CN108391314A

CN108391314A - A kind of the determination method, apparatus and terminal of lead code

Info

Publication number: CN108391314A
Application number: CN201810145966.2A
Authority: CN
Inventors: 李明菊
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2018-08-10
Anticipated expiration: 2038-02-12
Also published as: CN108391314B

Abstract

The embodiment of the invention discloses the determination method, apparatus and terminal of a kind of lead code, wherein method includes：The target downlink synchronizing signal block that base station is sent is obtained, and receives the first quantitative value that the base station is sent, first quantitative value indicates the quantity of the downlink synchronous signal block in a random access chance corresponding to preset lead code；The second quantitative value that the base station is sent is received, second quantitative value is used to indicate the corresponding quantity for sending competition random access lead code entrained when accidental access signal of each downlink synchronous signal block in a random access chance；According to first quantitative value and second quantitative value from the preset lead code, it determines in the random access chance corresponding to the target downlink synchronizing signal block, random access lead code is competed for sending target entrained when accidental access signal corresponding to terminal.It can effectively improve the efficiency that terminal determines random access lead code through the embodiment of the present invention.

Description

A kind of the determination method, apparatus and terminal of lead code

Technical field

The present invention relates to field of communication technology more particularly to the determination method, apparatus and terminal of a kind of lead code.

Background technology

Within a wireless communication network, Physical Random Access Channel (Physical Random Access Channel, PRACH) can be used for from terminal to network request random access.PRACH usually need to carry random access lead code (i.e. Preamble codes), random access lead code is the actual content that terminal is sent in Physical Random Access Channel, for connecing at random The identity of fashionable identification terminal.How terminal is improved in a random access chance (Random Access Channel Occasion, RO) in determine efficiency the problem of being target urgent need to resolve of random access lead code.

Invention content

An embodiment of the present invention provides the determination method, apparatus and terminal of a kind of lead code, and it is true to can effectively improve terminal Determine the efficiency of random access lead code.

First aspect of the embodiment of the present invention provides a kind of determination method of lead code, the method includes：

The target downlink synchronizing signal block that base station is sent is obtained, and receives the first quantitative value that the base station is sent, it is described First quantitative value indicates the quantity of the downlink synchronous signal block corresponding to preset lead code in a random access chance；

The second quantitative value that the base station is sent is received, second quantitative value is used to indicate in a random access chance Each corresponding number for sending competition random access lead code entrained when accidental access signal of downlink synchronous signal block Amount；

According to first quantitative value and second quantitative value from the preset lead code, determine in the target It is entrained when accidental access signal for sending corresponding to terminal in random access chance corresponding to downlink synchronous signal block Target compete random access lead code.

Second aspect of the embodiment of the present invention provides a kind of determining device of lead code, and described device includes：

Acquiring unit, the target downlink synchronizing signal block for obtaining base station transmission；

Receiving unit, the first quantitative value sent for receiving the base station, first quantitative value indicate one at random Access the quantity of the downlink synchronous signal block in chance corresponding to preset lead code；

The receiving unit is additionally operable to receive the second quantitative value that the base station is sent, and second quantitative value is for referring to Show that each downlink synchronous signal block in a random access chance is corresponding entrained competing when accidental access signal for sending Strive the quantity of random access lead code；

Processing unit is used for according to first quantitative value and second quantitative value from the preset lead code, really Make in the random access chance corresponding to the target downlink synchronizing signal block, corresponding to described device for send with Machine accesses target entrained when signal and competes random access lead code.

The third aspect of the embodiment of the present invention provides a kind of terminal, including processor, network interface and memory, described to deposit Reservoir is stored with executable program code, and the network interface is used for messaging, the processing by the control of the processor Device executes the determination method of the lead code described in above-mentioned first aspect for calling the executable program code.

Fourth aspect of the embodiment of the present invention provides a kind of storage medium, instruction is stored in the storage medium, when it When running on computers so that computer executes the determination method of the lead code described in above-mentioned first aspect.

The target downlink synchronizing signal block that the embodiment of the present invention is sent by obtaining base station receives the first number that base station is sent Magnitude, and the second quantitative value of base station transmission is received, then according to the first quantitative value and the second quantitative value from preset lead code, It determines in the random access chance corresponding to target downlink synchronizing signal block, is used to send random access corresponding to terminal Entrained target competes random access lead code when signal, and random access lead code is determined so as to effectively improve terminal Efficiency.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is a kind of flow diagram of the determination method of lead code provided in an embodiment of the present invention；

Fig. 2 is the sub-process figure of step S103 shown in a kind of Fig. 1 provided in an embodiment of the present invention；

Fig. 3 is the sub-process figure of step S103 shown in another kind Fig. 1 provided in an embodiment of the present invention；

Fig. 4 a are a kind of schematic diagrames of random access chance number provided in an embodiment of the present invention；

Fig. 4 b are the schematic diagrames of a kind of random access chance and synchronizing signal block correspondence provided in an embodiment of the present invention；

Fig. 4 c are the signals of another random access chance and synchronizing signal block correspondence provided in an embodiment of the present invention Figure；

Fig. 5 is a kind of structural schematic diagram of the determining device of lead code provided in an embodiment of the present invention；

Fig. 6 is a kind of structural schematic diagram of terminal provided in an embodiment of the present invention.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes.

Terminal described in the embodiment of the present invention can specifically include smart mobile phone, tablet computer, notebook, movement mutually Networked devices (Mobile Internet Device, MID), intelligent wearable device, car-mounted terminal etc..Wherein, random access Lead code includes competition random access lead code and non-competing random access lead code.It is to be used for compete random access lead code Random access Contention Based Random Access, CBRA competition-based) and the lead code that uses, competition are random Access lead code is selected to obtain by terminal from preset lead code, preset lead code be according to related protocol is pre-set can With the multiple random access lead codes used, in this way, multiple terminals may choose the same random access lead code simultaneously, so It is random access lead code competition-based；Non-competing random access lead code is for based on non-competing random access (Contention Free Random Access, CFRA) and the lead code used, non-competing random access lead code usually by Base station is allocated by issuing control signaling to some terminal, in this way, a lead code in this time only for a terminal It is used when random access, so being based on non-competing random access lead code.

Referring to Fig. 1, Fig. 1 is a kind of flow diagram of the determination method of lead code provided in an embodiment of the present invention.This The determination method of lead code described in inventive embodiments, including：

S101, terminal obtain the target downlink synchronizing signal block that base station is sent, and receive the first number that the base station is sent Magnitude.

In the embodiment of the present invention, under the first quantitative value indicates in a random access chance RO corresponding to preset lead code The quantity of line synchronising signal block (Synchronization Signal Block, SSB), the first quantitative value can be 1/8,1/4, 1/2, any one in 1,2,4,8 or 16.Wherein, terminal obtains the specific of the target downlink synchronizing signal block that base station is sent Mode is：Terminal receives at least one downlink synchronous signal block of base station transmission first, then from least one down-going synchronous Determine that signal strength values are greater than or equal to the target downlink synchronizing signal block of preset signal strength threshold value in block.It needs Bright, terminal may receive multiple synchronizing signal blocks, multiple synchronizing signal when receiving the synchronizing signal block that base station is sent Block is that base station is sent at different times；May include that multiple signal strength values are more than default letter in multiple synchronizing signal block The synchronizing signal block of number intensity threshold, but to reduce time delay, terminal selects receive first from multiple synchronizing signal block A signal strength values are greater than or equal to the synchronizing signal block of preset signal strength threshold value as object synchronization block.

S102, the terminal receive the second quantitative value that the base station is sent.

In the embodiment of the present invention, the second quantitative value is used to indicate each downlink synchronous signal in a random access chance RO The corresponding quantity for sending competition random access lead code entrained when accidental access signal of block.Second quantitative value can be with Be base station by remaining system information (Remaining System Information, RMSI) come what is indicated.

Wherein, according to related protocol just like drawing a conclusion：When the first quantitative value is 1/8,1/4,1/2 or 1, i.e., one random It accesses the corresponding Preamble codes of only 1 synchronizing signal block in chance to send, the corresponding Preamble of this synchronizing signal block Code is sent in one or more continuous random access chances；At this point, the second quantitative value can be 4,8,12,16 to 64 in Any one, and the multiple that the second quantitative value is 4, it is up to 64, because in each random access chance, the number of Preamble codes Amount up to 64.When the second quantitative value is 64, indicates that the quantity of the Preamble codes for CBRA is 64, then just do not have Preamble codes for CFRA.When the first quantitative value is 2, i.e. there are 2 synchronizing signal blocks pair in a random access chance The Preamble codes answered are sent；At this point, the second quantitative value can be any one in 4,8,12,16 to 32, and the second quantity Value is 4 multiple, is up to 32；When the second quantitative value is 32, indicate that 2 synchronizing signal blocks all use 64 Preamble codes In CBRA, then just without the Preamble codes for CFRA.When the first quantitative value is 4,8 or 16, i.e. a random access There are the corresponding Preamble codes of multiple (there are 4,8 or 16 in other words) synchronizing signal blocks to send in chance；At this point, the second quantitative value It can be any one in 1,2,3,4 to (64/ first quantitative value), that is to say, when the first quantitative value is 4, the second quantity Value is any one in 1~16；When the first quantitative value is 8, the second quantitative value is any one in 1~8；When the first number When magnitude is 16, the second quantitative value is any one in 1~4.

S103, the terminal according to first quantitative value and second quantitative value from the preset lead code, really It makes in the random access chance corresponding to the target downlink synchronizing signal block, being connect at random for sending corresponding to terminal Enter target competition random access lead code entrained when signal.

In the embodiment of the present invention, terminal is determining object synchronization block, and receives the first quantitative value and second It after quantitative value (such as N), needs from preset multiple Preamble codes, it is right in target downlink synchronizing signal block institute to determine Any taken in the random access chance answered, when can be using N number of continuous Preamble codes as sending accidental access signal The competition random access lead code of band.Specifically, terminal detects whether the first quantitative value is less than or equal to 1 first, when detecting When first quantitative value is less than or equal to 1, then step as shown in Figure 2 is executed, namely execute step S1031~step S1033；When When detecting that the first quantitative value is more than 1, then step as shown in Figure 3 is executed, namely execute step S1034~step S1038.

Fig. 2 is referred to, Fig. 2 is the sub-process figures of step S103 in one embodiment shown in Fig. 1, including：

If S1031, first quantitative value are less than or equal to 1, terminal if, obtains first and is identified with reference to lead code.

In the embodiment of the present invention, the first quantitative value is less than or equal to 1, that is to say that the first quantitative value is 1/8,1/4,1/2 or 1 In any one.First is identified as any one in the mark of preset lead code with reference to lead code, and first refers to lead code Mark can be pre-set, can also be base station and be sent to terminal.

S1032, the terminal is identified with reference to lead code according to described first and second quantitative value, from described preset Target lead code mark is determined in the mark of lead code.

Specifically, sequence is come first with reference to leading by terminal according to the sequence of preset lead code identified from small to large The continuous lead code mark of third quantity after code mark and the first reference lead code mark are determined as target lead code Mark.Alternatively, the sequence that identifies from small to large of the terminal according to preset lead code, comes first by sequence and is identified with reference to lead code The continuous lead code of third quantity before identifies and first is determined as target lead code mark with reference to lead code mark. Wherein, the value of third quantity is that the second quantitative value subtracts one, be that is to say as N-1；The sequence of the mark of preset lead code is continuous, different The corresponding preset lead code of lead code mark in different lead codes.

Further include reserved being used for non-competing random access in some feasible embodiments, in the preset lead code Lead code, which is identified as in the mark of preset lead code, except the lead code for non-competing random access Mark except any one.Terminal is identified with reference to lead code according to first and the second quantitative value N, from preset lead code In lead code mark in mark in addition to for the mark of the lead code of non-competing random access, determine it is N number of it is continuous before Leading code mark is identified as target lead code.

S1033, the terminal determine the corresponding lead code of the mark of target lead code described in the preset lead code In the random access chance corresponding to the target downlink synchronizing signal block, to be used to send random access corresponding to terminal Entrained target competes random access lead code when signal.

The technical solution of embodiment for a better understanding of the present invention is illustrated below by the mode of citing, wherein Preset lead code is 64, and the sequence of preset lead code mark is continuous, it is assumed that carries out preset lead code according to 0~63 sequence Mark, and assume that the second quantitative value N is 4.Method one：If the first reference lead code mark (such as 10) is pre-set, And identified for terminal, then this 4 continuous lead code marks of mark 7,8,9,10 can be determined as target lead code mark by terminal This 4 continuous lead codes known, and will correspond to lead code in preset lead code and be identified as 7,8,9,10, are determined as under target It is entrained when accidental access signal for sending corresponding to terminal in random access chance corresponding to line synchronising signal block Target competes random access lead code.Alternatively, if first with reference to lead code mark (such as 0) is pre-set, and it is Point identification, then terminal, which can identify this 4 continuous lead codes of mark 0,1,2,3, be determined as target lead code mark, and will This 4 continuous lead codes that lead code is identified as 0,1,2,3 are corresponded in preset lead code, are determined as synchronizing in target downlink and be believed In random access chance corresponding to number block, corresponding to terminal for sending target competition entrained when accidental access signal Random access lead code.It should be noted that it is to write in terminal chip in advance to pre-set, does not need base station and retransmit Additional signaling is how many with reference to lead code mark with instruction terminal pre-set first or plays point identification or terminal mark Know.

Method two：Terminal receives base station is sent first and is identified with reference to lead code, base station can directly by RMSI or Wireless heterogeneous networks (Radio Resource Control, RRC) signaling is sent to terminal by first with reference to lead code mark.Its In, RRC signaling can be the RRC signaling of fractional bandwidth (Bandwidth Part, BWP) specific (specific), SSB The RRC signaling of RRC signaling or user equipment (User Equipment, UE) specific of specific.Terminal receives After first with reference to lead code mark, it is used as point identification with reference to lead code mark by first, has added N-1 values, so that it is determined that Go out target lead code mark.For example, first is identified as 3, N 4 with reference to lead code, then terminal can be this 4 by mark 3,4,5,6 Continuous lead code mark is determined as target lead code mark, and is identified as 3,4,5,6 by lead code is corresponded in preset lead code This 4 continuous lead codes, be determined as in the random access chance corresponding to target downlink synchronizing signal block, terminal institute it is right That answers competes random access lead code for sending target entrained when accidental access signal.

Method three：Preset lead code includes a lead codes for being used for non-competing random access of reserved X.It can will be preset Maximum X lead code is identified in lead code and reserves the lead code being used as non-competing random access, alternatively, by preset X minimum lead code is identified in lead code reserves the lead code being used as non-competing random access.Wherein, reserved The X lead codes for non-competing random access can provide, and write direct terminal chip in a standard；It can also be by base station Terminal is informed by RMSI or other RRC signalings.Terminal is from the mark of preset lead code except X for non-competing random In lead code mark except the mark of the lead code of access, a lead code mark is randomly choosed as first and refers to lead code Mark, then from lead code identify such as 0~63-X either choose in X~63 first with reference to before lead code mark or The continuous lead code mark of 3 later and the first reference lead code mark are identified as target lead code.And will be preset before The corresponding lead code of target lead code mark in leading code, is determined as connecing at random corresponding to target downlink synchronizing signal block Enter in chance, random access lead code is competed for sending target entrained when accidental access signal corresponding to terminal.

It should be noted that first can be the starting point mark identified for determining target lead code with reference to lead code mark Know, terminal identifies or the corresponding mark of other positions；The X reserved lead codes for non-competing random access can also It is that other continuous lead codes, the embodiment of the present invention are not construed as limiting in preset lead code.For method one and method two, according to After the above method determines target competition random access lead code, the target determined can will be removed in target lead code and is competed Other lead codes other than random access lead code are as the lead code for non-competing random access.

In some feasible embodiments, terminal can also according to the mark sequence from small to large of preset lead code, First will be come and be determined as target lead code mark with reference to N number of continuous lead code mark after lead code mark.Or Sequence can also be come first and is identified with reference to lead code by person, terminal according to the sequence of preset lead code identified from small to large N number of continuous lead code mark before is determined as target lead code mark.

Fig. 3 is referred to, Fig. 3 is the sub-process figures of step S103 in another embodiment shown in Fig. 1, including：

If S1034, first quantitative value are more than 1, terminal if, obtains the target downlink synchronizing signal block Mark.

In the embodiment of the present invention, the mark of target downlink synchronizing signal block indicates corresponding to target downlink synchronizing signal block Random access chance in, quantity corresponding to the first quantitative value of the target downlink synchronizing signal block corresponding to preset lead code Downlink synchronous signal clooating sequence value in the block.

Please also refer to Fig. 4 a, Fig. 4 b and Fig. 4 c, it is assumed that base station is practical to have sent 4 downlink synchronous signal blocks, a week Frequency domain has 2 random access chances, time domain to have 4 random access chances in phase.Fig. 4 a are the random access machine in a cycle Can number schematic diagram, wherein according to time domain after first frequency domain, in frequency domain after first low frequency high frequency rule in a cycle with Machine access chance is numbered.Fig. 4 b and Fig. 4 c give in each random access chance RO which synchronizing signal can be used for sending The lead code of block, i.e., the lead code example corresponding with which synchronizing signal block in each random access chance RO.For The case where one quantitative value is 1/2, i.e. synchronizing signal block occupies two random access chance RO, synchronizing signal block with connect at random The correspondence for entering chance RO can be as shown in Figure 4 b.Wherein, synchronizing signal block #1 is corresponding with random access chance RO#1 and RO#2, Synchronizing signal block #2 is corresponding with random access chance RO#3 and RO#4, for synchronizing signal block #3 and #4, then as shown in Figure 4 b, This is repeated no more.It is 2 for the first quantitative value, i.e., each random access chance RO can be used for sending 2 synchronizing signal blocks and correspond to Lead code the case where, the correspondence of synchronizing signal block and random access chance RO can be as illustrated in fig. 4 c.Wherein, random access Chance RO#1 is corresponding with synchronizing signal block #1 and #2, and random access chance RO#2 is corresponding with synchronizing signal block #3 and #4, for Machine accesses chance RO#3 to RO#8, then as illustrated in fig. 4 c, details are not described herein.The case where being other values for the first quantitative value, Then can with and so on, details are not described herein.It can determine that out that terminal connects according to mode, terminal shown in Fig. 4 a, Fig. 4 b and Fig. 4 c The corresponding lead code of object synchronization block received is sent in which random access chance RO, also can know that terminal receives To the corresponding multiple synchronizing signal blocks of lead code that can be sent in this random access chance RO of object synchronization block in Clooating sequence value.

S1035, the terminal determine reference value according to the quantity of first quantitative value and the preset lead code.

In the embodiment of the present invention, reference value (such as M) is the quantity according to the first quantitative value (such as K) and preset lead code Determining, and reference value is greater than or equal to the second quantitative value N；Reference value M can for example be calculated according to formula M=64/K. It should be noted that the calculation of reference value M can also be other modes, the embodiment of the present invention is not construed as limiting.

S1036, the terminal are according to the reference value, according to the mark sequence from small to large of the preset lead code, The mark of the preset lead code is divided into the identification section of quantity corresponding to first quantitative value.

Include continuous ginseng in the embodiment of the present invention, in the identification section of quantity corresponding to the first quantitative value for dividing The lead code mark of quantity corresponding to value is examined, includes in other words, in the K identification section divided M continuous leading Code mark.As an example it is assumed that preset lead code is identified according to 0~63 sequence, when the first quantitative value K is 4, then refer to Value M is 16；It can be by the mark of preset lead code according to the sequence of preset lead code identified from small to large according to reference value M It is divided into 4 identification sections.As follows：

First identifier section includes being identified as 16 lead codes mark of 0~M-1 namely 0~15；

Second identifier section includes being identified as 16 lead codes mark of M~2M-1 namely 16~31；

Third identification section includes the 16 lead codes mark for being identified as 2M~3M-1 namely 32~47；

16 lead codes mark of 4th identification section including being identified as 3M~63 namely 48~63.

S1037, the terminal determine target according to the mark of the target downlink synchronizing signal block from the identification section Identification section, and identified from the lead code for choosing quantity corresponding to second quantitative value in the target identification section as before target Leading code identifies.

In the embodiment of the present invention, terminal according to the mark of target downlink synchronizing signal block, is marked first from K obtained is divided Know in section and determines target identification section.Please with reference to above-mentioned example, it is assumed that target downlink synchronizing signal block is identified as 3, table Show in the random access chance corresponding to target downlink synchronizing signal block, target downlink synchronizing signal block is in preset lead code institute Corresponding 4 downlink synchronous signals clooating sequence value in the block is 3；Then terminal that is to say third identification section including lead code The identification section of mark 32~47 is determined as target identification section.Then terminal chooses N number of continuous lead code from target identification section Mark is identified as target lead code.

Specifically, terminal obtains second and is identified with reference to lead code first, and second is identified as target identification section with reference to lead code Including lead code mark in any one, second with reference to lead code mark can be pre-set, can also be base station It is sent to terminal.Can be before identifying minimum in target identification section when second reference lead code is identified as pre-set Leading code identifies, and has been point identification.Then terminal identifies sequence from small to large according to the lead code that target identification section includes, will It comes second and refers to lead code with reference to the continuous lead code mark of the third quantity after lead code mark and second Mark is determined as target lead code mark.Alternatively, lead code mark from small to large suitable that terminal includes according to target identification section Sequence will come the second continuous lead code mark with reference to the third quantity before lead code mark and the second reference Lead code mark is determined as target lead code mark.Wherein, the value of third quantity is that the second quantitative value subtracts one, be that is to say as N-1； The sequence of the mark of preset lead code is continuous, the corresponding different lead code of different marks.

In some feasible embodiments, in the K identification section divided include it is reserved for it is non-competing with The mark of the lead code of machine access, terminal is from target identification section in addition to for the mark of the lead code of non-competing random access Lead code mark in, choose the second quantitative value corresponding to quantity continuous lead code mark as target lead code identify.

S1038, the terminal determine the corresponding lead code of the mark of target lead code described in the preset lead code In the random access chance corresponding to the target downlink synchronizing signal block, to be used to send random access corresponding to terminal Entrained target competes random access lead code when signal.

Please with reference to above-mentioned example, third identification section that is to say the mark for including lead code mark 32~47 by terminal It after section is determined as target identification section, obtains second and is identified with reference to lead code, it is assumed that second is identified as target identification with reference to lead code Minimum lead code mark is identified in section, and the second quantitative value N is 4.Then terminal will identify 2M~2M+N-1 in third identification section, It that is to say that the continuous lead code mark of mark 32,33,34,35 this 4 is determined as target lead code mark, and by preset lead code Middle corresponding lead code is identified as 32,33,34,35 this 4 continuous lead codes, is determined as in target downlink synchronizing signal block institute In corresponding random access chance, being connect at random for target competition entrained when sending accidental access signal corresponding to terminal Enter lead code.

Correspondingly, assuming in the random access chance corresponding to target downlink synchronizing signal block, preset lead code institute is right K answered, that is to say in 4 downlink synchronous signal blocks, the downlink synchronous signal block that clooating sequence value is 1 is the first down-going synchronous Block, the downlink synchronous signal block that clooating sequence value is 2 are the second downlink synchronous signal block, the downlink that clooating sequence value is 3 Synchronizing signal block is third downlink synchronous signal block, and the downlink synchronous signal block that clooating sequence value is 4 is the 4th down-going synchronous letter Number block, and second is identified as with reference to lead code and identifies minimum lead code mark in target identification section.Under the target that terminal obtains Line synchronising signal block can be the first downlink synchronous signal block, the second downlink synchronous signal block, third downlink synchronous signal block and 4th downlink synchronous signal it is in the block any one.Had according to aforesaid way：

Terminal can will identify 0~N-1 in above-mentioned first identifier section, that is to say mark 0,1,2,3 corresponding 4 it is continuous Lead code is determined as in the random access chance corresponding to the first downlink synchronous signal block, is used to send corresponding to terminal Entrained competition random access lead code when accidental access signal；It that is to say that the first downlink synchronous signal block is corresponding corresponding The Preamble codes for the CBRA that can be used in random access chance RO.

Terminal can will identify M~M+N-1 in above-mentioned second identifier section, that is to say mark 16,17,18,19 corresponding 4 Continuous lead code is determined as in the random access chance corresponding to the second downlink synchronous signal block, the use corresponding to terminal Entrained competition random access lead code when sending accidental access signal；It that is to say that the second downlink synchronous signal block is corresponding The Preamble codes for the CBRA that can be used in corresponding random access chance RO.

Terminal can will identify 2M~2M+N-1 in above-mentioned third identification section, that is to say mark 32,33,34,35 corresponding 4 A continuous lead code is determined as in the random access chance corresponding to third downlink synchronous signal block, corresponding to terminal Entrained competition random access lead code when for sending accidental access signal；It that is to say that third downlink synchronous signal block corresponds to The CBRA that can be used in corresponding random access chance RO Preamble codes.

Terminal can will identify 3M~3M+N-1 in above-mentioned 4th identification section, that is to say mark 48,49,50,51 corresponding 4 A continuous lead code is determined as in the random access chance corresponding to the 4th downlink synchronous signal block, corresponding to terminal Entrained competition random access lead code when for sending accidental access signal；It that is to say that the 4th downlink synchronous signal block corresponds to The CBRA that can be used in corresponding random access chance RO Preamble codes.

In some feasible embodiments, in the K identification section divided include it is reserved for it is non-competing with The mark of the lead code of machine access can will divide in obtained each identification section and identify maximum D lead code mark in advance It is set aside as the mark of the lead code for non-competing random access, alternatively, getting the bid each obtained identification section is divided Know D minimum lead code and reserves the mark for being used as the lead code for non-competing random access.Wherein, each is identified The mark for the D lead codes for non-competing random access reserved in section can provide in a standard, and write direct terminal Chip；Terminal can also be informed by RMSI or other RRC signalings by base station.Terminal is from target identification section except for non- It competes in the lead code mark except the mark of the lead code of random access, randomly chooses a lead code mark as the second ginseng Leading code identifies before examination, then for example from mark 2M~3M-D-1 or 2M+D-1~3M-1, chooses second and refers to lead code mark N-1 before knowledge or later continuous lead code marks and the second reference lead code mark are used as target lead code Mark.And it is determined as the corresponding lead code of target lead code mark in preset lead code in target downlink synchronizing signal In random access chance corresponding to block, corresponding to terminal for send when accidental access signal entrained target competition with Machine access lead code.

Correspondingly, terminal can for example be identified from above-mentioned first identifier section in 0~M-D-1 or D-1~M-1, at random It chooses N number of continuous lead code mark to identify as the first lead code, and first lead code in preset lead code is identified into institute Corresponding lead code is determined as in the random access chance corresponding to the first downlink synchronous signal block, corresponding to terminal Entrained competition random access lead code when for sending accidental access signal；It that is to say that the first downlink synchronous signal block corresponds to The CBRA that can be used in corresponding random access chance RO Preamble codes.

Terminal can for example be identified from above-mentioned second identifier section in M~2M-D-1 or M+D-1~2M-1, random to select N number of continuous lead code mark is taken to be identified as the second lead code, and second lead code mark institute in preset lead code is right The lead code answered is determined as in the random access chance corresponding to the second downlink synchronous signal block, is used for corresponding to terminal Send competition random access lead code entrained when accidental access signal；That is to say the second downlink synchronous signal block it is corresponding The Preamble codes for the CBRA that can be used in corresponding random access chance RO.

Terminal can for example be identified from above-mentioned third identification section in 2M~3M-D-1 or 2M+D-1~3M-1, at random It chooses N number of continuous lead code mark to identify as third lead code, and the third lead code in preset lead code is identified into institute Corresponding lead code is determined as in the random access chance corresponding to third downlink synchronous signal block, the use corresponding to terminal Entrained competition random access lead code when sending accidental access signal；It that is to say that third downlink synchronous signal block is corresponding The Preamble codes for the CBRA that can be used in corresponding random access chance RO.

Terminal can for example be identified from above-mentioned 4th identification section in 3M~4M-D-1 or 3M+D-1~4M-1, at random It chooses N number of continuous lead code mark to identify as the 4th lead code, and the 4th lead code in preset lead code is identified into institute Corresponding lead code is determined as in the random access chance corresponding to the 4th downlink synchronous signal block, the use corresponding to terminal Entrained competition random access lead code when sending accidental access signal；It that is to say that the 4th downlink synchronous signal block is corresponding The Preamble codes for the CBRA that can be used in corresponding random access chance RO.

Using the above method, may be set in a random access chance, synchronizing signal block and random access lead code Mapping relations so that terminal is quickly determined according to the first quantitative value and the second quantitative value in random access chance In, corresponding to terminal random access lead code is competed for sending target entrained when accidental access signal.

It should be noted that second can be the starting point mark identified for determining target lead code with reference to lead code mark Know, terminal identifies or the corresponding mark of other positions；D reserved in each identification section are for non-competing random access Lead code can also be other continuous lead codes in each identification section；The clooating sequence of target lead code also can be according to from big To small sequence, the embodiment of the present invention is not construed as limiting.It the case where being other values for the second quantitative value N, then can be according to above-mentioned Mode and so on, details are not described herein.

The target downlink synchronizing signal block that the embodiment of the present invention is sent by obtaining base station receives the first number that base station is sent Magnitude, and receive the second quantitative value of base station transmission, wherein the first quantitative value indicates preset leading in a random access chance The quantity of downlink synchronous signal block corresponding to code；It is same that second quantitative value is used to indicate in a random access chance each downlink The corresponding quantity for sending competition random access lead code entrained when accidental access signal of step block；Then basis First quantitative value and the second quantitative value determine connecing at random corresponding to target downlink synchronizing signal block from preset lead code Enter in chance, random access lead code is competed for sending target entrained when accidental access signal corresponding to terminal, from And it can effectively improve the efficiency that terminal determines random access lead code.

Referring to Fig. 5, Fig. 5 is a kind of structural schematic diagram of the determining device of lead code provided in an embodiment of the present invention.This The determining device of lead code described in inventive embodiments, corresponds to previously described terminal, and the lead code determines dress Set including：

Acquiring unit 501, the target downlink synchronizing signal block for obtaining base station transmission.

Receiving unit 502, the first quantitative value sent for receiving the base station, first quantitative value indicate one with Machine accesses the quantity of the downlink synchronous signal block corresponding to preset lead code in chance.

The receiving unit 502 is additionally operable to receive the second quantitative value that the base station is sent, and second quantitative value is used for Each downlink synchronous signal block is corresponding entrained when accidental access signal for sending in one random access chance of instruction Compete the quantity of random access lead code.

Processing unit 503 is used for according to first quantitative value and second quantitative value from the preset lead code, It determines in the random access chance corresponding to the target downlink synchronizing signal block, is used to send corresponding to described device Entrained target competes random access lead code when accidental access signal.

In some feasible embodiments, the acquiring unit 501 obtains the target downlink synchronizing signal that base station is sent The concrete mode of block is：

Receive at least one downlink synchronous signal block that base station is sent；

Determine that target downlink synchronizing signal block, the target downlink are same from least one downlink synchronous signal block The signal strength values for walking block are greater than or equal to preset signal strength threshold value.

In some feasible embodiments, the processing unit 503 is specifically used for：

If first quantitative value is less than or equal to 1, obtains first and identified with reference to lead code, before first reference Leading code is identified as any one in the mark of the preset lead code；

According to described first with reference to lead code mark and second quantitative value, from the mark of the preset lead code Determine that target lead code identifies；

It is determined as the corresponding lead code of the mark of target lead code described in the preset lead code under the target It is entrained when accidental access signal for sending corresponding to terminal in random access chance corresponding to line synchronising signal block Target competes random access lead code.

In some feasible embodiments, described first is pre-set or is described with reference to lead code mark Base station is sent to the terminal.

In some feasible embodiments, the processing unit 503 according to it is described first with reference to lead code identify and Second quantitative value determines that the concrete mode of target lead code mark is from the mark of the preset lead code：

According to the sequence of the preset lead code identified from small to large, sequence is come described first and refers to lead code mark The continuous lead code of third quantity after knowledge identifies and described first is determined as target lead code with reference to lead code mark Mark；

Alternatively, according to the sequence of the preset lead code identified from small to large, before sequence is come first reference The continuous lead code mark of third quantity before leading code mark and the first reference lead code mark are determined as target Lead code identifies；

Wherein, the value of the third quantity is that second quantitative value subtracts one.

In some feasible embodiments, the preset lead code includes reserved for non-competing random access Lead code, described first is identified as with reference to lead code in the mark of the preset lead code, is connect at random for non-competing except described Any one except the mark of the lead code entered；The processing unit 503 according to it is described first with reference to lead code identify and Second quantitative value determines that the concrete mode of target lead code mark is from the mark of the preset lead code：

According to described first with reference to lead code mark and second quantitative value, from the mark of the preset lead code In, determine second quantitative value in the lead code mark in addition to the mark of the lead code for non-competing random access The continuous target lead code of corresponding quantity identifies.

If first quantitative value is more than 1, the mark of the target downlink synchronizing signal block is obtained, under the target In random access chance of the mark expression of line synchronising signal block corresponding to the target downlink synchronizing signal block, the target In the downlink synchronous signal block of quantity corresponding to the first quantitative value of the downlink synchronous signal block corresponding to the preset lead code Clooating sequence value；

According to the identifying of the target downlink synchronizing signal block, first quantitative value and second quantitative value from described In preset lead code, determine in the random access chance corresponding to the target downlink synchronizing signal block, corresponding to terminal For sending entrained target competition random access lead code when accidental access signal.

Determine that reference value, the reference value are more than or wait according to the quantity of first quantitative value and the preset lead code In second quantitative value；

It will be described preset leading according to the sequence of the preset lead code identified from small to large according to the reference value The mark of code is divided into the identification section of quantity corresponding to first quantitative value, and the identification section includes the continuous reference The lead code mark of the corresponding quantity of value；

Target identification section is determined from the identification section according to the mark of the target downlink synchronizing signal block, and from described The lead code mark that quantity corresponding to second quantitative value is chosen in target identification section is identified as target lead code；

In some feasible embodiments, the processing unit 503 chooses described second from the target identification section The lead code of quantity corresponding to quantitative value identifies the concrete mode identified as target lead code：

It obtains second to identify with reference to lead code, described second is identified as with reference to lead code before the target identification section includes Leading code mark in any one；

Sequence from small to large is identified according to the lead code that the target identification section includes, sequence is come into second ginseng The continuous lead code mark of the third quantity after leading code mark and the second reference lead code mark are determined as before examination Target lead code identifies；

Alternatively, identifying sequence from small to large according to the lead code that the target identification section includes, sequence is come described Second identifies with reference to the continuous lead code mark of the third quantity before lead code mark and described second with reference to lead code It is determined as target lead code mark；

In some feasible embodiments, described second is pre-set or is described with reference to lead code mark Base station is sent to the terminal.

Include reserving for before non-competing random access in some feasible embodiments, in the identification section The mark of leading code, the processing unit 503 in the target identification section before choosing quantity corresponding to second quantitative value Leading code identifies the concrete mode identified as target lead code：

Lead code from the target identification section in addition to the mark of the lead code for non-competing random access In mark, the continuous lead code mark for choosing quantity corresponding to second quantitative value is identified as target lead code.

It is understood that the function of each functional unit of the determining device of the lead code of the embodiment of the present invention can be according to upper The method specific implementation in embodiment of the method is stated, specific implementation process is referred to the associated description of above method embodiment, Details are not described herein again.

In the embodiment of the present invention, acquiring unit 501 obtains the target downlink synchronizing signal block that base station is sent, receiving unit 502 receive the first quantitative value that base station is sent, and receive the second quantitative value of base station transmission, wherein the first quantitative value indicates one The quantity of downlink synchronous signal block in a random access chance corresponding to preset lead code；Second quantitative value is used to indicate one Each downlink synchronous signal block is corresponding random for sending competition entrained when accidental access signal in random access chance The quantity of access lead code；Then processing unit 503 is determined according to the first quantitative value and the second quantitative value from preset lead code Go out in the random access chance corresponding to target downlink synchronizing signal block, is used to send accidental access signal corresponding to terminal When entrained target compete random access lead code, so as to effectively improve the effect that terminal determines random access lead code Rate.

Referring to Fig. 6, Fig. 6 is a kind of structural schematic diagram of terminal provided in an embodiment of the present invention.In the embodiment of the present invention Described terminal, including：Processor 601, user interface 602, network interface 603 and memory 604.Wherein, processor 601, user interface 602, network interface 603 and memory 604 can be connected by bus or other modes, the embodiment of the present invention with For being connected by bus.

Wherein, processor 601 (or central processing unit (Central Processing Unit, CPU)) is the meter of terminal Core and control core are calculated, the Various types of data of all kinds of instructions and processing terminal in terminal can be parsed, such as：CPU It can be used for parsing user to the switching on and shutting down instruction transmitted by terminal, and control terminal carries out switching on and shutting down operation；For another example：CPU can To transmit all kinds of interaction datas, etc. between terminal inner structure.User interface 602 is to realize that user interacts with terminal With the medium of information exchange, concrete embodiment may include for the display screen (Display) of output and for the key of input Disk (Keyboard) etc., it should be noted that keyboard herein both can be physical keyboard, or touch screen virtual key Disk can also be the keyboard that entity is combined with touch screen virtualphase.Network interface 603 may include optionally that the wired of standard connects Mouth, wireless interface (such as WI-FI, mobile communication interface), can be used for transceiving data by the control of processor 601.Memory 604 (Memory) are the memory devices in terminal, for storing program and data.It is understood that memory 604 herein Both may include the internal memory of terminal, naturally it is also possible to the extended menory supported including terminal.Memory 604 provides Memory space, the memory space store the operating system of terminal, it may include but be not limited to：Android system, iOS system, Windows Phone systems etc., the present invention is to this and is not construed as limiting.

In embodiments of the present invention, processor 601 is executed such as by the executable program code in run memory 604 Lower operation：

Obtain the target downlink synchronizing signal block that base station is sent.

The first quantitative value that the base station is sent is received by the network interface 603, first quantitative value indicates one The quantity of downlink synchronous signal block in a random access chance corresponding to preset lead code.

The second quantitative value that the base station is sent is received by the network interface 603, second quantitative value is for referring to Show that each downlink synchronous signal block in a random access chance is corresponding entrained competing when accidental access signal for sending Strive the quantity of random access lead code.

According to first quantitative value and second quantitative value from the preset lead code, determine in the target In random access chance corresponding to downlink synchronous signal block, it is used to send accidental access signal when institute corresponding to described device The target of carrying competes random access lead code.

In some feasible embodiments, the processor 601 obtains the target downlink synchronizing signal block that base station is sent Concrete mode be：

At least one downlink synchronous signal block that base station is sent is received by the network interface 603；

In some feasible embodiments, the processor 601 is specifically used for：

In some feasible embodiments, the processor 601 is identified with reference to lead code according to described first and institute The second quantitative value is stated, determines that the concrete mode of target lead code mark is from the mark of the preset lead code：

In some feasible embodiments, the preset lead code includes reserved for non-competing random access Lead code, described first is identified as with reference to lead code in the mark of the preset lead code, is connect at random for non-competing except described Any one except the mark of the lead code entered；The processor 601 is identified with reference to lead code according to described first and institute The second quantitative value is stated, determines that the concrete mode of target lead code mark is from the mark of the preset lead code：

In some feasible embodiments, the processor 601 is specifically used for：

In some feasible embodiments, the processor 601 chooses second number from the target identification section The lead code of quantity corresponding to magnitude identifies the concrete mode identified as target lead code：

Include reserving for before non-competing random access in some feasible embodiments, in the identification section The mark of leading code, the processor 601 choose the leading of quantity corresponding to second quantitative value from the target identification section Code identifies the concrete mode identified as target lead code：

In the specific implementation, processor 601 described in the embodiment of the present invention, user interface 602, network interface 603 and Memory 604 can perform the realization side of the terminal described in a kind of determination method of lead code provided in an embodiment of the present invention Formula also can perform the realization method described in a kind of determining device for lead code that Fig. 5 of the embodiment of the present invention is provided, herein not It repeats again.

In the embodiment of the present invention, processor 601 obtains the target downlink synchronizing signal block that base station is sent, and passes through network interface 603 receive the first quantitative value that base station is sent, and receive the second quantitative value of base station transmission, wherein the first quantitative value indicates one The quantity of downlink synchronous signal block in a random access chance corresponding to preset lead code；Second quantitative value is used to indicate one Each downlink synchronous signal block is corresponding random for sending competition entrained when accidental access signal in random access chance The quantity of access lead code；Then it is determined under target from preset lead code according to the first quantitative value and the second quantitative value It is entrained when accidental access signal for sending corresponding to terminal in random access chance corresponding to line synchronising signal block Target competes random access lead code, so as to effectively improve the efficiency that terminal determines random access lead code.

It should be noted that for each embodiment of the method above-mentioned, for simple description, therefore it is all expressed as to a system The combination of actions of row, but those skilled in the art should understand that, the present invention is not limited by the described action sequence, because For according to the present invention, certain some step can be performed in other orders or simultaneously.Secondly, those skilled in the art also should Know, embodiment described in this description belongs to preferred embodiment, and involved action, unit and module are not necessarily Necessary to the present invention.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage Medium may include：Flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc..

The determination method, apparatus and terminal for being provided for the embodiments of the invention a kind of lead code above have carried out detailed Jie It continues, principle and implementation of the present invention are described for specific case used herein, and the explanation of above example is only It is the method and its core concept for being used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to this hair Bright thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not manage Solution is limitation of the present invention.

Claims

1. a kind of determination method of lead code, which is characterized in that the method includes：

The target downlink synchronizing signal block that base station is sent is obtained, and receives the first quantitative value that the base station is sent, described first Quantitative value indicates the quantity of the downlink synchronous signal block corresponding to preset lead code in a random access chance；

The second quantitative value that the base station is sent is received, second quantitative value is used to indicate in a random access chance each The corresponding quantity for sending competition random access lead code entrained when accidental access signal of downlink synchronous signal block；

According to first quantitative value and second quantitative value from the preset lead code, determine in the target downlink In random access chance corresponding to synchronizing signal block, it is used to send mesh entrained when accidental access signal corresponding to terminal Mark competition random access lead code.

2. according to the method described in claim 1, it is characterized in that, the target downlink synchronizing signal for obtaining base station and sending Block, including：

Determine that target downlink synchronizing signal block, the target downlink synchronize letter from least one downlink synchronous signal block The signal strength values of number block are greater than or equal to preset signal strength threshold value.

3. according to the method described in claim 1, it is characterized in that, described according to first quantitative value and second quantity Value is determined from the preset lead code in the random access chance corresponding to the target downlink synchronizing signal block, whole The corresponding target entrained when accidental access signal that is used to send in end competes random access lead code, including：

If first quantitative value is less than or equal to 1, obtains first and identified with reference to lead code, described first refers to lead code It is identified as any one in the mark of the preset lead code；

According to described first with reference to lead code mark and second quantitative value, determined from the mark of the preset lead code Target lead code identifies；

By the corresponding lead code of the mark of target lead code described in the preset lead code, it is determined as same in the target downlink It walks in the random access chance corresponding to block, is used to send target entrained when accidental access signal corresponding to terminal Compete random access lead code.

4. according to the method described in claim 3, it is characterized in that, it is described first with reference to lead code mark be it is pre-set, The either base station is sent to the terminal.

5. method according to claim 3 or 4, which is characterized in that it is described according to it is described first with reference to lead code identify with And second quantitative value, target lead code mark is determined from the mark of the preset lead code, including：

According to the sequence of the preset lead code identified from small to large, sequence is come described first and identifies it with reference to lead code The continuous lead code of third quantity afterwards identifies and described first is determined as target lead code mark with reference to lead code mark Know；

Alternatively, according to the sequence of the preset lead code identified from small to large, sequence is come described first and refers to lead code It is leading that the continuous lead code mark of third quantity before mark and the first reference lead code mark are determined as target Code mark；

6. according to the method described in claim 3, it is characterized in that, the preset lead code includes reserving for non-competing The lead code of random access, described first is identified as with reference to lead code in the mark of the preset lead code, except described for non- Compete any one except the mark of the lead code of random access；

It is described to refer to lead code mark and second quantitative value according to described first, from the mark of the preset lead code Determine that target lead code identifies, including：

It is identified with reference to lead code according to described first and second quantitative value is removed from the mark of the preset lead code Determine that the second quantitative value institute is right in lead code mark except the mark of the lead code for non-competing random access The continuous target lead code of quantity is answered to identify.

7. according to the method described in claim 1, it is characterized in that, described according to first quantitative value and second quantity Value is determined from the preset lead code in the random access chance corresponding to the target downlink synchronizing signal block, whole The corresponding target entrained when accidental access signal that is used to send in end competes random access lead code, including：

If first quantitative value is more than 1, the mark of the target downlink synchronizing signal block is obtained, the target downlink is same It walks in random access chance of the mark expression of block corresponding to the target downlink synchronizing signal block, the target downlink The downlink synchronous signal row in the block of quantity corresponding to the first quantitative value of the synchronizing signal block corresponding to the preset lead code Sequence sequence valve；

According to the identifying of the target downlink synchronizing signal block, first quantitative value and second quantitative value from described preset In lead code, determine in the random access chance corresponding to the target downlink synchronizing signal block, the use corresponding to terminal Entrained target competes random access lead code when sending accidental access signal.

8. the method according to the description of claim 7 is characterized in that the mark according to the target downlink synchronizing signal block Knowledge, first quantitative value and second quantitative value are determined to synchronize in the target downlink from the preset lead code It is competing for sending target entrained when accidental access signal corresponding to terminal in random access chance corresponding to block Random access lead code is striven, including：

Determine that reference value, the reference value are greater than or equal to institute according to the quantity of first quantitative value and the preset lead code State the second quantitative value；

According to the reference value, according to the sequence of the preset lead code identified from small to large, by the preset lead code Mark is divided into the identification section of quantity corresponding to first quantitative value, and the identification section includes the continuous reference value institute The lead code of corresponding number identifies；

Target identification section is determined from the identification section according to the mark of the target downlink synchronizing signal block, and from the target The lead code mark that quantity corresponding to second quantitative value is chosen in identification section is identified as target lead code；

9. according to the method described in claim 8, it is characterized in that, described choose second number from the target identification section The lead code mark of quantity corresponding to magnitude is identified as target lead code, including：

It obtains second to identify with reference to lead code, described second is identified as the lead code that the target identification section includes with reference to lead code Any one in mark；

Sequence from small to large is identified according to the lead code that the target identification section includes, before sequence is come second reference The continuous lead code mark of third quantity after leading code mark and the second reference lead code mark are determined as target Lead code identifies；

Alternatively, identifying sequence from small to large according to the lead code that the target identification section includes, sequence is come described second The continuous lead code mark of third quantity before being identified with reference to lead code and described second is with reference to lead code mark determination It is identified for target lead code；

10. according to the method described in claim 9, it is characterized in that, it is described second with reference to lead code mark be it is pre-set, The either base station is sent to the terminal.

11. according to the method described in claim 8, it is characterized in that, including reserved for non-competing in the identification section The mark of the lead code of random access, it is described before choosing quantity corresponding to second quantitative value in the target identification section Leading code mark is identified as target lead code, including：

Lead code mark from the target identification section in addition to the mark of the lead code for non-competing random access In, the continuous lead code mark for choosing quantity corresponding to second quantitative value is identified as target lead code.

12. a kind of determining device of lead code, which is characterized in that described device includes：

Receiving unit, the first quantitative value sent for receiving the base station, first quantitative value indicate a random access The quantity of downlink synchronous signal block in chance corresponding to preset lead code；

The receiving unit is additionally operable to receive the second quantitative value that the base station is sent, and second quantitative value is used to indicate one In a random access chance each downlink synchronous signal block it is corresponding for send competition entrained when accidental access signal with The quantity of machine access lead code；

Processing unit, for from the preset lead code, being determined according to first quantitative value and second quantitative value In random access chance corresponding to the target downlink synchronizing signal block, being connect at random for sending corresponding to described device Enter target competition random access lead code entrained when signal.

13. a kind of terminal, which is characterized in that including：Processor, network interface and memory, the memory, which is stored with, to be held Line program code, the network interface are used for messaging by the control of the processor, and the processor is described for calling Executable program code executes the determination method of the lead code as described in any one of claim 1 to 11.

14. a kind of storage medium, which is characterized in that instruction is stored in the storage medium, when run on a computer, So that computer executes the determination method of the lead code as described in any one of claim 1 to 11.