
It is worth mentioning that, each module involved in present embodiment is logic module, and in actual applications, a logical block can be a physical location, also can be a part for a physical location, can also realize with the combination of multiple physical location.In addition, in order to outstanding innovative part of the present invention, the unit not too close with solving technical problem relation proposed by the invention is not introduced in present embodiment, but this does not show the unit that there is not other in present embodiment.
Four embodiment of the invention relates to the device of a kind of WCDMA scrambler coupling.4th execution mode is roughly the same with the 3rd execution mode, and main distinction part is: in the third embodiment, is the device data de-scrambling despreading of single time slot being carried out to scrambler coupling.And in four embodiment of the invention, be the device data de-scrambling despreading of M continuous slot being carried out to scrambler coupling.
In the present embodiment, the device of WCDMA scrambler coupling comprises: second arranges module, processing module and judge module; Wherein, processing module comprises the second reception submodule, the second descrambling and de-spreading submodule and the second matched sub-block.
Second arranges module, for arranging the current side-play amount of scrambler time slot original position and the initial value of current frame header deviation.Wherein, the current side-play amount of scrambler time slot original position and the initial value of current frame header deviation are 0.
Processing module, for processing the data of M the continuous slot comprising subzone main scramble.
Second receiver module, for the data of receiving package containing M continuous slot of subzone main scramble, and exports the second built-in descrambling and de-spreading submodule to.
Second descrambling and de-spreading submodule, for carrying out descrambling and de-spreading according to current frame header deviation to the data of M continuous slot under the side-play amount of current scrambler time slot original position.
Second matching module, for carrying out scrambler coupling to the result of descrambling and de-spreading; If coupling, then the scrambler identification code ID of getting frame original position and community; If do not mate, then reconfigure current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading, and trigger the second descrambling and de-spreading submodule and proceed descrambling and de-spreading according to the data of current frame header deviation to M continuous slot reconfigured, until the number of times of scrambler coupling or descrambling and de-spreading reaches default number of times.
Judge module, for judging whether the number of times of descrambling and de-spreading reaches default number of times; If do not reach default number of times, then trigger the second descrambling and de-spreading submodule; If reach default number of times, then after the side-play amount upgrading current scrambler time slot original position and current frame header deviation, trigger the second descrambling and de-spreading submodule, continue to carry out descrambling and de-spreading to the data of M continuous slot, until scrambler coupling.
Because the second execution mode and present embodiment are mutually corresponding, therefore present embodiment can be worked in coordination with the second execution mode and be implemented.The relevant technical details mentioned in second execution mode is still effective in the present embodiment, and the technique effect that can reach in this second embodiment can realize in the present embodiment too, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the second execution mode.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiments of the invention, and in actual applications, various change can be done to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. a method for Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, is characterized in that, comprise following steps:
When processing the data of the single time slot comprising subzone main scramble, according to current frame header deviation, the data of described single time slot are carried out to the descrambling and de-spreading of preset times; Wherein, the initial value of described current frame header deviation is set to 0, and reconfigures described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading;
After N number of data comprising the single time slot of subzone main scramble are processed, carry out scrambler coupling, the scrambler identification code ID of getting frame original position and community; Wherein, N is preset value.
2. the method for WCDMA scrambler coupling according to claim 1, it is characterized in that, described N equals 3;
Described N number of data comprising the single time slot of subzone main scramble are the data of the data of the first time slot, the data of the second time slot and the 3rd time slot.
3. the method for WCDMA scrambler coupling according to claim 1, it is characterized in that, described preset times is 15.
4. a method for Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, is characterized in that, comprise following steps:
The data of M the continuous slot comprising subzone main scramble are handled as follows:
Under the side-play amount of current scrambler time slot original position, carry out descrambling and de-spreading according to the data of current frame header deviation to a described M continuous slot;
Scrambler coupling is carried out to the result of described descrambling and de-spreading; If coupling, then the scrambler identification code ID of getting frame original position and community; If do not mate, then reconfigure described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading, and proceed descrambling and de-spreading according to the data of the current frame header deviation reconfigured to a described M continuous slot, until the number of times of scrambler coupling or described descrambling and de-spreading reaches default number of times;
After described process is carried out to the data of a described M continuous slot, if the number of times of described descrambling and de-spreading reaches default number of times, then upgrade the side-play amount of described current scrambler time slot original position and described current frame header deviation, and continue to carry out described process to the data of a described M continuous slot, until scrambler coupling;
Wherein, the described side-play amount of current scrambler time slot original position and the initial value of described current frame header deviation are 0.
5. the method for WCDMA scrambler coupling according to claim 4, it is characterized in that, described M equals 3;
The packet of a described M continuous slot contains: the data of the data of the first time slot, the data of the second time slot and the 3rd time slot.
6. the method for WCDMA scrambler coupling according to claim 4, it is characterized in that, described preset times is 5.
7. a device for Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, is characterized in that, comprise: first arranges module, the first receiver module, the first descrambling and de-spreading module and the first matching module;
Described first arranges module, for arranging the initial value of current frame header deviation; Wherein, the initial value of described current frame header deviation is set to 0;
Described first receiver module, for the data of receiving package containing subzone main scramble, and exports described first descrambling and de-spreading module to; Wherein, described in comprise subzone main scramble packet containing the data of N number of time slot, N is preset value;
Described first descrambling and de-spreading module, for carrying out the descrambling and de-spreading of preset times to the data comprising single time slot in the data of subzone main scramble described in reception according to described current frame header deviation, and reconfigure described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading after each descrambling and de-spreading;
Described first matching module, for carrying out scrambler coupling to N number of descrambling and de-spreading result comprising the data of the single time slot of subzone main scramble, the scrambler identification code ID of getting frame original position and community.
8. a device for Wideband Code Division Multiple Access (WCDMA) WCDMA scrambler coupling, is characterized in that, comprise: second arranges module, processing module and judge module;
Described second arranges module, for arranging the current side-play amount of scrambler time slot original position and the initial value of current frame header deviation;
Described processing module, for processing the data of M the continuous slot comprising subzone main scramble; Wherein, described processing module comprises: second receives submodule, the second descrambling and de-spreading submodule and the second matched sub-block;
Described second receives submodule, for the data of receiving package containing M continuous slot of subzone main scramble, and exports built-in described second descrambling and de-spreading submodule to;
Described second descrambling and de-spreading submodule, for carrying out descrambling and de-spreading according to the data of current frame header deviation to a described M continuous slot under the side-play amount of described current scrambler time slot original position;
Described second matched sub-block, for carrying out scrambler coupling to the result of described descrambling and de-spreading; If coupling, then the scrambler identification code ID of getting frame original position and community; If do not mate, then reconfigure described current frame header deviation according to the scrambling code offset produced during this descrambling and de-spreading, and trigger described second descrambling and de-spreading submodule and proceed descrambling and de-spreading according to the data of the current frame header deviation reconfigured to a described M continuous slot, until the number of times of scrambler coupling or described descrambling and de-spreading reaches default number of times;
Described judge module, for judging whether the number of times of described descrambling and de-spreading reaches default number of times; If do not reach default number of times, then trigger described second descrambling and de-spreading submodule; If reach default number of times, then after the side-play amount upgrading described current scrambler time slot original position and described current frame header deviation, trigger described second descrambling and de-spreading submodule, continue to carry out descrambling and de-spreading to the data of a described M continuous slot, until scrambler coupling;
Wherein, the described side-play amount of current scrambler time slot original position and the initial value of described current frame header deviation are 0.
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