CN104283582A - Method for determining frequency hopping pattern of sounding reference signal (SRS) and terminal - Google Patents

Abstract

The invention provides a method for determining a frequency hopping pattern of a sounding reference signal (SRS) and a terminal. The method for determining the frequency hopping pattern of the SRS comprises the steps that the terminal constructs a first summary table and a second summary table, the first summary table comprises a plurality of first subtables, and the second summary table comprises a plurality of second subtables; the terminal obtains a corresponding sequence through table lookup according to whether a base station enables the frequency of the SRS to hop, identifiers from a zero layer to a BSRS layer of a tree structure are obtained through the sequence, the frequency domain position of the current SRS is determined according to the identifiers, and further the frequency hopping pattern of the SRS is determined. Through the method for determining the frequency hopping pattern of the SRS and the terminal, the frequency hopping pattern of the SRS can be rapidly and conveniently determined according to related SRS sending parameters configured by the base station.

Description

One determines detection reference signal frequency hopping pattern method and terminal

Technical field

The present invention relates to wireless communication field, particularly relate to the terminal (UE) in third generation partner program (3GPP) Long Term Evolution (LTE) system and a kind of method and terminal determining detection reference signal (SRS) frequency hopping pattern of up transmission.

Background technology

In 3GPP LTE system, in order to assistant base station (eNodeB) carries out up channel measurement, terminal in community, configuration place, base station sends detection reference signal (Sounding Reference Signal, hereinafter referred to as SRS) on some specific time-frequency resources.Based on the measurement result of received SRS, base station can send for the Physical Uplink Shared Channel of this terminal (PUSCH), carry out frequency domain dispatching (frequency-domain scheduling), and determine that reverse link traffic channel transmits modulation used and coded system, improve the availability of frequency spectrum of up link.

In LTE system, channel width is divided into some Resource Block (RB), all upward signals or channel, all distribute in units of Resource Block.On frequency domain, the width of a RB is 12 subcarriers, i.e. 180kHz.Number of resource blocks total in channel width, is determined by channel width, and such as, LTE system 20MHz bandwidth option contains 50 RB altogether containing 100 RB, 10MHz bandwidth options altogether.

In order to carry out ascending channel detecting, when base station is terminal distribution SRS resource, it is orthogonal for needing the SRS guaranteeing each terminal to send signal.Such as, base station is by being the time resource (subframe) and/or the means such as different frequency resource (RB) and/or different code resources (cyclic shift) that in community, each terminal distribution is different, carry out the division of available SRS resource in community, thus ensure that the SRS that each terminal sends does not disturb each other.And, in order to ensure single carrier (SC-FDMA (the frequency division multiple access of upward signal, frequency division multiple access) characteristic, base station always configures each terminal and carry out SRS transmission on several RB continuous, namely always comprises several RB continuously in SRS transmission bandwidth.

For said system demand, in 3GPP LTE specification TS 36.211 5.5.3.2 saves, define different SRS band width configuration parameter (Table 5.5.3.2-1 ~ Table 5.5.3.2-4) for different channel width respectively.Such as, for 20MHz bandwidth (up contain 100 RB), see table:

In upper table, parameter " SRS band width configuration " (SRS Bandwidth Configuration) represents total frequency domain resource that base station is the SRS transmission distribution of all terminals in community, is therefore cell-level (cell-specific) parameter; Another parameter " SRS-bandwidth " then represents for specific terminal (UE-specific), according to system needs, and the bandwidth shared by the actual SRS distributed sends.In order to express easily, SRS band width configuration variable C _sRSrepresentative, and SRS-bandwidth variable B _sRSrepresentative.Configure flexibly to provide, base station according to the actual requirements, can configure C respectively _sRSand B _sRSparameter.More than table is example, and community has allowed 8 kinds of SRS band width configuration, minimum 48 RB, maximum 96 RB; And for specific terminal, then allow the SRS-band width configuration that 4 kinds are different, minimum desirable 4 RB, maximumly take whole SRS band width configuration.Due in LTE system, the minimum bandwidth of SRS is 4RB, and allows to send in 96 RB frequency domain at most, therefore there is the possible frequency domain of 96/4=24 kind and sends original position.Accordingly, base station is that each terminal specifies a SRS frequency domain position indexing parameter n _rRC, its span is the integer in [0,23] scope, and according to this parameter, terminal just can determine that it sends the frequency domain position of SRS.

Distribute from frequency domain resource, on the one hand, in order to obtain better frequency domain dispatching gain, expect that terminal carries out SRS transmission in wider frequency range, namely need SRS transmission bandwidth to arrange larger, thus base station can obtain close to the up channel measurement result in whole channel width; But then, consider in community that may there is great amount of terminals needs to send SRS, and uplink assignment is limited to the total resources of SRS transmission, therefore expects again the SRS bandwidth that each terminal of restriction sends.In order to solve this contradiction, in LTE specification, define a kind of SRS " frequency hopping " (Frequency Hopping) pattern.Under this frequency-hopping mode, although the SRS bandwidth that terminal sends is less at every turn, can by not sending on different frequency domain positions in the same time, after a SRS hop period, can the wider bandwidth of complete covering one.For the frequency hopping pattern shown in Fig. 1, with reference to upper table, suppose parameter C _sRS=6, B _sRS=3 and n _rRCin=0, figure, black box represents corresponding frequency domain position and have sent SRS, and white box then represents and do not send.Assuming that base station enables SRS frequency hopping, each SRS actual transmission bandwidth is 4 RB, after the SRS of 48/4=12 frequency domain position different from each other in a SRS hop period sends, the portions of the spectrum of whole 48 RB can be covered, then continue to repeat this frequency hopping pattern in next SRS hop period.Wherein, in a SRS hop period, the initial RB offset sequence selected by SRS sends, be called SRS " frequency hopping pattern " (Frequency Hopping Pattern), in this example embodiment, SRS frequency hopping pattern is { 0,6,3,9,1,7,4,10,3,8,5,11}.Different terminals in community, although may there be identical frequency-hopping mode, can pass through SRS frequency domain position index n _rRCas " benchmark ", SRS between them still can be avoided to send the conflict of frequency domain position, do not interfere with each other mutually.

Have employed one " tree " type structure in the 3 gpp specifications and assist the definition carrying out SRS frequency hopping pattern.This " tree " comprises maximum 4 layers, uses b=0 successively respectively, 1,2, and 3 mark, and wherein b=0 correspondence " tree " is top, i.e. root node.In b layer, the RB number that each node on " tree " comprises in frequency equals m _{sRS, b}, and N _bthen represent branch node number that b-1 node layer comprises, that be positioned at b layer.Be somebody's turn to do in " tree " type structure, be in each node of b layer, can by of 0th ~ b layer group mark { n ₀, n ₁..., n _buniquely determine (0≤n _b< N _b).Each node in " tree ", just represents SRS and is sent in bandwidth sum start offset shared by frequency domain.See a tree example of Fig. 2, wherein show a Digital ID n in each node _b.

If base station enables SRS frequency hopping, terminal is on the one hand according to the SRS band width configuration B of base station configuration _sRS, can based on b=B _sRSto determine in " tree " residing layer, obtain the actual bandwidth that SRS sends at every turn and equal on the other hand, " SRS frequency hopping bandwidth " parameter b configuring according to base station of terminal _hop, can based on b=b _hopto determine in " tree " another residing layer, obtain the total bandwidth that SRS frequency hopping covers and equal like this, based on this " tree " type structure, SRS frequency hopping pattern can be defined easily: send according to SRS and count n opportunity _sRS, determine that corresponding SRS is sent in skew residing for frequency domain and bandwidth, namely determine one group of mark { n ₀, n ₁..., n _b.In 3GPP LTE specification TS 36.211 5.5.3.2 saves, adopt following formula definition n _b(b=0,1 ..., B _sRS):

The physical meaning of above formula, can understand from two aspects, on the one hand according to the SRS frequency domain position index n of base station configuration _rRCthe reference position that SRS launches can be determined: on the other hand, on this basis, from b _hop+ 1 layer starts to B _sRSlayer, adds a SRS frequency hopping pattern frequency offset F _b(n _sRS), the actual frequency domain finally obtaining SRS sends position.Note, this formula has unified SRS frequency hopping forbidding and two kinds of enable situations, and for the situation of forbidding SRS frequency hopping, base station only needs to configure b _hop>=B _sRS, now would not enter that branch below in above formula and go to calculate frequency hopping pattern frequency offset F _b(n _sRS).In the example of fig. 1, { n is given ₀, n ₁..., n _bvalue and actual hopping position between association.Hopping pattern period equals

The determination principle of SRS frequency hopping pattern comprises 2 points: (1) does not repeat in a hop period, and complete covering for SRS band width configuration; (2) continuous two SRS send between frequency domain position, and frequency interval should be tried one's best greatly.In order to meet the demand, in 3GPP LTE specification TS 36.211 5.5.3.2 saves, give SRS frequency hopping pattern frequency offset F _b(n _sRS) a kind of computing formula:

According to above formula, UE can calculate SRS frequency hopping pattern frequency offset, thus can determine the frequency domain position of SRS Frequency hopping transmissions further.

From above formula, although this formula unambiguously can provide SRS frequency hopping pattern frequency offset computing formula, form is comparatively succinct, takes advantage of owing to relate to such as to connect in calculating delivery (mod), to round downwards with take advantage of/the calculating such as division, the computation complexity of terminal is relatively high.In addition, the calculating of the reference position that the SRS be associated launches, i.e. basis formula determines n _bvalue, also relates to division, rounds downwards, the calculating such as delivery.

Terminal utilizes above-mentioned formula to come online (on-line) and calculates SRS frequency hopping pattern, will bring no small complexity: if adopt the soft mode of processor to calculate, by causing, the operating frequency needed for terminal handler is higher, causes power consumption to increase; If adopt hardware circuit to calculate, by increasing the expense of hardware circuit, cause the increase of terminal cost.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of method and the terminal of determining detection reference signal frequency hopping pattern, to determine SRS frequency hopping pattern quickly and easily.

In order to solve the problems of the technologies described above, the invention provides a kind of method determining detection reference signal frequency hopping pattern, comprising:

Terminal constructions first matrix and the second matrix, wherein, the first matrix comprises multiple first sublist, and the second matrix comprises multiple second sublist;

Described terminal is according to system uplink bandwidth N _rB ^uLwith the detection reference signal band width configuration parameter C that base station issues _sRS, from described first matrix, select first sublist;

The detection reference signal bandwidth parameter B that described terminal issues according to described base station _sRSwith detection reference signal frequency domain position indexing parameter n _rRC, based on the first selected sublist with n _rRCas index, obtain comprising B by tabling look-up _sRSthe sequence { p (i) } of+1 element, wherein, i=0 ..., B _sRS;

Described in described terminal judges, whether base station enables detection reference signal frequency hopping, as base station as described in judging enables detection reference signal frequency hopping, then by following steps determination detection reference signal frequency hopping pattern:

According to described N _rB ^uLwith described C _sRSsecond sublist is selected from described second matrix;

According to the detection reference signal frequency hopping bandwidth parameter b that described base station issues _hop, in each detection reference signal hop period, send according to detection reference signal and count n opportunity _sRS, based on the second selected sublist, with n ' _sRS=(n _sRSmodP) S is as index, obtains comprising B by tabling look-up _sRS-b _hopthe sequence of individual element: { q (j) }, wherein, j=b _hop+ 1 ..., B _sRS, S is and b _hopa relevant step-length, represent b in detection reference signal tree _hopbandwidth corresponding to layer, represent B in detection reference signal tree _sRSbandwidth corresponding to layer,

By described sequence { p (i) }, and described sequence { p (i) } and described sequence { q (j) } are added, and obtain tree the 0th respectively to B _sRSthe mark n of layer _b:

For 0≤b≤b _hop, n _b=p (b),

For b _hop< b≤B _sRS, n _b=(p (b)+q (b)) mod N _b,

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern;

Described terminal as the not enable detection reference signal frequency hopping in base station as described in judging, then by following steps determination detection reference signal frequency hopping pattern:

Tree the 0th is obtained to B by described sequence { p (i) } _sRSthe mark n of layer _b:

n _b＝p(b)，b＝0，…，B _SRS

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern.

Further, said method also has feature below: described in described terminal judges, whether base station enables detection reference signal frequency hopping, comprising:

Described terminal reads the detection reference signal frequency hopping bandwidth parameter b in the specialized configuration that described base station issues _hop, then with described B _sRScompare, if b _hop< B _sRS, then judge that described base station enables detection reference signal frequency hopping; If b _hop>=B _sRS, then the not enable SRS frequency hopping in described base station is judged.

Further, said method also has feature below:

Described first sublist comprises 24 row, is corresponding in turn to described n _rRCinstitute's likely value;

Described second sublist comprises m _{sRS, 0}/ 4 row, have been corresponding in turn to b _hopdetection reference signals all in a detection reference signal hop period when=0 sends opportunity, wherein, and m _{sRS, 0}representing the bandwidth corresponding to SRS tree the 0th layer, is according to described N _rB ^uLwith described C _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.

Further, said method also has feature below:

In described first sublist and described second sublist, often row all contains 4 nonnegative integers.

Further, said method also has feature below:

All N have been corresponding in turn in described first matrix _rB ^uLand C _sRScombination;

All N have been corresponding in turn in described second matrix _rB ^uLand C _sRScombination.

In order to solve the problem, present invention also offers a kind of terminal, wherein, comprise:

Constructing module, for constructing the first matrix and the second matrix, wherein, the first matrix comprises multiple first sublist, and the second matrix comprises multiple second sublist;

Select module, for according to system uplink bandwidth N _rB ^uLwith the detection reference signal band width configuration parameter C that base station issues _sRS, from described first matrix, select first sublist;

Table look-up module, for the detection reference signal bandwidth parameter B issued according to base station _sRSwith detection reference signal frequency domain position indexing parameter n _rRC, based on the first selected sublist with n _rRCas index, obtain comprising B by tabling look-up _sRSthe sequence { p (i) } of+1 element, wherein, i=0 ..., B _sRS;

Judge module, for judging whether described base station enables detection reference signal frequency hopping;

First determination module, for judging that described base station enables detection reference signal frequency hopping at described judge module, then determine detection reference signal frequency hopping pattern by following:

According to described N _rB ^uLwith described C _sRSsecond sublist is selected from described second matrix;

According to the detection reference signal frequency hopping bandwidth parameter b that described base station issues _hop, in each detection reference signal hop period, send according to detection reference signal and count n opportunity _sRS, based on the second selected sublist, with n ' _sRS=(n _sRSmod P) S as index, obtain comprising B by tabling look-up _sRS-b _hopthe sequence of individual element: { q (j) }, wherein, j=b _hop+ 1 ..., B _sRS, S is and b _hopa relevant step-length, represent b in detection reference signal tree _hopbandwidth corresponding to layer, represent B in detection reference signal tree _sRSbandwidth corresponding to layer,

By described sequence { p (i) }, and described sequence { p (i) } and described sequence { q (j) } are added, and obtain tree the 0th respectively to B _sRSthe mark n of layer _b:

For 0≤b≤b _hop, n _b=p (b),

For b _hop< b≤B _sRS, n _b=(p (b)+q (b)) mod N _b,

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern;

Second determination module, for judging the not enable detection reference signal frequency hopping in described base station at described judge module, then determine detection reference signal frequency hopping pattern by following:

Tree the 0th is obtained to B by described sequence { p (i) } _sRSthe mark n of layer _b:

n _b＝p(b)，b＝0，…，B _SRS

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern.

Further, above-mentioned terminal also has feature below:

Described judge module, specifically for reading the detection reference signal frequency hopping bandwidth parameter b in specialized configuration that described base station issues _hop, then with described B _sRScompare, if b _hop< B _sRS, then judge that described base station enables detection reference signal frequency hopping; If b _hop>=B _sRS, then the not enable SRS frequency hopping in described base station is judged.

Further, above-mentioned terminal also has feature below:

Described first sublist of described structure module construction comprises 24 row, is corresponding in turn to described n _rRCinstitute's likely value; Described second sublist comprises m _{sRS, 0}/ 4 row, have been corresponding in turn to b _hopdetection reference signals all in a detection reference signal hop period when=0 sends opportunity, wherein, and m _{sRS, 0}representing the bandwidth corresponding to SRS tree the 0th layer, is according to described N _rB ^uLwith described C _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.

Further, above-mentioned terminal also has feature below:

In described first sublist of described structure module construction and described second sublist, often row all contains 4 nonnegative integers.

Further, above-mentioned terminal also has feature below:

All N have been corresponding in turn in described first matrix of described structure module construction _rB ^uLand C _sRScombination; All N have been corresponding in turn in described second matrix _rB ^uLand C _sRScombination.

To sum up, the invention provides a kind of method and the terminal of determining detection reference signal frequency hopping pattern, parameter can be sent according to the related SR S of base station configuration, determine SRS frequency hopping pattern comparatively quickly and easily.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of a SRS frequency hopping pattern.

Fig. 2 is a schematic diagram being used for determining SRS frequency hopping pattern " tree " type structure.

Fig. 3 is the flow chart of the method for the determination detection reference signal frequency hopping pattern of the embodiment of the present invention.

Fig. 4 is the structural representation of first matrix (containing some first sublists) of the embodiment of the present invention.

Fig. 5 is the structural representation of second matrix (containing some second sublists) of the embodiment of the present invention.

Fig. 6 is according to different SRS frequency parameter b _hopconfiguration, adopts the schematic diagram of different step-length when looking into the second sublist.

Fig. 7 is the schematic diagram of the terminal of the embodiment of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.

Below in conjunction with Fig. 3 ~ Fig. 6, preferably implement to be described in further detail for one to technical scheme:

Step 310, terminal constructions first matrix and the second matrix, wherein, the first matrix comprises several the first sublists, and the second matrix comprises several the second sublists.

Related definition during terminal saves based on 3GPP TS 36.211 specification 5.5.3.2 in advance, constructs the first matrix.Utilize the first matrix, terminal can according to the SRS frequency domain position index n of base station configuration _rRCtable look-up and obtain the reference position of SRS frequency hopping pattern.

With reference to figure 4, in the first matrix 400, according to upstream bandwidth N _rB ^uL, contain respectively for 6≤N _rB ^uL≤ 40,40 < N _rB ^uL≤ 60,60 < N _rB ^uL≤ 80 and 80 < N _rB ^uL≤ 110 these four N _rB ^uLthe form of span.For in the form 410 of wherein certain scope, corresponding all possible SRS band width configuration C respectively again _sRS(0≤C _sRS≤ 7) 8 the first sublists 420, are contained.In each first sublist 420, respectively for each possible n _rRCvalue (0≤n _rRC≤ 23), corresponding d is contained ₀, d ₁, d ₂and d ₃value.Such as, the Related Formula in saving according to 3GPP TS 36.211 specification 5.5.3.2, can press:

Calculate d _bvalue.Consider d _bvalue be can not nonnegative integer more than 6, therefore the most multiplex 3 bits just can represent, conveniently store every and adopt integer bytes store, therefore adopt to be no more than 2 bytes and just can to store d ₀, d ₁, d ₂and d ₃.Like this, the structure of the first matrix 400 is just completed.In first matrix, total total 4*8=32 opens the first such sublist, and wherein each first sublist comprises 24, and the storage of every is no more than 2 bytes.Therefore, the total size of the first matrix is no more than 32*24*2=1536 byte.This first matrix can be stored in ROM or FLASH by terminal.The size of the first sublist is no more than 24*2=48 byte.

On the other hand, the related definition during terminal saves based on 3GPP TS 36.211 specification 5.5.3.2 in advance, constructs the second matrix.Utilize the second matrix, terminal can send according to SRS and count n opportunity _sRStable look-up and obtain the frequency offset of SRS frequency hopping pattern.

With reference to figure 5, in the second matrix 500, according to upstream bandwidth N _rB ^uL, contain respectively for 6≤N _rB ^uL≤ 40,40 < N _rB ^uL≤ 60,60 < N _rB ^uL≤ 80 and 80 < N _rB ^uL≤ 110 these four N _rB ^uLthe form of span.For in the form 510 of wherein certain scope, corresponding all possible SRS band width configuration C respectively again _sRS(0≤C _sRS≤ 7) 8 the second sublists 520, are contained.In each second sublist 520, send counting n for SRS each in hop period respectively _sRSpossible value, contain corresponding d ₀, d ₁, d ₂and d ₃value.Such as, the Related Formula in saving according to 3GPP TS 36.211 specification 5.5.3.2, can press:

(b＝0，1，2，3)

Calculate d _bvalue.Consider d _bvalue be can not nonnegative integer more than 6, therefore the most multiplex 3 bits just can represent, conveniently store every and adopt integer bytes store, therefore adopt to be no more than 2 bytes and just can to store d ₀, d ₁, d ₂and d ₃.Like this, the structure of the second matrix 500 is just completed.The degree of depth of the second sublist can by formula: D=m _{sRS, 0}/ 4 calculate, wherein, and m _{sRS, 0}representing the bandwidth corresponding to SRS tree the 0th layer, is according to N _rB ^uLand C _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.Such as, according to the related definition in 5.5.3.2 joint in 36.211 specifications, corresponding 4 kinds of N _rB ^uLspan, m _{sRS, 0}value be maximumly no more than 36,48,72 and 96 respectively, therefore the line number D of corresponding second sublist is no more than 9,12,18 and 24.In second matrix, total total 4*8=32 opens the second such sublist, and each second sublist comprises D item, and the storage of every is no more than 2 bytes like this, and the total size of such second matrix is no more than: (9+12+18+24) * 8*2=1008 byte.This first matrix can be stored in ROM or FLASH by terminal.The size of the second sublist is no more than 24*2=48 byte.

Step 320, terminal receives system uplink bandwidth N _rB ^uL, and the SRS band width configuration parameter C that issues of base station _sRSafter, according to N _rB ^uLand C _sRSthe first sublist is selected from the first matrix.

Accessing terminal to network, after reading the system message that issues of base station and community common configuration, can obtain upstream bandwidth N _rB ^uL, and SRS band width configuration parameter C _sRS.According to N _rB ^uLand C _sRS, terminal from 32 the first sublists contained by the first matrix, can choose corresponding first sublist.The first selected sublist can be loaded into DBB chip internal from ROM or FLASH, can conduct interviews fast by terminal.Size due to the first sublist is no more than 48 bytes, therefore moves the expense after DBB chip internal very little.

Step 330, according to the SRS-bandwidth parameter B that base station issues _sRSwith SRS frequency domain position indexing parameter n _rRC, based on the first sublist, with n _rRCas index, obtain comprising B by tabling look-up _sRSthe sequence of+1 element: p (0), p (1) ..., p (B _sRS).

After accessing terminal to network, reading base station issues the SRS-bandwidth parameter B in dedicated signaling _sRS, the actual bandwidth shared by each SRS transmission can be determined, therefore only need to determine front B in " tree " type structure _sRSthe mark n of+1 layer _b, wherein b=0,1 ..., B _sRS.Based on the first selected in step 320 sublist, the SRS frequency domain position indexing parameter n indicated in dedicated signaling according to base station _rRC, after looking into the first sublist, corresponding d can be obtained ₀, d ₁, d ₂and d ₃value, gets B wherein _sRS+ 1, obtain comprising B _sRSthe sequence of+1 element: p (0), p (1) ..., p (B _sRS):

p(i)＝d _b，i＝0，1，…，B _SRS

Wherein, each element p (i) is a nonnegative integer, and its span is 0≤p (i)≤N _b, i=0,1 ..., B _sRS.

Then, terminal reads the SRS frequency hopping bandwidth parameter b in the specialized configuration that issues of base station _hop, then with parameter B _sRSafter comparing, judge whether base station enables SRS frequency hopping.If b _hop< B _sRS, then base station enables SRS frequency hopping, and order performs step 340 to step 360; If b _hop>=B _sRS, then the not enable SRS frequency hopping in base station, jumps to step 370 and performs.

Step 340, according to system uplink bandwidth N _rB ^uL, and the SRS band width configuration parameter C that issues of base station _sRS, from the second matrix, select second sublist.

Accessing terminal to network, after reading the system message that issues of base station and community common configuration, can obtain upstream bandwidth N _rB ^uL, and SRS band width configuration parameter C _sRS.According to N _rB ^uLand C _sRS, terminal from 32 the second sublists contained by the second matrix, can choose corresponding second sublist.The second selected sublist can be loaded into DBB chip internal from ROM or FLASH, can conduct interviews fast by terminal.Size due to the second sublist is no more than 48 bytes, therefore moves the expense after DBB chip internal very little.

Step 350, according to the SRS frequency hopping bandwidth parameter b that base station issues _hop, in each SRS hop period, send according to SRS and count n opportunity _sRS, based on the second selected sublist, with n ' _sRS=(n _sRSmodP) S is index, obtains comprising B by tabling look-up _sRS-b _hopthe sequence of individual element: q (b _hop+ 1), q (b _hop+ 2) ..., q (B _sRS).

Send according to SRS and count n opportunity _sRS, and according to parameter b _hop, determine the index looking into the second sublist: n ' _sRS=(n _sRSmod P) S.

Wherein, P is by parameter b _hopand B _sRScommon decision, represent b in detection reference signal tree _hopbandwidth corresponding to layer, represent B in detection reference signal tree _sRSbandwidth corresponding to layer, and the value of P can not more than the line number D of the second sublist.Work as b _hopwhen=0, the P=D i.e. line number of the second sublist, chooses step-length S=N ₀=1; Work as b _hopduring > 0, " nested " characteristic of the second sublist can be utilized, continue employing second sublist and table look-up, but amendment step-length is $S={\mathrm{\&Pi;}}_{b=0}^{b=b_{\mathrm{hop}}}{N}_b.$

See the example of Fig. 6, in this example, assume B _sRS=3.Then, based on the second selected in step 340 sublist, with n ' _sRSas index, after looking into the second sublist, corresponding d can be obtained ₀, d ₁, d ₂and d ₃value, gets wherein b _hop+ 1 to B _sRS, obtain B _sRS-b _hopthe sequence of individual element: q (b _hop+ 1), q (b _hop+ 2) ..., q (B _sRS):

q(i)＝d _b，i＝b _hop+1，b _hop+2，…，B _SRS

Wherein, each element q (i) is a nonnegative integer, and its span is 0≤q (i)≤N _b, i=b _hop+ 1, b _hop+ 2 ..., B _sRS.

In this example, corresponding parameter b _hop=0, computable and to hop period $P=m_{\mathrm{SRS},b_{\mathrm{hop}}}/m_{\mathrm{SRS},B_{\mathrm{SRS}}}=48/4=12,$ Step-length $S={\mathrm{\&Pi;}}_{b=0}^{b=b_{\mathrm{hop}}}{N}_b=N_0=1;$

Corresponding parameter b _hop=1, computable and to hop period step-length $S={\mathrm{\&Pi;}}_{b=0}^{b=b_{\mathrm{hop}}}{N}_b=N_0\&CenterDot;N_1=1\&CenterDot;2=2;$

Corresponding parameter b _hop=2, computable and to hop period step-length $S={\mathrm{\&Pi;}}_{b=0}^{b=b_{\mathrm{hop}}}{N}_b=N_0\&CenterDot;N_1\&CenterDot;N_2=1\&CenterDot;2\&CenterDot;2=4.$

Step 360, by described sequence { p (i) }, and described sequence { p (i) } and described sequence { q (i) } are added, obtain respectively tree the 0th, the 1st ..., B _sRSthe mark n of layer _b:

For 0≤b≤b _hop, n _b=p (b)

For b _hop< b≤B _sRS, n _b=(p (b)+q (b)) mod N _b;

Then step 380 is turned to.

Step 370, if b _hop>=B _sRS, then the not enable SRS frequency hopping in base station, jumps to step 370 and performs, the described sequence { p (i) } obtained by step 330 obtain respectively tree the 0th, the 1st ..., B _sRSthe mark n of layer _b, n _b=p (b), then turns to step 380.

Step 380, based on mark just can determine the frequency domain position obtaining current SRS transmission.

By following formula, based on " tree " type structure, the frequency domain original position of each SRS transmission, i.e. RB skew can be calculated:

$k_{\mathrm{RB}}=\underset{b=0}{\overset{B_{\mathrm{SRS}}}{\mathrm{\&Sigma;}}}{m}_{\mathrm{SRS},b}\&CenterDot;n_b$

Wherein, m _{sRS, b}according to N _rB ^uL, C _sRSand B _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.

Like this, for the situation of enable SRS frequency hopping, by the treatment step of P such above-mentioned steps 310 to step 360 and step 380 altogether in a SRS hop period, SRS frequency hopping pattern can be obtained.For the situation of not enable SRS frequency hopping, by above-mentioned steps 310 to step 330 and step 370 and step 380, SRS can be obtained and send a fixing frequency domain position.Wherein, step 310, i.e. form structure can perform in advance, and namely step 320 can perform after the common configuration reading base station, and therefore step 310 and step 320 are without the need to repeating.

Wherein:

First sublist comprises 24 row, is corresponding in turn to n _rRCinstitute's likely value of index;

Second sublist comprises D=m _{sRS, 0}/ 4 row, have been corresponding in turn to b _hopsRS all in a SRS hop period when=0 sends opportunity; be and b _hopa relevant step-length;

In first sublist and the second sublist, often row all contains 4 nonnegative integer: d ₀, d ₁, d ₂and d ₃; Wherein, d _bspan be 0≤d _b< N _b(b=0,1,2,3), N here _baccording to N _rB ^uL, C _sRSand B _sRSthe positive integer determined.

Terminal storage first matrix, has been corresponding in turn to all possible N in the first matrix _rB ^uLand C _sRSparameter combinations, contains multiple first sublist.

Terminal storage second matrix, has been corresponding in turn to all possible N in the second matrix _rB ^uLand C _sRSparameter combinations, contains multiple second sublist.

For the situation of enable SRS frequency hopping, by P such above-mentioned treatment step altogether in a SRS hop period, SRS frequency hopping pattern can be obtained.

Fig. 7 is the schematic diagram of the terminal of the embodiment of the present invention, and as shown in Figure 7, the terminal of the present embodiment can comprise:

Constructing module, for constructing the first matrix and the second matrix, wherein, the first matrix comprises multiple first sublist, and the second matrix comprises multiple second sublist;

Select module, for according to system uplink bandwidth N _rB ^uLwith the detection reference signal band width configuration parameter C that base station issues _sRS, from described first matrix, select first sublist;

Table look-up module, for the detection reference signal bandwidth parameter B issued according to base station _sRSwith detection reference signal frequency domain position indexing parameter n _rRC, based on the first selected sublist with n _rRCas index, obtain comprising B by tabling look-up _sRSthe sequence { p (i) } of+1 element, wherein, i=0 ..., B _sRS;

Judge module, for judging whether described base station enables detection reference signal frequency hopping;

First determination module, for judging that described base station enables detection reference signal frequency hopping at described judge module, then determine detection reference signal frequency hopping pattern by following:

According to described N _rB ^uLwith described C _sRSsecond sublist is selected from described second matrix;

According to the detection reference signal frequency hopping bandwidth parameter b that described base station issues _hop, in each detection reference signal hop period, send according to detection reference signal and count n opportunity _sRS, based on the second selected sublist, with n ' _sRS=(n _sRSmod P) S as index, obtain comprising B by tabling look-up _sRS-b _hopthe sequence of individual element: { q (j) }, wherein, j=b _hop+ 1 ..., B _sRS, S is and b _hopa relevant step-length, represent b in detection reference signal tree _hopbandwidth corresponding to layer, represent B in detection reference signal tree _sRSbandwidth corresponding to layer,

By described sequence { p (i) }, and described sequence { p (i) } and described sequence { q (j) } are added, and obtain tree the 0th respectively to B _sRSthe mark n of layer _b:

For 0≤b≤b _hop, n _b=p (b),

For b _hop< b≤B _sRS, n _b=(p (b)+q (b)) mod N _b,

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern;

Second determination module, for judging the not enable detection reference signal frequency hopping in described base station at described judge module, then determine detection reference signal frequency hopping pattern by following:

Tree the 0th is obtained to B by described sequence { p (i) } _sRSthe mark n of layer _b:

n _b＝p(b)，b＝0，…，B _SRS

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern.

Wherein, described judge module, specifically for reading the detection reference signal frequency hopping bandwidth parameter b in specialized configuration that described base station issues _hop, then with described B _sRScompare, if b _hop< B _sRS, then judge that described base station enables detection reference signal frequency hopping; If b _hop>=B _sRS, then the not enable SRS frequency hopping in described base station is judged.

Wherein, described first sublist of described structure module construction comprises 24 row, is corresponding in turn to described n _rRCinstitute's likely value; Described second sublist comprises m _{sRS, 0}/ 4 row, have been corresponding in turn to b _hopdetection reference signals all in a detection reference signal hop period when=0 sends opportunity, wherein, and m _{sRS, 0}representing the bandwidth corresponding to SRS tree the 0th layer, is according to described N _rB ^uLwith described C _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.

Visible by above preferred embodiment, the method adopting the embodiment of the present invention to provide and terminal, compared with prior art, reduce by the method for tabling look-up the computation complexity that terminal determines SRS frequency hopping pattern process, can save terminal power or reduce terminal cost.

The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

These are only the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.

Claims (10)

1. determine a method for detection reference signal frequency hopping pattern, comprising:

Terminal constructions first matrix and the second matrix, wherein, the first matrix comprises multiple first sublist, and the second matrix comprises multiple second sublist;

Described terminal is according to system uplink bandwidth N _rB ^uLwith the detection reference signal band width configuration parameter C that base station issues _sRS, from described first matrix, select first sublist;

The detection reference signal bandwidth parameter B that described terminal issues according to described base station _sRSwith detection reference signal frequency domain position indexing parameter n _rRC, based on the first selected sublist with n _rRCas index, obtain comprising B by tabling look-up _sRSthe sequence { p (i) } of+1 element, wherein, i=0 ..., B _sRS;

Described in described terminal judges, whether base station enables detection reference signal frequency hopping, as base station as described in judging enables detection reference signal frequency hopping, then by following steps determination detection reference signal frequency hopping pattern:

According to described N _rB ^uLwith described C _sRSsecond sublist is selected from described second matrix;

According to the detection reference signal frequency hopping bandwidth parameter b that described base station issues _hop, in each detection reference signal hop period, send according to detection reference signal and count n opportunity _sRS, based on the second selected sublist, with n ' _sRS=(n _sRSmod P) S as index, obtain comprising B by tabling look-up _sRS-b _hopthe sequence of individual element: { q (j) }, wherein, j=b _hop+ 1 ..., B _sRS, S is and b _hopa relevant step-length, represent b in detection reference signal tree _hopbandwidth corresponding to layer, represent B in detection reference signal tree _sRSbandwidth corresponding to layer,

By described sequence { p (i) }, and described sequence { p (i) } and described sequence { q (j) } are added, and obtain tree the 0th respectively to B _sRSthe mark n of layer _b:

For 0≤b≤b _hop, n _b=p (b),

For b _hop< b≤B _sRS, n _b=(p (b)+q (b)) mod N _b,

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern;

Described terminal as the not enable detection reference signal frequency hopping in base station as described in judging, then by following steps determination detection reference signal frequency hopping pattern:

Tree the 0th is obtained to B by described sequence { p (i) } _sRSthe mark n of layer _b:

n _b＝p(b)，b＝0，…，B _SRS

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern.

2. method as claimed in claim 1, is characterized in that: described in described terminal judges, whether base station enables detection reference signal frequency hopping, comprising:

Described terminal reads the detection reference signal frequency hopping bandwidth parameter b in the specialized configuration that described base station issues _hop, then with described B _sRScompare, if b _hop< B _sRS, then judge that described base station enables detection reference signal frequency hopping; If b _hop>=B _sRS, then the not enable SRS frequency hopping in described base station is judged.

3. method as claimed in claim 1 or 2, is characterized in that:

Described first sublist comprises 24 row, is corresponding in turn to described n _rRCinstitute's likely value;

Described second sublist comprises m _{sRS, 0}/ 4 row, have been corresponding in turn to b _hopdetection reference signals all in a detection reference signal hop period when=0 sends opportunity, wherein, and m _{sRS, 0}representing the bandwidth corresponding to SRS tree the 0th layer, is according to described N _rB ^uLwith described C _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.

4. method as claimed in claim 1 or 2, is characterized in that:

In described first sublist and described second sublist, often row all contains 4 nonnegative integers.

5. method as claimed in claim 1 or 2, is characterized in that:

All N have been corresponding in turn in described first matrix _rB ^uLand C _sRScombination;

All N have been corresponding in turn in described second matrix _rB ^uLand C _sRScombination.

6. a terminal, is characterized in that, comprising:

Constructing module, for constructing the first matrix and the second matrix, wherein, the first matrix comprises multiple first sublist, and the second matrix comprises multiple second sublist;

Select module, for according to system uplink bandwidth N _rB ^uLwith the detection reference signal band width configuration parameter C that base station issues _sRS, from described first matrix, select first sublist;

Table look-up module, for the detection reference signal bandwidth parameter B issued according to base station _sRSwith detection reference signal frequency domain position indexing parameter n _rRC, based on the first selected sublist with n _rRCas index, obtain comprising B by tabling look-up _sRSthe sequence { p (i) } of+1 element, wherein, i=0 ..., B _sRS;

Judge module, for judging whether described base station enables detection reference signal frequency hopping;

First determination module, for judging that described base station enables detection reference signal frequency hopping at described judge module, then determine detection reference signal frequency hopping pattern by following:

According to described N _rB ^uLwith described C _sRSsecond sublist is selected from described second matrix;

According to the detection reference signal frequency hopping bandwidth parameter b that described base station issues _hop, in each detection reference signal hop period, send according to detection reference signal and count n opportunity _sRS, based on the second selected sublist, with n ' _sRS=(n _sRSmod P) S as index, obtain comprising B by tabling look-up _sRS-b _hopthe sequence of individual element: { q (j) }, wherein, j=b _hop+ 1 ..., B _sRS, S is and b _hopa relevant step-length, represent b in detection reference signal tree _hopbandwidth corresponding to layer, represent B in detection reference signal tree _sRSbandwidth corresponding to layer,

By described sequence { p (i) }, and described sequence { p (i) } and described sequence { q (j) } are added, and obtain tree the 0th respectively to B _sRSthe mark n of layer _b:

For 0≤b≤b _hop, n _b=p (b),

For b _hop< b≤B _sRS, n _b=(p (b)+q (b)) mod N _b,

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern;

Second determination module, for judging the not enable detection reference signal frequency hopping in described base station at described judge module, then determine detection reference signal frequency hopping pattern by following:

Tree the 0th is obtained to B by described sequence { p (i) } _sRSthe mark n of layer _b:

n _b＝p(b)，b＝0，…，B _SRS

Based on described n _bdetermining the frequency domain position of current detection reference signal, by altogether determining the frequency domain position of detection reference signal in a detection reference signal hop period for P time, obtaining detection reference signal frequency hopping pattern.

7. terminal as claimed in claim 6, is characterized in that:

Described judge module, specifically for reading the detection reference signal frequency hopping bandwidth parameter b in specialized configuration that described base station issues _hop, then with described B _sRScompare, if b _hop< B _sRS, then judge that described base station enables detection reference signal frequency hopping; If b _hop>=B _sRS, then the not enable SRS frequency hopping in described base station is judged.

8. terminal as claimed in claims 6 or 7, is characterized in that:

Described first sublist of described structure module construction comprises 24 row, is corresponding in turn to described n _rRCinstitute's likely value; Described second sublist comprises m _{sRS, 0}/ 4 row, have been corresponding in turn to b _hopdetection reference signals all in a detection reference signal hop period when=0 sends opportunity, wherein, and m _{sRS, 0}representing the bandwidth corresponding to SRS tree the 0th layer, is according to described N _rB ^uLwith described C _sRSthe positive integer determined, its value is the multiple of 4 and is maximumly no more than 96.

9. terminal as claimed in claims 6 or 7, is characterized in that:

In described first sublist of described structure module construction and described second sublist, often row all contains 4 nonnegative integers.

10. terminal as claimed in claims 6 or 7, is characterized in that:

All N have been corresponding in turn in described first matrix of described structure module construction _rB ^uLand C _sRScombination; All N have been corresponding in turn in described second matrix _rB ^uLand C _sRScombination.