CN102006603A

CN102006603A - Transmission power obtaining method and channel quality/interference intensity measuring method and system

Info

Publication number: CN102006603A
Application number: CN2009101717311A
Authority: CN
Inventors: 刘锟; 鲁照华; 朱登魁; 刘向宇; 刘颖; 方惠英
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-08-28
Filing date: 2009-08-28
Publication date: 2011-04-06
Anticipated expiration: 2029-08-28
Also published as: JP2013503521A; CN102006603B; WO2011023033A1

Abstract

The invention discloses a transmission power obtaining method and a channel quality/interference intensity measuring method and system. The channel quality measuring method is used for measuring the channel quality information in a wireless communication system and comprises the following specific steps: a base station sends a reference signal on a frequency zone through a downlink channel so that a terminal measures the channel quality information of the frequency zone through the reference signal. In the invention, the base station can send the reference signal on each frequency zone through the downlink channel according to the transmission power of each frequency zone so that the terminal measures the channel quality information of each frequency zone through the reference signal and the accuracy of the channel quality information measured by the terminal is improved.

Description

Transmitting power acquisition methods, channel quality/interference strength method of measurement and system

Technical field

The present invention relates to the mobile communication technology field, relate in particular to a kind of transmitting power acquisition methods, channel quality/interference strength method of measurement and system.

Background technology

In wireless communication system, the base station is meant the equipment that service is provided for terminal, and the base station communicates by Uplink/Downlink and terminal, and descending or forward direction is meant that the base station arrives the direction of terminal, and is up or oppositely be meant the direction of terminal to base station.A plurality of terminals can send data by up link to the base station simultaneously, also can receive data simultaneously from the base station by down link.

In the data transmission system that adopts base station scheduling control, the scheduling of all resources of system distributes to be undertaken by the base station usually, for example, the resource situation that can use when resource allocation conditions when downlink transfer is carried out in the base station and terminal are carried out uplink etc., these are all distributed by base station scheduling.

At OFDM (Orthogonal Frequency Division Multiplexing, abbreviate OFDM as) in the system, when base station and different terminals carry out downlink data transmission in the same sub-district, because these down links are orthogonal, therefore, can avoid disturbing in the sub-district.But the down link between the different districts may not be a quadrature, and therefore, each terminal all may be subjected to the descending interference from other neighbor cell base station, i.e. presence of intercell interference.

The reduction presence of intercell interference is an important goal of cellular system design to the influence of systematic function, if the serious interference of minizone, then the transmittability of power system capacity, particularly Cell Edge User be can reduce, and then the covering power of system and the performance of terminal influenced.In order to overcome presence of intercell interference, can adopt fractional frequency reuse technology (FractionalFrequency Reuse abbreviates FFR as), give corresponding terminal with other resource allocation of different sub carrier power stage, to reduce presence of intercell interference intensity.

Fig. 1 is the schematic diagram of the transmission power limit situation of the frequency resource allocation mode of adjacent three sectors and each frequency partition (Frequency Partition abbreviates FP as).As shown in Figure 1, the cardinal principle of FFR is:

At first, available frequency resources is divided into the individual FP of N (N is the integer greater than zero), supposes N=4, be about to available frequency resources and be divided into [FP ₁, FP ₂, FP ₃, FP ₄].Wherein, FP ₂, FP ₃, FP ₄Frequency re-use factor be 3 (they are Reuse3, are also referred to as Reuse1/3), FP ₂, FP ₃, FP ₄In frequency resource allocation give sector in three adjacent sectors, and this frequency resource can not be used in other two sectors or need to adopt the method for the subcarrier transmitting power that limits this frequency resource to use this frequency resource; FP ₁Frequency re-use factor is 1 (being Reuse 1), and three adjacent sectors can use this frequency resource.

Then, each terminal is by measuring the channel quality (for example, the average signal of each FP and interference and noise ratio SINR, or the interference measure of each FP) of each FP, arrives the base station to the channel quality information of the individual FP of base station feedback M (M 〉=1).

At last, the base station is the terminal distribution resource according to the channel quality information situation of the FP of terminal to report.

According to foregoing description as can be known, the channel quality information of each terminal on each FP only known in the base station, could be the terminal distribution resource rationally, but in correlation technique, not exist a kind of effective method of measurement to obtain the channel quality information of terminal on each FP as yet.

Summary of the invention

In view of this, the invention provides a kind of channel quality measurement scheme, in order to solve the problem that can't effectively obtain the channel quality information of terminal on each FP in the prior art.

According to an aspect of the present invention, provide a kind of signal channel quality measuring method, this method is used for measuring the channel quality information of wireless communication system.

Signal channel quality measuring method according to the present invention comprises: the base station sends reference signal by down channel on frequency partition, so that terminal is measured the channel quality information of said frequencies subregion by this reference signal.

According to another aspect of the present invention, provide a kind of interference strength method of measurement.

Interference strength method of measurement according to the present invention comprises: the base station does not send any information on predetermined running time-frequency resource, wherein, this predetermined running time-frequency resource comprises one or more symbols in time-domain, and frequency domain comprises the subcarrier on one or more frequency partition; By measuring the signal on the above-mentioned predetermined running time-frequency resource, terminal obtains the interference strength on above-mentioned one or more frequency partition.

According to a further aspect of the invention, provide a kind of transmitting power acquisition methods, this method is used for the transmitting power configuration information that terminal is obtained frequency partition.

Transmitting power acquisition methods according to the present invention comprises: the base station is notified to terminal by down channel with the transmitting power configuration information of frequency partition.

According to a further aspect of the invention, provide a kind of channel quality measurement system.

Comprise according to channel quality measurement of the present invention system: base station and terminal.Wherein, the base station is used for sending reference signal by down channel on frequency partition; Terminal is used to receive reference signal, and according to the channel quality information of reference signal measuring frequency subregion.

According to a further aspect of the invention, provide a kind of interference strength measuring system.

Interference strength measuring system according to the present invention comprises: base station and terminal.Wherein, the base station, be used on predetermined running time-frequency resource, not sending any content, so that the terminal of base station as serving BS received only from other signal of base station except that the base station on predetermined running time-frequency resource, wherein, predetermined running time-frequency resource comprises one or more symbols in time-domain, and frequency domain comprises the subcarrier on one or more frequency partition; Terminal is used to measure the signal on the predetermined running time-frequency resource, obtains the interference strength on one or more frequency partition.

Another aspect according to the present invention provides a kind of transmitting power to obtain system.

Transmitting power according to the present invention is obtained system and is comprised: base station and terminal.Wherein, the base station is used for by down channel the transmitting power configuration information of frequency partition being notified to terminal; Terminal is used to receive the notice that the base station sends, and obtains the transmitting power configuration information of frequency partition according to notice.

By above-mentioned at least one scheme of the present invention, the base station sends reference signal by down channel according to the transmitting power of each FP on each FP, so that terminal is measured the channel quality information of each frequency partition by reference signal, thereby can improve the accuracy of the channel quality information of measuring on the terminal.

Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.

Description of drawings

Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is the schematic diagram of the transmission power limit situation of the frequency resource allocation method of adjacent sectors in the prior art and each frequency partition;

Fig. 2 is the flow chart according to the signal channel quality measuring method of the embodiment of the invention;

Fig. 3 is the flow chart according to the interference strength method of measurement of the embodiment of the invention;

The flow chart of Fig. 4 for obtaining according to the transmitting power of the embodiment of the invention;

Fig. 5 is the frame structure schematic diagram of a 802.16m system in the embodiment of the invention;

Fig. 6 is the FP division of 802.16m system base station of three adjacent sectors after enabling FFR in the embodiment of the invention and the schematic diagram of power configuration situation;

Fig. 7 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment one;

Fig. 8 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment two;

Fig. 9 is the structure and the flow chart of data processing figure of the system of employing MIMO technology and precoding technique;

Figure 10 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment three;

Figure 11 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment four;

Figure 12 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment five;

Figure 13 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment six;

Figure 14 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment seven;

Figure 15 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment eight;

Figure 16 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment nine;

Figure 17 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment ten;

Figure 18 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment 11;

Figure 19 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment 12;

Figure 20 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment 13;

Figure 21 is the schematic diagram that each frequency partition of each base station sends reference signal among the embodiment 14.

Embodiment

Functional overview

When adopting fractional frequency reuse, in order to give relevant terminal with other resource allocation of different sub carrier power stage, the base station at first needs to obtain the channel quality information of each frequency partition that terminal measures, in embodiments of the present invention, a kind of signal channel quality measuring method is provided, and this method is used for measuring the channel quality information of wireless communication system.In embodiments of the present invention, the base station sends reference signal by down channel on frequency partition, wherein, the base station sends the transmitting power of reference signal and this frequency partition on each frequency partition transmitting power (for example, average transmit power) correspondence, terminal is carried out the measurement of channel quality by this reference signal, thereby can improve the accuracy of the channel quality information of measurement.

Under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.

At present, terminal is to measure the channel quality information of each frequency partition by middle pilot signal, and for the different frequency partition of transmitting power, the transmitting power of the middle pilot signal that the base station sends is all identical, thereby the channel quality information that makes terminal measure is not accurate enough, at this problem, the embodiment of the invention provides three kinds of schemes.Wherein, first kind of scheme is that the base station sends reference signal to terminal on frequency partition, by this reference signal, and the channel quality information that terminal can the measuring frequency subregion; The serving BS that second kind of scheme is terminal does not send any content on the scheduled time territory of the predetermined subcarrier of one or more frequency partition, so that terminal receives only from other signal of base station, thereby can obtain interference strength on above-mentioned one or more frequency partition on this running time-frequency resource; To be the base station notify other indication informations of transmit power levels of one or more frequency partition to terminal to third party's case, so that terminal obtains the transmitting power configuration of each frequency partition.Respectively these three kinds of methods are described below.

According to the embodiment of the invention, a kind of signal channel quality measuring method at first is provided, this method is used for measuring the channel quality of wireless communication system.

Fig. 2 is the flow chart according to the signal channel quality measuring method of the embodiment of the invention, as shown in Figure 2, mainly may further comprise the steps (step S201-step S203) according to the signal channel quality measuring method of the embodiment of the invention:

Step S201: the base station sends reference signal by down channel on one or more frequency partition, and wherein, this reference signal is used for the channel quality information that terminal is measured these one or more frequency partition;

Particularly, the base station need send above-mentioned reference signal on which frequency partition in the frequency partition set can be determined by this base station, also can be determined and is notified to this base station by the upper strata network element, perhaps, also can determine according to standard default configuration in advance.Wherein, above-mentioned upper strata network element can be one of following network element: base station, trunking, base station controller, access service network, connection service network, core net, core net gateway etc.

Particularly, the channel quality information that need measure of terminal comprise following one of at least: received signal intensity indication information, interference measure; Signal and interference and noise ratio (SINR); Signal and interference ratio; Signal and noise ratio; Spectrum efficiency; And other measured value relevant with channel quality.

In concrete the application, the content and the structure of the above-mentioned reference signal that the base station sends are that base station and terminal are known, the content and the structure of this reference signal can be determined by holding consultation with terminal in advance in concrete base station, and perhaps, the content of this reference signal and structure also can be by standard configurations.And, in concrete the application, this reference signal can be a kind of pilot frequency sequence (for example, middle pilot tone), if pilot tone in the middle of adopting, the sequence of middle pilot tone constitutes can be by standard configuration, and terminal obtains channel quality information on each frequency partition by pilot tone in the middle of measuring.

Particularly, the base station can send above-mentioned reference signal on the specific subcarrier of above-mentioned one or more frequency partition, this specific subcarrier can be determined by the base station, also can determine and notify described base station by the upper strata network element, perhaps, also can be according to standard default configuration in advance, same, above-mentioned upper strata network element also can be one of following network element: base station, trunking, base station controller, access service network, connection service network, core net, core net gateway etc.

Particularly, the base station sends the transmitting power of above-mentioned reference signal and determines according to the transmitting power (being the average transmit power of the subcarrier of each frequency partition) of each frequency partition on the specific subcarrier of above-mentioned one or more frequency partition, particularly, the transmitting power of certain frequency partition is high more, and the base station sends reference signal on the specific subcarrier of this frequency partition transmitting power is high more.

Preferably, the base station on the specific subcarrier of each frequency partition, send the transmitting power of reference signal can be identical with the transmitting power of the data subcarrier of this frequency partition; Perhaps, the base station transmitting power that sends the data subcarrier of the transmitting power of reference signal and this frequency partition on the specific subcarrier of each frequency partition keeps the transmit power differences determined.

Step S201: terminal receives above-mentioned reference signal, by measuring the channel quality information that this reference signal obtains above-mentioned one or more frequency partition.

According to the embodiment of the invention, also provide a kind of interference strength method of measurement.

Fig. 3 is the flow chart according to the interference strength method of measurement of the embodiment of the invention, as shown in Figure 3, mainly may further comprise the steps (step S301-step S303) according to the interference strength method of measurement of the embodiment of the invention:

Step S301: the base station does not send any content on predetermined running time-frequency resource, so that terminal receives only on this running time-frequency resource from other signal of base station except that this base station, wherein, predetermined running time-frequency resource comprises that in time-domain one or more symbols constitute, and frequency domain comprises the subcarrier on one or more frequency partition;

Step S303: by measuring the signal on the above-mentioned predetermined running time-frequency resource, terminal obtains the interference strength on above-mentioned one or more frequency partition.

Wherein, above-mentioned terminal is to be a terminal or one group of terminal of serving BS with above-mentioned base station.Because the serving BS of terminal does not send any signal on above-mentioned predetermined running time-frequency resource, therefore, terminal receives signal on this running time-frequency resource be from other signal of base station, and by measuring this signal, terminal can obtain the interference strength of corresponding frequency partition.

Particularly, above-mentioned predetermined running time-frequency resource can be determined by this serving BS, also can be determined and is notified to this serving BS by the upper strata network element, perhaps, also can determine according to the standard default configuration.Wherein, above-mentioned upper strata network element can be one of following network element: base station, trunking, base station controller, access service network, connection service network, core net, core net gateway etc.

In specific implementation process, corresponding above-mentioned predetermined running time-frequency resource can be identical on identical frequency partition for different base station, also can be inequality, and preferably, the above-mentioned predetermined running time-frequency resource of different base station correspondence on identical frequency partition is inequality.

According to the embodiment of the invention, the transmitting power acquisition methods also is provided, this method is used for the transmitting power configuration that terminal is obtained frequency partition.

Fig. 4 is the flow chart according to the transmitting power acquisition methods of the embodiment of the invention, as shown in Figure 4, mainly may further comprise the steps (step S401-step S403) according to the transmitting power acquisition methods of the embodiment of the invention:

Step S401: the base station is by the transmitting power configuration information notice terminal of down channel with one or more frequency partition.

Wherein, above-mentioned one or more frequency partition can be a part or all of frequency partition in the frequency partition set.

In specific implementation process, the base station can be notified the transmitting power configuration information of the above-mentioned one or more frequency partition of terminal in the following ways:

(1) base station is carried at the transmitting power configuration information of above-mentioned one or more frequency partition and sends to terminal in the signaling, particularly, the absolute value that can comprise the transmitting power of each frequency partition in this transmitting power configuration information, also can be with the transmitting power of one of them frequency partition as reference power, join each frequency partition of absolute value and other of comprising this reference power in the configuration information relative transmission power level in this transmitting power with respect to this transmitting power;

(2) the transmitting power configuration index table of storing frequencies subregion in advance in base station and terminal, write down each transmitting power configuration information of each frequency partition in the frequency partition set in this concordance list according to index information, the base station is when the transmitting power configuration information of the above-mentioned one or more frequency partition of notice terminal, the index information of the transmitting power configuration information correspondence of the above-mentioned one or more frequency partition in this concordance list is sent to terminal, terminal is according to the indication of this index information, obtain the position of transmitting power configuration information in this concordance list of above-mentioned one or more frequency partition, thereby get access to the transmitting power configuration information of above-mentioned one or more frequency partition;

(3) base station sends default signaling to terminal, and the transmitting power configuration information of the corresponding frequency partition of default signaling is obtained and received to terminal according to the corresponding relation of the transmitting power configuration information of default signaling of storing in advance and frequency partition.

Wherein, it is one of following that above-mentioned default signaling comprises: the identifying information (SegmentID) of the identifying information of base station (IDCell), sector, the auxilliary leading identification information of evolution (SecondAdvanced Preamble Index abbreviates SA-Preamble Index as).

Wherein, above-mentioned corresponding relation is meant the corresponding relation between the transmitting power configuration information of presetting signaling and above-mentioned one or more frequency partition, and terminal is by receiving the transmitting power configuration information of presetting signaling and can obtaining above-mentioned one or more frequency partition according to this corresponding relation.

In specific implementation process, the above-mentioned corresponding relation of terminal storage can be the standard default configuration, also can be in advance and the back of holding consultation between the base station is determined.

Step S403: terminal receives the notice that the base station sends, and obtains the transmitting power configuration information of above-mentioned one or more frequency partition according to this notice.

Corresponding with above-mentioned three kinds of methods, the embodiment of the invention provides three kinds of systems, is respectively applied for the above-mentioned three kinds of methods that realize.Below be described respectively.

According to the embodiment of the invention, also provide a kind of channel quality measurement system.

Channel quality measurement system according to the embodiment of the invention comprises: base station and terminal, and wherein, the base station is used for sending reference signal by down channel on frequency partition; Terminal is used to receive above-mentioned reference signal, and measures the channel quality information of said frequencies subregion according to this reference signal.

According to the embodiment of the invention, also provide a kind of interference strength measuring system.

Interference strength measuring system according to the embodiment of the invention comprises: base station and terminal, wherein, the base station, be used on predetermined running time-frequency resource, not sending any content, so that the terminal of this base station as serving BS received only on above-mentioned predetermined running time-frequency resource from other signal of base station except that this base station, wherein, predetermined running time-frequency resource comprises that in time-domain one or more symbols constitute, and frequency domain comprises the subcarrier on one or more frequency partition; Terminal is used to measure the signal on the above-mentioned predetermined running time-frequency resource, obtains the interference strength on above-mentioned one or more frequency partition.

According to the embodiment of the invention, also provide a kind of transmitting power to obtain system.

Obtaining system according to the transmitting power of the embodiment of the invention comprises: base station and terminal.Wherein, the base station is used for by down channel the transmitting power configuration information of frequency partition being notified to terminal; Terminal is used to receive above-mentioned notice, and obtains the transmitting power configuration information of said frequencies subregion according to this notice.

For further understanding the technique scheme that the embodiment of the invention provides, the technical scheme that the embodiment of the invention provides is described below by specific embodiment.

Below among the embodiment, divide and the power configuration situation is that example describes with the FP of the base station of frame structure shown in Figure 5 and three adjacent sectors shown in Figure 6.

Fig. 5 is the frame structure schematic diagram of a 802.16m system, and as shown in Figure 5, a superframe (Superframe) is 20ms, comprises 4 frames (Frame).A frame is 5ms, comprises 8 subframes (Subframe).A subframe comprises K OFDM symbol (Symbol), and K is 6 in the present embodiment.An OFDM symbol comprises N (N＞=1) individual subcarrier (Subcarrier) on frequency domain.And N subcarrier can be divided into M frequency partition (FrequencyPartition).Hypothesis M is 4 in the present embodiment, is about to N subcarrier and is divided into 4 FP, i.e. FP1, FP2, FP3 and FP4.

Fig. 6 is the base station BS 1 of 802.16m system three adjacent sectors after having enabled FFR, the FP division of BS2, BS3 and the schematic diagram of power configuration situation.As shown in Figure 6, at first frequency resource is divided into four FP, wherein the frequency re-use factor of FP2, FP3, FP4 is Reuse1/3, and the frequency re-use factor of FP1 is Reuse1.[FP among the BS1 ₁, FP ₂, FP ₃, FP ₄] average subcarrier transmitting power be [P _Reuse1, P _High, P _Low1, P _Low2], [FP among the BS2 ₁, FP ₂, FP ₃, FP ₄] average subcarrier transmitting power be [P _Reuse1, P _Low2, P _High, P _Low1], [FP among the BS3 ₁, FP ₂, FP ₃, FP ₄] average subcarrier transmitting power be [P _Reuse1, P _Low1, P _Low2, P _High].Present embodiment, [FP among the BS1 ₁, FP ₂, FP ₃, FP ₄] average subcarrier transmitting power be [P ₀, P ₀, P ₀/ 2, P ₀/ 2], [FP among the BS2 ₁, FP ₂, FP ₃, FP ₄] average subcarrier transmitting power be [P ₀, P ₀/ 2, P ₀, P ₀/ 2], [FP among the BS3 ₁, FP ₂, FP ₃, FP ₄] average subcarrier transmitting power be [P ₀, P ₀/ 2, P ₀/ 2, P ₀].

Embodiment one

In the present embodiment, with the example of single antenna, the above-mentioned first method that the embodiment of the invention is provided describes.

In the present embodiment, after FFR enables, the channel quality information of FP is measured by sending reference signal in the base station for terminal, terminal is given the base station with the channel quality information feedback of the FP that measures, and the base station is the terminal distribution resource according to feedback information of receiving and the terminal related information of having stored.

Wherein, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, and the cycle that sends reference signal can be identical or different, suppose in the present embodiment that BS1, BS2, BS3 utilize last the OFDM symbol (i.e. the 6th OFDM symbol) of the subframe SF2 (Subframe2) in the same number of frames in the identical superframe to send reference signal, as shown in Figure 7, the subcarrier SC1 to SC8 of black square among the sub-carrier positions that specifically takies of reference signal such as Fig. 7.The transmitting power that BS1, BS2, BS3 transmission reference signal take subcarrier need be configured according to the average sub-carrier power of corresponding base station on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 and SC2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1orSC2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1orSC2, BS1}The transmitting power of expression SC1 and SC2, Δ _{1, BS1}Expression P _{SC1orSC2, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1orSC2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC3 and SC4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC3orSC4, BS1}=(1 ± Δ _2BS1) P ₀The transmitting power of BS1 sub-carriers SC5 and SC6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC5orSC6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC7 and SC8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC7orSC8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1orSC2, BS1}=P ₀, P _{SC3orSC4, BS1}=P ₀, P _{SC5orSC6, BS1}=P ₀/ 2, P _{SC7orSC8, BS1}=P ₀/ 2.

Equally, the transmitting power of supposing BS2 sub-carriers SC1-SC8 is P _{SC1orSC2, BS2}=P ₀, P _{SC3orSC4, BS2}=P ₀/ 2, P _{SC5orSC6, BS2}=P ₀, P _{SC7orSC8, BS2}=P ₀/ 2

Equally, the transmitting power of supposing BS3 sub-carriers SC1-SC8 is P _{SC1orSC2, BS3}=P ₀, P _{SC3orSC4, BS3}=P ₀/ 2, P _{SC5orSC6, BS3}=P ₀/ 2, P _{SC7orSC8, BS3}=P ₀

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, when BS1 after the 6th OFDM symbol of subframe SF2 (Subframe2) sends reference signal, the channel quality information that terminal MS 1 is measured on the subcarrier SC1 to SC8 feeds back the channel quality information of specific FP to BS1.Wherein, specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and this specific FP can comprise one or more FP or whole FP.

When base station BS 1, BS2, BS3 utilize the subcarrier SC1-SC8 of the 6th the OFDM symbol of subframe SF2 to send reference signal, also can send data message with other available subcarriers on this symbol; Perhaps, when base station BS 1, BS2, BS3 utilized the subcarrier SC1-SC8 of the 6th the OFDM symbol of subframe SF2 to send reference signal, other subcarriers did not send content on this symbol;

Particularly, base station BS 1, BS2, BS3 can utilize whole available subcarriers of the 6th the OFDM symbol of subframe SF2 to send reference signal;

Need to prove that the transmission position of reference signal is not limited in the 6th the OFDM symbol of the subframe SF2 that chooses in the present embodiment, also can be positioned at other symbols, also can be positioned at other descending sub frames, also can be positioned at a plurality of OFDM symbols.

In addition, in the 802.16m system, reference signal can make channel quality measurement more accurate of FP in conjunction with middle pilot tone (Midamble).Terminal MS 1 obtains the channel matrix of FP by pilot tone in the middle of measuring, and passes through the channel quality information that measuring reference signals SC1 to SC8 obtains FP, feeds back the channel quality information of specific FP to BS1.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Wherein, middle pilot tone (Midamble) is meant the specific pilot sequence that sends on the special symbol in a frame, be used for carrying out channel measurement at receiving terminal, be 1 frame transmission same period of middle pilot tone, and the transmitting power of all subcarriers of taking of middle pilot tone is identical.Pilot tone can estimate the channel of all sub-carrier positions on the whole symbol in the middle of using.

Embodiment two

In the present embodiment, be that example describes with the single antenna.

Wherein, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, comprises pilot reference signal and data reference signal.In the present embodiment, the transmission cycle of reference signal is identical, BS1, BS2, BS3 utilize last the OFDM symbol (the 6th OFDM symbol) of the interior subframe SF2 (Subframe2) of same number of frames in the identical superframe to send reference signal, as shown in Figure 5, P1 is the pilot reference signal of BS1, P2 is the pilot reference signal of BS2, P3 is the pilot reference signal of BS3, the transmitting power of P1, P2, P3 subcarrier is identical, the subcarrier SC1 to SC8 of black square among the sub-carrier positions that data reference signal specifically takies such as Fig. 8.The transmitting power that BS1, BS2, BS3 transmission data reference signal take subcarrier need be configured according to the average sub-carrier power of corresponding base station on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 and SC2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1orSC2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1orSC2, BS1}The transmitting power of expression SC1 and SC2, Δ _{1, BS1}Expression P _{SC1orSC2, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1orSC2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC3 and SC4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC3orSC4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC5 and SC6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC5orSC6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC7 and SC8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC7orSC8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1orSC2, BS1}=P ₀, P _{SC3orSC4, BS1}=P ₀, P _{SC5orSC6, BS1}=P ₀/ 2, P _{SC7orSC8, BS1}=P ₀/ 2.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after 6th the OFDM symbol transmission reference signal of BS1 at subframe SF2 (Subframe2), terminal MS 1 measurement pilot frequency reference signal P1 obtains the channel matrix of FP, and, feed back the channel quality information of specific FP to BS1 by the channel quality information of measurement data reference signal SC1 to SC8 acquisition FP.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

And in the present embodiment, base station BS 1 does not send data on the subcarrier of BS2 transmission pilot reference signal P2, and base station BS 1 does not send data on the subcarrier of BS3 transmission pilot reference signal P3.Base station BS 1 can utilize that other available subcarriers send data messages or do not send data message on the symbol that sends reference signal.In like manner, can adopt identical processing for base station BS 2 with BS3.

Base station BS 1, BS2, BS3 can utilize whole available subcarriers of the 6th the OFDM symbol of subframe SF2 to send reference signal;

Need to prove that the transmission position of reference signal is not limited in the 6th the OFDM symbol of the subframe SF2 that chooses in the present embodiment, also can be positioned at other OFDM symbols, also can be positioned at other descending sub frames, also can be positioned at a plurality of OFDM symbols.

Embodiment three

Present embodiment is that example describes with many antennas.

In the present embodiment, system has used MIMO technique (Multiple-InputMultiple-Output, abbreviate MIMO as) and precoding technique (Precode), the structure of this system and flow chart of data processing are as shown in Figure 9, at first data to be sent are divided into the individual layer of L (L＞=1) (layer), then the data of this L layer are sent into MIMO encoder (MIMO encoder), generate Mt (the individual data flow (Stream) of Mt＞=L), again this Mt Stream is sent into precoder (Precoder), data map the most to be sent goes up to Nt antenna (Antenna) and sends.

Wherein, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, and the transmission cycle can be identical or different.Suppose in the present embodiment that BS1, BS2, BS3 utilize last the OFDM symbol (the 6th OFDM symbol) of the subframe SF2 (Subframe2) in the same number of frames in the identical superframe to send reference signal.

Be the process of transmitting that example specifically describes reference signal below with BS1.

BS1 at first will be divided into a L layer through the reference signal behind the modulating-coding, generate M after then the data of L layer being sent into MIMO encoder _tIndividual Stream is again with this M _tIndividual Stream sends into Precoder, and reference signal is mapped to N the most at last _tIndividual antenna (Antenna) is gone up and is sent.Wherein, the processing procedure of Precoder is to work as M _tAfter individual Stream sent into Precoder, a pre-coding matrix PM-a was selected from known pre-coding matrix set in the base station, and PM-a be multiply by M _tIndividual Stream is mapped to N with the result _tIndividual antenna (Antenna) is gone up and is sent.Wherein, the base station can be by the standard default configuration when selecting pre-coding matrix PM-a, or the base station select at random and with the PMI sequence number notice terminal of the PM-a that selects.

As shown in figure 10, reference signal is at N _tIndividually (suppose N in the present embodiment _t=2) antenna (Antenna) is gone up and is sent, the subcarrier SC1 to SC16 of the square that band is filled among the sub-carrier positions that specifically takies such as Figure 10.The transmitting power that BS1 transmission reference signal takies subcarrier need be configured according to the average sub-carrier power of BS1 on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 to SC4 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1-SC4, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1-SC4, BS1}The transmitting power of expression SC1, SC2, SC3, SC4, Δ _{1, BS1}Expression P _{SC1-SC4, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1-SC4, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC5 to SC8 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC5-SC8, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC9 and SC12 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC9-SC12, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC13 and SC16 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC13-SC16, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1-SC4, BS1}=P ₀, P _{SC5-SC8, BS1}=P ₀, P _{SC9-SC12, BS1}=P ₀/ 2, P _{SC13-SC16, BS1}=P ₀/ 2.

Equally, the transmitting power of supposing BS2 sub-carriers SC1-SC16 is P _{SC1-SC4, BS2}=P ₀, P _{SC5-SC8, BS2}=P ₀/ 2, P _{SC9-SC12, BS2}=P ₀, P _{SC13-SC16, BS2}=P ₀/ 2

Equally, the transmitting power of supposing BS3 sub-carriers SC1-SC16 is P _{SC1-SC4, BS3}=P ₀, P _{SC5-SC8, BS3}=P ₀/ 2, P _{SC9-SC12, BS3}=P ₀/ 2, P _{SC13-SC16, BS3}=P ₀

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, when BS1 after the 6th OFDM symbol of subframe SF2 (Subframe2) sends reference signal, the channel quality information that terminal MS 1 is measured on the subcarrier SC1 to SC16 feeds back the channel quality information of specific FP to BS1.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

When base station BS 1, BS2, BS3 utilize the subcarrier SC1-SC16 of the 6th the OFDM symbol of subframe SF2 to send reference signal, also can send data message with other available subcarriers on this symbol; Perhaps, when base station BS 1, BS2, BS3 utilized the subcarrier SC1-SC16 of the 6th the OFDM symbol of subframe SF2 to send reference signal, other subcarriers did not send content on this symbol;

In addition, in the 802.16m system, reference signal can make channel quality measurement more accurate of FP in conjunction with middle pilot tone (Midamble).Terminal MS 1 obtains the channel matrix of FP by pilot tone in the middle of measuring, and passes through the channel quality information that measuring reference signals SC1 to SC16 obtains FP, feeds back the channel quality information of specific FP to BS1.Wherein, this specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and this specific FP can comprise one or more FP or whole FP.

Embodiment four

This embodiment is that example describes with many antennas.

In this first draft example, after FFR enables, the channel quality information of FP is measured by sending reference signal in the base station for terminal, terminal is given the base station with the channel quality information feedback of the FP that measures, and the base station is the terminal distribution resource according to feedback information of receiving and the terminal related information of having stored.

In the present embodiment, it is flow chart of data processing that system has also adopted structure as shown in Figure 9, and wherein, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, and the transmission cycle is identical.Suppose in the present embodiment that BS1, BS2, BS3 utilize last the OFDM symbol (the 6th OFDM symbol) of the subframe SF2 (Subframe2) in the same number of frames in the identical superframe to send reference signal.

BS1 at first will be divided into a L layer through the reference signal behind the modulating-coding, generate M after then the data of this L layer being sent into MIMOencoder _tIndividual Stream is again with this M _tIndividual Stream sends into Precoder, and reference signal is mapped to N the most at last _tIndividual antenna (Antenna) is gone up and is sent.Wherein, the processing procedure of Precoder is to work as M _tAfter individual Stream sent into Precoder, the base station was selected a pre-coding matrix PM-a by pre-coding matrix index (Precode MatrixIndication abbreviates PMI as) from known pre-coding matrix set, and PM-a be multiply by M _tIndividual Stream is mapped to N with the result _tIndividual antenna (Antenna) is gone up and is sent.Wherein, the base station can be by the standard default configuration when selecting pre-coding matrix PM-a, or the base station select at random and with the PMI sequence number notice terminal of the PM-a that selects.

Reference signal is at N _tIndividually (suppose N in the present embodiment _t=2) antenna (Antenna) is gone up sub-carrier positions that transmission specifically takies as shown in figure 11, and wherein, reference signal comprises pilot reference signal and data reference signal.Wherein P1-1 is the pilot reference signal of the antenna 1 of BS1, and P1-2 is the pilot reference signal of the antenna 2 of BS1, and the pilot reference signal of BS1, BS2 and BS3 adopts the mode of frequency division multiplexing.The subcarrier SC1 to SC16 of black square is a data reference signal.The transmitting power that BS1 transmission data reference signal takies subcarrier need be configured according to the average sub-carrier power of BS1 on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 to SC4 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1-SC4, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1-SC4, BS1}The transmitting power of expression SC1, SC2, SC3, SC4, Δ _{1, BS1}Expression P _{SC1-SC4, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1-SC4, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC5 to SC8 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC5-SC8, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC9 and SC12 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC9-SC12, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC13 and SC16 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC13-SC16, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1-SC4, BS1}=P ₀, P _{SC5-SC8, BS1}=P ₀, P _{SC9-SC12, BS1}=P ₀/ 2, P _{SC13-SC16, BS1}=P ₀/ 2.

Equally, the transmitting power of supposing BS3 sub-carriers SC1-SC 16 is P _{SC1-SC4, BS3}=P ₀, P _{SC5-SC8, BS3}=P ₀/ 2, P _{SC9-SC12, BS3}=P ₀/ 2, P _{SC13-SC16, BS3}=P ₀

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after 6th the OFDM symbol transmission reference signal of BS1 at subframe SF2 (Subframe2), terminal MS 1 measurement pilot frequency reference signal P1-1, P1-2 obtain the channel matrix of FP, and, feed back the channel quality information of specific FP to BS1 by the channel quality information of measurement data reference signal SC1 to SC16 acquisition FP.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Base station BS 1 does not send data on the subcarrier of BS2 transmission pilot reference signal P2, base station BS 1 does not send data on the subcarrier of BS3 transmission pilot reference signal P3.Base station BS 1 can utilize that other available subcarriers send data messages or do not send data message on the symbol that sends reference signal.In like manner, can carry out identical processing for base station BS 2 with BS3.

Embodiment five

Present embodiment is that example describes with the single antenna.

In the present embodiment, pilot tone sent reference signal in the middle of the base station utilized, in the 802.16m system, middle pilot tone (Midamble) is meant on the special symbol in a frame and sends specific pilot frequency sequence, be used for carrying out channel measurement at receiving terminal, pilot tone in the middle of for example in the penult subframe of descending sub frame, sending on first OFDM symbol of (being subframe SF3 in the present embodiment), and the transmission cycle of middle pilot tone is 1 frame, and the transmitting power of all subcarriers of taking of middle pilot tone is identical.Pilot tone can estimate the channel of all sub-carrier positions on the whole symbol in the middle of using, like this can be so that transmitting terminal according to current channel conditions, reasonably adopts transmission policy efficiently.

In the present embodiment, after FFR enables, the transmission cycle of base station pilot tone in the middle of N (N＞=1) is individual, the OFDM symbol of pilot tone sends reference signal (in the middle of promptly this symbol does not send pilot tone and send reference signal) is measured FP for terminal channel quality information in the middle of utilize sending, terminal is given the base station with the channel quality information feedback of the FP that measures, and the base station is the terminal distribution resource according to feedback information of receiving and the terminal related information of having stored.

In the present embodiment, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, utilize the 1st the OFDM symbol of subframe SF3 (Subframe3) to send reference signal, the sub-carrier positions that reference signal specifically takies is shown in black square subcarrier SC1 to SC8 among Figure 12.The transmitting power that BS1, BS2, BS3 transmission reference signal take subcarrier need be configured according to the average sub-carrier power of corresponding base station on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 and SC2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1orSC2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1orSC2, BS1}The transmitting power of expression SC1 and SC2, Δ _{1, BS1}Expression P _{SC1orSC2, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1orSC2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC3 and SC4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC3orSC4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC5 and SC6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC5orSC6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC7 and SC8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC7orSC8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1orSC2, BS1}=P ₀, P _{SC3orSC4, BS1}=P ₀, P _{SC5orSC6, BS1}=P ₀/ 2, P _{SC7orSC8, BS1}=P ₀/ 2.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, when BS1 after the 1st OFDM symbol of subframe SF3 (Subframe2) sends reference signal, the channel quality information that terminal MS 1 is measured on the subcarrier SC1 to SC8 feeds back the channel quality information of specific FP to BS1.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

When base station BS 1, BS2, BS3 utilize the subcarrier SC1-SC8 of the 1st the OFDM symbol of subframe SF3 to send reference signal, also can send data message with other available subcarriers on this symbol; Or base station BS 1, BS2, BS3 be when utilizing the subcarrier SC1-SC8 of the 1st the OFDM symbol of subframe SF3 to send reference signal, and other subcarriers do not send content on this symbol;

Base station BS 1, BS2, BS3 can utilize whole available subcarriers of the 1st the OFDM symbol of subframe SF3 to send reference signal;

Embodiment six

Present embodiment is that example describes with the single antenna.

In an embodiment, after FFR enables, the transmission cycle of base station pilot tone in the middle of N (N＞=1) is individual, the OFDM symbol of pilot tone sends reference signal (in the middle of promptly this symbol does not send pilot tone and send reference signal) is measured FP for terminal channel quality information in the middle of utilize sending, terminal is given the base station with the channel quality information feedback of the FP that measures, and the base station is the terminal distribution resource according to feedback information of receiving and the terminal related information of having stored.

The reference signal that BS1, BS2, BS3 send is the known signal of terminal.In the present embodiment, suppose to utilize the 1st the OFDM symbol of subframe SF3 (Subframe3) to send reference signal, the sub-carrier positions that reference signal specifically takies comprises pilot reference signal and data reference signal as shown in figure 10.P1 is the pilot reference signal of BS1, and P2 is the pilot reference signal of BS2, and P3 is the pilot reference signal of BS3, and the transmitting power of P1, P2, P3 subcarrier is identical, and data reference signal is shown in black square subcarrier SC1 to SC8 among Figure 13.The transmitting power that BS1, BS2, BS3 transmission data reference signal take subcarrier need be configured according to the average sub-carrier power of corresponding base station on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 and SC2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1orSC2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1orSC2, BS1}The transmitting power of expression SC1 and SC2, Δ _{1, BS1}Expression P _{SC1orSC2, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1orSC2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC3 and SC4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC3orSC4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC5 and SC6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC5orSC6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC7 and SC8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC7orSC8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1orSC2, BS1}=P ₀, P _{SC3orSC4, BS1}=P ₀, P _{SC5orSC6, BS1}=P ₀/ 2, P _{SC7orSC8, BS1}=P ₀/ 2.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after 1st the OFDM symbol transmission reference signal of BS1 at subframe SF3 (Subframe3), terminal MS 1 measurement pilot frequency reference signal P1 obtains the channel matrix of FP, and, feed back the channel quality information of specific FP to BS1 by the channel quality information of measurement data reference signal SC1 to SC8 acquisition FP.Wherein, this specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and specific FP can comprise one or more FP or whole FP.

Base station BS 1 does not send data on the subcarrier of BS2 transmission pilot reference signal P2, base station BS 1 does not send data on the subcarrier of BS3 transmission pilot reference signal P3.Base station BS 1 can utilize that other available subcarriers send data messages or do not send data message on the symbol that sends reference signal.In like manner, be applicable to base station BS 2 and BS3.

Embodiment seven

Be that example describes with many antennas in the present embodiment, and in the present embodiment, system adopt as shown in Figure 9 structure and flow chart of data processing to handle.

Wherein, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, and utilizes the 1st the OFDM symbol of subframe SF3 (Subframe3) to send.

As shown in figure 14, reference signal is at N _tIndividually (suppose N in the present embodiment _t=2) the subcarrier SC1 to SC16 of black square among the sub-carrier positions that transmission specifically takies on the antenna (Antenna) such as Figure 14.The transmitting power that BS1 transmission reference signal takies subcarrier need be configured according to the average sub-carrier power of BS1 on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 to SC4 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1-SC4, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1-SC4, BS1}The transmitting power of expression SC1, SC2, SC3, SC4, Δ _{1, BS1}Expression P _{SC1-SC4, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1-SC4, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC5 to SC8 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC5-SC8, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC9 and SC12 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC9-SC12, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC13 and SC16 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC13-SC16, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1-SC4, BS1}=P ₀, P _{SC5-SC8, BS1}=P ₀, P _{SC9-SC12, BS1}=P ₀/ 2, P _{SC13-SC16, BS1}=P ₀/ 2.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, when BS1 after the 4th OFDM symbol of subframe SF3 (Subframe3) sends reference signal, the channel quality information that terminal MS 1 is measured on the subcarrier SC1 to SC16 feeds back the channel quality information of specific FP to BS1.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

When base station BS 1, BS2, BS3 utilize the subcarrier SC1-SC16 of the 1st the OFDM symbol of subframe SF3 to send reference signal, also can send data message with other available subcarriers on this symbol; Perhaps, when base station BS 1, BS2, BS3 utilized the subcarrier SC1-SC16 of the 1st the OFDM symbol of subframe SF3 to send reference signal, other subcarriers did not send content on this symbol;

Base station BS 1, BS2, BS3 can utilize whole available subcarriers of the 1st the OFDM symbol of subframe SF3 to send reference signal.

Embodiment eight

Sending reference signal with pilot tone in the middle of many antennas and the employing in the present embodiment is that example describes.And system adopts as shown in Figure 9 structure and flow chart of data processing figure in the present embodiment.

Wherein the reference signal of BS1, BS2, BS3 transmission is the known signal of terminal, and utilizes the 1st the OFDM symbol of subframe SF3 (Subframe3) to send.

Reference signal is at N _tIndividually (suppose N in the present embodiment _t=2) antenna (Antenna) is gone up sub-carrier positions that transmission specifically takies as shown in figure 15, and wherein, reference signal comprises pilot reference signal and data reference signal.Wherein P1-1 is the pilot reference signal of the antenna 1 of BS1, and P1-2 is the pilot reference signal of the antenna 2 of BS1, and the pilot reference signal of BS1, BS2 and BS3 adopts the mode of frequency division multiplexing.Wherein, the subcarrier SC1 to SC16 of black square is a data reference signal.The transmitting power that BS1 transmission data reference signal takies subcarrier need be configured according to the average sub-carrier power of BS1 on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 to SC4 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1-SC4, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1-SC4, BS1}The transmitting power of expression SC1, SC2, SC3, SC4, Δ _{1, BS1}Expression P _{SC1-SC4, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1-SC4, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC5 to SC8 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC5-SC8, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC9 and SC12 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC9-SC12, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC13 and SC16 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC13-SC16, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1-SC4, BS1}=P ₀, P _{SC5-SC8, BS1}=P ₀, P _{SC9-SC12, BS1}=P ₀/ 2, P _{SC13-SC16, BS1}=P ₀/ 2.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after 1st the OFDM symbol transmission reference signal of BS1 at subframe SF3 (Subframe3), terminal MS 1 measurement pilot frequency reference signal P1-1, P1-2 obtain the channel matrix of FP, and, feed back the channel quality information of specific FP to BS1 by the channel quality information of measurement data reference signal SC1 to SC16 acquisition FP.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Base station BS 1 does not send data on the subcarrier of BS2 transmission pilot reference signal P2, base station BS 1 does not send data on the subcarrier of BS3 transmission pilot reference signal P3.Base station BS 1 can utilize that other available subcarriers send data messages or do not send data message on the symbol that sends reference signal.In like manner, can adopt identical processing for base station BS 2 with BS3.

Embodiment nine

In the present embodiment with single antenna and take in the middle of the part pilot tone to send reference signal be that example describes.

In the 802.16m system, middle pilot tone (Midamble) is meant on the special symbol in a frame and sends specific pilot frequency sequence, be used for carrying out channel measurement at receiving terminal, pilot tone in the middle of for example in the penult subframe of descending sub frame, sending on first OFDM symbol of (being subframe SF3 in the present embodiment), and the transmission cycle of middle pilot tone is 1 frame, and the transmitting power of all subcarriers of taking of middle pilot tone is identical.Pilot tone can estimate the channel of all sub-carrier positions on the whole symbol in the middle of using, like this can be so that transmitting terminal according to current channel conditions, reasonably adopts transmission policy efficiently.

In the present embodiment, after FFR enables, the transmission cycle of base station pilot tone in the middle of N (N＞=1) is individual, utilize some frequency resources (being subcarrier) in the OFDM symbol that sends middle pilot tone to send reference signal is measured FP for terminal channel quality information, terminal is given the base station with the channel quality information feedback of the FP that measures, and the base station is the terminal distribution resource according to feedback information of receiving and the terminal related information of having stored.

In the present embodiment, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, utilize the middle parton carrier wave of the 1st OFDM symbol (pilot tone in the middle of sending on this symbol) of subframe SF3 (Subframe3) to send reference signal, the sub-carrier positions that reference signal specifically takies is shown in black square subcarrier SC1 to SC8 among Figure 16.The transmitting power that BS1, BS2, BS3 transmission reference signal take subcarrier need be configured according to the average sub-carrier power of corresponding base station on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 and SC2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1orSC2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1orSC2, BS1}The transmitting power of expression SC1 and SC2, Δ _{1, BS1}Expression P _{SC1orSC2, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1orSC2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC3 and SC4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC3orSC4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers SC5 and SC6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC5orSC6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC7 and SC8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC7orSC8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1orSC2, BS1}=P ₀, P _{SC3orSC4, BS1}=P ₀, P _{SC5orSC6, BS1}=P ₀/ 2, P _{SC7orSC8, BS1}=P ₀/ 2.

Therefore, after base station BS 1, BS2, BS3 used subcarrier SC1-SC8 to send reference signal, terminal was measured the channel quality information on the SC1 to SC8, fed back the channel quality information of specific FP and gave the base station.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after pilot tone and reference signal in the middle of the 1st the OFDM symbol transmission of BS1 at subframe SF3 (Subframe3), pilot tone M1 obtained the channel matrix of FP in the middle of terminal MS 1 was measured, and, feed back the channel quality information of specific FP to BS1 by the channel quality information of measuring reference signals SC1 to SC8 acquisition FP.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Embodiment ten

Present embodiment is with many antennas and take that pilot tone is that example describes in the middle of the part.

In the 802.16m system, middle pilot tone (Midamble) is meant on the special symbol in a frame and sends specific pilot frequency sequence, be used for carrying out channel measurement at receiving terminal, pilot tone in the middle of for example in the penult subframe of descending sub frame, sending on first OFDM symbol of (being subframe SF3 in the present embodiment), and the transmission cycle of middle pilot tone is 1 frame, and the transmitting power of all subcarriers of taking of middle pilot tone is identical.

In an embodiment, after FFR enables, the transmission cycle of base station pilot tone in the middle of N (N＞=1) is individual, utilize some frequency resources (being subcarrier) in the OFDM symbol that sends middle pilot tone to send reference signal is measured FP for terminal channel quality information, terminal is given the base station with the channel quality information feedback of the FP that measures, and the base station is the terminal distribution resource according to feedback information of receiving and the terminal related information of having stored.

In the present embodiment, system has used structure and the flow chart of data processing that adopts as shown in Figure 9.

Wherein, the reference signal that BS1, BS2, BS3 send is the known signal of terminal, and utilizes the parton carrier wave in the 1st the OFDM symbol (this symbol be used for sending in the middle of pilot tone) of subframe SF3 (Subframe3) to send.

Reference signal is at N _tIndividually (suppose N in the present embodiment _t=2) antenna (Antenna) is gone up sub-carrier positions that transmission specifically takies as shown in figure 17, and wherein, M1-1 is middle the pilot tone of the antenna 1 of BS1, and M1-2 is the middle pilot tone of the antenna 2 of BS1, the mode of the middle pilot tone employing frequency division multiplexing of BS1, BS2 and BS3.The subcarrier SC1 to SC16 of black square is a reference signal.The transmitting power that BS1 transmission reference signal takies subcarrier need be configured according to the average sub-carrier power of BS1 on FP1, FP2, FP3 and FP4.The transmitting power of BS1 sub-carriers SC1 to SC4 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{SC1-SC4, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{SC1-SC4, BS1}The transmitting power of expression SC1, SC2, SC3, SC4, Δ _{1, BS1}Expression P _{SC1-SC4, BS1}Unsteady coefficient, i.e. reflection allows P _{SC1-SC4, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers SC5 to SC8 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{SC5-SC8, BS1}=(1 ± Δ _{2, BS1}) P _{0; BS1}The transmitting power of sub-carriers SC9 and SC12 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{SC9-SC12, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers SC13 and SC16 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{SC13-SC16, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{SC1-SC4, BS1}=P ₀, P _{SC5-SC8, BS1}=P ₀, P _{SC9-SC12, BS1}=P ₀/ 2, P _{SC13-SC16, BS1}=P ₀/ 2.

Equally, the transmitting power of supposing BS2 sub-carriers SC1-SC16 is P _{SC1-SC4, BS2}=P ₀, P _{SC5-SC48, BS2}=P ₀/ 2, P _{SC9-SC12, BS2}=P ₀, P _{SC13-SC416, BS2}=P ₀/ 2

Equally, the transmitting power of supposing BS3 sub-carriers SC1-SC16 is P _{SC1-SC4, BS3}=P ₀, P _{SC5-SC48, BS3}=P ₀/ 2, P _{SC9-SC412, BS3}=P ₀/ 2, P _{SC13-SC416, BS3}=P ₀

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after pilot tone and reference signal in the middle of the 1st the OFDM symbol transmission of BS1 at subframe SF3 (Subframe3), pilot tone M1-1, M1-2 obtained the channel matrix of FP in the middle of terminal MS 1 was measured, and, feed back the channel quality information of specific FP to BS1 by the channel quality information of measuring reference signals SC1 to SC16 acquisition FP.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Embodiment 11

Present embodiment is that example describes with single antenna, by middle pilot tone embodiment difference power.

In the 802.16m system, middle pilot tone (Midamble) is meant and sends specific pilot frequency sequence on the special symbol in a frame, is used for carrying out channel measurement at receiving terminal.For example, in the present embodiment, pilot tone in the middle of middle pilot tone is arranged in and sends on first OFDM symbol of penult subframe (subframe SF3) of descending sub frame.The transmission cycle of the middle pilot tone of hypothesis is 1 frame in the present embodiment.

After FFR enabled, the base station need be configured according to the average sub-carrier power of base station on FP1, FP2, FP3 and FP4 in the transmitting power of the subcarrier that middle pilot tone takies.

In the present embodiment, BS1, BS2, BS3 utilize the 1st the OFDM symbol of subframe SF3 (Subframe3) to adopt the mode of Reuse3 to send middle pilot tone, and the sub-carrier positions that middle pilot tone specifically takies is shown in black square subcarrier among Figure 18.The transmitting power of BS1 sub-carriers M1-1 and M1-2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{M1-1orM1-2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{M1-1orM1-2, BS1}The transmitting power of expression M1-1 and M1-2, Δ _{1, BS1}Expression P _{M1-1orM1-2, BS1}Unsteady coefficient, i.e. reflection allows P _{M1-1orM1-2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers M1-3 and M1-4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{M1-3orM1-4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers M1-5 and M1-6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{M1-5orM1-6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers M1-7 and M1-8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{M1-7orM1-8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{M1-1orM1-2, BS1}=P ₀, P _{M1-3orM1-4, BS1}=P ₀, P _{M1-5orM1-6, BS1}=P ₀/ 2, P _{M1-7orM1-8, BS1}=P ₀/ 2.

Equally, the transmitting power of supposing BS2 sub-carriers M2-1 to M2-8 is P _{M2-1orM2-2, BS2}=P ₀, P _{M2-3orM2-4, BS2}=P ₀/ 2, P _{M2-5orM2-6, BS2}=P ₀, P _{M2-7orM2-8, BS2}=P ₀/ 2

Equally, the transmitting power of supposing BS3 sub-carriers M3-1 to M3-8 is P _{M3-1orM3-2, BS3}=P ₀, P _{M3-3orM3-4, BS3}=P ₀/ 2, P _{M3-5orM3-6, BS3}=P ₀/ 2, P _{M3-7orM3-8, BS3}=P ₀

Therefore, terminal is by the channel quality information on the middle pilot measurement FP, and the channel quality information that feeds back specific FP is given the base station.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after pilot tone in the middle of the 1st the OFDM symbol transmission of BS1 at subframe SF3 (Subframe3), pilot tone M1-1 to M1-8 obtained the channel quality information of FP1, FP2, FP3, FP4 in the middle of terminal MS 1 was measured, and fed back the channel quality information of specific FP to BS1.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Need to prove that the transmission position of middle pilot tone is not limited in the 1st the OFDM symbol of the subframe SF3 that chooses in the present embodiment, also can be positioned at other symbols, also can be positioned at other descending sub frames, also can be positioned at a plurality of OFDM symbols.The transmission cycle of middle pilot tone is not limited only to 1 frame in the present embodiment, also can be a plurality of frames or a plurality of subframe or a plurality of superframe.

Embodiment 12

In the present embodiment, after FFR enabled, the base station need be configured according to the average sub-carrier power of base station on FP1, FP2, FP3 and FP4 in the transmitting power of the subcarrier that middle pilot tone takies.

In the present embodiment, BS1, BS2, BS3 utilize the 1st the OFDM symbol of subframe SF3 (Subframe3) to adopt the mode of Reuse1 to send middle pilot tone, and the sub-carrier positions that middle pilot tone specifically takies is shown in black square subcarrier among Figure 19.The transmitting power of BS1 sub-carriers M1-1 and M1-2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{M1-1orM1-2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{M1-1orM1-2, BS1}The transmitting power of expression M1-1 and M1-2, Δ _{1, BS1}Expression P _M1-1orM1-2, the unsteady coefficient of BS1, i.e. reflection allows P _{M1-1orM1-2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers M1-3 and M1-4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{M1-3orM1-4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers M1-5 and M1-6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{M1-5orM1-6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers M1-7 and M1-8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{M1-7orM1-8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{M1-1orM1-2, BS1}=P ₀, P _{M1-3orM1-4, BS1}=P ₀, P _{M1-5orM1-6, BS1}=P ₀/ 2, P _{M1-7orM1-8, BS1}=P ₀/ 2.

The transmission position of middle pilot tone is not limited in the 1st the OFDM symbol of the subframe SF3 that chooses in the present embodiment, also can be positioned at other symbols, also can be positioned at other descending sub frames, also can be positioned at a plurality of OFDM symbols.The transmission cycle of middle pilot tone is not limited only to 1 frame in the present embodiment, also can be a plurality of frames or a plurality of subframe or a plurality of superframe.

Embodiment 13

Present embodiment is that example describes with many antennas, by middle pilot tone embodiment difference power.

In the present embodiment, system adopts structure and flow chart of data processing as shown in Figure 9.

In the present embodiment, BS1, BS2, BS3 utilize the 1st the OFDM symbol of subframe SF3 (Subframe3) to adopt the mode of Reuse3 to send middle pilot tone.Wherein, the mode of described Reuse3 is meant that BS1, BS2, BS3 send subcarrier quadrature on frequency that middle pilot tone takies.Wherein, the shared subcarrier quadrature on frequency of pilot tone in the middle of each base station sends on a plurality of transmitting antennas.Be example below with BS1, the sending method and the method for reseptance of pilot tone in the middle of describing in detail.

In the present embodiment, suppose that BS1 is at N _tIndividual (N _t=2) pilot tone in the middle of antenna (Antenna) is gone up and sent, the sub-carrier positions that pilot tone specifically takies is shown in black square subcarrier among Figure 20.The transmitting power of BS1 sub-carriers M1-1, M1-2, M2-1, M2-2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{M1-1, M1-2, M2-1, M2-2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{M1-1, M1-2, M2-1, M2-2, BS1}The transmitting power of expression M1-1, M1-2, M2-1, M2-2, Δ _{1, BS1}Expression P _{M1-1, M1-2, M2-1, M2-2, BS1}Unsteady coefficient, i.e. reflection allows P _{M1-1, M1-2, M2-1, M2-2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers M1-3, M1-4, M2-3, M2-4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{M1-3, M1-4, M2-3, M2-4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers M1-5, M1-6, M2-5, M2-6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{M1-5, M1-6, M2-5, M2-6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers M1-7, M1-8, M2-7, M2-8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{M1-7, M1-8, M2-7, M2-8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In the present embodiment, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{M1-1, M1-2, M2-1, M2-2, BS1}=P ₀, P _{M1-3, M1-4, M2-3, M2-4, BS1}=P ₀, P _{M1-5, M1-6, M2-5, M2-6, BS1}=P ₀/ 2, P _{M1-7, M1-8, M2-7, M2-8, BS1}=P ₀/ 2.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, after pilot tone in the middle of the 1st the OFDM symbol transmission of BS1 at subframe SF3 (Subframe3), pilot tone obtained the channel quality information of FP1, FP2, FP3, FP4 in the middle of terminal MS 1 was measured, and fed back the channel quality information of specific FP to BS1.Wherein, described specific FP can be selected and reporting base station BS1 by signaling terminal MS 1 or by terminal MS 1 by the base station, and described specific FP can comprise one or more FP or whole FP.

Embodiment 14

After FFR enabled, the base station need be configured according to the average sub-carrier power of base station on FP1, FP2, FP3 and FP4 in the transmitting power of the subcarrier that middle pilot tone takies in the present embodiment.

In the present embodiment, BS1, BS2, BS3 utilize the 1st the OFDM symbol of subframe SF3 (Subframe3) to adopt the mode of Reuse1 to send middle pilot tone.Wherein, the mode of described Reuse1 be meant BS1, BS2, BS3 send in the middle of the subcarrier that takies of pilot tone identical.Be example below with BS1, the sending method and the method for reseptance of pilot tone in the middle of describing in detail.

In the present embodiment, suppose that BS1 is at N _tIndividual (N _t=2) pilot tone in the middle of antenna (Antenna) is gone up and sent, the sub-carrier positions that pilot tone specifically takies is shown in black square subcarrier among Figure 21.The transmitting power of BS1 sub-carriers M1-1, M1-2, M2-1, M2-2 will be with reference to the average subcarrier transmitting power P of FP1 ₀, i.e. P _{M1-1, M1-2, M2-1, M2-2, BS1}=(1 ± Δ _{1, BS1}) P ₀, wherein, P _{M1-1, M1-2, M2-1, M2-2, BS1}The transmitting power of expression M1-1, M1-2, M2-1, M2-2, Δ _{1, BS1}Expression P _{M1-1, M1-2, M2-1, M2-2, BS1}Unsteady coefficient, i.e. reflection allows P _{M1-1, M1-2, M2-1, M2-2, BS1}With respect to P ₀Unsteady size.In like manner, the transmitting power of BS1 sub-carriers M1-3, M1-4, M2-3, M2-4 will be with reference to the average subcarrier transmitting power P of FP2 ₀, i.e. P _{M1-3, M1-4, M2-3, M2-4, BS1}=(1 ± Δ _{2, BS1}) P ₀The transmitting power of BS1 sub-carriers M1-5, M1-6, M2-5, M2-6 will be with reference to the average subcarrier transmitting power P of FP3 ₀/ 2, i.e. P _{M1-5, M1-6, M2-5, M2-6, BS1}=(1 ± Δ _{3, BS1}) P ₀/ 2; The transmitting power of BS1 sub-carriers M1-7, M1-8, M2-7, M2-8 will be with reference to the average subcarrier transmitting power P of FP4 ₀/ 2, i.e. P _{M1-7, M1-8, M2-7, M2-8, BS1}=(1 ± Δ _{4, BS1}) P ₀/ 2.In this enforcement bag example, Δ _{1, BS1}, Δ _{2, BS1}, Δ _{3, BS1}, Δ _{4, BS1}Suppose all to equal 0, then P _{M1-1, M1-2, M2-1, M2-2, BS1}=P ₀, P _{M1-3, M1-4, M2-3, M2-4, BS1}=P ₀, P _{M1-5, M1-6, M2-5, M2-6, BS1}=P ₀/ 2, P _{M1-7, M1-8, M2-7, M2-8, BS1}=P ₀/ 2.

Among the embodiment said method two is described below.In following embodiment, exist three base stations to be respectively BS1, BS2 and BS3 in the supposing the system.After FFR enabled, base station BS 1, BS2 and BS3 did not send any information on all or part of FP in specific OFDM symbol respectively, measure the channel quality information of all or part of FP for terminal.Wherein, not send the shared OFDM symbol of information on identical FP inequality for BS1, BS2 and BS3.Wherein, specific OFDM symbol can be the standard default configuration or the base station determine through consultation.

Embodiment 15

In the present embodiment said method two is described, in the present embodiment, each base station does not send the shared OFDM of information and meets inequalityly on identical frequency partition, and all measure for all frequency partition in the frequency partition set.

Be that example is described the method that terminal is measured the channel quality information of FP in detail below with BS1.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, and after FFR enabled, base station BS 1 needed the channel quality information of terminal to report FP1, FP2, FP3 and FP4.Do not send any information on the subcarrier of BS1 FP1 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 1st frame of L superframe, do not send any information on the subcarrier of BS1 FP2 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 2nd frame of L superframe, do not send any information on the subcarrier of BS1 FP3 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 3rd frame of L superframe, do not send any information on the subcarrier of BS1 FP4 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 4th frame of L superframe.

Terminal MS 1 is measured interference strength value from other base stations (BS2 and BS3) respectively constantly at described OFDM symbol on FP1, FP2, FP3 and FP4, and the interference strength value that obtains is reported serving BS BS1.

Can adopt above-mentioned similar processing for BS2 and BS3.

Embodiment 16

In the present embodiment said method two is described, in the present embodiment, each base station does not send the shared OFDM of information and meets inequalityly on identical frequency partition, and measure for the component frequency subregion in the frequency partition set.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, and after FFR enabled, base station BS 1 needed the channel quality information of terminal to report FP1 and FP2.Then do not send any information on the subcarrier of BS1 FP1 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 1st frame of L superframe, do not send any information on the subcarrier of BS1 FP2 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 2nd frame of L superframe.

Terminal MS 1 is measured interference strength value from other base stations (BS2 and BS3) respectively constantly at above-mentioned OFDM symbol on FP1, FP2, and the interference strength value that obtains is reported serving BS BS1.

Embodiment 17

In the present embodiment said method two is described, in the present embodiment, each base station does not send the shared OFDM of information and meets identically on identical frequency partition, and all measure for all frequency partition in the frequency partition set.

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, and after FFR enabled, base station BS 1 needed the channel quality information of terminal to report FP1, FP2, FP3 and FP4.BS1 does not send any information in the 3rd OFDM symbol of the 2nd descending sub frame of the 1st frame of L superframe.

Terminal MS 1 is measured interference strength value from other base stations (BS2 and BS3) respectively constantly at above-mentioned OFDM symbol on FP1, FP2, FP3 and FP4, and the interference strength value that obtains is reported serving BS BS1.

Embodiment 18

In the present embodiment, the serving BS of supposing terminal MS 1 is BS1, and after FFR enabled, base station BS 1 needed the channel quality information of terminal to report FP1 and FP2.Then do not send any information on the subcarrier of BS1 FP1, FP2 correspondence in the 3rd OFDM symbol of the 2nd descending sub frame of the 1st frame of L superframe.

Terminal MS 1 is measured interference strength value from other base stations (BS2 and BS3) respectively constantly at described OFDM symbol on FP1, FP2, and the interference strength value that obtains is reported serving BS BS1.

Following embodiment describes said method three.

Embodiment 19

In the present embodiment, adopt the transmitting power configuration information of whole FP in the set of signaling transmission frequency subregion.

Be transmission and the method for reseptance that example is described this signaling in detail below with BS1.

In the present embodiment, suppose that the transmitting power of the subcarrier of BS1 on FP1 is P1, the transmitting power of the subcarrier of BS1 on FP2 is P2, and the transmitting power of the subcarrier of BS1 on FP3 is P3, and the transmitting power of the subcarrier of BS1 on FP4 is P4.Then BS1 sends to terminal MS 1 with the absolute value information of P1, P2, P3, P4 by signaling S1.

MS1 receives the signaling S1 that base station BS 1 sends, and obtains subcarrier transmitting power P1, P2, P3 and the P4 of FP1, FP2, FP3 and FP4 by decoding S1.

Wherein, need to prove, the mode that BS1 sends P1, P2, P3, P4 is not limited in the absolute value mode described in the present embodiment, also can adopt the mode of difference to send, promptly from subcarrier transmitting power P1, P2, P3 and the P4 of FP1, FP2, FP3 and FP4, select the subcarrier transmitting power Px of a FP, adopt the absolute value mode to send Px, the subcarrier transmitting power of other FP adopts and the difference mode of Px sends.For example, BS1 selection frequency re-use factor is the subcarrier transmitting power P2 of FP2 during the FP of Reuse1/3 gathers, adopts the absolute value mode to send, and P1, P3 and P4 adopt the difference mode to send.Receiving terminal, MS1 at first recovers P2 by decoding, and then recovers P1, P3 and P4.

Embodiment 20

In the present embodiment, adopt the transmitting power configuration information of part FP in the set of signaling transmission frequency subregion.

In the present embodiment, suppose that the transmitting power of the subcarrier of BS1 on FP1 is P1, the transmitting power of the subcarrier of BS1 on FP2 is P2, and the transmitting power of the subcarrier of BS1 on FP3 is P3, and the transmitting power of the subcarrier of BS1 on FP4 is P4.The transmitting power P1 of the subcarrier on the FP1 is stored in base station and the terminal as the standard default configuration and (is not limited in the transmitting power P1 of the subcarrier of FP1 here, also can be the transmitting power of the subcarrier of other one or more FP), then BS1 sends to terminal MS 1 with the absolute value information of P2, P3, P4 by signaling S1.

MS1 receives the signaling S1 that base station BS 1 sends, and obtains subcarrier transmitting power P2, P3 and the P4 of FP2, FP3 and FP4 by decoding S1.

Wherein, need to prove, the mode that BS1 sends P2, P3, P4 is not limited in the absolute value mode described in the present embodiment, also can adopt the mode of difference to send, promptly from subcarrier transmitting power P2, the P3 of FP2, FP3 and FP4 and P4, select the subcarrier transmitting power Px of a FP, adopt the absolute value mode to send Px, the subcarrier transmitting power of other FP adopts and the difference mode of Px sends.For example, BS1 selection frequency re-use factor is the subcarrier transmitting power P2 of FP2 during the FP of Reuse1/3 gathers, adopts the absolute value mode to send, and P3 and P4 adopt the difference mode to send.Receiving terminal, MS1 at first recovers P2 by decoding, and then recovers P3 and P4.

Wherein, need to prove, the mode that BS1 sends P2, P3, P4 is not limited in the absolute value mode described in the present embodiment, can also adopt the mode of another kind of difference to send, i.e. subcarrier transmitting power P2, the P3 of FP2, FP3, FP4, P4 employing sends with the difference mode of P1.Receiving terminal, MS1 is known the subcarrier transmitting power P1 of FP1 according to the standard default configuration, and then recovers P2, P3 and P4 by decoding.

Embodiment 21

In the present embodiment, utilize the identifying information (SegmentID) of sector and the corresponding relation of transmitting power configuration information, the transmitting power configuration information of whole FP in the set of terminal frequency of notification subregion.

Be the preparation method that example is described the subcarrier transmitting power of each FP in detail below with BS1.

In the present embodiment, suppose that MS1 is is the terminal of serving BS with BS1, MS1 is by main lead code (the Primary Advanced Preamble of the evolution of decoding BS1 transmission, abbreviate PA-Preamble as), know the band width configuration information of BS1, the employed bandwidth of hypothesis BS1 is 10MHz in the present embodiment.The SA-Preamble (SecondAdvanced Preamble) that MS1 decoding BS1 sends), know that the SA-Preamble sequence that BS1 sends is SAP-1.MS1 finds the SegmentID of sequence SAP-1 correspondence in the corresponding relation of operable SA-Preamble arrangement set of the 10MHz of standard default configuration bandwidth and SegmentID, be assumed to be Segment 1, and promptly the SegmentID of BS1 is Segment 1.Last terminal MS 1 finds the transmitting power configuration of the FP of BS1 according to the corresponding relation of the transmitting power of SegmentID and FP by Segment 1.

Embodiment 22

In the present embodiment, utilize the corresponding relation of SA-Pr call number and transmitting power configuration information, the transmitting power configuration information of whole FP in the set of terminal frequency of notification subregion.

In the present embodiment, suppose that MS1 is is the terminal of serving BS with BS1, MS1 is known the band width configuration information of BS1 by the PA-Preamble (Primary Advanced Preamble) that decoding BS1 sends, and the employed bandwidth of hypothesis BS1 is 10MHz in the present embodiment.The SA-Preamble (Second Advanced Preamble) that MS1 decoding BS1 sends knows that the SA-Preamble sequence that BS1 sends is SAP-1.MS1 finds the call number of sequence SAP-1 in the operable SA-Preamble arrangement set of the 10MHz of standard default configuration bandwidth, be assumed to be Index-1.Last terminal MS 1 finds the transmitting power configuration of the FP of BS1 according to the corresponding relation of the transmitting power of operable SA-Preamble arrangement set of 10MHz bandwidth and FP by call number Index-1.

Embodiment 23

In the present embodiment, utilize the corresponding relation of IDCell sequence number and transmitting power configuration information, the transmitting power configuration information of whole FP in the set of terminal frequency of notification subregion.

In the present embodiment, suppose that MS1 is is the terminal of serving BS with BS1, MS1 is known the band width configuration information of BS1 by the PA-Preamble (Primary Advanced Preamble) that decoding BS1 sends, and hypothesis BS 1 employed bandwidth is 10MHz in the present embodiment.The SA-Preamble (Second Advanced Preamble) that MS1 decoding BS1 sends knows that the SA-Preamble sequence that BS1 sends is SAP-1.MS1 finds the call number of sequence SAP-1 in the operable SA-Preamble arrangement set of the 10MHz of standard default configuration bandwidth, be assumed to be Index-1.MS1 finds the SegmentID of sequence SAP-1 correspondence in the corresponding relation of operable SA-Preamble arrangement set of the 10MHz of standard default configuration bandwidth and SegmentID, be assumed to be Segment 1, and promptly the SegmentID of BS1 is Segment 1.MS1 according to Segment 1 and Index-1 by calculating the IDCell of BS1.MS1 is according to the IDCell of base station and the corresponding relation of FP power configuration, and the IDCell that finds BS1 is to deserved FP power configuration information, and then obtains the power configuration information of the FP of BS1.

Last terminal MS 1 finds the transmitting power configuration of the FP of BS1 according to the corresponding relation of the transmitting power of operable SA-Preamble arrangement set of 10MHz bandwidth and FP by call number Index-1.

Embodiment 24

In the present embodiment, adopt the index information of the transmitting power configuration of whole FP in the set of signaling transmission frequency subregion, and indicate the position of transmitting power configuration information in the transmitting power configuration index table of frequency partition of one or more frequency partition by index information.Wherein, described concordance list is stored in described base station and the described terminal as standard configuration.

In the present embodiment, the transmitting power of supposing the subcarrier of BS1 on FP1, FP2, FP3 and FP4 is respectively P1, P2, P3 and P4.The transmitting power configuration index table of the frequency partition of BS1 by searching standard configuration finds the index information of correspondence when 4 FP transmitting powers are respectively P1, P2, P3 and P4 under the prerequisite of 4 FP.Then BS1 sends to terminal MS 1 with this index information by signaling S1.

MS1 receives the signaling S1 that base station BS 1 sends, and S1 obtains above-mentioned index information by decoding, and finds transmitting power P1, P2, P3 and the P4 of the frequency partition of above-mentioned index information correspondence by the transmitting power configuration index table of searching frequency partition.

As mentioned above, the technical scheme that provides by the embodiment of the invention, the base station sends reference signal by down channel according to the transmitting power of each FP on each FP, so that terminal is measured the channel quality information of each frequency partition by reference signal, thereby can improve the accuracy of the channel quality information of measuring on the terminal.And, in embodiments of the present invention, the serving BS of terminal can not send any information on predetermined running time-frequency resource, so that terminal receives only on this running time-frequency resource from other signal of base station except that this serving BS, thereby can measure interference strength on this running time-frequency resource accurately.In addition, in embodiments of the present invention, by other indication information of transmit power levels of base station each frequency partition of notice terminal, make terminal can know the transmitting power configuration of each frequency partition, thereby can improve the accuracy that terminal is measured the channel quality of each frequency partition.

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

Claims

1. signal channel quality measuring method is used for measuring the channel quality information of wireless communication system, it is characterized in that described method comprises:

The base station sends reference signal by down channel on frequency partition, so that terminal is measured the channel quality information of described frequency partition by described reference signal.

2. method according to claim 1 is characterized in that, described frequency partition comprises: the one or more frequency partition in the frequency partition set.

3. method according to claim 2 is characterized in that, determines one of in such a way described frequency partition:

Determine by described base station;

Determine and notify described base station by the upper strata network element;

Determine according to pre-configured.

4. method according to claim 2 is characterized in that, described base station sends described reference signal by down channel and comprises on described frequency partition:

Described base station sends described reference signal by down channel on the predetermined subcarrier of described frequency partition.

5. method according to claim 4 is characterized in that, described predetermined subcarrier is determined one of in the following manner:

Determine by described base station;

Determine according to pre-configured.

6. according to claim 3 or 5 described methods, it is characterized in that it is one of following that described upper strata network element comprises: base station, trunking, base station controller, access service network, connection service network, core net, core net gateway.

7. method according to claim 4 is characterized in that, described base station sends described reference signal and comprises on the described predetermined subcarrier of described frequency partition:

The transmitting power of described predetermined subcarrier is determined according to the transmitting power of described frequency partition in described base station;

Described base station adopts the described transmitting power of determining to send described reference signal on described predetermined subcarrier.

8. method according to claim 7 is characterized in that, described base station determines that according to the transmitting power of described frequency partition the transmitting power of described predetermined subcarrier comprises:

The transmitting power of described frequency partition is high more, and the transmitting power of the described predetermined subcarrier of determining is high more.

9. method according to claim 8 is characterized in that,

The average transmit power of the transmitting power of described predetermined subcarrier and the subcarrier of described frequency partition is identical or differ predetermined value.

10. according to each described method in the claim 1 to 6,8 and 9, it is characterized in that the content and structure of the described reference signal that described base station sends by down channel is pre-determined by described base station and described terminal or according to preset configuration on frequency partition.

11. method according to claim 10 is characterized in that, after described base station sent described reference signal, described method also comprised:

Described terminal is by measuring the channel quality information that described reference signal obtains described frequency partition.

12. method according to claim 11 is characterized in that, described channel quality information comprise following one of at least:

Received signal intensity indication information;

Interference measure;

Signal and interference and noise ratio;

Signal and interference ratio;

Signal and noise ratio;

Spectrum efficiency;

The measured value relevant with channel quality.

13. an interference strength method of measurement is characterized in that, comprising:

The base station does not send any information on predetermined running time-frequency resource, wherein, described predetermined running time-frequency resource comprises one or more symbols in time-domain, and frequency domain comprises the subcarrier on one or more frequency partition;

By measuring the signal on the described predetermined running time-frequency resource, terminal obtains the interference strength on described one or more frequency partition.

14. method according to claim 13 is characterized in that, described terminal comprises with described base station being a terminal or one group of terminal of serving BS.

15. method according to claim 13 is characterized in that, described predetermined running time-frequency resource is determined one of in the following manner:

Determine by described base station;

Determine according to pre-configured.

16. method according to claim 15 is characterized in that, it is one of following that described upper strata network element comprises: base station, trunking, base station controller, access service network, connection service network, core net, core net gateway.

17. method according to claim 15 is characterized in that, determines that described predetermined running time-frequency resource comprises:

The described predetermined running time-frequency resource of different base station on identical described frequency partition is inequality.

18. a transmitting power acquisition methods is used for the transmitting power configuration information that terminal is obtained frequency partition, it is characterized in that described method comprises:

The base station is notified to terminal by down channel with the transmitting power configuration information of frequency partition.

19. method according to claim 18 is characterized in that, described frequency partition comprises the one or more frequency partition in the frequency partition set.

20. method according to claim 19 is characterized in that, described base station notifies described terminal to comprise described transmitting power configuration information:

Described base station is carried at described configuration information and sends to described terminal in the signaling.

21. method according to claim 19 is characterized in that, described base station notifies described terminal to comprise described transmitting power configuration information:

Described base station sends the index information of the transmitting power of described frequency partition to described terminal, wherein, described index information is indicated the position of transmitting power configuration information in the transmitting power configuration index table of frequency partition of described frequency partition, and described transmitting power configuration index table is stored in described base station and the described terminal.

22. method according to claim 19 is characterized in that, described base station notifies described terminal to comprise described indication information:

Described base station sends default signaling to described terminal;

Described terminal is obtained the transmitting power configuration information of the described frequency partition corresponding with the described default signaling that receives according to the corresponding relation of the transmitting power configuration information of default signaling of storing in advance and described frequency partition.

23. method according to claim 22 is characterized in that, it is one of following that described default signaling comprises: the auxilliary leading identification information of the identifying information of base station, the identifying information of sector, evolution.

24. method according to claim 18 is characterized in that, after described terminal was notified with described transmitting power configuration information in described base station, described method also comprised:

Described terminal is obtained the transmitting power configuration information of described frequency partition according to described notice.

25. a channel quality measurement system is characterized in that, comprising:

The base station is used for sending reference signal by down channel on frequency partition;

Terminal is used to receive described reference signal, and measures the channel quality information of described frequency partition according to described reference signal.

26. an interference strength measuring system is characterized in that, comprising:

The base station, be used on predetermined running time-frequency resource, not sending any content, so that the terminal of described base station as serving BS received only on described predetermined running time-frequency resource from other signal of base station except that described base station, wherein, described predetermined running time-frequency resource comprises one or more symbols in time-domain, and frequency domain comprises the subcarrier on one or more frequency partition;

Described terminal is used to measure the signal on the described predetermined running time-frequency resource, obtains the interference strength on described one or more frequency partition.

27. a transmitting power is obtained system, it is characterized in that, comprising:

The base station is used for by down channel the transmitting power configuration information of frequency partition being notified to terminal;

Described terminal is used to receive the notice that the base station sends, and obtains the transmitting power configuration information of described frequency partition according to described notice.