CN101394263B - Uplink channel measurement reference signal and mapping method for bandwidth range frequency domain position - Google Patents

Abstract

The invention discloses a mapping method for uplink channel Sounding Reference Signal and the bandwidth range frequency-domain position. When the frequency-domain position of the largest SRS bandwidth is determined, the frequency-domain position of the largest SRS bandwidth and the physical random accessing channel (PRACH) of the uplink pilot time slot (UpPTS), that is, the frequency-domain position of the PRACH channel are staggered; the distance between the frequency-domain ending position of the largest SRS bandwidth and the upper boundary of the uplink system bandwidth is larger than or equal to an allocated first deviation value, and/or the distance between the frequency-domain initial position of the largest SRS bandwidth and the lower boundary of the uplink system bandwidth is larger than or equal to an allocated second deviation value. The invention has the advantages that interference to the determined frequency-domain position of an SRS signal in UpPTS does not interfere with the PRACH channel, and can avoid out-band leakage between systems.

Description

The mapping method of uplink channel measurement reference signal and bandwidth range frequency domain position thereof

Technical field

The present invention relates to time division duplex (TDD) system, in particular to a kind of sending method of TDD system uplink channel measurement reference signal.

Background technology

The frame structure (being called second type of frame structure again, i.e. frame structure type2) of LTE system TDD (Time Division Duplex, time division duplex) pattern is as shown in Figure 1.In this frame structure, (307200Ts, radio frames 1ms=30720Ts) is divided into two fields to a 10ms, the long 5ms of each field (153600Ts).The subframe that it is 1ms that each field comprises 5 length.The effect of each subframe is as shown in table 1, and wherein the D representative is used for the descending sub frame of transmission of downlink signal.The U representative is used to transmit the sub-frame of uplink of upward signal.In addition, upstream or downstream subframe is divided into the time slot of 2 0.5ms again.S represents special subframe, comprises three special time slots, i.e. DwPTS (Downlink Pilot Time Slot, descending pilot frequency time slot), GP (Guard Period, protection at interval) and UpPTS (Uplink Pilot TimeSlot, uplink pilot time slot).In real system, the uplink and downlink configuration index can be notified to mobile phone through broadcast.

The configuration of table 1 uplink and downlink

Resource allocation in the LTE system is with RB (Resource Block, Resource Block, or be called Physical Resource Block; Be Physical Resource Block, abbreviate PRB as) be unit, a RB accounts for 12 number of sub-carrier on frequency domain; On time domain, account for a time slot; I.e. 7 (common CP, Normal cyclic prefix) or 6 (expansion CP, Extended cyclic prefix) SC-FDMA symbols.RB adds up to

(being that system bandwidth equates with pairing bandwidth of individual RB) if definition up-link bandwidth is corresponding on frequency domain; Then the index of RB is 0; 1; ...;

-1; The index of subcarrier is 0; 1; ...,

is the size of RB on the frequency domain, is expressed as sub-carrier number.The structure of RB is as shown in Figure 2, and the least unit of resource is Resource Unit (RE, i.e. Resource Element).

At frequency domain, a Physical Random Access Channel is that the PRACH channel accounts for 6 pairing bandwidth of RB, i.e. 72 RE (Resource Element, or be called sub-carrier, subcarrier), and the bandwidth of each RE is 15kHz.The PRACH channel that time-domain position is identical is distinguished through frequency domain.

The uplink pilot time slot of TDD system can be used for sending uplink channel measurement reference signal, and (Sounding Referece Signal is 4 PRACH channel with leading form SRS).

The bandwidth of SRS signal adopts tree to be configured, and is as shown in Figure 3.The corresponding tree of each SRS band width configuration (being SRS bandwidth configuration), top SRS bandwidth (SRS-Bandwidth) is corresponding the maximum bandwidth of this SRS band width configuration (or being called the SRS bandwidth range).Table 3～table 6 has provided the SRS band width configuration in the different upstream bandwidth scopes.m _{SRS, b}Expression be in the tree index be the SRS bandwidth of layer of b at the corresponding RB number of frequency domain, in other words the SRS bandwidth be the RB bandwidth what doubly; N _bIndex is that the node of the layer of b-1 is the number of the branch node that comprised in the layer of b at index in the expression tree, b=0 corresponding the ground floor of tree also promptly top, m _{SRS, 0}Maximum SRS bandwidth under just should disposing.

With SRS band width configuration in the table 31 is example, and b=0 is a ground floor, and the pairing SRS bandwidth of this one deck is 32 pairing bandwidth of RB, is the maximum SRS bandwidth of this SRS band width configuration; B=1 is the second layer, and this one deck SRS bandwidth is the corresponding bandwidth of 16 RB, and a SRS bandwidth of ground floor splits into the SRS bandwidth of 2 second layers; B=2 is the 3rd layer, and this one deck SRS bandwidth is the corresponding bandwidth of 8 RB, and a SRS bandwidth of the second layer splits into 2 the 3rd layer SRS bandwidth; B=3 is the 4th layer, and the SRS bandwidth of this one deck is the corresponding bandwidth of 4 RB, and a SRS bandwidth of the 3rd layer splits into 2 the 4th layer SRS bandwidth.

In addition, in same SRS frequency band, sending to the subcarrier that the SRS signal at a certain terminal takies is to place at interval, and as shown in Figure 4, this pectinate texture allows more terminal in same SRS bandwidth, to send the SRS signal.

Table 2 $(6\≤N_{\mathrm{RB}}^{\mathrm{UL}}\≤40)$

Table 3 $(40<N_{\mathrm{RB}}^{\mathrm{UL}}\&le;60)$

Table 4 $(60<N_{\mathrm{RB}}^{\mathrm{UL}}\&le;80)$

Table 5 $(80<N_{\mathrm{RB}}^{\mathrm{UL}}\&le;110)$

When sending the SRS signal, the SRS bandwidth in each layer of tree is all within the frequency band range at maximum SRS bandwidth place, and the relative position of SRS bandwidth in maximum SRS bandwidth can change in each layer.Therefore, need avoid SRS signal in the UpPTS to produce and disturb, make more bandwidth obtain the chance of channel measurement in addition as much as possible, just need reasonably dispose the frequency domain position of the interior SRS signal maximum bandwidth of UpPTS with the PRACH channel.In addition, for the band external leakage problem between resolution system, the initial position of maximum SRS bandwidth also should guarantee enough flexibilities, makes that the SRS bandwidth can avoid being positioned at the edge of system bandwidth when having the band external leakage.Also there is not corresponding solution at present.

Summary of the invention

The technical problem that the present invention will solve provides a kind of mapping method of uplink channel measurement reference signal frequency domain position; Can not produce interference through SRS signal frequency-domain position in the definite UpPTS of this method, and can avoid the band external leakage between system with the PRACH channel.

In order to solve the problems of the technologies described above; The invention provides a kind of mapping method of uplink channel measurement reference signal frequency domain position; Be applied to adopt in the long evolving system of TDD mode; When the transmission measurement reference signal is the SRS signal in uplink pilot time slot UpPTS; Frequency domain position according to being the maximum SRS bandwidth of the selected SRS band width configuration of this SRS signal is confirmed this SRS signal frequency-domain position with this SRS signal bandwidth with respect to the offset of this maximum SRS bandwidth, it is characterized in that:

When confirming the frequency domain position of this maximum SRS bandwidth, the frequency domain position that the frequency domain position and the Physical Random Access Channel in this UpPTS of this maximum SRS bandwidth is the PRACH channel staggers;

And; The distance of the frequency domain end position of this maximum SRS bandwidth and the coboundary of up-link bandwidth is more than or equal to one first deviate of configuration; And/or the distance of the frequency domain original position of this maximum SRS bandwidth and the lower boundary of up-link bandwidth is more than or equal to one second deviate of configuration.

Further, the frequency domain original position of said maximum SRS bandwidth, the promptly maximum SRS bandwidth index that is mapped to first subcarrier on the frequency domain is confirmed according to following formula:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2\&NotEqual;0\end{array}\right.$

Wherein:

k _TCBe the sub-carrier offset amount of the pectinate texture of said SRS signal configures, k _TC∈ 0,1}; Size for RB on the frequency domain is expressed as sub-carrier number;

For the up-link bandwidth at the pairing RB number of frequency domain; N _SPIn the radio frames of said SRS signal place, the quantity of downstream-to-upstream transfer point; n _fSystem Frame Number for said SRS signal place radio frames; ${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=0$ First field of expression radio frames, ${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=1$ Second field of expression radio frames;

Be the corresponding RB number of maximum SRS bandwidth; n _{Offset, 1}Be said first deviate, $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, n _{Offset, 1}Be the Resource Block index and the Resource Block index at maximum SRS bandwidth frequency domain end position place Deviation; n _{Offset, 2}Be said second deviate, $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, n _{Offset, 2}Be the Resource Block index at maximum SRS bandwidth frequency domain original position place and the deviation of Resource Block index 0.

Further; Said maximum SRS bandwidth is confirmed by following mode: a base station selected SRS band width configuration and with signaling method notice terminal, said maximum SRS bandwidth

is confirmed as with the SRS bandwidth of ground floor in the tree of this SRS band width configuration correspondence in base station and terminal

Further, said maximum SRS bandwidth equals the SRS bandwidth for ground floor in the corresponding tree of the selected SRS band width configuration of said SRS signal, and the SRS band width configuration is selected according to following manner in base station and terminal:

In corresponding the SRS bandwidth configuration table or all SRS bandwidth configuration table, from maximum

All SRS band width configuration in, select a maximum SRS band width configuration of maximum SRS bandwidth, as selected SRS band width configuration, wherein, N _RAQuantity for PRACH channel in the UpPTS of SRS signal place.

Further; Said first deviate is according to the requirement of the protection bandwidth at boundary place configuration on top between said up-link bandwidth and the other system bandwidth, and said second deviate disposes according to the requirement in the protection bandwidth at lower boundary place between said up-link bandwidth and the other system bandwidth.

Further, this SRS signal is sent according to the said SRS signal frequency-domain position of confirming in the terminal in said uplink pilot time slot UpPTS, and the said SRS signal frequency-domain position that the base station is then confirmed in said uplink pilot time slot UpPTS receives this SRS signal.

SRS signal frequency-domain position can make the UpPTS signal not produce interference with the PRACH channel in the UpPTS that the present invention obtains.In addition, this method has enough flexibilities, the band external leakage problem between can resolution system.Further, can make more bandwidth obtain the chance of channel measurement.

The technical problem that the present invention will solve provides a kind of mapping method of uplink channel measurement reference signal bandwidth scope frequency domain position; Frequency domain position through maximum SRS bandwidth in the definite UpPTS of this method can not produce interference with the PRACH channel, and can avoid the band external leakage between system.

In order to solve the problems of the technologies described above; The invention provides a kind of mapping method of frequency domain position of uplink channel measurement reference signal bandwidth scope; Be applied to adopt in the long evolving system of TDD mode; When being used for that the transmission measurement reference signal is the SRS signal in uplink pilot time slot UpPTS; Confirm the index

of first subcarrier of this SRS signal bandwidth range mappings to the frequency domain according to following formula, this SRS signal bandwidth scope is the maximum SRS bandwidth of the selected SRS band width configuration of this SRS signal:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2\&NotEqual;0\end{array}\right.$

Wherein:

k _TCBe the sub-carrier offset amount of the pectinate texture of said SRS signal configures, k _TC∈ 0,1};

Size for RB on the frequency domain is expressed as sub-carrier number;

For the up-link bandwidth at the pairing RB number of frequency domain; N _SPIn the radio frames of said SRS signal place, the quantity of downstream-to-upstream transfer point; n _fSystem Frame Number for said SRS signal place radio frames; ${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=0$ First field of expression radio frames, ${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=1$ Second field of expression radio frames;

Be the corresponding RB number of maximum SRS bandwidth; n _{Offset, 1}First deviate for configuration; n _{Offset, 2}Second deviate for configuration.

Further; Said maximum SRS bandwidth is confirmed by following mode: a base station selected SRS band width configuration and with signaling method notice terminal, said maximum SRS bandwidth

is confirmed as with the SRS bandwidth of ground floor in the tree of this SRS band width configuration correspondence in base station and terminal

Further, the maximum SRS bandwidth of said base station selected SRS band width configuration Must satisfy $m_{\mathrm{SRS},0}^{\mathrm{Max}}+6N_{\mathrm{RA}}+(n_{\mathrm{Offset},2}+n_{\mathrm{Offset},1})\&le;N_{\mathrm{RB}}^{\mathrm{UL}},$ N wherein _RAQuantity for PRACH channel in the UpPTS of SRS signal place.

Further, said maximum SRS bandwidth equals the SRS bandwidth for ground floor in the corresponding tree of the selected SRS band width configuration of said SRS signal, and the SRS band width configuration is selected according to following manner in base station and terminal:

In corresponding the SRS bandwidth configuration table or all SRS bandwidth configuration table, from maximum

All SRS band width configuration in, select a maximum SRS band width configuration of maximum SRS bandwidth, as selected SRS band width configuration, wherein, N _RAQuantity for PRACH channel in the UpPTS of SRS signal place.

Further, exist $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, said first deviate is the Resource Block index and the Resource Block index at maximum SRS bandwidth frequency domain end position place

Deviation;

$(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, said second deviate is the Resource Block index at maximum SRS bandwidth frequency domain original position place and the deviation of Resource Block index 0.

Further; Said first deviate is according to the requirement of the protection bandwidth at boundary place configuration on top between said up-link bandwidth and the other system bandwidth, and said second deviate disposes according to the requirement in the protection bandwidth at lower boundary place between said up-link bandwidth and the other system bandwidth.

The frequency domain position of maximum SRS bandwidth can make the UpPTS signal not produce interference with the PRACH channel in the UpPTS that the present invention obtains.In addition, this method has enough flexibilities, the band external leakage problem between can resolution system.Further, can make more bandwidth obtain the chance of channel measurement.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the sketch map of the frame structure of LTE system TDD mode;

Fig. 2 is the structural representation of Resource Block;

Fig. 3 is the sketch map of the tree of SRS bandwidth;

Fig. 4 is the sketch map of the pectinate texture of SRS signal;

Fig. 5 A and Fig. 5 B are the position views of the embodiment of the invention one maximum SRS bandwidth;

Fig. 6 A and Fig. 6 B are the position views of the embodiment of the invention two maximum SRS bandwidth;

Fig. 7 A and Fig. 7 B are the position views of the embodiment of the invention three maximum SRS bandwidth;

Fig. 8 A and Fig. 8 B are the position views of the embodiment of the invention four maximum SRS bandwidth;

Fig. 9 A and Fig. 9 B are the position views of the embodiment of the invention five maximum SRS bandwidth;

In above-mentioned Fig. 4 and subsequent the accompanying drawing,

Expression k _TC=1 o'clock, the zone of the subcarrier that use in the SRS bandwidth at the terminal,

Expression k _TC=0 o'clock, the zone of the subcarrier that use in the SRS bandwidth at the terminal.

Embodiment

To combine accompanying drawing and embodiment of the present invention to specify the present invention below.

Present embodiment provides the mapping method of up channel SRS signal frequency domain position in a kind of LET FDD system; In uplink pilot time slot UpPTS during the transmitting SRS signal, confirm this SRS signal frequency-domain position with this SRS signal bandwidth with respect to the offset of this maximum SRS bandwidth according to frequency domain position for the maximum SRS bandwidth (i.e. the SRS bandwidth range at this SRS signal bandwidth place) of the selected SRS band width configuration of this SRS signal bandwidth.The present invention pays close attention to is the confirming of frequency domain position of maximum SRS bandwidth., can confirm with respect to the skew of the position of this maximum SRS bandwidth as for the SRS signal bandwidth, specifically can not launch argumentation in the present invention with reference to the algorithm in the respective standard based on information such as the number of plies of this resource in tree of configuration and call numbers.

When confirming the frequency domain position of this maximum SRS bandwidth, need the frequency domain position of the PRACH channel in this UpPTS is staggered; And; The frequency domain end position of this maximum SRS bandwidth and the coboundary of up-link bandwidth are one first deviate of the distance of the high side, boundary of frequency more than or equal to configuration; And/or the frequency domain original position of this maximum SRS bandwidth and the lower boundary of up-link bandwidth are one second deviate of the distance of the low side, boundary of frequency more than or equal to configuration.

Particularly, present embodiment is represented with the index that maximum SRS bandwidth is mapped to first subcarrier on the frequency domain according to the frequency domain original position of the maximum SRS bandwidth of computes:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{otherwise}\end{array}\right.$

Otherwise in the formula promptly refers to $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time situation.

Meaning of parameters wherein is following:

k _TCBe the sub-carrier offset amount of the pectinate texture of SRS signal configures, k _TC∈ 0,1};

Size for RB on the frequency domain is expressed as sub-carrier number, in the present embodiment $N_{\mathrm{SC}}^{\mathrm{RB}}=12;$

For the up-link bandwidth at the pairing RB number of frequency domain, like up system bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=50$ The time, expression up-link bandwidth is the bandwidth of 50 RB on frequency domain;

N _SPIn the radio frames of SRS signal place, the quantity of downstream-to-upstream transfer point;

n _fBe the System Frame Number (SFN, System frame number) of radio frames, i.e. the System Frame Number of SRS signal place radio frames;

${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=0$ , 1 representes first and second field of radio frames respectively, when promptly the SRS signal is in first field of radio frames, ${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=0$ , when the SRS signal is in second field of radio frames, ${\mathrm{<figure-callout\; id="1"\; label="t\; RA"\; filenames="H2008101735067E00021.png,H2008101735067E00032.png"\; state="\{\{state\}\}">t</figure-callout>}}_{\mathrm{RA}}^{}=1;$

is the corresponding RB number of maximum SRS bandwidth;

n _{Offset, 1}Be first deviate, $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time be the Resource Block index and the Resource Block index at maximum SRS bandwidth end position place

Deviation, also be that the index of the Resource Block at maximum SRS bandwidth frequency domain end position place does

n _{Offset, 2}Be second deviate, $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time be the Resource Block index and the deviation of Resource Block index 0 at maximum SRS bandwidth frequency domain original position place, also be the index of the Resource Block that belongs to of maximum SRS bandwidth frequency domain original position.

Resource Block bias internal k at maximum SRS bandwidth original position place _TCNumber of sub-carrier can obtain the pairing sub-carrier indices of maximum SRS bandwidth original position.

In the present embodiment; Maximum SRS bandwidth in the above-mentioned parameter

equals the SRS bandwidth of ground floor in the corresponding tree of a kind of SRS band width configuration; This SRS band width configuration can be confirmed by following dual mode, but the present invention is not limited to this dual mode:

First kind; A base station selected SRS band width configuration and with signaling method notice terminal like call number notice terminal with this SRS band width configuration, above-mentioned maximum SRS bandwidth is confirmed as with the SRS bandwidth of ground floor in the tree of this SRS band width configuration correspondence in base station and terminal.

The maximum SRS bandwidth of base station selected SRS band width configuration

Must satisfy $m_{\mathrm{SRS},0}^{\mathrm{Max}}+6N_{\mathrm{RA}}+(n_{\mathrm{Offset},2}+n_{\mathrm{Offset},1})\&le;N_{\mathrm{RB}}^{\mathrm{UL}}$ , N wherein _RAQuantity for PRACH channel in the UpPTS of SRS signal place.

Second kind, the SRS band width configuration is confirmed according to following manner in base station and terminal:

In the corresponding allocation list, from maximum SRS bandwidth (i.e. the SRS bandwidth of corresponding tree ground floor) $\&le;N_{\mathrm{RB}}^{\mathrm{UL}}-6N_{\mathrm{RA}}-(n_{\mathrm{Offset},2}+n_{\mathrm{Offset},1})$ All SRS band width configuration in, select a maximum SRS band width configuration of maximum SRS bandwidth.The maximum SRS bandwidth of confirming according to this mode can make bandwidth as much as possible obtain the chance of channel measurement.

Consider the band external leakage problem between the system that possibly exist, in order to adapt to various applied environment, it is n that present embodiment has disposed two deviates for this reason especially _{Offset, 1}And n _{Offset, 2}, when possibly there is the band external leakage in the lower boundary of up-link bandwidth, can be with deviate n _{Offset, 2}Be made as and be not equal to 0 integer to avoid this problem, as not having the band external leakage at lower boundary, can be with deviate n _{Offset, 2}Be made as 0; Equally, when possibly there is the band external leakage in the coboundary of up-link bandwidth, can be with deviate n _{Offset, 1}Be made as and be not equal to 0 integer avoiding this problem, do not have the band external leakage like boundary on top, can be with deviate n _{Offset, 1}Be made as 0.After these two deviates configured, the signaling terminal can be passed through in the base station.

Also promptly, the first deviate n _{Offset, 1}According to the requirement configuration of the protection bandwidth at place, boundary on top between said up-link bandwidth and the other system bandwidth, the second deviate n _{Offset, 2}According between said up-link bandwidth and the other system bandwidth in the requirement configuration of the protection bandwidth at lower boundary place.Through above-mentioned two deviate n are set _{Offset, 1}And n _{Offset, 2}Can be in the time can not reaching the width requirement of protection bandwidth between system at the interval of frequency domain between the coboundary of this up-link bandwidth and/or lower boundary and the other system bandwidth; The part Resource Block that the number of boundary is equaled this deviate is idle; Make the protection bandwidth between system reach requirement, thereby avoid being with external leakage.The band external leakage problem of this mode between can resolution system, and relatively flexibly.In addition, when confirming the frequency domain position of PRACH channel, equally also to consider above two deviates.

Can find out from above-mentioned formula in addition, $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2$ Equal at 0 o'clock, the coboundary that the frequency domain end position of maximum SRS bandwidth is positioned at the up-link bandwidth is the high side, boundary of frequency or the n that squints downwards again _{Offset, 1}Individual RB, by standard code, this moment, the PRACH channel was that lower boundary from the up-link bandwidth begins upwards to distribute; $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2$ Be not equal at 0 o'clock, the frequency domain original position of maximum SRS bandwidth is positioned at the lower boundary of up-link bandwidth or the n that upwards squints again _{Offset, 2}Individual RB, by standard code, this moment, the PRACH channel was that coboundary from the up-link bandwidth begins downwards to distribute, and therefore can avoid both to produce conflict.

The terminal is in uplink pilot time slot UpPTS, and this SRS signal is sent in the SRS signal frequency-domain position of confirming according to the method described above, and the SRS signal frequency-domain position that the base station is then confirmed in uplink pilot time slot UpPTS according to the method described above receives this SRS signal.

For ease of understanding, with the example in the several application the present invention is further explained below.

Example one

This example is confirmed maximum SRS bandwidth by above-mentioned first kind of mode, and wherein: the up-link bandwidth is at the pairing RB number of frequency domain $N_{\mathrm{RB}}^{\mathrm{UL}}=25$ Base station selected call number is 4 a SRS band width configuration and with means of signaling notice terminal, again because $6\&le;N_{\mathrm{RB}}^{\mathrm{UL}}\&le;40$ , maximum SRS bandwidth is that call number is the SRS bandwidth of 4 the pairing tree ground floor of SRS band width configuration in the above-mentioned table 3, this maximum SRS bandwidth corresponding RB number on frequency domain is 16, promptly $m_{\mathrm{SRS},0}^{\mathrm{Max}}=16.$ And have: k _TC=0; n _{Offset, 1}=0; _{Noffset, 2}=4;

The pairing sub-carrier indices of original position of maximum SRS bandwidth is confirmed in terminal and base station according to following formula:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{otherwise}\end{array}\right.$

That is:

When the residing position of UpPTS makes $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})\&CenterDot;N_{\mathrm{SC}}^{\mathrm{RB}}+k_{\mathrm{TC}}=108$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 5 A.

When the residing position of UpPTS makes $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}=48.$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 5 B.

Example two

This example is confirmed maximum SRS bandwidth by the above-mentioned second way, wherein, and the pairing RB number of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=25$ , and N _RA=1, n _{Offset, 1}=0, n _{Offset, 2}=4; Then have: $N_{\mathrm{RB}}^{\mathrm{UL}}-6N_{\mathrm{RA}}-(n_{\mathrm{Offset},2}+n_{\mathrm{Offset},1})=15$ In all SRS bandwidth preparation tables; The SRS bandwidth of ground floor is in all SRS band width configuration of the pairing RB number of frequency domain≤15; Call number in the table 3 is that the SRS bandwidth of the corresponding tree ground floor of 5 SRS band width configuration is maximum, and it is 12 at the pairing RB number of frequency domain, promptly $m_{\mathrm{SRS},0}^{\mathrm{Max}}=12.$ In addition, k _TC=0.

The pairing sub-carrier indices of original position of maximum SRS bandwidth is confirmed in terminal and base station according to following formula:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{otherwise}\end{array}\right.$

That is:

When $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})\&CenterDot;N_{\mathrm{SC}}^{\mathrm{RB}}+k_{\mathrm{TC}}=156$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 6 A.

When $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}=48$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 6 B.

Example three

This example is confirmed maximum SRS bandwidth by above-mentioned first kind of mode, wherein: the pairing RB number of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=25;$ Base station selected call number is 4 a SRS band width configuration and with means of signaling notice terminal, because $6\&le;N_{\mathrm{RB}}^{\mathrm{UL}}\&le;40$ , maximum SRS bandwidth is that call number is the SRS bandwidth of 4 the pairing tree ground floor of SRS band width configuration in the table 3, this maximum SRS bandwidth corresponding RB number on frequency domain is 16, promptly $m_{\mathrm{SRS},0}^{\mathrm{Max}}=16;$ Other has: k _TC=0; n _{Offset, 1}=4; n _{Offset, 2}=0.

The pairing sub-carrier indices of original position of maximum SRS bandwidth is confirmed in terminal and base station according to following formula:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{otherwise}\end{array}\right.$

That is:

When the residing position of UpPTS makes $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})\&CenterDot;N_{\mathrm{SC}}^{\mathrm{RB}}+k_{\mathrm{TC}}=60,$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 7 A.

When the residing position of UpPTS makes $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}=0,$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 7 B.

Example four

This example is confirmed maximum SRS bandwidth by the above-mentioned second way, wherein, and the pairing RB number of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=25$ n _{Offset, 1}=4; n _{Offset, 2}=0; N _RA=1; Then have $N_{\mathrm{RB}}^{\mathrm{UL}}-6N_{\mathrm{RA}}-(n_{\mathrm{Offset},2}+n_{\mathrm{Offset},1})=15$ , because $6\&le;N_{\mathrm{RB}}^{\mathrm{UL}}\&le;40,$ And the SRS bandwidth of tree ground floor is in all SRS band width configuration of the pairing RB number of frequency domain≤15 in the table 3, and call number is that the SRS bandwidth of the corresponding tree ground floor of 5 SRS band width configuration is maximum, and it is 12 at the pairing RB number of frequency domain, promptly $m_{\mathrm{SRS},0}^{\mathrm{Max}}=12;$ Other has: k _TC=0.

The pairing sub-carrier indices of original position of maximum SRS bandwidth is confirmed in terminal and base station according to following formula::

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{otherwise}\end{array}\right.$

When $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})\&CenterDot;N_{\mathrm{SC}}^{\mathrm{RB}}+k_{\mathrm{TC}}=108$ , the position of the maximum SRS bandwidth of this moment is shown in Fig. 8 A.

When $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}=0,$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 8 B.

Example five

In this example the mode of confirming maximum SRS bandwidth is not limited.The pairing RB number of up-link bandwidth $N_{\mathrm{RB}}^{\mathrm{UL}}=25$ Maximum SRS bandwidth corresponding RB number on frequency domain is 16, promptly $m_{\mathrm{SRS},0}^{\mathrm{Max}}=16.$ k _TC=1, n _{Offset, 1}=0; n _{Offset, 2}=4.

The original position of maximum SRS bandwidth is confirmed at the terminal according to following formula:

${\mathrm{<figure-callout\; id="0"\; label="k"\; filenames="H2008101735067E00021.png,H2008101735067E00043.png"\; state="\{\{state\}\}">k</figure-callout>}}_0^{\&prime;}=\left\{\begin{array}{cc}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\max }-n_{\mathrm{offset},1})N_{\mathrm{sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}& \mathrm{if}(\left(n_f\mathrm{mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">mod</figure-callout>}2=0\\ k_{\mathrm{TC}}+n_{\mathrm{offset},2}\&CenterDot;N_{\mathrm{sc}}^{\mathrm{RB}}& \mathrm{otherwise}\end{array}\right.$

That is:

When the residing position of UpPTS makes $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2=0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})\&CenterDot;N_{\mathrm{SC}}^{\mathrm{RB}}+k_{\mathrm{TC}}=109$ , the position of the maximum SRS bandwidth of this moment is shown in Fig. 9 A.

When the residing position of UpPTS makes $(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{<figure-callout\; id="2"\; label="Mod"\; filenames="H2008101735067E00033.png,H2008101735067E00041.png"\; state="\{\{state\}\}">Mod</figure-callout>}2\&NotEqual;0$ The time, the sub-carrier indices of the original position of maximum SRS bandwidth $k_{}^{}$ ${}_0^{\&prime;}=k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}=49,$ The position of the maximum SRS bandwidth of this moment is shown in Fig. 9 B.

Claims (12)

1. the mapping method of a uplink channel measurement reference signal frequency domain position; Be applied to adopt in the long evolving system of TDD mode; In uplink pilot time slot UpPTS during transmission measurement reference signal SRS; According to confirming to it is characterized in that the frequency domain position of this SRS with respect to the offset of this maximum SRS bandwidth for the frequency domain position of the maximum SRS bandwidth of the selected SRS band width configuration of this SRS and this SRS bandwidth:

When confirming the frequency domain position of this maximum SRS bandwidth, the frequency domain position that the frequency domain position and the Physical Random Access Channel in this UpPTS of this maximum SRS bandwidth is the PRACH channel staggers;

And; The distance of the frequency domain end position of this maximum SRS bandwidth and the coboundary of up-link bandwidth is more than or equal to one first deviate of configuration; And/or the distance of the frequency domain original position of this maximum SRS bandwidth and the lower boundary of up-link bandwidth is more than or equal to one second deviate of configuration.

2. mapping method as claimed in claim 1 is characterized in that:

The frequency domain original position of said maximum SRS bandwidth, promptly maximum SRS bandwidth are mapped to the index of first subcarrier on the frequency domain and confirm according to following formula:

$k_0^{\&prime;}=\left\{\begin{array}{c}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})N_{\mathrm{Sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}\\ k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}\end{array}\right.$ When $\begin{array}{c}(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{Mod}2=0\\ (\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{Mod}2\&NotEqual;0\end{array}$ The time,

Wherein:

k _TCBe the sub-carrier offset amount of the pectinate texture of said SRS configuration, k _TC∈ 0,1}; Size for RB on the frequency domain is expressed as sub-carrier number;

For the up-link bandwidth at the pairing RB number of frequency domain; N _SPIn the radio frames of said SRS place, the quantity of downstream-to-upstream transfer point; n _fSystem Frame Number for said SRS place radio frames;

First field of expression radio frames,

Second field of expression radio frames; Be the corresponding RB number of maximum SRS bandwidth; n _{Offset, 1}Be said first deviate,

The time, n _{Offset, 1}Be the Resource Block index and the Resource Block index at maximum SRS bandwidth frequency domain end position place

Deviation; n _{Offset, 2}Be said second deviate,

The time, n _{Offset, 2}Be the Resource Block index at maximum SRS bandwidth frequency domain original position place and the deviation of Resource Block index 0.

3. mapping method as claimed in claim 2 is characterized in that:

Said maximum SRS bandwidth is confirmed by following mode: a base station selected SRS band width configuration and with signaling method notice terminal, said maximum SRS bandwidth

is confirmed as with the SRS bandwidth of ground floor in the tree of this SRS band width configuration correspondence in base station and terminal

4. mapping method as claimed in claim 2 is characterized in that:

Said maximum SRS bandwidth equals the SRS bandwidth for ground floor in the corresponding tree of the selected SRS band width configuration of said SRS, and the SRS band width configuration is selected according to following manner in base station and terminal:

In corresponding the SRS bandwidth configuration table or all SRS bandwidth configuration table, from maximum SRS bandwidth

All SRS band width configuration in, select a maximum SRS band width configuration of maximum SRS bandwidth, as selected SRS band width configuration, wherein, N _RAQuantity for PRACH channel in the UpPTS of SRS place.

5. like claim 1 or 2 or 3 or 4 described mapping methods, it is characterized in that:

Said first deviate is according to the requirement of the protection bandwidth at boundary place configuration on top between said up-link bandwidth and the other system bandwidth, and said second deviate disposes according to the requirement in the protection bandwidth at lower boundary place between said up-link bandwidth and the other system bandwidth.

6. mapping method as claimed in claim 5 is characterized in that:

The terminal is in said uplink pilot time slot UpPTS, and according to this SRS of frequency domain position transmission of the said SRS that confirms, the frequency domain position of the said SRS that the base station is then confirmed in said uplink pilot time slot UpPTS receives this SRS.

7. the mapping method of the frequency domain position of a uplink channel measurement reference signal bandwidth scope; Be applied to adopt in the long evolving system of TDD mode; When being used in uplink pilot time slot UpPTS transmission measurement reference signal SRS, confirm that according to following formula this SRS bandwidth range is mapped to the index k ' of first subcarrier on the frequency domain ₀, this SRS bandwidth range is the frequency band range at the maximum SRS bandwidth place of the selected SRS band width configuration of this SRS:

$k_0^{\&prime;}=\left\{\begin{array}{c}(N_{\mathrm{RB}}^{\mathrm{UL}}-m_{\mathrm{SRS},0}^{\mathrm{Max}}-n_{\mathrm{Offset},1})N_{\mathrm{Sc}}^{\mathrm{RB}}+k_{\mathrm{TC}}\\ k_{\mathrm{TC}}+n_{\mathrm{Offset},2}\&CenterDot;N_{\mathrm{Sc}}^{\mathrm{RB}}\end{array}\right.$ When $\begin{array}{c}(\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{Mod}2=0\\ (\left(n_f\mathrm{Mod}2\right)\&times;(2-N_{\mathrm{SP}})+t_{\mathrm{RA}}^1)\mathrm{Mod}2\&NotEqual;0\end{array}$ The time,

Wherein:

k _TCBe the sub-carrier offset amount of the pectinate texture of said SRS configuration, k _TC∈ 0,1}; Size for RB on the frequency domain is expressed as sub-carrier number;

For the up-link bandwidth at the pairing RB number of frequency domain; N _SPIn the radio frames of said SRS place, the quantity of downstream-to-upstream transfer point; n _fSystem Frame Number for said SRS place radio frames;

First field of expression radio frames,

Second field of expression radio frames;

Be the corresponding RB number of maximum SRS bandwidth; n _{Offset, 1}First deviate for configuration; n _{Offset, 2}Second deviate for configuration.

8. mapping method as claimed in claim 7 is characterized in that,

Said maximum SRS bandwidth is confirmed by following mode: a base station selected SRS band width configuration and with signaling method notice terminal, said maximum SRS bandwidth is confirmed as with the SRS bandwidth of ground floor in the tree of this SRS band width configuration correspondence in base station and terminal

9. mapping method as claimed in claim 8 is characterized in that,

The maximum SRS bandwidth of said base station selected SRS band width configuration

Must satisfy

N wherein _RAQuantity for PRACH channel in the UpPTS of SRS place.

10. mapping method as claimed in claim 7 is characterized in that:

Said maximum SRS bandwidth equals the SRS bandwidth for ground floor in the corresponding tree of the selected SRS band width configuration of said SRS, and the SRS band width configuration is selected according to following manner in base station and terminal:

In corresponding the SRS bandwidth configuration table or all SRS bandwidth configuration table, from maximum SRS bandwidth

All SRS band width configuration in, select a maximum SRS band width configuration of maximum SRS bandwidth, as selected SRS band width configuration, wherein, N _RAQuantity for PRACH channel in the UpPTS of SRS place.

11., it is characterized in that like claim 7 or 8 or 9 or 10 described mapping methods:

When

, said first deviate is the Resource Block index at maximum SRS bandwidth frequency domain end position place and the deviation of Resource Block index

;

When

, said second deviate is the Resource Block index at maximum SRS bandwidth frequency domain original position place and the deviation of Resource Block index 0.

12. mapping method as claimed in claim 7 is characterized in that:

Said first deviate is according to the requirement of the protection bandwidth at boundary place configuration on top between said up-link bandwidth and the other system bandwidth, and said second deviate disposes according to the requirement in the protection bandwidth at lower boundary place between said up-link bandwidth and the other system bandwidth.

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