CN101340234A - Method for mapping physical stochastic access channel - Google Patents

Abstract

The invention provides a method for mapping a physical random access channel, which includes the following steps: obtaining the intensity and the amount of versions of the physical random access channels; constructing density indexes according to the density and constructing version number according to the amount of the versions; constructing the numbers of the physical random access channels by the density indexes and the version number, and increasing the density indexes and the version number sequentially; mapping all the physical random access channels into a time domain and/or a frequency domain sequentially according to the numbers. The method can ensure that the time needs processing by the same base station is to be distributed uniformly, meanwhile, the method can maximally reduce the interference of the second class of PRACH among districts.

Description

A kind of method that is used for mapping physical random access channel

Technical field

The present invention relates to the communications field, in particular to a kind of method that is used for mapping physical random access channel.

Background technology

LTE system TDD (Time Division Duplex; time division duplex) in the frame structure of pattern; a 10ms (307200Ts; radio frames 1ms=30720Ts) is divided into two fields; the long 5ms of each field (153600Ts); comprise the common time slot that 8 length are 0.5ms; and three special time slots; be DwPTS (Downlink Pilot Time Slot; descending pilot frequency time slot); GP (Guard Period; protection is at interval) and UpPTS (UplinkPilot Time Slot, uplink pilot time slot), and these three special time slot length sums are 1ms (30720Ts).Subframe 1 is made up of three special time slots all the time; When 2 downstream-to-upstream transfer points were arranged in the 10ms, subframe 6 was made up of three special time slots, and under other situation, 6 of subframes comprise DwPTS (at this moment DwPTS length is 1ms).Other subframe is made up of 2 common time slots.

In above-mentioned frame structure, subframe 0,5 and DwPTS are used for downlink transfer all the time, and subframe 2 and UpPTS are used for uplink all the time.When 2 downstream-to-upstream transfer points were arranged in the 10ms, subframe 7 also was used for uplink.

Under the tdd mode of LTE system, Physical Random Access Channel (PRACH, Physical Random Access CHannel) can be divided into two big classes:

The √ first kind is transmitted in general sub-frame of uplink (subframe that does not comprise special time slot), and this class PRACH has 4 kinds, is respectively

■ Preamble format 0 (leading form 0): account for 1 sub-frame of uplink, CP (CyclicPrefix) length is 3168TS, and preamble (leading) length is 24576Ts;

■ Preamble format 1: account for 2 sub-frame of uplink, CP (Cyclic Prefix) length is 21024TS, and preamble (leading) length is 24576Ts;

■ Preamble format 2: account for 2 sub-frame of uplink, CP (Cyclic Prefix) length is 6240TS, and preamble (leading) length is 2 * 24576Ts;

■ Preamble format 3: account for 3 sub-frame of uplink, CP (Cyclic Prefix) length is 21024Ts, and preamble (leading) length is 2 * 24576Ts;

√ second class is transmitted in UpPTS, and this class PRACH has a kind, for

■ Preamble format 4:CP (Cyclic Prefix) length is 448Ts, and preamble (leading) length is 4096Ts;

At frequency domain, above-mentioned various PRACH account for 6 RB (Resource Block), and each RB comprises 12 subcarriers, and the bandwidth of each subcarrier is 15kHz.

Mobile phone at first will carry out down-going synchronous when connecting system, mobile phone demodulation broadcast channel obtains the preparation parameter of PRACH then, finishes uplink synchronous by PRACH more at last, and foundation is connected with the base station.Here, under the tdd mode preparation parameter of PRACH comprise density (in the unit interval, have what PRACH to use, D=2PRACH/10ms for example, represent have in the 10ms 2 PRACH can with), leading form (preamble format), version number.Wherein, form, density is identical but the version difference means that preamble format is identical, the quantity of PRACH is identical in the unit interval, but the time domain of these PRACH or frequency domain position difference.For with a kind of form, the PRACH of same density is provided with a plurality of versions, it is that the PRACH by the different districts of same BTS management is broken up in time that different districts uses the purpose of different editions, each sub-district that same base station is managed proposes the processing request of PRACH in the different moment, it is constantly too busy at some to avoid occurring the base station, and in other phenomenons of handling of free of data constantly.In addition, be the PRACH of preamble format 4 for type, owing to do not send data in the UpPTS, so different districts uses different versions, the PRACH of each sub-district has different time domains or frequency domain position, reduces the effect that minizone PRACH disturbs in addition.

In the process of uplink synchronous, mobile phone to utilize the preparation parameter of PRACH obtain according to certain algorithm the PRACH that can use this sub-district the time, position frequently.In realizing process of the present invention, the inventor finds not propose in the prior art when rational, location map algorithm frequently, thereby causes same base station to handle PRACH skewness in time, and has the bigger problem of presence of intercell interference of the second class PRACH.

Summary of the invention

The present invention aims to provide a kind of method that is used for mapping physical random access channel, to solve same base station processing PRACH problem pockety in time in the prior art.

In an embodiment of the present invention, provide a kind of method that is used for mapping physical random access channel, may further comprise the steps: the density and the version number that obtain Physical Random Access Channel; According to density structure density index with according to the version number build version number; Use density index and version number to make up the numbering of Physical Random Access Channel, density index and version number are sequentially increased progressively; And with all Physical Random Access Channels according to the numbering be mapped in an orderly manner time domain and or frequency domain on.

Preferably, getting access to density is D _RA, version number is R, makes up the density index according to density and specifically comprises: making up the density index is

According to the version number build version number is r _RA=0,1 ..., R-1; The numbering of using density index and version number to make up Physical Random Access Channel specifically comprises: numbering is set

Wherein increase progressively d earlier, increase progressively r again _RA

Preferably, the density of obtaining Physical Random Access Channel specifically comprises: make N wherein _t ^RABe the quantity of the Physical Random Access Channel of a current format that can hold on the time domain in the access period at random, N _RA ^BWQuantity for the Physical Random Access Channel that can hold on the available frequency resources.

Preferably, D _RA=0.5 Physical Random Access Channel/10ms comprises that according to numbering to be mapped in an orderly manner the following method of employing is mapped to all Physical Random Access Channels on the 10ms radio frames with all Physical Random Access Channels: press N on the time domain _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on the radio frames that is numbered even number and odd number, wherein, the Physical Random Access Channel that is numbered even number is mapped on the radio frames that is numbered even number, and the Physical Random Access Channel that is numbered odd number is mapped on the radio frames that is numbered odd number; The Physical Random Access Channel that perhaps is numbered even number is mapped on the radio frames that is numbered odd number, and the Physical Random Access Channel that is numbered odd number is mapped on the radio frames that is numbered even number.

Preferably, D _RA=0.5 Physical Random Access Channel/10ms comprises that according to numbering to be mapped in an orderly manner the following method of employing is mapped to all Physical Random Access Channels on the 10ms radio frames with all Physical Random Access Channels: according to N on the time domain _Ind ^RASize, the first half Physical Random Access Channel is mapped on the radio frames that is numbered even number or odd number, the back half Physical Random Access Channel be mapped on the radio frames that is numbered odd number or even number, wherein, will

Physical Random Access Channel be mapped on the radio frames that is numbered even number, remaining Physical Random Access Channel is mapped on the radio frames that is numbered odd number, one of them is total in the access period at random

Individual Physical Random Access Channel; Perhaps will

Physical Random Access Channel be mapped on the radio frames that is numbered odd number, remaining Physical Random Access Channel is mapped on the radio frames that is numbered even number; Perhaps will

Physical Random Access Channel be mapped on the radio frames that is numbered even number, remaining Physical Random Access Channel is mapped on the radio frames that is numbered odd number; Perhaps will

Physical Random Access Channel be mapped on the radio frames that is numbered odd number, remaining Physical Random Access Channel is mapped on the radio frames that is numbered even number.

Preferably, D _RA＞0.5 Physical Random Access Channel/10ms comprises that according to numbering to be mapped in an orderly manner the following method of employing is mapped to all Physical Random Access Channels on the 10ms radio frames with all Physical Random Access Channels: all Physical Random Access Channels are mapped on each radio frames on the time domain.

Preferably, all Physical Random Access Channels are mapped in an orderly manner according to numbering comprise on the time domain and being mapped on its 5ms field being assigned to a Physical Random Access Channel on the 10ms radio frames, wherein, step a, when in the radio frames 1 downstream-to-upstream transfer point being arranged, all Physical Random Access Channels that are mapped in the radio frames are mapped in first field of radio frames; Step b when in the radio frames 2 downstream-to-upstream transfer points being arranged, is divided into two groups with the Physical Random Access Channel that is mapped on the radio frames, is mapped to respectively on first and second field of radio frames.

Preferably, step b specifically comprises: press N _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on first and second field, wherein, if with Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1$ (mode that renumbers can for ), Q is the quantity that is mapped to the Physical Random Access Channel on the radio frames, when leading form is 0 and D _RA≤ 3 o'clock, then order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}},$ Otherwise, order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the Physical Random Access Channel of first field and second a kind of form that field is held respectively on time domain, then with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on first field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on second field; Perhaps with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on second field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on first field.

Preferably, step b specifically comprises: press N _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on first and second field, wherein, if with Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1$ (mode that renumbers can for

), Q is the quantity that is mapped to the Physical Random Access Channel on the radio frames, when leading form is 0 and D _RA=2 o'clock, then order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}},$ Otherwise, order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the Physical Random Access Channel of first field and second a kind of form that field is held respectively on time domain, then with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on first field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on second field; Perhaps with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on second field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on first field.

Preferably, step b specifically comprises: press N _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on first and second field, wherein, if with Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1$ (mode that renumbers can for

), Q is the quantity that is mapped to the Physical Random Access Channel on the radio frames, order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the Physical Random Access Channel of first field and second a kind of form that field is held respectively on time domain, then with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on first field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on second field; Perhaps with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on second field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on first field.

Preferably, the form of Physical Random Access Channel is leading format 4, all Physical Random Access Channels is mapped in an orderly manner according to numbering comprise on the time domain and being mapped on its uplink pilot time slot being assigned to a Physical Random Access Channel on the 5ms field.

Preferably, the form of Physical Random Access Channel is leading form 0～3, all Physical Random Access Channels is mapped in an orderly manner according to numbering comprise on the time domain and will be fitted on a Physical Random Access Channel on the 5ms field by N _Ind ^RAAscending, be mapped to from front to back, circularly in the sub-frame of uplink of field, up to being assigned to till Physical Random Access Channel on the field all shine upon, and on the time domain adjacent two Physical Random Access Channels uniformly-spaced, wherein, setting is spaced apart 0; If perhaps the sub-frame of uplink number that accounts for of Physical Random Access Channel is L, the quantity that is mapped to the Physical Random Access Channel on the field is P, and the sub-frame of uplink number of current field is N _Sub-frame ^{UL, HF}, then setting is spaced apart

Preferably, the form of Physical Random Access Channel is leading form 0～3, all Physical Random Access Channels is mapped in an orderly manner according to numbering comprise on the time domain and will be fitted on a Physical Random Access Channel on the 5ms field by N _Ind ^RAAscending, be mapped to from back to front, circularly in the sub-frame of uplink of field, up to being assigned to till Physical Random Access Channel on the field all shine upon, and on the time domain adjacent two Physical Random Access Channels uniformly-spaced, wherein, setting is spaced apart 0; If perhaps the sub-frame of uplink number that accounts for of Physical Random Access Channel is L, the quantity that is mapped to the Physical Random Access Channel on the field is P, and the sub-frame of uplink number of current field is N _Sub-frame ^{UL, HF}, then setting is spaced apart

Preferably, a Physical Random Access Channel accounts for L sub-frame of uplink on time domain, all Physical Random Access Channels are mapped in an orderly manner according to numbering comprise on the frequency domain and shining upon on frequency domain one of by the following method being mapped to L the Physical Random Access Channel on the sub-frame of uplink: press N _Ind ^RAAscendingly or descending successively Physical Random Access Channel is shone upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; Press N _Ind ^RAAscendingly or descending successively Physical Random Access Channel is shone upon to both sides from the centre in the available frequencies resource, a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; Press N _Ind ^RAAscending or descending Physical Random Access Channel is shone upon to the centre from both sides in the available frequencies resource, a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; With the r of version number _RAIdentical Physical Random Access Channel shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; For each r of version number _RAAll adopt identical mapping process; The Physical Random Access Channel that the r of version number is identical shines upon to the centre from both sides in the available frequencies resource, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; All adopt identical mapping process for each r of version number.

Preferably, the Physical Random Access Channel that time-domain position is identical has W, according to N _Ind ^RAAscending or descending renumbeing is, w=0,1,2 ..., W-1 presses N _Ind ^RAAscending or descending Physical Random Access Channel is specifically comprised from both sides to centre mapping in the available frequencies resource: to be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to low frequency from high frequency the available frequencies resource w, shine upon to high frequency from low frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w, or w to be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to high frequency from low frequency in the available frequencies resource, shine upon to low frequency from high frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w; Or the first half Physical Random Access Channel is ascending or descending by w shines upon to low frequency from high frequency in the available frequencies resource, afterwards half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, or the first half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, half Physical Random Access Channel is ascending or descending by w shines upon to low frequency from high frequency in the available frequencies resource in the back, wherein with

Or Or

Or

Physical Random Access Channel be the first half, with remaining Physical Random Access Channel serve as the back half.

Preferably, version number is r _RAAnd the Physical Random Access Channel that time-domain position is identical has W, numbering is respectively w=0,1,2, ..., W-1, these time-domain positions are identical, and mapping specifically comprises also identical W the Physical Random Access Channel of version number from both sides to the centre in the available frequencies resource: to be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to low frequency from high frequency the available frequencies resource w, shine upon to high frequency from low frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w, or w to be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to high frequency from low frequency in the available frequencies resource, shine upon to low frequency from high frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w; Or the first half Physical Random Access Channel is ascending or descending by w shines upon to low frequency from high frequency in the available frequencies resource, afterwards half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, or the first half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, half Physical Random Access Channel is ascending or descending by w shines upon to low frequency from high frequency in the available frequencies resource in the back, wherein with

Or

Or

Or

Physical Random Access Channel be the first half, with remaining Physical Random Access Channel serve as the back half.

Preferably, all Physical Random Access Channels being mapped to the Physical Random Access Channel that comprises on the frequency domain being mapped on a sub-frame of uplink or the uplink pilot time slot in an orderly manner according to numbering shines upon on frequency domain by the following method: with the r of version number _RAAll Physical Random Access Channels identical, that be mapped on a sub-frame of uplink or the uplink pilot time slot shine upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, wherein, with above-mentioned steps Physical Random Access Channel is mapped to sub-frame of uplink or uplink pilot time slot on adjacent two fields, adopt different mapping orders respectively, and a Physical Random Access Channel accounts for 6 Resource Block, and the adjacent shared frequency band zero lap of two Physical Random Access Channels on frequency domain is for each r of version number _RAAll adopt identical mapping process.

Preferably, with the r of version number _RAIdentical, be mapped to all Physical Random Access Channels on a sub-frame of uplink or the uplink pilot time slot and in the available frequencies resource, from the low frequency to the high frequency or from the high frequency to the low frequency, shine upon specifically and comprise: in the even number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; In the odd number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; Or in the odd number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; In the even number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; Or shine upon according to the quantity of uplink pilot time slot in the radio frames.

Preferably, shine upon specifically according to the quantity of uplink pilot time slot in the radio frames and to comprise: the situation that two uplink pilot time slots are arranged for a radio frames, shine upon to high frequency from low frequency in the inherent available band of sub-frame of uplink in first field or uplink pilot time slot, shine upon to low frequency from high frequency in the inherent available band of sub-frame of uplink in second field or uplink pilot time slot, each radio frames adopts identical method; Or shine upon to low frequency from high frequency in sub-frame of uplink in first field or the inherent available band of uplink pilot time slot, shine upon to high frequency from low frequency in the inherent available band of sub-frame of uplink in second field or uplink pilot time slot, each radio frames adopts identical method; The situation that a uplink pilot time slot is arranged for a radio frames, in the sub-frame of uplink or uplink pilot time slot of even number radio frames, in available band, shine upon to high frequency, in the sub-frame of uplink or uplink pilot time slot of odd number radio frames, in available band, shine upon to low frequency from high frequency from low frequency; Or in the sub-frame of uplink or uplink pilot time slot of odd number radio frames, in available band, shine upon to high frequency from low frequency, in the sub-frame of uplink or uplink pilot time slot of even number radio frames, in available band, shine upon to low frequency from high frequency; Or in the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to high frequency from low frequency; Or in the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to high frequency from low frequency; Or in the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to the centre from both sides.

Preferably, the density of obtaining Physical Random Access Channel specifically comprises: directly notified by the control signaling of Physical Random Access Channel by the base station.

Preferably, the version number that obtains Physical Random Access Channel specifically comprises following at least a method: by the Physical Random Access Channel preparation kind of being sent by the base station, determine according to the version number of leading form and density combinations in the Physical Random Access Channel preparation set; The Physical Random Access Channel quantity N that version number is supported at frequency domain according to system _RA ^BW, 10ms internal conversion point quantity N _SPAnd the density D of Physical Random Access Channel _RA, by calculating

Obtain; Version number is fixed as 3.

Preferably, also be included in when using mapping algorithm, obtain the r of version number _RA, it specifically comprises: directly obtain the r of version number by the Physical Random Access Channel preparation kind of being sent by the base station _RAAnd r _RA∈ [0, R-1].

Preferably, the time domain mapping formula that all Physical Random Access Channels is mapped on the 10ms radio frames is: $t_{\mathrm{RA}}^0=\mathrm{\α}(\left(n_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}2\right)+1)$

T wherein _RA ⁰The expression Physical Random Access Channel is in which radio frames, and 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames, α=(2D _RA) mod2,

And Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with n _RA ^IndAnd the above-mentioned expression formula of α substitution, then t _RA ⁰Also can write and do

In addition, because D _RA〉=1 o'clock, α=0; D _RA=0.5 o'clock, $n_{\mathrm{RA}}^{\mathrm{ind}}=r_{\mathrm{RA}},$ So also can be write as $t_{\mathrm{RA}}^0=\left(\left(2D_{\mathrm{RA}}\right)\mathrm{mod}2\right)(1+r_{\mathrm{RA}}\mathrm{mod}2).$

Preferably, with being assigned to the time domain mapping formula that a Physical Random Access Channel on the 10ms radio frames is mapped on its 5ms field be:

$t_{\mathrm{RA}}^1=m_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}{N}_{\mathrm{SP}}$

Work as D _RA≤ 3 and leading form be 0 o'clock,

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}$

Otherwise

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

Wherein

t _RA ¹The expression Physical Random Access Channel is at which field, and 0 represents first field, and 1 represents second field, the mod2 of α=(2D),

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with α, n _RA ^Ind, n ' _RA ^Ind, N _RA ^HF(i) the above-mentioned expression formula of substitution, then m _RA ^IndAlso can be expressed as

Work as D _RA≤ 3 and leading form be 0 o'clock,

Otherwise

Preferably, with being assigned to the time domain mapping formula that a Physical Random Access Channel on the 10ms radio frames is mapped on its 5ms field be:

$t_{\mathrm{RA}}^1=m_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}{N}_{\mathrm{SP}}$

Work as D _RA=2 and leading form be 0 o'clock,

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}$

Otherwise

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

Wherein

t _RA ¹The expression Physical Random Access Channel is at which field, and 0 represents first field, and 1 represents second field, the mod2 of α=(2D),

And Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with α, n _RA ^Ind, n ' _RA ^Ind, N _RA ^HF(i) the above-mentioned expression formula of substitution, then m _RA ^IndAlso can be expressed as

Work as D _RA=2 and leading form be 0 o'clock,

Otherwise

Preferably, with being assigned to the time domain mapping formula that a Physical Random Access Channel on the 10ms radio frames is mapped on its 5ms field be:

$t_{\mathrm{RA}}^1=m_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}{N}_{\mathrm{SP}}$

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

Wherein

t _RA ¹The expression Physical Random Access Channel is at which field, and 0 represents first field, and 1 represents second field, the mod2 of α=(2D),

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with α, n _RA ^Ind, n ' _RA ^Ind, N _RA ^HF(i) the above-mentioned expression formula of substitution, then m _RA ^IndAlso can be expressed as

Preferably, with being assigned to the time domain mapping formula that a Physical Random Access Channel on the 5ms field is mapped on its sub-frame of uplink or the uplink pilot time slot be:

Wherein

t _RA ²The expression Physical Random Access Channel is mapped in field on which sub-frame of uplink (leading form 0～3) or the uplink pilot time slot (leading format 4).The mod2 of α=(2D),

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

Annotate: for leading format 4, have only a uplink pilot time slot in the field at most, so this moment $t_{\mathrm{RA}}^2=0.$

Preferably, the frequency domain mapping formula that shines upon on frequency domain is:

K wherein _RABe first available frequency domain resource piece of certain Physical Random Access Channel, and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe ascending resource piece sum; α=(2D _RA) mod2; f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index of Physical Random Access Channel, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all Physical Random Access Channels, k ' _RAFirst can be used for the position of the Resource Block of Physical Random Access Channel for low frequency, $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number be r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all Physical Random Access Channels; N _Sub-frame ^{UL, HF}(i) be the quantity of interior sub-frame of uplink (leading form 0～3) of field or uplink pilot time slot (leading format 4), i=0 is first field, and i=1 is the 2nd field; L _RAThe sub-frame of uplink number that accounts for for the PRACH channel of certain leading form (leading form 0～3) is for leading format 4, L _RA=1.

N _SPQuantity for the downstream-to-upstream transfer point; N _RA ^BWUnder current system bandwidth, the quantity of the open ended Physical Random Access Channel of frequency domain.

Preferably, the frequency domain mapping formula that shines upon on frequency domain is:

For preamble format 0～3 (form of Physical Random Access Channel is leading form 0～3)

For preamble format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}(\left(\mathrm{SFN}\mathrm{mod}2\right)\·(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

For preamble format 0～3

For preamble format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}(\left(\mathrm{SFN}\mathrm{mod}2\right)+t_{\mathrm{RA}}^1)\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for Physical Random Access Channel is leading form 0～3

Form for Physical Random Access Channel is leading format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for Physical Random Access Channel is leading form 0～4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for Physical Random Access Channel is leading form 0～4

Work as N _SP=2 o'clock,

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Work as N _SP=1 o'clock,

Perhaps

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

Work as N _SP=2 o'clock,

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Work as N _SP=1 o'clock,

K wherein _RABe first available frequency domain resource piece of certain Physical Random Access Channel, and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe ascending resource piece sum; α=(2D _RA) mod2; f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index of Physical Random Access Channel, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all Physical Random Access Channels, k ' _RAFirst can be used for the position of the Resource Block of Physical Random Access Channel for low frequency, $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number be r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all Physical Random Access Channels; N _Sub-frame ^{UL, HF}(i) be the quantity of interior sub-frame of uplink (leading form 0～3) of field or uplink pilot time slot (leading format 4), i=0 is first field, and i=1 is the 2nd field; L _RAThe sub-frame of uplink number that accounts for for the PRACH channel of certain leading form (leading form 0～3) is for leading format 4, L _RA=1.

N _SPQuantity for the downstream-to-upstream transfer point; N _RA ^BWUnder current system bandwidth, the quantity of the open ended Physical Random Access Channel of frequency domain;

t _RA ¹Equal 0 or 1, so $t_{\mathrm{RA}}^1\mathrm{mod}2=0$ Be equivalent to $t_{\mathrm{RA}}^1=0;$ $t_{\mathrm{RA}}^1\mathrm{mod}2=1$ Be equivalent to $t_{\mathrm{RA}}^1=1.$

Preferably, the frequency domain mapping formula that shines upon on frequency domain is:

For preamble format 0～3

For preamble format 4

Wherein

Perhaps

For preamble format 0～3

For preamble format 4

Wherein

K wherein _RABe first available frequency domain resource piece of certain Physical Random Access Channel, and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe ascending resource piece sum; α=(2D _RA) mod2; f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index of Physical Random Access Channel, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all Physical Random Access Channels, k ' _RAFirst can be used for the position of the Resource Block of Physical Random Access Channel for low frequency, $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number be r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all Physical Random Access Channels; N _Sub-frame ^{UL, HF}(i) be the quantity of interior sub-frame of uplink (leading form 0～3) of field or uplink pilot time slot (leading format 4), i=0 is first field, and i=1 is the 2nd field; L _RAThe sub-frame of uplink number that accounts for for the PRACH channel of certain leading form (leading form 0～3) is for leading format 4, L _RA=1.

N _SPQuantity for the downstream-to-upstream transfer point; N _RA ^BWUnder current system bandwidth, the quantity of the open ended Physical Random Access Channel of frequency domain.

The mapping method of the Physical Random Access Channel of the foregoing description has been considered density and version number's factor because adopt in the mapping, handle PRACH problem such as skewness in time so overcome same base station, and then reached to make and need same base station to handle PRACH evenly to distribute in time, can also reduce the effect of the presence of intercell interference of the second class PRACH simultaneously to greatest extent.

Embodiment

Below in conjunction with embodiment, describe the present invention in detail.

Flow process according to the method for the mapping physical random access channel of the embodiment of the invention may further comprise the steps:

Step S10 obtains the density and the version number of Physical Random Access Channel;

Step S20 makes up the density index according to density, and according to the version number build version number;

Step S30 uses density index and version number to make up the numbering of Physical Random Access Channel; And

Step S40, with all Physical Random Access Channels according to the numbering be mapped in an orderly manner time domain and or frequency domain on.

This mapping method has been considered density and version number's factor because adopt in the mapping, handle PRACH problem such as skewness in time so overcome same base station, and then reached to make and need same base station to handle PRACH evenly to distribute in time, can also reduce the effect of the presence of intercell interference of the second class PRACH simultaneously to greatest extent.

In order to describe the present invention better, carry out following definitions, do not constitute limitation of the invention.

The density of definition PRACH is D, and version number is R, then has in the access period at random at one Individual PRACH needs numbering, promptly

Wherein, D represents to use the sub-district of this density to have what PRACH to use in the access period at random at one, for example D=n PRACH/10ms represents to have in the access period at random of each 10ms n PRACH can use (if n=0.5, then representing in the access period at random of each 20ms has 1 PRACH to use).If suppose certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district), and

Version number is r, and r=0,1 ..., R-1, then whole mapping algorithm are divided into PRACH numbering, time-domain position mapping, frequency domain position and shine upon three parts, and preferentially carry out the time-domain position mapping during mapping, and then carry out the frequency domain position mapping.

◆ the PRACH numbering:

■ method 1

Increase progressively density index, increment version again during numbering earlier;

If according to top definition,

Wherein

r＝0，1，...，R-1。

■ method 2

Elder generation's increment version increases progressively the density index again during numbering;

If according to top definition, $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{dR}+r,$ Wherein

r＝0，1，...，R-1。

In addition, when selecting D, also need to satisfy

N wherein _t ^RABe the PRACH quantity of a current format that can hold on the time domain in the access period at random, N _RA ^BWBe the PRACH quantity that to hold on the available frequency resources.

◆ the time domain mapping comprises

■ radio frames mapping: all PRACH are mapped on the 10ms radio frames.

When D=0.5 PRACH/10ms

● method 1

By numbering (N _Ind ^RA) ascending or descending, the compartment of terrain is mapped to PRACH on the radio frames that is numbered even number and odd number.

√ method 1.1

Numbering (N _Ind ^RA) be mapped on the radio frames that is numbered even number for the PRACH of even number, the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

√ method 1.2

Numbering (N _Ind ^RA) be mapped on the radio frames that is numbered odd number for the PRACH of even number, the PRACH that is numbered odd number is mapped on the radio frames that is numbered even number;

● method 2

According to numbering (N _Ind ^RA) size, the first half PRACH is mapped on the radio frames that is numbered even number or odd number, the back half PRACH be mapped on the radio frames that is numbered odd number or even number.

√ method 21

Will

PRACH be mapped on the radio frames that is numbered even number, remaining PRACH is mapped on the radio frames that is numbered odd number;

√ method 2.2

Will PRACH be mapped on the radio frames that is numbered odd number, remaining PRACH is mapped on the radio frames that is numbered even number;

√ method 2.3

Will

PRACH be mapped on the radio frames that is numbered even number, remaining PRACH is mapped on the radio frames that is numbered odd number;

√ method 2.4

Will

PRACH be mapped on the radio frames that is numbered odd number, remaining PRACH is mapped on the radio frames that is numbered even number.

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

■ field mapping: will be assigned to a PRACH on the radio frames and be mapped on the 5ms field;

When in the radio frames 1 downstream-to-upstream transfer point being arranged

Be mapped in first field and (be equivalent to " field at downstream-to-upstream transfer point place " or " field at sub-frame of uplink place ") being mapped to all PRACH in this radio frames.

When in the radio frames 2 downstream-to-upstream transfer points being arranged

The PRACH that is mapped on this radio frames is divided into two groups, is mapped to respectively on first and second field.

● method 1

For the PRACH that is mapped on this radio frames, by numbering (N _Ind ^RA) ascending or descending, the compartment of terrain is mapped to PRACH on first and second field.

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.For example, for preamble format 0, if D: U=3: 5, then first field can hold 3 PRACH on time domain, promptly $N_{\mathrm{RA}}^{\mathrm{HF}}\left(0\right)=3,$ Second field can hold 2 PRACH on time domain, promptly $N_{\mathrm{RA}}^{\mathrm{HF}}\left(0\right)=2.$ For another example, for preamble format 4, if the transfer point of 2 downstream-to-upstreams is arranged in 10ms, then each field has a UpPTS, then $N_{\mathrm{RA}}^{\mathrm{HF}}\left(0\right)=N_{\mathrm{RA}}^{\mathrm{HF}}\left(1\right)=1.$

Then concrete method can be:

√ method 1.1

With M _Ind ^RAFor the PRACH of even number is mapped on first field M _Ind ^RAFor the PRACH of odd number is mapped on second field;

√ method 1.2

M _Ind ^RAFor the PRACH of even number is mapped on second field M _Ind ^RAFor the PRACH of odd number is mapped on first field.

● method 2

For the PRACH that is mapped on this radio frames, by numbering (N _Ind ^RA) size, the first half PRACH is mapped on first or second field, will the back half PRACH be mapped to second or first field on;

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.

Then when D＞0.5 PRACH/10ms, concrete method can be

√ method 2.1

PRACH be mapped on first field, remaining PRACH is mapped on second field on this radio frames;

√ method 2.2

PRACH be mapped on first field, remaining PRACH is mapped on second field on this radio frames;

√ method 2.3

PRACH be mapped on second field, remaining PRACH is mapped on first field on this radio frames;

√ method 2.4

PRACH be mapped on second field, remaining PRACH is mapped on first field on this radio frames;

When D=0.5 PRACH/10ms, concrete method can be

√ method 2.5

Will PRACH be mapped on first field, remaining PRACH on this radio frames is mapped on second field;

√ method 2.6

Will

PRACH be mapped on second field, remaining PRACH on this radio frames is mapped on first field;

√ method 2.7

Will

PRACH be mapped on first field, remaining PRACH on this radio frames is mapped on second field;

√ method 2.8

Will

PRACH be mapped on second field, remaining PRACH on this radio frames is mapped on first field;

● method 3

PRACH for being mapped on this radio frames presses N _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on first and second field, wherein, if with Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1$ (mode that renumbers can for

), Q is the quantity that is mapped to the Physical Random Access Channel on the radio frames, when leading form is 0 and D _RA≤ 3 o'clock, then order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}},$ Otherwise, order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the Physical Random Access Channel of first field and second a kind of form that field is held respectively on time domain, then with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on first field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on second field; Perhaps with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on second field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on first field.Perhaps

PRACH for being mapped on this radio frames presses N _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on first and second field, wherein, if with Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1$ (mode that renumbers can for

), Q is the quantity that is mapped to the Physical Random Access Channel on the radio frames, when leading form is 0 and D _RA=2 o'clock, then order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}},$ Otherwise, order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the Physical Random Access Channel of first field and second a kind of form that field is held respectively on time domain, then with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on first field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on second field; Perhaps with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on second field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on first field.Perhaps

PRACH for being mapped on this radio frames presses N _Ind ^RAAscending or descending, the compartment of terrain is mapped to Physical Random Access Channel on first and second field, wherein, if with Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1$ (mode that renumbers can for

), Q is the quantity that is mapped to the Physical Random Access Channel on the radio frames, order $M_{\mathrm{RA}}^{\mathrm{ind}}=N_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the Physical Random Access Channel of first field and second a kind of form that field is held respectively on time domain, then with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on first field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on second field; Perhaps with M _Ind ^RAFor the Physical Random Access Channel of even number is mapped on second field M _Ind ^RAFor the Physical Random Access Channel of odd number is mapped on first field.Perhaps

For example, for preamble format 0, if D: U=3: 5, then first field can hold 3 PRACH on time domain, promptly $N_{\mathrm{RA}}^{\mathrm{HF}}\left(0\right)=3,$ Second field can hold 2 PRACH on time domain, promptly $N_{\mathrm{RA}}^{\mathrm{HF}}\left(0\right)=2.$ For another example, for preamble format 4, if the transfer point of 2 downstream-to-upstreams is arranged in 10ms, then each field has a UpPTS, then $N_{\mathrm{RA}}^{\mathrm{HF}}\left(0\right)=N_{\mathrm{RA}}^{\mathrm{HF}}\left(1\right)=1.$

Then concrete method can be:

√ method 3.1

With M _Ind ^RAFor the PRACH of even number is mapped on first field M _Ind ^RAFor the PRACH of odd number is mapped on second field;

√ method 3.2

M _Ind ^RAFor the PRACH of even number is mapped on second field M _Ind ^RAFor the PRACH of odd number is mapped on first field.

■ subframe mapping: will be assigned to a PRACH on the field and be mapped on the sub-frame of uplink;

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

● method 1

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from front to back, circularly, up to being assigned to till PRACH on this field all shone upon, and adjacent two PRACH are uniformly-spaced on the time domain.

The interval of adjacent two PRACH refers to the interval between the starting position of first sub-frame of uplink at the end position of last sub-frame of uplink at previous PRACH place and a back PRACH place on the time domain.

" circulation mapping " refers to if remaining sub-frame of uplink can not hold a PRACH, then come back to the starting position of mapping in the process of in the past shining upon backward, in the past mapping backward.

√ method 1.1

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from front to back, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

√ method 1.2

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from front to back, circularly.If the sub-frame of uplink number that PRACH accounts for is L, the quantity that is mapped to the PRACH on this field is P, and the sub-frame of uplink number of current field is N _Sub-frame ^{UL, HF}, then two adjacent PRACH are spaced apart on the time domain

● method 2

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, up to being assigned to till PRACH on this field all shone upon, and adjacent two PRACH are uniformly-spaced on the time domain.

The interval of adjacent two PRACH refers to the interval between the end position of last sub-frame of uplink at the starting position of first sub-frame of uplink at previous PRACH place and a back PRACH place on the time domain.

" circulation mapping " refer to from after forward the process of mapping, if remaining sub-frame of uplink can not hold a PRACH, then come back to the starting position of mapping, from after mapping forward.

√ method 2.1

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

√ method 2.2

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly.If the sub-frame of uplink number that PRACH accounts for is L, the quantity that is mapped to the PRACH on this field is P, and the sub-frame of uplink number of current field is N _Sub-frame ^{UL, HF}, then two adjacent PRACH are spaced apart on the time domain

◆ frequency domain mapping a: if PRACH accounts for L sub-frame of uplink (promptly on time domain, the time-domain position that is mapped to the Physical Random Access Channel on this L sub-frame of uplink is identical), the PRACH that is mapped on this L sub-frame of uplink is shone upon (for preamble format 4, the sub-frame of uplink here is UpPTS) on frequency domain

● method one

By numbering (N _Ind ^RA) ascendingly or descending successively PRACH is shone upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, a PRACH accounts for 6 RB, and on frequency domain the adjacent shared frequency band zero lap of two PRACH.

● method two

By numbering (N _Ind ^RA) ascendingly or descending successively PRACH is shone upon to both sides from the centre in the available frequencies resource, a PRACH accounts for 6 RB, and on frequency domain the adjacent shared frequency band zero lap of two PRACH.

● method three

Can be used for transmitting in the frequency domain resource of PRACH, the PRACHs that the r of version number is identical, shine upon from the low frequency to the high frequency or from the high frequency to the low frequency, a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.

Such as, $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,4,6,8},$ Wherein 0,6, the corresponding r of version number is identical, and 4,8, the corresponding r of version number is identical, and then 0,6 shines upon from the low frequency to frequency modulation; 4,8 shine upon from the low frequency to the high frequency too, final, and 0 is identical with 4 frequency domain position, and 6 is identical with 8 frequency domain position.

● method four

The Physical Random Access Channel that the r of version number is identical shines upon to the centre from both sides in can be used for transmitting the frequency domain resource of PRACH.

Suppose to be mapped on this L subframe that version number is that the Physical Random Access Channel of r has W, be numbered, w=0,1,2 ..., W-1, then mapping method can for:

W is shining upon to low frequency (or high frequency) from high frequency (or low frequency) in available band of even number, be in available band, shining upon to high frequency (or low frequency) of odd number from low frequency (or high frequency), and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number; Or

The first half (

Or Or

Or ) PRACH shines upon to low frequency (or high frequency) from high frequency (or low frequency) in available band, half PRACH of back shines upon to high frequency (or low frequency) from low frequency (or high frequency) in available band, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number; Such as, the PRACH form is preamble format 0, then L=1, then index $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,4,6,8},9,10$ PRACH be mapped to some sub-frame of uplink, wherein 0,4,6, the corresponding identical r=0 of version number, 8,9,10, the corresponding identical r=1 of version number, for r=0, w=0,1,2 for 0,4,6; For r=1, w=0,1,2 correspondence 8,9,10.If be in available band, from the low frequency to the high frequency, shining upon of odd number then, be in available band, shining upon to low frequency of even number, wherein N from high frequency with w with w _Ind ^RABe that 0,8 PRACH frequency domain position is identical; N _Ind ^RABe that 4,9 PRACH frequency domain position is identical; N _Ind ^RABe that 6,10 PRACH frequency domain position is identical.

● method five

Press N _Ind ^RAAscendingly or descending in the available frequencies resource, shine upon to the centre from both sides.For example, the Physical Random Access Channel that is mapped on this L subframe has W, according to N _Ind ^RAAscending or descending renumbeing is, w=0,1,2 ..., W-1, then mapping method can for

W is shining upon to low frequency (or high frequency) from high frequency (or low frequency) in available band by w is ascending or descending of even number, press for odd number that w is ascending or descending to be shone upon to high frequency (or low frequency) from low frequency (or high frequency) in available band, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; Or

The first half (

Or

Or

Or ) PRACH presses that w is ascending or descending to be shone upon to low frequency (or high frequency) from high frequency (or low frequency) in available band, half PRACH of back presses that w is ascending or descending to be shone upon to high frequency (or low frequency) from low frequency (or high frequency) in available band, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.

● method six

All Physical Random Access Channels r of version number is identical, that be mapped on a sub-frame of uplink or the UpPTS shine upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, and sub-frame of uplink on adjacent two fields or the different mapping order of UpPTS employing.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number; Concrete mapping method is

In the even number radio frames, the sub-frame of uplink of first field or UpPTS shine upon to high frequency from the low frequency of available band; The sub-frame of uplink of second field or UpPTS shine upon to low frequency from the high frequency of available band; In the odd number radio frames, the sub-frame of uplink of first field or UpPTS shine upon to low frequency from the high frequency of available band; The sub-frame of uplink of second field or UpPTS shine upon to high frequency from the low frequency of available band; Or

In the odd number radio frames, the sub-frame of uplink of first field or UpPTS shine upon to high frequency from the low frequency of available band; The sub-frame of uplink of second field or UpPTS shine upon to low frequency from the high frequency of available band; In the even number radio frames, the sub-frame of uplink of first field or UpPTS shine upon to low frequency from the high frequency of available band; The sub-frame of uplink of second field or UpPTS shine upon to high frequency from the low frequency of available band; Or

Quantity according to UpPTS in the radio frames is shone upon

For a radio frames situation of two UpPTS is arranged,

Shine upon to high frequency from low frequency in the inherent available band of sub-frame of uplink in first field or UpPTS, shine upon to low frequency from high frequency in sub-frame of uplink in second field or the inherent available band of UpPTS, each radio frames adopts identical mapping method; Or

Shine upon to low frequency from high frequency in the inherent available band of sub-frame of uplink in first field or UpPTS, shine upon to high frequency from low frequency in sub-frame of uplink in second field or the inherent available band of UpPTS, each radio frames adopts identical mapping method;

The situation that a UpPTS is arranged for a radio frames

In the sub-frame of uplink or UpPTS of even number radio frames, in available band, shine upon to high frequency from low frequency, in the sub-frame of uplink or UpPTS of odd number radio frames, in available band, shine upon to low frequency from high frequency; Or

In the sub-frame of uplink or UpPTS of odd number radio frames, in available band, shine upon to high frequency from low frequency, in the sub-frame of uplink or UpPTS of even number radio frames, in available band, shine upon to low frequency from high frequency; Or

In the sub-frame of uplink or UpPTS of all radio frames, in available band, shine upon to high frequency from low frequency; Or

In the sub-frame of uplink or UpPTS of all radio frames, in available band, shine upon to high frequency from low frequency; Or

In the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to the centre from both sides.

For common sub-frame of uplink, the available frequency domain resource of PRACH refers in all available frequency domain resources of current system except by the frequency resource the shared frequency resource of PUCCH, or all available frequencies resources of current system; For UpPTS, the available frequency domain resource of PRACH refers to all available frequency resources of current system, or in all available frequency domain resources except by the frequency resource the shared frequency resource of the PUCCH in the common sub-frame of uplink.

Density D is directly notified mobile phone by the base station by the control signaling of PRACH;

Version number R has three kinds of methods to obtain.

√ determines according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; Or

The PRACH quantity N that the √ version number is supported at frequency domain according to system _RA ^BW, 10ms internal conversion point quantity N _SPAnd the density D of PRACH, through type

Obtain;

The √ version number is

Promptly limiting its maximum is 3; The r of version number has two kinds of methods to obtain

√ directly obtains by the PRACH preparation kind of being issued mobile phone by the base station;

√ is according to sub-district ID calculated version number, promptly $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R;$

√ and r ∈ [0, R-1]

When utilizing method provided by the invention to carry out PRACH, frequently location map can make and need same base station to handle PRACH evenly to distribute in time, can also reduce by the presence of intercell interference of the second class PRACH simultaneously to greatest extent.

Embodiment one

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district, ); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1;

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number,

The PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein;

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAModN _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～4

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So

t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' _RAFor low frequency first can be used for the RB of PRACH the position ( $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6]$ ), N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the frame; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

In addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4, N _RA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station; For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain by the PRACH preparation kind of issuing mobile phone by the base station.r∈[0，R-1]

Illustrate the mapping result of present embodiment

If R=3, D=4, the form of PRACH are preamble format 0, D: U=1: 3, then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,11$ Respectively corresponding (0,0), (0,1), (0,2), (0,3), (1,0), (1,1), (1,2), (1,3), (2,0), (2,1), (2,2), (2,3). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,1}\right)=0$ Corresponding (0,2), $f_{\mathrm{RA}}^2\left(\mathrm{0,0,1}\right)=0$ Corresponding (2,0), $f_{\mathrm{RA}}^0\left(\mathrm{0,0,2}\right)=0$ Corresponding (0,0), $f_{\mathrm{RA}}^1\left(\mathrm{0,0,2}\right)=0$ Corresponding (1,2), $f_{\mathrm{RA}}^1\left(\mathrm{0,0,0}\right)=0$ Corresponding (1,0), $f_{\mathrm{RA}}^2\left(\mathrm{0,0,0}\right)=0$ Corresponding (2,2), $f_{\mathrm{RA}}^0\left(\mathrm{0,1,1}\right)=0$ Corresponding (0,3), $f_{\mathrm{RA}}^2(0,\mathrm{1,1})=0$ Corresponding (2,1), $f_{\mathrm{RA}}^0\left(\mathrm{0,1,2}\right)=0$ Corresponding (0,1), $f_{\mathrm{RA}}^1\left(\mathrm{0,1,2}\right)=0$ Corresponding (1,3), $f_{\mathrm{RA}}^1\left(\mathrm{0,1,0}\right)=0$ Corresponding (1,1), $f_{\mathrm{RA}}^2\left(\mathrm{0,1,0}\right)=0$ Corresponding (2,3).k′ _RA＝1。The time, frequently the frequency domain position of (0,0) (1,2) is identical among the location map result; The frequency domain position of (0,2) (2,0) is identical; The frequency domain position of (1,1) (2,3) is identical; The frequency domain position of (0,3) (2,1) is identical; The frequency domain position of (1,3) (0,1) is identical; The frequency domain position of (1,0) (2,2) is identical;

If R=1, D=4, the form of PRACH are preamble format 4, D: U=1: 3, then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,3$ Respectively corresponding (0,0), (0,1), (0,2), (0,3). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Respectively corresponding (0,0), (0,2) or (0,2), (0,0), and $N_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=2;$ $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Respectively corresponding (0,1), (0,3) or (0,3), (0,1), and $N_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=2.$ k′ _RA＝0。

Embodiment two

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1.

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein;

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～3

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number;

For preamble format 4

The Physical Random Access Channel r of version number is identical, that be mapped on certain UpPTS shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in can be used for sending the frequency resource of Physical Random Access Channel, and adjacent two UpPTS adopt different mapping orders.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.Specifically

For a radio frames situation of two UpPTS is arranged,

First UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to high frequency from low frequency, and second UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to low frequency from high frequency;

For a radio frames situation of a UpPTS is arranged,

In the UpPTS of even number radio frames, in can be used for sending the frequency resource of Physical Random Access Channel, shine upon to high frequency from low frequency, in the UpPTS of odd number radio frames, in can be used for sending the frequency resource of Physical Random Access Channel, shine upon to low frequency from high frequency.

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～3

For preamble format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}(\left(\mathrm{SFN}\mathrm{mod}2\right)\·(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' _RAFirst can be used for PRACH's for low frequency $\mathrm{RB}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right),$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ SFN is System Frame Number or is called radio frame number (System Frame Number) in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4, N _RA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be Or by issuing the PRACH preparation kind of mobile phone by the base station,

Version number according to preamble format and density combinations in the PRACH preparation set is determined.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station; For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain r ∑ ∈ [0, R-1] by the PRACH preparation kind of issuing mobile phone by the base station.

Illustrate the mapping result of present embodiment

If R=1, D=3, the form of PRACH are preamble format 4, D: U=8: 2 (downstream-to-upstream transfer point, i.e. N _SP=1), then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,2$ Respectively corresponding (0,0), (0,1), (0,2). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1,2}$ Corresponding version number is these three PRACH of 0, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1,2}$ Can distinguish correspondence (0,0), (0,1), (0,2) also can distinguish correspondence (0,0), (0,2), (0,1).k′ _RA＝0。

If R=1, D=4, the form of PRACH are preamble format 4, D: U=1: 3, then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,3$ Respectively corresponding (0,0), (0,1), (0,2), (0,3). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Corresponding version number is 0, is mapped to two PRACH of UpPTS in first field, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Can distinguish correspondence (0,0), (0,2) or (0,2), (0,0). $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Corresponding version number is 0, is mapped to two PRACH of UpPTS in second field, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Can distinguish correspondence (0,1), (0,3) or (0,3), (0,1).k′ _RA＝0。

Embodiment three

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district, Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly Wherein

R=0,1 ..., R-1.

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein.

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～3

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.

For preamble format 4

The Physical Random Access Channel r of version number is identical, that be mapped on certain UpPTS shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in can be used for sending the frequency resource of Physical Random Access Channel, and adjacent two UpPTS adopt different mapping orders.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.Specifically

In the even number radio frames, the UpPTS of first field shines upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel; The UpPTS of second field shines upon to low frequency from high frequency in can be used for sending the frequency resource of Physical Random Access Channel; In the odd number radio frames, the UpPTS of first field shines upon to low frequency from high frequency in can be used for sending the frequency resource of Physical Random Access Channel; The UpPTS of second field shines upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel.

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{\mathrm{ind}}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～3

For preamble format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}(\left(\mathrm{SFN}\mathrm{mod}2\right)+t_{\mathrm{RA}}^1)\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ M _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' _RAFirst can be used for PRACH's for low frequency $\mathrm{RB}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right),$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ SFN is System Frame Number or is called radio frame number (System Frame Number) in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or by issuing the PRACH preparation kind of mobile phone by the base station,

Version number according to preamble format and density combinations in the PRACH preparation set is determined.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station.For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain r ∈ [0, R-1] by the PRACH preparation kind of issuing mobile phone by the base station.

√ illustrates the mapping result of present embodiment

If √ is R=1, D=3, the form of PRACH are preamble format 4, D: U=8: 2 (downstream-to-upstream transfer point, i.e. N _SP=1), then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,2$ Respectively corresponding (0,0), (0,1), (0,2). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1,2}$ Corresponding version number is these three PRACH of 0, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1,2}$ Can distinguish correspondence (0,0), (0,1), (0,2) also can distinguish correspondence (0,0), (0,2), (0,1).k′ _RA＝0。

If √ is R=1, D=4, the form of PRACH are preamble format 4, D: U=1: 3, then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,3$ Respectively corresponding (0,0), (0,1), (0,2), (0,3). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Corresponding version number is 0, is mapped to two PRACH of UpPTS in first field, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Can distinguish correspondence (0,0), (0,2) or (0,2), (0,0). $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Corresponding version number is 0, is mapped to two PRACH of UpPTS in second field, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Can distinguish correspondence (0,1), (0,3) or (0,3), (0,1).k′ _RA＝0。

Embodiment four

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1;

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein;

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～3

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.

For preamble format 4

Suppose that the Physical Random Access Channel that is mapped on certain UpPTS has W, according to N _Ind ^RAAscending renumbeing is, w=0,1,2 ..., W-1, then mapping method can for

W is shining upon to high frequency from low frequency by w is ascending in available band of even number, be in available band, shining upon to low frequency from high frequency of odd number by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～3

For preamble format 4

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1]$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field;

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _LRA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be that form is the frequency domain map index (numbering of PRACH on the frequency domain) of the PRACH of preamble format 0～3, and have $f_{\mathrm{LRA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{LRA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ f _SRA ^rBe that form is the frequency domain map index (numbering of PRACH on the frequency domain) of the PRACH of preamble format 4, and have

√ k ' _RAFirst can be used for PRACH's for low frequency $\mathrm{RB}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right);$

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS;

√ in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station; For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain r ∈ [0, R-1] by the PRACH preparation kind of issuing mobile phone by the base station.

Embodiment five

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1;

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein;

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～3

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number;

For preamble format 4

Suppose that the Physical Random Access Channel that is mapped on certain UpPTS has W, according to N _Ind ^RAAscending renumbeing is, w=0,1,2 ..., W-1, then mapping method can for

W is shining upon to high frequency from low frequency by w is ascending in available band of even number, be in available band, shining upon to low frequency from high frequency of odd number by w is descending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～3

For preamble format 4

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1].

√ f _LRA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be that form is the frequency domain map index (numbering of PRACH on the frequency domain) of the PRACH of preamble format 0～3, and have $f_{\mathrm{LRA}}^r(f_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{LRA}}^r(f_{\mathrm{RA}}^0,f_{\mathrm{RA}}^1,f_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ f _SRA ^rBe that form is the frequency domain map index (numbering of PRACH on the frequency domain) of the PRACH of preamble format 4, and have

√ k ' _RAFirst can be used for PRACH's for low frequency $(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right).$

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station; For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain r ∈ [0, R-1] by the PRACH preparation kind of issuing mobile phone by the base station.

Embodiment six

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1.

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $M_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein.

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～3

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.

For preamble format 4

The Physical Random Access Channel r of version number is identical, that be mapped on certain UpPTS shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in can be used for sending the frequency resource of Physical Random Access Channel, and adjacent two UpPTS adopt different mapping orders.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.Specifically

For a radio frames situation of two UpPTS is arranged,

First UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to high frequency from low frequency, and second UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to low frequency from high frequency;

For a radio frames situation of a UpPTS is arranged,

In the uplink pilot time slot of all radio frames, in available band, shine upon to high frequency from low frequency;

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～3

For preamble format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,r_{\mathrm{RA}}^2)& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^f(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' _RAFirst can be used for PRACH's for low frequency $\mathrm{RB}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right),$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ t _RA ¹Equal 0 or 1, so $t_{\mathrm{RA}}^1\mathrm{mod}2=0$ Be equivalent to $t_{\mathrm{RA}}^1=0;$ $t_{\mathrm{RA}}^1\mathrm{mod}2=1$ Be equivalent to $t_{\mathrm{RA}}^1=1$

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station.For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain by the PRACH preparation kind of issuing mobile phone by the base station.r∈[0，R-1]

√ illustrates the mapping result of present embodiment

If √ is R=1, D=4, the form of PRACH are preamble format 4, D: U=1: 3, then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,3$ Respectively corresponding (0,0), (0,1), (0,2), (0,3). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Corresponding version number is 0, is mapped to two PRACH of UpPTS in first field, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1}$ Can distinguish correspondence (0,0), (0,2) or (0,2), (0,0). $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Corresponding version number is 0, is mapped to two PRACH of UpPTS in second field, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,1,0}\right)=\mathrm{0,1}$ Can distinguish correspondence (0,1), (0,3) or (0,3), (0,1).k′ _RA＝0。

If √ is R=1, D=3, the form of PRACH are preamble format 4, D: U=8: 2 (downstream-to-upstream transfer point, i.e. N _SP=1), then $N_{\mathrm{ind}}^{\mathrm{RA}}=\mathrm{0,1},...,2$ Respectively corresponding (0,0), (0,1), (0,2). $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1,2}$ Corresponding version number is these three PRACH of 0, and corresponding relation can be arbitrarily, such as $f_{\mathrm{RA}}^0\left(\mathrm{0,0,0}\right)=\mathrm{0,1,2}$ Can distinguish correspondence (0,0), (0,1), (0,2) also can distinguish correspondence (0,0), (0,2), (0,1).k′ _RA＝0。

Embodiment seven

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1.

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein.

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～4

The Physical Random Access Channel r of version number is identical, that be mapped on a sub-frame of uplink or the UpPTS shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in can be used for sending the frequency resource of Physical Random Access Channel, and the sub-frame of uplink on adjacent two fields or UpPTS adopt different mapping orders.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.Specifically

For a radio frames situation of two UpPTS is arranged,

Sub-frame of uplink in first field or UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to high frequency from low frequency, and sub-frame of uplink in second field or UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to low frequency from high frequency;

For a radio frames situation of a UpPTS is arranged,

In the sub-frame of uplink or UpPTS of all radio frames, in available band, shine upon to high frequency from low frequency;

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' _RAFirst can be used for PRACH's for low frequency $\mathrm{RB}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right),$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ t _RA ¹Equal 0 or 1, so $t_{\mathrm{RA}}^1\mathrm{mod}2=0$ Be equivalent to $t_{\mathrm{RA}}^1=0;$ $t_{\mathrm{RA}}^1\mathrm{mod}2=1$ Be equivalent to $t_{\mathrm{RA}}^1=1$

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF (}I) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station.For preamble format 4, ${r=N}_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain by the PRACH preparation kind of issuing mobile phone by the base station.r∈[0，R-1]

Embodiment eight

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein R=0,1 ..., R-1.

● the time domain mapping

The radio frames mapping

When D=0.5 PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be

The mod2 of α=(2D) wherein.

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～4

The Physical Random Access Channel r of version number is identical, that be mapped on a sub-frame of uplink or the UpPTS shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in can be used for sending the frequency resource of Physical Random Access Channel, and the sub-frame of uplink on adjacent two fields or UpPTS adopt different mapping orders.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.Specifically

For a radio frames situation of two UpPTS is arranged,

Sub-frame of uplink in first field or UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to high frequency from low frequency, and sub-frame of uplink in second field or UpPTS inherence can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to low frequency from high frequency;

For a radio frames situation of a UpPTS is arranged,

In the sub-frame of uplink or UpPTS of all radio frames, in available band, shine upon to the centre from both sides

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

For preamble format 0～4

Work as N _SP=2 o'clock

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Work as N _SP=1 o'clock

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is

D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' RA be low frequency first can be used for PRACH's $\mathrm{RB}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right),$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ t _RA ¹Equal 0 or 1, so $t_{\mathrm{RA}}^1\mathrm{mod}2=0$ Be equivalent to $t_{\mathrm{RA}}^1=0;$ $t_{\mathrm{RA}}^1\mathrm{mod}2=1$ Be equivalent to $t_{\mathrm{RA}}^1=1$

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station.For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain r ∈ [0, R-1] by the PRACH preparation kind of issuing mobile phone by the base station.

Embodiment nine

The density of supposing PRACH is D (D can get 0.5,1,2,3,4,5,6 or 10PRACH/10ms); Version number is R; Be numbered

Certain sub-district one at random in the access period index of available PRACH be d (can be described as PRACH index or density index in the sub-district,

); Version number is r (r ∈ [0, R-1]); The number of downstream-to-upstream transfer point is N in the 10ms radio frames _SPCertain form PRACH quantity that time domain is held in the field is N _RA ^HF(i).

● PRACH numbering: increase progressively the density index during numbering earlier, increment version again, promptly

Wherein

R=0,1 ..., R-1.

● the time domain mapping

The radio frames mapping

When D=0.5PRACH/10ms

N _Ind ^RA(or r) is mapped to for the PRACH of even number on the radio frames that is numbered even number, and the PRACH that is numbered odd number is mapped on the radio frames that is numbered odd number;

When D＞0.5 PRACH/10ms

All PRACH are mapped on each radio frames.

The field mapping

If will be mapped to PRACH on this radio frames according to its numbering (N _Ind ^RA) ascending renumbeing, obtain $N_{\mathrm{ind}}^{\′\mathrm{RA}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the PRACH on this radio frames.The algorithm that renumbers can be The mod2 of α=(2D) wherein.

Order $M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the PRACH of first field and second certain form that field is held respectively on time domain.

Then with M _Ind ^RAMod N _SPFor the PRACH of even number is mapped to first field, be second field that be mapped to of odd number;

The subframe mapping

For preamble format 4,

All PRACH that are assigned on this field are mapped on the UpPTS of this field;

For preamble format 0～3,

By numbering (N _Ind ^RA) ascending, the PRACH that is assigned on this field is mapped in the sub-frame of uplink of this field from back to front, circularly, and two adjacent PRACH are spaced apart 0 on the time domain.

● the frequency domain mapping

For preamble format 0～3

The Physical Random Access Channel that time-domain position and the r of version number is identical shines upon to the centre from both sides in can be used for sending the frequency resource of Physical Random Access Channel.

Suppose that time-domain position is identical, and version number is that the Physical Random Access Channel of r has W, numbering is respectively w=0,1,2, ..., W-1, then mapping method is that w is shining upon to high frequency from low frequency in can be used for sending the frequency resource of Physical Random Access Channel by w is ascending of even number, be in can be used for sending the frequency resource of Physical Random Access Channel, shining upon to low frequency of odd number from high frequency by w is ascending, and a Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number;

For preamble format 4

The r of version number is identical, be mapped to a Physical Random Access Channel on the UpPTS and in can be used for sending the frequency resource of Physical Random Access Channel, from the low frequency to the high frequency or from the high frequency to the low frequency, shine upon, and the UpPTS on adjacent two fields adopts different mapping orders.A Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels.All adopt identical mapping process for each r of version number.Specifically

For a radio frames situation of two UpPTS is arranged,

UpPTS inherence in first field can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to high frequency from low frequency, and the UpPTS inherence in second field can be used for sending in the frequency resource of Physical Random Access Channel to be shone upon to low frequency from high frequency;

For a radio frames situation of a UpPTS is arranged,

In the UpPTS of all radio frames, in available band, shine upon to the centre from both sides

Above-mentioned mapping principle can be used following equation expression:

Time domain mapping formula:

$M_{\mathrm{ind}}^{\mathrm{RA}}=N_{\mathrm{ind}}^{\′\mathrm{RA}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

$t_0^{\mathrm{RA}}=\mathrm{\α}[\left(N_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}2\right)+1]$

$t_1^{\mathrm{RA}}=M_{\mathrm{ind}}^{\mathrm{RA}}\mathrm{mod}{N}_{\mathrm{SP}}$

Frequency domain mapping formula:

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

Work as N _SP=2 o'clock,

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Work as N _SP=1 o'clock,

Wherein

√ t ₀ ^RADetermined PRACH in which radio frames, 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames; In addition, during owing to D=0.5, $N_{\mathrm{ind}}^{\mathrm{RA}}=r,$ So t ₀ ^RAAlso can be write as $t_0^{\mathrm{RA}}=\mathrm{\α}[\left(r\mathrm{mod}2\right)+1].$

√ t ₁ ^RADetermined PRACH at which field, 0 represents first field, and 1 represents second field.

√ t ₂ ^RARepresent the original position of PRACH in certain field, promptly from which sub-frame of uplink (, also can not need this amount), for example so form is the PRACH of preambleformat 4 owing to have only a UpPTS at most in a field $t_2^{\mathrm{RA}}=0$ Expression is since the 1st sub-frame of uplink.

√ k _RABe first available frequency domain resource piece of certain Physical Random Access Channel (RB, Resource Block), and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe up RB sum.

The mod2 of √ α=(2D); Density index (or be called in the sub-district access chance index) is D is the density of Physical Random Access Channel, passes through the signaling mobile phone by the base station.

√ r is the version index of certain sub-district, and r ∈ [0, R-1]

√ f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index (numbering of PRACH on the frequency domain) of certain form PRACH, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all PRACH, k ' _RAFirst can be used for PRACH's for low frequency $\mathrm{BR}(k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6\left]\right),$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version index is r, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all PRACH.

√ t _RA ¹Equal 0 or 1, so $t_{\mathrm{RA}}^1\mathrm{mod}2=0$ Be equivalent to $t_{\mathrm{RA}}^1=0;$ $t_{\mathrm{RA}}^1\mathrm{mod}2=1$ Be equivalent to $t_{\mathrm{RA}}^1=1$

√ is the PRACH of preamble format 0～3 for form, and L is the shared sub-frame of uplink quantity of this form PRACH, N _Sub-frame ^{UL, HF}(i) be the quantity of sub-frame of uplink in the field; For preamble format 4, L=1, N _Sub-frame ^{UL, HF}(i) be the number (1 or 0) of UpPTS in the field, i=0 is first field, and i=1 is the 2nd field, and

√ N _SPBe the quantity of downstream-to-upstream transfer point, it equals the quantity of UpPTS.

√ in addition,

√ is for preamble format 0～3, and R can determine according to the version number of preamble format and density combinations in the PRACH preparation set by issued the PRACH preparation kind of mobile phone by the base station; For preamble format 4,

N _SRA ^BWUnder current system bandwidth, the quantity of the open ended PRACH of frequency domain; Or be

Or, determine according to the version number of preamble format and density combinations in the PRACH preparation set by issue the PRACH preparation kind of mobile phone by the base station.

√ is for preamble format 0～3, and r can directly obtain by the PRACH preparation kind of being issued mobile phone by the base station.For preamble format 4, $r=N_{\mathrm{ID}}^{\mathrm{cell}}\mathrm{mod}R,$ Or directly obtain r ∈ [0, R-1] by the PRACH preparation kind of issuing mobile phone by the base station.

From above description, as can be seen, the mapping method of the Physical Random Access Channel of the above embodiment of the present invention, adopt in the mapping and considered density and version number's factor, handle PRACH problem such as skewness in time so overcome same base station, and then can make and need handle PRACH evenly distribution in time in same base station, can also reduce by the presence of intercell interference of the second class PRACH simultaneously to greatest extent.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (29)

1. a method that is used for mapping physical random access channel is characterized in that, may further comprise the steps:

Obtain the density and the version number of Physical Random Access Channel;

According to described density structure density index with according to described version number build version number;

Use described density index and version number to make up the numbering of described Physical Random Access Channel, described density index and version number are sequentially increased progressively; And

With all described Physical Random Access Channels according to the numbering be mapped in an orderly manner time domain and or frequency domain on.

2. method according to claim 1 is characterized in that, getting access to described density is D _RA, described version number is R,

Making up the density index according to described density specifically comprises: making up described density index is

Making up described version number according to described version number is r _RA=0,1 ..., R-1;

The numbering of using described density index and version number to make up described Physical Random Access Channel specifically comprises: described numbering is set

Wherein increase progressively d earlier, increase progressively r again _RA

3. method according to claim 2 is characterized in that, the density of obtaining Physical Random Access Channel specifically comprises:

Make

N wherein _t ^RABe the quantity of the described Physical Random Access Channel of a current format that can hold on the time domain in the access period at random, N _RA ^BWQuantity for the described Physical Random Access Channel that can hold on the available frequency resources.

4. method according to claim 2 is characterized in that D _RA=0.5 Physical Random Access Channel/10ms comprises that according to numbering to be mapped in an orderly manner the following method of employing is mapped to all described Physical Random Access Channels on the 10ms radio frames with all described Physical Random Access Channels: press n on the time domain _RA ^IndAscending or descending, the compartment of terrain is mapped to described Physical Random Access Channel on the described radio frames that is numbered even number and odd number, wherein,

The described Physical Random Access Channel that is numbered even number is mapped on the described radio frames that is numbered even number, and the described Physical Random Access Channel that is numbered odd number is mapped on the described radio frames that is numbered odd number; Perhaps

The described Physical Random Access Channel that is numbered even number is mapped on the described radio frames that is numbered odd number, and the described Physical Random Access Channel that is numbered odd number is mapped on the described radio frames that is numbered even number.

5. method according to claim 2, it is characterized in that, D=0.5 Physical Random Access Channel/10ms comprises that according to numbering to be mapped in an orderly manner the following method of employing is mapped to all described Physical Random Access Channels on the 10ms radio frames with all described Physical Random Access Channels: according to n on the time domain _RA ^IndSize, the described Physical Random Access Channel of the first half is mapped on the described radio frames that is numbered even number or odd number, the back half described Physical Random Access Channel be mapped on the described radio frames that is numbered odd number or even number, wherein,

Will

Described Physical Random Access Channel be mapped on the described radio frames that is numbered even number, remaining described Physical Random Access Channel is mapped on the described radio frames that is numbered odd number, one of them is total in the access period at random

Individual described Physical Random Access Channel; Perhaps

Will

Described Physical Random Access Channel be mapped on the described radio frames that is numbered odd number, remaining described Physical Random Access Channel is mapped on the described radio frames that is numbered even number; Perhaps

Will

Described Physical Random Access Channel be mapped on the described radio frames that is numbered even number, remaining described Physical Random Access Channel is mapped on the described radio frames that is numbered odd number; Perhaps

Will

Described Physical Random Access Channel be mapped on the described radio frames that is numbered odd number, remaining described Physical Random Access Channel is mapped on the described radio frames that is numbered even number.

6. method according to claim 2 is characterized in that D _RA＞0.5 Physical Random Access Channel/10ms comprises that according to numbering to be mapped in an orderly manner the following method of employing is mapped to all described Physical Random Access Channels on the 10ms radio frames with all described Physical Random Access Channels: all described Physical Random Access Channels are mapped on each described radio frames on the time domain.

7. method according to claim 2, it is characterized in that, all described Physical Random Access Channels are mapped to the described Physical Random Access Channel that comprises on the time domain being assigned on the 10ms radio frames in an orderly manner according to numbering to be mapped on its 5ms field, wherein

Step a when in the described radio frames 1 downstream-to-upstream transfer point being arranged, is mapped to all described Physical Random Access Channels that are mapped in the described radio frames in first field of described radio frames;

Step b when in the described radio frames 2 downstream-to-upstream transfer points being arranged, is divided into two groups with the described Physical Random Access Channel that is mapped on the described radio frames, is mapped to respectively on first and second field of described radio frames.

8. method according to claim 7 is characterized in that step b specifically comprises:

Press n _RA ^IndAscending or descending, the compartment of terrain is mapped to described Physical Random Access Channel on described first and second field, wherein,

If with described Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $n_{\mathrm{RA}}^{\′\mathrm{ind}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the described Physical Random Access Channel on the described radio frames, the mode that renumbers can for

When leading form is 0 and D _RA≤ 3 o'clock, then order $m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}},$ Otherwise, order $m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the described radio frames, N _RA ^HF(0) and N _RA ^HF(1) represents the quantity of the described Physical Random Access Channel of described first field and second a kind of form that field is held respectively on time domain; Perhaps

If with described Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $n_{\mathrm{RA}}^{\′\mathrm{ind}}=\mathrm{0,1},\·\·\·,Q-1,$ Q is the quantity that is mapped to the described Physical Random Access Channel on the described radio frames, the mode that renumbers can for When leading form is 0 and D _RA=2 o'clock, then order $m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}},$ Otherwise, order $m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the described radio frames, N _RA ^HF(0) and N _RA ^HF(1) represent the quantity of the described Physical Random Access Channel of described first field and second a kind of form that field is held respectively on time domain,

Then with m _RA ^IndFor the described Physical Random Access Channel of even number is mapped on described first field m _RA ^IndFor the described Physical Random Access Channel of odd number is mapped on second field; Perhaps

With m _RA ^IndFor the described Physical Random Access Channel of even number is mapped on described second field m _RA ^IndFor the described Physical Random Access Channel of odd number is mapped on described first field.

9. method according to claim 7 is characterized in that step b specifically comprises:

Press n _RA ^IndAscending or descending, the compartment of terrain is mapped to described Physical Random Access Channel on described first and second field, wherein,

If with described Physical Random Access Channel according to its N _Ind ^RAAscending renumbeing obtains $n_{\mathrm{RA}}^{\′\mathrm{ind}}=\mathrm{0,1},...,Q-1,$ Q is the quantity that is mapped to the described Physical Random Access Channel on the described radio frames, and the mode that renumbers is

Order $m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right),$ N wherein _SPBe the quantity of downstream-to-upstream transfer point in the described radio frames, N _RA ^HF(0) and N _RA ^HF(1) represent the quantity of the described Physical Random Access Channel of described first field and second a kind of form that field is held respectively on time domain,

Then with m _RA ^IndFor the described Physical Random Access Channel of even number is mapped on described first field m _RA ^IndFor the described Physical Random Access Channel of odd number is mapped on second field; Perhaps

With m _RA ^IndFor the described Physical Random Access Channel of even number is mapped on described second field m _RA ^IndFor the described Physical Random Access Channel of odd number is mapped on described first field.

10. method according to claim 2, it is characterized in that, the form of described Physical Random Access Channel is leading format 4, all described Physical Random Access Channels is mapped to the described Physical Random Access Channel that comprises on the time domain being assigned on the 5ms field in an orderly manner according to numbering is mapped on its uplink pilot time slot.

11. method according to claim 2, it is characterized in that, the form of described Physical Random Access Channel is leading form 0～3, all described Physical Random Access Channels is mapped in an orderly manner according to numbering comprise on the time domain and will be fitted on described Physical Random Access Channel on the 5ms field by n _RA ^IndAscending, be mapped to from front to back, circularly in the sub-frame of uplink of described field, up to being assigned to till described Physical Random Access Channel on the described field all shone upon, and on the time domain adjacent two described Physical Random Access Channels uniformly-spaced, wherein,

Be provided with and describedly be spaced apart 0; Perhaps

If the sub-frame of uplink number that described Physical Random Access Channel accounts for is L _RA, the quantity that is mapped to the described Physical Random Access Channel on the described field is P, the sub-frame of uplink number of current described field is N _Sub-frame ^{UL, HF}, described being spaced apart then is set

12. method according to claim 2, it is characterized in that, the form of described Physical Random Access Channel is leading form 0～3, all described Physical Random Access Channels is mapped in an orderly manner according to numbering comprise on the time domain and will be fitted on described Physical Random Access Channel on the 5ms field by n _RA ^IndAscending, be mapped to from back to front, circularly in the sub-frame of uplink of described field, up to being assigned to till described Physical Random Access Channel on the described field all shone upon, and on the time domain adjacent two described Physical Random Access Channels uniformly-spaced, wherein,

Setting is spaced apart 0; Perhaps

If the sub-frame of uplink number that described Physical Random Access Channel accounts for is L _RA, the quantity that is mapped to the described Physical Random Access Channel on the described field is P, the sub-frame of uplink number of current described field is N _Sub-frame ^{UL, HF}, described being spaced apart then is set

13. method according to claim 2 is characterized in that, a described Physical Random Access Channel accounts for L on time domain _RAIndividual described sub-frame of uplink comprises all described Physical Random Access Channels and will be mapped to L according to numbering to be mapped in an orderly manner on the frequency domain _RADescribed Physical Random Access Channel on the individual described sub-frame of uplink shines upon on frequency domain one of by the following method:

Press n _RA ^IndAscendingly or descending successively described Physical Random Access Channel is shone upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, a described Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two described Physical Random Access Channels;

Press n _RA ^IndAscendingly or descending successively described Physical Random Access Channel is shone upon to both sides from the centre in the available frequencies resource, a described Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two described Physical Random Access Channels;

Press n _RA ^IndAscending or descending described Physical Random Access Channel is shone upon to the centre from both sides in the available frequencies resource, a described Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels;

With the r of version number _RAIdentical described Physical Random Access Channel shines upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource, a described Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; For each r of version number _RAAll adopt identical mapping process;

With the r of version number _RAIdentical described Physical Random Access Channel shines upon to the centre from both sides in the available frequencies resource, and a described Physical Random Access Channel accounts for 6 Resource Block, and on frequency domain the adjacent shared frequency band zero lap of two Physical Random Access Channels; For each r of version number _RAAll adopt identical mapping process.

14. method according to claim 13 is characterized in that, the Physical Random Access Channel that time-domain position is identical has W, according to n _RA ^IndAscending or descending renumbeing is, w=0,1,2 ..., W-1 presses n _RA ^IndIt is ascending or descending that mapping specifically comprises from both sides to the centre in the available frequencies resource with described Physical Random Access Channel:

To be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to low frequency from high frequency in the available frequencies resource w, shine upon to high frequency from low frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w, or w to be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to high frequency from low frequency in the available frequencies resource, shine upon to low frequency from high frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w; Or

The first half Physical Random Access Channel is ascending or descending by w to be shone upon to low frequency from high frequency in the available frequencies resource, afterwards half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, or the first half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, half Physical Random Access Channel is ascending or descending by w shines upon to low frequency from high frequency in the available frequencies resource in the back, wherein with

Or

Or

Or Physical Random Access Channel be the first half, with remaining Physical Random Access Channel serve as the back half.

15. method according to claim 13, it is characterized in that, version number is that r and the identical Physical Random Access Channel of time-domain position have W, numbering is respectively w=0,1,2, W-1, these time-domain positions are identical, and the also identical W of a version number described Physical Random Access Channel mapping specifically comprises from both sides to the centre in the available frequencies resource:

To be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to low frequency from high frequency in the available frequencies resource w, shine upon to high frequency from low frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w, or w to be that the Physical Random Access Channel of even number is ascending or descending by w shine upon to high frequency from low frequency in the available frequencies resource, shine upon to low frequency from high frequency in the available frequencies resource for the Physical Random Access Channel of odd number is ascending or descending by w; Or

The first half Physical Random Access Channel is ascending or descending by w to be shone upon to low frequency from high frequency in the available frequencies resource, afterwards half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, or the first half Physical Random Access Channel is ascending or descending by w shines upon to high frequency from low frequency in the available frequencies resource, half Physical Random Access Channel is ascending or descending by w shines upon to low frequency from high frequency in the available frequencies resource in the back, wherein with

Or Or Or

Physical Random Access Channel be the first half, with remaining Physical Random Access Channel serve as the back half.

16. method according to claim 2, it is characterized in that, with all described Physical Random Access Channels according to the numbering be mapped in an orderly manner time domain and or frequency domain on comprise that the described Physical Random Access Channel that will be mapped on a sub-frame of uplink or the uplink pilot time slot shines upon by the following method on frequency domain:

With the r of version number _RAAll described Physical Random Access Channels identical, that be mapped on sub-frame of uplink or the uplink pilot time slot shine upon from the low frequency to the high frequency or from the high frequency to the low frequency in the available frequencies resource,

Wherein, with above-mentioned steps described Physical Random Access Channel is mapped to sub-frame of uplink or uplink pilot time slot on adjacent two fields, adopt different mapping orders respectively, and a described Physical Random Access Channel accounts for 6 Resource Block, and the adjacent shared frequency band zero lap of two Physical Random Access Channels on frequency domain is for each r of version number _RAAll adopt identical mapping process.

17. method according to claim 16 is characterized in that, with the r of version number _RAIdentical, be mapped to all described Physical Random Access Channels on a sub-frame of uplink or the uplink pilot time slot and in the available frequencies resource, from the low frequency to the high frequency or from the high frequency to the low frequency, shine upon specifically and comprise:

In the even number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; In the odd number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; Or

In the odd number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; In the even number radio frames, the sub-frame of uplink of first field or uplink pilot time slot shine upon to low frequency from the high frequency of available band; The sub-frame of uplink of second field or uplink pilot time slot shine upon to high frequency from the low frequency of available band; Or

Quantity according to uplink pilot time slot in the radio frames is shone upon.

18. method according to claim 17 is characterized in that, shines upon specifically according to the quantity of uplink pilot time slot in the radio frames to comprise:

For a radio frames situation of two uplink pilot time slots is arranged,

Shine upon to high frequency from low frequency in the inherent available band of sub-frame of uplink in first field or uplink pilot time slot, shine upon to low frequency from high frequency in the inherent available band of sub-frame of uplink in second field or uplink pilot time slot, each radio frames adopts identical method; Or

Shine upon to low frequency from high frequency in the inherent available band of sub-frame of uplink in first field or uplink pilot time slot, shine upon to high frequency from low frequency in the inherent available band of sub-frame of uplink in second field or uplink pilot time slot, each radio frames adopts identical method;

The situation that a uplink pilot time slot is arranged for a radio frames

In the sub-frame of uplink or uplink pilot time slot of even number radio frames, in available band, shine upon to high frequency from low frequency, in the sub-frame of uplink or uplink pilot time slot of odd number radio frames, in available band, shine upon to low frequency from high frequency; Or

In the sub-frame of uplink or uplink pilot time slot of odd number radio frames, in available band, shine upon to high frequency from low frequency, in the sub-frame of uplink or uplink pilot time slot of even number radio frames, in available band, shine upon to low frequency from high frequency; Or

In the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to high frequency from low frequency; Or

In the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to high frequency from low frequency; Or

In the sub-frame of uplink or uplink pilot time slot of all radio frames, in available band, shine upon to the centre from both sides.

19. method according to claim 2 is characterized in that, the density of obtaining Physical Random Access Channel specifically comprises:

Directly notify by the control signaling of described Physical Random Access Channel by the base station.

20. method according to claim 2 is characterized in that, the version number that obtains Physical Random Access Channel specifically comprises following at least a method:

By the described Physical Random Access Channel preparation kind of sending by the base station, determine according to the version number of leading form and described density combinations in the described Physical Random Access Channel preparation set;

The described Physical Random Access Channel quantity N that described version number is supported at frequency domain according to system _RA ^BW, 10ms internal conversion point quantity N _SPAnd the density D of described Physical Random Access Channel, by calculating

Obtain;

Described version number is fixed as 3.

21., it is characterized in that according to each described method among the claim 1-18, also be included in when using mapping algorithm, obtain the described r of version number _RA, it specifically comprises: directly obtain the described r of version number by the described Physical Random Access Channel preparation kind of being sent by the base station _RA, r _RA∈ [0, R-1].

22., it is characterized in that the time domain mapping formula that all described Physical Random Access Channels are mapped on the 10ms radio frames is according to claim 4 or 6 described methods:

$t_{\mathrm{RA}}^0=\mathrm{\α}(\left(n_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}2\right)+1)$

Wherein

t _RA ⁰The expression Physical Random Access Channel is in which radio frames, and 0 represents each radio frames, and 1 represents the even number radio frames, and 2 represent the odd number radio frames, α=(2D _RA) mod2,

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with n _RA ^IndAnd the above-mentioned expression formula of α substitution, then t _RA ⁰Also can write and do

In addition, because D _RA〉=1 o'clock, α=0; D _RA=0.5 o'clock, $n_{\mathrm{RA}}^{\mathrm{ind}}=r_{\mathrm{RA}},$ So also can be write as $t_{\mathrm{RA}}^0=\left(\left({2R}_{\mathrm{RA}}\right)\mathrm{mod}2\right)(1+r_{\mathrm{RA}}\mathrm{mod}2).$

23., it is characterized in that the time domain mapping formula that the described Physical Random Access Channel that is assigned on the 10ms radio frames is mapped on its 5ms field is according to claim 7 or 8 described methods:

$t_{\mathrm{RA}}^1=m_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}{N}_{\mathrm{SP}}$

Work as D _RA≤ 3 and leading form be 0 o'clock,

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}$

Otherwise

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

Wherein

t _RA ¹The expression Physical Random Access Channel is at which field, and 0 represents first field, and 1 represents second field, the mod2 of α=(2D),

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with α, n _RA ^Ind, n _RA' ^Ind, N _RA ^HF(i) the above-mentioned expression formula of substitution, then m _RA ^IndAlso be expressed as

Work as D _RA≤ 3 and leading form be 0 o'clock,

Otherwise

24., it is characterized in that the time domain mapping formula that the described Physical Random Access Channel that is assigned on the 10ms radio frames is mapped on its 5ms field is according to claim 7 or 8 described methods:

$t_{\mathrm{RA}}^1=m_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}{N}_{\mathrm{SP}}$

Work as D _RA=2 and leading form be 0 o'clock,

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}$

Otherwise

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

Wherein

t _RA ¹The expression Physical Random Access Channel is at which field, and 0 represents first field, and 1 represents second field, the mod2 of α=(2D),

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with α, n _RA ^Ind, n _RA' ^Ind, N _RA ^HF(i) the above-mentioned expression formula of substitution, then m _RA ^IndAlso can be expressed as

Work as D _RA=2 and leading form be 0 o'clock,

Otherwise

25., it is characterized in that the time domain mapping formula that the described Physical Random Access Channel that is assigned on the 10ms radio frames is mapped on its 5ms field is according to claim 7 or 9 described methods:

$t_{\mathrm{RA}}^1=m_{\mathrm{RA}}^{\mathrm{ind}}\mathrm{mod}{N}_{\mathrm{SP}}$

$m_{\mathrm{RA}}^{\mathrm{ind}}=n_{\mathrm{RA}}^{\′\mathrm{ind}}\mathrm{mod}\underset{i=0}{\overset{N_{\mathrm{SP}}-1}{\mathrm{\Σ}}}{N}_{\mathrm{RA}}^{\mathrm{HF}}\left(i\right)$

Wherein

t _RA ¹The expression Physical Random Access Channel is at which field, and 0 represents first field, and 1 represents second field, the mod2 of α=(2D),

And

Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station;

If with α, n _RA ^Ind, n _RA' ^Ind, N _RA ^HF(i) the above-mentioned expression formula of substitution, then m _RA ^IndAlso can be expressed as

26., it is characterized in that the time domain mapping formula that the described Physical Random Access Channel that is assigned on the 5ms field is mapped on its uplink pilot time slot is according to claim 10 or 12 described methods:

Wherein

r _RA ²Represent leading form 0～be mapped on the uplink pilot time slot when Physical Random Access Channel is mapped to which sub-frame of uplink or leading format 4 in field at 3 o'clock; The mod2 of α=(2D),

And Preceding conductivity type and the r of PRACH _RA, D _RABe notified to mobile phone by the base station; In addition,, has only a uplink pilot time slot in the field at most, so this moment for leading format 4 $t_{\mathrm{RA}}^2=0.$

27., it is characterized in that the frequency domain mapping formula that shines upon is according to claim 13 or 15 described methods on frequency domain:

Wherein

k _RABe first available frequency domain resource piece of certain Physical Random Access Channel, and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe ascending resource piece sum;

α＝(2D _RA)mod2；

f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index of Physical Random Access Channel, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all Physical Random Access Channels, k ' _RAFirst can be used for the position of the Resource Block of Physical Random Access Channel for low frequency, $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number be r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all Physical Random Access Channels;

N _Sub-frame ^{UL, HF}(i) be the quantity of the uplink pilot time slot of the sub-frame of uplink of leading form 0～3 in the field or leading format 4, i=0 is first field, and i=1 is the 2nd field; L _RAThe sub-frame of uplink number that accounts for for the PRACH channel of leading form 0～3 form is for leading format 4, L _RA=1;

N _SPQuantity for the downstream-to-upstream transfer point;

N _RA ^BWUnder current system bandwidth, the quantity of the open ended Physical Random Access Channel of frequency domain.

28., it is characterized in that the frequency domain mapping formula that shines upon is according to each described method in the claim 13,15,16,17,18 on frequency domain:

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}(\left(\mathrm{SFN}\mathrm{mod}2\right)\·(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-{6f}_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}(\left(\mathrm{SFN}\mathrm{mod}2\right)+t_{\mathrm{RA}}^1)\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-{6f}_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-{6f}_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for described Physical Random Access Channel is leading form 0～4

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-{6f}_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Perhaps

Form for described Physical Random Access Channel is leading form 0～4

Work as N _SP=2 o'clock,

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-{6f}_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Work as N _SP=1 o'clock,

Perhaps

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

Work as N _SP=2 o'clock,

$k_{\mathrm{RA}}=\left\{\begin{array}{cc}{k}_{\mathrm{RA}}^{\′}+6f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{if}{t}_{\mathrm{RA}}^1\mathrm{mod}2=0\\ N_{\mathrm{RB}}^{\mathrm{UL}}-k_{\mathrm{RA}}^{\′}-6-{6f}_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2),& \mathrm{otherwise}\end{array}\right.$

Work as N _SP=1 o'clock,

Wherein

k _RABe first available frequency domain resource piece of certain Physical Random Access Channel, and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe ascending resource piece sum;

α＝(2D _RA)mod2；

f _RA ^r(t _RA ⁰, t _RA ¹, T _RA ²) be the frequency domain map index of Physical Random Access Channel, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all Physical Random Access Channels, k ' _RAFirst can be used for the position of the Resource Block of Physical Random Access Channel for low frequency, $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number be r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all Physical Random Access Channels;

N _Sub-frame ^{UL, HF}(i) be the quantity of interior sub-frame of uplink (leading form 0～3) of field or uplink pilot time slot (leading format 4), i=0 is first field, and i=1 is the 2nd field; L _RAThe sub-frame of uplink number that accounts for for the PRACH channel of certain leading form (leading form 0～3) is for leading format 4, L _RA=1;

N _SPQuantity for the downstream-to-upstream transfer point;

N _RA ^BWUnder current system bandwidth, the quantity of the open ended Physical Random Access Channel of frequency domain;

t _RA ¹Equal 0 or 1, so $t_{\mathrm{RA}}^1\mathrm{mod}2=0$ Be equivalent to $t_{\mathrm{RA}}^1=0;$ $t_{\mathrm{RA}}^1\mathrm{mod}2=1$ Be equivalent to $t_{\mathrm{RA}}^1=1;$

SFN is System Frame Number or is called radio frame number.

29., it is characterized in that the frequency domain mapping formula that shines upon is according to each described method in the claim 13,14,15 on frequency domain:

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

Wherein

Perhaps

Form for described Physical Random Access Channel is leading form 0～3

Form for described Physical Random Access Channel is leading format 4

Wherein

Wherein

k _RABe first available frequency domain resource piece of certain Physical Random Access Channel, and $k_{\mathrm{RA}}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RB ^ULBe ascending resource piece sum;

α＝(2D _RA)mod2；

f _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) be the frequency domain map index of Physical Random Access Channel, and have $f_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)=\mathrm{0,1,2},...,N_{\mathrm{RA}}^r(t_{\mathrm{RA}}^0,t_{\mathrm{RA}}^1,t_{\mathrm{RA}}^2)-1;$ Its implication is: version number is r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) numbering of determined all Physical Random Access Channels, k ' _RAFirst can be used for the position of the Resource Block of Physical Random Access Channel for low frequency, $k_{\mathrm{RA}}^{\′}\∈[0,N_{\mathrm{RB}}^{\mathrm{UL}}-6],$ N _RA ^r(t _RA ⁰, t _RA ¹, t _RA ²) for version number be r _RA, and time-domain position is by (t _RA ⁰, t _RA ¹, t _RA ²) quantity of determined all Physical Random Access Channels;

N _Sub-frame ^{UL, HF}(i) be the quantity of the uplink pilot time slot of the sub-frame of uplink of leading form 0～3 in the field or leading format 4, i=0 is first field, and i=1 is the 2nd field; L _RAThe sub-frame of uplink number that accounts for for the PRACH channel of leading form 0～3 form is for leading format 4, L _RA=1.

N _SPQuantity for the downstream-to-upstream transfer point;

N _RA ^BWUnder current system bandwidth, the quantity of the open ended Physical Random Access Channel of frequency domain.