CN102076018B - Method and device for detecting physical broadcast channel - Google Patents
Method and device for detecting physical broadcast channel Download PDFInfo
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- CN102076018B CN102076018B CN 201010600679 CN201010600679A CN102076018B CN 102076018 B CN102076018 B CN 102076018B CN 201010600679 CN201010600679 CN 201010600679 CN 201010600679 A CN201010600679 A CN 201010600679A CN 102076018 B CN102076018 B CN 102076018B
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Abstract
The embodiment of the invention provides a method and a device for detecting a physical broadcast channel. The method comprises the following steps of: collecting first wireless frame data; performing physical broadcast channel detection on the first wireless frame data; and finishing the current detection if the physical broadcast channel information is detected. By applying the embodiment of the invention, when the data is less than 40ms, the required physical broadcast channel (PBCH) information can be acquired by traversing and analyzing data at different positions in a PBCH Buffer. Under normal condition, the PBCH information can be detected in 10ms, so the detection delay is greatly shortened, and guarantee is provided for other service operation, such as user equipment (UE) accessing, switching and the like.
Description
Technical field
The present invention relates to detect Physical Broadcast Channel detection technique field, particularly a kind of detection Physical Broadcast Channel method and device.
Background technology
Long evolving system (LTE, Long Term Evolution) in the cellular system, the base station with residential quarter public information coded modulation such as antenna number, bandwidth after, with some cycles at Physical Broadcast Channel (PBCH, Physical Broadcasting Channel) cocycle sends. and subscriber equipment (UE) is by detecting the PBCH residential quarter public information that obtains to network necessary and the radio frame number (FN, Frame Number) of system.
LTE system wireless frame length is 10ms, and the transmission cycle of PBCH is 40ms, is to send in the cycle with four continuous radio frames namely.
It is as follows that PBCH specifically launches the flow process brief introduction:
PBCH transmission block (Transport Block is hereinafter to be referred as PBCH TB) has comprised residential quarter public informations such as antenna in cell number, bandwidth and System Frame Number.
At first, for PBCH transmission block (TB, Transport Block are called for short PBCH TB), add 16Bit cyclic redundancy check (CRC) code (CRC, Cyclic redundancy code).Carry out convolutional encoding (CC) coding.
Afterwards, carry out rate-matched (Rate Matching).Because the bit number behind the CC coding is far smaller than the bit number that running time-frequency resource that PBCH takies can carry, the rate adaptation operating here is actually the information behind the PBCH coding is repeated many times.
Then, the coding after the rate-matched is carried out scrambling, modulation treatment; Data after the modulation are divided into quarter.Be mapped to respectively on four continuous radio frames.Each radio frames has been reserved running time-frequency resource and has been used for sending PBCH.Wherein first radio frames frame number (FN) satisfies MOD (FN, 4)=0.
The mode of the sliding window of available technology adopting detects PBCH, and referring to Fig. 1, it is existing P BCH detection scheme schematic diagram.Specifically may further comprise the steps:
As seen, it is consuming time more to detect PBCH in the prior art, needs 40ms at least, usually, may need 70ms just can detect PBCH information at most under with the prerequisite of one-period, has influenced UE and has gone into switch speed under net spee and some scene.
Summary of the invention
The embodiment of the invention provides a kind of detection Physical Broadcast Channel method and device, can reduce and detect time-delay, improves detection speed, thereby reduces the handover delay under UE networking time delay and some scene.
The embodiment of the invention provides a kind of detection Physical Broadcast Channel method, comprising:
Collect first wireless frame data;
Described first wireless frame data is carried out Physical Broadcast Channel PBCH to be detected;
If detect Physical Broadcast Channel information, then finish current detection.
The embodiment of the invention also provides a kind of detection Physical Broadcast Channel device, comprising:
Collector unit is used for collecting first wireless frame data;
Detecting unit is used for that described first wireless frame data is carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
Use the detection Physical Broadcast Channel method and apparatus that the embodiment of the invention provides, after receiving a Frame, just the PBCH data in the Frame can be placed among the PBCH Buffer and resolve, can obtain required PBCH information, generally 10ms can detect PBCH information, effectively dwindled the detection time delay, for other business operations such as UE access, switching etc. provide guarantee.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is existing P BCH detection scheme schematic diagram;
Fig. 2 is a kind of detection Physical Broadcast Channel method flow diagram according to the embodiment of the invention;
Fig. 3 is the flow chart according to an instantiation of the present invention;
Fig. 4 carries out the scheme schematic diagram that PBCH detects according to the embodiment of the invention to a radio frames;
Fig. 5 carries out the scheme schematic diagram that PBCH detects according to the embodiment of the invention to two radio frames;
Fig. 6 carries out the scheme schematic diagram that PBCH detects according to the embodiment of the invention to three radio frames;
Fig. 7 is a kind of apparatus structure schematic diagram that detects Physical Broadcast Channel according to the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 2, it is a kind of detection Physical Broadcast Channel method flow diagram according to the embodiment of the invention, and this method specifically comprises:
Usually, a radio frames is the 10ms data;
Need to prove that if do not detect Physical Broadcast Channel information by described first radio frames, then the described method of Fig. 2 can also comprise: collect second wireless frame data; Described first and second wireless frame data are carried out PBCH to be detected; If detect Physical Broadcast Channel information, then finish current detection.
Need to prove that if do not detect Physical Broadcast Channel information by described first and second radio frames, then the described method of Fig. 2 can also comprise: collect the 3rd wireless frame data; Described first, second, and third wireless frame data carried out PBCH to be detected; If detect Physical Broadcast Channel information, then finish current detection.
Need to prove that if do not detect Physical Broadcast Channel information by described first, second, and third radio frames, then the described method of Fig. 2 can also comprise: collect the 4th wireless frame data; Described first to fourth wireless frame data carried out PBCH to be detected; If detect Physical Broadcast Channel information, then finish current detection.
Need to prove, if do not detect Physical Broadcast Channel information by described first to fourth radio frames, then regather a radio frames (10ms data), simultaneously initial 10ms data in the old data are lost, form 1 new 40ms data.Repeat by first to fourth radio frames being carried out the detection step that PBCH detects.This process cycle is reciprocal, up to detecting PBCH.
Use the method that the embodiment of the invention provides, as long as receiving a radio frames just can resolve by this wireless frame data is placed among the PBCH Buffer, the diverse location that for example is placed on PBCH Buffer travels through parsing, can obtain required PBCH information, generally 10ms can detect PBCH information, effectively dwindled the detection time delay, for other business operations such as UE access, switching etc. provide guarantee.
Below in conjunction with specific embodiment the present invention is elaborated again.
Referring to Fig. 3, it is the flow chart of one instantiation according to the present invention, specifically comprises:
Referring to Fig. 4, it is according to the embodiment of the invention radio frames to be carried out the scheme schematic diagram that PBCH detects, among this figure, a pane in left side represents that the length of a radio frames is the 10ms data, wherein, lattice portion is divided the data that are used for the PBCH detection of correspondence in these 10ms data of expression, and four figure on right side then represent the data that are used for the PBCH detection corresponding in these 10ms data are put into successively the 0th, 1,2,3 parts of PCHC buffer memory.In conjunction with Fig. 3 and Fig. 4, this moment, this step can specifically comprise:
I) distribute the internal memory (Buffer) that detects input as PBCH, save as the size of data of 40msPBCH correspondence in this, described internal memory is divided into 4 equal portions, every part of number consecutively is the 0th part, part 1, part 2 and the 3rd part;
Be the data that the 10ms extracting data goes out the PBCH correspondence from first wireless frame data ii);
Iii) with step I i) in the data of the PBCH correspondence that extracts put into the 0th part of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel (PBCH) information, then finish, otherwise execution in step iv);
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=0;
Need to prove that above-mentioned iii) related to carry out the specific implementation process that PBCH detects identical with existing implementation procedure, give unnecessary details no longer in detail, below similar same.
Iv) with step I i) in the data of the PBCH correspondence that extracts put into the part 1 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step v);
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=1;
V) with step I i) in the data of the PBCH correspondence that extracts put into the part 2 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step vi);
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=2;
Vi) with step I i) in the data of the PBCH correspondence that extracts put into the 3rd part of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step 303;
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=3;
Step 303 is collected second wireless frame data; This radio frames is similarly the 10ms data;
Step 304 is carried out PBCH to described first and second wireless frame data and is detected, and judges whether to detect PBCH information, if, then finish, otherwise execution in step 305;
Owing to need detect two 10ms data, therefore have following two kinds of situations:
1: the first radio frames of situation and second radio frames belong to different cycles, and namely two 10ms data belong to former and later two 40ms cycles respectively; Back 10ms data independently can be carried out abovementioned steps 302 described detection steps as input in this case;
2: the first radio frames of situation and second radio frames belong to same one-period, and namely two 10ms data belong to the same 40ms cycle; First and second radio frames can be carried out joint-detection in this case.
At above-mentioned two kinds of situations, step 304 can specifically comprise:
01) from second radio frames, extracts the data of PBCH correspondence;
02) second radio frames carried out independently PBCH detection, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 03);
Need to prove, if detect Physical Broadcast Channel information, can judge further that described first radio frames and second radio frames belong to different cycles; If do not detect Physical Broadcast Channel information, can judge further that described first radio frames and second radio frames belong to same one-period;
03) described first and second radio frames are carried out joint-detection, described joint-detection specifically may further comprise the steps:
Referring to Fig. 5, it is according to the embodiment of the invention two radio frames to be carried out the scheme schematic diagram that PBCH detects, among this figure, two panes in left side are represented two wireless frame data respectively, the length of each wireless frame data is the 10ms data, wherein, lattice portion is divided the data that are used for the PBCH detection corresponding in first 10ms data of expression, vertical line is partly represented the data that are used for the PBCH detection of correspondence in second 10ms data, and three figure on right side then represent the data that are used for the PBCH detection corresponding in these two 10ms data are put into the 0th and 1 of PCHC buffer memory successively, 1 and 2,2 and 3 parts.In conjunction with Fig. 3 and Fig. 5, this moment, this step can specifically comprise:
I) data of the PBCH correspondence that will extract from two radio frames are put into the 0th, 1 part of PBCH internal memory, with all the other two parts zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step ii);
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=0;
Ii) the data of the PBCH correspondence that extracts are put into the 1st, 2 parts of PBCH internal memory, with all the other two parts zero setting, carried out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step iii);
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=1;
Iii) the data of the PBCH correspondence that extracts are put into the 2nd, 3 parts of PBCH internal memory, with all the other two parts zero setting, carried out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step 305;
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=2;
Step 305 is collected the 3rd wireless frame data; This radio frames is similarly the 10ms data;
Step 306 is carried out PBCH to described first, second, and third wireless frame data and is detected, and judges whether to detect PBCH information, if, then finish, otherwise execution in step 307;
Owing to need detect three 10ms data, therefore have following three kinds of situations:
Situation 1: first, second radio frames belongs to same one-period, and the 3rd radio frames and preceding two radio frames belong to different cycles, and namely preceding two 10ms data belong to the previous 40ms cycle, and back 10ms data belong to a back 40ms cycle; The 3rd 10ms data independently can be carried out abovementioned steps 302 described detection steps as input in this case;
Situation 2: first radio frames and described second, third radio frames belong to different cycles, and be concrete, and previous 10ms data belong to the previous 40ms cycle, and latter two 10ms data belong to a back 40ms cycle; Second and third radio frames can be carried out joint-detection in this case; Wherein, can be with reference to abovementioned steps 304 to the step of two frame joint-detection;
Situation 3: the first to the 3rd radio frames all belongs to same one-period, and namely three 10ms data belong to the same 40ms cycle; First, second and third radio frames can be carried out joint-detection in this case;
At above-mentioned three kinds of situations, step 306 can specifically comprise:
01) from the 3rd radio frames, extracts the data of PBCH correspondence;
02) described the 3rd radio frames carried out independently PBCH detection, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 03);
Need to prove, if detect Physical Broadcast Channel information, can judge further that described first and second radio frames and the 3rd radio frames belong to different cycles;
03) PBCH that described second and third radio frames is united detects, if detect Physical Broadcast Channel information, then finishes current detection; Otherwise execution in step 04);
Need to prove, when the PBCH that second and third radio frames is united detects, if detect Physical Broadcast Channel information, can judge further that then described first radio frames and described second, third radio frames belong to different cycles; If do not detect Physical Broadcast Channel information, can judge further that then described first to the 3rd radio frames all belongs to same one-period;
04) described first, second, and third radio frames carried out joint-detection, described joint-detection specifically may further comprise the steps:
Referring to Fig. 6, it is according to the embodiment of the invention three radio frames to be carried out the scheme schematic diagram that PBCH detects, among this figure, three panes in left side are represented three wireless frame data respectively, the length of each wireless frame data is the 10ms data, wherein, lattice portion is divided the data that are used for the PBCH detection corresponding in first 10ms data of expression, vertical line is partly represented the data that are used for the PBCH detection corresponding in second 10ms data, horizontal line is partly represented the data that are used for the PBCH detection of correspondence in the 3rd the 10ms data, and two figure on right side then represent the data that are used for the PBCH detection corresponding in these three 10ms data are put into the 0th of PCHC buffer memory successively, 1,2, with the 1st, 2,3 parts.In conjunction with Fig. 3 and Fig. 6, this moment, this step can specifically comprise:
I) data of the PBCH correspondence that will extract from three radio frames are put into the 0th, 1,2 parts of PBCH internal memory, with remainder zero setting, carry out PBCH and detect, if detect PBCH information, then finish, otherwise execution in step ii);
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=0;
Ii) the data of the PBCH correspondence that extracts are put into the 1st, 2,3 parts of PBCH internal memory, with remainder zero setting, carried out PBCH and detect, if detect PBCH information, then finish, otherwise execution in step 307;
Need to prove, when detecting PBCH information under this situation, can know simultaneously that this moment, the radio frames frame number satisfied MOD (FN, 4)=1;
Step 307 is collected the 4th wireless frame data;
Step 308 is carried out PBCH to described first to fourth wireless frame data and is detected, and judges whether to detect PBCH information, if, then finish, otherwise execution in step 309;
Owing to need detect four 10ms data, therefore have following four kinds of situations:
Situation 1: the first to the 3rd radio frames belongs to same one-period, and the 4th radio frames and first three radio frames belong to different cycles, and namely first three 10ms data belongs to the previous 40ms cycle, and back 10ms data belong to a back 40ms cycle; The 3rd 10ms data independently can be carried out abovementioned steps 302 described detection steps as input in this case;
Situation 2: first and second radio frames belongs to same one-period, three, the 4th radio frames belongs to same one-period, but first and second radio frames and the 3rd, the 4th radio frames do not belong to same one-period, be that preceding two 10ms data belong to the previous 40ms cycle, latter two 10ms data belong to a back 40ms cycle; Third and fourth radio frames can be carried out joint-detection in this case; Wherein, can be with reference to abovementioned steps 304 to the step of two frame joint-detection;
Situation 3: first radio frames belongs to same one-period, second to the 4th radio frames belongs to same one-period, first radio frames and back three radio frames belong to different cycles, and namely previous 10ms data belong to the previous 40ms cycle, and back three 10ms data belong to a back 40ms cycle; In this case can be with second and third, four radio frames carry out joint-detection; Wherein, can be with reference to abovementioned steps 306 to the step of three frame joint-detection;
Situation 4: first to fourth radio frames all belongs to same one-period, and namely four 10ms data all belong to the same 40ms cycle; First to fourth radio frames can be carried out joint-detection in this case;
At above-mentioned four kinds of situations, step 308 can specifically comprise:
01) from the 4th radio frames, extracts the data of PBCH correspondence;
02) described the 4th radio frames carried out independently PBCH detection, if detect Physical Broadcast Channel information, finish current detection; Otherwise, execution in step 03);
Need to prove, if detect Physical Broadcast Channel information, can judge further that then described first, second, and third radio frames and the 4th radio frames belong to different cycles;
03) described the 3rd, the 4th radio frames is carried out joint-detection, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 04);
Need to prove, when the 3rd, the 4th radio frames is carried out joint-detection, if detect Physical Broadcast Channel information, can judge further that then described the 3rd, the 4th radio frames belongs to same one-period, and described the 3rd, the 4th radio frames and first and second radio frames belong to different cycles;
04) described second, third carried out joint-detection with the 4th radio frames, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 05);
Need to prove, when second, third and the 4th radio frames are carried out joint-detection, if detect Physical Broadcast Channel information, can judge further that then described second, third and the 4th radio frames belong to same one-period, and described second, third, the 4th radio frames and first radio frames belong to different cycles; If detect Physical Broadcast Channel information, can judge further that then described first to fourth radio frames belongs to same one-period;
05) the described first, second, third and the 4th radio frames is carried out joint-detection.The method of four frames being carried out joint-detection is consistent with conventional detection, gives unnecessary details no longer in detail, if do not detect PBCH information, then execution in step 309;
Step 309 regathers a radio frames (10ms data), simultaneously initial 10ms data in the old data is lost, and forms 1 new 40ms data.The detection of repeating step 308.This process cycle is reciprocal, till detecting PBCH.This step is consistent with conventional detection, gives unnecessary details no longer in detail.
As seen, use the method that the embodiment of the invention provides, when data deficiencies 40ms, travel through parsing by the diverse location that data is placed on PBCH Buffer, can obtain required PBCH information, generally 10ms can detect PBCH information, has dwindled the detection time delay greatly, for other business operations such as UE access, switching etc. provide guarantee.
The embodiment of the invention also provides a kind of detection Physical Broadcast Channel device, referring to Fig. 7, specifically comprises:
Detecting unit 702 is used for that described first wireless frame data is carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
If do not detect Physical Broadcast Channel information by described first radio frames, then
Described collector unit 701 also is used for collecting second wireless frame data;
Described detecting unit 702 is used for that also described first and second wireless frame data are carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
If do not detect Physical Broadcast Channel information by described first and second radio frames, then
Described collector unit 701 also is used for collecting the 3rd wireless frame data;
Described detecting unit 702 is used for that also described first, second, and third wireless frame data carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
If do not detect Physical Broadcast Channel information by described first, second, and third radio frames, then
Described collector unit 701 also is used for collecting the 4th wireless frame data;
Described detecting unit 702 is used for that also described first to fourth wireless frame data carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
Described detecting unit 702 comprises:
Internal storage location, for the data of storage PBCH correspondence, described internal storage location comprises the 0th part, part 1, part 2 and the 3rd part;
The first data extract subelement is for the data that extract the PBCH correspondence from described first wireless frame data;
The one PBCH detection sub-unit for the 0th part of the data of the described PBCH correspondence that extracts being put into the PBCH internal memory, with its excess-three part zero setting, is carried out PBCH and is detected, if detect Physical Broadcast Channel information, then finishes.
Wherein, a described PBCH detection sub-unit, also be used for after the 0th part does not detect Physical Broadcast Channel information, the data of the described PBCH correspondence that extracts are put into the part 1 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the part 2 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the 3rd part of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish.
Wherein, described detecting unit 702 can also comprise:
The second data extract subelement in the time of can't detecting Physical Broadcast Channel information for the data that extract the PBCH correspondence from described first wireless frame data, extracts the data of PBCH correspondence from second radio frames;
A described PBCH subelement, PBCH detects also to be used for carrying out independently to described second radio frames, if detect Physical Broadcast Channel information, then finishes current detection;
The 2nd PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described second radio frames, and when not detecting Physical Broadcast Channel information, described first and second radio frames are carried out joint-detection: the data of the described PBCH correspondence that extracts are put into the 0th of PBCH internal memory, 1 part, with all the other two parts zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the 1st of PBCH internal memory, 2 parts with all the other two parts zero setting, are carried out PBCH and are detected, if detect Physical Broadcast Channel information, then finish, otherwise execution in step is put into the 2nd of PBCH internal memory with the data of the described PBCH correspondence that extracts, 3 parts, with all the other two parts zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish.
Wherein, described detecting unit 702 can also comprise:
The 3rd data extract subelement in the time of can't detecting Physical Broadcast Channel information for the data that extract the PBCH correspondence from described first and second wireless frame data, extracts the data of PBCH correspondence from the 3rd radio frames;
A described PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 3rd radio frames, if detect Physical Broadcast Channel information, then finishes current detection;
Described the 2nd PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 3rd radio frames, and can't detect Physical Broadcast Channel information the time, the PBCH that described second and third radio frames is united detects, if detect Physical Broadcast Channel information, then finish current detection; Otherwise judge that described first to the 3rd radio frames all belongs to same one-period;
The 3rd PBCH detection sub-unit, be used for to described second, three PBCH detections that radio frames is united, and in the time of can't detecting Physical Broadcast Channel information, to described first, two, three PBCH detections that radio frames is united: the data of the described PBCH correspondence that extracts are put into the 0th of PBCH internal memory, 1,2 parts, with remainder zero setting, carrying out PBCH detects, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the 1st of PBCH internal memory, 2,3 parts, with remainder zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish.
Wherein, described detecting unit 702 can also comprise:
The 4th data extract subelement, the PBCH that is used for described first, second and third radio frames is united detects, and can't detect Physical Broadcast Channel information the time, extracts the data of PBCH correspondence from the 4th radio frames;
A described PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 4th radio frames, if detect Physical Broadcast Channel information, then finishes current detection;
The 2nd PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 4th radio frames, and can't detect Physical Broadcast Channel information the time, described the 3rd, the 4th radio frames is carried out joint-detection, if detect Physical Broadcast Channel information, then finish current detection;
The 3rd PBCH detection sub-unit, be used for described the 3rd, the 4th radio frames is carried out joint-detection, and can't detect Physical Broadcast Channel information the time, described second, third and the 4th radio frames are carried out joint-detection, if detect Physical Broadcast Channel information, then finish current detection;
The 4th PBCH detection sub-unit is used for described second, third and the 4th radio frames are carried out joint-detection, and when not detecting Physical Broadcast Channel information, the described first, second, third and the 4th radio frames is carried out joint-detection.
Use the device that the embodiment of the invention provides, when data deficiencies 40ms, travel through parsing by the diverse location that data is placed on PBCH Buffer, can obtain required PBCH information, generally 10ms can detect PBCH information, dwindled the detection time delay greatly, for other business operations such as UE access, switching etc. provide guarantee.
For device embodiment, because it is substantially similar in appearance to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the said method execution mode is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, here alleged storage medium, as: ROM/RAM, magnetic disc, CD etc.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (16)
1. one kind is detected the Physical Broadcast Channel method, it is characterized in that, comprising:
Collect first wireless frame data;
Described first wireless frame data is carried out Physical Broadcast Channel PBCH detects, comprising: described first radio frames is carried out independently PBCH detection, specifically comprise:
I) distribute the PBCH internal memory, described internal memory comprises the 0th part, part 1, part 2 and the 3rd part;
Ii) from described first wireless frame data, extract the data of PBCH correspondence;
Iii) with step I i) described in the data of the PBCH correspondence that extracts put into the 0th part of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect;
If detect Physical Broadcast Channel information, then finish current detection.
2. method according to claim 1 is characterized in that, if do not detect Physical Broadcast Channel information by described first radio frames, then described method also comprises:
Collect second wireless frame data;
Described first and second wireless frame data are carried out PBCH to be detected;
If detect Physical Broadcast Channel information, then finish current detection.
3. method according to claim 2 is characterized in that, if do not detect Physical Broadcast Channel information by described first and second radio frames, then described method also comprises:
Collect the 3rd wireless frame data;
Described first, second, and third wireless frame data carried out PBCH to be detected;
If detect Physical Broadcast Channel information, then finish current detection.
4. method according to claim 3 is characterized in that, if do not detect Physical Broadcast Channel information by described first, second, and third radio frames, then described method also comprises:
Collect the 4th wireless frame data;
Described first to fourth wireless frame data carried out PBCH to be detected;
If detect Physical Broadcast Channel information, then finish current detection.
5. according to any described method in the claim 1 to 4, it is characterized in that if do not detect Physical Broadcast Channel information, the step of described first wireless frame data being carried out the PBCH detection also comprises:
Iv) with step I i) described in the data of the PBCH correspondence that extracts put into the part 1 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step v);
V) with step I i) described in the data of the PBCH correspondence that extracts put into the part 2 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step vi);
Vi) with step I i) described in the data of the PBCH correspondence that extracts put into the 3rd part of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise collect the information of second wireless frame data.
6. method according to claim 2 is characterized in that, the step of described first and second wireless frame data being carried out the PBCH detection comprises:
01) from second radio frames, extracts the data of PBCH correspondence;
02) described second radio frames carried out independently PBCH detection, if detect Physical Broadcast Channel information, finish current detection; Otherwise, execution in step 03);
03) described first and second radio frames are carried out joint-detection, described joint-detection specifically may further comprise the steps:
I) data of the PBCH correspondence that will extract from two radio frames are put into the 0th, 1 part of PBCH internal memory, with all the other two parts zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step ii);
Ii) the data of the described PBCH correspondence that extracts are put into the 1st, 2 parts of PBCH internal memory, with all the other two parts zero setting, carried out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step iii);
Iii) the data of the described PBCH correspondence that extracts are put into the 2nd, 3 parts of PBCH internal memory, with all the other two parts zero setting, carried out the PBCH detection, if detect Physical Broadcast Channel information, then finish, otherwise collect the information of the 3rd wireless frame data.
7. method according to claim 3 is characterized in that, the step of described first, second, and third wireless frame data being carried out the PBCH detection comprises:
01) from the 3rd radio frames, extracts the data of PBCH correspondence;
02) described the 3rd radio frames carried out independently PBCH detection, if detect Physical Broadcast Channel information, finish current detection; Otherwise, execution in step 03);
03) PBCH that described second and third radio frames is united detects, if detect Physical Broadcast Channel information, finishes current detection; Otherwise execution in step 04);
04) described first, second, and third radio frames carried out joint-detection, described joint-detection specifically may further comprise the steps:
I) data of the PBCH correspondence that will extract from three radio frames are put into the 0th, 1,2 parts of PBCH internal memory, with remainder zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise execution in step ii);
Ii) the data of the PBCH correspondence that extracts are put into the 1st, 2,3 parts of PBCH internal memory, with remainder zero setting, carried out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise collect the information of the 4th wireless frame data.
8. method according to claim 4 is characterized in that, the step of described first to fourth wireless frame data being carried out the PBCH detection comprises:
01) from the 4th radio frames, extracts the data of PBCH correspondence;
02) described the 4th radio frames carried out independently PBCH detection, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 03);
03) described the 3rd, the 4th radio frames is carried out joint-detection, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 04);
04) described second, third carried out joint-detection with the 4th radio frames, if detect Physical Broadcast Channel information, then finish current detection; Otherwise, execution in step 05);
05) the described first, second, third and the 4th radio frames is carried out joint-detection.
9. one kind is detected the Physical Broadcast Channel device, it is characterized in that, comprising:
Collector unit is used for collecting first wireless frame data;
Detecting unit is used for that described first wireless frame data is carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection, and described detecting unit comprises:
Internal storage location, for the data of storage PBCH correspondence, described internal storage location comprises the 0th part, part 1, part 2 and the 3rd part;
The first data extract subelement is for the data that extract the PBCH correspondence from described first wireless frame data;
The one PBCH detection sub-unit for the 0th part of the data of the described PBCH correspondence that extracts being put into the PBCH internal memory, with its excess-three part zero setting, is carried out PBCH and is detected, if detect Physical Broadcast Channel information, then finishes.
10. device according to claim 9 is characterized in that, if do not detect Physical Broadcast Channel information by described first radio frames, then
Described collector unit also is used for collecting second wireless frame data;
Described detecting unit is used for that also described first and second wireless frame data are carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
11. device according to claim 10 is characterized in that, if do not detect Physical Broadcast Channel information by described first and second radio frames, then
Described collector unit also is used for collecting the 3rd wireless frame data;
Described detecting unit is used for that also described first, second, and third wireless frame data carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
12. device according to claim 11 is characterized in that, if do not detect Physical Broadcast Channel information by described first, second, and third radio frames, then
Described collector unit also is used for collecting the 4th wireless frame data;
Described detecting unit is used for that also described first to fourth wireless frame data carried out PBCH and detects, if detect Physical Broadcast Channel information, then finishes current detection.
13. according to any described device of claim 9-12, it is characterized in that,
A described PBCH detection sub-unit, also be used for after the 0th part does not detect Physical Broadcast Channel information, the data of the described PBCH correspondence that extracts are put into the part 1 of PBCH internal memory, with its excess-three part zero setting, carrying out PBCH detects, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the part 2 of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the 3rd part of PBCH internal memory, with its excess-three part zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish.
14. device according to claim 13 is characterized in that, described detecting unit also comprises:
The second data extract subelement in the time of can't detecting Physical Broadcast Channel information for the data that extract the PBCH correspondence from described first wireless frame data, extracts the data of PBCH correspondence from second radio frames;
A described PBCH subelement, PBCH detects also to be used for carrying out independently to described second radio frames, if detect Physical Broadcast Channel information, then finishes current detection;
The 2nd PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described second radio frames, and when not detecting Physical Broadcast Channel information, described first and second radio frames are carried out joint-detection: the data that will extract the PBCH correspondence from first radio frames and second radio frames are put into the 0th of PBCH internal memory, 1 part, with all the other two parts zero setting, carrying out PBCH detects, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the 1st of PBCH internal memory, 2 parts with all the other two parts zero setting, are carried out PBCH and are detected, if detect Physical Broadcast Channel information, then finish, otherwise execution in step is put into the 2nd of PBCH internal memory with the data of the described PBCH correspondence that extracts, 3 parts, with all the other two parts zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish.
15. device according to claim 14 is characterized in that, described detecting unit also comprises:
The 3rd data extract subelement in the time of can't detecting Physical Broadcast Channel information for the data that extract the PBCH correspondence from described first and second wireless frame data, extracts the data of PBCH correspondence from the 3rd radio frames;
A described PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 3rd radio frames, if detect Physical Broadcast Channel information, then finishes current detection;
Described the 2nd PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 3rd radio frames, and can't detect Physical Broadcast Channel information the time, the PBCH that described second and third radio frames is united detects, if detect Physical Broadcast Channel information, then finish current detection; Otherwise judge that described first to the 3rd radio frames all belongs to same one-period;
The 3rd PBCH detection sub-unit, be used for to described second, three PBCH detections that radio frames is united, and in the time of can't detecting Physical Broadcast Channel information, to described first, two, three PBCH detections that radio frames is united: will be from first radio frames, the data that extract the PBCH correspondence in the 3rd radio frames of second radio frames are put into the 0th of PBCH internal memory, 1,2 parts, with remainder zero setting, carrying out PBCH detects, if detect Physical Broadcast Channel information, then finish, otherwise, the data of the described PBCH correspondence that extracts are put into the 1st of PBCH internal memory, 2,3 parts, with remainder zero setting, carry out PBCH and detect, if detect Physical Broadcast Channel information, then finish.
16. device according to claim 15 is characterized in that, described detecting unit also comprises:
The 4th data extract subelement, the PBCH that is used for described first, second and third radio frames is united detects, and can't detect Physical Broadcast Channel information the time, extracts the data of PBCH correspondence from the 4th radio frames;
A described PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 4th radio frames, if detect Physical Broadcast Channel information, then finishes current detection;
The 2nd PBCH detection sub-unit, PBCH detects to be used for carrying out independently to described the 4th radio frames, and can't detect Physical Broadcast Channel information the time, described the 3rd, the 4th radio frames is carried out joint-detection, if detect Physical Broadcast Channel information, then finish current detection;
The 3rd PBCH detection sub-unit, be used for described the 3rd, the 4th radio frames is carried out joint-detection, and can't detect Physical Broadcast Channel information the time, described second, third and the 4th radio frames are carried out joint-detection, if detect Physical Broadcast Channel information, then finish current detection;
The 4th PBCH detection sub-unit is used for described second, third and the 4th radio frames are carried out joint-detection, and when not detecting Physical Broadcast Channel information, the described first, second, third and the 4th radio frames is carried out joint-detection.
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| CN103944699A (en) * | 2013-01-18 | 2014-07-23 | 中兴通讯股份有限公司 | System frame number information transmission method, device and system |
| CN103944663B (en) * | 2013-01-18 | 2017-11-14 | 电信科学技术研究院 | A kind of enhancing PBCH transmission method and device |
| US11122520B2 (en) * | 2013-09-18 | 2021-09-14 | Qualcomm Incorporated | Coverage enhancements for physical broadcast channel (PBCH) |
| CN104519455B (en) * | 2013-09-27 | 2018-03-27 | 电信科学技术研究院 | A kind of transmission PBCH method, system and equipment |
| CN109429567B (en) * | 2017-06-16 | 2021-10-15 | 北京小米移动软件有限公司 | Signal transmission method and signal transmission device |
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