CN109756947A - The received method of PBCH, terminal, electronic equipment and storage medium - Google Patents
The received method of PBCH, terminal, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of received method of PBCH, terminal, electronic equipment and storage medium.The method includes terminal receive a subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set, NComb is to merge number used in demodulating process；For NComb subgroup, determine the corresponding scrambling code of each subgroup, obtain NComb scrambling code set, scrambling code set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., { M-NComb+1 .., M }；It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is the subgroup number that a TTI includes；Using k-th of scrambling code set to NComb sub- group demodulations, demodulation result is obtained；If demodulation result is that successfully, terminal obtains the information of cell.The method is just demodulated after receiving a subgroup by terminal, rather than until terminal receives all subgroups of a TTI, if intermediate certain merges under number, demodulation is correct, obtains the information of cell, can shorten the time of terminal networking.
Description
Technical field
The present embodiments relate to a kind of field of communication technology, the received method of especially a kind of PBCH, terminal, electronics are set
Standby and storage medium.
Background technique
Terminal (User Equipment, user equipment) is moved to a certain cell, and the process for accessing the network of the cell claims
For the process of networking, the process of networking need to obtain the information of cell.
The mode for obtaining the information of cell is to monitor the broadcast of cell, i.e. PBCH (the Physical of terminal reception cell
Broadcast channel, Physical Broadcast Channel) signal.
The mode of the signal of the terminal reception PBCH of prior art offer is provided.
In a communications system, the time is usually divided into TTI (Transmission Time Interval, transmission time
Interval), a TTI includes at least one radio frames.
Fig. 1 is the TTI schematic diagram of the PBCH of the prior art.
As shown in Figure 1, by taking the multi-sub-band system of the prior art as an example, multi-sub-band system select several physics subbands as
Broadcasting sub-band.The TTI of each broadcasting sub-band points are M subgroup, and each subgroup has respective number, each subgroup point according to timing
For N number of radio frames.I.e. a TTI includes M*N radio frames.
Wherein, adaptability is transmitted after base station is scrambled the information of cell using scrambling code (Scrambling).It is same
Information contained by each subgroup of TTI is identical, but the scrambling code used is different.
It should be noted that terminal carries out blind examination on PBCH at this time, terminal receives some radio frames, can determine
The corresponding subgroup of the radio frames, but can not determine the number of the subgroup, the corresponding TTI of the subgroup is not known yet.
Terminal in advance known to each subgroup include radio frames quantity it is N number of, a TTI includes M subgroup, i.e. a TTI
Including M*N radio frames, after obtaining total M*N radio frames, uniformly demodulated, if demodulating the information for successfully obtaining cell,
If mistake, update and receive the trial of signal progress next time, search is adjudicated several times with the state for completing this broadcasting sub-band.
It is understood that setting subgroup number as 8, the radio frames that subgroup includes are 16, then it is total need to receive 8 subgroups for terminal
It after 128 radio frames, then is uniformly demodulated, can just obtain the information of cell, then the process that terminal networks will at least expend
The duration of 128 radio frames, thereby resulting in terminal, to enter net spee integrally excessively slow.
Currently, there are no corresponding methods in the prior art to solve the above problems.
Summary of the invention
In view of the drawbacks of the prior art, the embodiment of the present invention provide a kind of received method of PBCH, terminal, electronic equipment and
Storage medium.
On the one hand, the embodiment of the present invention provides a kind of received method of PBCH, which comprises
Step 1, terminal receive a subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set,
NComb is to merge number used in demodulating process, and the signal of the subgroup includes the information of cell；
Step 2 is directed to NComb subgroup, determines the corresponding scrambling code of each subgroup, obtains NComb scrambling code set, described
Scrambling code set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., M-NComb+1 ..,
M}；It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is the subgroup number that a TTI includes；
Step 3, using k-th of scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 4, demodulation result are that successfully, terminal obtains the information of the cell.
On the other hand, the embodiment of the present invention provides a kind of terminal, and the terminal includes:
Receiving module, for receiving the signal of a subgroup, and with preceding NComb-1 subgroup, form NComb subgroup collection
It closes, NComb is to merge number used in demodulating process, and the signal of the subgroup includes the information of cell；
Determining module determines the corresponding scrambling code of each subgroup, obtains NComb scrambling code collection for being directed to NComb subgroup
Close, the scrambling code set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., { M-
NComb+1,..,M}；It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is a TTI packet
The subgroup number included；
Demodulation module, for, to NComb sub- group demodulations, obtaining demodulation result using k-th of scrambling code set；
Module is obtained, if being that successfully, terminal obtains the information of the cell for demodulation result.
On the other hand, the embodiment of the present invention also provides a kind of electronic equipment, including memory, processor, bus and deposits
The computer program that can be run on a memory and on a processor is stored up, the processor is realized when executing described program with top
The step of method.
On the other hand, the embodiment of the present invention also provides a kind of storage medium, is stored thereon with computer program, described program
The step of method as above is realized when being executed by processor.
As shown from the above technical solution, it the received method of PBCH provided in an embodiment of the present invention, terminal, electronic equipment and deposits
Storage media, the method are just demodulated after receiving a subgroup by terminal, rather than until terminal receives a TTI
All subgroups obtain the information of cell if intermediate certain merges and demodulates correct under number, can shorten terminal networking when
Between.
Detailed description of the invention
Fig. 1 is the TTI schematic diagram of the PBCH of the prior art；
Fig. 2 is a kind of flow diagram of the received method of PBCH provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram for terminal that further embodiment of this invention provides；
Fig. 4 is the structural schematic diagram for a kind of electronic equipment that further embodiment of this invention provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
Embodiment a part of the embodiment, instead of all the embodiments.
Fig. 2 shows a kind of flow diagrams of the received method of PBCH provided in an embodiment of the present invention.
As shown in Fig. 2, method provided in an embodiment of the present invention specifically includes the following steps:
Step 1, terminal receive a subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set,
NComb is to merge number used in demodulating process；
Optionally, base station is broadcasted on Physical Broadcast Channel PBCH, broadcasts the signal of subgroup.
Optionally, the received method of the PBCH of the embodiment of the present invention is realized at the terminal, specifically, in the physical layer of terminal
It realizes.
Optionally, terminal is moved to the cell and carries out blind examination to PBCH, receives the signal of a subgroup.
The signal of first subgroup includes the radio frames of scheduled quantity, and correspondingly, the terminal receives physical broadcast
The step of signal of first subgroup of channel specifically:
The position of terminal searching synchronization frame；
Behind the position for determining search synchronization frame, the continuous number for receiving radio frames reaches the scheduled quantity, obtains the
The signal of one subgroup.
Optionally, it is first to carry out frame synchronization that terminal, which receives the mode of a subgroup, to determine the initial position of subgroup.
Optionally, in order to properly separate each road signal, the signal for the subgroup that base station is sent includes the start mark of subgroup:
Synchronization frame, terminal searching synchronization frame, to determine the initial position of subgroup.It include radio frames since terminal can predefine subgroup
Quantity is N number of, after terminal searching determines the position of synchronization frame, continuously receives N-1 radio frames, it is ensured that obtain after the synchronization frame
Whole radio frames of one subgroup.
For example, a subgroup includes 16 radio frames, is 1-15's including synchronization frame (the 0th frame) and other numbers
Radio frames after terminal searching obtains synchronization frame, are determined as the 0th frame of a certain subgroup, the 1-15 after continuously receiving the 0th frame
0-15 frame is formed a subgroup by frame.
For example, terminal receives the signal of the first subgroup of Physical Broadcast Channel, and the signal of first subgroup is eventually
The signal of received first subgroup on Physical Broadcast Channel is held, the signal of first subgroup includes the information of cell；
Step 2 is directed to NComb subgroup, determines the corresponding scrambling code of each subgroup, obtains NComb scrambling code set, described
Scrambling code set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., M-NComb+1 ..,
M}；It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is the subgroup number that a TTI includes；
Step 3, using k-th of scrambling code set to NComb sub- group demodulations, obtain demodulation result；
It is illustrated for receiving a subgroup, by the signal of first subgroup received on PBCH, referred to as first
The signal of subgroup.
Determine that the corresponding scrambling code group of first subgroup, the scrambling code group include multiple scrambling codes, each scrambling code is one corresponding
A subgroup of TTI, the number of the scrambling code are identical as the sum of the subgroup of a TTI；
Optionally, one TTI points are multiple subgroups, and each subgroup has respective number according to timing, and the same TTI's is each
Information contained by subgroup is identical, and each subgroup includes the radio frames of identical quantity.Terminal can not determine the first subgroup in TTI
Number, that is, not knowing received first subgroup is subgroup 0 or subgroup 1 or other subgroups.
Optionally, terminal can predefine the sum of the subgroup of a TTI, and terminal is directed to the first subgroup, generate corresponding institute
The scrambling code group of the first subgroup is stated, the scrambling code group includes multiple scrambling codes, and the number of scrambling code is equal to the sum for the subgroup that TTI includes.
Optionally, a TTI includes M subgroup, and corresponding 1 scrambling code of each subgroup, i.e. one TTI of predictably terminal imagination includes son
Group 0, subgroup 1 ..., subgroup M-1, it is assumed that the first subgroup be subgroup 0, subgroup 1 ... subgroup M-1, and respectively generate son
Group 0, subgroup 1 ... the corresponding scrambling code of subgroup M-1.That is, being directed to the first subgroup, corresponding M of the first subgroup of prediction is disturbed
Code, using M scrambling code as the scrambling code group.
Optionally, scrambling code is that terminal is locally generated according to scrambling code information, determines, has when scrambling code information is terminal unit contractual
There is the information of uniqueness.
Optionally, mode according to prior art generates the corresponding scrambling code of first subgroup according to scrambling code information, from
And obtain scrambling code group.
It should be noted that assume that terminal is in the situation farthest apart from base station in the prior art, so signal is weaker, because
This terminal is provided according to agreement, receives enough subgroups, then merges verification, decodes terminal correctly as far as possible.Cause
This terminal network process be receive a TTI all subgroups after, demodulated, then terminal to wait a TTI when
It is long, it could network.
And in practical application, terminal is had just enter into a cell, not necessarily far apart from base station, potential range base station compared with
Closely.If terminal is not at the position farthest apart from base station, also using all subgroups for receiving a TTI, the technology of re-demodulation
The process that means, the actually terminal network takes unnecessary duration.
In the embodiment of the present invention, terminal network process be receive a TTI a subgroup after i.e. trial demodulated,
Obtain demodulation result.
There are many modes for obtaining demodulation result in the method in step 3, and the present embodiment is carried out by taking one of which as an example
Explanation.
The step 3 specifically includes；
NComb subgroup is descrambled using k-th of scrambling code set, obtains descramble signal；
Rate-matched, decoding and CRC check are carried out to descramble signal, the check results of CRC are demodulation result.
If step 4, demodulation result are that successfully, terminal obtains the information of the cell.
Optionally, after the information for obtaining cell, terminal is completed to network, and carries out subsequent business transmission in the cell.
If terminal is closer apart from base station, signal is preferable, then demodulation result is likely to success, then terminal simply waits for one
The duration of subgroup can network, so as to shorten the time of terminal networking.
If farther out apart from base station, signal is weaker for terminal, then demodulation result is likely to failure, then by the letter of first subgroup
It number is cached, is demodulated again so as to subsequent.
The received method of PBCH provided in this embodiment is just demodulated after receiving a subgroup by terminal, rather than
Until terminal receives all subgroups of a TTI, if intermediate certain merges under number, demodulation is correct, obtains the letter of cell
Breath can shorten the time of terminal networking.
On the basis of the above embodiments, the received method of PBCH provided in an embodiment of the present invention, which comprises
If demodulation result is failure, the method also includes:
If step 5, k≤M-NComb+1, k=k+1, using+1 scrambling code set of kth to NComb sub- group demodulations, obtain
To demodulation result.
The signal of first subgroup is demodulated respectively using each scrambling code, obtains corresponding demodulation result；
After determining scrambling code group, each scrambling code of the scrambling code group is traversed, each scrambling code is respectively adopted to described first
The signal of subgroup is demodulated.
If demodulation result is successfully, to stop demodulating.
Other steps of the embodiment of the present invention are similar to above-mentioned steps, and this embodiment is not repeated.
The received method of PBCH provided in this embodiment, traverses each scrambling code by terminal and is demodulated, can shorten the terminal
The time of networking.
On the basis of the above embodiments, the received method of PBCH provided in an embodiment of the present invention, which comprises
If the demodulation result is failure, the method also includes:
Step 6, initialization subgroup update times j=1；
If step 7, k > M-NComb+1, receive 1 subgroup, and with preceding NComb-1 subgroup, form NComb subgroup collection
It closes, received extra subgroup will cache before to local；
Step 8 is directed to NComb subgroup, has carried out subgroup update, it assumes that subgroup collection is combined into the starting subgroup of 1 TTI
Set, then scrambling code collection is combined into { 0,1 .., NComb-1 }；
Step 9, using the scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 10, demodulation result are that successfully, terminal obtains the information of the cell.
As previously mentioned, being directed to received first subgroup, after traversing each scrambling code, the result of verification is still decoding error
When, the first subgroup is cached to local.
Optionally, terminal is descrambled from after received first subgroup in base station, completes rate-matched, decoding and CRC check
Afterwards, check results are obtained.
Since terminal memory headroom is limited, the first subgroup of subgroup set is that terminal is original, received from base station herein
First subgroup, the data that in-between process generates not save.
Optionally, during terminal blind examination PBCH, subgroup is persistently received, i.e., to the first subgroup after receiving the first subgroup
During being demodulated, next subgroup is persistently received, is decoded again for subsequent.Will after the first subgroup institute it is received
Next subgroup, referred to as the second subgroup.
Since the demodulation of the first subgroup fails, number of first subgroup in TTI can not be determined, similarly, terminal can not
The number for determining the second subgroup, since the first subgroup and the second subgroup are that terminal is continuously received and obtained, then the first subgroup and
The number of second subgroup be it is continuous, the timing of the first subgroup and the second subgroup is the first subgroup preceding, and the second subgroup is rear.
For merging number=2, then there is a subgroup combination, be the signal of the first subgroup Yu the second subgroup, then compiling
Number may there are M-1 kind situation: (0,1), (1,2), (2,3), (3,4), (4,5), (5,6), (6,7).Wherein, (0,1) indicates the
Number of the signal of one subgroup in TTI is subgroup 0, and number of the signal of the second subgroup in same TTI is subgroup 1.
The signal of the first subgroup for including is combined for a subgroup respectively and the signal of the second subgroup is demodulated.
If the second demodulation result is failure after traversing all subgroup combinations, by the signal and the second subgroup of first subgroup
Signal caching, be decoded again so as to subsequent.
In embodiments of the present invention two subgroups are joined together to demodulate, compared to the prior art combines all subgroups
Demodulate, equally can increasing terminal access speed.
The corresponding TTI of the received next subgroup of terminal there are two kinds may: one is corresponding with the first subgroup same
TTI, it is different TTI that another kind, which is corresponding from the first subgroup,.
If traversing the second demodulation result after all subgroup combinations is failure, indicate that first subgroup and the second subgroup may
The signal of the subgroup of not same TTI, the signal of two subgroups across TTI.
And for such situation, the subgroup combination are as follows: (7,0).First subgroup is the subgroup 7 of a TTI, described
Second subgroup is the subgroup 0 of latter TTI.
Optionally, subgroup combination is not demodulated for the combination since predictable demodulation result is failure.
If demodulation result is failure, the method also includes:
Subgroup update times j=j+1 executes step 7-9 if j < NComb-1.
If j >=NComb-1, merges number and update NComb=NComb+1, if NComb≤merging number upper limit, holds
Row step 1.
Other steps of the embodiment of the present invention are similar to above-mentioned steps, and this embodiment is not repeated.
The case where received method of PBCH provided in this embodiment by the subgroup set for rationally estimating before this is across TTI,
It can more fully be demodulated.
On the basis of the above embodiments, the received method of PBCH provided in an embodiment of the present invention, which comprises
If demodulation result is failure, the method also includes:
Subgroup update times j=j+1 executes step 7 if j < NComb-1.
Other steps of the embodiment of the present invention are similar to above-mentioned steps, and this embodiment is not repeated.
The received method of PBCH provided in this embodiment merges the noise of signal after merging to multiple signals
Than being promoted, the success rate of demodulation is improved.
On the basis of the above embodiments, the received method of PBCH provided in an embodiment of the present invention, if the second demodulation result
To fail, the method also includes:
If j >=NComb-1, merges number and update NComb=NComb+1, if NComb≤merging number upper limit, holds
Row step 1.
If check results decoding error, combined for next subgroup, then the step of being descrambled, decoded, being verified.
If traversing the demodulation result that the subgroup combines is failure, the signal merely with two subgroups, nothing are indicated
Method demodulates successfully, then merges number update, until receiving all subgroups of a TTI.
Illustrated for merging number=3, the signal of first subgroup and the signal caching of the second subgroup, with third
The signal of group (2+1) forms subgroup set, and the signal of the third subgroup is terminal received the after the signal of the second subgroup
The signal of one subgroup.
For a subgroup can not it is successfully decoded may be relatively low due to noise.Correspondingly, the signal-to-noise ratio of next subgroup can
Can be also it is comparable, also can not individually complete to decode.
Multiple signals are merged, obtain merging signal；Signal merging is a kind of signal modulation means of prior art,
After multiple Low SNR signals of input are added, merge output, to promote signal-to-noise ratio.
Optionally, for each combination, a merging signal can be obtained.Information invariability after merging merges the noise of signal
It is promoted than, therefore successfully decoded probability increases.
The merging signal is decoded, demodulation result success.
Other steps of the embodiment of the present invention are similar to above-mentioned steps, and this embodiment is not repeated.
The received method of PBCH provided in this embodiment, by preceding M subgroup is descrambled, and will obtained respectively two
A descramble signal merges, and improves the signal-to-noise ratio for merging signal, verifies to signal is merged, improves the success of decoding
Rate.
In order to more fully understand technology contents of the invention, on the basis of the above embodiments, the present embodiment is described in detail
The received method of the PBCH of offer.
For prior art problem, the present embodiment proposes a kind of multi-sub-band system Physical Broadcast Channel (PBCH) method of reseptance
And terminal, so that it is variable to merge number.UE uses different merging numbers when networking reception PBCH respectively, in each merging time
Several lower corresponding scrambling code group searchings of progress.
Physical Broadcast Channel (PBCH) method of reseptance is described as follows, table 1 is design parameter allocation list:
It should be noted that merging number used in demodulating process is denoted as NComb, it is up in table 18 times, then
There are 4 kinds of merging numbers, there can be 8 kinds in real process, it is 1 that minimum, which merges number, i.e., 1-8 times.
1. setting NComb=1；
2. receive 1 subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set；
3. corresponding NComb subgroup, NComb scrambling code also form set, possible scrambling code set has: 0,1 ..,
NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., { 7-NComb+1 .., 7 }, can by number be k=0,
1,…,7-NComb+1.K=0 is initialized, is handled as follows later:
A) NComb subgroup is sequentially descrambled using k-th of scrambling code set；
B) rate-matched, decoding and CRC check are completed after descrambling；
C) it is selected according to CRC check result:
CRC is correct: saving the final value of NComb, calculates frame number, reported result simultaneously exits；
CRC failure: k=k+1 is transferred to step 4 if k > 7-NComb+1；If k≤7-NComb+1, repetition step a)~
c)；
4. initializing subgroup update times j=1；
5. receive 1 subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set, receive before this
Subgroup continue to store, until receiving all subgroup.
The embodiment of the present invention, which merges number when receiving, can be changed, and since minimum merges number (1), successively attempt each merging
Number, by whether correct demodulation makes decisions and exits.The reception scheme can make full use of the geographical location UE difference then to demodulate
The possible different feature of performance reduces in the case where not changing cell coverage area and receives cache-time, accelerates UE and enters network speed
Degree.
Fig. 3 shows a kind of structural schematic diagram of terminal of further embodiment of this invention offer.
Referring to Fig. 3, on the basis of the above embodiments, terminal provided in this embodiment, the terminal includes receiving module
31, determining module 32, demodulation module 33 and acquisition module 34, in which:
Receiving module 31 is used to receive the signal of one subgroup, and with preceding NComb-1 subgroup, NComb subgroup of composition
Set, NComb is to merge number used in demodulating process, and the signal of the subgroup includes the information of cell；Determining module 32
For being directed to NComb subgroup, determines the corresponding scrambling code of each subgroup, obtain NComb scrambling code set, the scrambling code set packet
Include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., { M-NComb+1 .., M }；It will be each
Scrambling code set number is k=0,1 ..., M-NComb+1, initializes k=0, M is the subgroup number that a TTI includes；Demodulation module
33 for, to NComb sub- group demodulations, obtaining demodulation result using k-th of scrambling code set；If obtaining module 34 for demodulating knot
Fruit is that successfully, then terminal obtains the information of the cell.
Terminal provided in this embodiment, can be used for executing the method for above method embodiment, this implementation repeats no more.
Terminal provided in this embodiment is attempted to be demodulated after receiving a subgroup of a TTI by demodulation module,
Demodulation result is obtained, rather than until terminal receives all subgroups of a TTI, if being demodulated under certain intermediate merging number
Correctly, it obtains module and obtains the information of cell, the time of terminal networking can be shortened.
Fig. 4 shows the structural schematic diagram of a kind of electronic equipment of further embodiment of this invention offer.
Refering to Fig. 4, electronic equipment provided in an embodiment of the present invention, the electronic equipment include memory (memory) 41,
Processor (processor) 42, bus 43 and it is stored in the computer program that can be run on memory 41 and on a processor.
Wherein, the memory 41, processor 42 complete mutual communication by the bus 43.
The processor 42 is used to call the program instruction in the memory 41, realizes when executing described program as schemed
2 method.
In another embodiment, following method is realized when the processor executes described program:
Step 1, terminal receive a subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set,
NComb is to merge number used in demodulating process, and the signal of the subgroup includes the information of cell；
Step 2 is directed to NComb subgroup, determines the corresponding scrambling code of each subgroup, obtains NComb scrambling code set, described
Scrambling code set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., M-NComb+1 ..,
M}；It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is the subgroup number that a TTI includes；
Step 3, using k-th of scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 4, demodulation result are that successfully, terminal obtains the information of the cell.
In another embodiment, realize following method when the processor executes described program: the step 3 is specific
Including；
NComb subgroup is descrambled using k-th of scrambling code set, obtains descramble signal；
Rate-matched, decoding and CRC check are carried out to descramble signal, the check results of CRC are demodulation result.
In another embodiment, following method is realized when the processor executes described program: if the demodulation is tied
Fruit is failure, the method also includes:
If step 5, k≤M-NComb+1, k=k+1, using+1 scrambling code set of kth to NComb sub- group demodulations, obtain
To demodulation result.
In another embodiment, following method is realized when the processor executes described program: if demodulation result is
Failure, the method also includes:
Step 6, initialization subgroup update times j=1；
If step 7, k > M-NComb+1, receive 1 subgroup, and with preceding NComb-1 subgroup, form NComb subgroup collection
It closes, received extra subgroup will cache before to local；
Step 8 is directed to NComb subgroup, has carried out subgroup update, it assumes that subgroup collection is combined into the starting subgroup of 1 TTI
Set, then scrambling code collection is combined into { 0,1 .., NComb-1 }；
Step 9, using the scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 10, demodulation result are that successfully, terminal obtains the information of the cell.
In another embodiment, following method is realized when the processor executes described program: if demodulation result is
Failure, the method also includes:
Subgroup update times j=j+1 executes step 7-9 if j < NComb-1.
In another embodiment, following method is realized when the processor executes described program: if j >=NComb-
1, merge number and update NComb=NComb+1, if NComb≤merging number upper limit, executes step 1.
In another embodiment, following method is realized when the processor executes described program: if NComb > merging
The upper limit of number, to protocol layer-reported result.
Electronic equipment provided in this embodiment can be used for executing the corresponding program of method of above method embodiment, this reality
It applies and repeats no more.
Electronic equipment provided in this embodiment realizes that terminal receives a son when executing described program by the processor
It is just demodulated after group, rather than until terminal receives all subgroups of a TTI, if being solved under certain intermediate merging number
Levelling really, then obtains the information of cell, can shorten the time of terminal networking.
A kind of storage medium that further embodiment of this invention provides is stored with computer program on the storage medium, institute
It states and realizes when program is executed by processor such as the step of Fig. 2.
In another embodiment, following method is realized when described program is executed by processor:
The step 3 specifically includes；
NComb subgroup is descrambled using k-th of scrambling code set, obtains descramble signal；
Rate-matched, decoding and CRC check are carried out to descramble signal, the check results of CRC are demodulation result.
In another embodiment, following method is realized when described program is executed by processor:
If the demodulation result is failure, the method also includes:
If step 5, k≤M-NComb+1, k=k+1, using+1 scrambling code set of kth to NComb sub- group demodulations, obtain
To demodulation result.
In another embodiment, following method is realized when described program is executed by processor:
It is characterized by: if demodulation result is failure, the method also includes:
Step 6, initialization subgroup update times j=1；
If step 7, k > M-NComb+1, receive 1 subgroup, and with preceding NComb-1 subgroup, form NComb subgroup collection
It closes, received extra subgroup will cache before to local；
Step 8 is directed to NComb subgroup, has carried out subgroup update, it assumes that subgroup collection is combined into the starting subgroup of 1 TTI
Set, then scrambling code collection is combined into { 0,1 .., NComb-1 }；
Step 9, using the scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 10, demodulation result are that successfully, terminal obtains the information of the cell.
In another embodiment, following method is realized when described program is executed by processor:
If demodulation result is failure, the method also includes:
Subgroup update times j=j+1 executes step 7-9 if j < NComb-1.
In another embodiment, following method is realized when described program is executed by processor:
If j >=NComb-1, merges number and update NComb=NComb+1, if NComb≤merging number upper limit, holds
Row step 1.
In another embodiment, following method is realized when described program is executed by processor:
If NComb > merging number upper limit, to protocol layer-reported result.
Storage medium provided in this embodiment realizes the side of above method embodiment when described program is executed by processor
Method, this implementation repeat no more.
Storage medium provided in this embodiment realizes that terminal receives a son when executing described program by the processor
It is just demodulated after group, rather than until terminal receives all subgroups of a TTI, if being solved under certain intermediate merging number
Levelling really, then obtains the information of cell, can shorten the time of terminal networking.
It will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments is wrapped
Certain features for including rather than other feature, but the combination of the feature of different embodiments mean in the scope of the present invention it
It is interior and form different embodiments.
It will be understood by those skilled in the art that each step in embodiment can be implemented in hardware, or at one or
The software module run on the multiple processors of person is realized, or is implemented in a combination thereof.Those skilled in the art should manage
Solution, can be used in practice microprocessor or digital signal processor (DSP) to realize according to an embodiment of the present invention one
The some or all functions of a little or whole components.The present invention is also implemented as executing method as described herein
Some or all device or device programs (for example, computer program and computer program product).
Although the embodiments of the invention are described in conjunction with the attached drawings, but those skilled in the art can not depart from this hair
Various modifications and variations are made in the case where bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. a kind of received method of PBCH, which is characterized in that the described method includes:
Step 1, terminal receive a subgroup signal, and with preceding NComb-1 subgroup, composition NComb subgroup set,
NComb is to merge number used in demodulating process, and the signal of the subgroup includes the information of cell；
Step 2 is directed to NComb subgroup, determines the corresponding scrambling code of each subgroup, obtains NComb scrambling code set, the scrambling code
Set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., { M-NComb+1 .., M }；
It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is the subgroup number that a TTI includes；
Step 3, using k-th of scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 4, demodulation result are that successfully, terminal obtains the information of the cell.
2. according to the method described in claim 1, it is characterized by: the step 3 specifically includes；
NComb subgroup is descrambled using k-th of scrambling code set, obtains descramble signal；
Rate-matched, decoding and CRC check are carried out to descramble signal, the check results of CRC are demodulation result.
If 3. according to the method described in claim 2, it is characterized by: the demodulation result be failure, the method also includes:
If step 5, k≤M-NComb+1, k=k+1, using+1 scrambling code set of kth to NComb sub- group demodulations, solved
Adjust result.
4. according to the method described in claim 1, it is characterized by: if demodulation result be failure, the method also includes:
Step 6, initialization subgroup update times j=1；
If step 7, k > M-NComb+1, receive 1 subgroup, and with preceding NComb-1 subgroup, form NComb subgroup set,
It received extra subgroup will cache before to local；
Step 8 is directed to NComb subgroup, has carried out subgroup update, it assumes that subgroup collection is combined into the starting subgroup collection of 1 TTI
It closes, then scrambling code collection is combined into { 0,1 .., NComb-1 }；
Step 9, using the scrambling code set to NComb sub- group demodulations, obtain demodulation result；
If step 10, demodulation result are that successfully, terminal obtains the information of the cell.
5. according to the method described in claim 4, it is characterized by: if demodulation result be failure, the method also includes:
Subgroup update times j=j+1 executes step 7-9 if j < NComb-1.
6. according to the method described in claim 5, it is characterized by: merging number if j >=NComb-1 and updating NComb=
NComb+1 executes step 1 if NComb≤merging number upper limit.
7. according to the method described in claim 6, it is characterized by: if NComb > merging number upper limit, to protocol layer-reported
As a result.
8. a kind of terminal, which is characterized in that the terminal includes:
Receiving module, for receiving the signal of a subgroup, and with preceding NComb-1 subgroup, form NComb subgroup set,
NComb is to merge number used in demodulating process, and the signal of the subgroup includes the information of cell；
Determining module, for determining the corresponding scrambling code of each subgroup, obtaining NComb scrambling code set for NComb subgroup,
The scrambling code set include: { 0,1 .., NComb-1 }, { 1 .., NComb }, { 2 .., NComb+1 } ..., { M-NComb+
1,..,M}；It is k=0,1 ..., M-NComb+1 by each scrambling code set number, initializes k=0, M is the son that a TTI includes
Group number；
Demodulation module, for, to NComb sub- group demodulations, obtaining demodulation result using k-th of scrambling code set；
Module is obtained, if being that successfully, terminal obtains the information of the cell for demodulation result.
9. a kind of electronic equipment, which is characterized in that on a memory and can be including memory, processor, bus and storage
The computer program run on processor, which is characterized in that the processor realizes such as claim 1-7 when executing described program
The step of any one.
10. a kind of storage medium, is stored thereon with computer program, it is characterised in that: real when described program is executed by processor
The now step as described in claim 1-7 any one.
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