CN103634891A - Signal transmission method and user terminal - Google Patents

Signal transmission method and user terminal Download PDF

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Publication number
CN103634891A
CN103634891A CN201210310348.1A CN201210310348A CN103634891A CN 103634891 A CN103634891 A CN 103634891A CN 201210310348 A CN201210310348 A CN 201210310348A CN 103634891 A CN103634891 A CN 103634891A
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CN
China
Prior art keywords
described
power
rollback amount
signal transmission
benchmark
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CN201210310348.1A
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Chinese (zh)
Inventor
吴茜
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华为技术有限公司
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Priority to CN201210310348.1A priority Critical patent/CN103634891A/en
Publication of CN103634891A publication Critical patent/CN103634891A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365Power headroom reporting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/50TPC being performed in particular situations at the moment of starting communication in a multiple access environment

Abstract

The embodiment of the invention discloses a signal transmission method and a user terminal and belongs to the technical field of communication. When the user terminal transmits signals on a discontinuous uplink resource block, maximum power reduction quantity corresponding to the intermodulation product of each order in a frequency interval of radio frequency indexes is determined; a maximum value in the determined maximum power reduction quantity is adopted as benchmark reduction quantity of power; and actual transmitted power spectral density is adjusted according to the benchmark reduction quantity, and the signals are transmitted. With the signal transmission method of the invention adopted, the size of the intermodulation product can be decreased, such that the radio frequency indexes on an uplink channel can satisfy requirements; when the maximum power reduction quantity is determined, requirements of the radio frequency indexes in corresponding frequency bands are considered, and therefore, appropriate maximum power reduction quantity can be determined, and the determined maximum power reduction quantity is optimized.

Description

A kind of method for transmitting signals and user terminal

Technical field

The present invention relates to communication technical field, particularly method for transmitting signals and user terminal.

Background technology

In mobile communication system, in the ascending resource that network equipment distributes to user terminal, allow to carry out Physical Shared Channel (Physical Uplink Shared Channel in discrete resource, PUSCH) transmission of information, PUSCH and ascending physical signal control channel (Physical Uplink Control Channel, PUCCH) introducing of the simultaneous interpretation of information and up-link carrier polymerization technique, make can have two and above resource bunch transmission simultaneously on a radio frequency link, each resource bunch can comprise at least one Resource Block (Resource block, RB).

In actual application, non-linear due to transmitter radio-frequency channel, this a plurality of resource bunch can produce intermodulation product while transmitting simultaneously, the position of resource bunch in system bandwidth and vary in size and can produce intermodulation product at diverse location, thereby different radio-frequency (RF) index is exerted an influence, such as neighboring trace rejection ratio (Adjacent Channel Leakage Ratio, ACLR), stray radiation template (Spurious Emission Mask, SEM) parameter or stray radiation (Spurious emission, SE) etc., these radio-frequency (RF) index cannot be met the demands.

In prior art, for radio-frequency (RF) index can be met the demands, just need to carry out back-off, make the radio-frequency power amplifier on user terminal enter linear work district, thereby reduced the size of intermodulation product, radio-frequency (RF) index can be met the demands, but determine maximum power rollback (Maximum Power Reduction according to existing method, MPR) after amount, in some cases, such as being separated by between two resources bunch in the situation such as nearer, can cause too much unnecessary back-off amount, sacrificed system gain.

Summary of the invention

The embodiment of the present invention provides a kind of method for transmitting signals and user terminal, the maximum power rollback amount of having used while having optimized the back-off carrying out in order to reduce intermodulation product size.

The first aspect of the embodiment of the present invention, provides a kind of method for transmitting signals, comprising:

Determine the maximum power rollback MPR amount corresponding to interior each rank intermodulation product of frequency separation of radio-frequency (RF) index;

Benchmark rollback amount using the maximum in described maximum power rollback amount as power, and according to the benchmark rollback amount of described power, adjust actual emission power spectrum density and carry out signal transmission.

In the possible implementation of the first of first aspect, before carrying out signal transmission according to the benchmark rollback amount adjustment actual emission power spectrum density of described power, also comprise: calculate the average power spectrum density of user terminal signal transmission in described a plurality of discrete resources bunch, and the relative mistake of computing system maximum power spectral densities and described average power spectrum density;

The described adjustment of the benchmark rollback amount according to described power actual emission power spectrum density comes signal transmission specifically to comprise: the actual maximum power rollback amount using the difference of the benchmark rollback amount of described power and described relative mistake as described user terminal, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

The first implementation in conjunction with first aspect, in the second implementation of first aspect, before carrying out signal transmission according to the benchmark rollback amount adjustment actual emission power spectrum density of described power, also comprise: when having the intermodulation product stack of a plurality of identical exponent numbers on a position, determine the stack power of a plurality of intermodulation products of identical exponent number on a described position;

The described benchmark rollback amount according to described power is adjusted actual emission power spectrum density and is come signal transmission specifically to comprise: the benchmark rollback amount of described power is deducted to value that the difference of described relative mistake and described stack power obtains as actual maximum power rollback amount, and carry out signal transmission according to described actual maximum power rollback amount adjustment actual emission power spectrum density.

The second implementation in conjunction with first aspect, in the third implementation of first aspect, when having respectively the intermodulation product stack of a plurality of identical exponent numbers on a plurality of positions, determine respectively the stack power of a plurality of intermodulation products of identical exponent number on described each position, and select the maximum of the corresponding stack in described each position power;

The described benchmark rollback amount signal transmission according to described power specifically comprises: the benchmark rollback amount of described power is deducted to value that the difference of described relative mistake and described stack power maximum obtains as actual maximum power rollback amount, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

The second aspect of the embodiment of the present invention, provides a kind of user terminal, comprising:

Rollback amount determining unit, for the maximum power rollback MPR amount that in the frequency separation of definite radio-frequency (RF) index, each rank intermodulation product is corresponding;

Benchmark determining unit, the benchmark rollback amount for the maximum of described maximum power rollback amount that described rollback amount determining unit is determined as power;

Signal transmission unit, carrys out signal transmission for adjusting actual emission power spectrum density according to the benchmark rollback amount of the definite power of described benchmark determining unit.

In the possible implementation of the first of second aspect, user terminal, also comprises:

Relative mistake computing unit, for calculating the average power spectrum density of user terminal signal transmission in described a plurality of discrete resources bunch, and the relative mistake of computing system maximum power spectral densities and described average power spectrum density;

Described signal transmission unit, also for described benchmark determining unit being determined to the difference of the relative mistake that the benchmark rollback amount of power and described relative mistake computing unit calculate is as the actual maximum power rollback amount of described user terminal, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

In conjunction with the first implementation of second aspect, in the possible implementation of the second of second aspect, user terminal also comprises:

Stack power determining unit, for when having the intermodulation product stack of a plurality of identical exponent numbers on a position, determines the stack power of a plurality of intermodulation products of identical exponent number on a described position;

Described signal transmission unit, also for the benchmark rollback amount of the definite power of described benchmark determining unit being deducted to value that the difference of described relative mistake and described stack power obtains as actual maximum power rollback amount, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

The second implementation in conjunction with second aspect, in the third possible implementation of second aspect, described stack power determining unit, also for when having respectively the intermodulation product stack of a plurality of identical exponent numbers on a plurality of positions, determine respectively the stack power of a plurality of intermodulation products of identical exponent number on described each position, and select the maximum of the corresponding stack in described each position power;

Described signal transmission unit, also for the benchmark rollback amount of the definite power of described benchmark determining unit being deducted to value that the difference of described relative mistake and described stack power maximum obtains as actual maximum power rollback amount, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

Visible, in embodiments of the present invention, user terminal is in up channel on discrete Resource Block during signal transmission, need to first determine the interior maximum power rollback amount corresponding to each rank intermodulation product of frequency separation of radio-frequency (RF) index, benchmark rollback amount using the maximum in definite maximum power rollback amount as power, and according to benchmark rollback amount, adjust actual emission power spectrum density and carry out signal transmission.User terminal, by the method signal transmission of back-off, has reduced the size of the intermodulation product of generation, thereby the radio-frequency (RF) index on up channel is met the demands like this; And in this enforcement, when determining maximum power rollback amount, consider the requirement of radio-frequency (RF) index in corresponding frequency range, can determine so comparatively suitable maximum power rollback amount, optimized definite maximum power rollback amount.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is a kind of method for transmitting signals flow chart that the embodiment of the present invention provides;

Fig. 2 is in the situation that the channel width of user terminal is 10MHz, each radio-frequency (RF) index and each frequency separation be related to schematic diagram;

Fig. 3 is the another kind of method for transmitting signals flow chart that the embodiment of the present invention provides;

Fig. 4 is the comparison schematic diagram that user terminal passes through maximum power spectral densities signal transmission and the intermodulation product that produces by average power spectrum density signal transmission;

Fig. 5 is the another kind of method for transmitting signals flow chart that the embodiment of the present invention provides;

Fig. 6 is the structural representation of a kind of user terminal of providing of the embodiment of the present invention;

Fig. 7 is the structural representation of the another kind of user terminal that provides of the embodiment of the present invention;

Fig. 8 is the structural representation of the another kind of user terminal that provides of the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention provides a kind of method for transmitting signals, the method for the signal transmission that is mainly user terminal on discrete ascending resource bunch, and flow chart as shown in Figure 1, comprising:

Step 101, determines maximum power rollback amount corresponding to each rank (each exponent number) intermodulation product in frequency separation corresponding to radio-frequency (RF) index.Wherein Resource Block is the minimum transmission units of transfer resource, and at least one continuous Resource Block can form a resource bunch.

Be appreciated that, when user terminal is in any two resources of upstream discontinuous bunch during signal transmission, can produce intermodulation product, in order to reduce intermodulation product, need to carry out back-off, reduce the transmitting power of user terminal, simultaneously during the power delivery signal after user terminal is according to rollback, need to make radio-frequency (RF) index to meet the demands, the value that is mainly radio-frequency (RF) index need to be in certain scope, the value requiring under different situations due to each radio-frequency (RF) index is different, its specific requirement depends primarily on channel width (the Channel Bandwidth of user terminal, CBW), the factors such as signaling that coexist that frequency range and network issue, such as at CBW mono-regularly, the maximum power that SE requires in some frequency range is the first preset power, and the desired maximum power of SEM is the second preset power etc. in other frequency ranges.Like this for the residing current network of user terminal, its CBW is certain, just need user terminal first to determine in which frequency range to consider which radio-frequency (RF) index, it is the corresponding relation of frequency separation and radio-frequency (RF) index, could determine the requirement of each radio-frequency (RF) index, thereby determine suitable maximum power rollback (Maximum Power Reduction, MPR) amount for the requirement of different radio frequency index.Wherein this corresponding relation can be to be preset at user terminal, when user terminal is triggered while carrying out back-off, can from the memory space of user terminal, take out this corresponding relation.

For example Figure 2 shows that wherein highest frequency (is designated as f in the situation that the upstream channel bandwidth of user terminal is 10MHz high) be 5MHz, low-limit frequency (is designated as f low) be-during 5MHz, each radio-frequency (RF) index and each frequency separation be related to schematic diagram, wherein abscissa is frequency, unit is megahertz (MHz); If radio-frequency (RF) index is SEM or SE, ordinate is power spectral density (the Power Spectral density of user terminal signal transmission, PSD), unit is decibel millivolt (dBm)/MHz, if radio-frequency (RF) index is ACLR, the ratio of the signal power that ordinate is adjacent channel and the signal power of main channel, the corresponding relation of radio-frequency (RF) index and frequency separation is as shown in table 1 below:

The corresponding relation of table 1 radio-frequency (RF) index and frequency separation

It should be noted that, in above-mentioned table 1, ACLR1 and ACLR2 are the ACLR values under two kinds of different situations; SEM1 is desired be-10dBm/MHz of maximum PSD when CBW is greater than 5MHz, and SEM2 is desired be-13dBm/MHz of maximum PSD when CBW is greater than 5MHz, and SEM3 is desired be-25dBm/MHz of maximum PSD when CBW is greater than 5MHz; SE1 is desired be-30dBm/MHz of maximum PSD when CBW is greater than 1GHz, and SE2 is desired be-36dBm/MHz of maximum PSD when CBW is less than 1GHz.

In above-mentioned table 1, just for the corresponding relation of frequency separation and radio-frequency (RF) index is described, the data that wherein provide are a concrete example, can have in other cases different corresponding relation data.

User terminal is after having determined frequency separation corresponding to radio-frequency (RF) index, when definite maximum power rollback amount, to determine through a large amount of experiments, but in the process of experiment, user specifically can pass through the adjustment to this user terminal transmit power spectral density on two discrete Resource Block, the intermodulation product size producing while changing signal transmission, and then constantly adjust transmit power spectral density by the difference of the size of the intermodulation product desired thresholding of radio-frequency (RF) index corresponding with the residing frequency separation of intermodulation product, while producing intermodulation product while making user terminal finally carry out signal transmission according to the some maximum power rollback amount adjustment actual emission power spectrum densities that obtain, a certain radio-frequency (RF) index can meet the demands in corresponding frequency separation.Wherein in the different frequency range of each radio-frequency (RF) index under different CBW, desired maximum can be to be preset in user terminal, and consider the practical application of user terminal, in order to save the memory space of user terminal, the desired maximum of some frequency range under can preset specific CBW, and the requirement of radio-frequency (RF) index under can the CBW of preset all situations.

When user terminal is on every two discrete Resource Block during signal transmission, the frequency component that capital regeneration makes new advances is intermodulation product, by means such as emulation or tests, determine the maximum power rollback amount that in frequency separation corresponding to radio-frequency (RF) index, each rank intermodulation product is corresponding, be designated as MPR i, j, i represents the numbering of the radio-frequency (RF) index that needs are considered, j represents the exponent number of intermodulation, represents user terminal rollback MPR when transmitting i, jafter, radio-frequency (RF) index i corresponding in j rank intermodulation product frequency separation of living in can meet the demands.

Maximum power rollback amount corresponding to 3,5 and 7 rank intermodulation products that example is as shown in table 2 below, visible, for some radio-frequency (RF) index such as SEM3, when arbitrarily the intermodulation product of single order appears in frequency separation corresponding to this radio-frequency (RF) index, this radio-frequency (RF) index does not meet the demands, and need to carry out back-off.

The maximum power rollback amount that each rank intermodulation product of table 1 is corresponding

Step 102, the user terminal maximum power rollback amount that each rank intermodulation product is corresponding in the frequency separation of definite radio-frequency (RF) index is that the maximum of maximum power rollback amount definite in above-mentioned steps 101 is as the benchmark rollback amount of power.

By step 101, can obtain maximum power rollback amount corresponding at least one radio-frequency (RF) index, and as benchmark rollback amount, be MPR=Max (MPR using maximum wherein i, j).

Step 103, user terminal is adjusted actual emission power spectrum density according to the benchmark rollback amount of power and is carried out signal transmission.

User terminal can deduct above-mentioned benchmark rollback and measure actual emission power spectrum density on the basis of current transmit power spectral density, and carrys out signal transmission according to actual emission power spectrum density.

Visible, in embodiments of the present invention, user terminal is in up channel on discrete Resource Block during signal transmission, need to first determine the maximum power rollback amount that each rank intermodulation product is corresponding in the frequency separation of radio-frequency (RF) index, benchmark rollback amount using the maximum in definite maximum power rollback amount as power, and according to benchmark rollback amount, adjust actual emission power spectrum density and carry out signal transmission.User terminal, by the method signal transmission of back-off, has reduced the size of the intermodulation product of generation, thereby the radio-frequency (RF) index on up channel can be met the demands like this; And in this enforcement, when determining maximum power rollback amount, consider the requirement of radio-frequency (RF) index in corresponding frequency range, can determine so comparatively suitable maximum power rollback amount, optimized definite maximum power rollback amount.

It should be noted that, user terminal can be by above-mentioned steps 101 to step 102, benchmark rollback amount on two discrete Resource Block signal transmission in the situation that, this benchmark rollback amount is maximum maximum power rollback amount, and in real system, when the number of resource bunch increases or when the RB of each bunch increases, PSD will reduce, the intermodulation size that little PSD produces also can diminish, in order to make definite maximum power rollback amount more suitable, in a specific embodiment shown in figure 3, before carrying out above-mentioned steps 103, user terminal also needs to perform step 104, the average power spectrum density of calculating user terminal reality signal transmission in a plurality of discrete resources bunch (is designated as PSD average), and the relative mistake Δ PSD1=PSD of computing system maximum power spectral densities and average power spectrum density max-PSD average, when determining actual maximum power rollback amount, need to consider this relative mistake,, when carrying out above-mentioned steps 103, user terminal need to be MPR1=Max (MPR by the difference of the relative mistake calculating in the benchmark rollback amount of power definite in step 102 and step 104 i, j)-Δ PSD1 is as the actual maximum power rollback amount of user terminal, and determines that according to actual maximum power rollback amount actual emission power spectrum density carrys out signal transmission.

Example as shown in Figure 4, wherein abscissa represents frequency, ordinate represents that power spectral density is PSD, if only include respectively a Resource Block in two discrete resources of up channel bunch, be Resource Block 1 and 50 (part that Fig. 4 bend is filled), and user terminal is by maximum power spectral densities signal transmission, the intermodulation product forming is that IMD (RB1, RB50) (part that Fig. 4 bend is filled) is maximum.

Increase along with resource bunch upper Resource Block, in resource bunch, comprise Resource Block 1 and 2, in another resource bunch, comprise Resource Block 50 and 51, consider the actual power spectrum density of user terminal reality signal transmission on Resource Block, can produce like this 4 intermodulation products (IMD) is Resource Block 1 and 2, the intermodulation product forming respectively and between Resource Block 50 and 51, be specially: IMD (RB1, RB50), IMD (RB1, RB51), IMD (RB2, RB50) and IMD (RB2, RB51), visible, when if in user terminal reality, the average power spectrum density of signal transmission and maximum power spectral densities differ Δ PSD1, the size of the intermodulation product that produced in this case also has certain difference.

Further, further increase along with resource bunch number and each resource bunch upper RB, owing to all can producing intermodulation product between every two discrete Resource Block, on same position, may produce a plurality of intermodulation products, a plurality of like this intermodulation product stacks, need larger maximum power rollback amount just can make each radio-frequency (RF) index all meet the demands, wherein, low order is (such as 3, 5 and 7 rank) intermodulation product is larger than the impact of the intermodulation product of high-order on the impact of signal quality, therefore can only pay close attention to the number of the low order intermodulation product superposeing on same position, and ignore the intermodulation product of high-order.

With reference to the concrete signal of shown in figure 5, transmit in embodiment, when determining actual maximum power rollback amount, if consider a plurality of intermodulation products that form on a position, for example at the intermodulation product place on 3 rank, there is the intermodulation product on a plurality of 3 rank mutually to superpose, user terminal also needs to perform step 105, determine the stack power of a plurality of intermodulation products of identical exponent number on a position, be specifically as follows P = ceil ( 10 * log 10 ( N inter - mod ) N order ) Be more than or equal to 10 * log 10 ( N inter - mod ) N order Smallest positive integral, wherein, N inter-modbe the number of the intermodulation product of identical exponent number on a position, N orderexponent number for intermodulation product.

When carrying out above-mentioned steps 103, the resulting value of difference that user terminal can deduct the benchmark rollback amount of power definite in step 102 stack power definite in the relative mistake that calculates in step 104 and step 105 is MPR 2 = Max ( MPR i , j ) - [ ΔPSD 1 - ceil ( 10 * log 10 ( N inter - mod ) N order ) ] As actual maximum power rollback amount, and according to actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission, on the basis of transmit power spectral density, deduct actual maximum power rollback and measure actual power spectrum density, and carry out signal transmission according to actual power spectrum density.

At user terminal, carry out after above-mentioned steps 104 and 105, in the process of execution step 103, above-mentioned relative mistake with the difference of stack power is ΔPSD 2 = ΔPSD 1 - ceil ( 10 * log 10 ( N inter - mod ) N order ) Negative value may be there is, when definite maximum power rollback amount, the Δ PSD2 of calculating and 0 maximum need to be got: ΔPSD 2 = Max ( 0 , ΔPSD 1 - ceil ( 10 * log 10 ( N inter - mod ) N order ) ) ; And the value that in step 102, the benchmark rollback amount of definite power deducts above-mentioned relative difference and the difference Δ PSD2 of the power that superposes obtains can be also negative value, also needs by following calculating MPR2=Max (0, Max (MPR i, j)-Δ PSD2) determine actual maximum power rollback amount.

If consider a plurality of intermodulation products that form respectively on a plurality of positions, for example, at the intermodulation product place on 3 rank, there is the intermodulation product on 33 rank, at the intermodulation product place on 5 rank, have the intermodulation product on 55 rank, when definite maximum power rollback amount, user terminal is performing step at 105 o'clock, need to determine respectively stack power P i (i=1,2 of a plurality of intermodulation products of identical exponent number on each position, ..., N, the quantity that N is position), and select the maximum P in each locational stack power imax, wherein when determining each locational stack power P i, can pass through above-mentioned formula determine; When carrying out above-mentioned steps 103, it is MPR2=Max (MPR that user terminal can deduct the benchmark rollback amount of power definite in step 102 value that the difference of stack power maximum definite in the relative mistake that calculates in step 104 and step 105 obtains i, j)-(Δ PSD1-P imax) as actual maximum power rollback amount, and according to actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission, on the basis of transmit power spectral density, deduct actual maximum power rollback and measure actual power spectrum density, and carry out signal transmission according to actual power spectrum density.

It should be noted that, user terminal, carrying out above-mentioned steps 104 and at 105 o'clock, can be carried out also simultaneously and can carry out by pagination, and wherein a kind of possible realization order is only shown in Fig. 5; And between above-mentioned steps 101 to 102 and step 104, there is no absolute ordinal relation yet, can carry out simultaneously yet and can sequentially carry out, a kind of possible implementation method is also only shown in Fig. 3; And there is no absolute ordinal relation between above-mentioned steps 101 to 102 and step 105 yet.

The embodiment of the present invention also provides a kind of user terminal, and this user terminal is supported discrete up channel, and structural representation Fig. 6 as shown, comprising:

Rollback amount determining unit 11, for the maximum power rollback MPR amount that in the frequency separation of definite radio-frequency (RF) index, each rank intermodulation product is corresponding.Particularly, rollback amount determining unit 11 can first be obtained frequency separation corresponding to radio-frequency (RF) index, specifically can be as shown in Table 1, and then obtain maximum power rollback amount by a large amount of experiments, the size of the multistage intermodulation product that can produce during signal transmission on two discrete Resource Block according to user terminal in this process, the difference of the radio-frequency (RF) index desired thresholding corresponding with the residing frequency separation of intermodulation product is Modulating Power rollback amount constantly, while producing intermodulation product while making user terminal some maximum power rollback amount signal transmissions that finally basis obtains, a certain radio-frequency (RF) index can meet the demands in corresponding frequency separation.

Benchmark determining unit 12, the benchmark rollback amount for the maximum of described maximum power rollback amount that described rollback amount determining unit 11 is determined as power.

Rollback amount determining unit 11 can be determined a plurality of maximum power rollback amounts, specifically can at this, not repeat as shown in Table 2 above, and the benchmark rollback amount of the definite power of benchmark determining unit 12 is the maximum of a plurality of maximum power rollback amounts.

Signal transmission unit 13, for adjusting actual emission power spectrum density according to the benchmark rollback amount of the definite power of described benchmark determining unit 12, carry out signal transmission, particularly, signal transmission unit 13 can deduct above-mentioned benchmark rollback and measure actual emission power spectrum density on the basis of current transmit power spectral density, and carrys out signal transmission according to actual emission power spectrum density.

In the user terminal of the embodiment of the present invention, on discrete up channel during signal transmission, need to be by maximum power rollback amount corresponding to each rank intermodulation product in the frequency separation of rollback amount determining unit 11 definite radio-frequency (RF) index, the benchmark rollback amount of benchmark determining unit 12 using the maximum in definite maximum power rollback amount as power, and carry out signal transmission by signal transmission unit 13.User terminal, by the method signal transmission of back-off, has reduced the size of the intermodulation product of generation, thereby the radio-frequency (RF) index on up channel is met the demands like this; And in this enforcement, when determining maximum power rollback amount, consider the requirement of radio-frequency (RF) index in corresponding frequency range, can determine so comparatively suitable maximum power rollback amount, optimized definite maximum power rollback amount.

Shown in figure 7, in a specific embodiment, user terminal, except comprising as the structure of Fig. 6, can also comprise: relative mistake computing unit 14 and stack power determining unit 15, particularly:

Relative mistake computing unit 14, for calculating the average power spectrum density of user terminal signal transmission in described a plurality of resources bunch, and the relative mistake of computing system maximum power spectral densities and described average power spectrum density.

Stack power determining unit 15, for when having the intermodulation product stack of a plurality of identical exponent numbers on a position, determines the stack power of a plurality of intermodulation products of identical exponent number on a described position, and the power that for example superposes is: wherein said N orderfor the exponent number of intermodulation product, described N inter-modnumber for the intermodulation product of identical exponent number on a described position.

In the user terminal of the present embodiment, when signal transmission unit 13 also needs to consider user terminal actual transmission signal, increase along with discrete Resource Block, the PSD of user terminal reality will reduce, the intermodulation size that little PSD produces also can diminish, in order to make definite maximum power rollback amount more suitable, the relative mistake that needs the average power spectrum density of relative mistake computing unit 14 computing system maximum power spectral densities and user terminal actual transmission signal, signal transmission unit 13 can be determined described benchmark determining unit 12 that the benchmark rollback amount of power and the difference of described relative mistake are as the actual maximum power rollback amount of described user terminal, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

Further, user terminal is when determining actual maximum power rollback amount, need to consider the stack of the intermodulation product of a plurality of identical exponent numbers at least one position, if only consider the stack of the intermodulation product of a plurality of identical exponent numbers on a position, the power determining unit that superposes 15 need to be determined the stack power of this position, the resulting value of difference that the benchmark rollback amount of the definite power of described benchmark determining unit 12 is deducted to described relative mistake and described stack power by signal transmission unit 13 is as actual maximum power rollback amount, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission, if while needing to consider to have respectively the intermodulation product stack of a plurality of identical exponent numbers at least two positions, 15 stack power of determining respectively a plurality of intermodulation products of identical exponent number on each position of the power determining unit that superposes, and select the maximum of the corresponding stack in each position power, signal transmission unit 13 times deducts value that the difference of described relative mistake and described stack power maximum obtains as actual maximum power rollback amount using the benchmark rollback amount of the definite power of benchmark determining unit 12, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

The embodiment of the present invention also provides another kind of user terminal, and its structural representation as shown in Figure 8, comprises the memory 20, processor 21, input unit 23 and the output device 24 that are connected respectively in bus, wherein:

In memory 20, be used for storing the data from input unit 23 inputs, and can also store the information such as necessary file of processor 21 deal with data;

Input unit 23 is that user terminal arranges the port of communicating by letter with other with output device 24;

In the present embodiment, processor 21 can be carried out following step: determine maximum power rollback amount corresponding to each rank intermodulation product in the frequency separation of each radio-frequency (RF) index, the intermodulation product that specifically can produce during signal transmission on two discrete Resource Block according to output device 24 is determined maximum power rollback amount; Benchmark rollback amount using the maximum in described maximum power rollback amount as power; Output device 24 obtains to processor 21 after the benchmark rollback amount of power, adjusts actual emission power spectrum density carry out signal transmission according to the benchmark rollback amount of described power.

Further, processor 21 can also calculate the average power spectrum density of user terminal signal transmission in described a plurality of discrete resources bunch, and the relative mistake of computing system maximum power spectral densities and described average power spectrum density, and the actual maximum power rollback amount using the difference of the relative mistake of the benchmark rollback amount of power and the calculating of described relative mistake computing unit as described user terminal, output device 24 can obtain actual maximum power rollback amount to processor 21 like this, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

Further, when having the intermodulation product stack of a plurality of identical exponent numbers on a position, processor 21 can also be determined the stack power of a plurality of intermodulation products of identical exponent number on a described position, and the benchmark rollback amount of described power is deducted to value that the difference of described relative mistake and described stack power obtains as actual maximum power rollback amount, output device 24 can obtain actual maximum power rollback amount to processor 21 like this, and according to described actual maximum power rollback amount, adjusts actual emission power spectrum density and carry out signal transmission, when having respectively the intermodulation product stack of a plurality of identical exponent numbers on a plurality of positions, processor 21 can be determined respectively the stack power of a plurality of intermodulation products of identical exponent number on described each position, and the maximum of the selection corresponding stack in described each position power, and the benchmark rollback amount of the definite power of described benchmark determining unit is deducted to value that the difference of described relative mistake and described stack power maximum obtains as actual maximum power rollback amount, output device 24 can obtain actual maximum power rollback amount to processor 21 like this, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.

Particularly, during the stack power of processor 21 a plurality of intermodulation products of identical exponent number on determining a position, can calculate according to following formula, the power that superposes is: wherein said N orderfor the exponent number of intermodulation product, described N inter-modnumber for the intermodulation product of identical exponent number on this position.

One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the hardware that instruction is relevant to complete by program, this program can be stored in a computer-readable recording medium, and storage medium can comprise: read-only memory (ROM), random access memory (RAM), disk or CD etc.

The method for transmitting signals above embodiment of the present invention being provided and user terminal, be described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.

Claims (10)

1. a method for transmitting signals, is characterized in that, comprising:
Determine the maximum power rollback MPR amount corresponding to interior each rank intermodulation product of frequency separation of radio-frequency (RF) index;
Benchmark rollback amount using the maximum in described maximum power rollback amount as power, and according to the benchmark rollback amount of described power, adjust actual emission power spectrum density and carry out signal transmission.
2. the method for claim 1, is characterized in that, described interior maximum power rollback amount corresponding to each rank intermodulation product of frequency separation of determining described radio-frequency (RF) index, specifically comprises:
The size of the multistage intermodulation product producing during signal transmission on two discrete Resource Block according to described user terminal, the difference of the radio-frequency (RF) index desired thresholding corresponding with the residing frequency separation of described intermodulation product, determines maximum power rollback amount corresponding to each rank intermodulation product in the frequency separation of described radio-frequency (RF) index.
3. method as claimed in claim 1 or 2, is characterized in that, the described adjustment of the benchmark rollback amount according to described power actual emission power spectrum density also comprises before carrying out signal transmission:
Calculate the average power spectrum density of user terminal signal transmission in described a plurality of discrete resources bunch, and the relative mistake of computing system maximum power spectral densities and described average power spectrum density;
The described adjustment of the benchmark rollback amount according to described power actual emission power spectrum density comes signal transmission specifically to comprise:
Actual maximum power rollback amount using the difference of the benchmark rollback amount of described power and described relative mistake as described user terminal, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.
4. method as claimed in claim 3, is characterized in that, the described adjustment of the benchmark rollback amount according to described power actual emission power spectrum density also comprises before carrying out signal transmission:
When having the intermodulation product stack of a plurality of identical exponent numbers on a position, determine the stack power of a plurality of intermodulation products of identical exponent number on a described position;
The described benchmark rollback amount according to described power is adjusted actual emission power spectrum density and is come signal transmission specifically to comprise: the benchmark rollback amount of described power is deducted to value that the difference of described relative mistake and described stack power obtains as actual maximum power rollback amount, and carry out signal transmission according to described actual maximum power rollback amount adjustment actual emission power spectrum density.
5. method as claimed in claim 4, is characterized in that, described stack power is: wherein said N orderfor the exponent number of intermodulation product, described N inter-modnumber for the intermodulation product of identical exponent number on a described position.
6. method as claimed in claim 4, it is characterized in that, when having respectively the intermodulation product stack of a plurality of identical exponent numbers on a plurality of positions, determine respectively the stack power of a plurality of intermodulation products of identical exponent number on described each position, and select the maximum of the corresponding stack in described each position power;
The described benchmark rollback amount according to described power is adjusted actual emission power spectrum density and is come signal transmission specifically to comprise: the resulting value of difference that the benchmark rollback amount of described power is deducted to described relative mistake and described stack power maximum is as actual maximum power rollback amount, and carrys out signal transmission according to described actual maximum power rollback amount adjustment actual emission power spectrum density.
7. a user terminal, is characterized in that, comprising:
Rollback amount determining unit, for the maximum power rollback MPR amount that in the frequency separation of definite radio-frequency (RF) index, each rank intermodulation product is corresponding;
Benchmark determining unit, the benchmark rollback amount for the maximum of described maximum power rollback amount that described rollback amount determining unit is determined as power;
Signal transmission unit, carrys out signal transmission for adjusting actual emission power spectrum density according to the benchmark rollback amount of the definite power of described benchmark determining unit.
8. user terminal as claimed in claim 7, is characterized in that, also comprises:
Relative mistake computing unit, for calculating the average power spectrum density of user terminal signal transmission in described a plurality of discrete resources bunch, and the relative mistake of computing system maximum power spectral densities and described average power spectrum density;
Described signal transmission unit, also for described benchmark determining unit being determined to the difference of the relative mistake that the benchmark rollback amount of power and described relative mistake computing unit calculate is as the actual maximum power rollback amount of described user terminal, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.
9. user terminal as claimed in claim 8, is characterized in that, also comprises:
Stack power determining unit, for when having the intermodulation product stack of a plurality of identical exponent numbers on a position, determines the stack power of a plurality of intermodulation products of identical exponent number on a described position;
Described signal transmission unit, also for the benchmark rollback amount of the definite power of described benchmark determining unit being deducted to value that the difference of described relative mistake and described stack power obtains as actual maximum power rollback amount, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.
10. user terminal as claimed in claim 9, is characterized in that, also comprises:
Described stack power determining unit, also for when having respectively the intermodulation product stack of a plurality of identical exponent numbers on a plurality of positions, determine respectively the stack power of a plurality of intermodulation products of identical exponent number on described each position, and select the maximum of the corresponding stack in described each position power;
Described signal transmission unit, also for the resulting value of difference that the benchmark rollback amount of the definite power of described benchmark determining unit is deducted to described relative mistake and described stack power maximum as actual maximum power rollback amount, and according to described actual maximum power rollback amount, adjust actual emission power spectrum density and carry out signal transmission.
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WO2016106655A1 (en) * 2014-12-31 2016-07-07 华为技术有限公司 Data transmission method, apparatus and device
WO2017121125A1 (en) * 2016-01-14 2017-07-20 中兴通讯股份有限公司 Link calibration method and apparatus, and radio-frequency feed-in system

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US7317748B2 (en) * 2003-02-25 2008-01-08 Matsushita Electric Industrial Co., Ltd. Methods and apparatus for transmitting and receiving randomly inverted wideband signals
CN101711058B (en) * 2009-12-15 2012-12-05 中兴通讯股份有限公司 Resource allocation method and resource allocation system
CN102469566B (en) * 2010-11-12 2014-06-11 中兴通讯股份有限公司 Radio resource allocation method and device
CN102075951B (en) * 2011-01-19 2012-12-26 大唐移动通信设备有限公司 Method and device for adjusting distribution positions of frequency-domain resources

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WO2016106655A1 (en) * 2014-12-31 2016-07-07 华为技术有限公司 Data transmission method, apparatus and device
CN107006059A (en) * 2014-12-31 2017-08-01 华为技术有限公司 A kind of data transmission method, device and equipment
US10484944B2 (en) 2014-12-31 2019-11-19 Huawei Technologies Co., Ltd. Data transmission method, apparatus, and device
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WO2017121125A1 (en) * 2016-01-14 2017-07-20 中兴通讯股份有限公司 Link calibration method and apparatus, and radio-frequency feed-in system

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Application publication date: 20140312