CN1702981A - A signal combining method and apparatus - Google Patents
A signal combining method and apparatus Download PDFInfo
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- CN1702981A CN1702981A CN 200410038376 CN200410038376A CN1702981A CN 1702981 A CN1702981 A CN 1702981A CN 200410038376 CN200410038376 CN 200410038376 CN 200410038376 A CN200410038376 A CN 200410038376A CN 1702981 A CN1702981 A CN 1702981A
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Abstract
This invention discloses one signal merging method, which comprises the following steps: after each signal merging and the relative signal clearing, inspecting the time gap signal on the same one integration linkage merging, wherein, if the signal is zero or isn't zero, then clearing the relative signals fulfilled; if there exit signals zero and non zero, then clearing the requiring signals of non zero signal and keeping the zero signals. The invention also discloses one merging requires and generation device.
Description
Technical field
The present invention relates to the signal processing technology of mobile communication, be specifically related to a kind of signal combining method and device.
Background technology
In Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, when travelling carriage (MS) sends signal by reverse dedicated channel in the sector, the sector can be with the signal of this travelling carriage of receiving by Radio Link (RL, Radio Link) sends to its affiliated base station, in mobile communication system, Radio Link can abbreviate link as.Generally speaking, the MS region is only covered by the signal of a sector, and at this moment, the signal of MS only sends to the base station by a wireless links, promptly has only a sector to base station transmit signals.But, when MS is positioned at the edge of a sector signals overlay area, just might be covered by the signal of other adjacent sectors simultaneously.At this moment, these sectors all can receive the signal that MS sends, and afterwards, the signal of this MS that each sector will be received separately again sends to the base station respectively.At this moment, the signal of MS just sends to the base station by multi wireless links, several sectors is promptly arranged to base station transmit signals, the multi wireless links here is generically and collectively referred to as a Radio Link collection (RLS, Radio Link Set), in mobile communication system, the Radio Link collection can abbreviate link set as.
When the signal of same MS is not by single link, but pass through a link set when base station transmits, the base station will merge the signal that belongs to all links of same link set, be that the base station will merge the signal that belongs to same MS from each sector, in order to improve receiving gain and receptivity.Because the signal of the same MS that each sector receives does not have other differences except through the space path difference, so when carrying out the signal merging, just the signal of the same MS that each sector is received simply adds up.The sort signal union operation is called softer merging (SC, Softer Combination).
At present, softer merging is that unit carries out with the time slot, is about to the signal of the same time slot of same frame merging in all link signals in the same link set.Simultaneously, to the softer merging of signal of MS the time, the data of the data of Dedicated Physical Control Channel (DPCCH) and Dedicated Physical Data Channel (DPDCH) are processed separately, and the DPCCH of the WCDMA reverse dedicated channel of using and each frame of DPDCH are formed by 15 time slots now.
As shown in Figure 1, the softer merging module 100 of widespread usage mainly comprises request queue unit 102, link query unit 103, joint account unit 104, state machine 105 and parameter configuration unit 106 at present, and softer merging module 100 links to each other with prime demodulation module 101.
In actual applications, 101 pairs of all signals from all sectors of prime demodulation module carry out demodulation, and promptly the signal to all links carries out demodulation.After prime demodulation module 101 is finished the signal demodulation of a time slot of certain link at every turn, just the restituted signal of finishing with this this time slot of link stores, and send a signal to softer merging module 100, the signal that shows this this time slot of link has been finished demodulation, and this signal can be regarded as the request signal of the softer merging of this time slot application of this link.Meanwhile, request queue unit 102 all stores prime demodulation module 101 to each request signal that softer merging module 100 sends, the moment that each request signal is requested queued units 102 storages can be considered as the moment that this request signal arrives request queue unit 102, is called for short due in.
Carry out smoothly for the softer merging of assurance, the base station issues relevant parameter to softer merging module 100 at any time, belongs to which different link set respectively so that parameter configuration unit 106 is known signal to be processed, and which link is each link set specifically comprise.When the request signal of all links that belong to same link set all has been stored in the request queue unit 102 and state machine 105 when being in idle condition, the softer merging of this link set just starts, and this moment, the request signal of other link set then can only be waited in line in request queue unit 102 according to the time sequencing of storage.
After the softer merging of a certain link set starts, state machine 105 transfers query State to by original idle condition, according to the link that the request signal of the different links of same link set of request queue unit 102 storage and each link set that parameter configuration unit 106 is known specifically comprise, link query unit 103 obtains participating in the link No. of all links of softer merging this time.Afterwards, state machine 105 transfers computing mode to by query State, joint account unit 104 and then the link No. that obtains according to link query unit 103 take out the demodulation value of respective link signals from prime demodulation module 101, and these demodulation values are merged add up, finally obtain the result and the output of current softer merging, so that the back level of signal is handled.Merge the signal that adds up this moment is the signal that belongs to a time slot of each bar link of same link set.
After the softer merging of this link set time slot is finished, joint account unit 104 sends a merging to state machine 105 and finishes signal, simultaneously, request queue unit 102 also receives the merging of transmitting from joint account unit 104 and finishes signal, the request signal of the respective link of finishing softer merging that 102 of request queue unit will wherein be stored is removed, afterwards, state machine 105 transfers original idle condition again to.When the softer merging request that belongs to same link set of next time slot is received by softer merging module 100, and when being requested queued units 102 storages, softer merging again will be activated.
Generally speaking, a link set comprises two to three links, but in order to make description clearer, below be that example is described all with the link set that comprises four links.
Relatively more crucial in the softer merging process is the removing of respective request signal after the storage of request signal and merging are finished, this two steps operation is finished by request queue unit 102, and the generative circuit of merging request signal storage in the request queue unit 102 and merging request clear signal as shown in Figure 2.Wherein, d type flip flop 201,202,203,204 with link to each other with door 205, link to each other with softer merging request signal input (Set) port of d type flip flop 206 again with door 205.Above-mentioned each d type flip flop all has two signal input ports, and one of them port is the Set port, is used to receive the softer merging request signal of a certain link, so that d type flip flop can store the softer merging request signal of this link; Another port is softer merging request clear signal input (Clr) port, is used to receive the softer merging request clear signal of respective link, so that d type flip flop can be removed the softer merging request signal of this link.
When the request signal of the link 0 that belongs to same link set is stored in the d type flip flop 201, the request signal of link 1 is stored in the d type flip flop 202, the request signal of link 2 is stored in the d type flip flop 203, when the request signal of link 3 is stored in the d type flip flop 204, article four, the request signal of link by with door 205, export one and merge request signal to d type flip flop 206 and be stored in wherein, this request signal that shows all links that belong to same link set all arrives.At this moment, once softer merging just has been activated.
Finishing merging when the demodulation value of this link set time slot adds up, be after the softer merging of certain time slot is finished, signal is finished in merging sent in the d type flip flop 201, as the merging request clear signal of link 0, the link 0 of then storage in the d type flip flop 201 merges request signal and is eliminated; Signal is finished in merging sent in the d type flip flop 202, as the merging request clear signal of link 1, the link 1 of then storage in the d type flip flop 202 merges request signal and is eliminated; Signal is finished in merging sent in the d type flip flop 203, as the merging request clear signal of link 2, the link 2 of then storage in the d type flip flop 203 merges request signal and is eliminated; Signal is finished in merging sent in the d type flip flop 204, the link 3 of then storage in the d type flip flop 204 merges request signal and is eliminated.Simultaneously, signal is finished in merging sent in the d type flip flop 206, as the merging request clear signal of a link set, then the whole link set and the request signal of storage are eliminated in the d type flip flop 206.Wherein, the merging that d type flip flop 201,202,203,204,206 is received finish signal be the joint account unit 104 described in Fig. 1 after current softer merging is finished, send to d type flip flop 201,202,203,204,206 by state machine 105.
Become basic softer merging sequential chart as shown in Figure 3 with above-mentioned hardware configuration, circuit bank.
When supposing that each time slot to same link set carries out softer merging, the arrival of each link request signal is that the request signal of link 0～3 arrives successively in proper order, the request signal that is link 0 arrives earlier, the request signal that is link 1 afterwards arrives, the 3rd arrival of the request signal of link 2, what arrive at last is the request signal of link 3.
Referring to Fig. 3, at the time slot 0 of a certain frame, the request signal of link 0 arrives earlier, and the request signal of link 1 arrives afterwards, and by that analogy, after the request signal of link 3 also arrived, softer merging started.After the signal of this frame slot 0 in the link 0,1,2,3 is finished softer merging, with the respective request signal removal of link 0,1,2,3.At next time slot is time slot 1, if the request signal of link 0,1,2,3 all arrives, then again softer merging starts.Equally, after the signal of this frame slot 1 in the link 0,1,2,3 is finished softer merging, respective request signal removal with link 0,1,2,3, and then carry out the softer merging of the signal of this frame slot 2 in the link 0,1,2,3, merge after finishing again respective request signal removal with link 0,1,2,3.
If the request signal of newly arrived link 0,1,2,3 is arranged all the time, the softer merging of this link set time slot signal then recited above will continue, and all merge up to all signals of this link set and finish; If newly arrived is the request signal of all links of comprising of other link set, then will carry out the softer merging of other link set.
The method of softer merging of above-described startup and removing request signal, after the request signal of all links that belong to same link set all arrives, the softer merging of commencing signal; After finishing once softer merging, the request signal full scale clearance of softer combined signal institute respective links will be finished.The method of softer merging of this startup and removing request signal has guaranteed the signal integrity of softer union operation each time.But simultaneously, also there is a serious defective in said method, and promptly when occurring merging mistake in the softer merging process, this mistake can't be corrected automatically.
When occurring merging mistake in the softer merging process, it merges sequential chart as shown in Figure 4.
When supposing that each time slot to same link set carries out softer merging, the arrival of each link request signal is that the request signal of link 0～3 arrives successively in proper order, the request signal that is link 0 arrives earlier, the request signal that is link 1 afterwards arrives, the 3rd arrival of the request signal of link 2, what arrive at last is the request signal of link 3.
Referring to Fig. 4,, cause the request signal of link 0 to lose for a certain reason at the time slot 0 of a certain frame, band arrow dotted line represents that request signal loses among Fig. 4, after then the request signal of link 1 arrives, second arrival of the request signal of link 2, the request signal of link 3 arrives at last.When the request signal of link 3 arrives, softer merging can't be carried out, and does not arrive fully because belong to the request signal of all links of same link set this moment, promptly has only the request signal of link 1,2,3, and not having the request signal of link 0, this does not meet the precondition of softer merging.
After the request signal of the link 0 of this frame slot 1 arrives, because the request signal that softer merging is not distinguished time slot and belonged to all links of same link set this moment all arrives, so softer merging starts.But the softer union operation of this moment is wrong, because be that the signal of link 1,2,3 time slots 0 and the signal of link 0 time slot 1 are carried out softer merging at this moment, and softer union operation should carry out the signal of the same time slot of each link.After this wrong merging was finished, corresponding request signal was eliminated.Identical with preceding once softer merging, at time slot 1, when the request signal of link 1,2,3 arrives, softer merging can't be carried out, because belonging to the request signal of all links of same link set this moment does not arrive fully, promptly have only the request signal of link 1,2,3, and do not have the request signal of link 0, this does not meet the precondition of softer merging.After the request signal of the link 0 of this frame slot 2 arrives, thus the time belong to all links of same link set request signal all arrive, so softer merging starts.But the softer union operation of this moment is wrong, because be that the signal of link 1,2,3 time slots 1 and the signal of link 0 time slot 2 are carried out softer merging at this moment, and softer union operation should carry out the signal of the same time slot of each link.After this wrong merging was finished, corresponding request signal was eliminated.
Do not correct or the termination measure because there is corresponding error to merge,, all merged up to all signals of this link set and finished so above-mentioned mistake merging can be sustained.
Merge similar with the above-mentioned mistake that causes because of request signal, after if the softer merging in crack is finished at a time, cause abnormal a removing in the request signal that will remove for a certain reason, then this request signal that is not eliminated also can cause the mistake of respective link collection to merge.As shown in Figure 5, at the time slot 0 of a certain frame, the request signal of link 0 arrives earlier, second arrival of the request signal of link 1, and the 3rd arrival of the request signal of link 2, the request signal of link 3 arrives at last.After the request signal of link 3 arrived, softer merging started.After this softer merging is finished, corresponding request signal is eliminated, do not remove but the request signal that causes link 3 for a certain reason is normal, band arrow dotted line is represented normally removing of request signal among Fig. 5, then at time slot 1, after the request signal of link 0,1,2 all arrives, because the request signal that softer merging is not distinguished time slot and belonged to all links of same link set this moment all arrives, so softer merging starts.But the softer union operation of this moment is wrong, because be that the signal of link 3 time slots 0 and the signal of link 0,1,2 time slots 1 are carried out softer merging at this moment, and softer union operation should carry out the signal of the same time slot of each link.After this wrong merging was finished, corresponding request signal was eliminated.Identical with preceding once softer merging, at time slot 1, when the request signal of link 3 arrives, softer merging can't be carried out, because belonging to the request signal of all links of same link set this moment does not arrive fully, promptly have only the request signal of link 3, and do not have the request signal of link 0,1,2, this does not meet the precondition of softer merging.After the request signal of the link 0,1,2 of this frame slot 2 arrives, thus the time belong to all links of same link set request signal all arrive, so softer merging starts.But the softer union operation of this moment is wrong, because be that the signal of link 3 time slots 1 and the signal of link 0,1,2 time slots 2 are carried out softer merging at this moment, and softer union operation should carry out the signal of the same time slot of each link.After this wrong merging was finished, corresponding request signal was eliminated.
Do not correct or the termination measure because there is corresponding error to merge,, all merged up to all signals of this link set and finished so above-mentioned mistake merging can be sustained.
Summary of the invention
In view of this, main purpose of the present invention is to provide more soft combination method of a kind of signal, makes the mistake of signal merge and can finish at first time slot of next frame, and then begins correct softer merging.
Another object of the present invention is to provide a kind of generating apparatus of softer merging request clear signal, make a certain moment after wrong the merging, carry out the initial time slot signal that each link signal that the same link set of softer merging comprises is same frame.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses more soft combination method of a kind of signal, store the current softer merging request signal of receiving, the link set signal of current time slots is merged, each signal merge finish after, this method is further comprising the steps of:
A. extract the timeslot number that each link in the current time slots link set carries out softer combined signal;
B. judge whether the timeslot number that each link carries out softer combined signal is 0, if all chain time gaps number are 0 or be not 0 all, then remove current all finish the pairing request signal of softer merging link signal; If timeslot number not all is 0, then remove timeslot number wherein and be not 0 the pairing request signal of link signal, do not remove timeslot number wherein and be 0 the pairing request signal of link signal.
The invention also discloses a kind of generating apparatus of softer merging request clear signal, this device comprises:
Time slot is 0 operational module, is used to judge whether the timeslot number of N link signal of a softer merging of the carrying out that link set comprises is 0, and judged result is imported N link merges request clear signal generation module;
Non-0 operational module of time slot is used to judge whether the timeslot number of N link signal of a softer merging of the carrying out that link set comprises all is not 0, and judged result is imported N link merges request clear signal generation module;
N link merges request clear signal generation module, and being used for receiving slot is the judged result of 0 operational module and non-0 operational module of time slot, and finally exports N merging request clear signal of a corresponding N link.
Described time slot is that 0 operational module comprises:
N comparator, each comparator are used to judge whether the timeslot number that a link carries out softer combined signal is 0, and with judged result input and door;
With door, be used for the timeslot number judged result of N comparator output is carried out and computing, and result of calculation is imported N link merging request clear signal generation module.
Non-0 operational module of described time slot comprises:
N comparator, each comparator are used to judge whether the timeslot number that a link carries out softer combined signal is not 0, and with judged result input and door;
With door, be used for the timeslot number judged result of N comparator output is carried out and computing, and result of calculation is imported N link merging request clear signal generation module.
Described N link merges in the request clear signal generation module, and each link merges request clear signal generation module and comprises:
Comparator, whether the timeslot number that a link that is used for judging N link carries out softer combined signal is not 0, and with the judged result input selector;
Selector, being used for comparator, time slot is that the described judged result that non-0 operational module of 0 operational module, time slot is exported is selected, and with selection result input and door;
With door, the selection result that is used for the merging that receives is finished the output of signal and selector is carried out and computing, and output and operation result.
Compared with prior art, the present invention is after each softer merging of signal is finished, before the respective request signal removal, each link in the same link set being carried out the timeslot number of softer combined signal checks, if timeslot number is 0 or be not 0 all, then removes all and finish the pairing request signal of softer merging time slot signal; If exist simultaneously timeslot number be 0 and timeslot number be not 0 signal, then remove timeslot number wherein and be not 0 the pairing request signal of signal, be 0 the pairing request signal of signal and keep timeslot number wherein.Use the present invention can guarantee that softer back to back back one frame slot 0 that is incorporated in of mistake of former frame finishes, and then begin correct softer merging from the time slot 0 of back one frame.
Description of drawings
Fig. 1 is the softer combinatorial construction sketch of prior art;
Fig. 2 is that prior art four links merge the request signal storage and remove circuit diagram;
Fig. 3 is the normally softer merging sequential charts of prior art four links;
Fig. 4 loses the softer merging sequential chart of the mistake that causes for prior art four links because of request signal;
Fig. 5 does not normally remove the softer merging sequential chart of mistake that causes for prior art four links because of request signal;
Fig. 6 merges the generative circuit figure of request clear signal for the present invention's four links;
Fig. 7 merges the generative circuit figure of request clear signal for N link of the present invention;
Fig. 8 is the softer merging sequential chart of the present invention's four links.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The present invention is different with prior art in the clear operation of request signal, promptly after the softer merging of signal of each time slot is finished, before the respective request signal removal, each link in the same link set being carried out the timeslot number of softer combined signal checks, if timeslot number is 0 or be not 0 all, then remove the pairing request signal of all link signals of finishing softer merging time slot; If exist simultaneously timeslot number be 0 and timeslot number be not 0 signal, then remove timeslot number wherein and be not 0 finish the pairing request signal of softer merging link signal, and keep timeslot number wherein be 0 finish the pairing request signal of softer merging link signal, finish with softer back to back back one frame slot 0 that is incorporated in of the mistake of guaranteeing former frame, and then begin correct softer merging from the time slot 0 of back one frame.
Below, merge into example present invention is described so that one four link is softer.
Fig. 6 merges the generating apparatus of request clear signal for the present invention's four links, as shown in Figure 6, to comprise time slot be that non-0 operational module 619 of 0 operational module 600, time slot, link 0 merges request clear signal generation module 620, link 1 and merge that request clear signal generation module 621, link 2 merge request clear signal generation modules 622, link 3 merges request clear signal generation modules 623 to this device.
Wherein, time slot be 0 operational module 600 comprise comparator 601,602,603,604 and with door 605.Comparator 601 is used to judge whether the timeslot number of the link 0 that participates in current softer merging is 0, if be 0, then output signal 1, otherwise, output signal 0; Comparator 602 is used to judge whether the timeslot number of the link 1 that participates in current softer merging is 0, if be 0, then output signal 1, otherwise, output signal 0; Comparator 603 is used to judge whether the timeslot number of the link 2 that participates in current softer merging is 0, if be 0, then output signal 1, otherwise, output signal 0; Comparator 604 is used to judge whether the timeslot number of the link 3 that participates in current softer merging is 0, if be 0, then output signal 1, otherwise, output signal 0.Above-mentioned four comparators all with link to each other with door 605, when the judged result of these four comparators is respectively that the timeslot number of each link signal is when being 0, four comparators all to door 605 output signals 1, with door 605 and then output signal A11_0, and this moment, the value of signal A11_0 was 1, and the current timeslot number that carries out each link signal of softer merging of this signal indicating is 0.In contrast, if the current timeslot number that carries out each link signal of softer merging not all is 0, in the comparator 601,602,603,604 one or more will to door 605 output signals 0, with 605 output signal A11_0 of door, and this moment signal A11_0 value be 0.
Non-0 operational module 619 of time slot comprise comparator 606,607,608,609 and with door 610.Comparator 606 is used to judge whether the timeslot number of the link 0 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0; Comparator 607 is used to judge whether the timeslot number of the link 1 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0; Comparator 608 is used to judge whether the timeslot number of the link 2 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0; Comparator 609 is used to judge whether the timeslot number of the link 3 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0.Above-mentioned four comparators all with link to each other with door 610, when the judged result of these four comparators is respectively that the timeslot number of each link signal is when all being not 0, four comparators all to door 610 output signals 1, with door 610 and then output signal All_not_0, and this moment, the value of signal All_not_0 was 1, and the current timeslot number that carries out each link signal of softer merging of this signal indicating all is not 0.In contrast, if the current timeslot number that carries out each link signal of softer merging is not all not to be 0, in the comparator 606,607,608,609 one or more will to door 610 output signals 0, with 610 output signal All_not_0 of door, and this moment signal All_not_0 value be 0.
In the above-mentioned comparator, comparator 606 to the signal of door 610 input, can generate by an aforesaid comparator as self-contained unit, also can obtain by signal negate with comparator 601 outputs.Equally, comparator 607 to the signal of door 610 input, can generate by a comparator as self-contained unit, also can obtain by signal negate with comparator 602 outputs; Comparator 608 to the signal of door 610 input, can generate by a comparator as self-contained unit, also can obtain by signal negate with comparator 603 outputs; Comparator 609 to the signal of door 610 input, can generate by a comparator as self-contained unit, also can obtain by signal negate with comparator 604 outputs;
For convenience, can suppose that comparator 606 is the comparators as self-contained unit, rather than to the negate of comparator 601 output signals; Comparator 607 is the comparators as self-contained unit, rather than to the negate of comparator 602 output signals; Comparator 608 is the comparators as self-contained unit, rather than to the negate of comparator 603 output signals; Comparator 609 is the comparators as self-contained unit, rather than to the negate of comparator 604 output signals.
Time slot is that non-0 operational module 619 of 0 operational module 600, time slot all asks clear signal generation module 620, link 1 to merge request clear signal generation module 621 with link 0 merging, link 2 merging ask clear signal generation modules 622, link 3 merging request clear signal generation modules 623 to link to each other.
Wherein, link 0 merge request clear signal generation module 620 comprise comparator 624, selector 611 and with door 612; Link 1 merge request clear signal generation module 621 comprise comparator 625, selector 613 and with door 614; Link 2 merge request clear signal generation modules 622 comprise comparator 626, selector 615 and with door 616; Link 3 merge request clear signal generation modules 623 comprise comparator 627, selector 617 and with door 618.
In the above-mentioned comparator 624,625,626,627, comparator 624 is used to judge whether the timeslot number of the link 0 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0; Comparator 625 is used to judge whether the timeslot number of the link 1 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0; Comparator 626 is used to judge whether the timeslot number of the link 2 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0; Comparator 627 is used to judge whether the timeslot number of the link 3 that participates in current softer merging is not 0, if be not 0, then output signal 1, otherwise, output signal 0.As can be seen, comparator 624 is actually hardware, two all identical comparators of effect with comparator 606, so in actual applications, comparator 624 can be linked to each other with selector 611, also can remove comparator 624, and directly comparator 606 be linked to each other with selector 611; In like manner, comparator 625 can be linked to each other with selector 613, also can remove comparator 625, and directly comparator 607 be linked to each other with selector 613; Comparator 626 can be linked to each other with selector 615, also can remove comparator 626, and directly comparator 608 be linked to each other with selector 615; Comparator 627 can be linked to each other with selector 617, also can remove comparator 627, and directly comparator 609 be linked to each other with selector 617.Wherein, selector 611,613,615,617 also can replace with respectively one or.
When softer merging request signal is checked and is removed, have three kinds of different situations and take place, below, just respectively three kinds of different situations are described in detail.
First kind of situation: the current timeslot number that carries out each link signal of softer merging is 0
At this moment, comparator 601,602,603,604 all to door 605 output signals 1, with door 605 and then to selector 611,613,615,617 output signal All_0, and this moment signal All_0 value be 1; Comparator 606,607,608,609 all to door 610 output signals 0, with door 610 and then to selector 611,613,616,617 output signal All_not_0, and this moment signal All_not_0 value be 0; Simultaneously, comparator 624 is to selector 611 output signals 0, and comparator 625 is to selector 613 output signals 0, and comparator 626 is to selector 615 output signals 0, and comparator 627 is to selector 617 output signals 0.
When being 1 signal with door 612 values of receiving, if having received again to merge finishes signal, then export a Clr0 signal, and the value of this signal is 1, this has shown the request signal that can remove link 0 now; Otherwise with Clr0 signal of door 612 output, and the value of this signal is 0, and this shows the request signal that can not remove link 0 now.
When being 1 signal with door 614 values of receiving, if having received again to merge finishes signal, then export a Clr1 signal, and the value of this signal is 1, this has shown the request signal that can remove link 1 now; Otherwise with Clr1 signal of door 614 output, and the value of this signal is 0, and this shows the request signal that can not remove link 1 now.
When being 1 signal with door 616 values of receiving, if having received again to merge finishes signal, then export a Clr2 signal, and the value of this signal is 1, this has shown the request signal that can remove link 2 now; Otherwise with Clr2 signal of door 616 output, and the value of this signal is 0, and this shows the request signal that can not remove link 2 now.
When being 1 signal with door 618 values of receiving, if having received again to merge finishes signal, then export a Clr3 signal, and the value of this signal is 1, this has shown the request signal that can remove link 3 now; Otherwise with Clr3 signal of door 618 output, and the value of this signal is 0, and this shows the request signal that can not remove link 3 now.
Wherein, the merging of receiving with door 612,614,616,618 finish signal be the joint account unit 104 described in Fig. 1 after current softer merging is finished, by state machine 105 to sending with door 612,614,616,618.
In above-described first kind of situation, the current timeslot number that carries out each link signal of softer merging is 0, then after once softer merging is finished, all request signals of each link correspondence is all removed.
Second kind of situation: the current timeslot number that carries out each link signal of softer merging all is not 0
At this moment, comparator 601,602,603,604 all to door 605 output signals 0, with door 605 and then to selector 611,613,615,617 output signal All_0, and this moment signal All_0 value be 0; Comparator 606,607,608,609 all to door 610 output signals 1, with door 610 and then to selector 611,613,615,617 output signal All_not_0, and this moment signal All_not_0 value be 1; Simultaneously, comparator 624 is to selector 611 output signals 1, and comparator 625 is to selector 613 output signals 1, and comparator 626 is to selector 615 output signals 1, and comparator 627 is to selector 617 output signals 1.
When being 1 signal with door 612 values of receiving, if having received again to merge finishes signal, then export a Clr0 signal, and the value of this signal is 1, this has shown the request signal that can remove link 0 now; Otherwise with Clr0 signal of door 612 output, and the value of this signal is 0, and this shows the request signal that can not remove link 0 now.
When being 1 signal with door 614 values of receiving, if having received again to merge finishes signal, then export a Clr1 signal, and the value of this signal is 1, this has shown the request signal that can remove link 1 now; Otherwise with Clr1 signal of door 614 output, and the value of this signal is 0, and this shows the request signal that can not remove link 1 now.
When being 1 signal with door 616 values of receiving, if having received again to merge finishes signal, then export a Clr2 signal, and the value of this signal is 1, this has shown the request signal that can remove link 2 now; Otherwise with Clr2 signal of door 616 output, and the value of this signal is 0, and this shows the request signal that can not remove link 2 now.
When being 1 signal with door 618 values of receiving, if having received again to merge finishes signal, then export a Clr3 signal, and the value of this signal is 1, this has shown the request signal that can remove link 3 now; Otherwise with Clr3 signal of door 618 output, and the value of this signal is 0, and this shows the request signal that can not remove link 3 now.
Wherein, the merging of receiving with door 612,614,616,618 finish signal be the joint account unit 104 described in Fig. 1 after current softer merging is finished, by state machine 105 to sending with door 612,614,616,618.
In above-described second kind of situation, the current timeslot number that carries out each link signal of softer merging all is not 0, then after once softer merging is finished, all request signals of each link correspondence is all removed.
The third situation: the current timeslot number that carries out each link signal of softer merging not all is 0
When the timeslot number of each link signal that carries out softer merging not all is 0, can multiple different situations specifically appear, and the timeslot number of one or more promptly different link signals is 0, and the timeslot number of other one or more link signals is not 0.For above different situations, handling principle of the present invention is identical, so, for convenience, suppose that the current timeslot number that carries out the link 0 of softer merging is 0, and the timeslot number of other three links all is not 0.
At this moment, comparator 601 to door 605 output signals 1, and comparator 602,603,604 all to door 605 output signals 0, with door 605 and then to selector 611,613,615,617 output signal All_0, and this moment signal All_0 value be 0; Comparator 606 to door 610 output signals 0, and comparator 607,608,609 all to door 610 output signals 1, with door 610 and then to selector 611,613,615,617 output signal All_not_0, and this moment signal All_not_0 value be 0; Simultaneously, comparator 624 is to selector 611 output signals 0, and comparator 625 is to selector 613 output signals 1, and comparator 626 is to selector 615 output signals 1, and comparator 627 is to selector 617 output signals 1.
When being 0 signal, no matter whether having received again to merge and finished signal, all will export a Clr0 signal, and the value of this signal is 0 that this shows the request signal that can not remove link 0 now with door 612 values of receiving.
When being 1 signal with door 614 values of receiving, if having received again to merge finishes signal, then export a Clr1 signal, and the value of this signal is 1, this has shown the request signal that can remove link 1 now; Otherwise with Clr1 signal of door 614 output, and the value of this signal is 0, and this shows the request signal that can not remove link 1 now.
When being 1 signal with door 616 values of receiving, if having received again to merge finishes signal, then export a Clr2 signal, and the value of this signal is 1, this has shown the request signal that can remove link 2 now; Otherwise with Clr2 signal of door 616 output, and the value of this signal is 0, and this shows the request signal that can not remove link 2 now.
When being 1 signal with door 618 values of receiving, if having received again to merge finishes signal, then export a Clr3 signal, and the value of this signal is 1, this has shown the request signal that can remove link 3 now; Otherwise with Clr3 signal of door 618 output, and the value of this signal is 0, and this shows the request signal that can not remove link 3 now.
Wherein, the merging of receiving with door 612,614,616,618 finish signal be the joint account unit 104 described in Fig. 1 after current softer merging is finished, by state machine 105 to sending with door 612,614,616,618.
In above-described the third situation, in current each link signal that carries out softer merging, the timeslot number that has only link 0 is 0, then after once softer merging is finished, the request signal of link 1,2,3 correspondences is all removed, and is kept the request signal of link 0 correspondence.
Said apparatus is the generative circuit that four links merge the request clear signal, and when a number of links that link set comprised was N, the generative circuit of this N link merging request clear signal then as shown in Figure 7.Device shown in Figure 7 is identical with the operation principle of device shown in Figure 6, the unique difference of stream oriented device is: device shown in Figure 6 is checked the timeslot number that four links that same link set comprised carry out softer combined signal, if timeslot number is 0 or be not 0 all, then remove four pairing request signals of link signal that all finish softer merging time slot; If exist simultaneously timeslot number be 0 and timeslot number be not 0 signal, then remove timeslot number wherein and be not 0 finish the pairing request signal of softer merging link signal, and keep timeslot number wherein be 0 finish the pairing request signal of softer merging link signal.Device shown in Figure 7 then is that the timeslot number that N link that same link set is comprised carries out softer combined signal is checked, if timeslot number is 0 or be not 0 all, then remove the pairing request signal of all N that finishes softer merging time slot link signals; If exist simultaneously timeslot number be 0 and timeslot number be not 0 signal, then remove timeslot number wherein and be not 0 finish the pairing request signal of softer merging link signal, and keep timeslot number wherein be 0 finish the pairing request signal of softer merging link signal.
When the present invention carried out the softer merging of four links, its softer merging sequential chart as shown in Figure 8.
When supposing that each time slot to same link set carries out softer merging, the arrival of each link request signal is that the request signal of link 0～3 arrives successively in proper order, the request signal that is link 0 arrives earlier, the request signal that is link 1 afterwards arrives, the 3rd arrival of the request signal of link 2, what arrive at last is the request signal of link 3.
Referring to Fig. 8, time slot 14 at a certain frame, cause the request signal of link 0 to lose for a certain reason, Fig. 8 band arrow dotted line represents that request signal loses, after then the request signal of link 1 arrives, second arrival of the request signal of link 2, the request signal of link 3 arrives at last, but when the request signal of link 3 arrived, softer merging can't be carried out.Do not arrive fully because belong to the request signal of all links of same link set this moment, promptly have only the request signal of link 1,2,3, and do not have the request signal of link 0, this does not meet the precondition of softer merging.
After the request signal of the link 0 of next frame slot 0 arrives, all arrive because belong to the request signal of all links of same link set this moment, so softer merging starts.But the softer union operation of this moment is wrong, because be that the signal of link 1,2,3 a certain frame slots 14 and the signal of link 0 next frame time slot 0 are carried out softer merging at this moment, and softer union operation should carry out the signal of the same time slot of each link.After this wrong merging was finished, the request signal of link 1,2,3 was eliminated, and the request signal of link 0 then is retained.Afterwards, the request signal of link 1 and link 2 arrives respectively, and when the request signal of link 3 also arrived, again softer merging started.At this moment, the signal that link 1,2,3 participates in softer merging and the pairing signal of link 0 request signal that is retained be all at same frame, and timeslot number is 0, promptly this time softer merge into correct.After current correct softer merging was finished, the request signal of link 0,1,2,3 all was eliminated.When next time slot, when the request signal of link 0,1,2,3 all arrived, again softer merging started.At this moment, link 0,1,2,3 participates in the signal of softer merging all at same frame, and timeslot number is 1, and promptly softer merging this time also is correct.
After finishing for softer merging, the situation that request signal is not normally removed, the request signal sweep-out method principle when the request signal sweep-out method is lost with the above request signal is identical.Suppose, at a certain frame slot 14, after a link set that comprises four links is finished the softer merging of signal, link 0,1,2 request signal is all removed, but cause the request signal of link 3 normally not remove for a certain reason, then at the time slot 0 of next frame, when link 0,1, after 2 request signal arrives, softer merging starts, but, the softer union operation of this moment is wrong, because be signal and link 0 to link 3 a certain frame slots 14 at this moment, 1, the signal of 2 next frame time slots 0 carries out softer merging, and softer union operation should carry out the signal of the same time slot of each link.After this wrong merging was finished, the request signal of link 3 was eliminated, and the request signal of link 0,1,2 then is retained.Afterwards, link 3 request signals arrive, and again softer merging starts.At this moment, the signal that link 3 participates in softer merging and the pairing signal of link 0,1,2 request signals that is retained be all at same frame, and timeslot number is 0, promptly this time softer merge into correct.After current correct softer merging was finished, the request signal of link 0,1,2,3 all was eliminated.When next time slot, when the request signal of link 0,1,2,3 all arrived, again softer merging started.At this moment, link 0,1,2,3 participates in the signal of softer merging all at same frame, and timeslot number is 1, and promptly softer merging this time also is correct.
By the above as can be seen, softer back to back back one frame slot 0 that is incorporated in of the mistake of former frame finishes.
By the above as can be seen, the present invention guarantees that softer back to back back one frame slot 0 that is incorporated in of the mistake of former frame finishes, and then begins correct softer merging from the time slot 0 of back one frame.The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1, a kind of signal soft combination method is more stored the current softer merging request signal of receiving, the link set signal of current time slots is merged, it is characterized in that, each signal merge finish after, this method is further comprising the steps of:
A. extract the timeslot number that each link in the current time slots link set carries out softer combined signal;
B. judge whether the timeslot number that each link carries out softer combined signal is 0, if all chain time gaps number are 0 or be not 0 all, then remove current all finish the pairing request signal of softer merging link signal; If timeslot number not all is 0, then remove timeslot number wherein and be not 0 the pairing request signal of link signal, do not remove timeslot number wherein and be 0 the pairing request signal of link signal.
2, a kind of generating apparatus of softer merging request clear signal is characterized in that, this device comprises:
Time slot is 0 operational module, is used to judge whether the timeslot number of N link signal of a softer merging of the carrying out that link set comprises is 0, and judged result is imported N link merges request clear signal generation module;
Non-0 operational module of time slot is used to judge whether the timeslot number of N link signal of a softer merging of the carrying out that link set comprises all is not 0, and judged result is imported N link merges request clear signal generation module;
N link merges request clear signal generation module, and being used for receiving slot is the judged result of 0 operational module and non-0 operational module of time slot, and finally exports N merging request clear signal of a corresponding N link.
3, device as claimed in claim 2 is characterized in that, described time slot is that 0 operational module comprises:
N comparator, each comparator are used to judge whether the timeslot number that a link carries out softer combined signal is 0, and with judged result input and door;
With door, be used for the timeslot number judged result of N comparator output is carried out and computing, and result of calculation is imported N link merging request clear signal generation module.
4, device as claimed in claim 2 is characterized in that, non-0 operational module of described time slot comprises:
N comparator, each comparator are used to judge whether the timeslot number that a link carries out softer combined signal is not 0, and with judged result input and door;
With door, be used for the timeslot number judged result of N comparator output is carried out and computing, and result of calculation is imported N link merging request clear signal generation module.
5, device as claimed in claim 2 is characterized in that, described N link merges in the request clear signal generation module, and each link merges request clear signal generation module and comprises:
Comparator, whether the timeslot number that a link that is used for judging N link carries out softer combined signal is not 0, and with the judged result input selector;
Selector, being used for comparator, time slot is that the described judged result that non-0 operational module of 0 operational module, time slot is exported is selected, and with selection result input and door;
With door, the selection result that is used for the merging that receives is finished the output of signal and selector is carried out and computing, and output and operation result.
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| CNB2004100383768A CN100372260C (en) | 2004-05-24 | 2004-05-24 | A signal combining method and apparatus |
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| CNB2004100383768A CN100372260C (en) | 2004-05-24 | 2004-05-24 | A signal combining method and apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008028386A1 (en) * | 2006-08-31 | 2008-03-13 | Huawei Technologies Co. , Ltd. | Method for mobile communication handoff and system and basestation thereof |
| CN101128037B (en) * | 2006-08-17 | 2010-09-08 | 华为技术有限公司 | Switching method and system for mobile communication |
| CN101242235B (en) * | 2008-02-28 | 2010-10-27 | 华为技术有限公司 | Updated soft merging method, system and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1142414B1 (en) * | 1998-12-18 | 2008-02-13 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for resource reservation in a mobile radio communications system |
| US7058035B2 (en) * | 2001-06-29 | 2006-06-06 | Qualcomm, Indorporated | Communication system employing multiple handoff criteria |
| GB2391748A (en) * | 2002-08-02 | 2004-02-11 | Hutchison Whampoa Three G Ip | Improved Channelisation Code Management in CDMA. |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128037B (en) * | 2006-08-17 | 2010-09-08 | 华为技术有限公司 | Switching method and system for mobile communication |
| WO2008028386A1 (en) * | 2006-08-31 | 2008-03-13 | Huawei Technologies Co. , Ltd. | Method for mobile communication handoff and system and basestation thereof |
| US8121603B2 (en) | 2006-08-31 | 2012-02-21 | Huawei Technologies Co., Ltd. | Method for mobile communication handover and system and base station thereof |
| CN101242235B (en) * | 2008-02-28 | 2010-10-27 | 华为技术有限公司 | Updated soft merging method, system and device |
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